File swww-0.9.1.obscpio of Package swww

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File swww-0.9.1.obscpio of Package swww

07070100000000000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001300000000swww-0.9.1/.config07070100000001000081A400000000000000000000000165FE2753000009A6000000000000000000000000000000000000002000000000swww-0.9.1/.config/nextest.toml# This is the default config used by nextest. It is embedded in the binary at
# build time. It may be used as a template for .config/nextest.toml.

[store]
# The directory under the workspace root at which nextest-related files are
# written. Profile-specific storage is currently written to dir/<profile-name>.
dir = "target/nextest"

# This section defines the default nextest profile. Custom profiles are layered
# on top of the default profile.
[profile.default]
# "retries" defines the number of times a test should be retried. If set to a
# non-zero value, tests that succeed on a subsequent attempt will be marked as
# non-flaky. Can be overridden through the `--retries` option.
retries = 0

# Show these test statuses in the output.
#
# The possible values this can take are:
# * none: no output
# * fail: show failed (including exec-failed) tests
# * retry: show flaky and retried tests
# * slow: show slow tests
# * pass: show passed tests
# * skip: show skipped tests (most useful for CI)
# * all: all of the above
#
# Each value includes all the values above it; for example, "slow" includes
# failed and retried tests.
#
# Can be overridden through the `--status-level` flag.
status-level = "pass"

# "failure-output" defines when test failures are output to standard output.
# Accepted values are
# * "immediate": output failures as soon as they happen
# * "final": output failures at the end of the test run
# * "immediate-final": output failures as soon as they happen and at the end of
#   the test run
# * "never": don't output failures at all
#
# For large test suites and CI it is generally useful to use "immediate-final".
#
# Can be overridden through the `--failure-output` option.
failure-output = "immediate"

# "success-output" controls output on success. This should generally be set to
# "never".
success-output = "never"

# Cancel the test run on the first failure. For CI runs, consider setting this
# to false.
#fail-fast = true
fail-fast = false

# Treat a test that takes longer than this as slow, and print a message.
slow-timeout = "60s"

[profile.default.junit]
# Output a JUnit report into the given file inside 'store.dir/<profile-name>'.
# If unspecified, JUnit is not written out.

# path = "junit.xml"
path = "report.xml"

# The name of the top-level "report" element in JUnit report. If aggregating
# reports across different test runs, it may be useful to provide separate names
# for each report.
report-name = "nextest-run"
07070100000002000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001D00000000swww-0.9.1/.github/workflows07070100000003000081A400000000000000000000000165FE2753000002DD000000000000000000000000000000000000002700000000swww-0.9.1/.github/workflows/check.ymlname: Check

on:
  workflow_call:

env:
  CARGO_TERM_COLOR: always
  SCCACHE_GHA_ENABLED: "true"
  RUSTC_WRAPPER: "sccache"

jobs:
  clippy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy
      - run: cargo clippy --version
      - run: cargo clippy --workspace --locked --tests

fmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt
      - run: cargo fmt --version
      - run: cargo fmt --all --check
07070100000004000081A400000000000000000000000165FE2753000000F6000000000000000000000000000000000000002400000000swww-0.9.1/.github/workflows/ci.ymlname: CI

on:
  pull_request:
  merge_group:
  push:
    branches:
      - main

jobs:
  check:
    uses: ./.github/workflows/check.yml
  dependencies:
    uses: ./.github/workflows/dependencies.yml
  test:
    uses: ./.github/workflows/test.yml
07070100000005000081A400000000000000000000000165FE2753000004B3000000000000000000000000000000000000002E00000000swww-0.9.1/.github/workflows/dependencies.ymlname: Dependencies

on:
  workflow_call:

env:
  CARGO_TERM_COLOR: always
  SCCACHE_GHA_ENABLED: "true"
  RUSTC_WRAPPER: "sccache"

jobs:
  advisories:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-deny
      - run: cargo deny check advisories

bans:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-deny
      - run: cargo deny check bans

licences:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-deny
      - run: cargo deny check licenses

sources:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-deny
      - run: cargo deny check sources
07070100000006000081A400000000000000000000000165FE27530000073C000000000000000000000000000000000000002600000000swww-0.9.1/.github/workflows/test.ymlname: Test

on:
  workflow_call:

env:
  CARGO_TERM_COLOR: always
  SCCACHE_GHA_ENABLED: "true"
  RUSTC_WRAPPER: "sccache"

jobs:
  nightly:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: llvm-tools-preview
      - uses: taiki-e/install-action@cargo-nextest
      - uses: taiki-e/install-action@cargo-llvm-cov
      - name: Run tests
        run: cargo llvm-cov --workspace --locked nextest --html
      - name: Upload test report
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: report
          path: target/nextest/default/report.xml
          retention-days: 30
      - name: Upload coverage results
        uses: actions/upload-artifact@v3
        if: always()
        with:
          name: coverage
          path: target/llvm-cov/
          retention-days: 30

stable:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-nextest
      - run: cargo build --workspace --locked --verbose
      - run: cargo nextest run --workspace --locked

msrv:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: SebRollen/toml-action@v1.0.2
        id: msrv
        with:
          file: 'Cargo.toml'
          field: 'package.rust-version'
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ steps.msrv.outputs.value }}
      - uses: taiki-e/install-action@cargo-nextest
      - run: cargo build --workspace --locked --verbose
      - run: cargo nextest run --workspace --locked
07070100000007000081A400000000000000000000000165FE275300000025000000000000000000000000000000000000001600000000swww-0.9.1/.gitignoretarget/*
completions/*
test_images/*
07070100000008000081A400000000000000000000000165FE27530000398E000000000000000000000000000000000000001800000000swww-0.9.1/CHANGELOG.md### Unreleased

### 0.9.1

My bad everyone, `0.9.0` wasn't loading the cache, so I am publishing this quick
fix.

### 0.9.0

#### BREAKING CHANGES

MSRV is now 1.74.0.

#### Deprecated

`swww init` is now considered deprecated. Use `swww-daemon` instead. To run it
in the background, simply do `swww-daemon &`.

#### Fixes

* fix the `let_underscore_lock` error. Note that all 0.8.* will probably no
  longer build with newer Rust versions due to that error. By @akida32
  * fixed webp and gifs that are only a static image
  * fixed busy waiting for WlBuffers to be released. This was a big one, and it
  involved rewriting a ton of stuff. We've implemented our own memory pool and
  are using frame callbacks to know when to draw now. A big thanks to @YaLTeR,
  @jeLee6gi for their patience and help with debugging and testing this thing.
  * properly removing all cache contents on `clean-cache`
  * always center images that are larger than the monitor
  * animations no longer overlap when sending two animated images in succession
  * fix randomize script trying to use directories as images. Fix was suggested
  by @MRSS02
  * waiting for child swww process when loading the cache, preventing zombie
  processes
  * waiting for daemon initialization before certain requests. By @musjj

#### Improvements

* New, better compression function implementations. We are now using some
  SIMD code to accelerate the frame compression functions, leading to some nice
  speedups in some cases. Thanks to @Akida31 for their help in verying my unsafe
  code.
  * We are using 3 channel color formats for some nice perf and memory
  improvements. Unfortunately, it seems to not work for some people on some
  notebooks (see [Known Issues](#known-issues)).
  * Implemented a way to force the use of a specific wayland_shm format, as a
  workaround for [Known Issues](#known-issues). Also went ahead and implemented
  some cli options for the daemon.
  * Support for animated pngs
  * Support for animations when piping images from standard input
  * Fps is now a `u16`, so we can support newest monitors framerates
  * Created a `restore` command to manually restore the cache. By @musjj
  * GitHub actions! Big thanks to @MichaelOultram!

#### Known Issues

Some people are having some problems with the 3 channel color formats (see issue
#233). Currently, initializing the daemon with `swww-daemon --format xrgb` is a
workaround to that.

### 0.8.2

NOTE ALL 0.8.* VERSIONS WILL PROBABLY NO LONGER BUILD WITH NEWER RUST VERSIONS.
This is because Rust promoted `let_underscore_lock` to a hard error, which
wasn't the case at the time we've published these versions.

#### **ATTENTION PACKAGE MAINTAINERS**

I've changed my username from `Horus645` to `LGFae`. This means you will have to
update the remote url to `https://github.com/LGFae/swww`. Anyone who also has
direct links to the old address should update them.

I've done this because mostly to make it more professional looking. I've
considered using two github accounts instead, but that would involve setting up
multiple ssh keys on my machine and  included other complications. I deeply
apologize for the inconvenience.

#### Changes:

* update MSRV in README.md, by @micielski
  * implemented a `--no-cache` flag for `swww init`
  * fixes to the build script, by @m4rch3n1ng
  * client waits for daemon to be ready on `swww init`
  * more accurate image fit implementation
  * added MSRV to Cargo.toml, by @akida31
  * fix some documentation typos and inacuracies
  * fix timings for transition frames
  * fix capacity of Vec in `image_pad` function, by @MichaelOultram
  * implement animated WebP Support, by @MichaelOultram
  * some other memory optimizations, by @MichaelOultram
  * implement `clear-cache` command
  * we also automatically clear the cache from old `swww` versions now!

Also, we have udpdated all crates versions so that they all match. This should
help some package maintainers that were having difficulty setting `swww` up for
e.g. Debian, I believe.

### 0.8.1

Pretty a much a near-exclusive bug fix release:

* Fixed `swww clear` causing the daemon to exit
  * The cache is once again being correctly load during `swww init`
  * Fixed glitches happening to animated gifs (frames were being loaded in the 
  wrong order)
  * Fixed `swww-daemon` sometimes not drawing to the whole screen (forgot to set
  the exclusive zone to -2)
  * Fixed an issue where the daemon would hang if multiple images were sent in
  quick succession

#### Additions:

* `--transition-type none`, which is an alias to `--trasition-type simple`
  `--transition-step 255`

### 0.8.0

#### BREAKING CHANGE: CACHE HAS CHANGED:

I have changed the way we are caching the images / animations. **I would
recommend users to delete the previous cache directory once they install this
new version**:

```bash
rm -r $XDG_CACHE_HOME/swww # OR
rm -r $HOME/.cache/swww
```

#### BREAKING CHANGE: NUKED `--sync` flag:

We now sync everything automatically, every time. So we've eliminated that flag.

#### Update to [`sctk 0.17`](https://github.com/Smithay/client-toolkit):

Updating to [`sctk 0.17`](https://github.com/Smithay/client-toolkit) unlocked
many, many improvements:
  * We managed to ditch and extra `clone` when calculating the transitions
  * We now draw the images directly into the wayland buffer, instead of having
  to send an intermidiary buffer through a channel.
  * Because of the above, we can now send from the client a `bgr` image, instead
  of a `bgra` one. This lets us seriaze and write roughly 3/4 of what we were
  doing previously.

#### Moving from `serde` to `rkyv`:

We have changed our serialization strategy from
[`serde`](https://github.com/serde-rs/serde) to
[`rkyv`](https://github.com/rkyv/rkyv). This lead to even further memory usage
reductions, since `rkyv` does not use an intermidate buffer to deserialize its
structures.

#### Additions:

We have reworked the way we do synchronization between monitors. It should sync
all monitors animations automatically.

* New transition, `fade`, that is essentially `simple` with beziers (@flick0)
  * `invert_y` flag (@flick0)
  * New option to resize to fit, padding only what was left (@SignalWalker)
  * @RiedleroD fixed a type :)

#### Summary:

With all of the changes above, **I've managed to reduce memory consumption
almost by a factor of 3**. The price to pay was a full rewrite of the wayland
implementation part of the daemon, a partial rewrite of the way we do ipc,
and all the code adaptions necessary to make all that work.

Unfortunately, because I had to rewrite so much stuff, it is possible that old
bugs will resurface. I've tried my best to test and validate it with every thing
that blew up in the past, but it is probably inevitable that some stuff slipped
by. Apologies in advance, and keep this in mind when upgrading.

### 0.7.3

Fixes:
  * Missing `/` when using `$HOME/.cache/swww`, by @max-ishere
  * `--transition-step` with `simple` has saner defaults
  * correctly splitting outputs argument with ',', by @potatoattack

Improvements:
  * we only send the image after we've finished processing the whole animation.
  This diminishes the weird lag that can sometimes happen when sending a large
  gif.
  * sending a status update to systemd when daemon has initialized, by @b3nj4m1n

Internals:
  * we have benchmarks for our compression functions! This will be useful for
  later once I start poking things to see if I can make them more efficient.

Unfortunately, there are a few bugs people have reported that I still haven't
been able to fix. Sorry about that.

In any case, the immediate plan for the future is actually to update sctk to
version 0.17.0. I am actually studying the possibility of using sctk with wgpu,
since that should bring many improvements (most noticeably, we would be able to
store an rgb vector, instead of rgba, so we could potentially cut memory usage
by 3/4. In theory, of course, I still have to actually measure it to see if
there's any difference. It will probably still take a while).

### 0.7.2

Improvements:
  * Images (and animations) are now cached at `$XDG_CACHE_HOME` #65
  * We now have man-pages! They must be installed manually in your system by
    moving the files in `doc/generated` to the appropriate location. Typically,
	you can figure out where that is by running `manpath`. The script
	`doc/gen.sh` will create the above directory and all the relevant manpages.
	Note that the script depends on `scdoc` being installed in the system.
	Have a look at it for more details.
  * We now also have automated spell checking. This let us fix a number in typos
    in our documentation, both internal and user-oriented.
  * New option for `swww-img`: `--sync`. This syncs the animations in all your
  monitors. Note that *all monitors must be displaying animations* in order for
  it to work.

Internal:
  * Integration tests are not run by default. You must now use
  `cargo test -- --ignored` to run them. This will make it possible for some
  people (like the ones trying to package `swww` at Nix) to run some of the
  tests in a sandboxed environment where they don't have access to the wayland
  server. If anyone is interested in running *all* tests, they can do that with
  `cargo test -- --include-ignored`.

### 0.7.1

Improvements:
  * you can now use absolute screen coordinates with `--transition-pos`
  (@flick0)

Fixes:
  * `swww query` not returning the image being displayed
  * document `--no_resize` and `--fill_color` options for `swww img`
  * reading img from stdin (now with a proper integration test to make sure
  it doesn't happen again) (#42)

Internal:
  * fixed `tests/integration_tests.rs` calling the wrong `swww-daemon` binary

### 0.7.0

**BREAKING CHANGES**

* **ATTENTION, PACKAGE MAINTAINERS** - `swww` is now composed of two separate
  binaries: `swww` and `swww-daemon`. **Both** must be installed on the user's
  system in order for `swww` to work correctly. Doing this allowed for major
  improvements in terms of overall memory usage, among other things (#52).

Improvements:
 
 * separate client and daemon (see above).
 * we don't try to animate `gif` files that have only one frame
 * we can read images from stdin (not this does not work for animated gifs; we
 simply display the image's first frame) (#42)
 * `--no-resize` option (pads the outer part of the image with `fill-color`)
 (#37)
 * new transition: `wave`, by @flick0
 * reading image format properly (instead of using file extension) (#74)

Fixes:
  * fixed panic with on gif that had identical frames (#68)
  * fixed panic with fractional-scaling (#73) (by @thedmm)

Non-breaking Changes:
 * @flick0 changed the default `transition-step`

Internal:
 * Many improvements to the README.md (@aouerfelli and @flick0)

### 0.6.0

**BREAKING CHANGES**

* `transition-speed` no longer exists. Now, speed is controlled through a
  bezier curve (`transition-bezier`), and duration (`transition-duration`)
  flags (note this also applies to the env var, SWWW_TRANSITION_SPEED). A
  warning was added when we detect the presence of the SWWW_TRANSITION_SPEED
  environment variable. This warning will go away in the next release, it is
  only there as a means of making sure everyone knows the variable has been
  superseded, and having it in your configs no longer does anything.

Improvements:

* New grow transition. Grow and outer transition now accept a --transition-pos
  command line argument. By @flick0.
  * Transitions `grow` and `outer` now both work with bezier curves (see
  breaking changes, above). This allows for finer control in animation speed
  than before. Also by @flick0.
  * Very slightly faster decompression routine

### 0.5.0

**BREAKING CHANGES**:

* `swww query` now formats its output as `<output>: ...`, instead of
  `<output> = ...`. This will break your scripts if you relied on the output's
  format.

Improvements:

* Fixed `swww` getting stuck on a futex when a new monitor was connected (#26)
  * New `wipe` transition by @flick0
  * Several small code improvements by @WhyNotHugo
  * Typo fix (@thebenperson)

### 0.4.3

* Check to see if daemon is REALLY running when we see that socket already
  exists (#11)
  * Fix dpi scaling (#22)

### 0.4.2

* Fixed #13.
  * Improved error message when daemon isn't running (#18)

### 0.4.1

* Fixed regression where the image was stretched on resize (#16)

### 0.4.0

* implemented the new transition effects

* refactored socket code

* refactored event loop initialization code, handling errors properly now

* BREAKING CHANGE: we are using fast_image_resize to resize our images now.
  This makes resizing much faster (enough to smoothly play animations before
  caching is done), but it makes it so that the `Gaussian` and `Triangle`
  filters no longer exist. Furthermore, the filters `Bilinear` and `Mitchell`
  were added.

* deleted previously deprecated `init -i` and `init -c` options

### 0.3.0

* Limited image formats to: `gif`, `jpeg`, `jpeg_rayon`, `png`, `pnm`, `tga`,
  `tiff`, `webp`, `bmp`, `farbfeld`
* Bumped rust edition to 2021
* Our custom compression is now even faster
* I did a rewrite of the way the code that handled animations was structured.
  This made caching a LOT faster, but it incurs in more memory usage, since
  we spawn an extra thread to make a pipeline. That said, since this also 
  greatly simplified the code itself, I considered it an overall positive
  change.
* Fixed a bug where the animation wouldn't stop until it had processed all the
  frames, even when it was told to.
* Setting a custom names and stack sizes to our threads. The custom name will
  help in debugging in the future, and the custom stack sizes lets us push the
  memory usage even lower.
* Did all the preparatory work for us to start writing new transition effects.
  Ideally they should come in the next version, which should hopefully also be
  our first release (since then I will consider swww to be pretty much feature
  complete).

### 0.2.0

Using unsafe to speed up decompression.
Also, `swww init -i` and `swww init -c` may now be considered deprecated.
It was originally created to bypass `swww init && swww img <path/to/img>` not
working. Now, however, it seems to be working properly. In hindsight, it was
probably already working for a while, but I failed to test it properly and
thought it was still a problem.

The `swww init -i` and `swww init -c` options shall remain for now, for 
compatibility and just in case a regression happens. Once I am confident
enough, they will be eliminated (that will let me erase around 50 lines of
code, I think).

### 0.1.0

Initial release.
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0707010000000B000081A400000000000000000000000165FE27530000894D000000000000000000000000000000000000001300000000swww-0.9.1/LICENSE                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007

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0707010000000C000081A400000000000000000000000165FE275300001EE4000000000000000000000000000000000000001500000000swww-0.9.1/README.md# A Solution to your Wayland Wallpaper Woes
### Efficient animated wallpaper daemon for wayland, controlled at runtime

![animated gif demonstration](https://i.imgur.com/Leuh6wm.gif)
![image transition demonstration](../demos/assets/grow.gif)

## Dependencies

- a compositor that implements:
   * wlr-layer-shell (typically wlroots based compositors)
   * xdg-output
 - [lz4](https://github.com/lz4/lz4) (for compressing frames when animating)

## Build

### Dependencies:

- Up to date stable rustc compiler and cargo (specifically, MSRV is 1.74.0)

To build, clone this repository and run:
```
cargo build --release
```
Then, put **both binaries** `target/release/swww` and
`target/release/swww-daemon` in your  path. Optionally, autocompletion scripts
for bash, zsh, fish and elvish are offered in the `completions` directory.

#### Man pages:

In order to generate the man pages, **you must have `scdoc` installed**. Run

```
./doc/gen.sh
```

The man pages will be in `doc/generated`. To install them, you must move them to
to the appropriate location in your system. You should be able to figure out
where that is by running `manpath`.

## Features

- Display animated gifs on your desktop
 - Display any image in the formats:
   * jpeg
   * png
   * gif
   * pnm
   * tga
   * tiff
   * webp
   * bmp
   * farbfeld
 - Clear the screen with an arbitrary rrggbb color
 - Smooth transition effect when you switch images
 - Do all of that without having to shutdown and reinitialize the daemon

## Why

There are two main reasons that compelled me to make this: the first is that
[`oguri`](https://github.com/vilhalmer/oguri) is unmaintained and archived,
despite there being serious problems with excess of memory use while displaying
certain gifs (see [this](https://github.com/vilhalmer/oguri/issues/38), for
example). The best alternative I've found for `oguri` was
[`mpvpaper`](https://github.com/GhostNaN/mpvpaper), but if felt overkill for my
purposes.

Comparing to `oguri`, `swww` uses less cpu power to animate once it has cached
all the frames in the animation. It should also be **significantly** more
memory efficient.

The second is that, to my knowledge, there is no wallpaper daemon for wayland
that allows you to change the wallpaper at runtime. That is, in order to, for
example, cycle through the images of a directory, you'd have to kill the daemon
and restart it. Not only does it make simple shell scripts a pain to write, it
makes switching from one image to the next to happen very abruptly.

## Usage

Start by initializing the daemon:
```
swww-daemon
```
Then, in a different terminal, simply pass the image you want to display:
```
swww img <path/to/img>

# You can also specify outputs:
swww img -o <outputs> <path/to/img>

# Control how smoothly the transition will happen and/or it's frame rate
# For the step, smaller values = more smooth. Default = 20
# For the frame rate, default is 30.
swww img <path/to/img> --transition-step <1 to 255> --transition-fps <1 to 255>

# There are also many different transition effects:
swww img <path/to/img> --transition-type center

# Note you may also control the above by setting up the SWWW_TRANSITION_FPS,
# SWWW_TRANSITION_STEP, and SWWW_TRANSITION environment variables.

# To see all options, run
swww img --help
```
If you would like to know the valid values for *\<outputs\>*, you can query the
daemon. This will also tell you what the current image being displayed is, as
well as the dimensions detected for the outputs. If you need more detailed
information, I would recommend using
[`wlr-randr`](https://sr.ht/~emersion/wlr-randr/).
```
swww query
```
Finally, to stop the daemon, kill it:
```
swww kill
```
For a more complete description, run `swww --help` or `swww <subcommand>
--help`.

Finally, to get a feel for what you can do with some shell scripting, check out
the [example_scripts](/example_scripts/) folder. It can help you get started.

## Transitions

#### Example wipe transition:

> wipe transition with angle set to 30 deg

![top transition demonstration](../demos/assets/wipe.gif)

The `left`, `right`, `top` and `bottom` transitions all work similarly.

#### Example outer transition

![outer transition demonstration](../demos/assets/outer.gif)

The `center` transition is the opposite: it starts from the center and goes 
towards the edges.

There is also `simple`, which simply fades into the new image, `any`, which 
starts at a random point with either `center` of `outer` transitions, and `random`,
which selects a transition effect at random.

## Troubleshooting

### High cpu usage during caching of a gif's frames

`swww` will use a non-insignificant amount of cpu power while caching the
images. This will be specially noticeable if the images need to be resized
before being displayed. So, if you have a very large gif, I would recommend
resizing it **before** sending it to `swww`. That would make the caching phase
much faster, and thus ultimately reduce power consumption. I can personally
recommend [`gifsicle`](https://github.com/kohler/gifsicle) for this purpose.

### Wallpaper disappears when reconnecting monitor

`swww` used to cache its images so that it could reload the current the last
displayed image automatically. This lead to many problems and also proved to be
very annoying to keep working with when we updated to
[`sctk 0.17`](https://github.com/Smithay/client-toolkit). So I decided to nuke
it.

If you want a wallpaper to be set automatically when you reconnect to a monitor,
you should use a combination of scripts and a program that lets you run commands
when a new output is connected, like [`kanshi`](https://sr.ht/~emersion/kanshi/).

## About new features

Broadly speaking, **NEW FEATURES WILL NOT BE ADDED, UNLESS THEY ARE EGREGIOUSLY
SIMPLE**. I made `swww` with the specific usecase of making shell scripts in
mind. So, for example, stuff like timed wallpapers, or a setup that loads a
different image at different times of the day, and so on, should all be done by
combining `swww` with other programs (see the [example_scripts](/example_scripts/) for some
examples).

If you really want some new feature within `swww` itself, I would recommend
forking the repository.

## Alternatives

`swww` isn't really the simplest, mostest minimalest software you could find
for managing wallpapers. If you are looking for something simpler, have a look
at the [awesome-wayland repository list of wallpaper programs
](https://github.com/natpen/awesome-wayland#wallpaper). I can personally
recommend:

- [`wbg`](https://codeberg.org/dnkl/wbg) - probably the simplest of them all.
 Strongly recommend if you just care about setting a single png as your
 permanent wallpaper on something like a laptop.
 - [`swaybg`](https://github.com/swaywm/swaybg) - made by the wlroots gods
 themselves.
 - [`mpvpaper`](https://github.com/GhostNaN/mpvpaper) - if you want to display
 videos as your wallpapers. This is also what I used for gifs before making
 `swww`.

## Acknowledgments

A huge thanks to everyone involved in the [smithay](https://github.com/Smithay)
project. Making this program would not have been possible without it. In fact,
the first versions of swww were quite literally copy pasted from the
[layer shell example in the client-toolkit
](https://github.com/Smithay/client-toolkit/blob/master/examples/layer_shell.rs).

A big thank-you also to [HakierGrzonzo](https://github.com/HakierGrzonzo), for
setting up the AUR package.

### Wallpapers used in this README

Pixel Art, by Waneella - https://www.patreon.com/waneella

Gradient - https://www.behance.net/gallery/86128681/Free-Unicorn-Vector-Gradients

Silhouette of Skyway - https://unsplash.com/photos/silhouette-of-skyway-UUJzCuHUfYI
0707010000000D000081A400000000000000000000000165FE2753000000CB000000000000000000000000000000000000001000000000swww-0.9.1/TODOFully automated, complete testing, for every option
	This is annoying because it would involve changing the output scaling and
	testing many things with different setups. Maybe we can script it somehow?
0707010000000E000081A400000000000000000000000165FE2753000002EB000000000000000000000000000000000000001400000000swww-0.9.1/build.rsuse std::io::Error;

use clap::CommandFactory;
use clap_complete::{generate_to, Shell};

include!("src/cli.rs");

const COMPLETION_DIR: &str = "completions";
const APP_NAME: &str = "swww";

fn main() -> Result<(), Error> {
    let outdir = completion_dir()?;
    let mut app = Swww::command();

let shells = [Shell::Bash, Shell::Zsh, Shell::Fish, Shell::Elvish];
    for shell in shells {
        let comp_file = generate_to(shell, &mut app, APP_NAME, &outdir)?;
        println!("cargo:warning=generated shell completion file: {comp_file:?}");
    }
    Ok(())
}

fn completion_dir() -> std::io::Result<PathBuf> {
    let path = PathBuf::from(COMPLETION_DIR);
    if !path.is_dir() {
        std::fs::create_dir(&path)?;
    }
    Ok(path)
}
0707010000000F000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001200000000swww-0.9.1/daemon07070100000010000081A400000000000000000000000165FE275300000305000000000000000000000000000000000000001D00000000swww-0.9.1/daemon/Cargo.toml[package]
name = "swww-daemon"
version = "0.9.1"
authors = ["Leonardo Gibrowski Faé <leonardo.fae44@gmail.com>"]
edition = "2021"

# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

[dependencies]
log = { version = "0.4", features = ["max_level_debug", "release_max_level_info"] }
simplelog = "0.12"

wayland-client = { version = "0.31", default-features = false, features = [ "log" ]}
smithay-client-toolkit = { version = "0.18", default-features = false }

nix = { version = "0.28", default-features = false, features = [ "signal", "poll" ] }
keyframe = "1.1"
rkyv = "0.7"
rayon = "1.9"
spin_sleep = "1.2"

sd-notify = { version = "0.4.1" }

utils = { version = "0.9.1", path = "../utils" }
[dev-dependencies]
rand = "0.8"
07070100000011000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001600000000swww-0.9.1/daemon/src07070100000012000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000002100000000swww-0.9.1/daemon/src/animations07070100000013000081A400000000000000000000000165FE275300000A69000000000000000000000000000000000000003100000000swww-0.9.1/daemon/src/animations/anim_barrier.rsuse std::{
    marker::PhantomData,
    ptr::NonNull,
    sync::{
        atomic::{self, AtomicUsize, Ordering},
        Condvar, Mutex,
    },
    time::Duration,
};

///This is a barrier that lets us dynamically set the amount of threads that have to wait. We use
///this in order to sync the animations, because outputs may be created or deleted during runtime
///
///It automatically keeps track of how many threads own it
pub struct ArcAnimBarrier {
    ptr: NonNull<AnimBarrier>,
    phantom: PhantomData<AnimBarrier>,
}

impl ArcAnimBarrier {
    pub fn new() -> Self {
        let boxed = Box::new(AnimBarrier {
            rc: AtomicUsize::new(1),
            count: Mutex::new(0),
            cvar: Condvar::new(),
        });
        Self {
            ptr: NonNull::new(Box::into_raw(boxed)).unwrap(),
            phantom: PhantomData,
        }
    }

pub fn wait(&self, timeout: Duration) {
        self.get().wait(timeout);
    }

#[inline]
    fn get(&self) -> &AnimBarrier {
        unsafe { self.ptr.as_ref() }
    }
}

impl Clone for ArcAnimBarrier {
    fn clone(&self) -> Self {
        let inner = self.get();

let _ = inner.rc.fetch_add(1, Ordering::Relaxed);

Self {
            ptr: self.ptr,
            phantom: PhantomData,
        }
    }
}

impl Drop for ArcAnimBarrier {
    fn drop(&mut self) {
        let inner = self.get();

if inner.rc.fetch_sub(1, Ordering::Relaxed) != 1 {
            // When someone leaves, increase the counter by 1, since otherwise the other threads
            // might wait forever
            let mut count = inner.count.lock().unwrap();
            *count += 1;
            if inner.rc.load(Ordering::SeqCst) - 1 <= *count {
                *count = 0;
                inner.cvar.notify_all();
            }

return;
        }

// This fence is needed to prevent reordering of the use and deletion
        // of the data.
        atomic::fence(Ordering::Acquire);

let _ = unsafe { Box::from_raw(self.ptr.as_ptr()) };
    }
}

unsafe impl Send for ArcAnimBarrier {}
unsafe impl Sync for ArcAnimBarrier {}

struct AnimBarrier {
    // should ALWAYS be equals to threads
    rc: AtomicUsize,
    count: Mutex<usize>,
    cvar: Condvar,
}

impl AnimBarrier {
    fn wait(&self, timeout: Duration) {
        let mut count = self.count.lock().unwrap();
        *count += 1;

if self.rc.load(Ordering::SeqCst) - 1 > *count {
            let _ = self
                .cvar
                .wait_timeout_while(count, timeout, |count| *count != 0);
        } else {
            *count = 0;
            self.cvar.notify_all();
        }
    }
}
07070100000014000081A400000000000000000000000165FE275300001C01000000000000000000000000000000000000002800000000swww-0.9.1/daemon/src/animations/mod.rsuse log::error;
use rkyv::{boxed::ArchivedBox, string::ArchivedString, Deserialize};

use std::{
    sync::Arc,
    thread::{self, Scope},
    time::Duration,
};

use utils::{
    compression::Decompressor,
    ipc::{
        Answer, ArchivedAnimation, ArchivedImg, ArchivedRequest, ArchivedTransition, BgImg, Request,
    },
};

use crate::wallpaper::{AnimationToken, Wallpaper};

mod anim_barrier;
mod transitions;
use transitions::Transition;

use self::anim_barrier::ArcAnimBarrier;

///The default thread stack size of 2MiB is way too overkill for our purposes
const STACK_SIZE: usize = 1 << 17; //128KiB

pub(super) struct Animator {
    anim_barrier: ArcAnimBarrier,
}

impl Animator {
    pub(super) fn new() -> Self {
        Self {
            anim_barrier: ArcAnimBarrier::new(),
        }
    }

fn spawn_transition_thread<'a, 'b>(
        scope: &'a Scope<'b, '_>,
        transition: &'b ArchivedTransition,
        img: &'b ArchivedBox<[u8]>,
        path: &'b ArchivedString,
        mut wallpapers: Vec<Arc<Wallpaper>>,
    ) where
        'a: 'b,
    {
        if let Err(e) = thread::Builder::new()
            .name("transition".to_string()) //Name our threads  for better log messages
            .stack_size(STACK_SIZE) //the default of 2MB is way too overkill for this
            .spawn_scoped(scope, move || {
                if wallpapers.is_empty() {
                    return;
                }
                for w in wallpapers.iter_mut() {
                    w.set_img_info(BgImg::Img(path.to_string()));
                }
                let dimensions = wallpapers[0].get_dimensions();

if img.len() == dimensions.0 as usize * dimensions.1 as usize * 3 {
                    Transition::new(wallpapers, dimensions, transition.clone()).execute(img);
                } else {
                    error!(
                        "image is of wrong size! Image len: {}, expected size: {}",
                        img.len(),
                        dimensions.0 as usize * dimensions.1 as usize * 3
                    );
                }
            })
        {
            error!("failed to spawn 'transition' thread: {}", e);
        }
    }

pub(super) fn transition(
        &mut self,
        bytes: Vec<u8>,
        wallpapers: Vec<Vec<Arc<Wallpaper>>>,
    ) -> Answer {
        match thread::Builder::new()
            .stack_size(1 << 15)
            .name("transition spawner".to_string())
            .spawn(move || {
                if let ArchivedRequest::Img((transition, imgs)) = Request::receive(&bytes) {
                    thread::scope(|s| {
                        for ((ArchivedImg { img, path }, _), wallpapers) in
                            imgs.iter().zip(wallpapers)
                        {
                            Self::spawn_transition_thread(s, transition, img, path, wallpapers);
                        }
                    });
                }
            }) {
            Ok(_) => Answer::Ok,
            Err(e) => Answer::Err(e.to_string()),
        }
    }

fn spawn_animation_thread<'a, 'b>(
        scope: &'a Scope<'b, '_>,
        animation: &'b ArchivedAnimation,
        mut wallpapers: Vec<Arc<Wallpaper>>,
        barrier: ArcAnimBarrier,
    ) where
        'a: 'b,
    {
        if let Err(e) = thread::Builder::new()
            .name("animation".to_string()) //Name our threads  for better log messages
            .stack_size(STACK_SIZE) //the default of 2MB is way too overkill for this
            .spawn_scoped(scope, move || {
                /* We only need to animate if we have > 1 frame */
                if animation.animation.len() <= 1 {
                    return;
                }
                log::debug!("Starting animation");

let mut tokens: Vec<AnimationToken> = wallpapers
                    .iter()
                    .map(|w| w.create_animation_token())
                    .collect();

for (wallpaper, token) in wallpapers.iter().zip(&tokens) {
                    loop {
                        if !wallpaper.has_animation_id(token) || token.is_transition_done() {
                            break;
                        }
                        let duration: Duration = animation.animation[0]
                            .1
                            .deserialize(&mut rkyv::Infallible)
                            .unwrap();
                        std::thread::sleep(duration / 2);
                    }
                }

let mut now = std::time::Instant::now();

let mut decompressor = Decompressor::new();
                for (frame, duration) in animation.animation.iter().cycle() {
                    let duration: Duration = duration.deserialize(&mut rkyv::Infallible).unwrap();
                    barrier.wait(duration.div_f32(2.0));

let mut i = 0;
                    while i < wallpapers.len() {
                        let token = &tokens[i];
                        if !wallpapers[i].has_animation_id(token) {
                            wallpapers.swap_remove(i);
                            tokens.swap_remove(i);
                            continue;
                        }

let result = wallpapers[i].canvas_change(|canvas| {
                            decompressor.decompress_archived(frame, canvas, crate::pixel_format())
                        });

if let Err(e) = result {
                            error!("failed to unpack frame: {e}");
                            wallpapers.swap_remove(i);
                            tokens.swap_remove(i);
                            continue;
                        }

wallpapers[i].draw();
                        i += 1;
                    }

if wallpapers.is_empty() {
                        return;
                    }

let timeout = duration.saturating_sub(now.elapsed());
                    spin_sleep::sleep(timeout);
                    crate::wake_poll();
                    now = std::time::Instant::now();
                }
            })
        {
            error!("failed to spawn 'animation' thread: {}", e);
        }
    }

pub(super) fn animate(
        &mut self,
        bytes: Vec<u8>,
        wallpapers: Vec<Vec<Arc<Wallpaper>>>,
    ) -> Answer {
        let barrier = self.anim_barrier.clone();
        match thread::Builder::new()
            .stack_size(1 << 15)
            .name("animation spawner".to_string())
            .spawn(move || {
                thread::scope(|s| {
                    if let ArchivedRequest::Animation(animations) = Request::receive(&bytes) {
                        for ((animation, _), wallpapers) in animations.iter().zip(wallpapers) {
                            let barrier = barrier.clone();
                            Self::spawn_animation_thread(s, animation, wallpapers, barrier);
                        }
                    }
                });
            }) {
            Ok(_) => Answer::Ok,
            Err(e) => Answer::Err(e.to_string()),
        }
    }
}
07070100000015000081A400000000000000000000000165FE275300003ADC000000000000000000000000000000000000003000000000swww-0.9.1/daemon/src/animations/transitions.rsuse std::{
    sync::Arc,
    time::{Duration, Instant},
};

use rayon::prelude::*;

use log::debug;
use utils::ipc::{ArchivedPosition, ArchivedTransitionType};

use crate::wallpaper::{AnimationToken, Wallpaper};

use keyframe::{
    functions::BezierCurve, keyframes, mint::Vector2, num_traits::Pow, AnimationSequence,
};

pub(super) struct Transition {
    animation_tokens: Vec<AnimationToken>,
    wallpapers: Vec<Arc<Wallpaper>>,
    dimensions: (u32, u32),
    transition_type: ArchivedTransitionType,
    duration: f32,
    step: u8,
    fps: Duration,
    angle: f64,
    pos: ArchivedPosition,
    bezier: BezierCurve,
    wave: (f32, f32),
    invert_y: bool,
    color_channels: usize,
}

/// All transitions return whether or not they completed
impl Transition {
    pub(super) fn new(
        wallpapers: Vec<Arc<Wallpaper>>,
        dimensions: (u32, u32),
        transition: utils::ipc::ArchivedTransition,
    ) -> Self {
        Transition {
            animation_tokens: wallpapers
                .iter()
                .map(|w| w.create_animation_token())
                .collect(),
            wallpapers,
            dimensions,
            transition_type: transition.transition_type,
            duration: transition.duration,
            step: transition.step,
            fps: Duration::from_nanos(1_000_000_000 / transition.fps as u64),
            angle: transition.angle,
            pos: transition.pos,
            bezier: BezierCurve::from(
                Vector2 {
                    x: transition.bezier.0,
                    y: transition.bezier.1,
                },
                Vector2 {
                    x: transition.bezier.2,
                    y: transition.bezier.3,
                },
            ),
            wave: transition.wave,
            invert_y: transition.invert_y,
            color_channels: crate::pixel_format().channels() as usize,
        }
    }

pub(super) fn execute(mut self, new_img: &[u8]) {
        debug!("Starting transitions");
        match self.transition_type {
            ArchivedTransitionType::Simple => self.simple(new_img),
            ArchivedTransitionType::Wipe => self.wipe(new_img),
            ArchivedTransitionType::Grow => self.grow(new_img),
            ArchivedTransitionType::Outer => self.outer(new_img),
            ArchivedTransitionType::Wave => self.wave(new_img),
            ArchivedTransitionType::Fade => self.fade(new_img),
        };
        debug!("Transitions finished");
        for (wallpaper, token) in self.wallpapers.iter().zip(self.animation_tokens) {
            token.set_transition_done(wallpaper);
        }
    }

fn send_frame(&mut self, now: &mut Instant) {
        let fps = self.fps;
        let mut i = 0;
        while i < self.wallpapers.len() {
            let token = &self.animation_tokens[i];
            if !self.wallpapers[i].has_animation_id(token) {
                self.wallpapers.swap_remove(i);
                self.animation_tokens.swap_remove(i);
                continue;
            }
            i += 1;
        }
        let timeout = fps.saturating_sub(now.elapsed());
        spin_sleep::sleep(timeout);
        crate::wake_poll();
        *now = Instant::now();
    }

fn bezier_seq(&self, start: f32, end: f32) -> (AnimationSequence<f32>, Instant) {
        (
            keyframes![(start, 0.0, self.bezier), (end, self.duration, self.bezier)],
            Instant::now(),
        )
    }

fn simple(&mut self, new_img: &[u8]) {
        let step = self.step;
        let mut now = Instant::now();
        let mut done = false;
        if self.color_channels == 4 {
            while !done {
                done = true;
                for wallpaper in self.wallpapers.iter_mut() {
                    wallpaper.canvas_change(|canvas| {
                        for (old, new) in canvas.chunks_exact_mut(4).zip(new_img.chunks_exact(3)) {
                            for (old, new) in old.iter_mut().zip(new) {
                                if old.abs_diff(*new) < step {
                                    *old = *new;
                                } else if *old > *new {
                                    *old -= step;
                                    done = false;
                                } else {
                                    *old += step;
                                    done = false;
                                }
                            }
                        }
                    });
                    wallpaper.draw();
                }
                self.send_frame(&mut now);
            }
        } else {
            while !done {
                done = true;
                for wallpaper in self.wallpapers.iter_mut() {
                    wallpaper.canvas_change(|canvas| {
                        for (old, new) in canvas.iter_mut().zip(new_img) {
                            if old.abs_diff(*new) < step {
                                *old = *new;
                            } else if *old > *new {
                                *old -= step;
                                done = false;
                            } else {
                                *old += step;
                                done = false;
                            }
                        }
                    });
                    wallpaper.draw();
                }
                self.send_frame(&mut now);
            }
        }
    }

fn fade(&mut self, new_img: &[u8]) {
        let mut step = 0.0;
        let (mut seq, start) = self.bezier_seq(0.0, 1.0);

let mut now = Instant::now();
        while start.elapsed().as_secs_f64() < seq.duration() {
            self.draw_all(new_img, |_, old_col, new_col| {
                *old_col = (*old_col as f64 * (1.0 - step) + *new_col as f64 * step) as u8;
            });
            self.send_frame(&mut now);
            step = seq.now() as f64;
            seq.advance_to(start.elapsed().as_secs_f64());
        }
        self.step = 4 + self.step / 4;
        self.simple(new_img)
    }

fn wave(&mut self, new_img: &[u8]) {
        let width = self.dimensions.0;
        let height = self.dimensions.1;
        let mut now = Instant::now();
        let center = (width / 2, height / 2);
        let screen_diag = ((width.pow(2) + height.pow(2)) as f64).sqrt();

let angle = self.angle.to_radians();
        let (scale_x, scale_y) = (self.wave.0 as f64, self.wave.1 as f64);

let circle_radius = screen_diag / 2.0;

let f = |x: f64| (x / scale_x).sin() * scale_y;

// graph: https://www.desmos.com/calculator/wunde042es
        //
        // checks if a pixel is to the left or right of the line
        let is_low = |x: f64, y: f64, offset: f64| {
            let x = x - center.0 as f64;
            let y = y - center.1 as f64;

let lhs = y * angle.cos() - x * angle.sin();
            let rhs = f(x * angle.cos() + y * angle.sin()) + circle_radius - offset;
            lhs >= rhs
        };

// find the offset to start the transition at
        let mut offset = {
            let mut offset = 0.0;
            for x in 0..width {
                for y in 0..height {
                    if is_low(x as f64, y as f64, offset) {
                        offset += 1.0;
                        break;
                    }
                }
            }
            offset
        };
        let max_offset = 2.0 * circle_radius - offset;
        let (width, height) = (width as usize, height as usize);

let (mut seq, start) = self.bezier_seq(offset as f32, max_offset as f32);

let step = self.step;

while start.elapsed().as_secs_f64() < seq.duration() {
            self.draw_all(new_img, |i, old, new| {
                let pix_x = i % width;
                let pix_y = height - i / width;
                if is_low(pix_x as f64, pix_y as f64, offset) {
                    change_byte(step, old, new);
                }
            });
            self.send_frame(&mut now);

offset = seq.now() as f64;
            seq.advance_to(start.elapsed().as_secs_f64());
        }
        self.step = 4 + self.step / 4;
        self.simple(new_img)
    }

fn wipe(&mut self, new_img: &[u8]) {
        let width = self.dimensions.0;
        let height = self.dimensions.1;
        let mut now = Instant::now();
        let center = (width / 2, height / 2);
        let screen_diag = ((width.pow(2) + height.pow(2)) as f64).sqrt();

let circle_radius = screen_diag / 2.0;
        let max_offset = circle_radius.pow(2) * 2.0;

let angle = self.angle.to_radians();

let mut offset = {
            let (x, y) = angle.sin_cos();
            (x.abs() * width as f64 / 2.0 + y.abs() * height as f64 / 2.0).abs()
        };

// line formula: (x-h)*a + (y-k)*b + C = r^2
        // https://www.desmos.com/calculator/vpvzk12yar
        //
        // checks if a pixel is to the left or right of the line
        let is_low = |pix_x: f64, pix_y: f64, offset: f64, radius: f64| {
            let a = radius * angle.cos();
            let b = radius * angle.sin();
            let x = pix_x - center.0 as f64;
            let y = pix_y - center.1 as f64;
            let res = x * a + y * b + offset;
            res >= radius.pow(2)
        };

let (width, height) = (width as usize, height as usize);
        let (mut seq, start) = self.bezier_seq(0.0, max_offset as f32);

let step = self.step;

while start.elapsed().as_secs_f64() < seq.duration() {
            self.draw_all(new_img, |i, old, new| {
                let pix_x = i % width;
                let pix_y = height - i / width;
                if is_low(pix_x as f64, pix_y as f64, offset, circle_radius) {
                    change_byte(step, old, new);
                }
            });
            self.send_frame(&mut now);

offset = seq.now() as f64;
            seq.advance_to(start.elapsed().as_secs_f64());
        }
        self.step = 4 + self.step / 4;
        self.simple(new_img)
    }

fn grow(&mut self, new_img: &[u8]) {
        let (width, height) = (self.dimensions.0 as f32, self.dimensions.1 as f32);
        let (center_x, center_y) = self.pos.to_pixel(self.dimensions, self.invert_y);
        let mut dist_center: f32 = 0.0;
        let dist_end: f32 = {
            let mut x = center_x;
            let mut y = center_y;
            if x < width / 2.0 {
                x = width - 1.0 - x;
            }
            if y < height / 2.0 {
                y = height - 1.0 - y;
            }
            f32::sqrt(x.pow(2) + y.pow(2))
        };

let (width, height) = (width as usize, height as usize);
        let (center_x, center_y) = (center_x as usize, center_y as usize);

let step = self.step;
        let (mut seq, start) = self.bezier_seq(0.0, dist_end);
        let mut now = Instant::now();
        while start.elapsed().as_secs_f64() < seq.duration() {
            self.draw_all(new_img, |i, old, new| {
                let pix_x = i % width;
                let pix_y = height - i / width;
                let diff_x = pix_x.abs_diff(center_x);
                let diff_y = pix_y.abs_diff(center_y);
                let pix_center_dist = f32::sqrt((diff_x.pow(2) + diff_y.pow(2)) as f32);
                if pix_center_dist <= dist_center {
                    let step = step.saturating_add((dist_center - pix_center_dist).log2() as u8);
                    change_byte(step, old, new);
                }
            });
            self.send_frame(&mut now);

dist_center = seq.now();
            seq.advance_to(start.elapsed().as_secs_f64());
        }
        self.step = 4 + self.step / 4;
        self.simple(new_img)
    }

fn outer(&mut self, new_img: &[u8]) {
        let (width, height) = (self.dimensions.0 as f32, self.dimensions.1 as f32);
        let (center_x, center_y) = self.pos.to_pixel(self.dimensions, self.invert_y);
        let mut dist_center = {
            let mut x = center_x;
            let mut y = center_y;
            if x < width / 2.0 {
                x = width - 1.0 - x;
            }
            if y < height / 2.0 {
                y = height - 1.0 - y;
            }
            f32::sqrt(x.pow(2) + y.pow(2))
        };
        let (width, height) = (width as usize, height as usize);
        let (center_x, center_y) = (center_x as usize, center_y as usize);

let step = self.step;
        let (mut seq, start) = self.bezier_seq(dist_center, 0.0);
        let mut now = Instant::now();
        while start.elapsed().as_secs_f64() < seq.duration() {
            self.draw_all(new_img, |i, old, new| {
                let pix_x = i % width;
                let pix_y = height - i / width;
                let diff_x = pix_x.abs_diff(center_x);
                let diff_y = pix_y.abs_diff(center_y);
                let pix_center_dist = f32::sqrt((diff_x.pow(2) + diff_y.pow(2)) as f32);
                if pix_center_dist >= dist_center {
                    let step = step.saturating_add((pix_center_dist - dist_center).log2() as u8);
                    change_byte(step, old, new);
                }
            });
            self.send_frame(&mut now);

dist_center = seq.now();
            seq.advance_to(start.elapsed().as_secs_f64());
        }
        self.step = 4 + self.step / 4;
        self.simple(new_img)
    }

/// Runs pixels_change_fn for every byte in the old img
    #[inline(always)]
    fn draw_all<F>(&mut self, new_img: &[u8], pixels_change_fn: F)
    where
        F: FnOnce(usize, &mut u8, &u8) + Copy + Send + Sync,
    {
        if self.color_channels == 4 {
            for wallpaper in self.wallpapers.iter_mut() {
                wallpaper.canvas_change(|canvas| {
                    canvas
                        .par_chunks_exact_mut(4)
                        .zip(new_img.par_chunks_exact(3))
                        .enumerate()
                        .for_each(|(i, (old, new))| {
                            for (old, new) in old.iter_mut().zip(new) {
                                pixels_change_fn(i, old, new);
                            }
                        });
                });
                wallpaper.draw();
            }
        } else {
            for wallpaper in self.wallpapers.iter_mut() {
                wallpaper.canvas_change(|canvas| {
                    canvas
                        .par_iter_mut()
                        .zip(new_img.par_iter())
                        .enumerate()
                        .for_each(|(i, (old, new))| {
                            pixels_change_fn(i / 3, old, new);
                        });
                });
                wallpaper.draw();
            }
        }
    }
}

#[inline(always)]
fn change_byte(step: u8, old: &mut u8, new: &u8) {
    if old.abs_diff(*new) < step {
        *old = *new;
    } else if *old > *new {
        *old -= step;
    } else {
        *old += step;
    }
}
07070100000016000081A400000000000000000000000165FE2753000014C2000000000000000000000000000000000000002300000000swww-0.9.1/daemon/src/bump_pool.rsuse std::sync::{
    atomic::{AtomicBool, Ordering},
    Arc,
};

use smithay_client_toolkit::shm::{raw::RawPool, Shm};
use wayland_client::{protocol::wl_buffer::WlBuffer, QueueHandle};

use crate::Daemon;

#[derive(Debug)]
struct Buffer {
    inner: WlBuffer,
    released: Arc<AtomicBool>,
}

impl Buffer {
    fn new(inner: WlBuffer, released: Arc<AtomicBool>) -> Self {
        Self { inner, released }
    }
}

impl Drop for Buffer {
    fn drop(&mut self) {
        self.inner.destroy();
    }
}

#[derive(Debug)]
/// A pool implementation that only gives buffers of a fixed size, creating new ones if none of
/// them are freed. It also takes care of copying the previous buffer's content over to the new one
/// for us
pub(crate) struct BumpPool {
    pool: RawPool,
    buffers: Vec<Buffer>,
    width: i32,
    height: i32,
    last_used_buffer: Option<usize>,
}

impl BumpPool {
    /// We assume `width` and `height` have already been multiplied by their scale factor
    pub(crate) fn new(width: i32, height: i32, shm: &Shm, qh: &QueueHandle<Daemon>) -> Self {
        let len = width as usize * height as usize * crate::pixel_format().channels() as usize;
        let mut pool = RawPool::new(len, shm).expect("failed to create RawPool");
        let released = Arc::new(AtomicBool::new(true));
        let buffers = vec![Buffer::new(
            pool.create_buffer(
                0,
                width,
                height,
                width * crate::pixel_format().channels() as i32,
                crate::wl_shm_format(),
                released.clone(),
                qh,
            ),
            released,
        )];

Self {
            pool,
            buffers,
            width,
            height,
            last_used_buffer: None,
        }
    }

#[inline]
    fn buffer_len(&self) -> usize {
        self.width as usize * self.height as usize * crate::pixel_format().channels() as usize
    }

#[inline]
    fn buffer_offset(&self, buffer_index: usize) -> usize {
        self.buffer_len() * buffer_index
    }

#[inline]
    fn occupied_bytes(&self) -> usize {
        self.buffer_offset(self.buffers.len())
    }

/// resizes the pool and creates a new WlBuffer at the next free offset
    fn grow(&mut self, qh: &QueueHandle<Daemon>) {
        //TODO: CHECK IF WE HAVE SIZE
        let len = self.buffer_len();
        self.pool
            .resize(self.occupied_bytes() + len)
            .expect("failed to resize RawPool");
        let released = Arc::new(AtomicBool::new(true));
        let new_buffer_index = self.buffers.len();
        self.buffers.push(Buffer::new(
            self.pool.create_buffer(
                self.buffer_offset(new_buffer_index).try_into().unwrap(),
                self.width,
                self.height,
                self.width * crate::pixel_format().channels() as i32,
                crate::wl_shm_format(),
                released.clone(),
                qh,
            ),
            released,
        ));
        log::info!(
            "BumpPool with: {} buffers. Size: {}Kb",
            self.buffers.len(),
            self.pool.len() / 1024
        );
    }

/// Returns a drawable surface. If we can't find a free buffer, we request more memory
    ///
    /// This function automatically handles copying the previous buffer over onto the new one
    pub(crate) fn get_drawable(&mut self, qh: &QueueHandle<Daemon>) -> &mut [u8] {
        let (i, buf) = match self
            .buffers
            .iter()
            .enumerate()
            .find(|(_, b)| b.released.load(Ordering::Acquire))
        {
            Some((i, buf)) => (i, buf),
            None => {
                self.grow(qh);
                (self.buffers.len() - 1, self.buffers.last().unwrap())
            }
        };

let len = self.buffer_len();
        let offset = self.buffer_offset(i);
        buf.released.store(false, Ordering::Release);

if let Some(i) = self.last_used_buffer {
            let last_offset = self.buffer_offset(i);
            self.pool
                .mmap()
                .copy_within(last_offset..last_offset + len, offset);
        }
        self.last_used_buffer = Some(i);

&mut self.pool.mmap()[offset..offset + len]
    }

/// gets the last buffer we've drawn to
    ///
    /// This may return None if there was a resize request in-between the last call to get_drawable
    #[inline]
    pub(crate) fn get_commitable_buffer(&self) -> Option<&WlBuffer> {
        self.last_used_buffer.map(|i| &self.buffers[i].inner)
    }

/// We assume `width` and `height` have already been multiplied by their scale factor
    pub(crate) fn resize(&mut self, width: i32, height: i32, qh: &QueueHandle<Daemon>) {
        self.width = width;
        self.height = height;
        self.last_used_buffer = None;
        self.buffers.clear();
        let released = Arc::new(AtomicBool::new(true));
        self.buffers.push(Buffer::new(
            self.pool.create_buffer(
                0,
                width,
                height,
                width * crate::pixel_format().channels() as i32,
                crate::wl_shm_format(),
                released.clone(),
                qh,
            ),
            released,
        ));
    }
}
07070100000017000081A400000000000000000000000165FE275300000A18000000000000000000000000000000000000001D00000000swww-0.9.1/daemon/src/cli.rsuse utils::ipc::PixelFormat;

pub struct Cli {
    pub format: Option<PixelFormat>,
    pub quiet: bool,
}

impl Cli {
    pub fn new() -> Self {
        let mut quiet = false;
        let mut format = None;
        let mut args = std::env::args();
        args.next(); // skip the first argument

while let Some(arg) = args.next() {
            match arg.as_str() {
                "-f" | "--format" => match args.next().as_deref() {
                    Some("xrgb") => format = Some(PixelFormat::Xrgb),
                    Some("xbgr") => format = Some(PixelFormat::Xbgr),
                    Some("rgb") => format = Some(PixelFormat::Rgb),
                    Some("bgr") => format = Some(PixelFormat::Bgr),
                    _ => {
                        eprintln!("`--format` command line option must be one of: 'xrgb', 'xbgr', 'rgb' or 'bgr'");
                        std::process::exit(-2);
                    }
                },
                "-q" | "--quiet" => quiet = true,
                "-h" | "--help" => {
                    println!("swww-daemon");
                    println!();
                    println!("Options:");
                    println!();
                    println!("  -f|--format <xrgb|xbgr|rgb|bgr>");
                    println!("          force the use of a specific wl_shm format.");
                    println!();
                    println!(
                        "          It is generally better to let swww-daemon chose for itself."
                    );
                    println!("          Only use this as a workaround when you run into problems.");
                    println!("          Whatever you chose, make sure you compositor actually supports it!");
                    println!("          'xrgb' is the most compatible one.");
                    println!();
                    println!("  -q|--quiet    will only log errors");
                    println!("  -h|--help     print help");
                    println!("  -V|--version  print version");
                    std::process::exit(0);
                }
                "-V" | "--version" => {
                    println!("swww-daemon {}", env!("CARGO_PKG_VERSION"));
                    std::process::exit(0);
                }
                s => {
                    eprintln!("Unrecognized command line argument: {s}");
                    eprintln!("Run -h|--help to know what arguments are recognized!");
                    std::process::exit(-1);
                }
            }
        }

Self { format, quiet }
    }
}
07070100000018000081A400000000000000000000000165FE275300005C56000000000000000000000000000000000000001E00000000swww-0.9.1/daemon/src/main.rs//! All expects in this program must be carefully chosen on purpose. The idea is that if any of
//! them fail there is no point in continuing. All of the initialization code, for example, is full
//! of `expects`, **on purpose**, because we **want** to unwind and exit when they happen

mod animations;
pub mod bump_pool;
mod cli;
mod wallpaper;
use log::{debug, error, info, warn, LevelFilter};
use nix::{
    poll::{poll, PollFd, PollFlags, PollTimeout},
    sys::signal::{self, SigHandler, Signal},
};
use rkyv::{boxed::ArchivedBox, string::ArchivedString};
use simplelog::{ColorChoice, TermLogger, TerminalMode, ThreadLogMode};
use wallpaper::Wallpaper;

use std::{
    fs,
    num::NonZeroI32,
    os::{
        fd::{AsFd, AsRawFd, OwnedFd},
        unix::net::{UnixListener, UnixStream},
    },
    sync::{
        atomic::{AtomicBool, Ordering},
        Arc, OnceLock,
    },
};

use smithay_client_toolkit::{
    compositor::{CompositorHandler, CompositorState, Region},
    delegate_compositor, delegate_layer, delegate_output, delegate_registry,
    globals::GlobalData,
    output::{OutputHandler, OutputState},
    registry::{ProvidesRegistryState, RegistryState},
    registry_handlers,
    shell::{
        wlr_layer::{Layer, LayerShell, LayerShellHandler, LayerSurface, LayerSurfaceConfigure},
        WaylandSurface,
    },
    shm::{Shm, ShmHandler},
};

use wayland_client::{
    globals::{registry_queue_init, GlobalList},
    protocol::{
        wl_buffer::WlBuffer,
        wl_output,
        wl_shm::{self, WlShm},
        wl_surface,
    },
    Connection, Dispatch, QueueHandle,
};

use utils::ipc::{get_socket_path, Answer, ArchivedRequest, BgInfo, PixelFormat, Request};

use animations::Animator;

// We need this because this might be set by signals, so we can't keep it in the daemon
static EXIT: AtomicBool = AtomicBool::new(false);

#[inline]
fn exit_daemon() {
    EXIT.store(true, Ordering::Release);
}

#[inline]
fn should_daemon_exit() -> bool {
    EXIT.load(Ordering::Acquire)
}

static POLL_WAKER: OnceLock<OwnedFd> = OnceLock::new();
static WL_SHM_FORMAT: OnceLock<wl_shm::Format> = OnceLock::new();
static PIXEL_FORMAT: OnceLock<PixelFormat> = OnceLock::new();

#[inline]
pub fn wl_shm_format() -> wl_shm::Format {
    debug_assert!(WL_SHM_FORMAT.get().is_some());
    *WL_SHM_FORMAT.get().unwrap_or(&wl_shm::Format::Xrgb8888)
}

#[inline]
pub fn pixel_format() -> PixelFormat {
    debug_assert!(PIXEL_FORMAT.get().is_some());
    *PIXEL_FORMAT.get().unwrap_or(&PixelFormat::Xrgb)
}

#[inline]
pub fn wake_poll() {
    debug_assert!(POLL_WAKER.get().is_some());

// SAFETY: POLL_WAKER is set up in setup_signals_and_pipe, which is called early in main
    // and panics if it fails. By the time anyone calls this function, POLL_WAKER will certainly
    // already have been initialized.
    if let Err(e) = nix::unistd::write(unsafe { POLL_WAKER.get().unwrap_unchecked() }.as_fd(), &[0])
    {
        error!("failed to write to pipe file descriptor: {e}");
    }
}

extern "C" fn signal_handler(_s: i32) {
    exit_daemon();
}

fn main() -> Result<(), String> {
    let cli = cli::Cli::new();

if let Some(format) = cli.format {
        PIXEL_FORMAT.set(format).unwrap();
        match format {
            PixelFormat::Xrgb => WL_SHM_FORMAT.set(wl_shm::Format::Xrgb8888),
            PixelFormat::Xbgr => WL_SHM_FORMAT.set(wl_shm::Format::Xbgr8888),
            PixelFormat::Rgb => WL_SHM_FORMAT.set(wl_shm::Format::Rgb888),
            PixelFormat::Bgr => WL_SHM_FORMAT.set(wl_shm::Format::Bgr888),
        }
        .unwrap()
    }

rayon::ThreadPoolBuilder::default()
        .thread_name(|i| format!("rayon thread {i}"))
        .stack_size(1 << 18) // 256KiB; we do not need a large stack
        .build_global()
        .expect("failed to configure rayon global thread pool");
    make_logger(cli.quiet);
    let listener = SocketWrapper::new()?;
    let wake = setup_signals_and_pipe();

let conn = Connection::connect_to_env().expect("failed to connect to the wayland server");
    // Enumerate the list of globals to get the protocols the server implements.
    let (globals, mut event_queue) =
        registry_queue_init(&conn).expect("failed to initialize the event queue");
    let qh = event_queue.handle();

let mut daemon = Daemon::new(&globals, &qh);

if let Ok(true) = sd_notify::booted() {
        if let Err(e) = sd_notify::notify(true, &[sd_notify::NotifyState::Ready]) {
            error!("Error sending status update to systemd: {}", e.to_string());
        }
    }
    info!("Initialization succeeded! Starting main loop...");
    let mut buf = [0; 16];
    while !should_daemon_exit() {
        // Process wayland events
        event_queue
            .flush()
            .expect("failed to flush the event queue");
        let read_guard = event_queue
            .prepare_read()
            .expect("failed to prepare the event queue's read");

let events = {
            let connection_fd = read_guard.connection_fd();
            let waker = wake.as_fd();
            let mut fds = [
                PollFd::new(listener.0.as_fd(), PollFlags::POLLIN),
                PollFd::new(connection_fd, PollFlags::POLLIN | PollFlags::POLLRDBAND),
                PollFd::new(waker, PollFlags::POLLIN),
            ];

match poll(&mut fds, PollTimeout::NONE) {
                Ok(_) => (),
                Err(e) => match e {
                    nix::errno::Errno::EINTR => (),
                    _ => panic!("failed to poll file descriptors: {e}"),
                },
            };

[fds[0].revents(), fds[1].revents(), fds[2].revents()]
        };

if let Some(flags) = events[1] {
            if !flags.is_empty() {
                read_guard.read().expect("failed to read the event queue");
                event_queue
                    .dispatch_pending(&mut daemon)
                    .expect("failed to dispatch events");
            }
        }

if let Some(flags) = events[0] {
            if !flags.is_empty() {
                match listener.0.accept() {
                    Ok((stream, _adr)) => daemon.recv_socket_msg(stream),
                    Err(e) => match e.kind() {
                        std::io::ErrorKind::WouldBlock => (),
                        _ => return Err(format!("failed to accept incoming connection: {e}")),
                    },
                }
            }
        }

if let Some(flags) = events[2] {
            if !flags.is_empty() {
                if let Err(e) = nix::unistd::read(wake.as_raw_fd(), &mut buf) {
                    error!("error reading pipe file descriptor: {e}");
                }
            }
        }
    }

info!("Goodbye!");
    Ok(())
}

/// Returns the file descriptor we should install in the poll handler
fn setup_signals_and_pipe() -> OwnedFd {
    let handler = SigHandler::Handler(signal_handler);
    for signal in [Signal::SIGINT, Signal::SIGQUIT, Signal::SIGTERM] {
        unsafe { signal::signal(signal, handler).expect("failed to install signal handler") };
    }
    let (r, w) = nix::unistd::pipe().expect("failed to create pipe");
    let _ = POLL_WAKER.get_or_init(|| w);
    r
}

/// This is a wrapper that makes sure to delete the socket when it is dropped
/// It also makes sure to set the listener to nonblocking mode
struct SocketWrapper(UnixListener);
impl SocketWrapper {
    fn new() -> Result<Self, String> {
        let socket_addr = get_socket_path();
        let runtime_dir = match socket_addr.parent() {
            Some(path) => path,
            None => return Err("couldn't find a valid runtime directory".to_owned()),
        };

if !runtime_dir.exists() {
            match fs::create_dir(runtime_dir) {
                Ok(()) => (),
                Err(e) => return Err(format!("failed to create runtime dir: {e}")),
            }
        }

let listener = match UnixListener::bind(socket_addr.clone()) {
            Ok(address) => address,
            Err(e) => return Err(format!("couldn't bind socket: {e}")),
        };

debug!(
            "Made socket in {:?} and initialized logger. Starting daemon...",
            listener.local_addr().unwrap() //this should always work if the socket connected correctly
        );

if let Err(e) = listener.set_nonblocking(true) {
            let _ = fs::remove_file(&socket_addr);
            return Err(format!("failed to set socket to nonblocking mode: {e}"));
        }

Ok(Self(listener))
    }
}

impl Drop for SocketWrapper {
    fn drop(&mut self) {
        let socket_addr = get_socket_path();
        if let Err(e) = fs::remove_file(&socket_addr) {
            error!("Failed to remove socket at {socket_addr:?}: {e}");
        }
        info!("Removed socket at {:?}", socket_addr);
    }
}

struct Daemon {
    // Wayland stuff
    layer_shell: LayerShell,
    compositor_state: CompositorState,
    registry_state: RegistryState,
    output_state: OutputState,
    shm: Shm,
    pixel_format: PixelFormat,
    shm_format: wl_shm::Format,

// swww stuff
    wallpapers: Vec<Arc<Wallpaper>>,
    animator: Animator,
}

impl Daemon {
    fn new(globals: &GlobalList, qh: &QueueHandle<Self>) -> Self {
        // The compositor (not to be confused with the server which is commonly called the compositor) allows
        // configuring surfaces to be presented.
        let compositor_state =
            CompositorState::bind(globals, qh).expect("wl_compositor is not available");

let layer_shell = LayerShell::bind(globals, qh).expect("layer shell is not available");

let shm = Shm::bind(globals, qh).expect("wl_shm is not available");

let pixel_format = PixelFormat::Xrgb;
        let shm_format = wl_shm::Format::Xrgb8888;

Self {
            layer_shell,
            // Outputs may be hotplugged at runtime, therefore we need to setup a registry state to
            // listen for Outputs.
            registry_state: RegistryState::new(globals),
            output_state: OutputState::new(globals, qh),
            compositor_state,
            shm,
            pixel_format,
            shm_format,

wallpapers: Vec::new(),
            animator: Animator::new(),
        }
    }

fn recv_socket_msg(&mut self, stream: UnixStream) {
        let bytes = match utils::ipc::read_socket(&stream) {
            Ok(bytes) => bytes,
            Err(e) => {
                error!("FATAL: cannot read socket: {e}. Exiting...");
                exit_daemon();
                return;
            }
        };
        let request = Request::receive(&bytes);
        let answer = match request {
            ArchivedRequest::Animation(animations) => {
                let mut wallpapers = Vec::new();
                for (_, names) in animations.iter() {
                    wallpapers.push(self.find_wallpapers_by_names(names));
                }
                self.animator.animate(bytes, wallpapers)
            }
            ArchivedRequest::Clear(clear) => {
                let wallpapers = self.find_wallpapers_by_names(&clear.outputs);
                let color = clear.color;
                match std::thread::Builder::new()
                    .stack_size(1 << 15)
                    .name("clear".to_string())
                    .spawn(move || {
                        for wallpaper in &wallpapers {
                            wallpaper.stop_animations();
                        }
                        for wallpaper in wallpapers {
                            wallpaper.set_img_info(utils::ipc::BgImg::Color(color));
                            wallpaper.clear(color);
                            wallpaper.draw();
                        }
                        wake_poll();
                    }) {
                    Ok(_) => Answer::Ok,
                    Err(e) => Answer::Err(format!("failed to spawn `clear` thread: {e}")),
                }
            }
            ArchivedRequest::Ping => Answer::Ping(
                self.wallpapers
                    .iter()
                    .all(|w| w.configured.load(std::sync::atomic::Ordering::Acquire)),
            ),
            ArchivedRequest::Kill => {
                exit_daemon();
                Answer::Ok
            }
            ArchivedRequest::Query => Answer::Info(self.wallpapers_info()),
            ArchivedRequest::Img((_, imgs)) => {
                let mut used_wallpapers = Vec::new();
                for img in imgs.iter() {
                    let mut wallpapers = self.find_wallpapers_by_names(&img.1);
                    for wallpaper in wallpapers.iter_mut() {
                        wallpaper.stop_animations();
                    }
                    used_wallpapers.push(wallpapers);
                }
                self.animator.transition(bytes, used_wallpapers);
                Answer::Ok
            }
        };
        if let Err(e) = answer.send(&stream) {
            error!("error sending answer to client: {e}");
        }
    }

fn wallpapers_info(&self) -> Box<[BgInfo]> {
        self.output_state
            .outputs()
            .filter_map(|output| {
                if let Some(info) = self.output_state.info(&output) {
                    if let Some(wallpaper) = self.wallpapers.iter().find(|w| w.has_id(info.id)) {
                        return Some(BgInfo {
                            name: info.name.unwrap_or("?".to_string()),
                            dim: info
                                .logical_size
                                .map(|(width, height)| (width as u32, height as u32))
                                .unwrap_or((0, 0)),
                            scale_factor: info.scale_factor,
                            img: wallpaper.get_img_info(),
                            pixel_format: pixel_format(),
                        });
                    }
                }
                None
            })
            .collect()
    }

fn find_wallpapers_by_names(
        &self,
        names: &ArchivedBox<[ArchivedString]>,
    ) -> Vec<Arc<Wallpaper>> {
        self.output_state
            .outputs()
            .filter_map(|output| {
                if let Some(info) = self.output_state.info(&output) {
                    if let Some(name) = info.name {
                        if names.is_empty() || names.iter().any(|n| n.as_str() == name) {
                            if let Some(wallpaper) =
                                self.wallpapers.iter().find(|w| w.has_id(info.id))
                            {
                                return Some(Arc::clone(wallpaper));
                            }
                        }
                    }
                }
                None
            })
            .collect()
    }
}

impl CompositorHandler for Daemon {
    fn scale_factor_changed(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        surface: &wl_surface::WlSurface,
        new_factor: i32,
    ) {
        for wallpaper in self.wallpapers.iter_mut() {
            if wallpaper.has_surface(surface) {
                wallpaper.resize(None, None, Some(NonZeroI32::new(new_factor).unwrap()));
                return;
            }
        }
    }

fn frame(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        surface: &wl_surface::WlSurface,
        time: u32,
    ) {
        for wallpaper in self.wallpapers.iter_mut() {
            if wallpaper.has_surface(surface) {
                wallpaper.frame_callback_completed(time);
                return;
            }
        }
    }

fn transform_changed(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        _surface: &wl_surface::WlSurface,
        _new_transform: wl_output::Transform,
    ) {
        // do not do anything for now
    }
}

impl OutputHandler for Daemon {
    fn output_state(&mut self) -> &mut OutputState {
        &mut self.output_state
    }

fn new_output(
        &mut self,
        _conn: &Connection,
        qh: &QueueHandle<Self>,
        output: wl_output::WlOutput,
    ) {
        if PIXEL_FORMAT.get().is_none() {
            assert!(PIXEL_FORMAT.set(self.pixel_format).is_ok());
            assert!(WL_SHM_FORMAT.set(self.shm_format).is_ok());
            log::info!("Selected wl_shm format: {:?}", self.shm_format);
        }
        if let Some(output_info) = self.output_state.info(&output) {
            let surface = self.compositor_state.create_surface(qh);

// Wayland clients are expected to render the cursor on their input region.
            // By setting the input region to an empty region, the compositor renders the
            // default cursor. Without this, an empty desktop won't render a cursor.
            if let Ok(region) = Region::new(&self.compositor_state) {
                surface.set_input_region(Some(region.wl_region()));
            }
            let layer_surface = self.layer_shell.create_layer_surface(
                qh,
                surface,
                Layer::Background,
                Some("swww"),
                Some(&output),
            );

if let Some(name) = &output_info.name {
                let name = name.to_owned();
                if let Err(e) = std::thread::Builder::new()
                    .name("cache loader".to_string())
                    .stack_size(1 << 14)
                    .spawn(move || {
                        // Wait for a bit for the output to be properly configured and stuff
                        // this is obviously not ideal, but it solves the vast majority of problems
                        std::thread::sleep(std::time::Duration::from_millis(100));
                        if let Err(e) = utils::cache::load(&name) {
                            warn!("failed to load cache: {e}");
                        }
                    })
                {
                    warn!("failed to spawn `cache loader` thread: {e}");
                }
            }

debug!("New output: {output_info:?}");
            self.wallpapers.push(Arc::new(Wallpaper::new(
                output_info,
                layer_surface,
                &self.shm,
                qh,
            )));
            debug!("Output count: {}", self.wallpapers.len());
        }
    }

fn update_output(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        output: wl_output::WlOutput,
    ) {
        if let Some(output_info) = self.output_state.info(&output) {
            if let Some(output_size) = output_info.logical_size {
                if output_size.0 == 0 || output_size.1 == 0 {
                    error!(
                        "output dimensions cannot be '0'. Received: {:#?}",
                        output_size
                    );
                    return;
                }
                for wallpaper in self.wallpapers.iter_mut() {
                    if wallpaper.has_id(output_info.id) {
                        let (width, height) = (
                            Some(NonZeroI32::new(output_size.0).unwrap()),
                            Some(NonZeroI32::new(output_size.1).unwrap()),
                        );
                        let scale_factor = Some(NonZeroI32::new(output_info.scale_factor).unwrap());
                        wallpaper.resize(width, height, scale_factor);
                        return;
                    }
                }
            }
        }
    }

fn output_destroyed(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        output: wl_output::WlOutput,
    ) {
        if let Some(output_info) = self.output_state.info(&output) {
            self.wallpapers.retain(|w| !w.has_id(output_info.id));
            debug!("Destroyed output: {output_info:?}");
        }
    }
}

impl Dispatch<WlShm, GlobalData> for Daemon {
    fn event(
        state: &mut Self,
        _proxy: &WlShm,
        event: <WlShm as wayland_client::Proxy>::Event,
        _data: &GlobalData,
        _conn: &Connection,
        _qhandle: &QueueHandle<Self>,
    ) {
        match event {
            wl_shm::Event::Format { format: wenum } => match wenum {
                wayland_client::WEnum::Value(format) => {
                    if format == wl_shm::Format::Bgr888 {
                        state.shm_format = wl_shm::Format::Bgr888;
                        state.pixel_format = PixelFormat::Bgr;
                    } else if format == wl_shm::Format::Rgb888
                        && state.pixel_format != PixelFormat::Bgr
                    {
                        state.shm_format = wl_shm::Format::Rgb888;
                        state.pixel_format = PixelFormat::Rgb;
                    } else if format == wl_shm::Format::Xbgr8888
                        && state.pixel_format == PixelFormat::Xrgb
                    {
                        state.shm_format = wl_shm::Format::Xbgr8888;
                        state.pixel_format = PixelFormat::Xbgr;
                    }
                }
                wayland_client::WEnum::Unknown(v) => {
                    error!("Received unknown shm format number {v} from server")
                }
            },
            e => warn!("Unhandled WlShm event: {e:?}"),
        }
    }
}

impl ShmHandler for Daemon {
    fn shm_state(&mut self) -> &mut Shm {
        &mut self.shm
    }
}

impl LayerShellHandler for Daemon {
    fn closed(&mut self, _conn: &Connection, _qh: &QueueHandle<Self>, layer: &LayerSurface) {
        self.wallpapers
            .retain(|w| !w.has_surface(layer.wl_surface()));
    }

fn configure(
        &mut self,
        _conn: &Connection,
        _qh: &QueueHandle<Self>,
        layer: &LayerSurface,
        _configure: LayerSurfaceConfigure,
        _serial: u32,
    ) {
        // we only care about output configs, so we just set the wallpaper as having been
        // configured
        for w in &mut self.wallpapers {
            if w.has_surface(layer.wl_surface()) {
                w.configured
                    .store(true, std::sync::atomic::Ordering::Release);
                break;
            }
        }
    }
}

impl Dispatch<WlBuffer, Arc<AtomicBool>> for Daemon {
    fn event(
        _state: &mut Self,
        _proxy: &WlBuffer,
        event: <WlBuffer as wayland_client::Proxy>::Event,
        data: &Arc<AtomicBool>,
        _conn: &Connection,
        _qhandle: &QueueHandle<Self>,
    ) {
        match event {
            wayland_client::protocol::wl_buffer::Event::Release => {
                data.store(true, Ordering::Release);
            }
            _ => log::error!("There should be no buffer events other than Release"),
        }
    }
}

delegate_compositor!(Daemon);
delegate_output!(Daemon);
delegate_layer!(Daemon);
delegate_registry!(Daemon);

impl ProvidesRegistryState for Daemon {
    fn registry(&mut self) -> &mut RegistryState {
        &mut self.registry_state
    }
    registry_handlers![OutputState];
}

fn make_logger(quiet: bool) {
    let config = simplelog::ConfigBuilder::new()
        .set_thread_level(LevelFilter::Error) // let me see where the processing is happening
        .set_thread_mode(ThreadLogMode::Both)
        .build();

TermLogger::init(
        if quiet {
            LevelFilter::Error
        } else {
            LevelFilter::Debug
        },
        config,
        TerminalMode::Stderr,
        ColorChoice::AlwaysAnsi,
    )
    .expect("Failed to initialize logger. Cancelling...");
}
07070100000019000081A400000000000000000000000165FE275300002367000000000000000000000000000000000000002300000000swww-0.9.1/daemon/src/wallpaper.rsuse utils::ipc::BgImg;

use std::{
    num::NonZeroI32,
    sync::{
        atomic::{AtomicBool, AtomicUsize, Ordering},
        Arc, Condvar, Mutex, RwLock,
    },
};

use smithay_client_toolkit::{
    output::OutputInfo,
    shell::{
        wlr_layer::{Anchor, KeyboardInteractivity, LayerSurface},
        WaylandSurface,
    },
    shm::Shm,
};

use wayland_client::{protocol::wl_surface::WlSurface, QueueHandle};

use crate::{bump_pool::BumpPool, Daemon};

#[derive(Debug)]
struct AnimationState {
    id: AtomicUsize,
    transition_finished: Arc<AtomicBool>,
}

#[derive(Debug)]
pub(super) struct AnimationToken {
    id: usize,
    transition_done: Arc<AtomicBool>,
}

impl AnimationToken {
    pub(super) fn is_transition_done(&self) -> bool {
        self.transition_done.load(Ordering::Acquire)
    }

pub(super) fn set_transition_done(&self, wallpaper: &Wallpaper) {
        if wallpaper.has_animation_id(self) {
            self.transition_done.store(true, Ordering::Release);
        }
    }
}

struct FrameCallbackHandler {
    cvar: Condvar,
    /// This time doesn't really mean anything. We don't really use it for frame timing, but we
    /// store it for the sake of signaling when the compositor emitted the last frame callback
    time: Mutex<Option<u32>>,
}

/// Owns all the necessary information for drawing.
#[derive(Debug)]
struct WallpaperInner {
    width: NonZeroI32,
    height: NonZeroI32,
    scale_factor: NonZeroI32,

pool: BumpPool,
    img: BgImg,
}

pub(super) struct Wallpaper {
    output_id: u32,
    inner: RwLock<WallpaperInner>,
    layer_surface: LayerSurface,

animation_state: AnimationState,
    pub configured: AtomicBool,
    qh: QueueHandle<Daemon>,
    frame_callback_handler: FrameCallbackHandler,
}

impl Wallpaper {
    pub(crate) fn new(
        output_info: OutputInfo,
        layer_surface: LayerSurface,
        shm: &Shm,
        qh: &QueueHandle<Daemon>,
    ) -> Self {
        let (width, height): (NonZeroI32, NonZeroI32) = if let Some(size) = output_info.logical_size
        {
            if size.0 == 0 || size.1 == 0 {
                (256.try_into().unwrap(), 256.try_into().unwrap())
            } else {
                (size.0.try_into().unwrap(), size.1.try_into().unwrap())
            }
        } else {
            (256.try_into().unwrap(), 256.try_into().unwrap())
        };

let scale_factor = NonZeroI32::new(output_info.scale_factor).unwrap();

let frame_callback_handler = FrameCallbackHandler {
            cvar: Condvar::new(),
            time: Mutex::new(Some(0)), // we do not have to wait for the first frame
        };

// Configure the layer surface
        layer_surface.set_anchor(Anchor::all());
        layer_surface.set_exclusive_zone(-1);
        layer_surface.set_margin(0, 0, 0, 0);
        layer_surface.set_keyboard_interactivity(KeyboardInteractivity::None);
        layer_surface.set_size(width.get() as u32, height.get() as u32);
        layer_surface
            .set_buffer_scale(scale_factor.get() as u32)
            .unwrap();
        // commit so that the compositor send the initial configuration
        layer_surface.commit();
        layer_surface
            .wl_surface()
            .frame(qh, layer_surface.wl_surface().clone());

let w = width.get() * scale_factor.get();
        let h = height.get() * scale_factor.get();
        let pool = BumpPool::new(w, h, shm, qh);

Self {
            output_id: output_info.id,
            layer_surface,
            inner: RwLock::new(WallpaperInner {
                width,
                height,
                scale_factor,
                img: BgImg::Color([0, 0, 0]),
                pool,
            }),
            animation_state: AnimationState {
                id: AtomicUsize::new(0),
                transition_finished: Arc::new(AtomicBool::new(false)),
            },
            configured: AtomicBool::new(false),
            qh: qh.clone(),
            frame_callback_handler,
        }
    }

#[inline]
    pub(super) fn has_id(&self, id: u32) -> bool {
        self.output_id == id
    }

#[inline]
    pub(super) fn has_animation_id(&self, token: &AnimationToken) -> bool {
        self.animation_state
            .id
            .load(std::sync::atomic::Ordering::Acquire)
            == token.id
    }

#[inline]
    pub(super) fn has_surface(&self, surface: &WlSurface) -> bool {
        self.layer_surface.wl_surface() == surface
    }

pub(super) fn get_dimensions(&self) -> (u32, u32) {
        let inner = self.inner.read().unwrap();
        let width = inner.width.get() as u32;
        let height = inner.height.get() as u32;
        let scale_factor = inner.scale_factor.get() as u32;
        (width * scale_factor, height * scale_factor)
    }

pub(super) fn canvas_change<F, T>(&self, f: F) -> T
    where
        F: FnOnce(&mut [u8]) -> T,
    {
        let mut inner = self.inner.write().unwrap();
        f(inner.pool.get_drawable(&self.qh))
    }

#[inline]
    pub(super) fn get_img_info(&self) -> BgImg {
        self.inner.read().unwrap().img.clone()
    }

#[inline]
    pub(super) fn create_animation_token(&self) -> AnimationToken {
        let id = self.animation_state.id.load(Ordering::Acquire);
        AnimationToken {
            id,
            transition_done: Arc::clone(&self.animation_state.transition_finished),
        }
    }

#[inline]
    pub(super) fn frame_callback_completed(&self, time: u32) {
        *self.frame_callback_handler.time.lock().unwrap() = Some(time);
        self.frame_callback_handler.cvar.notify_all();
    }

/// Stops all animations with the current id, by increasing that id
    #[inline]
    pub(super) fn stop_animations(&self) {
        self.animation_state.id.fetch_add(1, Ordering::AcqRel);
        self.animation_state
            .transition_finished
            .store(false, Ordering::Release);
    }

pub(super) fn clear(&self, mut color: [u8; 3]) {
        let pixel_format = super::pixel_format();

if pixel_format.must_swap_r_and_b_channels() {
            color.swap(0, 2);
        }

self.canvas_change(|canvas| {
            for pixel in canvas.chunks_exact_mut(pixel_format.channels().into()) {
                pixel[0..3].copy_from_slice(&color);
            }
        })
    }

pub(super) fn set_img_info(&self, img_info: BgImg) {
        log::debug!("output {} - drawing: {}", self.output_id, img_info);
        self.inner.write().unwrap().img = img_info;
    }

pub(super) fn draw(&self) {
        {
            let mut time = self.frame_callback_handler.time.lock().unwrap();
            while time.is_none() {
                log::debug!("waiting for condvar");
                time = self.frame_callback_handler.cvar.wait(time).unwrap();
            }
            *time = None;
        }
        let inner = self.inner.read().unwrap();
        if let Some(buf) = inner.pool.get_commitable_buffer() {
            let width = inner.width.get() * inner.scale_factor.get();
            let height = inner.height.get() * inner.scale_factor.get();
            let surface = self.layer_surface.wl_surface();
            surface.attach(Some(buf), 0, 0);
            drop(inner);
            surface.damage_buffer(0, 0, width, height);
            surface.commit();
            surface.frame(&self.qh, surface.clone());
        } else {
            drop(inner);
            // commit and send another frame request, since we consumed the previous one
            let surface = self.layer_surface.wl_surface();
            surface.commit();
            surface.frame(&self.qh, surface.clone());
        }
    }

pub(super) fn resize(
        &self,
        width: Option<NonZeroI32>,
        height: Option<NonZeroI32>,
        scale_factor: Option<NonZeroI32>,
    ) {
        if let Some(s) = scale_factor {
            self.layer_surface.set_buffer_scale(s.get() as u32).unwrap();
        }
        let mut inner = self.inner.write().unwrap();
        let width = width.unwrap_or(inner.width);
        let height = height.unwrap_or(inner.height);
        let scale_factor = scale_factor.unwrap_or(inner.scale_factor);
        if (width, height, scale_factor) == (inner.width, inner.height, inner.scale_factor) {
            return;
        }
        self.stop_animations();

inner.width = width;
        inner.height = height;
        inner.scale_factor = scale_factor;
        inner.img = BgImg::Color([0, 0, 0]);

let w = width.get() * scale_factor.get();
        let h = height.get() * scale_factor.get();
        inner.pool.resize(w, h, &self.qh);
        drop(inner);

*self.frame_callback_handler.time.lock().unwrap() = Some(0);
        self.layer_surface
            .set_size(width.get() as u32, height.get() as u32);
        self.layer_surface.commit();
        self.layer_surface
            .wl_surface()
            .frame(&self.qh, self.layer_surface.wl_surface().clone());
        self.configured.store(false, Ordering::Release);
    }
}
0707010000001A000081A400000000000000000000000165FE275300000326000000000000000000000000000000000000001500000000swww-0.9.1/deny.toml[advisories]
db-path = "~/.cargo/advisory-db"
db-urls = ["https://github.com/rustsec/advisory-db"]
yanked = "deny"
ignore = []

[bans]
multiple-versions = "warn"
wildcards = "warn"
highlight = "all"
# Certain crates/versions that will be skipped when doing duplicate detection.
skip = []
# Crate dependency trees that will be skipped when doing duplicate detection.
skip-tree = []

[licenses]
# The lint level for crates which do not have a detectable license
allow = [
    "Apache-2.0",
	"Apache-2.0 WITH LLVM-exception", # used by the ravif crate
    "BSD-2-Clause", # used by the ravif crate
    "BSD-3-Clause",
    "GPL-3.0",
    "MIT",
    "Unicode-DFS-2016",
]

[sources]
unknown-registry = "deny"
unknown-git = "deny"
allow-registry = ["https://github.com/rust-lang/crates.io-index"]
allow-git = []
0707010000001B000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000000F00000000swww-0.9.1/doc0707010000001C000081A400000000000000000000000165FE27530000000B000000000000000000000000000000000000001A00000000swww-0.9.1/doc/.gitignoregenerated/
0707010000001D000081ED00000000000000000000000165FE2753000002A2000000000000000000000000000000000000001600000000swww-0.9.1/doc/gen.sh#!/bin/sh

# This script generates man pages in a `doc/generated` directory. In order to
# install these, you need to move the man pages to the appropriate location in
# your system. You should be able to figure out the correct directories by
# running `manpath`.
#
# Package Maintainers: please consult your distribution's specific documentation
# to adapt to whatever idiosyncrasies it may have.

set -e

DIR=$(dirname "$0")
GEN_DIR="$DIR"/generated

if [ ! -d "$GEN_DIR" ]; then
	mkdir -v "$GEN_DIR"
fi

for FILE in "$DIR"/*scd; do
	GEN="$GEN_DIR"/"$(basename --suffix .scd "$FILE")"
	printf "generating %s..." "$GEN"
	scdoc < "$FILE" > "$GEN"
	printf " ...done!\n"
done
0707010000001E000081A400000000000000000000000165FE2753000002E1000000000000000000000000000000000000002600000000swww-0.9.1/doc/swww-clear-cache.1.scdswww-clear-cache(1)

# NAME
swww-clear-cache

# SYNOPSIS
*swww clear-cache*

# OPTIONS

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION

Deletes the `swww` cache directory.

The cache resides at _$XDG_CACHE_HOME/swww_ or _$HOME/.cache/swww_
if $XDG_CACHE_HOME does not exist. For each monitor, there will be a file in
those locations corresponding to the current image/animation being displayed.

Furthermore,  the cache will keep preprocessed versions of `gif`s. So, if you
load a large `gif`, you would have to pay the price for its processing the first
time.

Note that `swww` will automatically delete any preprocessed animation created
with a previous version of `swww` from the cache.

# SEE ALSO
*swww-img*(1)
0707010000001F000081A400000000000000000000000165FE2753000002DC000000000000000000000000000000000000002000000000swww-0.9.1/doc/swww-clear.1.scdswww-clear(1)

# NAME
swww-clear

# SYNOPSIS
*swww clear* [OPTIONS] <COLOR>

# OPTIONS

*-o*, *--outputs*
	Comma separated list of outputs to display the image at. Use *swww query* to
	know which outputs are currently being used.

If it isn't set, the image is displayed on all outputs.

*-h*, *--help*
	Print help (see a summary with '-h')

# COLOR

The color to fill the screen with. It must be given in *RRGGBB*, hex format. Note
there is no prepended '#'. Defaults to *000000*.

# DESCRIPTION
Fills the specified outputs with the given color.

Currently, we *do not* cache this, so if you want a color to be set at
initialization, you must set it every time:

```
swww init && swww clear 1a804a
```

# SEE ALSO
*swww-query*(1)
07070100000020000081A400000000000000000000000165FE27530000036C000000000000000000000000000000000000002100000000swww-0.9.1/doc/swww-daemon.1.scdswww-daemon(1)

# NAME
swww-daemon

# OPTIONS

*-f*,*--format* <xrgb|xbgr|rgb|bgr>
	Force the daemon to use a specific wl_shm format.

IMPORTANT: make sure this is a value your compositor actually supports!
	'swww-daemon' will automatically select the best format for itself during
	initialization; this is only here for fallback, debug, and workaround
	purposes.

*-q*,*--quiet*
	Makes the daemon only log errors.

*-h*, *--help*
	Print help (see a summary with '-h')

*-V*, *--version*
	Print version

# DESCRIPTION

The *swww-daemon* will run continuously, waiting for commands in
_$XDG_RUNTIME_DIR/swww.socket_ (or _/tmp/swww/swww.socket_, if $XDG_RUNTIME_DIR
is not set). The daemon will take care of both creating and deleting that file
when it is initialized or killed.

# SEE ALSO
*swww-init*(1)
07070100000021000081A400000000000000000000000165FE275300001C25000000000000000000000000000000000000001E00000000swww-0.9.1/doc/swww-img.1.scdswww-img(1)

# NAME
swww-img

# SYNOPSIS
*swww img* [OPTIONS] <path/to/img>

# OPTIONS

*-f*, *--filter* <FILTER>
	Filter to use when scaling images

Available options are:

_Nearest_ | _Bilinear_ | _CatmullRom_ | _Mitchell_ | _Lanczos3_

These are offered by the fast_image_resize crate
	(https://docs.rs/fast_image_resize/2.5.0/fast_image_resize/). _Nearest_ is
	what I recommend for pixel art stuff, and ONLY for pixel art stuff. It is
	also the fastest filter.

For non pixel art stuff, I would usually recommend one of the last three,
	though some experimentation will be necessary to see which one you like
	best.

Note you can also pass the flag *--no-resize*, explained below. In which
	case the *--filter* flag will have no effect.

Default is Lanczos3.

*--no-resize*
	Do not resize the image. Equivalent to *--resize* _no_.

If this is set, the image won't be resized, and will be centralized in the
	middle of the screen instead. If it is smaller than the screen's size, it
	will be padded with the value of *--fill_color*, below.

*--resize* <RESIZE>
	Whether to resize the image and the method by which to resize it.

Possible values:
		- _no_:   Do not resize the image
		- _crop_: Resize the image to fill the whole screen, cropping out parts that don't fit
		- _fit_:  Resize the image to fit inside the screen, preserving the original aspect ratio

Default is _crop_.

*--fill-color* <RRGGBB>
	Which color to fill the padding with when not resizing.

Default is _000000_.

*-o*, *--outputs*
	Comma separated list of outputs to display the image at. Use *swww query* to
	know which outputs are currently being used.

If it isn't set, the image is displayed on all outputs.

*-t*, *--transition-type* <TRANSITION_TYPE>
	\[Environment Variable $SWWW_TRANSITION]

Sets the type of transition. Default is _simple_, that fades into the new
	image.

Possible transitions are:

[- _none_
:- _simple_
:- _fade_
:- _left_
:- _right_
:- _top_
:- _bottom_
:- _wipe_
:- _wave_
:- _grow_
:- _center_
:- _any_
:- _outer_
:- _random_

_none_ is an alias to _simple_, that also sets the _transition-step_ to
	255. This has the effect of the transition completing instantly.

_fade_ is like _simple_ but uses bezier curves while fading the image, its a
	more polished looking version of _simple_ with less artifacts

The _left_, _right_, _top_ and _bottom_ options make the transition	happen
	from that position to its opposite in the screen.

_wipe_ is similar to _left_ but allows you to specify the angle for
	transition with the `--transition-angle` flag.

_wave_ is similar to _wipe_ but the sweeping line is wavy. You can control
	the "waviness" with `--transition-wave`.

_grow_ causes a growing circle to transition across the screen and allows
	changing the circle's center position with the `--transition-pos` flag.

_center_ is an alias to _grow_ with position set to center of screen.

_any_ is an alias to _grow_ with position set to a random point on screen.

_outer_ is the same as grow but the circle shrinks instead of growing.

Finally, _random_ will select a transition effect at random

*--transition-step* <0-255>
	\[Environment Variable $SWWW_TRANSITION_STEP]

How fast the transition approaches the new image.

The transition logic works by adding or subtracting from the current rgb
	values until the old image transforms in the new one. This controls by how
	much we add or subtract.

For example, if pixel A is 000010, and we need it to transition to pixel B,
	which is 000020, if *transition-step* is 2, then in one frame pixel A will
	turn to 000012, in the next frame to 000014, and so on.

Larger values will make the transition faster, but more abrupt. A value of
	255 will always switch to the new image immediately.

Default is 90.
	If *transition-type* is _simple_, default is 2.

*--transition-duration* <seconds (can have decimals)>
	\[Environment Variable $SWWW_TRANSITION_DURATION]

How long the transition takes to complete, in seconds.

Note this doesn't work with the _simple_ transition.

Default is 3.

*--transition-fps* <frames per second (max 255)>
	\[Environment Variable: $SWWW_TRANSITION_FPS]

Frame rate for the transition effect.

Note there is no point in setting this to a value smaller than what your
	monitor supports.

Also note this is **different** from the transition-step. That one controls
	by how much we approach the new image every frame.

Default is 30.

*--transition-angle* <angle, in degrees (parsed as a float)>
	\[Environment Variable: SWWW_TRANSITION_ANGLE]

This is used for the _wipe_ and _wave_ transitions. It controls the angle of
	the wipe.

Note that the angle is in degrees, where '0' is right to left and '90'
	is top to bottom, and '270' bottom to top

Default is 45.

*--transition-pos* <x,y>
	\[Environment Variable: SWWW_TRANSITION_POS]

This is only used for the _grow_ and _outer_ transitions. It controls the
	center of circle (default is _center_).

Position values can be given in both percentage values and pixel values:
	float values are interpreted as percentages and integer values as pixel
	values. Eg.: 0.5,0.5 means 50% of the screen width and 50% of the screen
	height, while 200,400 means 200 pixels from the left and 400 pixels from the
	bottom.

The value can also be an alias which will set the position accordingly:
[- _center_
:- _top_
:- _left_
:- _right_
:- _bottom_
:- _top-left_
:- _top-right_
:- _bottom-left_
:- _bottom-right_

Default is _center_.

*--invert-y* <bool>
	\[Environment Variable: SWWW_INVERT_Y]

inverts the y position sent in `transiiton_pos` flag

*--transition-bezier* <f1,f2,f3,f4 (all floats)>
	\[Environment Variable: SWWW_TRANSITION_BEZIER]

Bezier curve to use for the transition animation. https://cubic-bezier.com
	is a good website to get these values from.

eg: 0.0,0.0,1.0,1.0 for linear animation

Default is .54,0,.34,.99

*--transition-wave* <width,height (both floats)>
	\[Environment Variable: SWWW_TRANSITION_WAVE]

Currently only used for _wave_ transition to control the width and height of
	each wave.

Default is : 20,20

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION
Sends an image (or animated gif) for the daemon to display. You can also use `-`
to read from stdin instead.

# ABOUT THE CACHE

The images sent will be cached at _$XDG_CACHE_HOME/swww_ or _$HOME/.cache/swww_
if $XDG_CACHE_HOME does not exist. For each monitor, there will be a file in
those locations corresponding to the current image/animation being displayed.
Importantly, **cache will only be loaded during initialization if you use swww
init**. That is, calling `swww-daemon` directly will **NOT** load the cache, but
calling `swww-init` will.

The `swww-daemon` will actually wait until the first image has been set before
trying to load the cache.

Finally, the cache will keep preprocessed versions of `gif`s. So, if you load a
large `gif`, you would have to pay the price for its processing the first time.
If you constantly load large `gif`s, this could cause the cache to get very big.
You can simply run `swww clean-cache` if this happens.

# SEE ALSO
*swww-clear-cache*(1) *swww-daemon*(1) *swww-query*(1)
07070100000022000081A400000000000000000000000165FE275300000500000000000000000000000000000000000000001F00000000swww-0.9.1/doc/swww-init.1.scdswww-init(1)

# NAME
swww-init (DEPRECATED)

# SYNOPSIS
*swww init* [--no-daemon] [--no-cache] [--format <xrgb|xbgr|rgb|bgr>]

# OPTIONS

*--no-daemon*
	Don't fork the daemon. This will keep it running in the current terminal.

The only reason to do this would be to see the daemon's logs. Note that for
	release builds we only log info, warnings and errors, so you won't be seeing
	much (ideally). This is mostly useful for debugging and developing.

*--no-cache*
	Don't load the cache *during initialization* (it still loads on monitor
	(re)connection).

If want to always pass an image for 'swww' to load, this option can help make the
	results some reliable: 'swww init --no-cache && swww img <some img>'

*--format* <xrgb|xbgr|rgb|bgr>
	Force the daemon to use a specific wl_shm format.

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION

Initializes the daemon. This is used to be the recommended way of doing it, but
that is no longer the case. You should call 'swww-daemon' directly instead.

# SEE ALSO
*swww-daemon*(1)
07070100000023000081A400000000000000000000000165FE27530000022A000000000000000000000000000000000000001F00000000swww-0.9.1/doc/swww-kill.1.scdswww-kill(1)

# NAME
swww-kill

# SYNOPSIS
*swww kill*

# OPTIONS

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION

Kills the daemon. This is the recommended way of doing it, since we wait to make
sure the socket file was deleted, thus confirming the daemon exited.

Note that sending SIGTERM to the daemon would work correctly, but sending
SIGKILL would make daemon leave behind the socket file. This is not a big
problem; it would only cause a warning to be printed next time the daemon is
initialized.

# SEE ALSO
*swww-daemon*(1)
07070100000024000081A400000000000000000000000165FE2753000002E8000000000000000000000000000000000000002000000000swww-0.9.1/doc/swww-query.1.scdswww-query(1)

# NAME
swww-query

# SYNOPSIS
*swww query*

# OPTIONS

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION

Asks the daemon to print output information (names and dimensions).

You may use this to find out valid values for the <swww-img --outputs> option. If
you want more detailed information about your outputs, I would recommend trying
something like *wlr-randr*.

# OUTPUT FORMAT

Currently, *swww query* prints information in the following format:

```
OUTPUT: SIZE, scale: SCALE, currently displaying: IMAGE_OR_COLOR
```

where *SIZE* is in the format *WxH* (eg.: *1920x1080*), *SCALE* in "scale:
NUMBER", and *IMAGE_OR_COLOR* in
	- "image: IMAGENAME", if it's an image; or
	- "color: RGB", if it's a color
07070100000025000081A400000000000000000000000165FE27530000029B000000000000000000000000000000000000002200000000swww-0.9.1/doc/swww-restore.1.scdswww-restore(1)

# NAME
swww-restore

# SYNOPSIS
*swww restore*

# OPTIONS

*-o*, *--outputs*
	Comma separated list of outputs to restore. Use *swww query* to know which
	outputs are currently being used.

If it isn't set, all outputs will be restored.

*-h*, *--help*
	Print help (see a summary with '-h')

# DESCRIPTION

Restores the last displayed image on the specified outputs.

This can be used to split initialization (with `swww init --no-daemon`) and
cache loading into different steps, in order to avoid race condition traps.

You can also use this command to restore the last displayed image when
reconnecting a monitor.

# SEE ALSO
*swww-clear-cache*(1)
07070100000026000081A400000000000000000000000165FE2753000006DC000000000000000000000000000000000000001A00000000swww-0.9.1/doc/swww.1.scdswww(1)

# NAME
swww - A Solution to your Wayland Wallpaper Woes

# SYNOPSIS
*swww* <COMMAND>

# COMMANDS

*clear*
	Fills the specified outputs with the given color

*restore*
	Restores the last displayed image on the specified outputs

*clear-cache*
	Fills the specified outputs with the given color

*img*
	Sends an image (or animated gif) for the daemon to display

*init*
	Initializes the daemon

*kill*
	Kills the daemon

*query*
	Asks the daemon to print output information (names and dimensions)

*help [COMMAND]*
	Print help or the help of the given command

# OPTIONS

*-h*, *--help*
	Print help (see a summary with '-h')

*-V*, *--version*
	Print  version

# DESCRIPTION
*swww* is a wallpaper manager that lets you change what your monitors display as
a background by controlling the *swww-daemon* at runtime.

It supports animated gifs and putting different stuff in different monitors. I
also did my best to make it as resource efficient as possible.

To start, begin by running *swww init*. That will set up the *swww-daemon*.
Then, you can send images to be displayed with *swww img*. To kill the daemon,
use *swww kill*.

*Note that swww only works in a compositor that implements the layer-shell
protocol*. Typically, _wlr-roots_ based compositors.

# FILES
*swww* will create the following files in your system:
	- A socket in _$XDG_RUNTIME_DIR/swww.socket_ or _/tmp/swww/swww.socket_, if
	  $XDG_RUNTIME_DIR does not exist.
	- Cache files in _$XDG_CACHE_HOME/swww_ or _$HOME/.cache/swww_ if
	  $XDG_CACHE_HOME does not exist. These are used to set the wallpaper to the
	  previous image when a monitor is (re)connected or turned on.

# SEE ALSO
*swww-daemon*(1) *swww-clear*(1) *swww-img*(1) *swww-init*(1) *swww-kill*(1)
*swww-query*(1)
07070100000027000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001B00000000swww-0.9.1/example_scripts07070100000028000081A400000000000000000000000165FE2753000001BF000000000000000000000000000000000000002500000000swww-0.9.1/example_scripts/README.mdIn here you will find example scripts to help you get started writing your own
scripts to work with `swww` for various effects. Currently, there are scripts
for:

* Randomly going through the images in a directory (swww_randomize.sh)
  * Changing with which image `swww` is initialized according to the time of day
  (swww_init_according_to_time_of_day.sh)
  * Scheduling changes to the wallpaper at different times of day
  (swww_scheduler.sh)
07070100000029000081ED00000000000000000000000165FE2753000003CB000000000000000000000000000000000000004100000000swww-0.9.1/example_scripts/swww_init_according_to_time_of_day.sh#!/bin/sh

# This allows you to control which image to init the daemon with according
# to the time of day. You may change the match cases as you see fit.
# This currently only takes hours into account, but it should be easy to
# modify to also use minutes, or days of the week, if you want.
#
# Use it simply by calling this script instead of swww init

case $(date +%H) in
	00 | 01 | 02 | 03 | 04 | 05 | 06 | 07) # First 8 hours of the day
		# Uncomment below to setup the image you wish to display as your
		# wallpaper if you run this script during the first 8 hours of the
		# day

# swww init && swww img path/to/img
		;;
	08 | 09 | 10 | 11 | 12 | 13 | 14 | 15) # Middle 8 hours of the day
		# Same as above, but for the middle 8 hours of the day

# swww init && swww img path/to/img
		;;
	16 | 17 | 18 | 19 | 20 | 21 | 22 | 23) # Final 8 hours of the day
		# Same as above, but for the final 8 hours of the day

# swww init && swww img path/to/img
		;;
esac
0707010000002A000081ED00000000000000000000000165FE2753000002E3000000000000000000000000000000000000002D00000000swww-0.9.1/example_scripts/swww_randomize.sh#!/bin/bash

# This script will randomly go through the files of a directory, setting it
# up as the wallpaper at regular intervals
#
# NOTE: this script is in bash (not posix shell), because the RANDOM variable
# we use is not defined in posix

if [[ $# -lt 1 ]] || [[ ! -d $1   ]]; then
	echo "Usage:
	$0 <dir containing images>"
	exit 1
fi

# Edit below to control the images transition
export SWWW_TRANSITION_FPS=60
export SWWW_TRANSITION_STEP=2

# This controls (in seconds) when to switch to the next image
INTERVAL=300

while true; do
	find "$1" -type f \
		| while read -r img; do
			echo "$((RANDOM % 1000)):$img"
		done \
		| sort -n | cut -d':' -f2- \
		| while read -r img; do
			swww img "$img"
			sleep $INTERVAL
		done
done
0707010000002B000081ED00000000000000000000000165FE2753000003BF000000000000000000000000000000000000002D00000000swww-0.9.1/example_scripts/swww_scheduler.sh#!/bin/sh

# This is a script to help you schedule image switching at different times of
# the day. You may use it as-is or as inspiration for something else

if [ $# -lt 2 ]; then
	echo "Usage:
	$0 <path/to/img [optional arguments to pass to swww]> <time in HH:MM format>

This will use the 'at' command to schedule the image switch.
You can control the transition fps or step by passing the respective options:

$0 'path/to/img --transition-fps 60 --transition-step 5' '18:00'
"
	exit 1
fi

if ! type "at" > /dev/null 2>&1; then
	echo "ERROR: 'at' command doesn't exist!"
	exit 1
fi

echo "swww img $1" | at "$2"

# NOTE: the above line is really the only one that matters, so if you are
# making a script and want to schedule a bunch of things at once, I recommend
# creating a function, like:
#
# swww_schedule() {
#     echo "swww img $1" | at "$2"
# }
#
# Then, you can simply call:
#     swww_schedule <path/to/img> <HH:MM>
# as many time as you need
0707010000002C000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000000F00000000swww-0.9.1/src0707010000002D000081A400000000000000000000000165FE2753000047A5000000000000000000000000000000000000001600000000swww-0.9.1/src/cli.rs/// Note: this file only has basic declarations and some definitions in order to be possible to
/// import it in the build script, to automate shell completion
use clap::{Parser, ValueEnum};
use std::path::PathBuf;

fn from_hex(hex: &str) -> Result<[u8; 3], String> {
    let chars = hex
        .chars()
        .filter(|&c| c.is_ascii_alphanumeric())
        .map(|c| c.to_ascii_uppercase() as u8);

if chars.clone().count() != 6 {
        return Err(format!(
            "expected 6 characters, found {}",
            chars.clone().count()
        ));
    }

let mut color = [0, 0, 0];

for (i, c) in chars.enumerate() {
        match c {
            b'A'..=b'F' => color[i / 2] += c - b'A' + 10,
            b'0'..=b'9' => color[i / 2] += c - b'0',
            _ => {
                return Err(format!(
                    "expected [0-9], [a-f], or [A-F], found '{}'",
                    char::from(c)
                ))
            }
        }
        if i % 2 == 0 {
            color[i / 2] *= 16;
        }
    }
    Ok(color)
}

#[derive(Clone, ValueEnum)]
pub enum PixelFormat {
    /// No swap, can copy directly onto WlBuffer
    Bgr,
    /// Swap R and B channels at client, can copy directly onto WlBuffer
    Rgb,
    /// No swap, must extend pixel with an extra byte when copying
    Xbgr,
    /// Swap R and B channels at client, must extend pixel with an extra byte when copying
    Xrgb,
}

#[derive(Clone)]
pub enum Filter {
    Nearest,
    Bilinear,
    CatmullRom,
    Mitchell,
    Lanczos3,
}

impl std::str::FromStr for Filter {
    type Err = &'static str;

fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "Nearest" => Ok(Self::Nearest),
            "Bilinear" => Ok(Self::Bilinear),
            "CatmullRom" => Ok(Self::CatmullRom),
            "Mitchell" => Ok(Self::Mitchell),
            "Lanczos3" => Ok(Self::Lanczos3),
            _ => Err("unrecognized filter. Valid filters are:\
                     Nearest | Bilinear | CatmullRom | Mitchell | Lanczos3\
                     see swww img --help for more details"),
        }
    }
}

#[derive(Clone)]
pub enum TransitionType {
    None,
    Simple,
    Fade,
    Left,
    Right,
    Top,
    Bottom,
    Center,
    Outer,
    Any,
    Random,
    Wipe,
    Wave,
    Grow,
}

impl std::str::FromStr for TransitionType {
    type Err = &'static str;

fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "none" => Ok(Self::None),
            "simple" => Ok(Self::Simple),
            "left" => Ok(Self::Left),
            "right" => Ok(Self::Right),
            "top" => Ok(Self::Top),
            "bottom" => Ok(Self::Bottom),
            "wipe" => Ok(Self::Wipe),
            "grow" => Ok(Self::Grow),
            "center" => Ok(Self::Center),
            "outer" => Ok(Self::Outer),
            "any" => Ok(Self::Any),
            "wave" => Ok(Self::Wave),
            "random" => Ok(Self::Random),
            "fade" => Ok(Self::Fade),
            _ => Err("unrecognized transition type.\nValid transitions are:\n\
                     \tsimple | fade | left | right | top | bottom | wipe | grow | center | outer | random | wave\n\
                     see swww img --help for more details"),
        }
    }
}

#[derive(Clone)]
pub enum CliCoord {
    Percent(f32),
    Pixel(f32),
}

#[derive(Clone)]
pub struct CliPosition {
    pub x: CliCoord,
    pub y: CliCoord,
    //Unknown(f32, f32),
}

impl CliPosition {
    pub fn new(x: CliCoord, y: CliCoord) -> Self {
        Self { x, y }
    }
}

#[derive(Parser)]
#[command(version, name = "swww")]
///A Solution to your Wayland Wallpaper Woes
///
///Change what your monitors display as a background by controlling the swww daemon at runtime.
///Supports animated gifs and putting different stuff in different monitors. I also did my best to
///make it as resource efficient as possible.
///
///Note `swww` will only work in a compositor that implements the layer-shell protocol. Typically,
///wlr-roots based compositors.
pub enum Swww {
    ///Fills the specified outputs with the given color.
    ///
    ///Defaults to filling all outputs with black.
    Clear(Clear),

///Restores the last displayed image on the specified outputs.
    Restore(Restore),

///Clears the swww cache.
    ///
    ///We currently store the address of the last file set as wallpaper for each monitor, as well
    ///as the animation frames of every gif ever set for a given version of `swww`.
    ClearCache,

/// Sends an image (or animated gif) for the daemon to display.
    ///
    /// Use `-` to read from stdin
    Img(Img),

/// Initializes the daemon.
    ///
    /// Exits if there is already a daemon running. We check that by seeing if
    /// $XDG_RUNTIME_DIR/swww.socket exists.
    Init {
        ///Don't fork the daemon. This will keep it running in the current terminal.
        ///
        ///The only advantage of this would be seeing the logging real time. Note that for release
        ///builds we only log info, warnings and errors, so you won't be seeing much (ideally).
        #[clap(long)]
        no_daemon: bool,

///Don't load the cache *during initialization* (it still loads on monitor (re)connection)
        ///
        ///If want to always pass an image for `swww` to load, this option can help make the
        ///results some reliable: `swww init --no-cache && swww img <some img>`
        #[clap(long)]
        no_cache: bool,

/// Force the daemon to use a specific wl_shm format
        ///
        /// IMPORTANT: make sure this is a value your compositor actually supports! `swww` will
        /// automatically select the best format for itself during initialization; this is only
        /// here for fallback, debug, and workaround purposes
        #[clap(long)]
        format: Option<PixelFormat>,
    },

///Kills the daemon
    Kill,

///Asks the daemon to print output information (names and dimensions).
    ///
    ///You may use this to find out valid values for the <swww-img --outputs> option. If you want
    ///more detailed information about your outputs, I would recommend trying wlr-randr.
    Query,
}

#[derive(Parser)]
pub struct Clear {
    /// Color to fill the screen with.
    ///
    /// Must be given in rrggbb format (note there is no prepended '#').
    #[arg(value_parser = from_hex, default_value = "000000")]
    pub color: [u8; 3],

/// Comma separated list of outputs to display the image at.
    ///
    /// If it isn't set, the image is displayed on all outputs.
    #[clap(short, long, default_value = "")]
    pub outputs: String,
}

#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Hash, ValueEnum)]
pub enum ResizeStrategy {
    /// Do not resize the image
    ///
    /// If this is set, the image won't be resized, and will be centralized in the middle of the
    /// screen instead. If it is smaller than the screen's size, it will be padded with the value
    /// of `fill_color`, below.
    No,
    #[default]
    /// Resize the image to fill the whole screen, cropping out parts that don't fit
    Crop,
    /// Resize the image to fit inside the screen, preserving the original aspect ratio
    Fit,
}

#[derive(Parser)]
pub struct Restore {
    /// Comma separated list of outputs to restore.
    ///
    /// If it isn't set, all outputs will be restored.
    #[arg(short, long, default_value = "")]
    pub outputs: String,
}

#[derive(Parser)]
pub struct Img {
    /// Path to the image to display
    pub path: PathBuf,

/// Comma separated list of outputs to display the image at.
    ///
    /// If it isn't set, the image is displayed on all outputs.
    #[arg(short, long, default_value = "")]
    pub outputs: String,

/// Do not resize the image. Equivalent to `--resize=no`
    ///
    /// If this is set, the image won't be resized, and will be centralized in the middle of the
    /// screen instead. If it is smaller than the screen's size, it will be padded with the value
    /// of `fill_color`, below.
    #[deprecated(since = "0.7.3", note = "use `resize` instead")]
    #[arg(long)]
    pub no_resize: bool,

/// Whether to resize the image and the method by which to resize it
    #[arg(
        long,
        default_value = "crop",
        default_value_if("no_resize", "true", "no")
    )]
    pub resize: ResizeStrategy,

/// Which color to fill the padding with when output image does not fill screen
    #[arg(value_parser = from_hex, long, default_value = "000000")]
    pub fill_color: [u8; 3],

///Filter to use when scaling images (run swww img --help to see options).
    ///
    ///Available options are:
    ///
    ///Nearest | Bilinear | CatmullRom | Mitchell | Lanczos3
    ///
    ///These are offered by the fast_image_resize crate
    ///(https://docs.rs/fast_image_resize/2.5.0/fast_image_resize/). 'Nearest' is
    ///what I recommend for pixel art stuff, and ONLY for pixel art stuff. It is also the
    ///fastest filter.
    ///
    ///For non pixel art stuff, I would usually recommend one of the last three, though some
    ///experimentation will be necessary to see which one you like best. Also note they are
    ///all slower than Nearest.
    #[arg(short, long, default_value = "Lanczos3")]
    pub filter: Filter,

///Sets the type of transition. Default is 'simple', that fades into the new image
    ///
    ///Possible transitions are:
    ///
    ///none | simple | fade | left | right | top | bottom | wipe | wave | grow | center | any | outer | random
    ///
    ///The 'left', 'right', 'top' and 'bottom' options make the transition happen from that
    ///position to its opposite in the screen.
    ///
    ///'none' is an alias to 'simple' that also sets the 'transition-step' to 255. This has the
    ///effect of the transition finishing instantly
    ///
    ///'fade' is similar to 'simple' but the fade is controlled through the --transition-bezier flag
    ///
    ///'wipe' is similar to 'left' but allows you to specify the angle for transition with the `--transition-angle` flag.
    ///
    ///'wave' is similar to 'wipe' sweeping line is wavy
    ///
    ///'grow' causes a growing circle to transition across the screen and allows changing the circle's center
    /// position with the `--transition-pos` flag.
    ///
    ///'center' is an alias to 'grow' with position set to center of screen.
    ///
    ///'any' is an alias to 'grow' with position set to a random point on screen.
    ///
    ///'outer' is the same as grow but the circle shrinks instead of growing.
    ///
    ///Finally, 'random' will select a transition effect at random
    #[arg(short, long, env = "SWWW_TRANSITION", default_value = "simple")]
    pub transition_type: TransitionType,

///How fast the transition approaches the new image.
    ///
    ///The transition logic works by adding or subtracting from the current rgb values until the
    ///old image transforms in the new one. This controls by how much we add or subtract.
    ///
    ///Larger values will make the transition faster, but more abrupt. A value of 255 will always
    ///switch to the new image immediately.
    ///
    /// This defaults to 2 when transition-type is 'simple', and 90 otherwise
    #[arg(
        long,
        env = "SWWW_TRANSITION_STEP",
        default_value = "90",
        default_value_if("transition_type", "simple", "2")
    )]
    pub transition_step: u8,

///How long the transition takes to complete in seconds.
    ///
    ///Note that this doesn't work with the 'simple' transition
    #[arg(long, env = "SWWW_TRANSITION_DURATION", default_value = "3")]
    pub transition_duration: f32,

///Frame rate for the transition effect.
    ///
    ///Note there is no point in setting this to a value smaller than what your monitor supports.
    ///
    ///Also note this is **different** from the transition-step. That one controls by how much we
    ///approach the new image every frame.
    #[arg(long, env = "SWWW_TRANSITION_FPS", default_value = "30")]
    pub transition_fps: u16,

///This is used for the 'wipe' and 'wave' transitions. It controls the angle of the wipe
    ///
    ///Note that the angle is in degrees, where '0' is right to left and '90' is top to bottom, and '270' bottom to top
    #[arg(long, env = "SWWW_TRANSITION_ANGLE", default_value = "45")]
    pub transition_angle: f64,

///This is only used for the 'grow','outer' transitions. It controls the center of circle (default is 'center').
    ///
    ///Position values can be given in both percentage values and pixel values:
    ///  float values are interpreted as percentages and integer values as pixel values
    ///  eg: 0.5,0.5 means 50% of the screen width and 50% of the screen height
    ///      200,400 means 200 pixels from the left and 400 pixels from the bottom
    ///
    ///the value can also be an alias which will set the position accordingly):
    /// 'center' | 'top' | 'left' | 'right' | 'bottom' | 'top-left' | 'top-right' | 'bottom-left' | 'bottom-right'
    #[arg(long, env = "SWWW_TRANSITION_POS", default_value = "center", value_parser=parse_coords)]
    pub transition_pos: CliPosition,

/// inverts the y position sent in 'transiiton_pos' flag
    #[arg(long, env = "INVERT_Y", default_value = "false")]
    pub invert_y: bool,

///bezier curve to use for the transition
    ///https://cubic-bezier.com is a good website to get these values from
    ///
    ///eg: 0.0,0.0,1.0,1.0 for linear animation
    #[arg(long, env = "SWWW_TRANSITION_BEZIER", default_value = ".54,0,.34,.99", value_parser = parse_bezier)]
    pub transition_bezier: (f32, f32, f32, f32),

///currently only used for 'wave' transition to control the width and height of each wave
    #[arg(long, env = "SWWW_TRANSITION_WAVE", default_value = "20,20", value_parser = parse_wave)]
    pub transition_wave: (f32, f32),
}

fn parse_wave(raw: &str) -> Result<(f32, f32), String> {
    let mut iter = raw.split(',');
    let mut parse = || {
        iter.next()
            .ok_or_else(|| "Not enough values".to_string())
            .and_then(|s| s.parse::<f32>().map_err(|e| e.to_string()))
    };

let parsed = (parse()?, parse()?);
    Ok(parsed)
}

fn parse_bezier(raw: &str) -> Result<(f32, f32, f32, f32), String> {
    let mut iter = raw.split(',');
    let mut parse = || {
        iter.next()
            .ok_or_else(|| "Not enough values".to_string())
            .and_then(|s| s.parse::<f32>().map_err(|e| e.to_string()))
    };

let parsed = (parse()?, parse()?, parse()?, parse()?);
    if parsed == (0.0, 0.0, 0.0, 0.0) {
        return Err("Invalid bezier curve: 0,0,0,0 (try using 0,0,1,1 instead)".to_string());
    }
    Ok(parsed)
}

// parses Percents and numbers in format of "<coord1>,<coord2>"
fn parse_coords(raw: &str) -> Result<CliPosition, String> {
    let coords = raw.split(',').map(|s| s.trim()).collect::<Vec<&str>>();
    if coords.len() != 2 {
        match coords[0] {
            "center" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.5),
                    CliCoord::Percent(0.5),
                ));
            }
            "top" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.5),
                    CliCoord::Percent(1.0),
                ));
            }
            "bottom" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.5),
                    CliCoord::Percent(0.0),
                ));
            }
            "left" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.0),
                    CliCoord::Percent(0.5),
                ));
            }
            "right" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(1.0),
                    CliCoord::Percent(0.5),
                ));
            }
            "top-left" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.0),
                    CliCoord::Percent(1.0),
                ));
            }
            "top-right" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(1.0),
                    CliCoord::Percent(1.0),
                ));
            }
            "bottom-left" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(0.0),
                    CliCoord::Percent(0.0),
                ));
            }
            "bottom-right" => {
                return Ok(CliPosition::new(
                    CliCoord::Percent(1.0),
                    CliCoord::Percent(0.0),
                ));
            }
            _ => return Err(format!("Invalid position keyword: {raw}")),
        }
    }

let x = coords[0];
    let y = coords[1];

let parsed_x = match x.parse::<u32>() {
        Ok(x) => CliCoord::Pixel(x as f32),
        Err(_) => match x.parse::<f32>() {
            Ok(x) => CliCoord::Percent(x),
            Err(_) => return Err(format!("Invalid x coord: {x}")),
        },
    };

let parsed_y = match y.parse::<u32>() {
        Ok(y) => CliCoord::Pixel(y as f32),
        Err(_) => match y.parse::<f32>() {
            Ok(y) => CliCoord::Percent(y),
            Err(_) => return Err(format!("Invalid y coord: {y}")),
        },
    };

Ok(CliPosition::new(parsed_x, parsed_y))
}

#[cfg(test)]
mod tests {
    use super::*;

#[test]
    fn should_reject_wrong_colors() {
        assert!(
            from_hex("0012231").is_err(),
            "function is accepting strings with more than 6 chars"
        );
        assert!(
            from_hex("00122").is_err(),
            "function is accepting strings with less than 6 chars"
        );
        assert!(
            from_hex("00r223").is_err(),
            "function is accepting strings with chars that aren't hex"
        );
    }

#[test]
    fn should_convert_colors_from_hex() {
        let color = from_hex("101010").unwrap();
        assert_eq!(color, [16, 16, 16]);

let color = from_hex("ffffff").unwrap();
        assert_eq!(color, [255, 255, 255]);

use utils::{
    compression::{BitPack, Compressor},
    ipc::{self, ArchivedPixelFormat, Coord, Position},
};

use crate::cli::ResizeStrategy;

use super::cli;

#[derive(Clone)]
pub struct ImgBuf {
    bytes: Box<[u8]>,
    format: ImageFormat,
    is_animated: bool,
}

impl ImgBuf {
    /// Create a new ImgBuf from a given path. Use - for Stdin
    pub fn new(path: &Path) -> Result<Self, String> {
        let bytes = if let Some("-") = path.to_str() {
            let mut bytes = Vec::new();
            stdin()
                .read_to_end(&mut bytes)
                .map_err(|e| format!("failed to read standard input: {e}"))?;
            bytes.into_boxed_slice()
        } else {
            std::fs::read(path)
                .map_err(|e| format!("failed to read file: {e}"))?
                .into_boxed_slice()
        };

let reader = image::io::Reader::new(Cursor::new(&bytes))
            .with_guessed_format()
            .map_err(|e| format!("failed to detect the image's format: {e}"))?;

let format = reader.format();
        let is_animated = match format {
            Some(ImageFormat::Gif) => true,
            Some(ImageFormat::WebP) => {
                // Note: unwrapping is safe because we already opened the file once before this
                WebPDecoder::new(Cursor::new(&bytes))
                    .map_err(|e| format!("failed to decode Webp Image: {e}"))?
                    .has_animation()
            }
            Some(ImageFormat::Png) => PngDecoder::new(Cursor::new(&bytes))
                .map_err(|e| format!("failed to decode Png Image: {e}"))?
                .is_apng()
                .map_err(|e| format!("failed to detect if Png is animated: {e}"))?,
            None => return Err("Unknown image format".to_string()),
            _ => false,
        };

Ok(Self {
            format: format.unwrap(), // this is ok because we return err earlier if it is None
            bytes,
            is_animated,
        })
    }

#[inline]
    pub fn is_animated(&self) -> bool {
        self.is_animated
    }

/// Decode the ImgBuf into am RgbImage
    pub fn decode(&self) -> Result<RgbImage, String> {
        let mut reader = image::io::Reader::new(Cursor::new(&self.bytes));
        reader.set_format(self.format);
        Ok(reader
            .decode()
            .map_err(|e| format!("failed to decode image: {e}"))?
            .into_rgb8())
    }

/// Convert this ImgBuf into Frames
    pub fn as_frames(&self) -> Result<Frames, String> {
        match self.format {
            ImageFormat::Gif => Ok(GifDecoder::new(Cursor::new(&self.bytes))
                .map_err(|e| format!("failed to decode gif during animation: {e}"))?
                .into_frames()),
            ImageFormat::WebP => Ok(WebPDecoder::new(Cursor::new(&self.bytes))
                .map_err(|e| format!("failed to decode webp during animation: {e}"))?
                .into_frames()),
            ImageFormat::Png => Ok(PngDecoder::new(Cursor::new(&self.bytes))
                .map_err(|e| format!("failed to decode png during animation: {e}"))?
                .apng()
                .unwrap() // we detected this earlier
                .into_frames()),
            _ => Err(format!(
                "requested format has no decoder: {:#?}",
                self.format
            )),
        }
    }
}

#[inline]
pub fn frame_to_rgb(frame: image::Frame) -> RgbImage {
    DynamicImage::ImageRgba8(frame.into_buffer()).into_rgb8()
}

pub fn compress_frames(
    mut frames: Frames,
    dim: (u32, u32),
    format: ArchivedPixelFormat,
    filter: FilterType,
    resize: ResizeStrategy,
    color: &[u8; 3],
) -> Result<Vec<(BitPack, Duration)>, String> {
    let mut compressor = Compressor::new();
    let mut compressed_frames = Vec::new();

// The first frame should always exist
    let first = frames.next().unwrap().unwrap();
    let first_duration = first.delay().numer_denom_ms();
    let mut first_duration = Duration::from_millis((first_duration.0 / first_duration.1).into());
    let first_img = match resize {
        ResizeStrategy::No => img_pad(frame_to_rgb(first), dim, format, color)?,
        ResizeStrategy::Crop => img_resize_crop(frame_to_rgb(first), dim, format, filter)?,
        ResizeStrategy::Fit => img_resize_fit(frame_to_rgb(first), dim, format, filter, color)?,
    };

let mut canvas: Option<Vec<u8>> = None;
    while let Some(Ok(frame)) = frames.next() {
        let (dur_num, dur_div) = frame.delay().numer_denom_ms();
        let duration = Duration::from_millis((dur_num / dur_div).into());

let img = match resize {
            ResizeStrategy::No => img_pad(frame_to_rgb(frame), dim, format, color)?,
            ResizeStrategy::Crop => img_resize_crop(frame_to_rgb(frame), dim, format, filter)?,
            ResizeStrategy::Fit => img_resize_fit(frame_to_rgb(frame), dim, format, filter, color)?,
        };

if let Some(canvas) = canvas.as_ref() {
            match compressor.compress(canvas, &img, format) {
                Some(bytes) => compressed_frames.push((bytes, duration)),
                None => match compressed_frames.last_mut() {
                    Some(last) => last.1 += duration,
                    None => first_duration += duration,
                },
            }
        } else {
            match compressor.compress(&first_img, &img, format) {
                Some(bytes) => compressed_frames.push((bytes, duration)),
                None => first_duration += duration,
            }
        }
        canvas = Some(img);
    }

//Add the first frame we got earlier:
    if let Some(canvas) = canvas.as_ref() {
        match compressor.compress(canvas, &first_img, format) {
            Some(bytes) => compressed_frames.push((bytes, first_duration)),
            None => match compressed_frames.last_mut() {
                Some(last) => last.1 += first_duration,
                None => first_duration += first_duration,
            },
        }
    }

Ok(compressed_frames)
}

pub fn make_filter(filter: &cli::Filter) -> fast_image_resize::FilterType {
    match filter {
        cli::Filter::Nearest => fast_image_resize::FilterType::Box,
        cli::Filter::Bilinear => fast_image_resize::FilterType::Bilinear,
        cli::Filter::CatmullRom => fast_image_resize::FilterType::CatmullRom,
        cli::Filter::Mitchell => fast_image_resize::FilterType::Mitchell,
        cli::Filter::Lanczos3 => fast_image_resize::FilterType::Lanczos3,
    }
}

pub fn img_pad(
    mut img: RgbImage,
    dimensions: (u32, u32),
    format: ArchivedPixelFormat,
    color: &[u8; 3],
) -> Result<Vec<u8>, String> {
    let mut color = color.to_owned();
    if format.must_swap_r_and_b_channels() {
        color.swap(0, 2);
    }
    let (padded_w, padded_h) = dimensions;
    let (padded_w, padded_h) = (padded_w as usize, padded_h as usize);
    let mut padded = Vec::with_capacity(padded_h * padded_w * 3);

for _ in 0..(((padded_h - img_h) / 2) * padded_w) {
        padded.extend(color);
    }

// Calculate left and right border widths. `u32::div` rounds toward 0, so, if `img_w` is odd,
    // add an extra pixel to the right border to ensure the row is the correct width.
    let left_border_w = (padded_w - img_w) / 2;
    let right_border_w = left_border_w + (img_w % 2);

for row in 0..img_h {
        for _ in 0..left_border_w {
            padded.extend(color);
        }

for pixel in raw_img[(row * img_w * 3)..((row + 1) * img_w * 3)].chunks_exact(3) {
            if format.must_swap_r_and_b_channels() {
                padded.extend(pixel.iter().rev());
            } else {
                padded.extend(pixel);
            }
        }
        for _ in 0..right_border_w {
            padded.extend(color);
        }
    }

while padded.len() < (padded_h * padded_w * 3) {
        padded.extend(color);
    }

Ok(padded)
}

/// Convert an RGB &[u8] to BRG in-place by swapping bytes
#[inline]
fn rgb_to_brg(rgb: &mut [u8]) {
    for pixel in rgb.chunks_exact_mut(3) {
        pixel.swap(0, 2);
    }
}

/// Resize an image to fit within the given dimensions, covering as much space as possible without
/// cropping.
pub fn img_resize_fit(
    img: RgbImage,
    dimensions: (u32, u32),
    format: ArchivedPixelFormat,
    filter: FilterType,
    padding_color: &[u8; 3],
) -> Result<Vec<u8>, String> {
    let (width, height) = dimensions;
    let (img_w, img_h) = img.dimensions();
    if (img_w, img_h) != (width, height) {
        // if our image is already scaled to fit, skip resizing it and just pad it directly
        if img_w == width || img_h == height {
            return img_pad(img, dimensions, format, padding_color);
        }

let ratio = width as f32 / height as f32;
        let img_r = img_w as f32 / img_h as f32;

let (trg_w, trg_h) = if ratio > img_r {
            let scale = height as f32 / img_h as f32;
            ((img_w as f32 * scale) as u32, height)
        } else {
            let scale = width as f32 / img_w as f32;
            (width, (img_h as f32 * scale) as u32)
        };

let src = match fast_image_resize::Image::from_vec_u8(
            // We unwrap below because we know the images's dimensions should never be 0
            NonZeroU32::new(img_w).unwrap(),
            NonZeroU32::new(img_h).unwrap(),
            img.into_raw(),
            PixelType::U8x3,
        ) {
            Ok(i) => i,
            Err(e) => return Err(e.to_string()),
        };

// We unwrap below because we know the outputs's dimensions should never be 0
        let new_w = NonZeroU32::new(trg_w).unwrap();
        let new_h = NonZeroU32::new(trg_h).unwrap();

let mut dst = fast_image_resize::Image::new(new_w, new_h, PixelType::U8x3);
        let mut dst_view = dst.view_mut();

let mut resizer = Resizer::new(fast_image_resize::ResizeAlg::Convolution(filter));
        if let Err(e) = resizer.resize(&src.view(), &mut dst_view) {
            return Err(e.to_string());
        }

img_pad(
            image::RgbImage::from_raw(trg_w, trg_h, dst.into_vec()).unwrap(),
            dimensions,
            format,
            padding_color,
        )
    } else {
        let mut res = img.into_vec();
        if format.must_swap_r_and_b_channels() {
            rgb_to_brg(&mut res);
        }
        Ok(res)
    }
}

pub fn img_resize_crop(
    img: RgbImage,
    dimensions: (u32, u32),
    format: ArchivedPixelFormat,
    filter: FilterType,
) -> Result<Vec<u8>, String> {
    let (width, height) = dimensions;
    let (img_w, img_h) = img.dimensions();
    let mut resized_img = if (img_w, img_h) != (width, height) {
        let src = match fast_image_resize::Image::from_vec_u8(
            // We unwrap below because we know the images's dimensions should never be 0
            NonZeroU32::new(img_w).unwrap(),
            NonZeroU32::new(img_h).unwrap(),
            img.into_raw(),
            PixelType::U8x3,
        ) {
            Ok(i) => i,
            Err(e) => return Err(e.to_string()),
        };

// We unwrap below because we know the outputs's dimensions should never be 0
        let new_w = NonZeroU32::new(width).unwrap();
        let new_h = NonZeroU32::new(height).unwrap();
        let mut src_view = src.view();
        src_view.set_crop_box_to_fit_dst_size(new_w, new_h, Some((0.5, 0.5)));

let mut dst = fast_image_resize::Image::new(new_w, new_h, PixelType::U8x3);
        let mut dst_view = dst.view_mut();

let mut resizer = Resizer::new(fast_image_resize::ResizeAlg::Convolution(filter));
        if let Err(e) = resizer.resize(&src_view, &mut dst_view) {
            return Err(e.to_string());
        }

dst.into_vec()
    } else {
        img.into_vec()
    };

if format.must_swap_r_and_b_channels() {
        rgb_to_brg(&mut resized_img);
    }

Ok(resized_img)
}

pub fn make_transition(img: &cli::Img) -> ipc::Transition {
    let mut angle = img.transition_angle;
    let mut step = img.transition_step;

let x = match img.transition_pos.x {
        cli::CliCoord::Percent(x) => {
            if !(0.0..=1.0).contains(&x) {
                println!(
                    "Warning: x value not in range [0,1] position might be set outside screen: {x}"
                );
            }
            Coord::Percent(x)
        }
        cli::CliCoord::Pixel(x) => Coord::Pixel(x),
    };

let y = match img.transition_pos.y {
        cli::CliCoord::Percent(y) => {
            if !(0.0..=1.0).contains(&y) {
                println!(
                    "Warning: y value not in range [0,1] position might be set outside screen: {y}"
                );
            }
            Coord::Percent(y)
        }
        cli::CliCoord::Pixel(y) => Coord::Pixel(y),
    };

let mut pos = Position::new(x, y);

ipc::Transition {
        duration: img.transition_duration,
        step,
        fps: img.transition_fps,
        bezier: img.transition_bezier,
        angle,
        pos,
        transition_type,
        wave: img.transition_wave,
        invert_y: img.invert_y,
    }
}
0707010000002F000081A400000000000000000000000165FE275300003DA4000000000000000000000000000000000000001700000000swww-0.9.1/src/main.rsuse clap::Parser;
use std::{os::unix::net::UnixStream, path::PathBuf, process::Stdio, time::Duration};

use utils::{
    cache,
    ipc::{
        self, get_socket_path, read_socket, AnimationRequest, Answer, ArchivedAnswer,
        ArchivedPixelFormat, Request,
    },
};

mod imgproc;
use imgproc::*;

mod cli;
use cli::{ResizeStrategy, Swww};

fn main() -> Result<(), String> {
    let swww = Swww::parse();
    if let Swww::Init {
        no_daemon, format, ..
    } = &swww
    {
        eprintln!(
            "DEPRECATION WARNING: `swww init` IS DEPRECATED. Call `swww-daemon` directly instead"
        );
        match is_daemon_running() {
            Ok(false) => {
                let socket_path = get_socket_path();
                if socket_path.exists() {
                    eprintln!(
                        "WARNING: socket file {} was not deleted when the previous daemon exited",
                        socket_path.to_string_lossy()
                    );
                    if let Err(e) = std::fs::remove_file(socket_path) {
                        return Err(format!("failed to delete previous socket: {e}"));
                    }
                }
            }
            Ok(true) => {
                return Err("There seems to already be another instance running...".to_string())
            }
            Err(e) => {
                eprintln!("WARNING: failed to read '/proc' directory to determine whether the daemon is running: {e}
                          Falling back to trying to checking if the socket file exists...");
                let socket_path = get_socket_path();
                if socket_path.exists() {
                    return Err(format!(
                        "Found socket at {}. There seems to be an instance already running...",
                        socket_path.to_string_lossy()
                    ));
                }
            }
        }
        spawn_daemon(*no_daemon, format)?;
        if *no_daemon {
            return Ok(());
        }
    }

if let Swww::ClearCache = &swww {
        return cache::clean();
    }

let mut configured = false;
    while !configured {
        let socket = connect_to_socket(5, 100)?;
        Request::Ping.send(&socket)?;
        let bytes = read_socket(&socket)?;
        let answer = Answer::receive(&bytes);
        if let ArchivedAnswer::Ping(c) = answer {
            configured = *c;
        } else {
            return Err("Daemon did not return Answer::Ping, as expected".to_string());
        }
        std::thread::sleep(Duration::from_millis(1));
    }

process_swww_args(&swww)?;

Ok(())
}

fn process_swww_args(args: &Swww) -> Result<(), String> {
    let request = match make_request(args)? {
        Some(request) => request,
        None => return Ok(()),
    };
    let socket = connect_to_socket(5, 100)?;
    request.send(&socket)?;
    let bytes = read_socket(&socket)?;
    drop(socket);
    match Answer::receive(&bytes) {
        ArchivedAnswer::Err(msg) => return Err(msg.to_string()),
        ArchivedAnswer::Info(info) => info.iter().for_each(|i| println!("{}", i)),
        ArchivedAnswer::Ok => {
            if let Swww::Kill = args {
                #[cfg(debug_assertions)]
                let tries = 20;
                #[cfg(not(debug_assertions))]
                let tries = 10;
                let socket_path = get_socket_path();
                for _ in 0..tries {
                    if !socket_path.exists() {
                        return Ok(());
                    }
                    std::thread::sleep(Duration::from_millis(100));
                }
                return Err(format!(
                    "Could not confirm socket deletion at: {socket_path:?}"
                ));
            }
        }
        ArchivedAnswer::Ping(_) => {
            return Ok(());
        }
    }
    Ok(())
}

fn make_request(args: &Swww) -> Result<Option<Request>, String> {
    match args {
        Swww::Clear(c) => Ok(Some(Request::Clear(ipc::Clear {
            color: c.color,
            outputs: split_cmdline_outputs(&c.outputs),
        }))),
        Swww::Restore(restore) => {
            let requested_outputs = split_cmdline_outputs(&restore.outputs);
            restore_from_cache(&requested_outputs)?;
            Ok(None)
        }
        Swww::ClearCache => unreachable!("there is no request for clear-cache"),
        Swww::Img(img) => {
            let requested_outputs = split_cmdline_outputs(&img.outputs);
            let (format, dims, outputs) = get_format_dims_and_outputs(&requested_outputs)?;
            let imgbuf = ImgBuf::new(&img.path)?;
            if imgbuf.is_animated() {
                let animations = {
                    let first_frame = imgbuf
                        .decode()
                        .map_err(|e| format!("unable to decode first frame: {e}"))?;

let img_request = make_img_request(img, first_frame, format, &dims, &outputs)?;
                    let animations = make_animation_request(img, &imgbuf, &dims, format, &outputs);

Ok(Some(Request::Animation(animations)))
            } else {
                let img_raw = imgbuf.decode()?;
                Ok(Some(Request::Img(make_img_request(
                    img, img_raw, format, &dims, &outputs,
                )?)))
            }
        }
        Swww::Init { no_cache, .. } => {
            if !*no_cache {
                restore_from_cache(&[])?;
            }
            Ok(None)
        }
        Swww::Kill => Ok(Some(Request::Kill)),
        Swww::Query => Ok(Some(Request::Query)),
    }
}

fn make_img_request(
    img: &cli::Img,
    img_raw: image::RgbImage,
    pixel_format: ArchivedPixelFormat,
    dims: &[(u32, u32)],
    outputs: &[Vec<String>],
) -> Result<ipc::ImageRequest, String> {
    let transition = make_transition(img);
    let mut unique_requests = Vec::with_capacity(dims.len());
    for (dim, outputs) in dims.iter().zip(outputs) {
        let path = match img.path.canonicalize() {
            Ok(p) => p.to_string_lossy().to_string(),
            Err(e) => {
                if let Some("-") = img.path.to_str() {
                    "STDIN".to_string()
                } else {
                    return Err(format!("failed no canonicalize image path: {e}"));
                }
            }
        };

let img = match img.resize {
            ResizeStrategy::No => img_pad(img_raw.clone(), *dim, pixel_format, &img.fill_color)?,
            ResizeStrategy::Crop => img_resize_crop(
                img_raw.clone(),
                *dim,
                pixel_format,
                make_filter(&img.filter),
            )?,
            ResizeStrategy::Fit => img_resize_fit(
                img_raw.clone(),
                *dim,
                pixel_format,
                make_filter(&img.filter),
                &img.fill_color,
            )?,
        }
        .into_boxed_slice();

unique_requests.push((
            ipc::Img { img, path },
            outputs.to_owned().into_boxed_slice(),
        ));
    }

Ok((transition, unique_requests.into_boxed_slice()))
}

#[allow(clippy::type_complexity)]
fn get_format_dims_and_outputs(
    requested_outputs: &[String],
) -> Result<(ArchivedPixelFormat, Vec<(u32, u32)>, Vec<Vec<String>>), String> {
    let mut outputs: Vec<Vec<String>> = Vec::new();
    let mut dims: Vec<(u32, u32)> = Vec::new();
    let mut imgs: Vec<ipc::BgImg> = Vec::new();

fn make_animation_request(
    img: &cli::Img,
    imgbuf: &ImgBuf,
    dims: &[(u32, u32)],
    pixel_format: ArchivedPixelFormat,
    outputs: &[Vec<String>],
) -> Result<AnimationRequest, String> {
    let filter = make_filter(&img.filter);
    let mut animations = Vec::with_capacity(dims.len());
    for (dim, outputs) in dims.iter().zip(outputs) {
        // do not load cache if we are reading from stdin
        if let Some("-") = img.path.to_str() {
            //TODO: make cache work for all resize strategies
            if img.resize == ResizeStrategy::Crop {
                match cache::load_animation_frames(&img.path, *dim, pixel_format.de()) {
                    Ok(Some(animation)) => {
                        animations.push((animation, outputs.to_owned().into_boxed_slice()));
                        continue;
                    }
                    Ok(None) => (),
                    Err(e) => eprintln!("Error loading cache for {:?}: {e}", img.path),
                }
            }
        }

let animation = ipc::Animation {
            path: img.path.to_string_lossy().to_string(),
            dimensions: *dim,
            animation: compress_frames(
                imgbuf.as_frames()?,
                *dim,
                pixel_format,
                filter,
                img.resize,
                &img.fill_color,
            )?
            .into_boxed_slice(),
            pixel_format: pixel_format.de(),
        };
        animations.push((animation, outputs.to_owned().into_boxed_slice()));
    }
    Ok(animations.into_boxed_slice())
}

fn split_cmdline_outputs(outputs: &str) -> Box<[String]> {
    outputs
        .split(',')
        .map(|s| s.to_owned())
        .filter(|s| !s.is_empty())
        .collect()
}

fn spawn_daemon(no_daemon: bool, format: &Option<cli::PixelFormat>) -> Result<(), String> {
    let mut cmd = std::process::Command::new("swww-daemon");

if let Some(format) = format {
        cmd.arg("--format");
        cmd.arg(match format {
            cli::PixelFormat::Xrgb => "xrgb",
            cli::PixelFormat::Xbgr => "xbgr",
            cli::PixelFormat::Rgb => "rgb",
            cli::PixelFormat::Bgr => "bgr",
        });
    }

if no_daemon {
        match cmd.status() {
            Ok(_) => Ok(()),
            Err(e) => Err(format!("error spawning swww-daemon: {e}")),
        }
    } else {
        match cmd.stdout(Stdio::null()).stderr(Stdio::null()).spawn() {
            Ok(_) => Ok(()),
            Err(e) => Err(format!("error spawning swww-daemon: {e}")),
        }
    }
}

/// We make sure the Stream is always set to blocking mode
///
/// * `tries` -  how many times to attempt the connection
/// * `interval` - how long to wait between attempts, in milliseconds
fn connect_to_socket(tries: u8, interval: u64) -> Result<UnixStream, String> {
    //Make sure we try at least once
    let tries = if tries == 0 { 1 } else { tries };
    let path = get_socket_path();
    let mut error = None;
    for _ in 0..tries {
        match UnixStream::connect(&path) {
            Ok(socket) => {
                if let Err(e) = socket.set_nonblocking(false) {
                    return Err(format!("Failed to set blocking connection: {e}"));
                }
                #[cfg(debug_assertions)]
                let timeout = Duration::from_secs(30); //Some operations take a while to respond in debug mode
                #[cfg(not(debug_assertions))]
                let timeout = Duration::from_secs(5);

if let Err(e) = socket.set_read_timeout(Some(timeout)) {
                    return Err(format!("failed to set read timeout for socket: {e}"));
                }

return Ok(socket);
            }
            Err(e) => error = Some(e),
        }
        std::thread::sleep(Duration::from_millis(interval));
    }
    let error = error.unwrap();
    if error.kind() == std::io::ErrorKind::NotFound {
        return Err("Socket file not found. Are you sure swww-daemon is running?".to_string());
    }

Err(format!("Failed to connect to socket: {error}"))
}

fn is_daemon_running() -> Result<bool, String> {
    let proc = PathBuf::from("/proc");

let entries = match proc.read_dir() {
        Ok(e) => e,
        Err(e) => return Err(e.to_string()),
    };

for entry in entries.flatten() {
        let dirname = entry.file_name();
        if let Ok(pid) = dirname.to_string_lossy().parse::<u32>() {
            if std::process::id() == pid {
                continue;
            }
            let mut entry_path = entry.path();
            entry_path.push("cmdline");
            if let Ok(cmd) = std::fs::read_to_string(entry_path) {
                let mut args = cmd.split(&[' ', '\0']);
                if let Some(arg0) = args.next() {
                    if arg0.ends_with("swww-daemon") {
                        return Ok(true);
                    }
                }
            }
        }
    }

Ok(false)
}

fn restore_from_cache(requested_outputs: &[String]) -> Result<(), String> {
    let (_, _, outputs) = get_format_dims_and_outputs(requested_outputs)?;

for output in outputs.iter().flatten() {
        let img_path = utils::cache::get_previous_image_path(output)?;
        #[allow(deprecated)]
        if let Err(e) = process_swww_args(&Swww::Img(cli::Img {
            path: PathBuf::from(img_path),
            outputs: output.to_string(),
            no_resize: false,
            resize: ResizeStrategy::Crop,
            fill_color: [0, 0, 0],
            filter: cli::Filter::Lanczos3,
            transition_type: cli::TransitionType::None,
            transition_step: u8::MAX,
            transition_duration: 0.0,
            transition_fps: 30,
            transition_angle: 0.0,
            transition_pos: cli::CliPosition {
                x: cli::CliCoord::Pixel(0.0),
                y: cli::CliCoord::Pixel(0.0),
            },
            invert_y: false,
            transition_bezier: (0.0, 0.0, 0.0, 0.0),
            transition_wave: (0.0, 0.0),
        })) {
            eprintln!("WARNING: failed to load cache for output {output}: {e}");
        }
    }

Ok(())
}
07070100000030000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001100000000swww-0.9.1/tests07070100000031000081A400000000000000000000000165FE27530000136A000000000000000000000000000000000000002000000000swww-0.9.1/tests/integration.rs//! These are relatively simple tests just to make sure no basic functionally
//! was broken by anything. They are no substitute to actually trying to run
//! the program yourself and seeing if anything broke (e.g. maybe images stopped
//! rendering correctly, somehow, without the program breaking down)

use assert_cmd::Command;
use std::path::PathBuf;

const TEST_IMG_DIR: &str = "test_images";
const TEST_IMGS: [&str; 3] = [
    "test_images/test1.jpg",
    "test_images/test2.png",
    "test_images/test3.bmp",
];

fn make_img_dir() {
    let p = PathBuf::from(TEST_IMG_DIR);
    if !p.is_dir() {
        std::fs::create_dir(p)
            .expect("Failed to create directory to put the images used for testing: ");
    }
}

fn make_test_imgs() {
    make_img_dir();
    for (i, test_img) in TEST_IMGS.iter().enumerate() {
        let p = PathBuf::from(test_img);
        if !p.is_file() {
            //We use i to create images of different dimensions, just to be more through
            let mut imgbuf = image::ImageBuffer::new(400 * (i as u32 + 1), 400 * (i as u32 + 1));

//This is taken straight from the image crate fractal example
            for (x, y, pixel) in imgbuf.enumerate_pixels_mut() {
                let r = (0.3 * x as f32) as u8;
                let b = (0.3 * y as f32) as u8;
                *pixel = image::Rgb([r, 0, b]);
            }

imgbuf
                .save(test_img)
                .expect("Failed to create image for testing: ");
        }
    }
}

fn cmd() -> Command {
    Command::cargo_bin("swww").unwrap()
}

fn start_daemon() -> Command {
    Command::cargo_bin("swww-daemon").unwrap()
}

#[test]
#[ignore]
fn general_commands() {
    make_test_imgs();

init_daemon();
    init_daemon_twice();
    sending_imgs();
    sending_img_that_does_not_exist();
    sending_imgs_with_filter();
    sending_img_with_filter_that_does_not_exist();
    sending_img_from_stdin();
    let output = query_outputs();
    sending_img_to_individual_monitors(&output);
    sending_img_to_monitor_that_does_not_exist();
    sending_img_with_custom_transition();
    clear_outputs();
    killing_daemon();
    cmd().arg("query").assert().failure(); //daemon is dead, so this should fail
}

fn sending_imgs() {
    for img in TEST_IMGS {
        cmd().arg("img").arg(img).assert().success();
    }
}

fn init_daemon() {
    std::thread::spawn(|| {
        start_daemon().assert().success();
    });
    // sleep for a bit to allow the daemon to init correctly
    // note that even though this is a race-condition, in the actual program we
    // have implemented some proper syncronization. And, in here, it is *very*
    // unlikely that this will ever be a problem, (and, if it is, it is not a
    // very big deal, it will merely cause init_daemon_twice to false-fail)
    std::thread::sleep(std::time::Duration::from_millis(100));
}

/// Should fail since we already have an instance running
fn init_daemon_twice() {
    start_daemon().assert().failure();
}

fn sending_img_that_does_not_exist() {
    cmd().arg("img").arg("I don't exist").assert().failure();
}

fn query_outputs() -> String {
    let output = cmd().arg("query").output().expect("Query failed!");
    let stdout = String::from_utf8(output.stdout).unwrap();
    stdout.split_once(':').unwrap().0.to_string()
}

fn sending_img_to_individual_monitors(output: &str) {
    cmd()
        .arg("img")
        .arg("-t")
        .arg("none")
        .arg(TEST_IMGS[0])
        .arg("-o")
        .arg(output)
        .assert()
        .success();
}

fn sending_img_to_monitor_that_does_not_exist() {
    cmd()
        .arg("img")
        .arg("-t")
        .arg("none")
        .arg(TEST_IMGS[0])
        .arg("-o")
        .arg("AHOY")
        .assert()
        .failure();
}

fn sending_imgs_with_filter() {
    for filter in ["Nearest", "Bilinear", "CatmullRom", "Mitchell", "Lanczos3"] {
        cmd()
            .arg("img")
            .arg("-t")
            .arg("none")
            .arg(TEST_IMGS[0])
            .arg("-f")
            .arg(filter)
            .assert()
            .success();
    }
}

fn sending_img_from_stdin() {
    cmd()
        .arg("img")
        .arg("-t")
        .arg("none")
        .arg("-")
        .pipe_stdin("test_images/test1.jpg")
        .expect("failed to pipe stdin")
        .assert()
        .success();
}

fn sending_img_with_filter_that_does_not_exist() {
    cmd()
        .arg("img")
        .arg("-t")
        .arg("none")
        .arg(TEST_IMGS[0])
        .arg("-f")
        .arg("AHOY")
        .assert()
        .failure();
}

fn sending_img_with_custom_transition() {
    cmd()
        .arg("img")
        .arg("-t")
        .arg("none")
        .arg(TEST_IMGS[0])
        .arg("--transition-step")
        .arg("200")
        .assert()
        .success();
}

fn clear_outputs() {
    cmd().arg("clear").assert().success();
}

fn killing_daemon() {
    cmd().arg("kill").assert().success();
}
07070100000032000081A400000000000000000000000165FE27530000060D000000000000000000000000000000000000002000000000swww-0.9.1/tests/spell_check.rsuse std::process::Command;

/// We ignore because people might not have codespell installed, and I don't want to force anyone to
/// install codespell to e.g. run tests before installing swww. This may change in the future
#[test]
#[ignore]
fn spell_check_code_and_man_pages() {
    // Make sure no docs were generated
    let _ = std::fs::remove_dir_all("doc/generated");
    match Command::new("codespell")
        .args([
            "--enable-colors",
            "--ignore-words-list",
            "crate,statics",
            "--skip",
            "doc/generated",   // skip the generated documentation
            "src",             // client
            "daemon/src",      // daemon
            "utils/src",       // common code
            "doc",             // man pages
            "example_scripts", // scripts
            "CHANGELOG.md",
            "README.md",
        ])
        .output()
    {
        Ok(output) => {
            if !output.status.success() {
                panic!(
                    "\nstdout:{}\nstderr:{}\n",
                    String::from_utf8_lossy(&output.stdout),
                    String::from_utf8_lossy(&output.stderr)
                );
            }
        }
        Err(e) => match e.kind() {
            std::io::ErrorKind::NotFound => {
                eprintln!(
                    "'codespell' not found. Please install in order to do spell checking:
                          `pip install codespell`"
                );
            }
            _ => eprintln!("{e}"),
        },
    }
}
07070100000033000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001100000000swww-0.9.1/utils07070100000034000081A400000000000000000000000165FE275300000142000000000000000000000000000000000000001C00000000swww-0.9.1/utils/Cargo.toml[package]
name = "utils"
version = "0.9.1"
authors = ["Leonardo Gibrowski Faé <leonardo.fae44@gmail.com>"]
edition = "2021"
license-file = "../LICENSE"

[dependencies]
rkyv = "0.7"

[build-dependencies]
pkg-config = "0.3"

[dev-dependencies]
rand = "0.8"
criterion = "0.5"

[[bench]]
name = "compression"
harness = false
07070100000035000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001900000000swww-0.9.1/utils/benches07070100000036000081A400000000000000000000000165FE2753000007DF000000000000000000000000000000000000002800000000swww-0.9.1/utils/benches/compression.rsuse criterion::{black_box, criterion_group, criterion_main, Criterion};
use utils::compression::{Compressor, Decompressor};

fn generate_data() -> (Box<[u8]>, Box<[u8]>) {
    let v1 = vec![120; 1920 * 1080 * 3];
    let mut v2 = v1.clone();

const REGIONS: usize = 2000;
    let diff_bytes: usize = v2.len() / (REGIONS + 1);
    // Make different regions
    for i in 0..REGIONS {
        // With 100 different bytes total
        for j in 0..10 {
            v2[i * diff_bytes + j] = 100;
        }
        for j in 10..30 {
            v2[i * diff_bytes + j] = 200;
        }
        for j in 30..60 {
            v2[i * diff_bytes + j] = 20;
        }
        for j in 60..100 {
            v2[i * diff_bytes + j] = 30;
        }
    }

(v1.into_boxed_slice(), v2.into_boxed_slice())
}

fn buf_from(slice: &[u8]) -> Vec<u8> {
    let mut v = Vec::new();
    for pix in slice.chunks_exact(3) {
        v.extend_from_slice(pix);
        v.push(255);
    }
    v
}

pub fn compression_and_decompression(c: &mut Criterion) {
    let (prev, cur) = generate_data();

let mut compressor = Compressor::new();
    let mut comp = c.benchmark_group("compression");
    comp.bench_function("Full", |b| {
        b.iter(|| {
            black_box(
                compressor
                    .compress(&prev, &cur, utils::ipc::ArchivedPixelFormat::Xrgb)
                    .is_some(),
            )
        })
    });
    comp.finish();

let mut decomp = c.benchmark_group("decompression 4 channels");
    let bitpack = compressor
        .compress(&prev, &cur, utils::ipc::ArchivedPixelFormat::Xrgb)
        .unwrap();
    let mut canvas = buf_from(&prev);

let mut decompressor = Decompressor::new();
    decomp.bench_function("Full", |b| {
        b.iter(|| {
            black_box(decompressor.decompress(&bitpack, &mut canvas, utils::ipc::PixelFormat::Xrgb))
        })
    });

decomp.finish();
}

criterion_group!(compression, compression_and_decompression);
criterion_main!(compression);
07070100000037000081A400000000000000000000000165FE275300000078000000000000000000000000000000000000001A00000000swww-0.9.1/utils/build.rsfn main() {
    pkg_config::Config::new()
        .atleast_version("1.8")
        .probe("liblz4")
        .unwrap();
}
07070100000038000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000001500000000swww-0.9.1/utils/src07070100000039000081A400000000000000000000000165FE27530000199E000000000000000000000000000000000000001E00000000swww-0.9.1/utils/src/cache.rs//! Implements basic cache functionality.
//!
//! The idea is:
//!   1. the client registers the last image sent for each output in a file
//!   2. the daemon spawns a client that reloads that image when an output is created

use std::{
    fs::File,
    io::{BufReader, BufWriter, Read, Write},
    path::{Path, PathBuf},
};

use rkyv::{Deserialize, Infallible};

use crate::ipc::{Animation, PixelFormat};

pub fn store(output_name: &str, img_path: &str) -> Result<(), String> {
    let mut filepath = cache_dir()?;
    filepath.push(output_name);
    let file = File::create(filepath).map_err(|e| e.to_string())?;

let mut writer = BufWriter::new(file);
    writer
        .write_all(img_path.as_bytes())
        .map_err(|e| format!("failed to write cache: {e}"))
}

pub fn store_animation_frames(animation: &Animation) -> Result<(), String> {
    let filename = animation_filename(
        &PathBuf::from(&animation.path),
        animation.dimensions,
        animation.pixel_format,
    );
    let mut filepath = cache_dir()?;
    filepath.push(&filename);

let bytes = match rkyv::to_bytes::<_, 1024>(animation) {
        Ok(bytes) => bytes,
        Err(e) => return Err(format!("Failed to serialize request: {e}")),
    };

if !filepath.is_file() {
        let file = File::create(filepath).map_err(|e| e.to_string())?;

let mut writer = BufWriter::new(file);
        writer
            .write_all(&bytes)
            .map_err(|e| format!("failed to write cache: {e}"))
    } else {
        Ok(())
    }
}

pub fn load_animation_frames(
    path: &Path,
    dimensions: (u32, u32),
    pixel_format: PixelFormat,
) -> Result<Option<Animation>, String> {
    let filename = animation_filename(path, dimensions, pixel_format);
    let cache_dir = cache_dir()?;
    let mut filepath = cache_dir.clone();
    filepath.push(filename);

let read_dir = cache_dir
        .read_dir()
        .map_err(|e| format!("failed to read cache directory ({cache_dir:?}): {e}"))?;

for entry in read_dir.into_iter().flatten() {
        if entry.path() == filepath {
            let file = File::open(&filepath).map_err(|e| e.to_string())?;
            let mut buf_reader = BufReader::new(file);
            let mut buf = Vec::new();
            buf_reader
                .read_to_end(&mut buf)
                .map_err(|e| format!("failed to read file `{filepath:?}`: {e}"))?;

let frames = unsafe { rkyv::archived_root::<Animation>(&buf) };
            let frames: Animation = frames.deserialize(&mut Infallible).unwrap();

return Ok(Some(frames));
        }
    }
    Ok(None)
}

pub fn get_previous_image_path(output_name: &str) -> Result<String, String> {
    let mut filepath = cache_dir()?;
    clean_previous_verions(&filepath);

filepath.push(output_name);
    if !filepath.is_file() {
        return Ok("".to_string());
    }
    let file = std::fs::File::open(filepath).map_err(|e| format!("failed to open file: {e}"))?;
    let mut reader = BufReader::new(file);
    let mut buf = Vec::with_capacity(64);
    reader
        .read_to_end(&mut buf)
        .map_err(|e| format!("failed to read file: {e}"))?;

String::from_utf8(buf).map_err(|e| format!("failed to decode bytes: {e}"))
}

pub fn load(output_name: &str) -> Result<(), String> {
    let img_path = get_previous_image_path(output_name)?;
    if img_path.is_empty() {
        return Ok(());
    }

if let Ok(mut child) = std::process::Command::new("pidof").arg("swww").spawn() {
        if let Ok(status) = child.wait() {
            if status.success() {
                return Err("there is already another swww process running".to_string());
            }
        }
    }

match std::process::Command::new("swww")
        .arg("img")
        .args([
            &format!("--outputs={output_name}"),
            "--transition-type=none",
            &img_path,
        ])
        .spawn()
    {
        Ok(mut child) => match child.wait() {
            Ok(_) => Ok(()),
            Err(e) => Err(format!("child process failed: {e}")),
        },
        Err(e) => Err(format!("failed to spawn child process: {e}")),
    }
}

pub fn clean() -> Result<(), String> {
    std::fs::remove_dir_all(cache_dir()?)
        .map_err(|e| format!("failed to remove cache directory: {e}"))
}

fn clean_previous_verions(cache_dir: &Path) {
    let mut read_dir = match std::fs::read_dir(cache_dir) {
        Ok(read_dir) => read_dir,
        Err(_) => {
            eprintln!("WARNING: failed to read cache dir {:?} entries", cache_dir);
            return;
        }
    };

let current_version = env!("CARGO_PKG_VERSION");

while let Some(Ok(entry)) = read_dir.next() {
        let filename = entry.file_name();
        let filename = match filename.to_str() {
            Some(filename) => filename,
            None => {
                eprintln!("WARNING: failed to read filename of {:?}", filename);
                continue;
            }
        };

// only the images we've cached will have a _v token, indicating their version
        if let Some(i) = filename.rfind("_v") {
            if &filename[i + 2..] != current_version {
                if let Err(e) = std::fs::remove_file(entry.path()) {
                    eprintln!(
                        "WARNING: failed to remove cache file {} of old swww version {:?}",
                        filename, e
                    );
                }
            }
        }
    }
}

fn create_dir(p: &Path) -> Result<(), String> {
    if !p.is_dir() {
        if let Err(e) = std::fs::create_dir(p) {
            return Err(format!("failed to create directory({p:#?}): {e}"));
        }
    }
    Ok(())
}

fn cache_dir() -> Result<PathBuf, String> {
    if let Ok(path) = std::env::var("XDG_CACHE_HOME") {
        let mut path: PathBuf = path.into();
        path.push("swww");
        create_dir(&path)?;
        Ok(path)
    } else if let Ok(path) = std::env::var("HOME") {
        let mut path: PathBuf = path.into();
        path.push(".cache");
        path.push("swww");
        create_dir(&path)?;
        Ok(path)
    } else {
        Err("failed to read both $XDG_CACHE_HOME and $HOME environment variables".to_string())
    }
}

#[must_use]
fn animation_filename(path: &Path, dimensions: (u32, u32), pixel_format: PixelFormat) -> PathBuf {
    format!(
        "{}__{}x{}_{:?}_v{}",
        path.to_string_lossy().replace('/', "_"),
        dimensions.0,
        dimensions.1,
        pixel_format,
        env!("CARGO_PKG_VERSION"),
    )
    .into()
}
0707010000003A000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000002100000000swww-0.9.1/utils/src/compression0707010000003B000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000002600000000swww-0.9.1/utils/src/compression/comp0707010000003C000081A400000000000000000000000165FE2753000012E7000000000000000000000000000000000000002D00000000swww-0.9.1/utils/src/compression/comp/mod.rs//! # Compression Strategy
//!
//! We only compress RBG images, 8 bytes per channel; I don't think anyone will use
//! transparency for a background (nor if it even makes sense)
//!
//! For what's left, we store only the difference from the last frame to this one.
//! We do that as follows:
//! * First, we count how many pixels didn't change. We store that value as a u8.
//!   Every time the u8 hits the max (i.e. 255, or 0xFF), we push in onto the vector
//!   and restart the counting.
//! * Once we find a pixel that has changed, we count, starting from that one, how many
//!   changed, the same way we counted above (i.e. store as u8, every time it hits the
//!   max push and restart the counting)
//! * Then, we store all the new bytes.
//! * Start from the top until we are done with the image
//!
//! The default implementation lies in this file. Architecture-specific implementations
//! that make use of specialized instructions lie in other submodules.

#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
pub(super) mod sse2;

/// # Safety
///
/// s1.len() must be equal to s2.len()
#[inline(always)]
unsafe fn count_equals(s1: &[u8], s2: &[u8], mut i: usize) -> usize {
    let mut equals = 0;
    while i + 7 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 8 bytes left we read
        let a: u64 = unsafe { s1.as_ptr().add(i).cast::<u64>().read_unaligned() };
        let b: u64 = unsafe { s2.as_ptr().add(i).cast::<u64>().read_unaligned() };
        let cmp = a ^ b;
        if cmp != 0 {
            equals += cmp.trailing_zeros() as usize / 24;
            return equals;
        }
        equals += 2;
        i += 6;
    }

while i + 2 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 3 bytes left we read
        let a = unsafe { s1.get_unchecked(i..i + 3) };
        let b = unsafe { s2.get_unchecked(i..i + 3) };
        if a != b {
            break;
        }
        equals += 1;
        i += 3;
    }
    equals
}

/// # Safety
///
/// s1.len() must be equal to s2.len()
#[inline(always)]
unsafe fn count_different(s1: &[u8], s2: &[u8], mut i: usize) -> usize {
    let mut different = 0;
    while i + 2 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 3 bytes left we read
        let a = unsafe { s1.get_unchecked(i..i + 3) };
        let b = unsafe { s2.get_unchecked(i..i + 3) };
        if a == b {
            break;
        }
        different += 1;
        i += 3;
    }
    different
}

/// This calculates the difference between the current(cur) frame and the next(goal)
///
/// # Safety
///
/// cur.len() must be equal to goal.len()
#[inline(always)]
pub(super) unsafe fn pack_bytes(cur: &[u8], goal: &[u8], v: &mut Vec<u8>) {
    // use the most efficient implementation available:
    #[cfg(not(test))] // when testing, we want to use the specific implementation
    {
        #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
        if super::cpu::features::sse2() {
            return unsafe { sse2::pack_bytes(cur, goal, v) };
        }
    }

let mut i = 0;
    while i < cur.len() {
        // SAFETY: count_equals demands the same invariants as the current function
        let equals = unsafe { count_equals(cur, goal, i) };
        i += equals * 3;

if i >= cur.len() {
            break;
        }

let start = i;
        // SAFETY: count_different demands the same invariants as the current function
        let diffs = unsafe { count_different(cur, goal, i) };
        i += diffs * 3;

let j = v.len() + equals / 255;
        v.resize(1 + j + diffs / 255, 255);
        v[j] = (equals % 255) as u8;
        v.push((diffs % 255) as u8);

v.extend_from_slice(unsafe { goal.get_unchecked(start..i) });
        i += 3;
    }

if !v.is_empty() {
        // add two extra bytes to prevent access out of bounds later during decompression
        v.push(0);
        v.push(0);
    }
}

#[cfg(test)]
mod tests {
    // note the full compression -> decompression roundtrip is tested in super

use super::*;
    #[test]
    fn count_equal_test() {
        let a = [0u8; 102];
        assert_eq!(unsafe { count_equals(&a, &a, 0) }, 102 / 3);
        for i in [0, 10, 20, 30, 40, 50, 60, 70, 80, 90] {
            let mut b = a;
            b[i] = 1;
            assert_eq!(unsafe { count_equals(&a, &b, 0) }, i / 3, "i: {i}");
        }
    }

#[test]
    fn count_diffs_test() {
        let a = [0u8; 102];
        assert_eq!(unsafe { count_different(&a, &a, 0) }, 0,);
        for i in [10, 20, 30, 40, 50, 60, 70, 80, 90, 102] {
            let mut b = a;
            for x in &mut b[..i] {
                *x = 1;
            }
            assert_eq!(unsafe { count_different(&a, &b, 0) }, (i + 2) / 3, "i: {i}");
        }
    }
}
0707010000003D000081A400000000000000000000000165FE27530000212B000000000000000000000000000000000000002E00000000swww-0.9.1/utils/src/compression/comp/sse2.rs/// # Safety
///
/// s1.len() must be equal to s2.len()
#[inline]
#[target_feature(enable = "sse2")]
unsafe fn count_equals(s1: &[u8], s2: &[u8], mut i: usize) -> usize {
    use std::arch::x86_64 as intr;
    let mut equals = 0;
    while i + 15 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 16 bytes left we read
        let a = intr::_mm_loadu_si128(s1.as_ptr().add(i).cast());
        let b = intr::_mm_loadu_si128(s2.as_ptr().add(i).cast());
        let cmp = intr::_mm_cmpeq_epi8(a, b);
        let mask = intr::_mm_movemask_epi8(cmp);
        if mask != 0xFFFF {
            equals += mask.trailing_ones() as usize / 3;
            return equals;
        }
        equals += 5;
        i += 15;
    }

/// # Safety
///
/// s1.len() must be equal to s2.len()
#[inline]
#[target_feature(enable = "sse2")]
unsafe fn count_different(s1: &[u8], s2: &[u8], mut i: usize) -> usize {
    use std::arch::x86_64 as intr;
    let mut diff = 0;
    while i + 15 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 16 bytes left we read
        let a = intr::_mm_loadu_si128(s1.as_ptr().add(i).cast());
        let b = intr::_mm_loadu_si128(s2.as_ptr().add(i).cast());
        let cmp = intr::_mm_cmpeq_epi8(a, b);
        let mask = intr::_mm_movemask_epi8(cmp);
        // we only care about the case where all three bytes are equal
        let mask = (mask & (mask >> 1) & (mask >> 2)) & 0b001001001001001;
        if mask != 0 {
            let tz = mask.trailing_zeros() as usize;
            diff += (tz + 2) / 3;
            return diff;
        }
        diff += 5;
        i += 15;
    }

while i + 2 < s1.len() {
        // SAFETY: we exit the while loop when there are less than 3 bytes left we read
        let a = unsafe { s1.get_unchecked(i..i + 3) };
        let b = unsafe { s2.get_unchecked(i..i + 3) };
        if a == b {
            break;
        }
        diff += 1;
        i += 3;
    }
    diff
}

/// # Safety
///
/// s1.len() must be equal to s2.len()
#[inline]
#[target_feature(enable = "sse2")]
pub(super) unsafe fn pack_bytes(cur: &[u8], goal: &[u8], v: &mut Vec<u8>) {
    let mut i = 0;
    while i < cur.len() {
        // SAFETY: count_equals demands the same invariants as the current function
        let equals = unsafe { count_equals(cur, goal, i) };
        i += equals * 3;

if i >= cur.len() {
            break;
        }

let start = i;
        // SAFETY: count_equals demands the same invariants as the current function
        let diffs = unsafe { count_different(cur, goal, i) };
        i += diffs * 3;

let j = v.len() + equals / 255;
        v.resize(1 + j + diffs / 255, 255);
        v[j] = (equals % 255) as u8;
        v.push((diffs % 255) as u8);

v.extend_from_slice(unsafe { goal.get_unchecked(start..i) });
        i += 3;
    }

if !v.is_empty() {
        // add two extra bytes to prevent access out of bounds later during decompression
        v.push(0);
        v.push(0);
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::compression::unpack_bytes_4channels;
    use rand::prelude::random;

#[test]
    fn count_equal_test() {
        let a = [0u8; 102];
        assert_eq!(unsafe { count_equals(&a, &a, 0) }, 102 / 3);
        for i in [0, 10, 20, 30, 40, 50, 60, 70, 80, 90] {
            let mut b = a;
            b[i] = 1;
            assert_eq!(unsafe { count_equals(&a, &b, 0) }, i / 3, "i: {i}");
        }
    }

fn buf_from(slice: &[u8]) -> Vec<u8> {
        let mut v = Vec::new();
        for pix in slice.chunks_exact(3) {
            v.extend_from_slice(pix);
            v.push(255);
        }
        v
    }

#[test]
    fn small() {
        if !is_x86_feature_detected!("sse2") {
            return;
        }
        let frame1 = [1, 2, 3, 4, 5, 6];
        let frame2 = [1, 2, 3, 6, 5, 4];
        let mut compressed = Vec::new();
        unsafe { pack_bytes(&frame1, &frame2, &mut compressed) };

let mut buf = buf_from(&frame1);
        unpack_bytes_4channels(&mut buf, &compressed);
        for i in 0..2 {
            for j in 0..3 {
                assert_eq!(
                    frame2[i * 3 + j],
                    buf[i * 4 + j],
                    "\nframe2: {frame2:?}, buf: {buf:?}\n"
                );
            }
        }
    }

#[test]
    fn total_random() {
        if !is_x86_feature_detected!("sse2") {
            return;
        }
        for _ in 0..10 {
            let mut original = Vec::with_capacity(20);
            for _ in 0..20 {
                let mut v = Vec::with_capacity(3000);
                for _ in 0..3000 {
                    v.push(random::<u8>());
                }
                original.push(v);
            }

let mut compressed = Vec::with_capacity(20);
            let mut buf = Vec::new();
            unsafe { pack_bytes(original.last().unwrap(), &original[0], &mut buf) }
            compressed.push(buf.clone().into_boxed_slice());
            for i in 1..20 {
                buf.clear();
                unsafe { pack_bytes(&original[i - 1], &original[i], &mut buf) }
                compressed.push(buf.clone().into_boxed_slice());
            }

#[test]
    fn full() {
        if !is_x86_feature_detected!("sse2") {
            return;
        }
        for _ in 0..10 {
            let mut original = Vec::with_capacity(20);
            for j in 0..20 {
                let mut v = Vec::with_capacity(3006);
                v.extend([j, 0, 0, 0, 0, j]);
                for _ in 0..750 {
                    v.push(random::<u8>());
                }
                for i in 0..750 {
                    v.push((i % 255) as u8);
                }
                for _ in 0..750 {
                    v.push(random::<u8>());
                }
                for i in 0..750 {
                    v.push((i % 255) as u8);
                }
                original.push(v);
            }

let mut buf = buf_from(original.last().unwrap());
            for i in 0..20 {
                unpack_bytes_4channels(&mut buf, &compressed[i]);
                let mut j = 0;
                let mut l = 0;
                while j < 3000 {
                    for k in 0..3 {
                        assert_eq!(
                            buf[j + l + k],
                            original[i][j + k],
                            "Failed at index: {}",
                            j + k
                        );
                    }
                    j += 3;
                    l += 1;
                }
            }
        }
    }
}
0707010000003E000081A400000000000000000000000165FE27530000089A000000000000000000000000000000000000002800000000swww-0.9.1/utils/src/compression/cpu.rs//! This module detects cpu features once and caches the results in mutable statics
//!
//! The mutable statics are not public, and therefore they are innacessible from other modules.
//! The only thing this module exposes are functions that let us read them, and one function to
//! initialize them.
//!
//! At worst, if we forget to initialize them, they will be holding false by default, and we won't
//! be using the more optimized versions of the relevant functions.

use std::sync::Once;

/// This macro declares a a cpu feature as a static mut, automatically generating a getter
/// function for it. Using it is safe because no one can modify it outside this module
macro_rules! decl_feature {
    ($feature:ident, $function:ident) => {
        static mut $feature: bool = false;
        #[inline(always)]
        pub fn $function() -> bool {
            // SAFETY: we ensure this is false by default, and only changes ONCE, if someone calls
            // this module's init() function
            unsafe { $feature }
        }
    };
}

static ONCE_INIT: Once = Once::new();
pub(super) fn init() {
    // SAFETY: features::init will modify some static mut variables. It is safe because we are
    // wrapping them in a Once call
    ONCE_INIT.call_once(|| unsafe { features::init() });
}

#[cfg(target_arch = "x86_64")]
pub mod features {
    decl_feature!(SSE2, sse2);
    decl_feature!(SSSE3, ssse3);

/// # Safety
    ///
    /// This function modifies the static muts inside this module, so it mustn't be called while
    /// someone else is trying to read them.
    ///
    /// That said, at worst, what will happen is that they will default to false and we won't use
    /// the most optimized versions of some functions. The case where we will accidentally call a
    /// function with unsupported instructions will never happen.
    pub(super) unsafe fn init() {
        SSE2 = is_x86_feature_detected!("sse2");
        SSSE3 = is_x86_feature_detected!("ssse3");
    }
}

#[cfg(not(target_arch = "x86_64"))]
pub mod features {

/// UNIMPLEMENTED!!! This function must exist so that the init function in super compiles on
    /// any target
    pub(super) unsafe fn init() {}
}
0707010000003F000041ED00000000000000000000000265FE275300000000000000000000000000000000000000000000002800000000swww-0.9.1/utils/src/compression/decomp07070100000040000081A400000000000000000000000165FE275300001391000000000000000000000000000000000000002F00000000swww-0.9.1/utils/src/compression/decomp/mod.rs//! This modules contains all the decompression functions, including the specialized ones using
//! architecture-dependent instructions

#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
pub(super) mod ssse3;

/// diff must be a slice produced by a BitPack
/// buf must have the EXACT expected size by the BitPack
#[inline(always)]
pub(super) fn unpack_bytes_4channels(buf: &mut [u8], diff: &[u8]) {
    assert!(
        diff[diff.len() - 1] | diff[diff.len() - 2] == 0,
        "Poorly formed BitPack"
    );
    // use the most efficient implementation available:
    #[cfg(not(test))] // when testing, we want to use the specific implementation
    {
        #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
        if super::cpu::features::ssse3() {
            return unsafe { ssse3::unpack_bytes_4channels(buf, diff) };
        }
    }

// The final bytes are just padding to prevent us from going out of bounds
    let len = diff.len() - 3;
    let buf_ptr = buf.as_mut_ptr();
    let diff_ptr = diff.as_ptr();

let mut diff_idx = 0;
    let mut pix_idx = 0;
    while diff_idx < len {
        while unsafe { diff_ptr.add(diff_idx).read() } == u8::MAX {
            pix_idx += u8::MAX as usize;
            diff_idx += 1;
        }
        pix_idx += unsafe { diff_ptr.add(diff_idx).read() } as usize;
        diff_idx += 1;

let mut to_cpy = 0;
        while unsafe { diff_ptr.add(diff_idx).read() } == u8::MAX {
            to_cpy += u8::MAX as usize;
            diff_idx += 1;
        }
        to_cpy += unsafe { diff_ptr.add(diff_idx).read() } as usize;
        diff_idx += 1;

assert!(
            diff_idx + to_cpy * 3 + 1 < diff.len(),
            "copying: {}, diff.len(): {}",
            diff_idx + to_cpy * 3 + 1,
            diff.len()
        );
        for _ in 0..to_cpy {
            unsafe {
                std::ptr::copy_nonoverlapping(diff_ptr.add(diff_idx), buf_ptr.add(pix_idx * 4), 4)
            }
            diff_idx += 3;
            pix_idx += 1;
        }
        pix_idx += 1;
    }
}

#[inline(always)]
pub(super) fn unpack_bytes_3channels(buf: &mut [u8], diff: &[u8]) {
    assert!(
        diff[diff.len() - 1] | diff[diff.len() - 2] == 0,
        "Poorly formed BitPack"
    );
    // The final bytes are just padding to prevent us from going out of bounds
    let len = diff.len() - 3;
    let buf_ptr = buf.as_mut_ptr();
    let diff_ptr = diff.as_ptr();

assert!(
            diff_idx + to_cpy * 3 <= diff.len(),
            "diff_idx: {diff_idx}, to_copy: {to_cpy}, diff.len(): {}",
            diff.len()
        );
        unsafe {
            std::ptr::copy_nonoverlapping(
                diff_ptr.add(diff_idx),
                buf_ptr.add(pix_idx * 3),
                to_cpy * 3,
            );
        }
        diff_idx += to_cpy * 3;
        pix_idx += to_cpy + 1;
    }
}

#[cfg(test)]
mod tests {
    use super::*;

#[test]
    #[should_panic]
    fn ub_unpack_bytes4_poorly_formed() {
        let mut bytes = vec![u8::MAX; 9];
        let diff = vec![u8::MAX; 18];
        unpack_bytes_4channels(&mut bytes, &diff);
    }

#[test]
    #[should_panic]
    fn ub_unpack_bytes3_poorly_formed() {
        let mut bytes = vec![u8::MAX; 9];
        let diff = vec![u8::MAX; 18];
        unpack_bytes_3channels(&mut bytes, &diff);
    }

#[test]
    #[should_panic]
    fn ub_unpack_bytes4_poorly_formed2() {
        let mut bytes = vec![u8::MAX; 9];
        let mut diff = vec![u8::MAX; 18];
        diff[8] = 0;
        diff[7] = 0;
        unpack_bytes_4channels(&mut bytes, &diff);
    }

#[test]
    #[should_panic]
    fn ub_unpack_bytes3_poorly_formed2() {
        let mut bytes = vec![u8::MAX; 9];
        let mut diff = vec![u8::MAX; 18];
        diff[8] = 0;
        diff[7] = 0;
        unpack_bytes_3channels(&mut bytes, &diff);
    }

#[test]
    #[should_panic]
    fn ub_unpack_bytes4_poorly_formed3() {
        let mut bytes = vec![u8::MAX; 9];
        let mut diff = vec![u8::MAX; 18];
        diff[8] = 0;
        diff[7] = 0;
        diff[2] = 0;
        unpack_bytes_4channels(&mut bytes, &diff);
    }

#[test]
    #[should_panic]
    fn ub_unpack_bytes3_poorly_formed3() {
        let mut bytes = vec![u8::MAX; 9];
        let mut diff = vec![u8::MAX; 18];
        diff[8] = 0;
        diff[7] = 0;
        diff[2] = 0;
        unpack_bytes_3channels(&mut bytes, &diff);
    }
}
07070100000041000081A400000000000000000000000165FE2753000017AF000000000000000000000000000000000000003100000000swww-0.9.1/utils/src/compression/decomp/ssse3.rs#[inline]
#[target_feature(enable = "ssse3")]
pub(super) unsafe fn unpack_bytes_4channels(buf: &mut [u8], diff: &[u8]) {
    use std::arch::x86_64 as intr;

// The final bytes are just padding to prevent us from going out of bounds
    let len = diff.len() - 3;
    let buf_ptr = buf.as_mut_ptr();
    let diff_ptr = diff.as_ptr();
    let mask = intr::_mm_set_epi8(-1, 11, 10, 9, -1, 8, 7, 6, -1, 5, 4, 3, -1, 2, 1, 0);

let mut diff_idx = 0;
    let mut pix_idx = 0;
    while diff_idx < len {
        while diff_ptr.add(diff_idx).read() == u8::MAX {
            pix_idx += u8::MAX as usize;
            diff_idx += 1;
        }
        pix_idx += diff_ptr.add(diff_idx).read() as usize;
        diff_idx += 1;

let mut to_cpy = 0;
        while diff_ptr.add(diff_idx).read() == u8::MAX {
            to_cpy += u8::MAX as usize;
            diff_idx += 1;
        }
        to_cpy += diff_ptr.add(diff_idx).read() as usize;
        diff_idx += 1;

assert!(
            diff_idx + to_cpy * 3 + 1 < diff.len(),
            "copying: {}, diff.len(): {}",
            diff_idx + to_cpy * 3 + 1,
            diff.len()
        );
        while to_cpy > 4 {
            let d = intr::_mm_loadu_si128(diff_ptr.add(diff_idx).cast());
            let to_store = intr::_mm_shuffle_epi8(d, mask);
            intr::_mm_storeu_si128(buf_ptr.add(pix_idx * 4).cast(), to_store);

diff_idx += 12;
            pix_idx += 4;
            to_cpy -= 4;
        }
        for _ in 0..to_cpy {
            std::ptr::copy_nonoverlapping(diff_ptr.add(diff_idx), buf_ptr.add(pix_idx * 4), 4);
            diff_idx += 3;
            pix_idx += 1;
        }
        pix_idx += 1;
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use crate::compression::pack_bytes;
    use rand::prelude::random;

#[test]
    fn small() {
        if !is_x86_feature_detected!("ssse3") {
            return;
        }
        let frame1 = [1, 2, 3, 4, 5, 6];
        let frame2 = [1, 2, 3, 6, 5, 4];
        let mut compressed = Vec::new();
        unsafe { pack_bytes(&frame1, &frame2, &mut compressed) }

let mut buf = buf_from(&frame1);
        unsafe { unpack_bytes_4channels(&mut buf, &compressed) }
        for i in 0..2 {
            for j in 0..3 {
                assert_eq!(
                    frame2[i * 3 + j],
                    buf[i * 4 + j],
                    "\nframe2: {frame2:?}, buf: {buf:?}\n"
                );
            }
        }
    }

#[test]
    fn total_random() {
        if !is_x86_feature_detected!("ssse3") {
            return;
        }
        for _ in 0..10 {
            let mut original = Vec::with_capacity(20);
            for _ in 0..20 {
                let mut v = Vec::with_capacity(3000);
                for _ in 0..3000 {
                    v.push(random::<u8>());
                }
                original.push(v);
            }

let mut buf = buf_from(original.last().unwrap());
            for i in 0..20 {
                unsafe { unpack_bytes_4channels(&mut buf, &compressed[i]) }
                let mut j = 0;
                let mut l = 0;
                while j < 3000 {
                    for k in 0..3 {
                        assert_eq!(
                            buf[j + l + k],
                            original[i][j + k],
                            "Failed at index: {}",
                            j + k
                        );
                    }
                    j += 3;
                    l += 1;
                }
            }
        }
    }

#[test]
    fn full() {
        if !is_x86_feature_detected!("ssse3") {
            return;
        }
        for _ in 0..10 {
            let mut original = Vec::with_capacity(20);
            for _ in 0..20 {
                let mut v = Vec::with_capacity(3000);
                for _ in 0..750 {
                    v.push(random::<u8>());
                }
                for i in 0..750 {
                    v.push((i % 255) as u8);
                }
                for _ in 0..750 {
                    v.push(random::<u8>());
                }
                for i in 0..750 {
                    v.push((i % 255) as u8);
                }
                original.push(v);
            }

use comp::pack_bytes;
use decomp::{unpack_bytes_3channels, unpack_bytes_4channels};
use std::ffi::{c_char, c_int};

use rkyv::{Archive, Deserialize, Serialize};

use crate::ipc::{ArchivedPixelFormat, PixelFormat};
mod comp;
mod cpu;
mod decomp;

/// extracted from lz4.h
const LZ4_MAX_INPUT_SIZE: usize = 0x7E000000;

extern "C" {
    /// # Safety
    ///
    /// This is guaranteed to succeed if `dst_cap >= LZ4_compressBound`.
    fn LZ4_compress_HC(
        src: *const c_char,
        dst: *mut c_char,
        src_len: c_int,
        dst_cap: c_int,
        comp_level: c_int,
    ) -> c_int;

/// # Safety
    ///
    /// Fails when src is malformed, or dst_cap is insufficient.
    fn LZ4_decompress_safe(
        src: *const c_char,
        dst: *mut c_char,
        compressed_size: c_int,
        dst_cap: c_int,
    ) -> c_int;

/// # Safety
    ///
    /// Only works for input_size <= LZ4_MAX_INPUT_SIZE.
    fn LZ4_compressBound(input_size: c_int) -> c_int;
}

/// This struct represents the cached difference between the previous frame and the next
#[derive(Archive, Serialize, Deserialize)]
pub struct BitPack {
    inner: Box<[u8]>,
    /// This field will ensure we won't ever try to unpack the images on a buffer of the wrong size,
    /// which ultimately is what allows us to use unsafe in the unpack_bytes function
    expected_buf_size: usize,

compressed_size: i32,
}

/// Struct responsible for compressing our data. We use it to cache vector extensions that might
/// speed up compression
#[derive(Default)]
pub struct Compressor {
    buf: Vec<u8>,
}

impl Compressor {
    #[inline]
    pub fn new() -> Self {
        cpu::init();
        Self { buf: Vec::new() }
    }

/// Compresses a frame of animation by getting the difference between the previous and the
    /// current frame, and then running lz4
    ///
    /// # Returns:
    ///   * None if the two frames are identical
    ///   * Some(bytes) if compression yielded something
    ///
    /// # Panics:
    ///   * `prev.len() != cur.len()`
    ///   * the len of the diff buffer is larger than 0x7E000000. In practice, this can only
    ///   happen for 64k monitors and beyond
    #[inline]
    pub fn compress(
        &mut self,
        prev: &[u8],
        cur: &[u8],
        pixel_format: ArchivedPixelFormat,
    ) -> Option<BitPack> {
        assert_eq!(
            prev.len(),
            cur.len(),
            "swww cannot currently deal with animations whose frames have different sizes!"
        );

self.buf.clear();
        // SAFETY: the above assertion ensures prev.len() and cur.len() are equal, as needed
        unsafe { pack_bytes(prev, cur, &mut self.buf) }

if self.buf.is_empty() {
            return None;
        }

// This should only be a problem with 64k monitors and beyond, (hopefully) far into the future
        assert!(
            self.buf.len() <= LZ4_MAX_INPUT_SIZE,
            "frame is too large! cannot compress with LZ4!"
        );

// SAFETY: the above assertion ensures this will never fail
        let size = unsafe { LZ4_compressBound(self.buf.len() as c_int) } as usize;
        let mut v = vec![0; size];
        // SAFETY: we've ensured above that size >= LZ4_compressBound, so this should always work
        let n = unsafe {
            LZ4_compress_HC(
                self.buf.as_ptr().cast(),
                v.as_mut_ptr() as _,
                self.buf.len() as c_int,
                size as c_int,
                9,
            ) as usize
        };
        v.truncate(n);

let expected_buf_size = if pixel_format.channels() == 3 {
            cur.len()
        } else {
            (cur.len() / 3) * 4
        };

Some(BitPack {
            inner: v.into_boxed_slice(),
            expected_buf_size,
            compressed_size: self.buf.len() as i32,
        })
    }
}

pub struct Decompressor {
    /// this pointer stores an inner buffer we need to speed up decompression
    /// note we explicitly do not care about its length
    ptr: std::ptr::NonNull<u8>,
    cap: usize,
}

impl Drop for Decompressor {
    #[inline]
    fn drop(&mut self) {
        if self.cap > 0 {
            let layout = std::alloc::Layout::array::<u8>(self.cap).unwrap();
            unsafe { std::alloc::dealloc(self.ptr.as_ptr(), layout) }
        }
    }
}

impl Decompressor {
    #[allow(clippy::new_without_default)]
    #[inline]
    pub fn new() -> Self {
        cpu::init();
        Self {
            ptr: std::ptr::NonNull::dangling(),
            cap: 0,
        }
    }

fn ensure_capacity(&mut self, goal: usize) {
        if self.cap >= goal {
            return;
        }

self.ptr = ptr;
        self.cap = goal;
    }

///returns whether unpacking was successful. Note it can only fail if `buf.len() !=
    ///expected_buf_size`
    #[inline]
    pub fn decompress(
        &mut self,
        bitpack: &BitPack,
        buf: &mut [u8],
        pixel_format: PixelFormat,
    ) -> Result<(), String> {
        if buf.len() != bitpack.expected_buf_size {
            return Err(format!(
                "buf has len {}, but expected len is {}",
                buf.len(),
                bitpack.expected_buf_size
            ));
        }

self.ensure_capacity(bitpack.compressed_size as usize);

// SAFETY: errors will never happen because BitPacked is *always* only produced
        // with correct lz4 compression, and ptr has the necessary capacity
        let size = unsafe {
            LZ4_decompress_safe(
                bitpack.inner.as_ptr() as _,
                self.ptr.as_ptr() as _,
                bitpack.inner.len() as c_int,
                bitpack.compressed_size as c_int,
            )
        };

if size != bitpack.compressed_size {
            return Err("BitPack is malformed!".to_string());
        }

// SAFETY: the call to self.ensure_capacity guarantees the pointer has the necessary size
        // to hold all the data
        let v = unsafe {
            std::slice::from_raw_parts_mut(self.ptr.as_ptr(), bitpack.compressed_size as usize)
        };

if pixel_format.can_copy_directly_onto_wl_buffer() {
            unpack_bytes_3channels(buf, v);
        } else {
            unpack_bytes_4channels(buf, v);
        }

Ok(())
    }

///returns whether unpacking was successful. Note it can only fail if `buf.len() !=
    ///expected_buf_size`
    ///This function is identical to its non-archived counterpart
    #[inline]
    pub fn decompress_archived(
        &mut self,
        archived: &ArchivedBitPack,
        buf: &mut [u8],
        pixel_format: PixelFormat,
    ) -> Result<(), String> {
        let expected_len: usize = archived
            .expected_buf_size
            .deserialize(&mut rkyv::Infallible)
            .unwrap();
        if buf.len() != expected_len {
            return Err(format!(
                "buf has len {}, but expected len is {}",
                buf.len(),
                expected_len
            ));
        }
        let cap: i32 = archived
            .compressed_size
            .deserialize(&mut rkyv::Infallible)
            .unwrap();

self.ensure_capacity(cap as usize);

// SAFETY: errors will never happen because BitPacked is *always* only produced
        // with correct lz4 compression, and ptr has the necessary capacity
        let size = unsafe {
            LZ4_decompress_safe(
                archived.inner.as_ptr() as _,
                self.ptr.as_ptr() as _,
                archived.inner.len() as c_int,
                cap as c_int,
            )
        };

if size != cap {
            return Err("BitPack is malformed!".to_string());
        }

// SAFETY: the call to self.ensure_capacity guarantees the pointer has the necessary size
        // to hold all the data
        let v = unsafe { std::slice::from_raw_parts_mut(self.ptr.as_ptr(), cap as usize) };

if pixel_format.can_copy_directly_onto_wl_buffer() {
            unpack_bytes_3channels(buf, v);
        } else {
            unpack_bytes_4channels(buf, v);
        }

Ok(())
    }
}

#[cfg(test)]
mod tests {
    use super::*;
    use rand::prelude::random;

const C_FORMS: [ArchivedPixelFormat; 2] = [ArchivedPixelFormat::Xrgb, ArchivedPixelFormat::Rgb];
    const D_FORMS: [PixelFormat; 2] = [PixelFormat::Xrgb, PixelFormat::Rgb];

fn buf_from(slice: &[u8], original_channels: usize) -> Vec<u8> {
        if original_channels == 3 {
            return slice.to_vec();
        }
        let mut v = Vec::new();
        for pix in slice.chunks_exact(3) {
            v.extend_from_slice(pix);
            v.push(255);
        }
        v
    }

#[test]
    //Use this when annoying problems show up
    fn small() {
        for (c_form, d_form) in C_FORMS.into_iter().zip(D_FORMS) {
            let frame1 = [1, 2, 3, 4, 5, 6];
            let frame2 = [1, 2, 3, 6, 5, 4];
            let compressed = Compressor::new()
                .compress(&frame1, &frame2, c_form)
                .unwrap();

let mut buf = buf_from(&frame1, c_form.channels().into());
            Decompressor::new()
                .decompress(&compressed, &mut buf, d_form)
                .unwrap();
            for i in 0..2 {
                for j in 0..3 {
                    assert_eq!(
                        frame2[i * 3 + j],
                        buf[i * c_form.channels() as usize + j],
                        "\nframe2: {frame2:?}, buf: {buf:?}\n"
                    );
                }
            }
        }
    }

#[test]
    fn total_random() {
        for (c_form, d_form) in C_FORMS.into_iter().zip(D_FORMS) {
            for _ in 0..10 {
                let mut original = Vec::with_capacity(20);
                for _ in 0..20 {
                    let mut v = Vec::with_capacity(3000);
                    for _ in 0..3000 {
                        v.push(random::<u8>());
                    }
                    original.push(v);
                }

let mut compressed = Vec::with_capacity(20);
                let mut compressor = Compressor::new();
                let mut decompressor = Decompressor::new();
                compressed.push(
                    compressor
                        .compress(original.last().unwrap(), &original[0], c_form)
                        .unwrap(),
                );
                for i in 1..20 {
                    compressed.push(
                        compressor
                            .compress(&original[i - 1], &original[i], c_form)
                            .unwrap(),
                    );
                }

let mut buf = buf_from(original.last().unwrap(), c_form.channels().into());
                for i in 0..20 {
                    decompressor
                        .decompress(&compressed[i], &mut buf, d_form)
                        .unwrap();
                    let mut j = 0;
                    let mut l = 0;
                    while j < 3000 {
                        for k in 0..3 {
                            assert_eq!(
                                buf[j + l + k],
                                original[i][j + k],
                                "Failed at index: {}",
                                j + k
                            );
                        }
                        j += 3;
                        l += !d_form.can_copy_directly_onto_wl_buffer() as usize;
                    }
                }
            }
        }
    }

#[test]
    fn full() {
        for (c_form, d_form) in C_FORMS.into_iter().zip(D_FORMS) {
            for _ in 0..10 {
                let mut original = Vec::with_capacity(20);
                for _ in 0..20 {
                    let mut v = Vec::with_capacity(3000);
                    for _ in 0..750 {
                        v.push(random::<u8>());
                    }
                    for i in 0..750 {
                        v.push((i % 255) as u8);
                    }
                    for _ in 0..750 {
                        v.push(random::<u8>());
                    }
                    for i in 0..750 {
                        v.push((i % 255) as u8);
                    }
                    original.push(v);
                }

let mut compressor = Compressor::new();
                let mut decompressor = Decompressor::new();
                let mut compressed = Vec::with_capacity(20);
                compressed.push(
                    compressor
                        .compress(original.last().unwrap(), &original[0], c_form)
                        .unwrap(),
                );
                for i in 1..20 {
                    compressed.push(
                        compressor
                            .compress(&original[i - 1], &original[i], c_form)
                            .unwrap(),
                    );
                }

use crate::{cache, compression::BitPack};

#[derive(PartialEq, Archive, Serialize)]
#[archive_attr(derive(Clone))]
pub enum Coord {
    Pixel(f32),
    Percent(f32),
}

#[derive(PartialEq, Archive, Serialize)]
#[archive_attr(derive(Clone))]
pub struct Position {
    pub x: Coord,
    pub y: Coord,
}

impl Position {
    #[must_use]
    pub fn new(x: Coord, y: Coord) -> Self {
        Self { x, y }
    }

#[must_use]
    pub fn to_pixel(&self, dim: (u32, u32), invert_y: bool) -> (f32, f32) {
        let x = match self.x {
            Coord::Pixel(x) => x,
            Coord::Percent(x) => x * dim.0 as f32,
        };

let y = match self.y {
            Coord::Pixel(y) => {
                if invert_y {
                    dim.1 as f32 - y
                } else {
                    y
                }
            }
            Coord::Percent(y) => {
                if invert_y {
                    (1.0 - y) * dim.1 as f32
                } else {
                    y * dim.1 as f32
                }
            }
        };

(x, y)
    }

#[must_use]
    pub fn to_percent(&self, dim: (u32, u32)) -> (f32, f32) {
        let x = match self.x {
            Coord::Pixel(x) => x / dim.0 as f32,
            Coord::Percent(x) => x,
        };

let y = match self.y {
            Coord::Pixel(y) => y / dim.1 as f32,
            Coord::Percent(y) => y,
        };

(x, y)
    }
}

impl ArchivedPosition {
    #[must_use]
    pub fn to_pixel(&self, dim: (u32, u32), invert_y: bool) -> (f32, f32) {
        let x = match self.x {
            ArchivedCoord::Pixel(x) => x,
            ArchivedCoord::Percent(x) => x * dim.0 as f32,
        };

let y = match self.y {
            ArchivedCoord::Pixel(y) => {
                if invert_y {
                    dim.1 as f32 - y
                } else {
                    y
                }
            }
            ArchivedCoord::Percent(y) => {
                if invert_y {
                    (1.0 - y) * dim.1 as f32
                } else {
                    y * dim.1 as f32
                }
            }
        };

(x, y)
    }
}

#[derive(Debug, PartialEq, Clone, Archive, Serialize, Deserialize)]
#[archive_attr(derive(PartialEq))]
pub enum BgImg {
    Color([u8; 3]),
    Img(String),
}

impl fmt::Display for BgImg {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            BgImg::Color(color) => {
                write!(f, "color: {:02X}{:02X}{:02X}", color[0], color[1], color[2])
            }
            BgImg::Img(p) => write!(f, "image: {p}",),
        }
    }
}

impl ArchivedBgImg {
    /// Deserialized the archived bg img
    #[must_use]
    pub fn de(&self) -> BgImg {
        self.deserialize(&mut rkyv::Infallible).unwrap()
    }
}

impl fmt::Display for ArchivedBgImg {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            ArchivedBgImg::Color(color) => {
                write!(f, "color: {:02X}{:02X}{:02X}", color[0], color[1], color[2])
            }
            ArchivedBgImg::Img(p) => write!(f, "image: {p}",),
        }
    }
}

#[derive(Clone, Copy, Debug, Archive, Serialize, Deserialize, PartialEq)]
#[archive_attr(derive(Clone, Copy, Debug))]
pub enum PixelFormat {
    /// No swap, can copy directly onto WlBuffer
    Bgr,
    /// Swap R and B channels at client, can copy directly onto WlBuffer
    Rgb,
    /// No swap, must extend pixel with an extra byte when copying
    Xbgr,
    /// Swap R and B channels at client, must extend pixel with an extra byte when copying
    Xrgb,
}

impl PixelFormat {
    #[inline]
    #[must_use]
    pub const fn channels(&self) -> u8 {
        match self {
            Self::Rgb => 3,
            Self::Bgr => 3,
            Self::Xbgr => 4,
            Self::Xrgb => 4,
        }
    }

#[inline]
    #[must_use]
    pub const fn must_swap_r_and_b_channels(&self) -> bool {
        match self {
            Self::Bgr => false,
            Self::Rgb => true,
            Self::Xbgr => false,
            Self::Xrgb => true,
        }
    }

#[inline]
    #[must_use]
    pub const fn can_copy_directly_onto_wl_buffer(&self) -> bool {
        match self {
            Self::Bgr => true,
            Self::Rgb => true,
            Self::Xbgr => false,
            Self::Xrgb => false,
        }
    }
}

impl ArchivedPixelFormat {
    #[inline]
    #[must_use]
    pub const fn channels(&self) -> u8 {
        match self {
            Self::Rgb => 3,
            Self::Bgr => 3,
            Self::Xbgr => 4,
            Self::Xrgb => 4,
        }
    }

#[inline]
    #[must_use]
    pub fn de(&self) -> PixelFormat {
        self.deserialize(&mut rkyv::Infallible).unwrap()
    }
}

#[derive(Clone, Archive, Serialize)]
pub struct BgInfo {
    pub name: String,
    pub dim: (u32, u32),
    pub scale_factor: i32,
    pub img: BgImg,
    pub pixel_format: PixelFormat,
}

impl BgInfo {
    #[inline]
    #[must_use]
    pub fn real_dim(&self) -> (u32, u32) {
        (
            self.dim.0 * self.scale_factor as u32,
            self.dim.1 * self.scale_factor as u32,
        )
    }
}

impl fmt::Display for ArchivedBgInfo {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            f,
            "{}: {}x{}, scale: {}, currently displaying: {}",
            self.name, self.dim.0, self.dim.1, self.scale_factor, self.img
        )
    }
}

#[derive(Archive, Serialize)]
#[archive_attr(derive(Clone))]
pub enum TransitionType {
    Simple,
    Fade,
    Outer,
    Wipe,
    Grow,
    Wave,
}

#[derive(Archive, Serialize)]
#[archive_attr(derive(Clone))]
pub struct Transition {
    pub transition_type: TransitionType,
    pub duration: f32,
    pub step: u8,
    pub fps: u16,
    pub angle: f64,
    pub pos: Position,
    pub bezier: (f32, f32, f32, f32),
    pub wave: (f32, f32),
    pub invert_y: bool,
}

#[derive(Archive, Serialize)]
pub struct Clear {
    pub color: [u8; 3],
    pub outputs: Box<[String]>,
}

#[derive(Archive, Serialize)]
pub struct Img {
    pub path: String,
    pub img: Box<[u8]>,
}

#[derive(Archive, Serialize, Deserialize)]
pub struct Animation {
    pub animation: Box<[(BitPack, Duration)]>,
    pub path: String,
    pub dimensions: (u32, u32),
    pub pixel_format: PixelFormat,
}

pub type AnimationRequest = Box<[(Animation, Box<[String]>)]>;
pub type ImageRequest = (Transition, Box<[(Img, Box<[String]>)]>);

#[derive(Archive, Serialize)]
pub enum Request {
    Animation(AnimationRequest),
    Clear(Clear),
    Ping,
    Kill,
    Query,
    Img(ImageRequest),
}

impl Request {
    pub fn send(&self, stream: &UnixStream) -> Result<(), String> {
        let bytes = match rkyv::to_bytes::<_, 1024>(self) {
            Ok(bytes) => bytes,
            Err(e) => return Err(format!("Failed to serialize request: {e}")),
        };

std::thread::scope(|s| {
            if let Self::Animation(animations) = self {
                s.spawn(|| {
                    for (animation, _) in animations.iter() {
                        // only store the cache if we aren't reading from stdin
                        if animation.path != "-" {
                            if let Err(e) = cache::store_animation_frames(animation) {
                                eprintln!("Error storing cache for {}: {e}", animation.path);
                            }
                        }
                    }
                });
            }
            let mut writer = BufWriter::new(stream);
            if let Err(e) = writer.write_all(&bytes.len().to_ne_bytes()) {
                return Err(format!("failed to write serialized request's length: {e}"));
            }
            if let Err(e) = writer.write_all(&bytes) {
                Err(format!("failed to write serialized request: {e}"))
            } else {
                if let Self::Img((_, imgs)) = self {
                    for (Img { path, .. }, outputs) in imgs.iter() {
                        for output in outputs.iter() {
                            if let Err(e) = super::cache::store(output, path) {
                                eprintln!("ERROR: failed to store cache: {e}");
                            }
                        }
                    }
                }
                Ok(())
            }
        })
    }

#[must_use]
    pub fn receive(bytes: &[u8]) -> &ArchivedRequest {
        unsafe { rkyv::archived_root::<Self>(bytes) }
    }
}

#[derive(Archive, Serialize)]
pub enum Answer {
    Ok,
    Err(String),
    Info(Box<[BgInfo]>),
    Ping(bool),
}

impl Answer {
    pub fn send(&self, stream: &UnixStream) -> Result<(), String> {
        let bytes = match rkyv::to_bytes::<_, 256>(self) {
            Ok(bytes) => bytes,
            Err(e) => return Err(format!("Failed to serialize answer: {e}")),
        };
        let mut writer = BufWriter::new(stream);
        if let Err(e) = writer.write_all(&bytes.len().to_ne_bytes()) {
            return Err(format!("failed to write serialized answer's length: {e}"));
        }
        if let Err(e) = writer.write_all(&bytes) {
            Err(format!("Failed to write serialized answer: {e}"))
        } else {
            Ok(())
        }
    }

#[must_use]
    pub fn receive(bytes: &[u8]) -> &ArchivedAnswer {
        unsafe { rkyv::archived_root::<Self>(bytes) }
    }
}

pub fn read_socket(stream: &UnixStream) -> Result<Vec<u8>, String> {
    let mut reader = BufReader::new(stream);
    let mut buf = vec![0; 8];

let mut tries = 0;
    loop {
        match reader.read_exact(&mut buf[0..std::mem::size_of::<usize>()]) {
            Ok(()) => break,
            Err(e) => {
                if e.kind() == std::io::ErrorKind::WouldBlock && tries < 5 {
                    std::thread::sleep(Duration::from_millis(1));
                } else {
                    return Err(format!("failed to read serialized length: {e}"));
                }
            }
        }
        tries += 1;
    }
    let len = usize::from_ne_bytes(buf[0..std::mem::size_of::<usize>()].try_into().unwrap());
    buf.clear();
    buf.resize(len, 0);

if let Err(e) = reader.read_exact(&mut buf) {
        return Err(format!("Failed to read request: {e}"));
    }
    Ok(buf)
}

#[must_use]
pub fn get_socket_path() -> PathBuf {
    let runtime_dir = if let Ok(dir) = std::env::var("XDG_RUNTIME_DIR") {
        dir
    } else {
        "/tmp/swww".to_string()
    };
    let runtime_dir = Path::new(&runtime_dir);
    runtime_dir.join("swww.socket")
}

pub fn get_cache_path() -> Result<PathBuf, String> {
    let cache_path = match std::env::var("XDG_CACHE_HOME") {
        Ok(dir) => {
            let mut cache = PathBuf::from(dir);
            cache.push("swww");
            cache
        }
        Err(_) => match std::env::var("HOME") {
            Ok(dir) => {
                let mut cache = PathBuf::from(dir);
                cache.push(".cache/swww");
                cache
            }
            Err(_) => return Err("failed to read both XDG_CACHE_HOME and HOME env vars".to_owned()),
        },
    };

if !cache_path.is_dir() {
        if let Err(e) = std::fs::create_dir(&cache_path) {
            return Err(format!(
                "failed to create cache_path \"{}\": {e}",
                cache_path.display()
            ));
        }
    }

Ok(cache_path)
}
07070100000044000081A400000000000000000000000165FE275300000031000000000000000000000000000000000000001C00000000swww-0.9.1/utils/src/lib.rspub mod cache;
pub mod compression;
pub mod ipc;
07070100000045000081ED00000000000000000000000165FE27530000041A000000000000000000000000000000000000001600000000swww-0.9.1/version.sh#!/bin/sh

# This is a helper script to use just before releasing a new version
# (it helps us not forget anything, as has happenned before)

if [ $# -lt 1 ]; then
	echo "Usage: $0 <new version name>"
	exit 1
fi

pkill swww-daemon

set -e

# don't forget updating dependencies and testing everything
cargo update
cargo test --workspace -- --include-ignored
./doc/gen.sh # make sure the docs "compile"

# Cargo.toml:
sed \
	-e "s/^version = .*/version = \"$1\"/" \
	-e "s/^utils.*/utils = { version = \"$1\", path = \"utils\" }/" \
	Cargo.toml > TMP
mv -v TMP Cargo.toml

sed "s/^version = .*/version = \"$1\"/" utils/Cargo.toml > TMP
mv -v TMP utils/Cargo.toml

sed \
	-e "s/^version = .*/version = \"$1\"/" \
	-e "s/^utils.*/utils = { version = \"$1\", path = \"..\/utils\" }/" \
	daemon/Cargo.toml > TMP
mv -v TMP daemon/Cargo.toml

# CHANGELOG:
sed -e "s/^### Unreleased/### $1/" \
	-e '1s/^/### Unreleased\n\n\n/' CHANGELOG.md > TMP
mv -v TMP CHANGELOG.md

# Make sure it still builds (just to be 100% safe), and to update Cargo.lock
cargo build
07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!663 blocks

Places

File swww-0.9.1.obscpio of Package swww

Places