File xv-3.10a-enhancements.20070520-20081216.diff of Package xv

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File xv-3.10a-enhancements.20070520-20081216.diff of Package xv (Revision cd9cf42d17081aaa260fd3f8ed41bcb7)

Currently displaying revision cd9cf42d17081aaa260fd3f8ed41bcb7 , Show latest

20070621
    fixed improper ClearCode termination condition in GIF decoder (JZ); fixed
    some minor inconsistencies in Makefile (GRR)
        - xv-joe-zbiciak-20070621-gif-decoder-bugfix.dif

20080121
    removed duplicate "XDestroyWindow(theDisp, pngW);" in xvmisc.c (IMC); fixed
    empty-filename click-and-crash bug in xvdir.c (IMC, DB)
        - xv-ian-collier-20080118-crash-fixes.msg
        - xv-david-bath-20080901-empty-filename-save-crash-fix.dif

20081205
    reverted xvxwd.c to SJT's version (bug reported by Jari Ruusu)

20081216
    fixed crash-bug in IFF decoder (EP)
        - xv-elmar-plischke-20081216-xviff-crash-fix.dif

diff -ru ../test3.20070520.stock/xv-3.10a/xv.h ./xv.h
--- ../test3.20070520.stock/xv-3.10a/xv.h	2007-05-20 22:23:33.000000000 -0700
+++ ./xv.h	2008-12-16 09:45:00.000000000 -0800
@@ -16,8 +16,9 @@
 /* GRR 2nd public jumbo F+E patches:	20050410 */
 /* GRR 3rd public jumbo F+E patches:	20050501 */
 /* GRR 4th public jumbo F+E patch:  	20070520 */
-#define REVDATE   "version 3.10a-jumboFix+Enh of 20070520"
-#define VERSTR    "3.10a-20070520"
+/* GRR 5th public jumbo F+E patch:  	200xxxxx (probably mid-2009) */
+#define REVDATE   "version 3.10a-jumboFix+Enh of 20081216 (interim!)"
+#define VERSTR    "3.10a-20081216"
 
 /*
  * uncomment the following, and modify for your site, but only if you've

diff -ru ../test3.20070520.stock/xv-3.10a/xvdir.c ./xvdir.c
--- ../test3.20070520.stock/xv-3.10a/xvdir.c	2007-05-20 22:23:33.000000000 -0700
+++ ./xvdir.c	2008-01-21 13:02:38.000000000 -0800
@@ -539,8 +539,9 @@
     return -1;
   }
 
-  /* handle clicks inside the filename box */
-  if (x > 80 &&
+  /* handle clicks inside the filename box, but only when box is not empty */
+  if (enPos > stPos &&
+      x > 80 &&
       y > dList.y + (int) dList.h + 30 &&
       x < 80 + DNAMWIDE+6 &&
       y < dList.y + (int) dList.h + 30 + LINEHIGH+5) {

diff -ru ../test3.20070520.stock/xv-3.10a/xvgif.c ./xvgif.c
--- ../test3.20070520.stock/xv-3.10a/xvgif.c	2007-05-20 22:23:33.000000000 -0700
+++ ./xvgif.c	2007-06-21 09:36:40.000000000 -0700
@@ -700,7 +700,7 @@
        * associated output code on the output queue.
        */
 
-      while (CurCode > BitMask) {
+      while (CurCode >= ClearCode) {  /* Joe Zbiciak fix, 20070621 */
 	if (OutCount > 4096) break;   /* corrupt file */
 	OutCode[OutCount++] = Suffix[CurCode];
 	CurCode = Prefix[CurCode];

diff -ru ../test3.20070520.stock/xv-3.10a/xvmisc.c ./xvmisc.c
|--- ../test3.20070520.stock/xv-3.10a/xvmisc.c	2007-05-20 22:23:33.000000000 -0700
|+++ ./xvmisc.c	2008-01-21 12:57:29.000000000 -0800
|@@ -561,10 +561,6 @@
|     if (mgcsfxW) XDestroyWindow(theDisp, mgcsfxW);
| #endif
| 
|-#ifdef HAVE_PNG
|-    if (pngW)  XDestroyWindow(theDisp, pngW);
|-#endif
|-
|     /* if NOT using stdcmap for images, free stdcmap */
|     if (colorMapMode != CM_STDCMAP) {
|       int j;

[This one reverts xvxwd.c to the pre-2007 SJT version, which actually worked...]

diff -ru ../test3.20070520.stock/xv-3.10a/xvxwd.c ./xvxwd.c
|--- ../test3.20070520.stock/xv-3.10a/xvxwd.c	2007-05-20 22:23:33.000000000 -0700
|+++ ./xvxwd.c	2008-12-06 00:30:44.000000000 -0800
|@@ -19,6 +19,12 @@
|  */
| 
| #include "xv.h"
|+#include <limits.h>             /* for CHAR_BIT */
|+
|+/* SJT: just in case ... */
|+#ifndef CHAR_BIT
|+#  define CHAR_BIT 8
|+#endif
| 
| 
| /***************************** x11wd.h *****************************/
|@@ -83,9 +89,14 @@
| static int    writebiglong    PARM((FILE *, CARD32));
| #endif
| 
|+static void   getcolorshift   PARM((CARD32, int *, int *)); /* SJT */
|+
|+/* SJT: for 16bpp and 24bpp shifts */
|+static int    red_shift_right, red_justify_left,
|+              grn_shift_right, grn_justify_left,
|+              blu_shift_right, blu_justify_left;
| static byte  *pic8, *pic24;
|-static CARD32 red_mask, green_mask, blue_mask;
|-static int    red_shift, green_shift, blue_shift;
|+static CARD32 red_mask, grn_mask, blu_mask;
| static int    bits_per_item, bits_used, bit_shift,
|               bits_per_pixel, bits_per_rgb;
| static char   buf[4];
|@@ -189,38 +200,34 @@
|       return 0;
|     }
| 
|-    switch (bits_per_pixel) {
|-    case 16:
|-    case 24:
|-    case 32:
|-      ;
|-    default:
|-      xwdError("True/Direct supports only 16, 24, and 32 bits");
|-      return 0;
|-    }
|+    for (row=0; row<rows; row++) {
|+      for (col=0, xP=pic24+(row*cols*3); col<cols; col++) {
|+	CARD32 ul;
| 
|-    if (byte_order == MSBFirst) {
|-      for (row=0; row<rows; row++) {
|-        for (col=0, xP=pic24+(row*cols*3); col<cols; col++) {
|-          register CARD32 ul = getpixnum(ifp);
|-
|-          *xP++ = ul >> red_shift   & red_mask  ;
|-          *xP++ = ul >> green_shift & green_mask;
|-          *xP++ = ul >> blue_shift  & blue_mask ;
|-        };
|-        for (col=0; col<padright; col++) getpixnum(ifp);
|-      }
|-    } else {
|-      for (row=0; row<rows; row++) {
|-        for (col=0, xP=pic24+(row*cols*3); col<cols; col++) {
|-          register CARD32 ul = getpixnum(ifp);
|-
|-          *xP++ = ul >> blue_shift  & blue_mask ;
|-          *xP++ = ul >> green_shift & green_mask;
|-          *xP++ = ul >> red_shift   & red_mask  ;
|-        };
|-        for (col=0; col<padright; col++) getpixnum(ifp);
|+	ul = getpixnum(ifp);
|+	switch (bits_per_pixel) {
|+        case 16:
|+        case 24:
|+        case 32:
|+          /* SJT: shift all the way to the right and then shift left. The
|+             pairs of shifts could be combined. There will be two right and
|+             one left shift, but it's unknown which will be which. It seems
|+             easier to do the shifts (which might be 0) separately than to
|+             have a complex set of tests. I believe this is independent of
|+             byte order but I have no way to test.
|+           */
|+          *xP++ = ((ul & red_mask) >> red_shift_right) << red_justify_left;
|+          *xP++ = ((ul & grn_mask) >> grn_shift_right) << grn_justify_left;
|+          *xP++ = ((ul & blu_mask) >> blu_shift_right) << blu_justify_left;
|+          break;
|+
|+	default:
|+	  xwdError("True/Direct supports only 16, 24, and 32 bits");
|+	  return 0;
|+	}
|       }
|+
|+      for (col=0; col<padright; col++) getpixnum(ifp);
|     }
| 
|     pinfo->type = PIC24;
|@@ -445,28 +452,18 @@
|      (i.e., 3 bytes, no alpha/padding) */
| 
| 
|-  bits_used      = bits_per_item;
|+  bits_used  = bits_per_item;
| 
|   if (bits_per_pixel == sizeof(pixel_mask) * 8)  pixel_mask = (CARD32) -1;
|   else pixel_mask = (1 << bits_per_pixel) - 1;
| 
|-  red_mask   = h11P->red_mask;
|-  green_mask = h11P->grn_mask;
|-  blue_mask  = h11P->blu_mask;
|-
|-  red_shift = blue_shift = green_shift = 0;
|-  while (!(red_mask & 1)) {
|-    red_mask >>= 1;
|-    ++red_shift;
|-  }
|-  while (!(blue_mask & 1)) {
|-    blue_mask >>= 1;
|-    ++blue_shift;
|-  }
|-  while (!(green_mask & 1)) {
|-    green_mask >>= 1;
|-    ++green_shift;
|-  }
|+  red_mask = h11P->red_mask;
|+  grn_mask = h11P->grn_mask;
|+  blu_mask = h11P->blu_mask;
|+
|+  getcolorshift(red_mask, &red_shift_right, &red_justify_left);
|+  getcolorshift(grn_mask, &grn_shift_right, &grn_justify_left);
|+  getcolorshift(blu_mask, &blu_shift_right, &blu_justify_left);
| 
|   byteP  = (char   *) buf;
|   shortP = (CARD16 *) buf;
|@@ -476,6 +473,45 @@
| }
| 
| 
|+/* SJT: figure out the proper shifts */
|+static void getcolorshift (CARD32 mask, int *rightshift, int *leftshift)
|+{
|+  int lshift, rshift;
|+  unsigned int uu;
|+
|+  if (mask == 0)
|+  {
|+    *rightshift = *leftshift = 0;
|+    return;
|+  }
|+
|+  uu = mask;
|+  lshift = rshift = 0;
|+  while ((uu & 0xf) == 0)
|+  {
|+      rshift += 4;
|+      uu >>= 4;
|+  }
|+  while ((uu & 1) == 0)
|+  {
|+      rshift++;
|+      uu >>= 1;
|+  }
|+
|+  while (uu != 0)
|+  {
|+      if (uu & 1)
|+      {
|+          lshift++;
|+          uu >>= 1;
|+      }
|+  }
|+  *rightshift = rshift;
|+  *leftshift = CHAR_BIT * sizeof(pixel) - lshift;
|+  return;
|+}
|+
|+
| /******************************/
| static CARD32 getpixnum(file)
|      FILE* file;

diff -ru ../test3.20070520.stock/xv-3.10a/xviff.c ./xviff.c
--- ../test3.20070520.stock/xv-3.10a/xviff.c	2007-05-13 17:50:59.000000000 -0700
+++ ./xviff.c	2008-12-16 09:20:25.000000000 -0800
@@ -73,6 +73,7 @@
   int           BMHDok, CMAPok, CAMGok;
   int           bmhd_width, bmhd_height, bmhd_bitplanes, bmhd_transcol;
   int           i, j, k, lineskip, colors, fmt;
+  int           npixels = 0; /* needs to be initialized _outside_ while-loop */
   byte          bmhd_masking, bmhd_compression;
   long          chunkLen, camg_viewmode;
   byte          *databuf, *dataptr, *cmapptr, *picptr, *pic, *bodyptr;
@@ -138,7 +139,6 @@
      BODY chunk was found or dataptr ran over end of file */
 
   while ((rv<0) && (dataptr < (databuf + filesize))) {
-    int npixels = 0;
     chunkLen = (iff_getlong(dataptr + 4) + 1) & 0xfffffffe; /* make even */
 
     if (strncmp((char *) dataptr, "BMHD", (size_t) 4)==0) { /* BMHD chunk? */

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