File 0042-alsamixer-increase-step-size-for-big-contr... of Package alsa-utils

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File 0042-alsamixer-increase-step-size-for-big-control-value-r.patch of Package alsa-utils (Revision cf464fa930748ad0ece134853c049bb2)

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From 70a01748d594ef57a1962e4cb012927faf6d852f Mon Sep 17 00:00:00 2001
From: Clemens Ladisch <clemens@ladisch.de>
Date: Mon, 6 Dec 2010 14:05:10 +0100
Subject: [PATCH 42/43] alsamixer: increase step size for big control value ranges

For controls with a big range, stepping through all values can become
tedious and make it impossible to adjust the volume easily.  Therefore,
ensure that all steps are big enough so that the full range has at most
one hundred steps.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
---
 alsamixer/mixer_widget.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/alsamixer/mixer_widget.c b/alsamixer/mixer_widget.c
index c8ca156..adb4568 100644
--- a/alsamixer/mixer_widget.c
+++ b/alsamixer/mixer_widget.c
@@ -318,7 +318,7 @@ static void change_volume_to_percent(struct control *control, int value, unsigne
 		set_func(control->elem, control->volume_channels[1], min + (max - min) * value / 100);
 }
 
-static void change_volume_relative(struct control *control, int delta, unsigned int channels)
+static void change_volume_relative(struct control *control, long delta, unsigned int channels)
 {
 	int (*get_range_func)(snd_mixer_elem_t *, long *, long *);
 	int (*get_func)(snd_mixer_elem_t *, snd_mixer_selem_channel_id_t, long *);
@@ -352,6 +352,8 @@ static void change_volume_relative(struct control *control, int delta, unsigned
 		if (err < 0)
 			return;
 	}
+	if (max - min > 100)
+		delta = (delta * (max - min) + (delta > 0 ? 99 : -99)) / 100;
 	if (channels & LEFT) {
 		value = left + delta;
 		if (value < min)
-- 
1.7.3.1

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File 0042-alsamixer-increase-step-size-for-big-control-value-r.patch of Package alsa-utils (Revision cf464fa930748ad0ece134853c049bb2)

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