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/*
* Copyright (C) 2003-2009 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "mixer_all.h"
#include "mixer_control.h"
#include "output_all.h"
#include "output_plugin.h"
#include "output_internal.h"
#include <glib.h>
#include <assert.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "mixer"
static int
output_mixer_get_volume(unsigned i)
{
struct audio_output *output;
struct mixer *mixer;
assert(i < audio_output_count());
output = audio_output_get(i);
if (!output->enabled)
return -1;
mixer = output->mixer;
if (mixer == NULL)
return -1;
return mixer_get_volume(mixer);
}
int
mixer_all_get_volume(void)
{
unsigned count = audio_output_count(), ok = 0;
int volume, total = 0;
for (unsigned i = 0; i < count; i++) {
volume = output_mixer_get_volume(i);
if (volume >= 0) {
total += volume;
++ok;
}
}
if (ok == 0)
return -1;
return total / ok;
}
static bool
output_mixer_set_volume(unsigned i, int volume, bool relative)
{
struct audio_output *output;
struct mixer *mixer;
assert(i < audio_output_count());
output = audio_output_get(i);
if (!output->enabled)
return false;
mixer = output->mixer;
if (mixer == NULL)
return false;
if (relative) {
int prev = mixer_get_volume(mixer);
if (prev < 0)
return false;
volume += prev;
}
if (volume > 100)
volume = 100;
else if (volume < 0)
volume = 0;
return mixer_set_volume(mixer, volume);
}
bool
mixer_all_set_volume(int volume, bool relative)
{
bool success = false;
unsigned count = audio_output_count();
for (unsigned i = 0; i < count; i++)
success = output_mixer_set_volume(i, volume, relative)
|| success;
return success;
}
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