5b82ffc291
After we've been hit by Large File Support problems several times in the past week (which only occur on 32 bit platforms, which I don't have), this is yet another attempt to fix the issue.
182 lines
3.7 KiB
C
182 lines
3.7 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "mixer_all.h"
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#include "mixer_control.h"
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#include "output_all.h"
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#include "output_plugin.h"
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#include "output_internal.h"
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#include "pcm_volume.h"
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#include "mixer_api.h"
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#include "mixer_list.h"
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#include <glib.h>
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#include <assert.h>
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#undef G_LOG_DOMAIN
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#define G_LOG_DOMAIN "mixer"
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static int
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output_mixer_get_volume(unsigned i)
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{
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struct audio_output *output;
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struct mixer *mixer;
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int volume;
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GError *error = NULL;
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assert(i < audio_output_count());
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output = audio_output_get(i);
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if (!output->enabled)
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return -1;
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mixer = output->mixer;
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if (mixer == NULL)
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return -1;
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volume = mixer_get_volume(mixer, &error);
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if (volume < 0 && error != NULL) {
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g_warning("Failed to read mixer for '%s': %s",
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output->name, error->message);
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g_error_free(error);
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}
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return volume;
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}
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int
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mixer_all_get_volume(void)
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{
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unsigned count = audio_output_count(), ok = 0;
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int volume, total = 0;
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for (unsigned i = 0; i < count; i++) {
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volume = output_mixer_get_volume(i);
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if (volume >= 0) {
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total += volume;
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++ok;
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}
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}
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if (ok == 0)
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return -1;
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return total / ok;
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}
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static bool
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output_mixer_set_volume(unsigned i, unsigned volume)
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{
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struct audio_output *output;
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struct mixer *mixer;
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bool success;
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GError *error = NULL;
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assert(i < audio_output_count());
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assert(volume <= 100);
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output = audio_output_get(i);
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if (!output->enabled)
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return false;
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mixer = output->mixer;
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if (mixer == NULL)
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return false;
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success = mixer_set_volume(mixer, volume, &error);
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if (!success && error != NULL) {
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g_warning("Failed to set mixer for '%s': %s",
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output->name, error->message);
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g_error_free(error);
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}
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return success;
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}
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bool
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mixer_all_set_volume(unsigned volume)
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{
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bool success = false;
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unsigned count = audio_output_count();
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assert(volume <= 100);
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for (unsigned i = 0; i < count; i++)
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success = output_mixer_set_volume(i, volume)
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|| success;
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return success;
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}
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static int
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output_mixer_get_software_volume(unsigned i)
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{
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struct audio_output *output;
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struct mixer *mixer;
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assert(i < audio_output_count());
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output = audio_output_get(i);
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if (!output->enabled)
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return -1;
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mixer = output->mixer;
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if (mixer == NULL || mixer->plugin != &software_mixer_plugin)
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return -1;
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return mixer_get_volume(mixer, NULL);
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}
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int
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mixer_all_get_software_volume(void)
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{
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unsigned count = audio_output_count(), ok = 0;
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int volume, total = 0;
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for (unsigned i = 0; i < count; i++) {
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volume = output_mixer_get_software_volume(i);
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if (volume >= 0) {
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total += volume;
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++ok;
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}
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}
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if (ok == 0)
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return -1;
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return total / ok;
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}
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void
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mixer_all_set_software_volume(unsigned volume)
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{
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unsigned count = audio_output_count();
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assert(volume <= PCM_VOLUME_1);
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for (unsigned i = 0; i < count; i++) {
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struct audio_output *output = audio_output_get(i);
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if (output->mixer != NULL &&
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output->mixer->plugin == &software_mixer_plugin)
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mixer_set_volume(output->mixer, volume, NULL);
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}
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}
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