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Diffstat (limited to '')
| -rw-r--r-- | src/MixerAll.cxx | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/MixerAll.cxx b/src/MixerAll.cxx new file mode 100644 index 000000000..00343a1a0 --- /dev/null +++ b/src/MixerAll.cxx @@ -0,0 +1,183 @@ +/* + * Copyright (C) 2003-2013 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 "config.h" +#include "MixerAll.hxx" +#include "MixerControl.hxx" +#include "MixerInternal.hxx" +#include "MixerList.hxx" +#include "OutputAll.hxx" +#include "PcmVolume.hxx" + +extern "C" { +#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; + int volume; + GError *error = NULL; + + assert(i < audio_output_count()); + + output = audio_output_get(i); + if (!output->enabled) + return -1; + + mixer = output->mixer; + if (mixer == NULL) + return -1; + + volume = mixer_get_volume(mixer, &error); + if (volume < 0 && error != NULL) { + g_warning("Failed to read mixer for '%s': %s", + output->name, error->message); + g_error_free(error); + } + + return volume; +} + +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, unsigned volume) +{ + struct audio_output *output; + struct mixer *mixer; + bool success; + GError *error = NULL; + + assert(i < audio_output_count()); + assert(volume <= 100); + + output = audio_output_get(i); + if (!output->enabled) + return false; + + mixer = output->mixer; + if (mixer == NULL) + return false; + + success = mixer_set_volume(mixer, volume, &error); + if (!success && error != NULL) { + g_warning("Failed to set mixer for '%s': %s", + output->name, error->message); + g_error_free(error); + } + + return success; +} + +bool +mixer_all_set_volume(unsigned volume) +{ + bool success = false; + unsigned count = audio_output_count(); + + assert(volume <= 100); + + for (unsigned i = 0; i < count; i++) + success = output_mixer_set_volume(i, volume) + || success; + + return success; +} + +static int +output_mixer_get_software_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 || mixer->plugin != &software_mixer_plugin) + return -1; + + return mixer_get_volume(mixer, NULL); +} + +int +mixer_all_get_software_volume(void) +{ + unsigned count = audio_output_count(), ok = 0; + int volume, total = 0; + + for (unsigned i = 0; i < count; i++) { + volume = output_mixer_get_software_volume(i); + if (volume >= 0) { + total += volume; + ++ok; + } + } + + if (ok == 0) + return -1; + + return total / ok; +} + +void +mixer_all_set_software_volume(unsigned volume) +{ + unsigned count = audio_output_count(); + + assert(volume <= PCM_VOLUME_1); + + for (unsigned i = 0; i < count; i++) { + struct audio_output *output = audio_output_get(i); + if (output->mixer != NULL && + output->mixer->plugin == &software_mixer_plugin) + mixer_set_volume(output->mixer, volume, NULL); + } +} |