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/*
* Copyright (C) 2003-2014 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 "output/MultipleOutputs.hxx"
#include "MixerControl.hxx"
#include "MixerInternal.hxx"
#include "MixerList.hxx"
#include "output/OutputInternal.hxx"
#include "pcm/Volume.hxx"
#include "util/Error.hxx"
#include "util/Domain.hxx"
#include "Log.hxx"
#include <assert.h>
static constexpr Domain mixer_domain("mixer");
static int
output_mixer_get_volume(const audio_output &ao)
{
if (!ao.enabled)
return -1;
Mixer *mixer = ao.mixer;
if (mixer == nullptr)
return -1;
Error error;
int volume = mixer_get_volume(mixer, error);
if (volume < 0 && error.IsDefined())
FormatError(error,
"Failed to read mixer for '%s'",
ao.name);
return volume;
}
int
MultipleOutputs::GetVolume() const
{
unsigned ok = 0;
int total = 0;
for (auto ao : outputs) {
int volume = output_mixer_get_volume(*ao);
if (volume >= 0) {
total += volume;
++ok;
}
}
if (ok == 0)
return -1;
return total / ok;
}
static bool
output_mixer_set_volume(audio_output &ao, unsigned volume)
{
assert(volume <= 100);
if (!ao.enabled)
return false;
Mixer *mixer = ao.mixer;
if (mixer == nullptr)
return false;
Error error;
bool success = mixer_set_volume(mixer, volume, error);
if (!success && error.IsDefined())
FormatError(error,
"Failed to set mixer for '%s'",
ao.name);
return success;
}
bool
MultipleOutputs::SetVolume(unsigned volume)
{
assert(volume <= 100);
bool success = false;
for (auto ao : outputs)
success = output_mixer_set_volume(*ao, volume)
|| success;
return success;
}
static int
output_mixer_get_software_volume(const audio_output &ao)
{
if (!ao.enabled)
return -1;
Mixer *mixer = ao.mixer;
if (mixer == nullptr || !mixer->IsPlugin(software_mixer_plugin))
return -1;
return mixer_get_volume(mixer, IgnoreError());
}
int
MultipleOutputs::GetSoftwareVolume() const
{
unsigned ok = 0;
int total = 0;
for (auto ao : outputs) {
int volume = output_mixer_get_software_volume(*ao);
if (volume >= 0) {
total += volume;
++ok;
}
}
if (ok == 0)
return -1;
return total / ok;
}
void
MultipleOutputs::SetSoftwareVolume(unsigned volume)
{
assert(volume <= PCM_VOLUME_1);
for (auto ao : outputs) {
const auto mixer = ao->mixer;
if (mixer != nullptr &&
mixer->plugin == &software_mixer_plugin)
mixer_set_volume(mixer, volume, IgnoreError());
}
}
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