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/*
* Copyright 2003-2016 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.
*/
/*
* Glue functions for controlling the audio outputs over the MPD
* protocol. These functions perform extra validation on all
* parameters, because they might be from an untrusted source.
*
*/
#include "config.h"
#include "OutputCommand.hxx"
#include "MultipleOutputs.hxx"
#include "Internal.hxx"
#include "player/Control.hxx"
#include "mixer/MixerControl.hxx"
#include "mixer/Volume.hxx"
#include "Idle.hxx"
extern unsigned audio_output_state_version;
bool
audio_output_enable_index(MultipleOutputs &outputs, unsigned idx)
{
if (idx >= outputs.Size())
return false;
AudioOutput &ao = outputs.Get(idx);
if (ao.enabled)
return true;
ao.enabled = true;
idle_add(IDLE_OUTPUT);
if (ao.mixer != nullptr) {
InvalidateHardwareVolume();
idle_add(IDLE_MIXER);
}
ao.player_control->LockUpdateAudio();
++audio_output_state_version;
return true;
}
bool
audio_output_disable_index(MultipleOutputs &outputs, unsigned idx)
{
if (idx >= outputs.Size())
return false;
AudioOutput &ao = outputs.Get(idx);
if (!ao.enabled)
return true;
ao.enabled = false;
idle_add(IDLE_OUTPUT);
Mixer *mixer = ao.mixer;
if (mixer != nullptr) {
mixer_close(mixer);
InvalidateHardwareVolume();
idle_add(IDLE_MIXER);
}
ao.player_control->LockUpdateAudio();
++audio_output_state_version;
return true;
}
bool
audio_output_toggle_index(MultipleOutputs &outputs, unsigned idx)
{
if (idx >= outputs.Size())
return false;
AudioOutput &ao = outputs.Get(idx);
const bool enabled = ao.enabled = !ao.enabled;
idle_add(IDLE_OUTPUT);
if (!enabled) {
Mixer *mixer = ao.mixer;
if (mixer != nullptr) {
mixer_close(mixer);
InvalidateHardwareVolume();
idle_add(IDLE_MIXER);
}
}
ao.player_control->LockUpdateAudio();
++audio_output_state_version;
return true;
}
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