103 lines
2.0 KiB
C++
103 lines
2.0 KiB
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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/*
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* Glue functions for controlling the audio outputs over the MPD
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* protocol. These functions perform extra validation on all
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* parameters, because they might be from an untrusted source.
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*
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*/
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#include "OutputCommand.hxx"
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#include "MultipleOutputs.hxx"
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#include "Client.hxx"
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#include "mixer/Mixer.hxx"
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#include "mixer/Memento.hxx"
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#include "mixer/Listener.hxx"
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#include "Idle.hxx"
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extern unsigned audio_output_state_version;
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bool
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audio_output_enable_index(MultipleOutputs &outputs,
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MixerMemento &mixer_memento,
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unsigned idx)
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{
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if (idx >= outputs.Size())
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return false;
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auto &ao = outputs.Get(idx);
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if (!ao.LockSetEnabled(true))
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return true;
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idle_add(IDLE_OUTPUT);
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auto *mixer = ao.GetMixer();
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if (mixer != nullptr) {
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mixer_memento.InvalidateHardwareVolume();
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mixer->listener.OnMixerChanged();
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}
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ao.GetClient().ApplyEnabled();
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++audio_output_state_version;
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return true;
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}
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bool
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audio_output_disable_index(MultipleOutputs &outputs,
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MixerMemento &mixer_memento,
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unsigned idx)
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{
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if (idx >= outputs.Size())
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return false;
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auto &ao = outputs.Get(idx);
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if (!ao.LockSetEnabled(false))
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return true;
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idle_add(IDLE_OUTPUT);
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auto *mixer = ao.GetMixer();
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if (mixer != nullptr) {
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mixer->LockClose();
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mixer_memento.InvalidateHardwareVolume();
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mixer->listener.OnMixerChanged();
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}
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ao.GetClient().ApplyEnabled();
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++audio_output_state_version;
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return true;
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}
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bool
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audio_output_toggle_index(MultipleOutputs &outputs,
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MixerMemento &mixer_memento,
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unsigned idx)
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{
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if (idx >= outputs.Size())
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return false;
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auto &ao = outputs.Get(idx);
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const bool enabled = ao.LockToggleEnabled();
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idle_add(IDLE_OUTPUT);
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if (!enabled) {
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auto *mixer = ao.GetMixer();
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if (mixer != nullptr) {
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mixer->LockClose();
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mixer_memento.InvalidateHardwareVolume();
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mixer->listener.OnMixerChanged();
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}
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}
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ao.GetClient().ApplyEnabled();
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++audio_output_state_version;
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return true;
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}
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