4cb5e69811
This allows interrupting the output thread (for some plugins which implement this method). This way, operations can be canceled properly, instead of waiting for some external entity.
209 lines
4.3 KiB
C++
209 lines
4.3 KiB
C++
/*
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* Copyright 2003-2020 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 "Filtered.hxx"
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#include "Interface.hxx"
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#include "Domain.hxx"
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#include "Log.hxx"
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#include "mixer/MixerInternal.hxx"
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#include "mixer/plugins/SoftwareMixerPlugin.hxx"
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#include "filter/plugins/ConvertFilterPlugin.hxx"
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#include "util/RuntimeError.hxx"
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#include "util/StringBuffer.hxx"
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bool
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FilteredAudioOutput::SupportsEnableDisable() const noexcept
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{
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return output->SupportsEnableDisable();
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}
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bool
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FilteredAudioOutput::SupportsPause() const noexcept
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{
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return output->SupportsPause();
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}
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std::map<std::string, std::string>
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FilteredAudioOutput::GetAttributes() const noexcept
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{
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return output->GetAttributes();
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}
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void
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FilteredAudioOutput::SetAttribute(std::string &&_name, std::string &&_value)
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{
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output->SetAttribute(std::move(_name), std::move(_value));
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}
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void
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FilteredAudioOutput::Enable()
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{
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try {
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output->Enable();
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Failed to enable output %s",
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GetLogName()));
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}
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}
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void
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FilteredAudioOutput::Disable() noexcept
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{
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output->Disable();
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}
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void
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FilteredAudioOutput::ConfigureConvertFilter()
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{
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try {
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convert_filter_set(convert_filter.Get(), out_audio_format);
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Failed to convert for %s",
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GetLogName()));
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}
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}
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void
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FilteredAudioOutput::OpenOutputAndConvert(AudioFormat desired_audio_format)
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{
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out_audio_format = desired_audio_format;
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try {
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output->Open(out_audio_format);
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} catch (...) {
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std::throw_with_nested(FormatRuntimeError("Failed to open %s",
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GetLogName()));
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}
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FormatDebug(output_domain,
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"opened %s audio_format=%s",
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GetLogName(),
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ToString(out_audio_format).c_str());
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try {
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ConfigureConvertFilter();
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} catch (...) {
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output->Close();
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if (out_audio_format.format == SampleFormat::DSD) {
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/* if the audio output supports DSD, but not
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the given sample rate, it asks MPD to
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resample; resampling DSD however is not
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implemented; our last resort is to give up
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DSD and fall back to PCM */
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LogError(std::current_exception());
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FormatError(output_domain, "Retrying without DSD");
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desired_audio_format.format = SampleFormat::FLOAT;
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OpenOutputAndConvert(desired_audio_format);
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return;
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}
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throw;
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}
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}
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void
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FilteredAudioOutput::CloseOutput(bool drain) noexcept
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{
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if (drain) {
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try {
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Drain();
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} catch (...) {
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FormatError(std::current_exception(),
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"Failed to drain %s", GetLogName());
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}
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} else
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Cancel();
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output->Close();
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}
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void
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FilteredAudioOutput::OpenSoftwareMixer() noexcept
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{
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if (mixer != nullptr && mixer->IsPlugin(software_mixer_plugin))
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software_mixer_set_filter(*mixer, volume_filter.Get());
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}
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void
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FilteredAudioOutput::CloseSoftwareMixer() noexcept
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{
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if (mixer != nullptr && mixer->IsPlugin(software_mixer_plugin))
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software_mixer_set_filter(*mixer, nullptr);
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}
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void
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FilteredAudioOutput::Close(bool drain) noexcept
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{
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CloseOutput(drain);
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CloseSoftwareMixer();
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FormatDebug(output_domain, "closed %s", GetLogName());
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}
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std::chrono::steady_clock::duration
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FilteredAudioOutput::Delay() noexcept
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{
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return output->Delay();
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}
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void
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FilteredAudioOutput::SendTag(const Tag &tag)
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{
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output->SendTag(tag);
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}
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size_t
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FilteredAudioOutput::Play(const void *data, size_t size)
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{
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return output->Play(data, size);
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}
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void
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FilteredAudioOutput::Drain()
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{
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output->Drain();
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}
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void
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FilteredAudioOutput::Interrupt() noexcept
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{
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output->Interrupt();
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}
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void
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FilteredAudioOutput::Cancel() noexcept
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{
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output->Cancel();
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}
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void
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FilteredAudioOutput::BeginPause() noexcept
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{
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Cancel();
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}
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bool
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FilteredAudioOutput::IteratePause()
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{
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return output->Pause();
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}
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