class AudioOutput
Defined at line 28 of file ../../src/media/audio/audio_core/audio_output.h
Public Methods
void ~AudioOutput ()Defined at line 30 of file ../../src/media/audio/audio_core/audio_output.h
OutputPipeline * output_pipeline ()Defined at line 39 of file ../../src/media/audio/audio_core/audio_output.h
fpromise::promise<void, fuchsia::media::audio::UpdateEffectError> UpdateEffect (const std::string & instance_name, const std::string & config)Defined at line 239 of file ../../src/media/audio/audio_core/audio_output.cc
fpromise::promise<void, zx_status_t> UpdateDeviceProfile (const DeviceConfig::OutputDeviceProfile::Parameters & params)Replace the existing DeviceProfile and restart the OutputPipeline, for tuning purposes.
Defined at line 254 of file ../../src/media/audio/audio_core/audio_output.cc
void SetGainInfo (const fuchsia::media::AudioGainInfo & info, fuchsia::media::AudioGainValidFlags set_flags)|media::audio::AudioDevice|
Defined at line 282 of file ../../src/media/audio/audio_core/audio_output.cc
Protected Methods
void AudioOutput (const std::string & name, const DeviceConfig & config, ThreadingModel * threading_model, DeviceRegistry * registry, LinkMatrix * link_matrix, std::shared_ptr<AudioCoreClockFactory> clock_factory, EffectsLoaderV2 * effects_loader_v2, std::unique_ptr<AudioDriver> )TODO(https://fxbug.dev/42126303): We should not need driver to be set for all Audio Devices.
Defined at line 35 of file ../../src/media/audio/audio_core/audio_output.cc
std::optional<Reporter::Container<Reporter::OutputDevice, Reporter::kObjectsToCache>::Ptr> & reporter ()Defined at line 51 of file ../../src/media/audio/audio_core/audio_output.h
EffectsLoaderV2 * effects_loader_v2 ()Defined at line 55 of file ../../src/media/audio/audio_core/audio_output.h
void SetNextSchedTimeMono (zx::time next_sched_time_mono)Mark this output as needing to be mixed at the specified future time.
async PostForTime requires a time in the CLOCK_MONOTONIC timebase, so we use that here.
Defined at line 70 of file ../../src/media/audio/audio_core/audio_output.h
void ClearNextSchedTime ()Defined at line 74 of file ../../src/media/audio/audio_core/audio_output.h
fpromise::result<std::pair<std::shared_ptr<Mixer>, ExecutionDomain *>, zx_status_t> InitializeSourceLink (const AudioObject & source, std::shared_ptr<ReadableStream> stream)|media::audio::AudioObject|
If we're initializing a source link, then we're connecting a renderer to this output. Else
if we're initializing a dest link, then we're being connected as a loopback so we should return
our loopback stream.
Defined at line 165 of file ../../src/media/audio/audio_core/audio_output.cc
void CleanupSourceLink (const AudioObject & source, std::shared_ptr<ReadableStream> stream)Defined at line 188 of file ../../src/media/audio/audio_core/audio_output.cc
fpromise::result<std::shared_ptr<ReadableStream>, zx_status_t> InitializeDestLink (const AudioObject & dest)Defined at line 196 of file ../../src/media/audio/audio_core/audio_output.cc
void SetupMixTask (const DeviceConfig::OutputDeviceProfile & profile, size_t max_block_size_frames, TimelineFunction device_reference_clock_to_fractional_frame)Defined at line 218 of file ../../src/media/audio/audio_core/audio_output.cc
std::shared_ptr<OutputPipeline> CreateOutputPipeline (const PipelineConfig & config, const VolumeCurve & volume_curve, size_t max_block_size_frames, TimelineFunction device_reference_clock_to_fractional_frame, std::shared_ptr<Clock> ref_clock)Defined at line 208 of file ../../src/media/audio/audio_core/audio_output.cc
void Cleanup ()Defined at line 234 of file ../../src/media/audio/audio_core/audio_output.cc
void Process ()Defined at line 46 of file ../../src/media/audio/audio_core/audio_output.cc
void ProcessMixJob (ReadableStream::ReadLockContext & ctx, FrameSpan mix_span)Defined at line 129 of file ../../src/media/audio/audio_core/audio_output.cc
std::optional<AudioOutput::FrameSpan> StartMixJob (zx::time device_ref_time)Start mixing frames for a periodic mix job. This is called internally during the periodic mix
task for this output. Implementations can control mix behavior in the following ways:
If |std::nullopt| is returned, then no frames will be mixed. Instead all inputs will be trimmed
such that any client audio packets that would have been fully consumed by the end of this mix
job will be released. There will be no call to |FinishMixJob|.
If the returned optional contains a FrameSpan with |is_mute| set to true, then no frames will
be mixed. Instead all inputs will be trimmed such that any client audio packets that would have
been fully consumed by the end of this mix job will be released. |WriteMixOutput| will be
called to write silence. |FinishMixJob| will be called with the returned FrameSpan.
If the returned optional contains a FrameSpan with |is_mute| set to false, then the mix
pipeline will be advanced by the requested frame region. |WriteMixOutput| will be called one
or more times to write the mixed output. |FinishMixJob| will be called with the returned
FrameSpan.
void WriteMixOutput (int64_t start, int64_t length, const float * payload)Writes frames in the given region. The start and end will intersect the FrameSpan returned from
a prior |StartMixJob|. Write the given |payload|, or silence if |payload| is nullptr.
void FinishMixJob (const AudioOutput::FrameSpan & span)This is called at the end of a mix job to update internal state. |span| is the same span
returned by the last call to StartMixJob.
zx::duration MixDeadline ()The maximum amount of time it can take to run all pending mix jobs when a device
wakes up to process pending jobs.