Include dependency graph for dec.c:

Functions
int	aout_DecNew (audio_output_t p_aout, const audio_sample_format_t p_format, const audio_replay_gain_t p_replay_gain, const aout_request_vout_t p_request_vout)
	Creates an audio output. More...

void	aout_DecDelete (audio_output_t *aout)
	Stops all plugins involved in the audio output. More...

static int	aout_CheckReady (audio_output_t *aout)

void	aout_RequestRestart (audio_output_t *aout, unsigned mode)
	Marks the audio output for restart, to update any parameter of the output plug-in (e.g. More...

static void	aout_StopResampling (audio_output_t *aout)

static void	aout_DecSilence (audio_output_t *aout, vlc_tick_t length, vlc_tick_t pts)

static void	aout_DecSynchronize (audio_output_t *aout, vlc_tick_t dec_pts, int input_rate)

int	aout_DecPlay (audio_output_t aout, block_t block, int input_rate)

void	aout_DecGetResetStats (audio_output_t aout, unsigned restrict lost, unsigned *restrict played)

void	aout_DecChangePause (audio_output_t *aout, bool paused, vlc_tick_t date)

void	aout_DecFlush (audio_output_t *aout, bool wait)

void	aout_ChangeViewpoint (audio_output_t aout, const vlc_viewpoint_t p_viewpoint)

Function Documentation

◆ aout_ChangeViewpoint()

void aout_ChangeViewpoint	(	audio_output_t *	aout,
		const vlc_viewpoint_t *	p_viewpoint
	)

References aout_owner(), aout_owner_t::lock, aout_owner_t::update, aout_owner_t::value, vlc_mutex_lock(), vlc_mutex_unlock(), and aout_owner_t::vp.

Referenced by ViewpointCallback().

◆ aout_CheckReady()

static int aout_CheckReady ( audio_output_t * aout )

static

◆ aout_DecChangePause()

void aout_DecChangePause	(	audio_output_t *	aout,
		bool	paused,
		vlc_tick_t	date
	)

References aout_OutputLock(), aout_OutputPause(), aout_OutputUnlock(), aout_owner(), aout_owner_t::end, audio_format_t::i_format, aout_owner_t::mixer_format, aout_owner_t::sync, and VLC_TICK_INVALID.

Referenced by DecoderThread().

◆ aout_DecDelete()

void aout_DecDelete ( audio_output_t * aout )

Stops all plugins involved in the audio output.

References aout_FiltersDelete, aout_OutputDelete(), aout_OutputLock(), aout_OutputUnlock(), aout_owner(), aout_volume_Delete(), aout_owner_t::filters, audio_format_t::i_format, aout_owner_t::mixer_format, and aout_owner_t::volume.

Referenced by aout_update_format(), DeleteDecoder(), and ReloadDecoder().

◆ aout_DecFlush()

void aout_DecFlush	(	audio_output_t *	aout,
		bool	wait
	)

References aout_FiltersDrain(), aout_FiltersFlush(), aout_OutputFlush(), aout_OutputLock(), aout_OutputPlay(), aout_OutputUnlock(), aout_owner(), aout_owner_t::end, aout_owner_t::filters, audio_format_t::i_format, aout_owner_t::mixer_format, aout_owner_t::sync, and VLC_TICK_INVALID.

Referenced by DecoderThread(), and DeleteDecoder().

◆ aout_DecGetResetStats()

void aout_DecGetResetStats	(	audio_output_t *	aout,
		unsigned *restrict	lost,
		unsigned *restrict	played
	)

References aout_owner(), aout_owner_t::buffers_lost, and aout_owner_t::buffers_played.

◆ aout_DecNew()

int aout_DecNew	(	audio_output_t *	p_aout,
		const audio_sample_format_t *	p_format,
		const audio_replay_gain_t *	p_replay_gain,
		const aout_request_vout_t *	p_request_vout
	)

Creates an audio output.

References AOUT_CHAN_MAX, AOUT_FILTERS_CFG_INIT, aout_FiltersNew, aout_FormatNbChannels(), aout_OutputDelete(), aout_OutputLock(), aout_OutputNew(), aout_OutputUnlock(), aout_owner(), AOUT_RESAMPLING_NONE, aout_volume_Delete(), aout_volume_New, aout_volume_SetFormat(), aout_owner_t::buffers_lost, aout_owner_t::buffers_played, aout_owner_t::discontinuity, aout_owner_t::end, aout_owner_t::filters, aout_owner_t::filters_cfg, audio_format_t::i_bitspersample, audio_format_t::i_channels, audio_format_t::i_format, audio_format_t::i_rate, aout_owner_t::initial_stereo_mode, INPUT_CHAN_MAX, aout_owner_t::input_format, aout_owner_t::mixer_format, msg_Err, aout_owner_t::request_vout, aout_owner_t::resamp_type, aout_owner_t::restart, aout_owner_t::sync, aout_owner_t::update, var_Change, VLC_TICK_INVALID, VLC_VAR_SETVALUE, aout_owner_t::volume, and aout_owner_t::vp.

Referenced by aout_update_format().

◆ aout_DecPlay()

int aout_DecPlay	(	audio_output_t *	aout,
		block_t *	block,
		int	input_rate
	)

< Unspecified error

References aout_CheckReady(), AOUT_DEC_FAILED, aout_DecSynchronize(), aout_FiltersChangeViewpoint(), aout_FiltersPlay(), AOUT_MAX_ADVANCE_TIME, AOUT_MAX_INPUT_RATE, AOUT_MAX_PTS_DELAY, aout_OutputLock(), aout_OutputPlay(), aout_OutputUnlock(), aout_owner(), aout_volume_Amplify(), BLOCK_FLAG_DISCONTINUITY, block_Release(), aout_owner_t::buffers_lost, aout_owner_t::buffers_played, CLOCK_FREQ, aout_owner_t::discontinuity, aout_owner_t::end, aout_owner_t::filters, block_t::i_flags, block_t::i_length, block_t::i_nb_samples, block_t::i_pts, audio_format_t::i_rate, aout_owner_t::input_format, INPUT_RATE_DEFAULT, aout_owner_t::lock, mdate(), msg_Err, msg_Warn, aout_owner_t::sync, unlikely, aout_owner_t::update, aout_owner_t::value, vlc_mutex_lock(), vlc_mutex_unlock(), VLC_TICK_0, aout_owner_t::volume, and aout_owner_t::vp.

◆ aout_DecSilence()

static void aout_DecSilence	(	audio_output_t *	aout,
		vlc_tick_t	length,
		vlc_tick_t	pts
	)

static

References aout_OutputPlay(), aout_owner(), block_Alloc(), CLOCK_FREQ, block_t::i_buffer, audio_format_t::i_bytes_per_frame, block_t::i_dts, audio_format_t::i_frame_length, block_t::i_length, block_t::i_nb_samples, block_t::i_pts, audio_format_t::i_rate, aout_owner_t::mixer_format, msg_Dbg, block_t::p_buffer, and unlikely.

Referenced by aout_DecSynchronize().

◆ aout_DecSynchronize()

static void aout_DecSynchronize	(	audio_output_t *	aout,
		vlc_tick_t	dec_pts,
		int	input_rate
	)

static

Depending on the drift between the actual and intended playback times, the audio core may ignore the drift, trigger upsampling or downsampling, insert silence or even discard samples. Future VLC versions may instead adjust the input rate.

The audio output plugin is responsible for estimating its actual playback time, or rather the estimated time when the next sample will be played. (The actual playback time is always the current time, that is to say mdate(). It is not an useful statistic.)

Most audio output plugins can estimate the delay until playback of the next sample to be written to the buffer, or equally the time until all samples in the buffer will have been played. Then: pts = mdate() + delay

References aout_DecSilence(), aout_FiltersAdjustResampling(), aout_FiltersCanResample(), AOUT_MAX_PTS_ADVANCE, AOUT_MAX_PTS_DELAY, aout_OutputFlush(), aout_OutputTimeGet(), aout_owner(), AOUT_RESAMPLING_DOWN, AOUT_RESAMPLING_NONE, AOUT_RESAMPLING_UP, aout_StopResampling(), aout_owner_t::discontinuity, aout_owner_t::end, aout_owner_t::filters, INPUT_RATE_DEFAULT, mdate(), msg_Dbg, msg_Warn, aout_owner_t::resamp_start_drift, aout_owner_t::resamp_type, aout_owner_t::sync, and VLC_TICK_INVALID.