Functions
void	av_audio_fifo_free (AVAudioFifo *af)
	Free an AVAudioFifo. More...

AVAudioFifo *	av_audio_fifo_alloc (enum AVSampleFormat sample_fmt, int channels, int nb_samples)
	Allocate an AVAudioFifo. More...

av_warn_unused_result int	av_audio_fifo_realloc (AVAudioFifo *af, int nb_samples)
	Reallocate an AVAudioFifo. More...

int	av_audio_fifo_write (AVAudioFifo af, void *data, int nb_samples)
	Write data to an AVAudioFifo. More...

int	av_audio_fifo_peek (AVAudioFifo af, void *data, int nb_samples)
	Peek data from an AVAudioFifo. More...

int	av_audio_fifo_peek_at (AVAudioFifo af, void *data, int nb_samples, int offset)
	Peek data from an AVAudioFifo. More...

int	av_audio_fifo_read (AVAudioFifo af, void *data, int nb_samples)
	Read data from an AVAudioFifo. More...

int	av_audio_fifo_drain (AVAudioFifo *af, int nb_samples)
	Drain data from an AVAudioFifo. More...

void	av_audio_fifo_reset (AVAudioFifo *af)
	Reset the AVAudioFifo buffer. More...

int	av_audio_fifo_size (AVAudioFifo *af)
	Get the current number of samples in the AVAudioFifo available for reading. More...

int	av_audio_fifo_space (AVAudioFifo *af)
	Get the current number of samples in the AVAudioFifo available for writing. More...

Detailed Description

Function Documentation

◆ av_audio_fifo_free()

void av_audio_fifo_free ( AVAudioFifo * af )

Free an AVAudioFifo.

Parameters

af	AVAudioFifo to free

Definition at line 45 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), avresample_close(), compressor(), config_output(), gate(), main(), opus_decode_close(), test_function(), and uninit().

◆ av_audio_fifo_alloc()

AVAudioFifo* av_audio_fifo_alloc	(	enum AVSampleFormat	sample_fmt,
		int	channels,
		int	nb_samples
	)

Allocate an AVAudioFifo.

Parameters

sample_fmt	sample format
channels	number of channels
nb_samples	initial allocation size, in samples

Returns: newly allocated AVAudioFifo, or NULL on error

Definition at line 59 of file audio_fifo.c.

Referenced by avresample_open(), compressor(), config_input(), config_output(), config_props_output(), gate(), init_fifo(), opus_decode_init(), and test_function().

◆ av_audio_fifo_realloc()

av_warn_unused_result int av_audio_fifo_realloc	(	AVAudioFifo *	af,
		int	nb_samples
	)

Reallocate an AVAudioFifo.

Parameters

af	AVAudioFifo to reallocate
nb_samples	new allocation size, in samples

Returns: 0 if OK, or negative AVERROR code on failure

Definition at line 96 of file audio_fifo.c.

Referenced by add_samples_to_fifo(), av_audio_fifo_write(), and filter_frame().

◆ av_audio_fifo_write()

int av_audio_fifo_write	(	AVAudioFifo *	af,
		void **	data,
		int	nb_samples
	)

Write data to an AVAudioFifo.

The AVAudioFifo will be reallocated automatically if the available space is less than nb_samples.

See also: enum AVSampleFormat The documentation for AVSampleFormat describes the data layout.

Parameters

af	AVAudioFifo to write to
data	audio data plane pointers
nb_samples	number of samples to write

Returns: number of samples actually written, or negative AVERROR code on failure. If successful, the number of samples actually written will always be nb_samples.

Definition at line 112 of file audio_fifo.c.

Referenced by activate(), add_samples_to_fifo(), compressor(), ff_audio_data_add_to_fifo(), filter_frame(), gate(), opus_decode_frame(), opus_decode_packet(), plot_spectrum_column(), read_ir(), request_frame(), and write_samples_to_audio_fifo().

◆ av_audio_fifo_peek()

int av_audio_fifo_peek	(	AVAudioFifo *	af,
		void **	data,
		int	nb_samples
	)

Peek data from an AVAudioFifo.

See also: enum AVSampleFormat The documentation for AVSampleFormat describes the data layout.

Parameters

af	AVAudioFifo to read from
data	audio data plane pointers
nb_samples	number of samples to peek

Returns: number of samples actually peek, or negative AVERROR code on failure. The number of samples actually peek will not be greater than nb_samples, and will only be less than nb_samples if av_audio_fifo_size is less than nb_samples.

Definition at line 138 of file audio_fifo.c.

Referenced by filter_frame(), fir_frame(), plot_spectrum_column(), and test_function().

◆ av_audio_fifo_peek_at()

int av_audio_fifo_peek_at	(	AVAudioFifo *	af,
		void **	data,
		int	nb_samples,
		int	offset
	)

Peek data from an AVAudioFifo.

See also: enum AVSampleFormat The documentation for AVSampleFormat describes the data layout.

Parameters

af	AVAudioFifo to read from
data	audio data plane pointers
nb_samples	number of samples to peek
offset	offset from current read position

Returns: number of samples actually peek, or negative AVERROR code on failure. The number of samples actually peek will not be greater than nb_samples, and will only be less than nb_samples if av_audio_fifo_size is less than nb_samples.

Definition at line 157 of file audio_fifo.c.

Referenced by test_function().

◆ av_audio_fifo_read()

int av_audio_fifo_read	(	AVAudioFifo *	af,
		void **	data,
		int	nb_samples
	)

Read data from an AVAudioFifo.

See also: enum AVSampleFormat The documentation for AVSampleFormat describes the data layout.

Parameters

af	AVAudioFifo to read from
data	audio data plane pointers
nb_samples	number of samples to read

Returns: number of samples actually read, or negative AVERROR code on failure. The number of samples actually read will not be greater than nb_samples, and will only be less than nb_samples if av_audio_fifo_size is less than nb_samples.

Definition at line 181 of file audio_fifo.c.

Referenced by avresample_read(), compressor(), convert_coeffs(), ff_audio_data_read_from_fifo(), gate(), headphone_frame(), load_encode_and_write(), opus_decode_frame(), opus_decode_packet(), opus_flush_resample(), output_frame(), push_samples(), and read_samples_from_audio_fifo().

◆ av_audio_fifo_drain()

int av_audio_fifo_drain	(	AVAudioFifo *	af,
		int	nb_samples
	)

Drain data from an AVAudioFifo.

Removes the data without reading it.

Parameters

af	AVAudioFifo to drain
nb_samples	number of samples to drain

Returns: 0 if OK, or negative AVERROR code on failure

Definition at line 201 of file audio_fifo.c.

Referenced by avresample_read(), filter_frame(), fir_frame(), opus_decode_flush(), opus_decode_frame(), plot_spectrum_column(), request_frame(), and test_function().

◆ av_audio_fifo_reset()

void av_audio_fifo_reset ( AVAudioFifo * af )

Reset the AVAudioFifo buffer.

This empties all data in the buffer.

Parameters

af	AVAudioFifo to reset

Definition at line 218 of file audio_fifo.c.

◆ av_audio_fifo_size()

int av_audio_fifo_size ( AVAudioFifo * af )

Get the current number of samples in the AVAudioFifo available for reading.

Parameters

af	the AVAudioFifo to query

Returns: number of samples available for reading

Definition at line 228 of file audio_fifo.c.

Referenced by activate(), add_samples_to_fifo(), av_audio_fifo_write(), avresample_available(), avresample_convert(), compressor(), convert_coeffs(), filter_frame(), fir_frame(), gate(), handle_buffered_output(), load_encode_and_write(), main(), opus_decode_flush(), opus_decode_frame(), opus_decode_packet(), opus_flush_resample(), output_frame(), plot_spectrum_column(), push_samples(), read_ir(), request_frame(), request_samples(), and test_function().

◆ av_audio_fifo_space()

int av_audio_fifo_space ( AVAudioFifo * af )

Get the current number of samples in the AVAudioFifo available for writing.

Parameters

af	the AVAudioFifo to query

Returns: number of samples available for writing

Definition at line 233 of file audio_fifo.c.

Referenced by av_audio_fifo_write(), and filter_frame().

Functions

Detailed Description

Function Documentation

◆ av_audio_fifo_free()

◆ av_audio_fifo_alloc()

◆ av_audio_fifo_realloc()

◆ av_audio_fifo_write()

◆ av_audio_fifo_peek()

◆ av_audio_fifo_peek_at()

◆ av_audio_fifo_read()

◆ av_audio_fifo_drain()

◆ av_audio_fifo_reset()

◆ av_audio_fifo_size()

◆ av_audio_fifo_space()