AVAudioFifo Struct Reference

Context for an Audio FIFO Buffer. More...

Data Fields

AVFifo ** buf

single buffer for interleaved, per-channel buffers for planar

int nb_buffers

number of buffers

int nb_samples

number of samples currently in the FIFO

int allocated_samples

current allocated size, in samples

int channels

number of channels

enum AVSampleFormat sample_fmt

sample format

int sample_size

size, in bytes, of one sample in a buffer

Detailed Description

Context for an Audio FIFO Buffer.

Operates at the sample level rather than the byte level.
Supports multiple channels with either planar or packed sample format.
Automatic reallocation when writing to a full buffer.

Examples: transcode_aac.c.

Definition at line 37 of file audio_fifo.c.

Field Documentation

◆ buf

AVFifo** AVAudioFifo::buf

single buffer for interleaved, per-channel buffers for planar

Definition at line 38 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_drain(), av_audio_fifo_free(), av_audio_fifo_peek_at(), av_audio_fifo_read(), av_audio_fifo_realloc(), av_audio_fifo_reset(), and av_audio_fifo_write().

◆ nb_buffers

int AVAudioFifo::nb_buffers

number of buffers

Definition at line 39 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_drain(), av_audio_fifo_free(), av_audio_fifo_peek_at(), av_audio_fifo_read(), av_audio_fifo_realloc(), av_audio_fifo_reset(), av_audio_fifo_write(), free_data_planes(), read_samples_from_audio_fifo(), and write_samples_to_audio_fifo().

◆ nb_samples

int AVAudioFifo::nb_samples

number of samples currently in the FIFO

Definition at line 40 of file audio_fifo.c.

Referenced by av_audio_fifo_drain(), av_audio_fifo_peek_at(), av_audio_fifo_read(), av_audio_fifo_reset(), av_audio_fifo_size(), av_audio_fifo_space(), av_audio_fifo_write(), read_samples_from_audio_fifo(), and test_function().

◆ allocated_samples

int AVAudioFifo::allocated_samples

current allocated size, in samples

Definition at line 41 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_realloc(), and av_audio_fifo_space().

◆ channels

int AVAudioFifo::channels

number of channels

Definition at line 43 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_realloc(), and read_samples_from_audio_fifo().

◆ sample_fmt

enum AVSampleFormat AVAudioFifo::sample_fmt

sample format

Definition at line 44 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_realloc(), and read_samples_from_audio_fifo().

◆ sample_size

int AVAudioFifo::sample_size

size, in bytes, of one sample in a buffer

Definition at line 45 of file audio_fifo.c.

Referenced by av_audio_fifo_alloc(), av_audio_fifo_drain(), av_audio_fifo_peek_at(), av_audio_fifo_read(), av_audio_fifo_write(), read_samples_from_audio_fifo(), and write_samples_to_audio_fifo().

The documentation for this struct was generated from the following file:

libavutil/audio_fifo.c

Generated on Sun Sep 6 2026 19:21:24 for FFmpeg by doxygen 1.13.2