#include "avassert.h"
#include "common.h"
#include "fifo.h"

Functions
AVFifoBuffer *	av_fifo_alloc (unsigned int size)
	Initialize an AVFifoBuffer.

void	av_fifo_free (AVFifoBuffer *f)
	Free an AVFifoBuffer.

void	av_fifo_reset (AVFifoBuffer *f)
	Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied.

int	av_fifo_size (AVFifoBuffer *f)
	Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from it.

int	av_fifo_space (AVFifoBuffer *f)
	Return the amount of space in bytes in the AVFifoBuffer, that is the amount of data you can write into it.

int	av_fifo_realloc2 (AVFifoBuffer *f, unsigned int new_size)
	Resize an AVFifoBuffer.

int	av_fifo_grow (AVFifoBuffer *f, unsigned int size)
	Enlarge an AVFifoBuffer.

int	av_fifo_generic_write (AVFifoBuffer f, void src, int size, int(func)(void , void *, int))
	Feed data from a user-supplied callback to an AVFifoBuffer.

int	av_fifo_generic_read (AVFifoBuffer f, void dest, int buf_size, void(func)(void , void *, int))
	Feed data from an AVFifoBuffer to a user-supplied callback.

void	av_fifo_drain (AVFifoBuffer *f, int size)
	Discard data from the FIFO.

Function Documentation

AVFifoBuffer* av_fifo_alloc ( unsigned int size )

Initialize an AVFifoBuffer.

Parameters

size of FIFO

Returns: AVFifoBuffer or NULL in case of memory allocation failure

Definition at line 27 of file fifo.c.

Referenced by av_audio_fifo_alloc(), av_fifo_realloc2(), common_init(), dv_init_mux(), ff_audio_interleave_init(), ff_frame_thread_encoder_init(), flac_parse_init(), init(), init_audio(), init_video(), mpeg_mux_init(), oggvorbis_encode_init(), start_jack(), swf_write_header(), and udp_open().

void av_fifo_free ( AVFifoBuffer * f )

Free an AVFifoBuffer.

Parameters

f	AVFifoBuffer to free

Definition at line 40 of file fifo.c.

Referenced by av_audio_fifo_free(), dv_delete_mux(), dv_init_mux(), ff_audio_interleave_close(), ff_frame_thread_encoder_free(), flac_parse_close(), free_pkt_fifo(), mpeg_mux_end(), oggvorbis_encode_close(), swf_write_trailer(), udp_close(), udp_open(), and uninit().

void av_fifo_reset ( AVFifoBuffer * f )

Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied.

Parameters

f	AVFifoBuffer to reset

Definition at line 48 of file fifo.c.

Referenced by av_audio_fifo_reset(), and av_fifo_alloc().

int av_fifo_size ( AVFifoBuffer * f )

Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from it.

Parameters

f	AVFifoBuffer to read from

Returns: size

Definition at line 54 of file fifo.c.

Referenced by add_buffer_ref(), av_buffersink_get_frame_flags(), av_buffersink_poll_frame(), av_buffersrc_add_frame_internal(), av_fifo_drain(), av_fifo_grow(), av_fifo_realloc2(), av_fifo_space(), dv_assemble_frame(), ff_audio_rechunk_interleave(), filter_frame(), find_new_headers(), flac_parse(), flush_fifo(), flush_packet(), free_pkt_fifo(), get_best_header(), interleave_new_audio_packet(), mpeg_mux_end(), mpeg_mux_write_packet(), oggvorbis_encode_frame(), output_packet(), poll_frame(), process_callback(), request_frame(), swf_write_audio(), swf_write_video(), udp_read(), uninit(), worker(), and write_to_fifo().

int av_fifo_space ( AVFifoBuffer * f )

Return the amount of space in bytes in the AVFifoBuffer, that is the amount of data you can write into it.

Parameters

f	AVFifoBuffer to write into

Returns: size

Definition at line 59 of file fifo.c.

Referenced by add_buffer_ref(), av_buffersrc_add_frame_internal(), flac_parse(), oggvorbis_encode_frame(), process_callback(), supply_new_packets(), and write_to_fifo().

int av_fifo_realloc2	(	AVFifoBuffer *	f,
		unsigned int	size
	)

Resize an AVFifoBuffer.

In case of reallocation failure, the old FIFO is kept unchanged.

Parameters

f	AVFifoBuffer to resize
size	new AVFifoBuffer size in bytes

Returns: <0 for failure, >=0 otherwise

Definition at line 64 of file fifo.c.

Referenced by add_buffer_ref(), av_audio_fifo_realloc(), av_buffersrc_add_frame_internal(), av_fifo_grow(), ff_audio_rechunk_interleave(), flac_parse(), mpeg_mux_write_packet(), and write_to_fifo().

int av_fifo_grow	(	AVFifoBuffer *	f,
		unsigned int	additional_space
	)

Enlarge an AVFifoBuffer.

In case of reallocation failure, the old FIFO is kept unchanged. The new fifo size may be larger than the requested size.

Parameters

f	AVFifoBuffer to resize
additional_space	the amount of space in bytes to allocate in addition to av_fifo_size()

Returns: <0 for failure, >=0 otherwise

Definition at line 84 of file fifo.c.

int av_fifo_generic_write	(	AVFifoBuffer *	f,
		void *	src,
		int	size,
		int()(void , void *, int)	func
	)

Feed data from a user-supplied callback to an AVFifoBuffer.

Parameters

f	AVFifoBuffer to write to
src	data source; non-const since it may be used as a modifiable context by the function defined in func
size	number of bytes to write
func	generic write function; the first parameter is src, the second is dest_buf, the third is dest_buf_size. func must return the number of bytes written to dest_buf, or <= 0 to indicate no more data available to write. If func is NULL, src is interpreted as a simple byte array for source data.

Returns: the number of bytes written to the FIFO

Definition at line 99 of file fifo.c.

Referenced by add_buffer_ref(), av_audio_fifo_write(), av_buffersrc_add_frame_internal(), dv_assemble_frame(), ff_audio_rechunk_interleave(), ff_thread_video_encode_frame(), flac_parse(), mpeg_mux_write_packet(), oggvorbis_encode_frame(), process_callback(), supply_new_packets(), swf_write_audio(), and write_to_fifo().

int av_fifo_generic_read	(	AVFifoBuffer *	f,
		void *	dest,
		int	buf_size,
		void()(void , void *, int)	func
	)

Feed data from an AVFifoBuffer to a user-supplied callback.

Parameters

f	AVFifoBuffer to read from
buf_size	number of bytes to read
func	generic read function
dest	data destination

Definition at line 127 of file fifo.c.

Referenced by audio_read_packet(), av_audio_fifo_read(), av_buffersink_get_frame_flags(), av_fifo_realloc2(), filter_frame(), flush_fifo(), flush_packet(), free_pkt_fifo(), interleave_new_audio_packet(), oggvorbis_encode_frame(), process_callback(), request_frame(), swf_write_video(), udp_read(), uninit(), and worker().

void av_fifo_drain	(	AVFifoBuffer *	f,
		int	size
	)

Discard data from the FIFO.

Read and discard the specified amount of data from an AVFifoBuffer.

Definition at line 147 of file fifo.c.

Referenced by av_audio_fifo_drain(), av_fifo_generic_read(), dv_assemble_frame(), flac_parse(), and udp_read().

Functions

Function Documentation