muxing functions for use within Libav More...

#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "libavcodec/internal.h"
#include "libavcodec/bytestream.h"
#include "libavutil/opt.h"
#include "libavutil/dict.h"
#include "libavutil/pixdesc.h"
#include "metadata.h"
#include "id3v2.h"
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/parseutils.h"
#include "libavutil/time.h"
#include "riff.h"
#include "audiointerleave.h"
#include "url.h"
#include <stdarg.h>
#include <assert.h>

Functions
static int	validate_codec_tag (AVFormatContext s, AVStream st)

static int	init_muxer (AVFormatContext s, AVDictionary *options)

int	avformat_write_header (AVFormatContext s, AVDictionary *options)
	Allocate the stream private data and write the stream header to an output media file. More...

static int	compute_pkt_fields2 (AVFormatContext s, AVStream st, AVPacket *pkt)

static int	write_packet (AVFormatContext s, AVPacket pkt)

static int	check_packet (AVFormatContext s, AVPacket pkt)

int	av_write_frame (AVFormatContext s, AVPacket pkt)
	Write a packet to an output media file. More...

int	ff_interleave_add_packet (AVFormatContext s, AVPacket pkt, int(compare)(AVFormatContext , AVPacket , AVPacket ))
	Add packet to AVFormatContext->packet_buffer list, determining its interleaved position using compare() function argument. More...

static int	interleave_compare_dts (AVFormatContext s, AVPacket next, AVPacket *pkt)

int	ff_interleave_packet_per_dts (AVFormatContext s, AVPacket out, AVPacket *pkt, int flush)
	Interleave a packet per dts in an output media file. More...

static int	interleave_packet (AVFormatContext s, AVPacket out, AVPacket *in, int flush)
	Interleave an AVPacket correctly so it can be muxed. More...

int	av_interleaved_write_frame (AVFormatContext s, AVPacket pkt)
	Write a packet to an output media file ensuring correct interleaving. More...

int	av_write_trailer (AVFormatContext *s)
	Write the stream trailer to an output media file and free the file private data. More...

int	ff_write_chained (AVFormatContext dst, int dst_stream, AVPacket pkt, AVFormatContext *src)
	Write a packet to another muxer than the one the user originally intended. More...

Detailed Description

muxing functions for use within Libav

Definition in file mux.c.

Function Documentation

static int validate_codec_tag	(	AVFormatContext *	s,
		AVStream *	st
	)

static

Check that tag + id is in the table If neither is in the table -> OK If tag is in the table with another id -> FAIL If id is in the table with another tag -> FAIL unless strict < normal

Definition at line 54 of file mux.c.

Referenced by init_muxer().

static int init_muxer	(	AVFormatContext *	s,
		AVDictionary **	options
	)

static

Definition at line 88 of file mux.c.

Referenced by avformat_write_header().

static int compute_pkt_fields2	(	AVFormatContext *	s,
		AVStream *	st,
		AVPacket *	pkt
	)

static

Definition at line 255 of file mux.c.

Referenced by av_interleaved_write_frame(), and av_write_frame().

static int write_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 315 of file mux.c.

Referenced by av_interleaved_write_frame(), av_write_frame(), and av_write_trailer().

static int check_packet	(	AVFormatContext *	s,
		AVPacket *	pkt
	)

static

Definition at line 342 of file mux.c.

Referenced by av_interleaved_write_frame(), and av_write_frame().

int ff_interleave_add_packet	(	AVFormatContext *	s,
		AVPacket *	pkt,
		int()(AVFormatContext , AVPacket , AVPacket )	compare
	)

Add packet to AVFormatContext->packet_buffer list, determining its interleaved position using compare() function argument.

Definition at line 387 of file mux.c.

Referenced by ff_audio_rechunk_interleave(), and ff_interleave_packet_per_dts().

static int interleave_compare_dts	(	AVFormatContext *	s,
		AVPacket *	next,
		AVPacket *	pkt
	)

static

Definition at line 436 of file mux.c.

Referenced by ff_interleave_packet_per_dts().

int ff_interleave_packet_per_dts	(	AVFormatContext *	s,
		AVPacket *	out,
		AVPacket *	pkt,
		int	flush
	)

Interleave a packet per dts in an output media file.

Packets with pkt->destruct == av_destruct_packet will be freed inside this function, so they cannot be used after it. Note that calling av_free_packet() on them is still safe.

Parameters

s	media file handle
out	the interleaved packet will be output here
pkt	the input packet
flush	1 if no further packets are available as input and all remaining packets should be output

Returns: 1 if a packet was output, 0 if no packet could be output, < 0 if an error occurred

Definition at line 449 of file mux.c.

Referenced by gxf_interleave_packet(), and interleave_packet().

static int interleave_packet	(	AVFormatContext *	s,
		AVPacket *	out,
		AVPacket *	in,
		int	flush
	)

static

Interleave an AVPacket correctly so it can be muxed.

Parameters

out	the interleaved packet will be output here
in	the input packet
flush	1 if no further packets are available as input and all remaining packets should be output

Returns: 1 if a packet was output, 0 if no packet could be output, < 0 if an error occurred

Definition at line 522 of file mux.c.

Referenced by av_interleaved_write_frame(), and av_write_trailer().

int ff_write_chained	(	AVFormatContext *	dst,
		int	dst_stream,
		AVPacket *	pkt,
		AVFormatContext *	src
	)

Write a packet to another muxer than the one the user originally intended.

Useful when chaining muxers, where one muxer internally writes a received packet to another muxer.

Parameters

dst	the muxer to write the packet to
dst_stream	the stream index within dst to write the packet to
pkt	the packet to be written
src	the muxer the packet originally was intended for

Returns: the value av_write_frame returned

Definition at line 622 of file mux.c.

Referenced by ff_mov_add_hinted_packet(), hds_write_packet(), hls_write_packet(), ism_write_packet(), rtsp_write_packet(), sap_write_packet(), and seg_write_packet().

Functions

Detailed Description

Function Documentation