Frame parsing

Data Structures
struct	AVCodecParserContext
struct	AVCodecParser

Enumerations
enum	AVPictureStructure { AV_PICTURE_STRUCTURE_UNKNOWN , AV_PICTURE_STRUCTURE_TOP_FIELD , AV_PICTURE_STRUCTURE_BOTTOM_FIELD , AV_PICTURE_STRUCTURE_FRAME }

Functions
const AVCodecParser *	av_parser_iterate (void **opaque)
	Iterate over all registered codec parsers. More...
AVCodecParserContext *	av_parser_init (int codec_id)
int	av_parser_parse2 (AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts, int64_t pos)
	Parse a packet. More...
void	av_parser_close (AVCodecParserContext *s)

Detailed Description

Enumeration Type Documentation

AVPictureStructure

enum AVPictureStructure

Enumerator
AV_PICTURE_STRUCTURE_UNKNOWN
AV_PICTURE_STRUCTURE_TOP_FIELD
AV_PICTURE_STRUCTURE_BOTTOM_FIELD
AV_PICTURE_STRUCTURE_FRAME

Definition at line 2782 of file avcodec.h.

Function Documentation

av_parser_iterate()

const AVCodecParser * av_parser_iterate

(

void **

opaque

)

Iterate over all registered codec parsers.

Parameters

opaque

a pointer where libavcodec will store the iteration state. Must point to NULL to start the iteration.

Returns

the next registered codec parser or NULL when the iteration is finished

av_parser_init()

AVCodecParserContext * av_parser_init

(

int

codec_id

)

Examples

decode_audio.c, and decode_video.c.

Referenced by main().

av_parser_parse2()

int av_parser_parse2	(	AVCodecParserContext *	s,
		AVCodecContext *	avctx,
		uint8_t **	poutbuf,
		int *	poutbuf_size,
		const uint8_t *	buf,
		int	buf_size,
		int64_t	pts,
		int64_t	dts,
		int64_t	pos
	)

Parse a packet.

Parameters

s	parser context.
avctx	codec context.
poutbuf	set to pointer to parsed buffer or NULL if not yet finished.
poutbuf_size	set to size of parsed buffer or zero if not yet finished.
buf	input buffer.
buf_size	buffer size in bytes without the padding. I.e. the full buffer size is assumed to be buf_size + AV_INPUT_BUFFER_PADDING_SIZE. To signal EOF, this should be 0 (so that the last frame can be output).
pts	input presentation timestamp.
dts	input decoding timestamp.
pos	input byte position in stream.

Returns

the number of bytes of the input bitstream used.

Example:

while(in_len){
    len = av_parser_parse2(myparser, AVCodecContext, &data, &size,
                                     in_data, in_len,
                                     pts, dts, pos);
    in_data += len;
    in_len  -= len;
 
    if(size)
       decode_frame(data, size);
}

Examples

decode_audio.c, and decode_video.c.

Referenced by main().

av_parser_close()

void av_parser_close

(

AVCodecParserContext *

s

)

Examples

decode_audio.c, and decode_video.c.

Referenced by main().