dca_parser.c File Reference

#include "dca.h"
#include "dca_syncwords.h"
#include "get_bits.h"
#include "parser.h"

Go to the source code of this file.

Data Structures
struct	DCAParseContext

Macros
#define	IS_MARKER(state, i, buf, buf_size)

Functions
static int	dca_find_frame_end (DCAParseContext *pc1, const uint8_t *buf, int buf_size)
	Find the end of the current frame in the bitstream.
static av_cold int	dca_parse_init (AVCodecParserContext *s)
static int	dca_parse_params (const uint8_t *buf, int buf_size, int *duration, int *sample_rate, int *framesize)
static int	dca_parse (AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)

Variables
AVCodecParser	ff_dca_parser

Macro Definition Documentation

#define IS_MARKER	(		state,
			i,
			buf,
			buf_size
	)

Value:

((state == DCA_SYNCWORD_CORE_14B_LE && (i < buf_size - 2) && (buf[i + 1] & 0xF0) == 0xF0 &&  buf[i + 2]         == 0x07) || \
     (state == DCA_SYNCWORD_CORE_14B_BE && (i < buf_size - 2) &&  buf[i + 1]         == 0x07 && (buf[i + 2] & 0xF0) == 0xF0) || \
      state == DCA_SYNCWORD_CORE_LE || state == DCA_SYNCWORD_CORE_BE || state == DCA_SYNCWORD_SUBSTREAM)

Definition at line 38 of file dca_parser.c.

Referenced by dca_find_frame_end(), dxva2_vc1_decode_slice(), vaapi_vc1_decode_slice(), vc1_decode_frame(), and vc1_split().

Function Documentation

static int dca_find_frame_end ( DCAParseContext *  pc1, const uint8_t *  buf, int  buf_size  )

static

Find the end of the current frame in the bitstream.

Returns

the position of the first byte of the next frame, or -1

Definition at line 47 of file dca_parser.c.

Referenced by dca_parse().

static av_cold int dca_parse_init ( AVCodecParserContext *  s )

static

Definition at line 92 of file dca_parser.c.

static int dca_parse_params ( const uint8_t *  buf, int  buf_size, int *  duration, int *  sample_rate, int *  framesize  )

static

Definition at line 100 of file dca_parser.c.

Referenced by dca_parse().

static int dca_parse ( AVCodecParserContext *  s, AVCodecContext *  avctx, const uint8_t **  poutbuf, int *  poutbuf_size, const uint8_t *  buf, int  buf_size  )

static

Definition at line 134 of file dca_parser.c.

Variable Documentation

AVCodecParser ff_dca_parser

Initial value:

= {
    .codec_ids      = { AV_CODEC_ID_DTS },
    .priv_data_size = sizeof(DCAParseContext),
    .parser_init    = dca_parse_init,
    .parser_parse   = dca_parse,
    .parser_close   = ff_parse_close,
}

Definition at line 166 of file dca_parser.c.