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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) || \

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.