FFmpeg
 All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
Data Structures | Macros | Functions | Variables
dca_parser.c File Reference
#include "parser.h"
#include "dca.h"
#include "dca_parser.h"
#include "get_bits.h"
#include "put_bits.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)
 
int ff_dca_convert_bitstream (const uint8_t *src, int src_size, uint8_t *dst, int max_size)
 Convert bitstream to one representation based on sync marker.
 
static int dca_parse_params (const uint8_t *buf, int buf_size, int *duration, int *sample_rate)
 
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_MARKER_14B_LE && (i < buf_size-2) && (buf[i+1] & 0xF0) == 0xF0 && buf[i+2] == 0x07) \
|| (state == DCA_MARKER_14B_BE && (i < buf_size-2) && buf[i+1] == 0x07 && (buf[i+2] & 0xF0) == 0xF0) \

Definition at line 39 of file dca_parser.c.

Referenced by dca_find_frame_end(), dxva2_vc1_decode_slice(), vaapi_vc1_decode_slice(), vc1_decode_frame(), vc1_find_frame_end(), 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 48 of file dca_parser.c.

Referenced by dca_parse().

static av_cold int dca_parse_init ( AVCodecParserContext s)
static

Definition at line 96 of file dca_parser.c.

int ff_dca_convert_bitstream ( const uint8_t src,
int  src_size,
uint8_t dst,
int  max_size 
)

Convert bitstream to one representation based on sync marker.

Definition at line 104 of file dca_parser.c.

Referenced by dca_decode_frame(), and dca_parse_params().

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

Definition at line 139 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 169 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 202 of file dca_parser.c.