libavcodec/mlp_parser.c File Reference

MLP parser. More...

#include <stdint.h>
#include "libavutil/crc.h"
#include "get_bits.h"
#include "parser.h"
#include "mlp_parser.h"
#include "mlp.h"

Go to the source code of this file.

Data Structures
struct	MLPParseContext
Functions
static int	mlp_samplerate (int in)
static int	truehd_channels (int chanmap)
int	ff_mlp_read_major_sync (void *log, MLPHeaderInfo *mh, GetBitContext *gb)
	Read a major sync info header - contains high level information about the stream - sample rate, channel arrangement etc.
static av_cold int	mlp_init (AVCodecParserContext *s)
static int	mlp_parse (AVCodecParserContext *s, AVCodecContext *avctx, const uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size)
Variables
static const uint8_t	mlp_quants [16]
static const uint8_t	mlp_channels [32]
static const uint8_t	thd_chancount [13]
AVCodecParser	mlp_parser

---

Detailed Description

MLP parser.

Definition in file mlp_parser.c.

---

Function Documentation

int ff_mlp_read_major_sync	(	void *	log,
		MLPHeaderInfo *	mh,
		GetBitContext *	gb
	)

Read a major sync info header - contains high level information about the stream - sample rate, channel arrangement etc.

Most of this information is not actually necessary for decoding, only for playback. gb must be a freshly initialized GetBitContext with no bits read.

Definition at line 74 of file mlp_parser.c.

Referenced by mlp_parse(), and read_major_sync().

static av_cold int mlp_init

(

AVCodecParserContext *

s

)

[static]

Definition at line 153 of file mlp_parser.c.

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

Definition at line 159 of file mlp_parser.c.

static int mlp_samplerate

(

int

in

)

[static]

Definition at line 50 of file mlp_parser.c.

Referenced by ff_mlp_read_major_sync().

static int truehd_channels

(

int

chanmap

)

[static]

Definition at line 58 of file mlp_parser.c.

Referenced by mlp_parse().

---

Variable Documentation

const uint8_t mlp_channels[32] [static]

Initial value:

 {
    1, 2, 3, 4, 3, 4, 5, 3, 4, 5, 4, 5, 6, 4, 5, 4,
    5, 6, 5, 5, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
}

Definition at line 40 of file mlp_parser.c.

Referenced by mlp_parse().

AVCodecParser mlp_parser

Initial value:

 {
    { CODEC_ID_MLP, CODEC_ID_TRUEHD },
    sizeof(MLPParseContext),
    mlp_init,
    mlp_parse,
    ff_parse_close,
}

Definition at line 291 of file mlp_parser.c.

const uint8_t mlp_quants[16] [static]

Initial value:

 {
    16, 20, 24, 0, 0, 0, 0, 0,
     0,  0,  0, 0, 0, 0, 0, 0,
}

Definition at line 35 of file mlp_parser.c.

Referenced by ff_mlp_read_major_sync().

const uint8_t thd_chancount[13] [static]

Initial value:

 {

     2,   1,   1,   2,   2,   2,   2,   1,   1,   2,   2,   1,   1
}

Definition at line 45 of file mlp_parser.c.

Referenced by truehd_channels().