tak.c File Reference

#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/intreadwrite.h"
#include "tak.h"

Go to the source code of this file.

Macros
#define	CACHED_BITSTREAM_READER   !ARCH_X86_32
#define	BITSTREAM_READER_LE

Functions
static int	tak_get_nb_samples (int sample_rate, enum TAKFrameSizeType type)
int	ff_tak_check_crc (const uint8_t *buf, unsigned int buf_size)
static int	tak_parse_streaminfo (TAKStreamInfo *s, GetBitContext *gb)
int	avpriv_tak_parse_streaminfo (TAKStreamInfo *s, const uint8_t *buf, int size)
	Parse the Streaminfo metadata block. More...
int	ff_tak_decode_frame_header (void *logctx, GetBitContext *gb, TAKStreamInfo *ti, int log_level_offset)
	Validate and decode a frame header. More...

Variables
static const int64_t	tak_channel_layouts []
static const uint16_t	frame_duration_type_quants []

Macro Definition Documentation

CACHED_BITSTREAM_READER

#define CACHED_BITSTREAM_READER   !ARCH_X86_32

Definition at line 26 of file tak.c.

BITSTREAM_READER_LE

#define BITSTREAM_READER_LE

Definition at line 27 of file tak.c.

Function Documentation

tak_get_nb_samples()

static int tak_get_nb_samples ( int  sample_rate, enum TAKFrameSizeType  type  )

static

Definition at line 56 of file tak.c.

Referenced by tak_parse_streaminfo().

ff_tak_check_crc()

int ff_tak_check_crc	(	const uint8_t *	buf,
		unsigned int	buf_size
	)

Definition at line 79 of file tak.c.

Referenced by tak_decode_frame(), and tak_parse().

tak_parse_streaminfo()

static int tak_parse_streaminfo ( TAKStreamInfo *  s, GetBitContext *  gb  )

static

Definition at line 95 of file tak.c.

Referenced by avpriv_tak_parse_streaminfo(), and ff_tak_decode_frame_header().

avpriv_tak_parse_streaminfo()

int avpriv_tak_parse_streaminfo	(	TAKStreamInfo *	s,
		const uint8_t *	buf,
		int	size
	)

Parse the Streaminfo metadata block.

Parameters

[out]	s	storage for parsed information
[in]	buf	input buffer
[in]	size	size of input buffer in bytes

Returns

non-zero on error, 0 if OK

Definition at line 136 of file tak.c.

Referenced by tak_read_header().

ff_tak_decode_frame_header()

int ff_tak_decode_frame_header	(	void *	logctx,
		GetBitContext *	gb,
		TAKStreamInfo *	s,
		int	log_level_offset
	)

Validate and decode a frame header.

Parameters

	logctx	for use as av_log() context
[in]	gb	GetBitContext from which to read frame header
[out]	s	frame information
	log_level_offset	log level offset, can be used to silence error messages.

Returns

non-zero on error, 0 if OK

Definition at line 147 of file tak.c.

Referenced by tak_decode_frame(), and tak_parse().

Variable Documentation

tak_channel_layouts

const int64_t tak_channel_layouts[]

static

Initial value:

= {
    0,
    AV_CH_FRONT_LEFT,
    AV_CH_FRONT_RIGHT,
    AV_CH_FRONT_CENTER,
    AV_CH_LOW_FREQUENCY,
    AV_CH_BACK_LEFT,
    AV_CH_BACK_RIGHT,
    AV_CH_FRONT_LEFT_OF_CENTER,
    AV_CH_FRONT_RIGHT_OF_CENTER,
    AV_CH_BACK_CENTER,
    AV_CH_SIDE_LEFT,
    AV_CH_SIDE_RIGHT,
    AV_CH_TOP_CENTER,
    AV_CH_TOP_FRONT_LEFT,
    AV_CH_TOP_FRONT_CENTER,
    AV_CH_TOP_FRONT_RIGHT,
    AV_CH_TOP_BACK_LEFT,
    AV_CH_TOP_BACK_CENTER,
    AV_CH_TOP_BACK_RIGHT,
}

Definition at line 30 of file tak.c.

Referenced by tak_parse_streaminfo().

frame_duration_type_quants

const uint16_t frame_duration_type_quants[]

static

Initial value:

= {
    3, 4, 6, 8, 4096, 8192, 16384, 512, 1024, 2048,
}

Definition at line 52 of file tak.c.

Referenced by tak_get_nb_samples().