ac3_parser_internal.h File Reference

#include <stddef.h>
#include <stdint.h>
#include "ac3defs.h"
#include "get_bits.h"

Go to the source code of this file.

Data Structures
struct	AC3HeaderInfo

Enumerations
enum	AC3ParseError {   AC3_PARSE_ERROR_SYNC = -0x1030c0a, AC3_PARSE_ERROR_BSID = -0x2030c0a, AC3_PARSE_ERROR_SAMPLE_RATE = -0x3030c0a, AC3_PARSE_ERROR_FRAME_SIZE = -0x4030c0a,   AC3_PARSE_ERROR_FRAME_TYPE = -0x5030c0a, AC3_PARSE_ERROR_CRC = -0x6030c0a, AC3_PARSE_ERROR_CHANNEL_MAP = -0x7030c0a }

Functions
int	ff_ac3_parse_header (GetBitContext *gbc, AC3HeaderInfo *hdr)
	Parse AC-3 frame header. More...
int	avpriv_ac3_parse_header (AC3HeaderInfo **hdr, const uint8_t *buf, size_t size)
int	ff_ac3_find_syncword (const uint8_t *buf, int buf_size)

Enumeration Type Documentation

AC3ParseError

enum AC3ParseError

Enumerator
AC3_PARSE_ERROR_SYNC
AC3_PARSE_ERROR_BSID
AC3_PARSE_ERROR_SAMPLE_RATE
AC3_PARSE_ERROR_FRAME_SIZE
AC3_PARSE_ERROR_FRAME_TYPE
AC3_PARSE_ERROR_CRC
AC3_PARSE_ERROR_CHANNEL_MAP

Definition at line 85 of file ac3_parser_internal.h.

Function Documentation

ff_ac3_parse_header()

int ff_ac3_parse_header	(	GetBitContext *	gbc,
		AC3HeaderInfo *	hdr
	)

Parse AC-3 frame header.

Parse the header up to the lfeon element, which is the first 52 or 54 bits depending on the audio coding mode.

Parameters

[in]	gbc	BitContext containing the first 54 bits of the frame.
[out]	hdr	Pointer to struct where header info is written.

Returns

0 on success and AC3_PARSE_ERROR_* values otherwise.

Referenced by ac3_decode_frame(), eac3_core_filter(), ffat_create_decoder(), and parse_frame_header().

avpriv_ac3_parse_header()

int avpriv_ac3_parse_header	(	AC3HeaderInfo **	hdr,
		const uint8_t *	buf,
		size_t	size
	)

Definition at line 491 of file ac3_parser.c.

Referenced by ff_aac_ac3_parse(), ff_hls_senc_parse_audio_setup_info(), get_next_ac3_eac3_sync_frame(), handle_eac3(), and mpegts_write_packet_internal().

ff_ac3_find_syncword()

int ff_ac3_find_syncword	(	const uint8_t *	buf,
		int	buf_size
	)

Referenced by ac3_decode_frame(), and ff_aac_ac3_parse().