libavcodec/ac3_parser.h File Reference

#include "ac3.h"
#include "get_bits.h"

Go to the source code of this file.

Functions
int	ff_ac3_parse_header (GetBitContext *gbc, AC3HeaderInfo *hdr)
	Parses AC-3 frame header.
int	ff_ac3_parse_header_full (GetBitContext *gbc, AC3HeaderInfo *hdr)
	Parses AC-3 frame header and sets channel_map Parses the header up to the lfeon (channel_map in E-AC-3) element, which is the first 52, 54 or 104 bits depending on the audio coding mode.

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Function Documentation

int ff_ac3_parse_header	(	GetBitContext *	gbc,
		AC3HeaderInfo *	hdr
	)

Parses AC-3 frame header.

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

Parameters:

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

Returns:

Returns 0 on success, -1 if there is a sync word mismatch, -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate) element is invalid, or -4 if the frmsizecod (bit rate) element is invalid.

Definition at line 37 of file ac3_parser.c.

Referenced by ac3_sync(), ff_ac3_parse_header_full(), and parse_frame_header().

int ff_ac3_parse_header_full	(	GetBitContext *	gbc,
		AC3HeaderInfo *	hdr
	)

Parses AC-3 frame header and sets channel_map Parses the header up to the lfeon (channel_map in E-AC-3) element, which is the first 52, 54 or 104 bits depending on the audio coding mode.

Parameters:

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

Returns:

value returned by ff_ac3_parse_header

Definition at line 131 of file ac3_parser.c.