hvirtual/quicktime/ffmpeg/libavcodec/ac3.h File Reference

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	AC3BitAllocParameters
Defines
#define	AC3_MAX_CODED_FRAME_SIZE   3840
#define	AC3_MAX_CHANNELS   6
#define	NB_BLOCKS   6
#define	AC3_FRAME_SIZE   (NB_BLOCKS * 256)
#define	EXP_REUSE   0
#define	EXP_NEW   1
#define	EXP_D15   1
#define	EXP_D25   2
#define	EXP_D45   3
Functions
void	ac3_common_init (void)
void	ac3_parametric_bit_allocation (AC3BitAllocParameters *s, uint8_t *bap, int8_t *exp, int start, int end, int snroffset, int fgain, int is_lfe, int deltbae, int deltnseg, uint8_t *deltoffst, uint8_t *deltlen, uint8_t *deltba)

---

Define Documentation

#define AC3_FRAME_SIZE   (NB_BLOCKS * 256)

Definition at line 29 of file ac3.h.

Referenced by AC3_encode_init().

#define AC3_MAX_CHANNELS   6

Definition at line 26 of file ac3.h.

Referenced by AC3_encode_frame().

#define AC3_MAX_CODED_FRAME_SIZE   3840

Definition at line 25 of file ac3.h.

Referenced by output_frame_header().

#define EXP_D15   1

Definition at line 35 of file ac3.h.

Referenced by compute_exp_strategy(), encode_exp(), output_audio_block(), and parse_exponents().

#define EXP_D25   2

Definition at line 36 of file ac3.h.

Referenced by compute_exp_strategy(), encode_exp(), output_audio_block(), and parse_exponents().

#define EXP_D45   3

Definition at line 37 of file ac3.h.

Referenced by compute_exp_strategy(), encode_exp(), output_audio_block(), and parse_exponents().

#define EXP_NEW   1

Definition at line 33 of file ac3.h.

Referenced by compute_exp_strategy().

#define EXP_REUSE   0

Definition at line 32 of file ac3.h.

Referenced by a52_block(), AC3_encode_frame(), compute_bit_allocation(), compute_exp_strategy(), and output_audio_block().

#define NB_BLOCKS   6

Definition at line 28 of file ac3.h.

Referenced by AC3_encode_frame(), bit_alloc(), compute_bit_allocation(), and compute_exp_strategy().

---

Function Documentation

void ac3_common_init

(

void

)

Definition at line 793 of file ac3enc.c.

References bndsz, bndtab, and masktab.

Referenced by AC3_encode_init().

void ac3_parametric_bit_allocation	(	AC3BitAllocParameters *	s,
		uint8_t *	bap,
		int8_t *	exp,
		int	start,
		int	end,
		int	snroffset,
		int	fgain,
		int	is_lfe,
		int	deltbae,
		int	deltnseg,
		uint8_t *	deltoffst,
		uint8_t *	deltlen,
		uint8_t *	deltba
	)

Definition at line 118 of file ac3enc.c.

References baptab, bndsz, bndtab, c, calc_lowcomp(), calc_lowcomp1(), AC3BitAllocParameters::cplfleak, AC3BitAllocParameters::cplsleak, AC3BitAllocParameters::dbknee, AC3BitAllocParameters::fdecay, AC3BitAllocParameters::floor, AC3BitAllocParameters::fscod, AC3BitAllocParameters::halfratecod, hth, latab, masktab, AC3BitAllocParameters::sdecay, and AC3BitAllocParameters::sgain.

Referenced by bit_alloc().

Here is the call graph for this function: