hvirtual/quicktime/ffmpeg/libavcodec/liba52/a52_internal.h File Reference

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Data Structures

struct ba_t

struct expbap_t

struct a52_state_s

Defines

#define LEVEL_PLUS6DB   2.0

#define LEVEL_PLUS3DB   1.4142135623730951

#define LEVEL_3DB   0.7071067811865476

#define LEVEL_45DB   0.5946035575013605

#define LEVEL_6DB   0.5

#define EXP_REUSE   (0)

#define EXP_D15   (1)

#define EXP_D25   (2)

#define EXP_D45   (3)

#define DELTA_BIT_REUSE   (0)

#define DELTA_BIT_NEW   (1)

#define DELTA_BIT_NONE   (2)

#define DELTA_BIT_RESERVED   (3)

#define ROUND(x)   ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))

#define SAMPLE(x)   (x)

#define LEVEL(x)   (x)

#define MUL(a, b)   ((a) * (b))

#define MUL_L(a, b)   ((a) * (b))

#define MUL_C(a, b)   ((a) * (b))

#define DIV(a, b)   ((a) / (b))

#define BIAS(x)   ((x) + bias)

Typedefs

typedef sample_t quantizer_t

Functions

void a52_bit_allocate (a52_state_t *state, ba_t *ba, int bndstart, int start, int end, int fastleak, int slowleak, expbap_t *expbap)

int a52_downmix_init (int input, int flags, level_t *level, level_t clev, level_t slev)

int a52_downmix_coeff (level_t *coeff, int acmod, int output, level_t level, level_t clev, level_t slev)

void a52_downmix (sample_t *samples, int acmod, int output, sample_t bias, level_t clev, level_t slev)

void a52_upmix (sample_t *samples, int acmod, int output)

void a52_imdct_init (uint32_t mm_accel)

void a52_imdct_256 (sample_t *data, sample_t *delay, sample_t bias)

void a52_imdct_512 (sample_t *data, sample_t *delay, sample_t bias)

Define Documentation

#define BIAS ( x ) ((x) + bias)

Definition at line 135 of file a52_internal.h.

Referenced by mix21to2(), mix21toS(), mix22toS(), mix2to1(), mix31to2(), mix31toS(), mix32to2(), mix32toS(), mix3to1(), mix3to2(), mix4to1(), mix5to1(), move2to1(), ulaw2linear(), and vorbis_parse_audio_packet().

#define DELTA_BIT_NEW (1)

Definition at line 102 of file a52_internal.h.

#define DELTA_BIT_NONE (2)

Definition at line 103 of file a52_internal.h.

#define DELTA_BIT_RESERVED (3)

Definition at line 104 of file a52_internal.h.

#define DELTA_BIT_REUSE (0)

Definition at line 101 of file a52_internal.h.

#define DIV	(	a,
		b		)	((a) / (b))

Definition at line 134 of file a52_internal.h.

Referenced by a52_downmix_init().

#define EXP_D15 (1)

Definition at line 97 of file a52_internal.h.

#define EXP_D25 (2)

Definition at line 98 of file a52_internal.h.

#define EXP_D45 (3)

Definition at line 99 of file a52_internal.h.

#define EXP_REUSE (0)

Definition at line 96 of file a52_internal.h.

#define LEVEL ( x ) (x)

Definition at line 130 of file a52_internal.h.

Referenced by a52_downmix_init(), and a52_frame().

#define LEVEL_3DB 0.7071067811865476

Definition at line 92 of file a52_internal.h.

Referenced by a52_downmix_coeff(), a52_downmix_init(), and a52_frame().

#define LEVEL_45DB 0.5946035575013605

Definition at line 93 of file a52_internal.h.

Referenced by a52_frame().

#define LEVEL_6DB 0.5

Definition at line 94 of file a52_internal.h.

Referenced by a52_downmix_coeff(), and a52_frame().

#define LEVEL_PLUS3DB 1.4142135623730951

Definition at line 91 of file a52_internal.h.

Referenced by a52_downmix_init().

#define LEVEL_PLUS6DB 2.0

Definition at line 90 of file a52_internal.h.

Referenced by a52_downmix_coeff().

#define MUL	(	a,
		b		)	((a) * (b))

Definition at line 131 of file a52_internal.h.

Referenced by idct32().

#define MUL_C	(	a,
		b		)	((a) * (b))

Definition at line 133 of file a52_internal.h.

Referenced by a52_downmix_coeff(), a52_downmix_init(), and a52_frame().

#define MUL_L	(	a,
		b		)	((a) * (b))

Definition at line 132 of file a52_internal.h.

Referenced by a52_block(), a52_downmix_coeff(), a52_downmix_init(), and coeff_get_coupling().

#define ROUND ( x ) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))

Definition at line 124 of file a52_internal.h.

#define SAMPLE ( x ) (x)

Definition at line 129 of file a52_internal.h.

Referenced by a52_imdct_init().

Typedef Documentation

typedef sample_t quantizer_t

Definition at line 128 of file a52_internal.h.

Function Documentation

void a52_bit_allocate	(	a52_state_t *	state,
		ba_t *	ba,
		int	bndstart,
		int	start,
		int	end,
		int	fastleak,
		int	slowleak,
		expbap_t *	expbap
	)

Definition at line 119 of file bit_allocate.c.

References ba_t::bai, a52_state_s::bai, expbap_t::bap, baptab, bndtab, COMPUTE_MASK, a52_state_s::csnroffst, DELTA_BIT_NONE, ba_t::deltba, ba_t::deltbae, expbap_t::exp, floortab, a52_state_s::fscod, a52_state_s::halfrate, halfrate, hth, hthtab, latab, and UPDATE_LEAK.

Referenced by a52_block().

void a52_downmix	(	sample_t *	samples,
		int	acmod,
		int	output,
		sample_t	bias,
		level_t	clev,
		level_t	slev
	)

Definition at line 474 of file downmix.c.

References A52_2F1R, A52_2F2R, A52_3F, A52_3F1R, A52_3F2R, A52_CHANNEL, A52_CHANNEL2, A52_CHANNEL_MASK, A52_DOLBY, A52_MONO, A52_STEREO, CONVERT, memcpy, mix21to2(), mix21toS(), mix22toS(), mix2to1(), mix31to2(), mix31toS(), mix32to2(), mix32toS(), mix3to1(), mix3to2(), mix4to1(), mix5to1(), and move2to1().

Referenced by a52_block().

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int a52_downmix_coeff	(	level_t *	coeff,
		int	acmod,
		int	output,
		level_t	level,
		level_t	clev,
		level_t	slev
	)

Definition at line 156 of file downmix.c.

References A52_2F1R, A52_2F2R, A52_3F, A52_3F1R, A52_3F2R, A52_CHANNEL, A52_CHANNEL1, A52_CHANNEL2, A52_CHANNEL_MASK, A52_DOLBY, A52_MONO, A52_STEREO, CONVERT, LEVEL_3DB, LEVEL_6DB, LEVEL_PLUS6DB, MUL_C, and MUL_L.

Referenced by a52_block().

int a52_downmix_init	(	int	input,
		int	flags,
		level_t *	level,
		level_t	clev,
		level_t	slev
	)

Definition at line 28 of file downmix.c.

References A52_2F1R, A52_2F2R, A52_3F, A52_3F1R, A52_3F2R, A52_ADJUST_LEVEL, A52_CHANNEL, A52_CHANNEL1, A52_CHANNEL2, A52_CHANNEL_MASK, A52_DOLBY, A52_MONO, A52_STEREO, CONVERT, DIV, LEVEL, LEVEL_3DB, LEVEL_PLUS3DB, MUL_C, MUL_L, and output.

Referenced by a52_frame().

void a52_imdct_256	(	sample_t *	data,
		sample_t *	delay,
		sample_t	bias
	)

Definition at line 282 of file imdct.c.

References a52_imdct_window, BUTTERFLY_0, BUTTERFLY_B, fftorder, ifft64, complex_s::imag, complex_s::real, and window.

Referenced by a52_block().

void a52_imdct_512	(	sample_t *	data,
		sample_t *	delay,
		sample_t	bias
	)

Definition at line 245 of file imdct.c.

References a52_imdct_window, buf, BUTTERFLY_0, BUTTERFLY_B, fftorder, ifft128, complex_s::imag, complex_s::real, and window.

Referenced by a52_block().

void a52_imdct_init ( uint32_t mm_accel )

Definition at line 345 of file imdct.c.

References a52_imdct_window, besselI0(), fftorder, ifft128, ifft128_c(), ifft64, ifft64_c(), complex_s::imag, M_PI, MM_ACCEL_DJBFFT, complex_s::real, roots128, roots16, roots32, roots64, and SAMPLE.

Referenced by a52_init().

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void a52_upmix	(	sample_t *	samples,
		int	acmod,
		int	output
	)

Definition at line 615 of file downmix.c.

References A52_2F1R, A52_2F2R, A52_3F, A52_3F1R, A52_3F2R, A52_CHANNEL, A52_CHANNEL2, A52_CHANNEL_MASK, A52_DOLBY, A52_MONO, A52_STEREO, CONVERT, memcpy, and zero.

Referenced by a52_block().


Data Structures
struct	ba_t
struct	expbap_t
struct	a52_state_s
Defines
#define	LEVEL_PLUS6DB 2.0
#define	LEVEL_PLUS3DB 1.4142135623730951
#define	LEVEL_3DB 0.7071067811865476
#define	LEVEL_45DB 0.5946035575013605
#define	LEVEL_6DB 0.5
#define	EXP_REUSE (0)
#define	EXP_D15 (1)
#define	EXP_D25 (2)
#define	EXP_D45 (3)
#define	DELTA_BIT_REUSE (0)
#define	DELTA_BIT_NEW (1)
#define	DELTA_BIT_NONE (2)
#define	DELTA_BIT_RESERVED (3)
#define	ROUND(x) ((int)((x) + ((x) > 0 ? 0.5 : -0.5)))
#define	SAMPLE(x) (x)
#define	LEVEL(x) (x)
#define	MUL(a, b) ((a) * (b))
#define	MUL_L(a, b) ((a) * (b))
#define	MUL_C(a, b) ((a) * (b))
#define	DIV(a, b) ((a) / (b))
#define	BIAS(x) ((x) + bias)
Typedefs
typedef sample_t	quantizer_t
Functions
void	a52_bit_allocate (a52_state_t state, ba_t ba, int bndstart, int start, int end, int fastleak, int slowleak, expbap_t *expbap)
int	a52_downmix_init (int input, int flags, level_t *level, level_t clev, level_t slev)
int	a52_downmix_coeff (level_t *coeff, int acmod, int output, level_t level, level_t clev, level_t slev)
void	a52_downmix (sample_t *samples, int acmod, int output, sample_t bias, level_t clev, level_t slev)
void	a52_upmix (sample_t *samples, int acmod, int output)
void	a52_imdct_init (uint32_t mm_accel)
void	a52_imdct_256 (sample_t data, sample_t delay, sample_t bias)
void	a52_imdct_512 (sample_t data, sample_t delay, sample_t bias)