opus_rc.c File Reference

#include "opus_rc.h"

Go to the source code of this file.

Macros
#define	OPUS_RC_BITS   32
#define	OPUS_RC_SYM   8
#define	OPUS_RC_CEIL   ((1 << OPUS_RC_SYM) - 1)
#define	OPUS_RC_TOP   (1u << 31)
#define	OPUS_RC_BOT   (OPUS_RC_TOP >> OPUS_RC_SYM)
#define	OPUS_RC_SHIFT   (OPUS_RC_BITS - OPUS_RC_SYM - 1)

Functions
static av_always_inline void	opus_rc_enc_carryout (OpusRangeCoder *rc, int cbuf)
static av_always_inline void	opus_rc_dec_normalize (OpusRangeCoder *rc)
static av_always_inline void	opus_rc_enc_normalize (OpusRangeCoder *rc)
static av_always_inline void	opus_rc_dec_update (OpusRangeCoder *rc, uint32_t scale, uint32_t low, uint32_t high, uint32_t total)
static av_always_inline void	opus_rc_enc_update (OpusRangeCoder *rc, uint32_t b, uint32_t p, uint32_t p_tot, const int ptwo)
uint32_t	ff_opus_rc_dec_cdf (OpusRangeCoder *rc, const uint16_t *cdf)
void	ff_opus_rc_enc_cdf (OpusRangeCoder *rc, int val, const uint16_t *cdf)
uint32_t	ff_opus_rc_dec_log (OpusRangeCoder *rc, uint32_t bits)
void	ff_opus_rc_enc_log (OpusRangeCoder *rc, int val, uint32_t bits)
uint32_t	ff_opus_rc_get_raw (OpusRangeCoder *rc, uint32_t count)
	CELT: read 1-25 raw bits at the end of the frame, backwards byte-wise. More...
void	ff_opus_rc_put_raw (OpusRangeCoder *rc, uint32_t val, uint32_t count)
	CELT: write 0 - 31 bits to the rawbits buffer. More...
uint32_t	ff_opus_rc_dec_uint (OpusRangeCoder *rc, uint32_t size)
	CELT: read a uniform distribution. More...
void	ff_opus_rc_enc_uint (OpusRangeCoder *rc, uint32_t val, uint32_t size)
	CELT: write a uniformly distributed integer. More...
uint32_t	ff_opus_rc_dec_uint_step (OpusRangeCoder *rc, int k0)
void	ff_opus_rc_enc_uint_step (OpusRangeCoder *rc, uint32_t val, int k0)
uint32_t	ff_opus_rc_dec_uint_tri (OpusRangeCoder *rc, int qn)
void	ff_opus_rc_enc_uint_tri (OpusRangeCoder *rc, uint32_t k, int qn)
int	ff_opus_rc_dec_laplace (OpusRangeCoder *rc, uint32_t symbol, int decay)
void	ff_opus_rc_enc_laplace (OpusRangeCoder *rc, int *value, uint32_t symbol, int decay)
int	ff_opus_rc_dec_init (OpusRangeCoder *rc, const uint8_t *data, int size)
void	ff_opus_rc_dec_raw_init (OpusRangeCoder *rc, const uint8_t *rightend, uint32_t bytes)
void	ff_opus_rc_enc_end (OpusRangeCoder *rc, uint8_t *dst, int size)
void	ff_opus_rc_enc_init (OpusRangeCoder *rc)

Macro Definition Documentation

#define OPUS_RC_BITS   32

Definition at line 25 of file opus_rc.c.

Referenced by ff_opus_rc_enc_end(), and ff_opus_rc_enc_init().

#define OPUS_RC_SYM   8

Definition at line 26 of file opus_rc.c.

Referenced by ff_opus_rc_enc_end(), opus_rc_dec_normalize(), opus_rc_enc_carryout(), and opus_rc_enc_normalize().

#define OPUS_RC_CEIL   ((1 << OPUS_RC_SYM) - 1)

Definition at line 27 of file opus_rc.c.

Referenced by opus_rc_dec_normalize(), and opus_rc_enc_carryout().

#define OPUS_RC_TOP   (1u << 31)

Definition at line 28 of file opus_rc.c.

Referenced by ff_opus_rc_enc_end(), ff_opus_rc_enc_init(), opus_rc_dec_normalize(), and opus_rc_enc_normalize().

#define OPUS_RC_BOT   (OPUS_RC_TOP >> OPUS_RC_SYM)

Definition at line 29 of file opus_rc.c.

Referenced by opus_rc_dec_normalize(), and opus_rc_enc_normalize().

#define OPUS_RC_SHIFT   (OPUS_RC_BITS - OPUS_RC_SYM - 1)

Definition at line 30 of file opus_rc.c.

Referenced by ff_opus_rc_enc_end(), and opus_rc_enc_normalize().

Function Documentation

static av_always_inline void opus_rc_enc_carryout ( OpusRangeCoder *  rc, int  cbuf  )

static

Definition at line 32 of file opus_rc.c.

Referenced by ff_opus_rc_enc_end(), and opus_rc_enc_normalize().

static av_always_inline void opus_rc_dec_normalize ( OpusRangeCoder *  rc )

static

Definition at line 47 of file opus_rc.c.

Referenced by ff_opus_rc_dec_init(), ff_opus_rc_dec_log(), and opus_rc_dec_update().

static av_always_inline void opus_rc_enc_normalize ( OpusRangeCoder *  rc )

static

Definition at line 56 of file opus_rc.c.

Referenced by opus_rc_enc_update().

static av_always_inline void opus_rc_dec_update ( OpusRangeCoder *  rc, uint32_t  scale, uint32_t  low, uint32_t  high, uint32_t  total  )

static

Definition at line 66 of file opus_rc.c.

Referenced by ff_opus_rc_dec_cdf(), ff_opus_rc_dec_laplace(), ff_opus_rc_dec_uint(), ff_opus_rc_dec_uint_step(), and ff_opus_rc_dec_uint_tri().

static av_always_inline void opus_rc_enc_update ( OpusRangeCoder *  rc, uint32_t  b, uint32_t  p, uint32_t  p_tot, const int  ptwo  )

static

Definition at line 77 of file opus_rc.c.

Referenced by ff_opus_rc_enc_cdf(), ff_opus_rc_enc_laplace(), ff_opus_rc_enc_log(), ff_opus_rc_enc_uint(), ff_opus_rc_enc_uint_step(), and ff_opus_rc_enc_uint_tri().

uint32_t ff_opus_rc_dec_cdf	(	OpusRangeCoder *	rc,
		const uint16_t *	cdf
	)

Definition at line 90 of file opus_rc.c.

Referenced by celt_decode_allocation(), celt_decode_coarse_energy(), parse_postfilter(), silk_count_children(), silk_decode_excitation(), silk_decode_frame(), and silk_decode_lpc().

void ff_opus_rc_enc_cdf	(	OpusRangeCoder *	rc,
		int	val,
		const uint16_t *	cdf
	)

Definition at line 109 of file opus_rc.c.

Referenced by celt_bitalloc(), and celt_quant_coarse().

uint32_t ff_opus_rc_dec_log	(	OpusRangeCoder *	rc,
		uint32_t	bits
	)

Definition at line 114 of file opus_rc.c.

Referenced by celt_decode_allocation(), celt_decode_coarse_energy(), celt_decode_tf_changes(), ff_celt_decode_band(), ff_celt_decode_frame(), ff_silk_decode_superframe(), opus_decode_frame(), and parse_postfilter().

void ff_opus_rc_enc_log	(	OpusRangeCoder *	rc,
		int	val,
		uint32_t	bits
	)

Definition at line 131 of file opus_rc.c.

Referenced by celt_bitalloc(), celt_enc_tf(), celt_encode_frame(), celt_quant_coarse(), and ff_celt_encode_band().

uint32_t ff_opus_rc_get_raw	(	OpusRangeCoder *	rc,
		uint32_t	count
	)

CELT: read 1-25 raw bits at the end of the frame, backwards byte-wise.

Definition at line 140 of file opus_rc.c.

Referenced by celt_decode_final_energy(), celt_decode_fine_energy(), ff_celt_decode_band(), ff_celt_decode_frame(), ff_opus_rc_dec_uint(), and parse_postfilter().

void ff_opus_rc_put_raw	(	OpusRangeCoder *	rc,
		uint32_t	val,
		uint32_t	count
	)

CELT: write 0 - 31 bits to the rawbits buffer.

Definition at line 161 of file opus_rc.c.

Referenced by celt_encode_frame(), celt_quant_final(), celt_quant_fine(), ff_celt_encode_band(), ff_opus_rc_enc_end(), and ff_opus_rc_enc_uint().

uint32_t ff_opus_rc_dec_uint	(	OpusRangeCoder *	rc,
		uint32_t	size
	)

CELT: read a uniform distribution.

Definition at line 182 of file opus_rc.c.

Referenced by celt_decode_allocation(), celt_decode_pulses(), ff_celt_decode_band(), opus_decode_frame(), and parse_postfilter().

void ff_opus_rc_enc_uint	(	OpusRangeCoder *	rc,
		uint32_t	val,
		uint32_t	size
	)

CELT: write a uniformly distributed integer.

Definition at line 204 of file opus_rc.c.

Referenced by celt_bitalloc(), celt_encode_pulses(), and ff_celt_encode_band().

uint32_t ff_opus_rc_dec_uint_step	(	OpusRangeCoder *	rc,
		int	k0
	)

Definition at line 211 of file opus_rc.c.

Referenced by ff_celt_decode_band().

void ff_opus_rc_enc_uint_step	(	OpusRangeCoder *	rc,
		uint32_t	val,
		int	k0
	)

Definition at line 226 of file opus_rc.c.

Referenced by ff_celt_encode_band().

uint32_t ff_opus_rc_dec_uint_tri	(	OpusRangeCoder *	rc,
		int	qn
	)

Definition at line 234 of file opus_rc.c.

Referenced by ff_celt_decode_band().

void ff_opus_rc_enc_uint_tri	(	OpusRangeCoder *	rc,
		uint32_t	k,
		int	qn
	)

Definition at line 258 of file opus_rc.c.

Referenced by ff_celt_encode_band().

int ff_opus_rc_dec_laplace	(	OpusRangeCoder *	rc,
		uint32_t	symbol,
		int	decay
	)

Definition at line 275 of file opus_rc.c.

Referenced by celt_decode_coarse_energy().

void ff_opus_rc_enc_laplace	(	OpusRangeCoder *	rc,
		int *	value,
		uint32_t	symbol,
		int	decay
	)

Definition at line 314 of file opus_rc.c.

Referenced by celt_quant_coarse().

int ff_opus_rc_dec_init	(	OpusRangeCoder *	rc,
		const uint8_t *	data,
		int	size
	)

Definition at line 338 of file opus_rc.c.

Referenced by opus_decode_frame(), and opus_decode_redundancy().

void ff_opus_rc_dec_raw_init	(	OpusRangeCoder *	rc,
		const uint8_t *	rightend,
		uint32_t	bytes
	)

Definition at line 352 of file opus_rc.c.

Referenced by ff_opus_rc_enc_init(), opus_decode_frame(), and opus_decode_redundancy().

void ff_opus_rc_enc_end	(	OpusRangeCoder *	rc,
		uint8_t *	dst,
		int	size
	)

Definition at line 360 of file opus_rc.c.

Referenced by opus_packet_assembler().

void ff_opus_rc_enc_init

(

OpusRangeCoder *

rc

)

Definition at line 399 of file opus_rc.c.

Referenced by opus_encode_frame().