rc.h File Reference

#include <stdint.h>
#include "libavcodec/get_bits.h"
#include "opus.h"

Go to the source code of this file.

Data Structures
struct	RawBitsContext
struct	OpusRangeCoder

Macros
#define	opus_ilog(i)   (av_log2(i) + !!(i))
#define	OPUS_RC_CHECKPOINT_UPDATE(rc)
#define	OPUS_RC_CHECKPOINT_SPAWN(rc)
#define	OPUS_RC_CHECKPOINT_BITS(rc)   (opus_rc_tell_frac(rc) - rc_rollback_bits)
#define	OPUS_RC_CHECKPOINT_ROLLBACK(rc)   memcpy(rc, &rc_rollback_ctx, sizeof(OpusRangeCoder)); \

Functions
static av_always_inline uint32_t	opus_rc_tell (const OpusRangeCoder *rc)
	CELT: estimate bits of entropy that have thus far been consumed for the current CELT frame, to integer and fractional (1/8th bit) precision. More...
static av_always_inline uint32_t	opus_rc_tell_frac (const OpusRangeCoder *rc)
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_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)
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_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...
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

opus_ilog

#define opus_ilog

(

i

)

(av_log2(i) + !!(i))

Definition at line 32 of file rc.h.

OPUS_RC_CHECKPOINT_UPDATE

#define OPUS_RC_CHECKPOINT_UPDATE

(

rc

)

Value:

    rc_rollback_bits = opus_rc_tell_frac(rc); \
    rc_rollback_ctx  = *rc

Definition at line 113 of file rc.h.

OPUS_RC_CHECKPOINT_SPAWN

#define OPUS_RC_CHECKPOINT_SPAWN

(

rc

)

Value:

    uint32_t rc_rollback_bits = opus_rc_tell_frac(rc); \
    OpusRangeCoder rc_rollback_ctx = *rc \

Definition at line 117 of file rc.h.

OPUS_RC_CHECKPOINT_BITS

#define OPUS_RC_CHECKPOINT_BITS

(

rc

)

(opus_rc_tell_frac(rc) - rc_rollback_bits)

Definition at line 121 of file rc.h.

OPUS_RC_CHECKPOINT_ROLLBACK

#define OPUS_RC_CHECKPOINT_ROLLBACK

(

rc

)

memcpy(rc, &rc_rollback_ctx, sizeof(OpusRangeCoder)); \

Definition at line 124 of file rc.h.

Function Documentation

opus_rc_tell()

static av_always_inline uint32_t opus_rc_tell ( const OpusRangeCoder *  rc )

static

CELT: estimate bits of entropy that have thus far been consumed for the current CELT frame, to integer and fractional (1/8th bit) precision.

Definition at line 62 of file rc.h.

Referenced by celt_decode_coarse_energy(), celt_decode_final_energy(), celt_decode_tf_changes(), celt_enc_quant_pfilter(), celt_enc_tf(), celt_encode_frame(), celt_quant_final(), exp_quant_coarse(), ff_celt_bitalloc(), ff_celt_decode_frame(), opus_decode_frame(), and parse_postfilter().

opus_rc_tell_frac()

static av_always_inline uint32_t opus_rc_tell_frac ( const OpusRangeCoder *  rc )

static

Definition at line 67 of file rc.h.

Referenced by ff_celt_bitalloc(), ff_celt_quant_bands(), pvq_band_cost(), and quant_band_template().

ff_opus_rc_dec_cdf()

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

Definition at line 90 of file rc.c.

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

ff_opus_rc_enc_cdf()

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

Definition at line 109 of file rc.c.

Referenced by celt_enc_quant_pfilter(), exp_quant_coarse(), and ff_celt_bitalloc().

ff_opus_rc_dec_log()

uint32_t ff_opus_rc_dec_log	(	OpusRangeCoder *	rc,
		uint32_t	bits
	)

Definition at line 114 of file rc.c.

Referenced by celt_decode_coarse_energy(), celt_decode_tf_changes(), ff_celt_bitalloc(), ff_celt_decode_frame(), ff_silk_decode_superframe(), opus_decode_frame(), parse_postfilter(), and quant_band_template().

ff_opus_rc_enc_log()

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

Definition at line 131 of file rc.c.

Referenced by celt_enc_quant_pfilter(), celt_enc_tf(), celt_encode_frame(), exp_quant_coarse(), ff_celt_bitalloc(), and quant_band_template().

ff_opus_rc_dec_uint_step()

uint32_t ff_opus_rc_dec_uint_step	(	OpusRangeCoder *	rc,
		int	k0
	)

Definition at line 211 of file rc.c.

Referenced by quant_band_template().

ff_opus_rc_enc_uint_step()

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

Definition at line 226 of file rc.c.

Referenced by quant_band_template().

ff_opus_rc_dec_uint_tri()

uint32_t ff_opus_rc_dec_uint_tri	(	OpusRangeCoder *	rc,
		int	qn
	)

Definition at line 234 of file rc.c.

Referenced by quant_band_template().

ff_opus_rc_enc_uint_tri()

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

Definition at line 258 of file rc.c.

Referenced by quant_band_template().

ff_opus_rc_dec_uint()

uint32_t ff_opus_rc_dec_uint	(	OpusRangeCoder *	rc,
		uint32_t	size
	)

CELT: read a uniform distribution.

Definition at line 182 of file rc.c.

Referenced by celt_decode_pulses(), ff_celt_bitalloc(), opus_decode_frame(), parse_postfilter(), and quant_band_template().

ff_opus_rc_enc_uint()

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 rc.c.

Referenced by celt_enc_quant_pfilter(), celt_encode_pulses(), ff_celt_bitalloc(), and quant_band_template().

ff_opus_rc_get_raw()

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 rc.c.

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

ff_opus_rc_put_raw()

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 rc.c.

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

ff_opus_rc_dec_laplace()

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

Definition at line 275 of file rc.c.

Referenced by celt_decode_coarse_energy().

ff_opus_rc_enc_laplace()

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

Definition at line 314 of file rc.c.

Referenced by exp_quant_coarse().

ff_opus_rc_dec_init()

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

Definition at line 338 of file rc.c.

Referenced by opus_decode_frame(), and opus_decode_redundancy().

ff_opus_rc_dec_raw_init()

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

Definition at line 352 of file rc.c.

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

ff_opus_rc_enc_end()

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

Definition at line 360 of file rc.c.

Referenced by opus_packet_assembler().

ff_opus_rc_enc_init()

void ff_opus_rc_enc_init

(

OpusRangeCoder *

rc

)

Definition at line 402 of file rc.c.

Referenced by bands_dist(), and celt_encode_frame().