aacsbrhfadj.c 文件参考

#include "aacsbr.h"
#include "aacassembly.h"

宏定义
#define	GBOOST_MAX   0x2830afd3 /* Q28, 1.584893192 squared */
#define	ACC_SCALE   6

函数
static void	EstimateEnvelope (PSInfoSBR *psi, SBRHeader *sbrHdr, SBRGrid *sbrGrid, SBRFreq *sbrFreq, int env)
static int	GetSMapped (SBRGrid *sbrGrid, SBRFreq *sbrFreq, SBRChan *sbrChan, int env, int band, int la)
static void	CalcMaxGain (PSInfoSBR *psi, SBRHeader *sbrHdr, SBRGrid *sbrGrid, SBRFreq *sbrFreq, int ch, int env, int lim, int fbitsDQ)
static void	CalcNoiseDivFactors (int q, int *qp1Inv, int *qqp1Inv)
static void	CalcComponentGains (PSInfoSBR *psi, SBRGrid *sbrGrid, SBRFreq *sbrFreq, SBRChan *sbrChan, int ch, int env, int lim, int fbitsDQ)
static void	ApplyBoost (PSInfoSBR *psi, SBRFreq *sbrFreq, int lim, int fbitsDQ)
static void	CalcGain (PSInfoSBR *psi, SBRHeader *sbrHdr, SBRGrid *sbrGrid, SBRFreq *sbrFreq, SBRChan *sbrChan, int ch, int env)
static void	MapHF (PSInfoSBR *psi, SBRHeader *sbrHdr, SBRGrid *sbrGrid, SBRFreq *sbrFreq, SBRChan *sbrChan, int env, int hfReset)
void STATNAME()	AdjustHighFreq (PSInfoSBR *psi, SBRHeader *sbrHdr, SBRGrid *sbrGrid, SBRFreq *sbrFreq, SBRChan *sbrChan, int ch)

变量
static const int	invBandTab [64]
static const int	limGainTab [4] = {0x20138ca7, 0x40000000, 0x7fb27dce, 0x80000000}
static const int	hSmoothCoef [5]

宏定义说明

ACC_SCALE

#define ACC_SCALE   6

GBOOST_MAX

#define GBOOST_MAX   0x2830afd3 /* Q28, 1.584893192 squared */

函数说明

AdjustHighFreq()

void STATNAME() AdjustHighFreq	(	PSInfoSBR *	psi,
		SBRHeader *	sbrHdr,
		SBRGrid *	sbrGrid,
		SBRFreq *	sbrFreq,
		SBRChan *	sbrChan,
		int	ch
	)

ApplyBoost()

static void ApplyBoost ( PSInfoSBR *  psi, SBRFreq *  sbrFreq, int  lim, int  fbitsDQ  )

static

CalcComponentGains()

static void CalcComponentGains ( PSInfoSBR *  psi, SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, SBRChan *  sbrChan, int  ch, int  env, int  lim, int  fbitsDQ  )

static

CalcGain()

static void CalcGain ( PSInfoSBR *  psi, SBRHeader *  sbrHdr, SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, SBRChan *  sbrChan, int  ch, int  env  )

static

CalcMaxGain()

static void CalcMaxGain ( PSInfoSBR *  psi, SBRHeader *  sbrHdr, SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, int  ch, int  env, int  lim, int  fbitsDQ  )

static

CalcNoiseDivFactors()

static void CalcNoiseDivFactors ( int  q, int *  qp1Inv, int *  qqp1Inv  )

static

EstimateEnvelope()

static void EstimateEnvelope ( PSInfoSBR *  psi, SBRHeader *  sbrHdr, SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, int  env  )

static

GetSMapped()

static int GetSMapped ( SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, SBRChan *  sbrChan, int  env, int  band, int  la  )

static

MapHF()

static void MapHF ( PSInfoSBR *  psi, SBRHeader *  sbrHdr, SBRGrid *  sbrGrid, SBRFreq *  sbrFreq, SBRChan *  sbrChan, int  env, int  hfReset  )

static

变量说明

hSmoothCoef

const int hSmoothCoef[5]

static

初始值:

= {
    0x2aaaaaab, 0x2697a512, 0x1becfa68, 0x0ebdb043, 0x04130598, 
}

invBandTab

const int invBandTab[64]

static

初始值:

= {
    0x7fffffff, 0x40000000, 0x2aaaaaab, 0x20000000, 0x1999999a, 0x15555555, 0x12492492, 0x10000000, 
    0x0e38e38e, 0x0ccccccd, 0x0ba2e8ba, 0x0aaaaaab, 0x09d89d8a, 0x09249249, 0x08888889, 0x08000000, 
    0x07878788, 0x071c71c7, 0x06bca1af, 0x06666666, 0x06186186, 0x05d1745d, 0x0590b216, 0x05555555, 
    0x051eb852, 0x04ec4ec5, 0x04bda12f, 0x04924925, 0x0469ee58, 0x04444444, 0x04210842, 0x04000000, 
    0x03e0f83e, 0x03c3c3c4, 0x03a83a84, 0x038e38e4, 0x03759f23, 0x035e50d8, 0x03483483, 0x03333333, 
    0x031f3832, 0x030c30c3, 0x02fa0be8, 0x02e8ba2f, 0x02d82d83, 0x02c8590b, 0x02b93105, 0x02aaaaab, 
    0x029cbc15, 0x028f5c29, 0x02828283, 0x02762762, 0x026a439f, 0x025ed098, 0x0253c825, 0x02492492, 
    0x023ee090, 0x0234f72c, 0x022b63cc, 0x02222222, 0x02192e2a, 0x02108421, 0x02082082, 0x02000000, 
}

limGainTab

const int limGainTab[4] = {0x20138ca7, 0x40000000, 0x7fb27dce, 0x80000000}

static