aactabs.c 文件参考

#include "aaccommon.h"

变量
const int	sampRateTab [NUM_SAMPLE_RATES]
const int	predSFBMax [NUM_SAMPLE_RATES]
const int	channelMapTab [NUM_DEF_CHAN_MAPS]
const int	elementNumChans [NUM_ELEMENTS]
const unsigned char	sfBandTotalShort [NUM_SAMPLE_RATES]
const unsigned char	sfBandTotalLong [NUM_SAMPLE_RATES]
const int	sfBandTabShortOffset [NUM_SAMPLE_RATES] = {0, 0, 0, 13, 13, 13, 28, 28, 44, 44, 44, 60}
const int	sfBandTabShortTabSize [NUM_SAMPLE_RATES] = {12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15}
const short	sfBandTabShort [76]
const int	sfBandTabLongOffset [NUM_SAMPLE_RATES] = {0, 0, 42, 90, 90, 140, 192, 192, 240, 240, 240, 284}
const int	sfBandTabLongTabSize [NUM_SAMPLE_RATES] = {41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40}
const short	sfBandTabLong [325]
const int	tnsMaxBandsShortOffset [AAC_NUM_PROFILES] = {0, 0, 12}
const unsigned char	tnsMaxBandsShort [2 *NUM_SAMPLE_RATES]
const unsigned char	tnsMaxOrderShort [AAC_NUM_PROFILES] = {7, 7, 7}
const int	tnsMaxBandsLongOffset [AAC_NUM_PROFILES] = {0, 0, 12}
const unsigned char	tnsMaxBandsLong [2 *NUM_SAMPLE_RATES]
const unsigned char	tnsMaxOrderLong [AAC_NUM_PROFILES] = {20, 12, 12}

变量说明

channelMapTab

const int channelMapTab[NUM_DEF_CHAN_MAPS]

初始值:

= {
    -1, 1, 2, 3, 4, 5, 6, 8
}

elementNumChans

const int elementNumChans[NUM_ELEMENTS]

初始值:

= {
    1, 2, 0, 1, 0, 0, 0, 0
}

predSFBMax

const int predSFBMax[NUM_SAMPLE_RATES]

初始值:

= {
    33, 33, 38, 40, 40, 40, 41, 41, 37, 37, 37, 34
}

sampRateTab

const int sampRateTab[NUM_SAMPLE_RATES]

初始值:

= {
    96000, 88200, 64000, 48000, 44100, 32000, 
    24000, 22050, 16000, 12000, 11025,  8000
}

sfBandTabLong

const short sfBandTabLong[325]

sfBandTabLongOffset

const int sfBandTabLongOffset[NUM_SAMPLE_RATES] = {0, 0, 42, 90, 90, 140, 192, 192, 240, 240, 240, 284}

sfBandTabLongTabSize

const int sfBandTabLongTabSize[NUM_SAMPLE_RATES] = {41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40}

sfBandTabShort

const short sfBandTabShort[76]

初始值:

= {
    
    0,   4,   8,  12,  16,  20,  24,  32,  40,  48,  64,  92, 128,

    
    0,   4,   8,  12,  16,  20,  28,  36,  44,  56,  68,  80,  96, 112, 128,

    
    0,   4,   8,  12,  16,  20,  24,  28,  36,  44,  52,  64,  76,  92, 108, 128,

    
    0,   4,   8,  12,  16,  20,  24,  28,  32,  40,  48,  60,  72,  88, 108, 128,

    
    0,   4,   8,  12,  16,  20,  24,  28,  36,  44,  52,  60,  72,  88, 108, 128
}

sfBandTabShortOffset

const int sfBandTabShortOffset[NUM_SAMPLE_RATES] = {0, 0, 0, 13, 13, 13, 28, 28, 44, 44, 44, 60}

sfBandTabShortTabSize

const int sfBandTabShortTabSize[NUM_SAMPLE_RATES] = {12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15}

sfBandTotalLong

const unsigned char sfBandTotalLong[NUM_SAMPLE_RATES]

初始值:

= {
    41, 41, 47, 49, 49, 51, 47, 47, 43, 43, 43, 40
}

sfBandTotalShort

const unsigned char sfBandTotalShort[NUM_SAMPLE_RATES]

初始值:

= {
    12, 12, 12, 14, 14, 14, 15, 15, 15, 15, 15, 15
}

tnsMaxBandsLong

const unsigned char tnsMaxBandsLong[2 *NUM_SAMPLE_RATES]

初始值:

= {
    31, 31, 34, 40, 42, 51, 46, 46, 42, 42, 42, 39,     
    28, 28, 27, 26, 26, 26, 29, 29, 23, 23, 23, 19,     
}

tnsMaxBandsLongOffset

const int tnsMaxBandsLongOffset[AAC_NUM_PROFILES] = {0, 0, 12}

tnsMaxBandsShort

const unsigned char tnsMaxBandsShort[2 *NUM_SAMPLE_RATES]

初始值:

= {
     9,  9, 10, 14, 14, 14, 14, 14, 14, 14, 14, 14,     
     7,  7,  7,  6,  6,  6,  7,  7,  8,  8,  8,  7      
}

tnsMaxBandsShortOffset

const int tnsMaxBandsShortOffset[AAC_NUM_PROFILES] = {0, 0, 12}

tnsMaxOrderLong

const unsigned char tnsMaxOrderLong[AAC_NUM_PROFILES] = {20, 12, 12}

tnsMaxOrderShort

const unsigned char tnsMaxOrderShort[AAC_NUM_PROFILES] = {7, 7, 7}