--- /dev/null
+#include "../libzmpeg3.h"
+#include <math.h>
+
+/* Bitrate indexes */
+int zaudio_decoder_layer_t::
+tabsel_123[2][3][16] = {
+ { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,},
+ {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,},
+ {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} },
+
+ { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,},
+ {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,},
+ {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} }
+};
+
+long zaudio_decoder_layer_t::
+freqs[9] = {
+ 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000
+};
+
+#ifdef USE_3DNOW
+float zaudio_decoder_layer_t:: decwin[2 * (512 + 32)];
+float zaudio_decoder_layer_t:: cos64[32];
+float zaudio_decoder_layer_t:: cos32[16];
+float zaudio_decoder_layer_t:: cos16[8];
+float zaudio_decoder_layer_t:: cos8[4];
+float zaudio_decoder_layer_t:: cos4[2];
+#else
+float zaudio_decoder_layer_t:: decwin[512 + 32];
+float zaudio_decoder_layer_t:: cos64[16];
+float zaudio_decoder_layer_t:: cos32[8];
+float zaudio_decoder_layer_t:: cos16[4];
+float zaudio_decoder_layer_t:: cos8[2];
+float zaudio_decoder_layer_t:: cos4[1];
+#endif
+
+float *zaudio_decoder_layer_t::
+pnts[] = {
+ zaudio_decoder_layer_t:: cos64,
+ zaudio_decoder_layer_t:: cos32,
+ zaudio_decoder_layer_t:: cos16,
+ zaudio_decoder_layer_t:: cos8,
+ zaudio_decoder_layer_t:: cos4
+};
+
+int zaudio_decoder_layer_t:: grp_3tab[32 * 3] = { 0, }; /* used: 27 */
+int zaudio_decoder_layer_t:: grp_5tab[128 * 3] = { 0, }; /* used: 125 */
+int zaudio_decoder_layer_t:: grp_9tab[1024 * 3] = { 0, }; /* used: 729 */
+float zaudio_decoder_layer_t:: muls[27][64]; /* also used by layer 1 */
+float zaudio_decoder_layer_t:: gainpow2[256 + 118 + 4];
+float zaudio_decoder_layer_t:: ispow[8207];
+float zaudio_decoder_layer_t:: aa_ca[8];
+float zaudio_decoder_layer_t:: aa_cs[8];
+float zaudio_decoder_layer_t:: win[4][36];
+float zaudio_decoder_layer_t:: win1[4][36];
+float zaudio_decoder_layer_t:: COS1[12][6];
+float zaudio_decoder_layer_t:: COS9[9];
+float zaudio_decoder_layer_t:: COS6_1;
+float zaudio_decoder_layer_t:: COS6_2;
+float zaudio_decoder_layer_t:: tfcos36[9];
+float zaudio_decoder_layer_t:: tfcos12[3];
+float zaudio_decoder_layer_t:: cos9[3];
+float zaudio_decoder_layer_t:: cos18[3];
+float zaudio_decoder_layer_t:: tan1_1[16];
+float zaudio_decoder_layer_t:: tan2_1[16];
+float zaudio_decoder_layer_t:: tan1_2[16];
+float zaudio_decoder_layer_t:: tan2_2[16];
+float zaudio_decoder_layer_t:: pow1_1[2][16];
+float zaudio_decoder_layer_t:: pow2_1[2][16];
+float zaudio_decoder_layer_t:: pow1_2[2][16];
+float zaudio_decoder_layer_t:: pow2_2[2][16];
+
+long zaudio_decoder_layer_t::
+intwinbase[] = {
+ 0, -1, -1, -1, -1, -1, -1, -2, -2, -2,
+ -2, -3, -3, -4, -4, -5, -5, -6, -7, -7,
+ -8, -9, -10, -11, -13, -14, -16, -17, -19, -21,
+ -24, -26, -29, -31, -35, -38, -41, -45, -49, -53,
+ -58, -63, -68, -73, -79, -85, -91, -97, -104, -111,
+ -117, -125, -132, -139, -147, -154, -161, -169, -176, -183,
+ -190, -196, -202, -208, -213, -218, -222, -225, -227, -228,
+ -228, -227, -224, -221, -215, -208, -200, -189, -177, -163,
+ -146, -127, -106, -83, -57, -29, 2, 36, 72, 111,
+ 153, 197, 244, 294, 347, 401, 459, 519, 581, 645,
+ 711, 779, 848, 919, 991, 1064, 1137, 1210, 1283, 1356,
+ 1428, 1498, 1567, 1634, 1698, 1759, 1817, 1870, 1919, 1962,
+ 2001, 2032, 2057, 2075, 2085, 2087, 2080, 2063, 2037, 2000,
+ 1952, 1893, 1822, 1739, 1644, 1535, 1414, 1280, 1131, 970,
+ 794, 605, 402, 185, -45, -288, -545, -814, -1095, -1388,
+ -1692, -2006, -2330, -2663, -3004, -3351, -3705, -4063, -4425, -4788,
+ -5153, -5517, -5879, -6237, -6589, -6935, -7271, -7597, -7910, -8209,
+ -8491, -8755, -8998, -9219, -9416, -9585, -9727, -9838, -9916, -9959,
+ -9966, -9935, -9863, -9750, -9592, -9389, -9139, -8840, -8492, -8092,
+ -7640, -7134, -6574, -5959, -5288, -4561, -3776, -2935, -2037, -1082,
+ -70, 998, 2122, 3300, 4533, 5818, 7154, 8540, 9975, 11455,
+ 12980, 14548, 16155, 17799, 19478, 21189, 22929, 24694, 26482, 28289,
+ 30112, 31947, 33791, 35640, 37489, 39336, 41176, 43006, 44821, 46617,
+ 48390, 50137, 51853, 53534, 55178, 56778, 58333, 59838, 61289, 62684,
+ 64019, 65290, 66494, 67629, 68692, 69679, 70590, 71420, 72169, 72835,
+ 73415, 73908, 74313, 74630, 74856, 74992, 75038 };
+
+int zaudio_decoder_layer_t::
+longLimit[9][23];
+int zaudio_decoder_layer_t::
+shortLimit[9][14];
+
+struct zaudio_decoder_layer_t::
+bandInfoStruct zaudio_decoder_layer_t::
+bandInfo[9] =
+{
+
+/* MPEG 1.0 */
+ { {0,4,8,12,16,20,24,30,36,44,52,62,74, 90,110,134,162,196,238,288,342,418,576},
+ {4,4,4,4,4,4,6,6,8, 8,10,12,16,20,24,28,34,42,50,54, 76,158},
+ {0,4*3,8*3,12*3,16*3,22*3,30*3,40*3,52*3,66*3, 84*3,106*3,136*3,192*3},
+ {4,4,4,4,6,8,10,12,14,18,22,30,56} } ,
+
+ { {0,4,8,12,16,20,24,30,36,42,50,60,72, 88,106,128,156,190,230,276,330,384,576},
+ {4,4,4,4,4,4,6,6,6, 8,10,12,16,18,22,28,34,40,46,54, 54,192},
+ {0,4*3,8*3,12*3,16*3,22*3,28*3,38*3,50*3,64*3, 80*3,100*3,126*3,192*3},
+ {4,4,4,4,6,6,10,12,14,16,20,26,66} } ,
+
+ { {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576} ,
+ {4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102, 26} ,
+ {0,4*3,8*3,12*3,16*3,22*3,30*3,42*3,58*3,78*3,104*3,138*3,180*3,192*3} ,
+ {4,4,4,4,6,8,12,16,20,26,34,42,12} } ,
+
+/* MPEG 2.0 */
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
+ {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } ,
+ {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} ,
+ {4,4,4,6,6,8,10,14,18,26,32,42,18 } } ,
+
+ { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576},
+ {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,52,64,70,76,36 } ,
+ {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,136*3,180*3,192*3} ,
+ {4,4,4,6,8,10,12,14,18,24,32,44,12 } } ,
+
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
+ {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 },
+ {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,134*3,174*3,192*3},
+ {4,4,4,6,8,10,12,14,18,24,30,40,18 } } ,
+/* MPEG 2.5 */
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} ,
+ {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54},
+ {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
+ {4,4,4,6,8,10,12,14,18,24,30,40,18} },
+ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} ,
+ {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54},
+ {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
+ {4,4,4,6,8,10,12,14,18,24,30,40,18} },
+ { {0,12,24,36,48,60,72,88,108,132,160,192,232,280,336,400,476,566,568,570,572,574,576},
+ {12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2},
+ {0, 24, 48, 72,108,156,216,288,372,480,486,492,498,576},
+ {8,8,8,12,16,20,24,28,36,2,2,2,26} } ,
+};
+
+int zaudio_decoder_layer_t:: mapbuf0[9][152];
+int zaudio_decoder_layer_t:: mapbuf1[9][156];
+int zaudio_decoder_layer_t:: mapbuf2[9][44];
+int *zaudio_decoder_layer_t:: map[9][3];
+int *zaudio_decoder_layer_t:: mapend[9][3];
+
+unsigned int zaudio_decoder_layer_t:: n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */
+unsigned int zaudio_decoder_layer_t:: i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */
+
+int zaudio_decoder_layer_t::
+init_layer2()
+{
+ static double mulmul[27] = {
+ 0.0 , -2.0/3.0 , 2.0/3.0 ,
+ 2.0/7.0 , 2.0/15.0 , 2.0/31.0, 2.0/63.0 , 2.0/127.0 , 2.0/255.0 ,
+ 2.0/511.0 , 2.0/1023.0 , 2.0/2047.0 , 2.0/4095.0 , 2.0/8191.0 ,
+ 2.0/16383.0 , 2.0/32767.0 , 2.0/65535.0 ,
+ -4.0/5.0 , -2.0/5.0 , 2.0/5.0, 4.0/5.0 ,
+ -8.0/9.0 , -4.0/9.0 , -2.0/9.0 , 2.0/9.0 , 4.0/9.0 , 8.0/9.0
+ };
+ static int base[3][9] = {
+ { 1 , 0, 2 , } ,
+ { 17, 18, 0 , 19, 20 , } ,
+ { 21, 1, 22, 23, 0, 24, 25, 2, 26 }
+ };
+ static int tablen[3] = { 3, 5, 9 };
+ static int *itable, *tables[3] = { grp_3tab, grp_5tab, grp_9tab };
+ int i, j, k, l, len;
+ float *table;
+
+ for(i = 0; i < 3; i++)
+ {
+ itable = tables[i];
+ len = tablen[i];
+ for(j = 0; j < len; j++)
+ for(k = 0; k < len; k++)
+ for(l = 0; l < len; l++)
+ {
+ *itable++ = base[i][l];
+ *itable++ = base[i][k];
+ *itable++ = base[i][j];
+ }
+ }
+
+ for(k = 0; k < 27; k++)
+ {
+ double m = mulmul[k];
+ table = muls[k];
+ for(j = 3, i = 0; i < 63; i++, j--)
+ *table++ = m * pow(2.0, (double)j / 3.0);
+ *table++ = 0.0;
+ }
+ return 0;
+}
+
+int zaudio_decoder_layer_t::
+init_layer3()
+{
+ int i, j, k, l;
+ int down_sample_sblimit = 32;
+
+ mp3_block[0][0][0] = 0;
+ mp3_blc[0] = 0;
+ mp3_blc[1] = 0;
+
+ for(i = -256; i < 118 + 4; i++)
+ gainpow2[i + 256] = pow((double)2.0, -0.25 * (double)(i + 210));
+
+ for(i = 0; i < 8207; i++)
+ ispow[i] = pow((double)i, (double)4.0 / 3.0);
+
+ for(i = 0; i < 8; i++)
+ {
+ static double Ci[8] = {-0.6,-0.535,-0.33,-0.185,-0.095,-0.041,-0.0142,-0.0037};
+ double sq = sqrt(1.0+Ci[i]*Ci[i]);
+ aa_cs[i] = 1.0/sq;
+ aa_ca[i] = Ci[i]/sq;
+ }
+
+ for( i=0; i<18; ++i ) {
+ win[0][i] =
+ win[1][i] = 0.5 * sin( M_PI/72.0 * (double)(2*(i+ 0)+1)) /
+ cos( M_PI * (double)(2*(i+ 0)+19) / 72.0);
+ win[0][i + 18] =
+ win[3][i + 18] = 0.5 * sin( M_PI/72.0 * (double)(2*(i+18)+1)) /
+ cos( M_PI * (double)(2*(i+18)+19) / 72.0);
+ }
+ for( i=0; i<6; ++i ) {
+ win[1][i + 18] = 0.5 / cos( M_PI * (double)(2*(i+18)+19) / 72.0);
+ win[3][i + 12] = 0.5 / cos( M_PI * (double)(2*(i+12)+19) / 72.0);
+ win[1][i + 24] = 0.5 * sin( M_PI/24.0 * (double)(2*(i+ 0)+13)) /
+ cos( M_PI * (double)(2*(i+24)+19) / 72.0);
+ win[1][i + 30] = win[3][i] = 0.0;
+ win[3][i + 6 ] = 0.5 * sin( M_PI/24.0 * (double)(2*(i+ 0)+1)) /
+ cos( M_PI * (double)(2*(i+ 6)+19) / 72.0);
+ }
+
+ for(i = 0; i < 9; i++)
+ COS9[i] = cos(M_PI / 18.0 * (double)i);
+
+ for(i = 0; i < 9; i++)
+ tfcos36[i] = 0.5 / cos (M_PI * (double) (i*2+1) / 36.0);
+ for(i = 0; i < 3; i++)
+ tfcos12[i] = 0.5 / cos (M_PI * (double) (i*2+1) / 12.0);
+
+ COS6_1 = cos( M_PI / 6.0 * (double) 1);
+ COS6_2 = cos( M_PI / 6.0 * (double) 2);
+
+ cos9[0] = cos(1.0 * M_PI / 9.0);
+ cos9[1] = cos(5.0 * M_PI / 9.0);
+ cos9[2] = cos(7.0 * M_PI / 9.0);
+ cos18[0] = cos(1.0 * M_PI / 18.0);
+ cos18[1] = cos(11.0 * M_PI / 18.0);
+ cos18[2] = cos(13.0 * M_PI / 18.0);
+
+ for( i=0; i < 12; ++i ) {
+ win[2][i] = 0.5 * sin(M_PI / 24.0 * (double)(2*i + 1)) /
+ cos(M_PI * (double)(2*i + 7) / 24.0);
+ for( j=0; j < 6; ++j )
+ COS1[i][j] = cos(M_PI / 24.0 * (double)((2*i + 7) * (2*j + 1)));
+ }
+
+ for( j=0; j < 4; j++) {
+ static int len[4] = {36, 36, 12, 36};
+ for(i = 0; i < len[j]; i+=2 ) win1[j][i] = win[j][i];
+ for(i = 1; i < len[j]; i+=2 ) win1[j][i] = -win[j][i];
+ }
+
+ for( i=0; i < 16; ++i ) {
+ double t = tan( (double) i * M_PI / 12.0 );
+ tan1_1[i] = t / (1.0 + t);
+ tan2_1[i] = 1.0 / (1.0 + t);
+ tan1_2[i] = M_SQRT2 * t / (1.0 + t);
+ tan2_2[i] = M_SQRT2 / (1.0 + t);
+
+ for( j=0; j < 2; ++j ) {
+ double base = pow(2.0, -0.25 * (j + 1.0));
+ double p1 = 1.0,p2 = 1.0;
+ if( i > 0 ) {
+ if( i & 1 )
+ p1 = pow(base, (i + 1.0) * 0.5);
+ else
+ p2 = pow(base, i * 0.5);
+ }
+ pow1_1[j][i] = p1;
+ pow2_1[j][i] = p2;
+ pow1_2[j][i] = M_SQRT2 * p1;
+ pow2_2[j][i] = M_SQRT2 * p2;
+ }
+ }
+
+ for( j=0; j < 9; ++j ) {
+ bandInfoStruct *bi = &bandInfo[j];
+ int cb, lwin;
+ int *mp = map[j][0] = mapbuf0[j];
+ int *bdf = bi->longDiff;
+ for( i=0, cb=0; cb < 8; ++cb, i+=*bdf++ ) {
+ *mp++ = *bdf >> 1;
+ *mp++ = i;
+ *mp++ = 3;
+ *mp++ = cb;
+ }
+ bdf = bi->shortDiff + 3;
+ for( cb=3; cb < 13; ++cb ) {
+ int l = (*bdf++) >> 1;
+ for( lwin=0; lwin < 3; ++lwin ) {
+ *mp++ = l;
+ *mp++ = i + lwin;
+ *mp++ = lwin;
+ *mp++ = cb;
+ }
+ i += 6 * l;
+ }
+ mapend[j][0] = mp;
+
+ mp = map[j][1] = mapbuf1[j];
+ bdf = bi->shortDiff+0;
+ for( i=0,cb=0; cb < 13; ++cb ) {
+ int l = (*bdf++) >> 1;
+ for( lwin=0; lwin < 3; ++lwin ) {
+ *mp++ = l;
+ *mp++ = i + lwin;
+ *mp++ = lwin;
+ *mp++ = cb;
+ }
+ i += 6 * l;
+ }
+ mapend[j][1] = mp;
+
+ mp = map[j][2] = mapbuf2[j];
+ bdf = bi->longDiff;
+ for( cb=0; cb < 22 ; ++cb ) {
+ *mp++ = (*bdf++) >> 1;
+ *mp++ = cb;
+ }
+ mapend[j][2] = mp;
+ }
+
+ for( j=0; j < 9; ++j ) {
+ for( i=0; i < 23; ++i ) {
+ longLimit[j][i] = (bandInfo[j].longIdx[i] - 1 + 8) / 18 + 1;
+ if( longLimit[j][i] > down_sample_sblimit )
+ longLimit[j][i] = down_sample_sblimit;
+ }
+ for( i=0; i < 14; ++i ) {
+ shortLimit[j][i] = (bandInfo[j].shortIdx[i] - 1) / 18 + 1;
+ if( shortLimit[j][i] > down_sample_sblimit )
+ shortLimit[j][i] = down_sample_sblimit;
+ }
+ }
+
+ for( i=0; i < 5; ++i ) {
+ for( j=0; j < 6; ++j ) {
+ for( k=0; k < 6; ++k ) {
+ int n = k + j * 6 + i * 36;
+ i_slen2[n] = i | (j << 3) | (k << 6) | (3 << 12);
+ }
+ }
+ }
+ for( i=0; i < 4; ++i ) {
+ for( j=0; j < 4; ++j ) {
+ for( k=0; k < 4; ++k ) {
+ int n = k + j * 4 + i * 16;
+ i_slen2[n+180] = i | (j << 3) | (k << 6) | (4 << 12);
+ }
+ }
+ }
+ for( i=0; i < 4; ++i ) {
+ for( j=0; j < 3; ++j ) {
+ int n = j + i * 3;
+ i_slen2[n + 244] = i | (j << 3) | (5 << 12);
+ n_slen2[n + 500] = i | (j << 3) | (2 << 12) | (1 << 15);
+ }
+ }
+ for( i=0; i < 5; ++i ) {
+ for( j=0; j < 5; ++j ) {
+ for( k=0; k < 4; ++k ) {
+ for( l=0; l < 4; ++l ) {
+ int n = l + k * 4 + j * 16 + i * 80;
+ n_slen2[n] = i | (j << 3) | ( k << 6) | (l << 9) | (0 << 12);
+ }
+ }
+ }
+ }
+ for( i=0; i < 5; ++i ) {
+ for( j=0; j < 5; ++j ) {
+ for( k=0; k < 4; ++k ) {
+ int n = k + j * 4 + i * 20;
+ n_slen2[n + 400] = i | (j << 3) | (k << 6) | (1 << 12);
+ }
+ }
+ }
+ return 0;
+}
+
+int zaudio_decoder_layer_t::
+init_decode_tables()
+{
+ static int inited = 0;
+ if( inited ) return 0;
+ inited = 1;
+ int i, j, k, kr, divv;
+ float *costab;
+ int idx;
+ long scaleval = 1;
+
+ for( i=0; i < 5; ++i ) {
+ kr = 0x10 >> i;
+ divv = 0x40 >> i;
+ costab = pnts[i];
+ for( k=0; k < kr; ++k )
+ costab[k] = 1.0 / (2.0 * cos(M_PI * ((double)k * 2.0 + 1.0) / (double)divv));
+
+#ifdef USE_3DNOW
+ for( k=0; k < kr; ++k )
+ costab[k + kr] = -costab[k];
+#endif
+ }
+
+ idx = 0;
+ scaleval = -scaleval;
+ for( i=0, j=0; i < 256; ++i, ++j, idx+=32 ) {
+ if( idx < 512 + 16 ) decwin[idx+16] = decwin[idx] =
+ (double)intwinbase[j] / 65536.0 * (double)scaleval;
+ if( i % 32 == 31 ) idx -= 1023;
+ if( i % 64 == 63 ) scaleval = -scaleval;
+ }
+
+ for( ; i < 512; ++i, --j, idx+=32 ) {
+ if( idx < 512 + 16 ) decwin[idx + 16] = decwin[idx] =
+ (double)intwinbase[j] / 65536.0 * (double)scaleval;
+ if( i % 32 == 31 ) idx -= 1023;
+ if( i % 64 == 63 ) scaleval = -scaleval;
+ }
+
+#ifdef USE_3DNOW
+ if( !param.down_sample ) {
+ for( i=0; i < 512 + 32; ++i ) {
+ decwin[512 + 31 - i] *= 65536.0; /* allows faster clipping in 3dnow code */
+ decwin[512 + 32 + i] = decwin[512 + 31 - i];
+ }
+ }
+#endif
+
+/* Initialize AC3 */
+// imdct_init();
+/* Initialize MPEG */
+ /* inits also shared tables with layer1 */
+ init_layer2();
+ init_layer3();
+ return 0;
+}
+
projects / goodguy / history.git / blobdiff