* TODO :
* - Etudier /usr/include/asm/bitops.h d'un peu plus près, bien qu'il ne me
* semble pas être possible d'utiliser ces fonctions ici
- * - extern inline ? #define ?
* - N'y aurait-t-il pas moyen de se passer d'un buffer de bits, en travaillant
* directement sur le flux PES ?
*/
******************************************************************************/
adec_thread_t * adec_CreateThread ( input_thread_t * p_input /* !! , aout_thread_t * p_aout !! */ );
void adec_DestroyThread ( adec_thread_t * p_adec );
-
-/* Fast 32 points Discrete Cosine Transform (289 additions and multiplications)
- F(u)=alpha(u)*SUM(x=0, x<N) f(x)*cos((2x+1)u*pi/2N)
- where alpha(u) = sqrt(2)/N if u=0, 2/N otherwise.
- See fastdct.ps, and fast.tar.gz for a (Fortran :) implementation. */
-static /* __inline__ */ void DCT32(float *x, adec_bank_t *b)
-{
- /* cosine coefficients */
- static const float c2 = .70710678118655;
- static const float c3 = .54119610014620;
- static const float c4 = -1.3065629648764;
- static const float c5 = .50979557910416;
- static const float c6 = .89997622313642;
- static const float c7 = -2.5629154477415;
- static const float c8 = -.60134488693505;
- static const float c9 = .50241928618816;
- static const float c10 = .56694403481636;
- static const float c11 = .78815462345125;
- static const float c12 = 1.7224470982383;
- static const float c13 = -5.1011486186892;
- static const float c14 = -1.0606776859903;
- static const float c15 = -.64682178335999;
- static const float c16 = -.52249861493969;
- static const float c17 = .50060299823520;
- static const float c18 = .51544730992262;
- static const float c19 = .55310389603444;
- static const float c20 = .62250412303566;
- static const float c21 = .74453627100230;
- static const float c22 = .97256823786196;
- static const float c23 = 1.4841646163142;
- static const float c24 = 3.4076084184687;
- static const float c25 = -10.190008123548;
- static const float c26 = -2.0577810099534;
- static const float c27 = -1.1694399334329;
- static const float c28 = -.83934964541553;
- static const float c29 = -.67480834145501;
- static const float c30 = -.58293496820613;
- static const float c31 = -.53104259108978;
- static const float c32 = -.50547095989754;
-
- /* temporary variables */
- float t1 , t2 , t3 , t4 , t5 , t6 , t7 , t8 ,
- t9 , t10 , t11 , t12 , t13 , t14 , t15 , t16 ,
- t17 , t18 , t19 , t20 , t21 , t22 , t23 , t24 ,
- t25 , t26 , t27 , t28 , t29 , t30 , t31 , t32 ,
- tt1 , tt2 , tt3 , tt4 , tt5 , tt6 , tt7 , tt8 ,
- tt9 , tt10, tt11, tt12, tt13, tt14, tt15, tt16,
- tt17, tt18, tt19, tt20, tt21, tt22, tt23, tt24,
- tt25, tt26, tt27, tt28, tt29, tt30, tt31, tt32, *y;
-
- /* We unrolled the loops */
- /* Odd-even ordering is integrated before the 1st stage */
- t17 = c17 * (x[0] - x[31]);
- t1 = x[0] + x[31];
- t18 = c18 * (x[2] - x[29]);
- t2 = x[2] + x[29];
- t19 = c19 * (x[4] - x[27]);
- t3 = x[4] + x[27];
- t20 = c20 * (x[6] - x[25]);
- t4 = x[6] + x[25];
- t21 = c21 * (x[8] - x[23]);
- t5 = x[8] + x[23];
- t22 = c22 * (x[10] - x[21]);
- t6 = x[10] + x[21];
- t23 = c23 * (x[12] - x[19]);
- t7 = x[12] + x[19];
- t24 = c24 * (x[14] - x[17]);
- t8 = x[14] + x[17];
- t25 = c25 * (x[16] - x[15]);
- t9 = x[16] + x[15];
- t26 = c26 * (x[18] - x[13]);
- t10 = x[18] + x[13];
- t27 = c27 * (x[20] - x[11]);
- t11 = x[20] + x[11];
- t28 = c28 * (x[22] - x[9]);
- t12 = x[22] + x[9];
- t29 = c29 * (x[24] - x[7]);
- t13 = x[24] + x[7];
- t30 = c30 * (x[26] - x[5]);
- t14 = x[26] + x[5];
- t31 = c31 * (x[28] - x[3]);
- t15 = x[28] + x[3];
- t32 = c32 * (x[30] - x[1]);
- t16 = x[30] + x[1];
- /* 2nd stage */
- tt9 = c9 * (t1 - t9 );
- tt1 = t1 + t9;
- tt10 = c10 * (t2 - t10);
- tt2 = t2 + t10;
- tt11 = c11 * (t3 - t11);
- tt3 = t3 + t11;
- tt12 = c12 * (t4 - t12);
- tt4 = t4 + t12;
- tt13 = c13 * (t5 - t13);
- tt5 = t5 + t13;
- tt14 = c14 * (t6 - t14);
- tt6 = t6 + t14;
- tt15 = c15 * (t7 - t15);
- tt7 = t7 + t15;
- tt16 = c16 * (t8 - t16);
- tt8 = t8 + t16;
- tt25 = c9 * (t17 - t25);
- tt17 = t17 + t25;
- tt26 = c10 * (t18 - t26);
- tt18 = t18 + t26;
- tt27 = c11 * (t19 - t27);
- tt19 = t19 + t27;
- tt28 = c12 * (t20 - t28);
- tt20 = t20 + t28;
- tt29 = c13 * (t21 - t29);
- tt21 = t21 + t29;
- tt30 = c14 * (t22 - t30);
- tt22 = t22 + t30;
- tt31 = c15 * (t23 - t31);
- tt23 = t23 + t31;
- tt32 = c16 * (t24 - t32);
- tt24 = t24 + t32;
- /* 3rd stage */
- t5 = c5 * (tt1 - tt5 );
- t1 = tt1 + tt5;
- t6 = c6 * (tt2 - tt6 );
- t2 = tt2 + tt6;
- t7 = c7 * (tt3 - tt7 );
- t3 = tt3 + tt7;
- t8 = c8 * (tt4 - tt8 );
- t4 = tt4 + tt8;
- t13 = c5 * (tt9 - tt13);
- t9 = tt9 + tt13;
- t14 = c6 * (tt10 - tt14);
- t10 = tt10 + tt14;
- t15 = c7 * (tt11 - tt15);
- t11 = tt11 + tt15;
- t16 = c8 * (tt12 - tt16);
- t12 = tt12 + tt16;
- t21 = c5 * (tt17 - tt21);
- t17 = tt17 + tt21;
- t22 = c6 * (tt18 - tt22);
- t18 = tt18 + tt22;
- t23 = c7 * (tt19 - tt23);
- t19 = tt19 + tt23;
- t24 = c8 * (tt20 - tt24);
- t20 = tt20 + tt24;
- t29 = c5 * (tt25 - tt29);
- t25 = tt25 + tt29;
- t30 = c6 * (tt26 - tt30);
- t26 = tt26 + tt30;
- t31 = c7 * (tt27 - tt31);
- t27 = tt27 + tt31;
- t32 = c8 * (tt28 - tt32);
- t28 = tt28 + tt32;
- /* 4th stage */
- tt3 = c3 * (t1 - t3 );
- tt1 = t1 + t3;
- tt4 = c4 * (t2 - t4 );
- tt2 = t2 + t4;
- tt7 = c3 * (t5 - t7 );
- tt5 = t5 + t7;
- tt8 = c4 * (t6 - t8 );
- tt6 = t6 + t8;
- tt11 = c3 * (t9 - t11);
- tt9 = t9 + t11;
- tt12 = c4 * (t10 - t12);
- tt10 = t10 + t12;
- tt15 = c3 * (t13 - t15);
- tt13 = t13 + t15;
- tt16 = c4 * (t14 - t16);
- tt14 = t14 + t16;
- tt19 = c3 * (t17 - t19);
- tt17 = t17 + t19;
- tt20 = c4 * (t18 - t20);
- tt18 = t18 + t20;
- tt23 = c3 * (t21 - t23);
- tt21 = t21 + t23;
- tt24 = c4 * (t22 - t24);
- tt22 = t22 + t24;
- tt27 = c3 * (t25 - t27);
- tt25 = t25 + t27;
- tt28 = c4 * (t26 - t28);
- tt26 = t26 + t28;
- tt31 = c3 * (t29 - t31);
- tt29 = t29 + t31;
- tt32 = c4 * (t30 - t32);
- tt30 = t30 + t32;
- /* Bit-reverse ordering is integrated after the 5th stage */
- /* Begin to split the result of the DCT (t1 to t32) in the filter bank */
- x = b->actual + b->pos;
- y = (b->actual == b->v1 ? b->v2 : b->v1) + b->pos;
- x[0] = -(y[0] = c2 * (tt1 - tt2 )); /* t17 */
- x[256] = 0; y[256] = tt1 + tt2; /* t1 */
- t25 = c2 * (tt3 - tt4 );
- t9 = tt3 + tt4;
- t21 = c2 * (tt5 - tt6 );
- t5 = tt5 + tt6;
- t29 = c2 * (tt7 - tt8 );
- t13 = tt7 + tt8;
- t19 = c2 * (tt9 - tt10);
- t3 = tt9 + tt10;
- t27 = c2 * (tt11 - tt12);
- t11 = tt11 + tt12;
- t23 = c2 * (tt13 - tt14);
- t7 = tt13 + tt14;
- t31 = c2 * (tt15 - tt16);
- t15 = tt15 + tt16;
- t18 = c2 * (tt17 - tt18);
- t2 = tt17 + tt18;
- t26 = c2 * (tt19 - tt20);
- t10 = tt19 + tt20;
- t22 = c2 * (tt21 - tt22);
- t6 = tt21 + tt22;
- t30 = c2 * (tt23 - tt24);
- t14 = tt23 + tt24;
- t20 = c2 * (tt25 - tt26);
- t4 = tt25 + tt26;
- t28 = c2 * (tt27 - tt28);
- t12 = tt27 + tt28;
- t24 = c2 * (tt29 - tt30);
- t8 = tt29 + tt30;
- t32 = c2 * (tt31 - tt32);
- t16 = tt31 + tt32;
- /* Do the sums */
- /* Keep on splitting the result */
- y[384] = y[128] = t9 - (x[128] = -(x[384] = t25)); /* t25, t9 */
- t10 += t26;
- t11 += t27;
- t12 += t28;
- t13 += t29;
- t14 += t30;
- t15 += t31;
- t16 += t32;
- y[320] = y[192] = t5 + t13; /* t5 */
- y[448] = y[64] = t13 + t21; /* t13 */
- x[64] = -(x[448] = t21 - (x[192] = -(x[320] = t29))); /* t29, t21 */
- t6 += t14;
- t14 += t22;
- t22 += t30;
- t7 += t15;
- t15 += t23;
- t23 += t31;
- t8 += t16;
- t16 += t24;
- t24 += t32;
- y[288] = y[224] = t3 + t7; /* t3 */
- y[352] = y[160] = t7 + t11; /* t7 */
- y[416] = y[96] = t11 + t15; /* t11 */
- y[480] = y[32] = t15 + t19; /* t15 */
- x[32] = -(x[480] = t19 + t23); /* t19 */
- x[96] = -(x[416] = t23 + t27); /* t23 */
- x[160] = -(x[352] = t27 - (x[224] = -(x[288] = t31))); /* t31, t27 */
- t4 += t8 ;
- t8 += t12;
- t12 += t16;
- t16 += t20;
- t20 += t24;
- t24 += t28;
- t28 += t32;
- y[272] = y[240] = t2 + t4; /* t2 */
- y[304] = y[208] = t4 + t6; /* t4 */
- y[336] = y[176] = t6 + t8; /* t6 */
- y[368] = y[144] = t8 + t10; /* t8 */
- y[400] = y[112] = t10 + t12; /* t10 */
- y[432] = y[80] = t12 + t14; /* t12 */
- y[464] = y[48] = t14 + t16; /* t14 */
- y[496] = y[16] = t16 + t18; /* t16 */
- x[16] = -(x[496] = t18 + t20); /* t18 */
- x[48] = -(x[464] = t20 + t22); /* t20 */
- x[80] = -(x[432] = t22 + t24); /* t22 */
- x[112] = -(x[400] = t24 + t26); /* t24 */
- x[144] = -(x[368] = t26 + t28); /* t26 */
- x[176] = -(x[336] = t28 + t30); /* t28 */
- x[208] = -(x[304] = t30 - (x[240] = -(x[272] = t32))); /* t32, t30 */
- /* Note that to be really complete, the DCT should multiply t1 by sqrt(2)/N
- and t2 to t32 by 2/N, and would take 321 additions and multiplications.
- But that's unuseful in this application. */
-}
-
-/* Compute 32 PCM (Pulse Code Modulation) samples with a convolution product */
-static /* __inline__ */ void PCM(adec_bank_t *b, s16 **pcm, int jump)
-{
- /* scale factor */
-#define F 32768
- /* These values are not in the same order as in Annex 3-B.3 of the ISO/IEC
- DIS 11172-3 */
- static const float c[512] = {
- 0.000000000 * F, -0.000442505 * F, 0.003250122 * F, -0.007003784 * F,
- 0.031082153 * F, -0.078628540 * F, 0.100311279 * F, -0.572036743 * F,
- 1.144989014 * F, 0.572036743 * F, 0.100311279 * F, 0.078628540 * F,
- 0.031082153 * F, 0.007003784 * F, 0.003250122 * F, 0.000442505 * F,
- -0.000015259 * F, -0.000473022 * F, 0.003326416 * F, -0.007919312 * F,
- 0.030517578 * F, -0.084182739 * F, 0.090927124 * F, -0.600219727 * F,
- 1.144287109 * F, 0.543823242 * F, 0.108856201 * F, 0.073059082 * F,
- 0.031478882 * F, 0.006118774 * F, 0.003173828 * F, 0.000396729 * F,
- -0.000015259 * F, -0.000534058 * F, 0.003387451 * F, -0.008865356 * F,
- 0.029785156 * F, -0.089706421 * F, 0.080688477 * F, -0.628295898 * F,
- 1.142211914 * F, 0.515609741 * F, 0.116577148 * F, 0.067520142 * F,
- 0.031738281 * F, 0.005294800 * F, 0.003082275 * F, 0.000366211 * F,
- -0.000015259 * F, -0.000579834 * F, 0.003433228 * F, -0.009841919 * F,
- 0.028884888 * F, -0.095169067 * F, 0.069595337 * F, -0.656219482 * F,
- 1.138763428 * F, 0.487472534 * F, 0.123474121 * F, 0.061996460 * F,
- 0.031845093 * F, 0.004486084 * F, 0.002990723 * F, 0.000320435 * F,
- -0.000015259 * F, -0.000625610 * F, 0.003463745 * F, -0.010848999 * F,
- 0.027801514 * F, -0.100540161 * F, 0.057617188 * F, -0.683914185 * F,
- 1.133926392 * F, 0.459472656 * F, 0.129577637 * F, 0.056533813 * F,
- 0.031814575 * F, 0.003723145 * F, 0.002899170 * F, 0.000289917 * F,
- -0.000015259 * F, -0.000686646 * F, 0.003479004 * F, -0.011886597 * F,
- 0.026535034 * F, -0.105819702 * F, 0.044784546 * F, -0.711318970 * F,
- 1.127746582 * F, 0.431655884 * F, 0.134887695 * F, 0.051132202 * F,
- 0.031661987 * F, 0.003005981 * F, 0.002792358 * F, 0.000259399 * F,
- -0.000015259 * F, -0.000747681 * F, 0.003479004 * F, -0.012939453 * F,
- 0.025085449 * F, -0.110946655 * F, 0.031082153 * F, -0.738372803 * F,
- 1.120223999 * F, 0.404083252 * F, 0.139450073 * F, 0.045837402 * F,
- 0.031387329 * F, 0.002334595 * F, 0.002685547 * F, 0.000244141 * F,
- -0.000030518 * F, -0.000808716 * F, 0.003463745 * F, -0.014022827 * F,
- 0.023422241 * F, -0.115921021 * F, 0.016510010 * F, -0.765029907 * F,
- 1.111373901 * F, 0.376800537 * F, 0.143264771 * F, 0.040634155 * F,
- 0.031005859 * F, 0.001693726 * F, 0.002578735 * F, 0.000213623 * F,
- -0.000030518 * F, -0.000885010 * F, 0.003417969 * F, -0.015121460 * F,
- 0.021575928 * F, -0.120697021 * F, 0.001068115 * F, -0.791213989 * F,
- 1.101211548 * F, 0.349868774 * F, 0.146362305 * F, 0.035552979 * F,
- 0.030532837 * F, 0.001098633 * F, 0.002456665 * F, 0.000198364 * F,
- -0.000030518 * F, -0.000961304 * F, 0.003372192 * F, -0.016235352 * F,
- 0.019531250 * F, -0.125259399 * F, -0.015228271 * F, -0.816864014 * F,
- 1.089782715 * F, 0.323318481 * F, 0.148773193 * F, 0.030609131 * F,
- 0.029937744 * F, 0.000549316 * F, 0.002349854 * F, 0.000167847 * F,
- -0.000030518 * F, -0.001037598 * F, 0.003280640 * F, -0.017349243 * F,
- 0.017257690 * F, -0.129562378 * F, -0.032379150 * F, -0.841949463 * F,
- 1.077117920 * F, 0.297210693 * F, 0.150497437 * F, 0.025817871 * F,
- 0.029281616 * F, 0.000030518 * F, 0.002243042 * F, 0.000152588 * F,
- -0.000045776 * F, -0.001113892 * F, 0.003173828 * F, -0.018463135 * F,
- 0.014801025 * F, -0.133590698 * F, -0.050354004 * F, -0.866363525 * F,
- 1.063217163 * F, 0.271591187 * F, 0.151596069 * F, 0.021179199 * F,
- 0.028533936 * F, -0.000442505 * F, 0.002120972 * F, 0.000137329 * F,
- -0.000045776 * F, -0.001205444 * F, 0.003051758 * F, -0.019577026 * F,
- 0.012115479 * F, -0.137298584 * F, -0.069168091 * F, -0.890090942 * F,
- 1.048156738 * F, 0.246505737 * F, 0.152069092 * F, 0.016708374 * F,
- 0.027725220 * F, -0.000869751 * F, 0.002014160 * F, 0.000122070 * F,
- -0.000061035 * F, -0.001296997 * F, 0.002883911 * F, -0.020690918 * F,
- 0.009231567 * F, -0.140670776 * F, -0.088775635 * F, -0.913055420 * F,
- 1.031936646 * F, 0.221984863 * F, 0.151962280 * F, 0.012420654 * F,
- 0.026840210 * F, -0.001266479 * F, 0.001907349 * F, 0.000106812 * F,
- -0.000061035 * F, -0.001388550 * F, 0.002700806 * F, -0.021789551 * F,
- 0.006134033 * F, -0.143676758 * F, -0.109161377 * F, -0.935195923 * F,
- 1.014617920 * F, 0.198059082 * F, 0.151306152 * F, 0.008316040 * F,
- 0.025909424 * F, -0.001617432 * F, 0.001785278 * F, 0.000106812 * F,
- -0.000076294 * F, -0.001480103 * F, 0.002487183 * F, -0.022857666 * F,
- 0.002822876 * F, -0.146255493 * F, -0.130310059 * F, -0.956481934 * F,
- 0.996246338 * F, 0.174789429 * F, 0.150115967 * F, 0.004394531 * F,
- 0.024932861 * F, -0.001937866 * F, 0.001693726 * F, 0.000091553 * F,
- -0.000076294 * F, -0.001586914 * F, 0.002227783 * F, -0.023910522 * F,
- -0.000686646 * F, -0.148422241 * F, -0.152206421 * F, -0.976852417 * F,
- 0.976852417 * F, 0.152206421 * F, 0.148422241 * F, 0.000686646 * F,
- 0.023910522 * F, -0.002227783 * F, 0.001586914 * F, 0.000076294 * F,
- -0.000091553 * F, -0.001693726 * F, 0.001937866 * F, -0.024932861 * F,
- -0.004394531 * F, -0.150115967 * F, -0.174789429 * F, -0.996246338 * F,
- 0.956481934 * F, 0.130310059 * F, 0.146255493 * F, -0.002822876 * F,
- 0.022857666 * F, -0.002487183 * F, 0.001480103 * F, 0.000076294 * F,
- -0.000106812 * F, -0.001785278 * F, 0.001617432 * F, -0.025909424 * F,
- -0.008316040 * F, -0.151306152 * F, -0.198059082 * F, -1.014617920 * F,
- 0.935195923 * F, 0.109161377 * F, 0.143676758 * F, -0.006134033 * F,
- 0.021789551 * F, -0.002700806 * F, 0.001388550 * F, 0.000061035 * F,
- -0.000106812 * F, -0.001907349 * F, 0.001266479 * F, -0.026840210 * F,
- -0.012420654 * F, -0.151962280 * F, -0.221984863 * F, -1.031936646 * F,
- 0.913055420 * F, 0.088775635 * F, 0.140670776 * F, -0.009231567 * F,
- 0.020690918 * F, -0.002883911 * F, 0.001296997 * F, 0.000061035 * F,
- -0.000122070 * F, -0.002014160 * F, 0.000869751 * F, -0.027725220 * F,
- -0.016708374 * F, -0.152069092 * F, -0.246505737 * F, -1.048156738 * F,
- 0.890090942 * F, 0.069168091 * F, 0.137298584 * F, -0.012115479 * F,
- 0.019577026 * F, -0.003051758 * F, 0.001205444 * F, 0.000045776 * F,
- -0.000137329 * F, -0.002120972 * F, 0.000442505 * F, -0.028533936 * F,
- -0.021179199 * F, -0.151596069 * F, -0.271591187 * F, -1.063217163 * F,
- 0.866363525 * F, 0.050354004 * F, 0.133590698 * F, -0.014801025 * F,
- 0.018463135 * F, -0.003173828 * F, 0.001113892 * F, 0.000045776 * F,
- -0.000152588 * F, -0.002243042 * F, -0.000030518 * F, -0.029281616 * F,
- -0.025817871 * F, -0.150497437 * F, -0.297210693 * F, -1.077117920 * F,
- 0.841949463 * F, 0.032379150 * F, 0.129562378 * F, -0.017257690 * F,
- 0.017349243 * F, -0.003280640 * F, 0.001037598 * F, 0.000030518 * F,
- -0.000167847 * F, -0.002349854 * F, -0.000549316 * F, -0.029937744 * F,
- -0.030609131 * F, -0.148773193 * F, -0.323318481 * F, -1.089782715 * F,
- 0.816864014 * F, 0.015228271 * F, 0.125259399 * F, -0.019531250 * F,
- 0.016235352 * F, -0.003372192 * F, 0.000961304 * F, 0.000030518 * F,
- -0.000198364 * F, -0.002456665 * F, -0.001098633 * F, -0.030532837 * F,
- -0.035552979 * F, -0.146362305 * F, -0.349868774 * F, -1.101211548 * F,
- 0.791213989 * F, -0.001068115 * F, 0.120697021 * F, -0.021575928 * F,
- 0.015121460 * F, -0.003417969 * F, 0.000885010 * F, 0.000030518 * F,
- -0.000213623 * F, -0.002578735 * F, -0.001693726 * F, -0.031005859 * F,
- -0.040634155 * F, -0.143264771 * F, -0.376800537 * F, -1.111373901 * F,
- 0.765029907 * F, -0.016510010 * F, 0.115921021 * F, -0.023422241 * F,
- 0.014022827 * F, -0.003463745 * F, 0.000808716 * F, 0.000030518 * F,
- -0.000244141 * F, -0.002685547 * F, -0.002334595 * F, -0.031387329 * F,
- -0.045837402 * F, -0.139450073 * F, -0.404083252 * F, -1.120223999 * F,
- 0.738372803 * F, -0.031082153 * F, 0.110946655 * F, -0.025085449 * F,
- 0.012939453 * F, -0.003479004 * F, 0.000747681 * F, 0.000015259 * F,
- -0.000259399 * F, -0.002792358 * F, -0.003005981 * F, -0.031661987 * F,
- -0.051132202 * F, -0.134887695 * F, -0.431655884 * F, -1.127746582 * F,
- 0.711318970 * F, -0.044784546 * F, 0.105819702 * F, -0.026535034 * F,
- 0.011886597 * F, -0.003479004 * F, 0.000686646 * F, 0.000015259 * F,
- -0.000289917 * F, -0.002899170 * F, -0.003723145 * F, -0.031814575 * F,
- -0.056533813 * F, -0.129577637 * F, -0.459472656 * F, -1.133926392 * F,
- 0.683914185 * F, -0.057617188 * F, 0.100540161 * F, -0.027801514 * F,
- 0.010848999 * F, -0.003463745 * F, 0.000625610 * F, 0.000015259 * F,
- -0.000320435 * F, -0.002990723 * F, -0.004486084 * F, -0.031845093 * F,
- -0.061996460 * F, -0.123474121 * F, -0.487472534 * F, -1.138763428 * F,
- 0.656219482 * F, -0.069595337 * F, 0.095169067 * F, -0.028884888 * F,
- 0.009841919 * F, -0.003433228 * F, 0.000579834 * F, 0.000015259 * F,
- -0.000366211 * F, -0.003082275 * F, -0.005294800 * F, -0.031738281 * F,
- -0.067520142 * F, -0.116577148 * F, -0.515609741 * F, -1.142211914 * F,
- 0.628295898 * F, -0.080688477 * F, 0.089706421 * F, -0.029785156 * F,
- 0.008865356 * F, -0.003387451 * F, 0.000534058 * F, 0.000015259 * F,
- -0.000396729 * F, -0.003173828 * F, -0.006118774 * F, -0.031478882 * F,
- -0.073059082 * F, -0.108856201 * F, -0.543823242 * F, -1.144287109 * F,
- 0.600219727 * F, -0.090927124 * F, 0.084182739 * F, -0.030517578 * F,
- 0.007919312 * F, -0.003326416 * F, 0.000473022 * F, 0.000015259 * F
- };
-#undef F
- int i;
- float tmp, *v;
- const float *f;
-
- f = c;
-
- switch(b->pos) {
- case 0:
- v = b->actual;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- /* ceiling saturation */
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- /* floor saturation */
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 1:
- v = b->actual + 1;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 2:
- v = b->actual + 2;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 3:
- v = b->actual + 3;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 4:
- v = b->actual + 4;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 5:
- v = b->actual + 5;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 6:
- v = b->actual + 6;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 7:
- v = b->actual + 7;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 8:
- v = b->actual + 8;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 9:
- v = b->actual + 9;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 10:
- v = b->actual + 10;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 11:
- v = b->actual + 11;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 12:
- v = b->actual + 12;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 13:
- v = b->actual + 13;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 14:
- v = b->actual + 14;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v;
- v += 15;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 15;
- }
- break;
- case 15:
- v = b->actual + 15;
- for(i=0; i<32; i++) {
- tmp = *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- tmp += *f++ * *v--;
- if((tmp += *f++ * *v) > 32767)
- **pcm = 0x7FFF;
- else
- if(tmp < -32768)
- **pcm = 0x8000;
- else
- **pcm = (s16)tmp;
- *pcm += jump;
- v += 31;
- }
- break;
- }
-
- /* Set the next position in the filter bank */
- b->pos++;
- b->pos &= 15;
- b->actual = (b->actual == b->v1 ? b->v2 : b->v1);
-}
--- /dev/null
+/*****************************************************************************
+ * audio_math.c: Inverse Discrete Cosine Transform and Pulse Code Modulation
+ * (c)1999 VideoLAN
+ *****************************************************************************/
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <unistd.h>
+#include <stdio.h> /* "intf_msg.h" */
+#include <stdlib.h> /* malloc(), free() */
+#include <netinet/in.h> /* ntohl() */
+#include <sys/soundcard.h> /* "audio_output.h" */
+#include <pthread.h>
+#include <sys/uio.h>
+
+#include "config.h"
+#include "common.h"
+#include "mtime.h"
+#include "debug.h"
+
+#include "intf_msg.h" /* intf_DbgMsg(), intf_ErrMsg() */
+
+#include "input.h"
+#include "input_netlist.h"
+#include "decoder_fifo.h"
+
+#include "audio_output.h"
+
+#include "audio_constants.h"
+#include "audio_decoder.h"
+#include "audio_math.h"
+
+/*****************************************************************************
+ * DCT32: Fast 32 points Discrete Cosine Transform
+ *****************************************************************************
+ * 289 additions and multiplications
+ * F(u)=alpha(u)*SUM(x=0, x<N) f(x)*cos((2x+1)u*pi/2N)
+ * where alpha(u) = sqrt(2)/N if u=0, 2/N otherwise.
+ * See fastdct.ps, and fast.tar.gz for a (Fortran :) implementation.
+ *****************************************************************************/
+
+void DCT32(float *x, adec_bank_t *b)
+{
+ /* cosine coefficients */
+ static const float c2 = .70710678118655;
+ static const float c3 = .54119610014620;
+ static const float c4 = -1.3065629648764;
+ static const float c5 = .50979557910416;
+ static const float c6 = .89997622313642;
+ static const float c7 = -2.5629154477415;
+ static const float c8 = -.60134488693505;
+ static const float c9 = .50241928618816;
+ static const float c10 = .56694403481636;
+ static const float c11 = .78815462345125;
+ static const float c12 = 1.7224470982383;
+ static const float c13 = -5.1011486186892;
+ static const float c14 = -1.0606776859903;
+ static const float c15 = -.64682178335999;
+ static const float c16 = -.52249861493969;
+ static const float c17 = .50060299823520;
+ static const float c18 = .51544730992262;
+ static const float c19 = .55310389603444;
+ static const float c20 = .62250412303566;
+ static const float c21 = .74453627100230;
+ static const float c22 = .97256823786196;
+ static const float c23 = 1.4841646163142;
+ static const float c24 = 3.4076084184687;
+ static const float c25 = -10.190008123548;
+ static const float c26 = -2.0577810099534;
+ static const float c27 = -1.1694399334329;
+ static const float c28 = -.83934964541553;
+ static const float c29 = -.67480834145501;
+ static const float c30 = -.58293496820613;
+ static const float c31 = -.53104259108978;
+ static const float c32 = -.50547095989754;
+
+ /* temporary variables */
+ float t1 , t2 , t3 , t4 , t5 , t6 , t7 , t8 ,
+ t9 , t10 , t11 , t12 , t13 , t14 , t15 , t16 ,
+ t17 , t18 , t19 , t20 , t21 , t22 , t23 , t24 ,
+ t25 , t26 , t27 , t28 , t29 , t30 , t31 , t32 ,
+ tt1 , tt2 , tt3 , tt4 , tt5 , tt6 , tt7 , tt8 ,
+ tt9 , tt10, tt11, tt12, tt13, tt14, tt15, tt16,
+ tt17, tt18, tt19, tt20, tt21, tt22, tt23, tt24,
+ tt25, tt26, tt27, tt28, tt29, tt30, tt31, tt32, *y;
+
+ /* We unrolled the loops */
+ /* Odd-even ordering is integrated before the 1st stage */
+ t17 = c17 * (x[0] - x[31]);
+ t1 = x[0] + x[31];
+ t18 = c18 * (x[2] - x[29]);
+ t2 = x[2] + x[29];
+ t19 = c19 * (x[4] - x[27]);
+ t3 = x[4] + x[27];
+ t20 = c20 * (x[6] - x[25]);
+ t4 = x[6] + x[25];
+ t21 = c21 * (x[8] - x[23]);
+ t5 = x[8] + x[23];
+ t22 = c22 * (x[10] - x[21]);
+ t6 = x[10] + x[21];
+ t23 = c23 * (x[12] - x[19]);
+ t7 = x[12] + x[19];
+ t24 = c24 * (x[14] - x[17]);
+ t8 = x[14] + x[17];
+ t25 = c25 * (x[16] - x[15]);
+ t9 = x[16] + x[15];
+ t26 = c26 * (x[18] - x[13]);
+ t10 = x[18] + x[13];
+ t27 = c27 * (x[20] - x[11]);
+ t11 = x[20] + x[11];
+ t28 = c28 * (x[22] - x[9]);
+ t12 = x[22] + x[9];
+ t29 = c29 * (x[24] - x[7]);
+ t13 = x[24] + x[7];
+ t30 = c30 * (x[26] - x[5]);
+ t14 = x[26] + x[5];
+ t31 = c31 * (x[28] - x[3]);
+ t15 = x[28] + x[3];
+ t32 = c32 * (x[30] - x[1]);
+ t16 = x[30] + x[1];
+ /* 2nd stage */
+ tt9 = c9 * (t1 - t9 );
+ tt1 = t1 + t9;
+ tt10 = c10 * (t2 - t10);
+ tt2 = t2 + t10;
+ tt11 = c11 * (t3 - t11);
+ tt3 = t3 + t11;
+ tt12 = c12 * (t4 - t12);
+ tt4 = t4 + t12;
+ tt13 = c13 * (t5 - t13);
+ tt5 = t5 + t13;
+ tt14 = c14 * (t6 - t14);
+ tt6 = t6 + t14;
+ tt15 = c15 * (t7 - t15);
+ tt7 = t7 + t15;
+ tt16 = c16 * (t8 - t16);
+ tt8 = t8 + t16;
+ tt25 = c9 * (t17 - t25);
+ tt17 = t17 + t25;
+ tt26 = c10 * (t18 - t26);
+ tt18 = t18 + t26;
+ tt27 = c11 * (t19 - t27);
+ tt19 = t19 + t27;
+ tt28 = c12 * (t20 - t28);
+ tt20 = t20 + t28;
+ tt29 = c13 * (t21 - t29);
+ tt21 = t21 + t29;
+ tt30 = c14 * (t22 - t30);
+ tt22 = t22 + t30;
+ tt31 = c15 * (t23 - t31);
+ tt23 = t23 + t31;
+ tt32 = c16 * (t24 - t32);
+ tt24 = t24 + t32;
+ /* 3rd stage */
+ t5 = c5 * (tt1 - tt5 );
+ t1 = tt1 + tt5;
+ t6 = c6 * (tt2 - tt6 );
+ t2 = tt2 + tt6;
+ t7 = c7 * (tt3 - tt7 );
+ t3 = tt3 + tt7;
+ t8 = c8 * (tt4 - tt8 );
+ t4 = tt4 + tt8;
+ t13 = c5 * (tt9 - tt13);
+ t9 = tt9 + tt13;
+ t14 = c6 * (tt10 - tt14);
+ t10 = tt10 + tt14;
+ t15 = c7 * (tt11 - tt15);
+ t11 = tt11 + tt15;
+ t16 = c8 * (tt12 - tt16);
+ t12 = tt12 + tt16;
+ t21 = c5 * (tt17 - tt21);
+ t17 = tt17 + tt21;
+ t22 = c6 * (tt18 - tt22);
+ t18 = tt18 + tt22;
+ t23 = c7 * (tt19 - tt23);
+ t19 = tt19 + tt23;
+ t24 = c8 * (tt20 - tt24);
+ t20 = tt20 + tt24;
+ t29 = c5 * (tt25 - tt29);
+ t25 = tt25 + tt29;
+ t30 = c6 * (tt26 - tt30);
+ t26 = tt26 + tt30;
+ t31 = c7 * (tt27 - tt31);
+ t27 = tt27 + tt31;
+ t32 = c8 * (tt28 - tt32);
+ t28 = tt28 + tt32;
+ /* 4th stage */
+ tt3 = c3 * (t1 - t3 );
+ tt1 = t1 + t3;
+ tt4 = c4 * (t2 - t4 );
+ tt2 = t2 + t4;
+ tt7 = c3 * (t5 - t7 );
+ tt5 = t5 + t7;
+ tt8 = c4 * (t6 - t8 );
+ tt6 = t6 + t8;
+ tt11 = c3 * (t9 - t11);
+ tt9 = t9 + t11;
+ tt12 = c4 * (t10 - t12);
+ tt10 = t10 + t12;
+ tt15 = c3 * (t13 - t15);
+ tt13 = t13 + t15;
+ tt16 = c4 * (t14 - t16);
+ tt14 = t14 + t16;
+ tt19 = c3 * (t17 - t19);
+ tt17 = t17 + t19;
+ tt20 = c4 * (t18 - t20);
+ tt18 = t18 + t20;
+ tt23 = c3 * (t21 - t23);
+ tt21 = t21 + t23;
+ tt24 = c4 * (t22 - t24);
+ tt22 = t22 + t24;
+ tt27 = c3 * (t25 - t27);
+ tt25 = t25 + t27;
+ tt28 = c4 * (t26 - t28);
+ tt26 = t26 + t28;
+ tt31 = c3 * (t29 - t31);
+ tt29 = t29 + t31;
+ tt32 = c4 * (t30 - t32);
+ tt30 = t30 + t32;
+ /* Bit-reverse ordering is integrated after the 5th stage */
+ /* Begin to split the result of the DCT (t1 to t32) in the filter bank */
+ x = b->actual + b->pos;
+ y = (b->actual == b->v1 ? b->v2 : b->v1) + b->pos;
+ x[0] = -(y[0] = c2 * (tt1 - tt2 )); /* t17 */
+ x[256] = 0; y[256] = tt1 + tt2; /* t1 */
+ t25 = c2 * (tt3 - tt4 );
+ t9 = tt3 + tt4;
+ t21 = c2 * (tt5 - tt6 );
+ t5 = tt5 + tt6;
+ t29 = c2 * (tt7 - tt8 );
+ t13 = tt7 + tt8;
+ t19 = c2 * (tt9 - tt10);
+ t3 = tt9 + tt10;
+ t27 = c2 * (tt11 - tt12);
+ t11 = tt11 + tt12;
+ t23 = c2 * (tt13 - tt14);
+ t7 = tt13 + tt14;
+ t31 = c2 * (tt15 - tt16);
+ t15 = tt15 + tt16;
+ t18 = c2 * (tt17 - tt18);
+ t2 = tt17 + tt18;
+ t26 = c2 * (tt19 - tt20);
+ t10 = tt19 + tt20;
+ t22 = c2 * (tt21 - tt22);
+ t6 = tt21 + tt22;
+ t30 = c2 * (tt23 - tt24);
+ t14 = tt23 + tt24;
+ t20 = c2 * (tt25 - tt26);
+ t4 = tt25 + tt26;
+ t28 = c2 * (tt27 - tt28);
+ t12 = tt27 + tt28;
+ t24 = c2 * (tt29 - tt30);
+ t8 = tt29 + tt30;
+ t32 = c2 * (tt31 - tt32);
+ t16 = tt31 + tt32;
+ /* Do the sums */
+ /* Keep on splitting the result */
+ y[384] = y[128] = t9 - (x[128] = -(x[384] = t25)); /* t25, t9 */
+ t10 += t26;
+ t11 += t27;
+ t12 += t28;
+ t13 += t29;
+ t14 += t30;
+ t15 += t31;
+ t16 += t32;
+ y[320] = y[192] = t5 + t13; /* t5 */
+ y[448] = y[64] = t13 + t21; /* t13 */
+ x[64] = -(x[448] = t21 - (x[192] = -(x[320] = t29))); /* t29, t21 */
+ t6 += t14;
+ t14 += t22;
+ t22 += t30;
+ t7 += t15;
+ t15 += t23;
+ t23 += t31;
+ t8 += t16;
+ t16 += t24;
+ t24 += t32;
+ y[288] = y[224] = t3 + t7; /* t3 */
+ y[352] = y[160] = t7 + t11; /* t7 */
+ y[416] = y[96] = t11 + t15; /* t11 */
+ y[480] = y[32] = t15 + t19; /* t15 */
+ x[32] = -(x[480] = t19 + t23); /* t19 */
+ x[96] = -(x[416] = t23 + t27); /* t23 */
+ x[160] = -(x[352] = t27 - (x[224] = -(x[288] = t31))); /* t31, t27 */
+ t4 += t8 ;
+ t8 += t12;
+ t12 += t16;
+ t16 += t20;
+ t20 += t24;
+ t24 += t28;
+ t28 += t32;
+ y[272] = y[240] = t2 + t4; /* t2 */
+ y[304] = y[208] = t4 + t6; /* t4 */
+ y[336] = y[176] = t6 + t8; /* t6 */
+ y[368] = y[144] = t8 + t10; /* t8 */
+ y[400] = y[112] = t10 + t12; /* t10 */
+ y[432] = y[80] = t12 + t14; /* t12 */
+ y[464] = y[48] = t14 + t16; /* t14 */
+ y[496] = y[16] = t16 + t18; /* t16 */
+ x[16] = -(x[496] = t18 + t20); /* t18 */
+ x[48] = -(x[464] = t20 + t22); /* t20 */
+ x[80] = -(x[432] = t22 + t24); /* t22 */
+ x[112] = -(x[400] = t24 + t26); /* t24 */
+ x[144] = -(x[368] = t26 + t28); /* t26 */
+ x[176] = -(x[336] = t28 + t30); /* t28 */
+ x[208] = -(x[304] = t30 - (x[240] = -(x[272] = t32))); /* t32, t30 */
+ /* Note that to be really complete, the DCT should multiply t1 by sqrt(2)/N
+ and t2 to t32 by 2/N, and would take 321 additions and multiplications.
+ But that's unuseful in this application. */
+}
+
+
+/*****************************************************************************
+ * PCM: Pulse Code Modulation
+ *****************************************************************************
+ * Compute 32 PCM samples with a convolution product
+ *****************************************************************************/
+
+void PCM(adec_bank_t *b, s16 **pcm, int jump)
+{
+ /* scale factor */
+#define F 32768
+ /* These values are not in the same order as in Annex 3-B.3 of the ISO/IEC
+ DIS 11172-3 */
+ static const float c[512] = {
+ 0.000000000 * F, -0.000442505 * F, 0.003250122 * F, -0.007003784 * F,
+ 0.031082153 * F, -0.078628540 * F, 0.100311279 * F, -0.572036743 * F,
+ 1.144989014 * F, 0.572036743 * F, 0.100311279 * F, 0.078628540 * F,
+ 0.031082153 * F, 0.007003784 * F, 0.003250122 * F, 0.000442505 * F,
+ -0.000015259 * F, -0.000473022 * F, 0.003326416 * F, -0.007919312 * F,
+ 0.030517578 * F, -0.084182739 * F, 0.090927124 * F, -0.600219727 * F,
+ 1.144287109 * F, 0.543823242 * F, 0.108856201 * F, 0.073059082 * F,
+ 0.031478882 * F, 0.006118774 * F, 0.003173828 * F, 0.000396729 * F,
+ -0.000015259 * F, -0.000534058 * F, 0.003387451 * F, -0.008865356 * F,
+ 0.029785156 * F, -0.089706421 * F, 0.080688477 * F, -0.628295898 * F,
+ 1.142211914 * F, 0.515609741 * F, 0.116577148 * F, 0.067520142 * F,
+ 0.031738281 * F, 0.005294800 * F, 0.003082275 * F, 0.000366211 * F,
+ -0.000015259 * F, -0.000579834 * F, 0.003433228 * F, -0.009841919 * F,
+ 0.028884888 * F, -0.095169067 * F, 0.069595337 * F, -0.656219482 * F,
+ 1.138763428 * F, 0.487472534 * F, 0.123474121 * F, 0.061996460 * F,
+ 0.031845093 * F, 0.004486084 * F, 0.002990723 * F, 0.000320435 * F,
+ -0.000015259 * F, -0.000625610 * F, 0.003463745 * F, -0.010848999 * F,
+ 0.027801514 * F, -0.100540161 * F, 0.057617188 * F, -0.683914185 * F,
+ 1.133926392 * F, 0.459472656 * F, 0.129577637 * F, 0.056533813 * F,
+ 0.031814575 * F, 0.003723145 * F, 0.002899170 * F, 0.000289917 * F,
+ -0.000015259 * F, -0.000686646 * F, 0.003479004 * F, -0.011886597 * F,
+ 0.026535034 * F, -0.105819702 * F, 0.044784546 * F, -0.711318970 * F,
+ 1.127746582 * F, 0.431655884 * F, 0.134887695 * F, 0.051132202 * F,
+ 0.031661987 * F, 0.003005981 * F, 0.002792358 * F, 0.000259399 * F,
+ -0.000015259 * F, -0.000747681 * F, 0.003479004 * F, -0.012939453 * F,
+ 0.025085449 * F, -0.110946655 * F, 0.031082153 * F, -0.738372803 * F,
+ 1.120223999 * F, 0.404083252 * F, 0.139450073 * F, 0.045837402 * F,
+ 0.031387329 * F, 0.002334595 * F, 0.002685547 * F, 0.000244141 * F,
+ -0.000030518 * F, -0.000808716 * F, 0.003463745 * F, -0.014022827 * F,
+ 0.023422241 * F, -0.115921021 * F, 0.016510010 * F, -0.765029907 * F,
+ 1.111373901 * F, 0.376800537 * F, 0.143264771 * F, 0.040634155 * F,
+ 0.031005859 * F, 0.001693726 * F, 0.002578735 * F, 0.000213623 * F,
+ -0.000030518 * F, -0.000885010 * F, 0.003417969 * F, -0.015121460 * F,
+ 0.021575928 * F, -0.120697021 * F, 0.001068115 * F, -0.791213989 * F,
+ 1.101211548 * F, 0.349868774 * F, 0.146362305 * F, 0.035552979 * F,
+ 0.030532837 * F, 0.001098633 * F, 0.002456665 * F, 0.000198364 * F,
+ -0.000030518 * F, -0.000961304 * F, 0.003372192 * F, -0.016235352 * F,
+ 0.019531250 * F, -0.125259399 * F, -0.015228271 * F, -0.816864014 * F,
+ 1.089782715 * F, 0.323318481 * F, 0.148773193 * F, 0.030609131 * F,
+ 0.029937744 * F, 0.000549316 * F, 0.002349854 * F, 0.000167847 * F,
+ -0.000030518 * F, -0.001037598 * F, 0.003280640 * F, -0.017349243 * F,
+ 0.017257690 * F, -0.129562378 * F, -0.032379150 * F, -0.841949463 * F,
+ 1.077117920 * F, 0.297210693 * F, 0.150497437 * F, 0.025817871 * F,
+ 0.029281616 * F, 0.000030518 * F, 0.002243042 * F, 0.000152588 * F,
+ -0.000045776 * F, -0.001113892 * F, 0.003173828 * F, -0.018463135 * F,
+ 0.014801025 * F, -0.133590698 * F, -0.050354004 * F, -0.866363525 * F,
+ 1.063217163 * F, 0.271591187 * F, 0.151596069 * F, 0.021179199 * F,
+ 0.028533936 * F, -0.000442505 * F, 0.002120972 * F, 0.000137329 * F,
+ -0.000045776 * F, -0.001205444 * F, 0.003051758 * F, -0.019577026 * F,
+ 0.012115479 * F, -0.137298584 * F, -0.069168091 * F, -0.890090942 * F,
+ 1.048156738 * F, 0.246505737 * F, 0.152069092 * F, 0.016708374 * F,
+ 0.027725220 * F, -0.000869751 * F, 0.002014160 * F, 0.000122070 * F,
+ -0.000061035 * F, -0.001296997 * F, 0.002883911 * F, -0.020690918 * F,
+ 0.009231567 * F, -0.140670776 * F, -0.088775635 * F, -0.913055420 * F,
+ 1.031936646 * F, 0.221984863 * F, 0.151962280 * F, 0.012420654 * F,
+ 0.026840210 * F, -0.001266479 * F, 0.001907349 * F, 0.000106812 * F,
+ -0.000061035 * F, -0.001388550 * F, 0.002700806 * F, -0.021789551 * F,
+ 0.006134033 * F, -0.143676758 * F, -0.109161377 * F, -0.935195923 * F,
+ 1.014617920 * F, 0.198059082 * F, 0.151306152 * F, 0.008316040 * F,
+ 0.025909424 * F, -0.001617432 * F, 0.001785278 * F, 0.000106812 * F,
+ -0.000076294 * F, -0.001480103 * F, 0.002487183 * F, -0.022857666 * F,
+ 0.002822876 * F, -0.146255493 * F, -0.130310059 * F, -0.956481934 * F,
+ 0.996246338 * F, 0.174789429 * F, 0.150115967 * F, 0.004394531 * F,
+ 0.024932861 * F, -0.001937866 * F, 0.001693726 * F, 0.000091553 * F,
+ -0.000076294 * F, -0.001586914 * F, 0.002227783 * F, -0.023910522 * F,
+ -0.000686646 * F, -0.148422241 * F, -0.152206421 * F, -0.976852417 * F,
+ 0.976852417 * F, 0.152206421 * F, 0.148422241 * F, 0.000686646 * F,
+ 0.023910522 * F, -0.002227783 * F, 0.001586914 * F, 0.000076294 * F,
+ -0.000091553 * F, -0.001693726 * F, 0.001937866 * F, -0.024932861 * F,
+ -0.004394531 * F, -0.150115967 * F, -0.174789429 * F, -0.996246338 * F,
+ 0.956481934 * F, 0.130310059 * F, 0.146255493 * F, -0.002822876 * F,
+ 0.022857666 * F, -0.002487183 * F, 0.001480103 * F, 0.000076294 * F,
+ -0.000106812 * F, -0.001785278 * F, 0.001617432 * F, -0.025909424 * F,
+ -0.008316040 * F, -0.151306152 * F, -0.198059082 * F, -1.014617920 * F,
+ 0.935195923 * F, 0.109161377 * F, 0.143676758 * F, -0.006134033 * F,
+ 0.021789551 * F, -0.002700806 * F, 0.001388550 * F, 0.000061035 * F,
+ -0.000106812 * F, -0.001907349 * F, 0.001266479 * F, -0.026840210 * F,
+ -0.012420654 * F, -0.151962280 * F, -0.221984863 * F, -1.031936646 * F,
+ 0.913055420 * F, 0.088775635 * F, 0.140670776 * F, -0.009231567 * F,
+ 0.020690918 * F, -0.002883911 * F, 0.001296997 * F, 0.000061035 * F,
+ -0.000122070 * F, -0.002014160 * F, 0.000869751 * F, -0.027725220 * F,
+ -0.016708374 * F, -0.152069092 * F, -0.246505737 * F, -1.048156738 * F,
+ 0.890090942 * F, 0.069168091 * F, 0.137298584 * F, -0.012115479 * F,
+ 0.019577026 * F, -0.003051758 * F, 0.001205444 * F, 0.000045776 * F,
+ -0.000137329 * F, -0.002120972 * F, 0.000442505 * F, -0.028533936 * F,
+ -0.021179199 * F, -0.151596069 * F, -0.271591187 * F, -1.063217163 * F,
+ 0.866363525 * F, 0.050354004 * F, 0.133590698 * F, -0.014801025 * F,
+ 0.018463135 * F, -0.003173828 * F, 0.001113892 * F, 0.000045776 * F,
+ -0.000152588 * F, -0.002243042 * F, -0.000030518 * F, -0.029281616 * F,
+ -0.025817871 * F, -0.150497437 * F, -0.297210693 * F, -1.077117920 * F,
+ 0.841949463 * F, 0.032379150 * F, 0.129562378 * F, -0.017257690 * F,
+ 0.017349243 * F, -0.003280640 * F, 0.001037598 * F, 0.000030518 * F,
+ -0.000167847 * F, -0.002349854 * F, -0.000549316 * F, -0.029937744 * F,
+ -0.030609131 * F, -0.148773193 * F, -0.323318481 * F, -1.089782715 * F,
+ 0.816864014 * F, 0.015228271 * F, 0.125259399 * F, -0.019531250 * F,
+ 0.016235352 * F, -0.003372192 * F, 0.000961304 * F, 0.000030518 * F,
+ -0.000198364 * F, -0.002456665 * F, -0.001098633 * F, -0.030532837 * F,
+ -0.035552979 * F, -0.146362305 * F, -0.349868774 * F, -1.101211548 * F,
+ 0.791213989 * F, -0.001068115 * F, 0.120697021 * F, -0.021575928 * F,
+ 0.015121460 * F, -0.003417969 * F, 0.000885010 * F, 0.000030518 * F,
+ -0.000213623 * F, -0.002578735 * F, -0.001693726 * F, -0.031005859 * F,
+ -0.040634155 * F, -0.143264771 * F, -0.376800537 * F, -1.111373901 * F,
+ 0.765029907 * F, -0.016510010 * F, 0.115921021 * F, -0.023422241 * F,
+ 0.014022827 * F, -0.003463745 * F, 0.000808716 * F, 0.000030518 * F,
+ -0.000244141 * F, -0.002685547 * F, -0.002334595 * F, -0.031387329 * F,
+ -0.045837402 * F, -0.139450073 * F, -0.404083252 * F, -1.120223999 * F,
+ 0.738372803 * F, -0.031082153 * F, 0.110946655 * F, -0.025085449 * F,
+ 0.012939453 * F, -0.003479004 * F, 0.000747681 * F, 0.000015259 * F,
+ -0.000259399 * F, -0.002792358 * F, -0.003005981 * F, -0.031661987 * F,
+ -0.051132202 * F, -0.134887695 * F, -0.431655884 * F, -1.127746582 * F,
+ 0.711318970 * F, -0.044784546 * F, 0.105819702 * F, -0.026535034 * F,
+ 0.011886597 * F, -0.003479004 * F, 0.000686646 * F, 0.000015259 * F,
+ -0.000289917 * F, -0.002899170 * F, -0.003723145 * F, -0.031814575 * F,
+ -0.056533813 * F, -0.129577637 * F, -0.459472656 * F, -1.133926392 * F,
+ 0.683914185 * F, -0.057617188 * F, 0.100540161 * F, -0.027801514 * F,
+ 0.010848999 * F, -0.003463745 * F, 0.000625610 * F, 0.000015259 * F,
+ -0.000320435 * F, -0.002990723 * F, -0.004486084 * F, -0.031845093 * F,
+ -0.061996460 * F, -0.123474121 * F, -0.487472534 * F, -1.138763428 * F,
+ 0.656219482 * F, -0.069595337 * F, 0.095169067 * F, -0.028884888 * F,
+ 0.009841919 * F, -0.003433228 * F, 0.000579834 * F, 0.000015259 * F,
+ -0.000366211 * F, -0.003082275 * F, -0.005294800 * F, -0.031738281 * F,
+ -0.067520142 * F, -0.116577148 * F, -0.515609741 * F, -1.142211914 * F,
+ 0.628295898 * F, -0.080688477 * F, 0.089706421 * F, -0.029785156 * F,
+ 0.008865356 * F, -0.003387451 * F, 0.000534058 * F, 0.000015259 * F,
+ -0.000396729 * F, -0.003173828 * F, -0.006118774 * F, -0.031478882 * F,
+ -0.073059082 * F, -0.108856201 * F, -0.543823242 * F, -1.144287109 * F,
+ 0.600219727 * F, -0.090927124 * F, 0.084182739 * F, -0.030517578 * F,
+ 0.007919312 * F, -0.003326416 * F, 0.000473022 * F, 0.000015259 * F
+ };
+#undef F
+ int i;
+ float tmp, *v;
+ const float *f;
+
+ f = c;
+
+ switch(b->pos) {
+ case 0:
+ v = b->actual;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ /* ceiling saturation */
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ /* floor saturation */
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 1:
+ v = b->actual + 1;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 2:
+ v = b->actual + 2;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 3:
+ v = b->actual + 3;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 4:
+ v = b->actual + 4;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 5:
+ v = b->actual + 5;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 6:
+ v = b->actual + 6;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 7:
+ v = b->actual + 7;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 8:
+ v = b->actual + 8;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 9:
+ v = b->actual + 9;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 10:
+ v = b->actual + 10;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 11:
+ v = b->actual + 11;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 12:
+ v = b->actual + 12;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 13:
+ v = b->actual + 13;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 14:
+ v = b->actual + 14;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v;
+ v += 15;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 15;
+ }
+ break;
+ case 15:
+ v = b->actual + 15;
+ for(i=0; i<32; i++) {
+ tmp = *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ tmp += *f++ * *v--;
+ if((tmp += *f++ * *v) > 32767)
+ **pcm = 0x7FFF;
+ else
+ if(tmp < -32768)
+ **pcm = 0x8000;
+ else
+ **pcm = (s16)tmp;
+ *pcm += jump;
+ v += 31;
+ }
+ break;
+ }
+
+ /* Set the next position in the filter bank */
+ b->pos++;
+ b->pos &= 15;
+ b->actual = (b->actual == b->v1 ? b->v2 : b->v1);
+}
projects / vlc / commitdiff