/* * imdct.c * Copyright (C) 2000-2001 Michel Lespinasse * Copyright (C) 1999-2000 Aaron Holtzman * * This file is part of a52dec, a free ATSC A-52 stream decoder. * See http://liba52.sourceforge.net/ for updates. * * a52dec is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * a52dec is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * SSE optimizations from Michael Niedermayer (michaelni@gmx.at) * 3DNOW optimizations from Nick Kurshev * michael did port them from libac3 (untested, perhaps totally broken) */ #include "config.h" #include #include #ifndef M_PI #define M_PI 3.1415926535897932384626433832795029 #endif #include #include "a52.h" #include "a52_internal.h" #include "mm_accel.h" #include "mangle.h" #ifdef RUNTIME_CPUDETECT #undef HAVE_3DNOWEX #endif #define USE_AC3_C void (* imdct_256) (sample_t data[], sample_t delay[], sample_t bias); void (* imdct_512) (sample_t data[], sample_t delay[], sample_t bias); typedef struct complex_s { sample_t real; sample_t imag; } complex_t; static void fft_128p(complex_t *a); static const int pm128[128] __attribute__((aligned(16))) = { 0, 16, 32, 48, 64, 80, 96, 112, 8, 40, 72, 104, 24, 56, 88, 120, 4, 20, 36, 52, 68, 84, 100, 116, 12, 28, 44, 60, 76, 92, 108, 124, 2, 18, 34, 50, 66, 82, 98, 114, 10, 42, 74, 106, 26, 58, 90, 122, 6, 22, 38, 54, 70, 86, 102, 118, 14, 46, 78, 110, 30, 62, 94, 126, 1, 17, 33, 49, 65, 81, 97, 113, 9, 41, 73, 105, 25, 57, 89, 121, 5, 21, 37, 53, 69, 85, 101, 117, 13, 29, 45, 61, 77, 93, 109, 125, 3, 19, 35, 51, 67, 83, 99, 115, 11, 43, 75, 107, 27, 59, 91, 123, 7, 23, 39, 55, 71, 87, 103, 119, 15, 31, 47, 63, 79, 95, 111, 127 }; /* 128 point bit-reverse LUT */ static uint8_t bit_reverse_512[] = { 0x00, 0x40, 0x20, 0x60, 0x10, 0x50, 0x30, 0x70, 0x08, 0x48, 0x28, 0x68, 0x18, 0x58, 0x38, 0x78, 0x04, 0x44, 0x24, 0x64, 0x14, 0x54, 0x34, 0x74, 0x0c, 0x4c, 0x2c, 0x6c, 0x1c, 0x5c, 0x3c, 0x7c, 0x02, 0x42, 0x22, 0x62, 0x12, 0x52, 0x32, 0x72, 0x0a, 0x4a, 0x2a, 0x6a, 0x1a, 0x5a, 0x3a, 0x7a, 0x06, 0x46, 0x26, 0x66, 0x16, 0x56, 0x36, 0x76, 0x0e, 0x4e, 0x2e, 0x6e, 0x1e, 0x5e, 0x3e, 0x7e, 0x01, 0x41, 0x21, 0x61, 0x11, 0x51, 0x31, 0x71, 0x09, 0x49, 0x29, 0x69, 0x19, 0x59, 0x39, 0x79, 0x05, 0x45, 0x25, 0x65, 0x15, 0x55, 0x35, 0x75, 0x0d, 0x4d, 0x2d, 0x6d, 0x1d, 0x5d, 0x3d, 0x7d, 0x03, 0x43, 0x23, 0x63, 0x13, 0x53, 0x33, 0x73, 0x0b, 0x4b, 0x2b, 0x6b, 0x1b, 0x5b, 0x3b, 0x7b, 0x07, 0x47, 0x27, 0x67, 0x17, 0x57, 0x37, 0x77, 0x0f, 0x4f, 0x2f, 0x6f, 0x1f, 0x5f, 0x3f, 0x7f}; static uint8_t bit_reverse_256[] = { 0x00, 0x20, 0x10, 0x30, 0x08, 0x28, 0x18, 0x38, 0x04, 0x24, 0x14, 0x34, 0x0c, 0x2c, 0x1c, 0x3c, 0x02, 0x22, 0x12, 0x32, 0x0a, 0x2a, 0x1a, 0x3a, 0x06, 0x26, 0x16, 0x36, 0x0e, 0x2e, 0x1e, 0x3e, 0x01, 0x21, 0x11, 0x31, 0x09, 0x29, 0x19, 0x39, 0x05, 0x25, 0x15, 0x35, 0x0d, 0x2d, 0x1d, 0x3d, 0x03, 0x23, 0x13, 0x33, 0x0b, 0x2b, 0x1b, 0x3b, 0x07, 0x27, 0x17, 0x37, 0x0f, 0x2f, 0x1f, 0x3f}; #ifdef ARCH_X86 // NOTE: SSE needs 16byte alignment or it will segfault // static complex_t __attribute__((aligned(16))) buf[128]; static float __attribute__((aligned(16))) sseSinCos1c[256]; static float __attribute__((aligned(16))) sseSinCos1d[256]; static float __attribute__((aligned(16))) ps111_1[4]={1,1,1,-1}; //static float __attribute__((aligned(16))) sseW0[4]; static float __attribute__((aligned(16))) sseW1[8]; static float __attribute__((aligned(16))) sseW2[16]; static float __attribute__((aligned(16))) sseW3[32]; static float __attribute__((aligned(16))) sseW4[64]; static float __attribute__((aligned(16))) sseW5[128]; static float __attribute__((aligned(16))) sseW6[256]; static float __attribute__((aligned(16))) *sseW[7]= {NULL /*sseW0*/,sseW1,sseW2,sseW3,sseW4,sseW5,sseW6}; static float __attribute__((aligned(16))) sseWindow[512]; #else static complex_t buf[128]; #endif /* Twiddle factor LUT */ static complex_t w_1[1]; static complex_t w_2[2]; static complex_t w_4[4]; static complex_t w_8[8]; static complex_t w_16[16]; static complex_t w_32[32]; static complex_t w_64[64]; static complex_t * w[7] = {w_1, w_2, w_4, w_8, w_16, w_32, w_64}; /* Twiddle factors for IMDCT */ static sample_t xcos1[128]; static sample_t xsin1[128]; static sample_t xcos2[64]; static sample_t xsin2[64]; /* Windowing function for Modified DCT - Thank you acroread */ sample_t imdct_window[] = { 0.00014, 0.00024, 0.00037, 0.00051, 0.00067, 0.00086, 0.00107, 0.00130, 0.00157, 0.00187, 0.00220, 0.00256, 0.00297, 0.00341, 0.00390, 0.00443, 0.00501, 0.00564, 0.00632, 0.00706, 0.00785, 0.00871, 0.00962, 0.01061, 0.01166, 0.01279, 0.01399, 0.01526, 0.01662, 0.01806, 0.01959, 0.02121, 0.02292, 0.02472, 0.02662, 0.02863, 0.03073, 0.03294, 0.03527, 0.03770, 0.04025, 0.04292, 0.04571, 0.04862, 0.05165, 0.05481, 0.05810, 0.06153, 0.06508, 0.06878, 0.07261, 0.07658, 0.08069, 0.08495, 0.08935, 0.09389, 0.09859, 0.10343, 0.10842, 0.11356, 0.11885, 0.12429, 0.12988, 0.13563, 0.14152, 0.14757, 0.15376, 0.16011, 0.16661, 0.17325, 0.18005, 0.18699, 0.19407, 0.20130, 0.20867, 0.21618, 0.22382, 0.23161, 0.23952, 0.24757, 0.25574, 0.26404, 0.27246, 0.28100, 0.28965, 0.29841, 0.30729, 0.31626, 0.32533, 0.33450, 0.34376, 0.35311, 0.36253, 0.37204, 0.38161, 0.39126, 0.40096, 0.41072, 0.42054, 0.43040, 0.44030, 0.45023, 0.46020, 0.47019, 0.48020, 0.49022, 0.50025, 0.51028, 0.52031, 0.53033, 0.54033, 0.55031, 0.56026, 0.57019, 0.58007, 0.58991, 0.59970, 0.60944, 0.61912, 0.62873, 0.63827, 0.64774, 0.65713, 0.66643, 0.67564, 0.68476, 0.69377, 0.70269, 0.71150, 0.72019, 0.72877, 0.73723, 0.74557, 0.75378, 0.76186, 0.76981, 0.77762, 0.78530, 0.79283, 0.80022, 0.80747, 0.81457, 0.82151, 0.82831, 0.83496, 0.84145, 0.84779, 0.85398, 0.86001, 0.86588, 0.87160, 0.87716, 0.88257, 0.88782, 0.89291, 0.89785, 0.90264, 0.90728, 0.91176, 0.91610, 0.92028, 0.92432, 0.92822, 0.93197, 0.93558, 0.93906, 0.94240, 0.94560, 0.94867, 0.95162, 0.95444, 0.95713, 0.95971, 0.96217, 0.96451, 0.96674, 0.96887, 0.97089, 0.97281, 0.97463, 0.97635, 0.97799, 0.97953, 0.98099, 0.98236, 0.98366, 0.98488, 0.98602, 0.98710, 0.98811, 0.98905, 0.98994, 0.99076, 0.99153, 0.99225, 0.99291, 0.99353, 0.99411, 0.99464, 0.99513, 0.99558, 0.99600, 0.99639, 0.99674, 0.99706, 0.99736, 0.99763, 0.99788, 0.99811, 0.99831, 0.99850, 0.99867, 0.99882, 0.99895, 0.99908, 0.99919, 0.99929, 0.99938, 0.99946, 0.99953, 0.99959, 0.99965, 0.99969, 0.99974, 0.99978, 0.99981, 0.99984, 0.99986, 0.99988, 0.99990, 0.99992, 0.99993, 0.99994, 0.99995, 0.99996, 0.99997, 0.99998, 0.99998, 0.99998, 0.99999, 0.99999, 0.99999, 0.99999, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000, 1.00000 }; static inline void swap_cmplx(complex_t *a, complex_t *b) { complex_t tmp; tmp = *a; *a = *b; *b = tmp; } static inline complex_t cmplx_mult(complex_t a, complex_t b) { complex_t ret; ret.real = a.real * b.real - a.imag * b.imag; ret.imag = a.real * b.imag + a.imag * b.real; return ret; } void imdct_do_512(sample_t data[],sample_t delay[], sample_t bias) { int i,k; int p,q; int m; int two_m; int two_m_plus_one; sample_t tmp_a_i; sample_t tmp_a_r; sample_t tmp_b_i; sample_t tmp_b_r; sample_t *data_ptr; sample_t *delay_ptr; sample_t *window_ptr; /* 512 IMDCT with source and dest data in 'data' */ /* Pre IFFT complex multiply plus IFFT cmplx conjugate & reordering*/ for( i=0; i < 128; i++) { /* z[i] = (X[256-2*i-1] + j * X[2*i]) * (xcos1[i] + j * xsin1[i]) ; */ #ifdef USE_AC3_C int j= pm128[i]; #else int j= bit_reverse_512[i]; #endif buf[i].real = (data[256-2*j-1] * xcos1[j]) - (data[2*j] * xsin1[j]); buf[i].imag = -1.0 * ((data[2*j] * xcos1[j]) + (data[256-2*j-1] * xsin1[j])); } /* FFT Merge */ /* unoptimized variant for (m=1; m < 7; m++) { if(m) two_m = (1 << m); else two_m = 1; two_m_plus_one = (1 << (m+1)); for(i = 0; i < 128; i += two_m_plus_one) { for(k = 0; k < two_m; k++) { p = k + i; q = p + two_m; tmp_a_r = buf[p].real; tmp_a_i = buf[p].imag; tmp_b_r = buf[q].real * w[m][k].real - buf[q].imag * w[m][k].imag; tmp_b_i = buf[q].imag * w[m][k].real + buf[q].real * w[m][k].imag; buf[p].real = tmp_a_r + tmp_b_r; buf[p].imag = tmp_a_i + tmp_b_i; buf[q].real = tmp_a_r - tmp_b_r; buf[q].imag = tmp_a_i - tmp_b_i; } } } */ #ifdef USE_AC3_C fft_128p (&buf[0]); #else /* 1. iteration */ for(i = 0; i < 128; i += 2) { tmp_a_r = buf[i].real; tmp_a_i = buf[i].imag; tmp_b_r = buf[i+1].real; tmp_b_i = buf[i+1].imag; buf[i].real = tmp_a_r + tmp_b_r; buf[i].imag = tmp_a_i + tmp_b_i; buf[i+1].real = tmp_a_r - tmp_b_r; buf[i+1].imag = tmp_a_i - tmp_b_i; } /* 2. iteration */ // Note w[1]={{1,0}, {0,-1}} for(i = 0; i < 128; i += 4) { tmp_a_r = buf[i].real; tmp_a_i = buf[i].imag; tmp_b_r = buf[i+2].real; tmp_b_i = buf[i+2].imag; buf[i].real = tmp_a_r + tmp_b_r; buf[i].imag = tmp_a_i + tmp_b_i; buf[i+2].real = tmp_a_r - tmp_b_r; buf[i+2].imag = tmp_a_i - tmp_b_i; tmp_a_r = buf[i+1].real; tmp_a_i = buf[i+1].imag; tmp_b_r = buf[i+3].imag; tmp_b_i = buf[i+3].real; buf[i+1].real = tmp_a_r + tmp_b_r; buf[i+1].imag = tmp_a_i - tmp_b_i; buf[i+3].real = tmp_a_r - tmp_b_r; buf[i+3].imag = tmp_a_i + tmp_b_i; } /* 3. iteration */ for(i = 0; i < 128; i += 8) { tmp_a_r = buf[i].real; tmp_a_i = buf[i].imag; tmp_b_r = buf[i+4].real; tmp_b_i = buf[i+4].imag; buf[i].real = tmp_a_r + tmp_b_r; buf[i].imag = tmp_a_i + tmp_b_i; buf[i+4].real = tmp_a_r - tmp_b_r; buf[i+4].imag = tmp_a_i - tmp_b_i; tmp_a_r = buf[1+i].real; tmp_a_i = buf[1+i].imag; tmp_b_r = (buf[i+5].real + buf[i+5].imag) * w[2][1].real; tmp_b_i = (buf[i+5].imag - buf[i+5].real) * w[2][1].real; buf[1+i].real = tmp_a_r + tmp_b_r; buf[1+i].imag = tmp_a_i + tmp_b_i; buf[i+5].real = tmp_a_r - tmp_b_r; buf[i+5].imag = tmp_a_i - tmp_b_i; tmp_a_r = buf[i+2].real; tmp_a_i = buf[i+2].imag; tmp_b_r = buf[i+6].imag; tmp_b_i = - buf[i+6].real; buf[i+2].real = tmp_a_r + tmp_b_r; buf[i+2].imag = tmp_a_i + tmp_b_i; buf[i+6].real = tmp_a_r - tmp_b_r; buf[i+6].imag = tmp_a_i - tmp_b_i; tmp_a_r = buf[i+3].real; tmp_a_i = buf[i+3].imag; tmp_b_r = (buf[i+7].real - buf[i+7].imag) * w[2][3].imag; tmp_b_i = (buf[i+7].imag + buf[i+7].real) * w[2][3].imag; buf[i+3].real = tmp_a_r + tmp_b_r; buf[i+3].imag = tmp_a_i + tmp_b_i; buf[i+7].real = tmp_a_r - tmp_b_r; buf[i+7].imag = tmp_a_i - tmp_b_i; } /* 4-7. iterations */ for (m=3; m < 7; m++) { two_m = (1 << m); two_m_plus_one = two_m<<1; for(i = 0; i < 128; i += two_m_plus_one) { for(k = 0; k < two_m; k++) { int p = k + i; int q = p + two_m; tmp_a_r = buf[p].real; tmp_a_i = buf[p].imag; tmp_b_r = buf[q].real * w[m][k].real - buf[q].imag * w[m][k].imag; tmp_b_i = buf[q].imag * w[m][k].real + buf[q].real * w[m][k].imag; buf[p].real = tmp_a_r + tmp_b_r; buf[p].imag = tmp_a_i + tmp_b_i; buf[q].real = tmp_a_r - tmp_b_r; buf[q].imag = tmp_a_i - tmp_b_i; } } } #endif /* Post IFFT complex multiply plus IFFT complex conjugate*/ for( i=0; i < 128; i++) { /* y[n] = z[n] * (xcos1[n] + j * xsin1[n]) ; */ tmp_a_r = buf[i].real; tmp_a_i = -1.0 * buf[i].imag; buf[i].real =(tmp_a_r * xcos1[i]) - (tmp_a_i * xsin1[i]); buf[i].imag =(tmp_a_r * xsin1[i]) + (tmp_a_i * xcos1[i]); } data_ptr = data; delay_ptr = delay; window_ptr = imdct_window; /* Window and convert to real valued signal */ for(i=0; i< 64; i++) { *data_ptr++ = -buf[64+i].imag * *window_ptr++ + *delay_ptr++ + bias; *data_ptr++ = buf[64-i-1].real * *window_ptr++ + *delay_ptr++ + bias; } for(i=0; i< 64; i++) { *data_ptr++ = -buf[i].real * *window_ptr++ + *delay_ptr++ + bias; *data_ptr++ = buf[128-i-1].imag * *window_ptr++ + *delay_ptr++ + bias; } /* The trailing edge of the window goes into the delay line */ delay_ptr = delay; for(i=0; i< 64; i++) { *delay_ptr++ = -buf[64+i].real * *--window_ptr; *delay_ptr++ = buf[64-i-1].imag * *--window_ptr; } for(i=0; i<64; i++) { *delay_ptr++ = buf[i].imag * *--window_ptr; *delay_ptr++ = -buf[128-i-1].real * *--window_ptr; } } // Stuff below this line is borrowed from libac3 #include "srfftp.h" #ifdef ARCH_X86 #ifndef HAVE_3DNOW #define HAVE_3DNOW 1 #endif #include "srfftp_3dnow.h" const i_cmplx_t x_plus_minus_3dnow __attribute__ ((aligned (8))) = { 0x00000000UL, 0x80000000UL }; const i_cmplx_t x_minus_plus_3dnow __attribute__ ((aligned (8))) = { 0x80000000UL, 0x00000000UL }; const complex_t HSQRT2_3DNOW __attribute__ ((aligned (8))) = { 0.707106781188, 0.707106781188 }; #undef HAVE_3DNOWEX #include "imdct_3dnow.h" #define HAVE_3DNOWEX #include "imdct_3dnow.h" void imdct_do_512_sse(sample_t data[],sample_t delay[], sample_t bias) { int i,k; int p,q; int m; int two_m; int two_m_plus_one; sample_t tmp_a_i; sample_t tmp_a_r; sample_t tmp_b_i; sample_t tmp_b_r; sample_t *data_ptr; sample_t *delay_ptr; sample_t *window_ptr; /* 512 IMDCT with source and dest data in 'data' */ /* see the c version (dct_do_512()), its allmost identical, just in C */ /* Pre IFFT complex multiply plus IFFT cmplx conjugate */ /* Bit reversed shuffling */ asm volatile( "xorl %%esi, %%esi \n\t" "leal "MANGLE(bit_reverse_512)", %%eax \n\t" "movl $1008, %%edi \n\t" "pushl %%ebp \n\t" //use ebp without telling gcc ".balign 16 \n\t" "1: \n\t" "movlps (%0, %%esi), %%xmm0 \n\t" // XXXI "movhps 8(%0, %%edi), %%xmm0 \n\t" // RXXI "movlps 8(%0, %%esi), %%xmm1 \n\t" // XXXi "movhps (%0, %%edi), %%xmm1 \n\t" // rXXi "shufps $0x33, %%xmm1, %%xmm0 \n\t" // irIR "movaps "MANGLE(sseSinCos1c)"(%%esi), %%xmm2\n\t" "mulps %%xmm0, %%xmm2 \n\t" "shufps $0xB1, %%xmm0, %%xmm0 \n\t" // riRI "mulps "MANGLE(sseSinCos1d)"(%%esi), %%xmm0\n\t" "subps %%xmm0, %%xmm2 \n\t" "movzbl (%%eax), %%edx \n\t" "movzbl 1(%%eax), %%ebp \n\t" "movlps %%xmm2, (%1, %%edx,8) \n\t" "movhps %%xmm2, (%1, %%ebp,8) \n\t" "addl $16, %%esi \n\t" "addl $2, %%eax \n\t" // avoid complex addressing for P4 crap "subl $16, %%edi \n\t" " jnc 1b \n\t" "popl %%ebp \n\t"//no we didnt touch ebp *g* :: "b" (data), "c" (buf) : "%esi", "%edi", "%eax", "%edx" ); /* FFT Merge */ /* unoptimized variant for (m=1; m < 7; m++) { if(m) two_m = (1 << m); else two_m = 1; two_m_plus_one = (1 << (m+1)); for(i = 0; i < 128; i += two_m_plus_one) { for(k = 0; k < two_m; k++) { p = k + i; q = p + two_m; tmp_a_r = buf[p].real; tmp_a_i = buf[p].imag; tmp_b_r = buf[q].real * w[m][k].real - buf[q].imag * w[m][k].imag; tmp_b_i = buf[q].imag * w[m][k].real + buf[q].real * w[m][k].imag; buf[p].real = tmp_a_r + tmp_b_r; buf[p].imag = tmp_a_i + tmp_b_i; buf[q].real = tmp_a_r - tmp_b_r; buf[q].imag = tmp_a_i - tmp_b_i; } } } */ /* 1. iteration */ // Note w[0][0]={1,0} asm volatile( "xorps %%xmm1, %%xmm1 \n\t" "xorps %%xmm2, %%xmm2 \n\t" "movl %0, %%esi \n\t" ".balign 16 \n\t" "1: \n\t" "movlps (%%esi), %%xmm0 \n\t" //buf[p] "movlps 8(%%esi), %%xmm1\n\t" //buf[q] "movhps (%%esi), %%xmm0 \n\t" //buf[p] "movhps 8(%%esi), %%xmm2\n\t" //buf[q] "addps %%xmm1, %%xmm0 \n\t" "subps %%xmm2, %%xmm0 \n\t" "movaps %%xmm0, (%%esi) \n\t" "addl $16, %%esi \n\t" "cmpl %1, %%esi \n\t" " jb 1b \n\t" :: "g" (buf), "r" (buf + 128) : "%esi" ); /* 2. iteration */ // Note w[1]={{1,0}, {0,-1}} asm volatile( "movaps "MANGLE(ps111_1)", %%xmm7\n\t" // 1,1,1,-1 "movl %0, %%esi \n\t" ".balign 16 \n\t" "1: \n\t" "movaps 16(%%esi), %%xmm2 \n\t" //r2,i2,r3,i3 "shufps $0xB4, %%xmm2, %%xmm2 \n\t" //r2,i2,i3,r3 "mulps %%xmm7, %%xmm2 \n\t" //r2,i2,i3,-r3 "movaps (%%esi), %%xmm0 \n\t" //r0,i0,r1,i1 "movaps (%%esi), %%xmm1 \n\t" //r0,i0,r1,i1 "addps %%xmm2, %%xmm0 \n\t" "subps %%xmm2, %%xmm1 \n\t" "movaps %%xmm0, (%%esi) \n\t" "movaps %%xmm1, 16(%%esi) \n\t" "addl $32, %%esi \n\t" "cmpl %1, %%esi \n\t" " jb 1b \n\t" :: "g" (buf), "r" (buf + 128) : "%esi" ); /* 3. iteration */ /* Note sseW2+0={1,1,sqrt(2),sqrt(2)) Note sseW2+16={0,0,sqrt(2),-sqrt(2)) Note sseW2+32={0,0,-sqrt(2),-sqrt(2)) Note sseW2+48={1,-1,sqrt(2),-sqrt(2)) */ asm volatile( "movaps 48+"MANGLE(sseW2)", %%xmm6\n\t" "movaps 16+"MANGLE(sseW2)", %%xmm7\n\t" "xorps %%xmm5, %%xmm5 \n\t" "xorps %%xmm2, %%xmm2 \n\t" "movl %0, %%esi \n\t" ".balign 16 \n\t" "1: \n\t" "movaps 32(%%esi), %%xmm2 \n\t" //r4,i4,r5,i5 "movaps 48(%%esi), %%xmm3 \n\t" //r6,i6,r7,i7 "movaps "MANGLE(sseW2)", %%xmm4 \n\t" //r4,i4,r5,i5 "movaps 32+"MANGLE(sseW2)", %%xmm5\n\t" //r6,i6,r7,i7 "mulps %%xmm2, %%xmm4 \n\t" "mulps %%xmm3, %%xmm5 \n\t" "shufps $0xB1, %%xmm2, %%xmm2 \n\t" //i4,r4,i5,r5 "shufps $0xB1, %%xmm3, %%xmm3 \n\t" //i6,r6,i7,r7 "mulps %%xmm6, %%xmm3 \n\t" "mulps %%xmm7, %%xmm2 \n\t" "movaps (%%esi), %%xmm0 \n\t" //r0,i0,r1,i1 "movaps 16(%%esi), %%xmm1 \n\t" //r2,i2,r3,i3 "addps %%xmm4, %%xmm2 \n\t" "addps %%xmm5, %%xmm3 \n\t" "movaps %%xmm2, %%xmm4 \n\t" "movaps %%xmm3, %%xmm5 \n\t" "addps %%xmm0, %%xmm2 \n\t" "addps %%xmm1, %%xmm3 \n\t" "subps %%xmm4, %%xmm0 \n\t" "subps %%xmm5, %%xmm1 \n\t" "movaps %%xmm2, (%%esi) \n\t" "movaps %%xmm3, 16(%%esi) \n\t" "movaps %%xmm0, 32(%%esi) \n\t" "movaps %%xmm1, 48(%%esi) \n\t" "addl $64, %%esi \n\t" "cmpl %1, %%esi \n\t" " jb 1b \n\t" :: "g" (buf), "r" (buf + 128) : "%esi" ); /* 4-7. iterations */ for (m=3; m < 7; m++) { two_m = (1 << m); two_m_plus_one = two_m<<1; asm volatile( "movl %0, %%esi \n\t" ".balign 16 \n\t" "1: \n\t" "xorl %%edi, %%edi \n\t" // k "leal (%%esi, %3), %%edx \n\t" "2: \n\t" "movaps (%%edx, %%edi), %%xmm1 \n\t" "movaps (%4, %%edi, 2), %%xmm2 \n\t" "mulps %%xmm1, %%xmm2 \n\t" "shufps $0xB1, %%xmm1, %%xmm1 \n\t" "mulps 16(%4, %%edi, 2), %%xmm1 \n\t" "movaps (%%esi, %%edi), %%xmm0 \n\t" "addps %%xmm2, %%xmm1 \n\t" "movaps %%xmm1, %%xmm2 \n\t" "addps %%xmm0, %%xmm1 \n\t" "subps %%xmm2, %%xmm0 \n\t" "movaps %%xmm1, (%%esi, %%edi) \n\t" "movaps %%xmm0, (%%edx, %%edi) \n\t" "addl $16, %%edi \n\t" "cmpl %3, %%edi \n\t" //FIXME (opt) count against 0 " jb 2b \n\t" "addl %2, %%esi \n\t" "cmpl %1, %%esi \n\t" " jb 1b \n\t" :: "g" (buf), "m" (buf+128), "m" (two_m_plus_one<<3), "r" (two_m<<3), "r" (sseW[m]) : "%esi", "%edi", "%edx" ); } /* Post IFFT complex multiply plus IFFT complex conjugate*/ asm volatile( "movl $-1024, %%esi \n\t" ".balign 16 \n\t" "1: \n\t" "movaps (%0, %%esi), %%xmm0 \n\t" "movaps (%0, %%esi), %%xmm1 \n\t" "shufps $0xB1, %%xmm0, %%xmm0 \n\t" "mulps 1024+"MANGLE(sseSinCos1c)"(%%esi), %%xmm1\n\t" "mulps 1024+"MANGLE(sseSinCos1d)"(%%esi), %%xmm0\n\t" "addps %%xmm1, %%xmm0 \n\t" "movaps %%xmm0, (%0, %%esi) \n\t" "addl $16, %%esi \n\t" " jnz 1b \n\t" :: "r" (buf+128) : "%esi" ); data_ptr = data; delay_ptr = delay; window_ptr = imdct_window; /* Window and convert to real valued signal */ asm volatile( "xorl %%edi, %%edi \n\t" // 0 "xorl %%esi, %%esi \n\t" // 0 "movss %3, %%xmm2 \n\t" // bias "shufps $0x00, %%xmm2, %%xmm2 \n\t" // bias, bias, ... ".balign 16 \n\t" "1: \n\t" "movlps (%0, %%esi), %%xmm0 \n\t" // ? ? A ? "movlps 8(%0, %%esi), %%xmm1 \n\t" // ? ? C ? "movhps -16(%0, %%edi), %%xmm1 \n\t" // ? D C ? "movhps -8(%0, %%edi), %%xmm0 \n\t" // ? B A ? "shufps $0x99, %%xmm1, %%xmm0 \n\t" // D C B A "mulps "MANGLE(sseWindow)"(%%esi), %%xmm0\n\t" "addps (%2, %%esi), %%xmm0 \n\t" "addps %%xmm2, %%xmm0 \n\t" "movaps %%xmm0, (%1, %%esi) \n\t" "addl $16, %%esi \n\t" "subl $16, %%edi \n\t" "cmpl $512, %%esi \n\t" " jb 1b \n\t" :: "r" (buf+64), "r" (data_ptr), "r" (delay_ptr), "m" (bias) : "%esi", "%edi" ); data_ptr+=128; delay_ptr+=128; // window_ptr+=128; asm volatile( "movl $1024, %%edi \n\t" // 512 "xorl %%esi, %%esi \n\t" // 0 "movss %3, %%xmm2 \n\t" // bias "shufps $0x00, %%xmm2, %%xmm2 \n\t" // bias, bias, ... ".balign 16 \n\t" "1: \n\t" "movlps (%0, %%esi), %%xmm0 \n\t" // ? ? ? A "movlps 8(%0, %%esi), %%xmm1 \n\t" // ? ? ? C "movhps -16(%0, %%edi), %%xmm1 \n\t" // D ? ? C "movhps -8(%0, %%edi), %%xmm0 \n\t" // B ? ? A "shufps $0xCC, %%xmm1, %%xmm0 \n\t" // D C B A "mulps 512+"MANGLE(sseWindow)"(%%esi), %%xmm0\n\t" "addps (%2, %%esi), %%xmm0 \n\t" "addps %%xmm2, %%xmm0 \n\t" "movaps %%xmm0, (%1, %%esi) \n\t" "addl $16, %%esi \n\t" "subl $16, %%edi \n\t" "cmpl $512, %%esi \n\t" " jb 1b \n\t" :: "r" (buf), "r" (data_ptr), "r" (delay_ptr), "m" (bias) : "%esi", "%edi" ); data_ptr+=128; // window_ptr+=128; /* The trailing edge of the window goes into the delay line */ delay_ptr = delay; asm volatile( "xorl %%edi, %%edi \n\t" // 0 "xorl %%esi, %%esi \n\t" // 0 ".balign 16 \n\t" "1: \n\t" "movlps (%0, %%esi), %%xmm0 \n\t" // ? ? ? A "movlps 8(%0, %%esi), %%xmm1 \n\t" // ? ? ? C "movhps -16(%0, %%edi), %%xmm1 \n\t" // D ? ? C "movhps -8(%0, %%edi), %%xmm0 \n\t" // B ? ? A "shufps $0xCC, %%xmm1, %%xmm0 \n\t" // D C B A "mulps 1024+"MANGLE(sseWindow)"(%%esi), %%xmm0\n\t" "movaps %%xmm0, (%1, %%esi) \n\t" "addl $16, %%esi \n\t" "subl $16, %%edi \n\t" "cmpl $512, %%esi \n\t" " jb 1b \n\t" :: "r" (buf+64), "r" (delay_ptr) : "%esi", "%edi" ); delay_ptr+=128; // window_ptr-=128; asm volatile( "movl $1024, %%edi \n\t" // 1024 "xorl %%esi, %%esi \n\t" // 0 ".balign 16 \n\t" "1: \n\t" "movlps (%0, %%esi), %%xmm0 \n\t" // ? ? A ? "movlps 8(%0, %%esi), %%xmm1 \n\t" // ? ? C ? "movhps -16(%0, %%edi), %%xmm1 \n\t" // ? D C ? "movhps -8(%0, %%edi), %%xmm0 \n\t" // ? B A ? "shufps $0x99, %%xmm1, %%xmm0 \n\t" // D C B A "mulps 1536+"MANGLE(sseWindow)"(%%esi), %%xmm0\n\t" "movaps %%xmm0, (%1, %%esi) \n\t" "addl $16, %%esi \n\t" "subl $16, %%edi \n\t" "cmpl $512, %%esi \n\t" " jb 1b \n\t" :: "r" (buf), "r" (delay_ptr) : "%esi", "%edi" ); } #endif //arch_x86 void imdct_do_256(sample_t data[],sample_t delay[],sample_t bias) { int i,k; int p,q; int m; int two_m; int two_m_plus_one; sample_t tmp_a_i; sample_t tmp_a_r; sample_t tmp_b_i; sample_t tmp_b_r; sample_t *data_ptr; sample_t *delay_ptr; sample_t *window_ptr; complex_t *buf_1, *buf_2; buf_1 = &buf[0]; buf_2 = &buf[64]; /* Pre IFFT complex multiply plus IFFT cmplx conjugate */ for(k=0; k<64; k++) { /* X1[k] = X[2*k] */ /* X2[k] = X[2*k+1] */ p = 2 * (128-2*k-1); q = 2 * (2 * k); /* Z1[k] = (X1[128-2*k-1] + j * X1[2*k]) * (xcos2[k] + j * xsin2[k]); */ buf_1[k].real = data[p] * xcos2[k] - data[q] * xsin2[k]; buf_1[k].imag = -1.0f * (data[q] * xcos2[k] + data[p] * xsin2[k]); /* Z2[k] = (X2[128-2*k-1] + j * X2[2*k]) * (xcos2[k] + j * xsin2[k]); */ buf_2[k].real = data[p + 1] * xcos2[k] - data[q + 1] * xsin2[k]; buf_2[k].imag = -1.0f * ( data[q + 1] * xcos2[k] + data[p + 1] * xsin2[k]); } /* IFFT Bit reversed shuffling */ for(i=0; i<64; i++) { k = bit_reverse_256[i]; if (k < i) { swap_cmplx(&buf_1[i],&buf_1[k]); swap_cmplx(&buf_2[i],&buf_2[k]); } } /* FFT Merge */ for (m=0; m < 6; m++) { two_m = (1 << m); two_m_plus_one = (1 << (m+1)); /* FIXME */ if(m) two_m = (1 << m); else two_m = 1; for(k = 0; k < two_m; k++) { for(i = 0; i < 64; i += two_m_plus_one) { p = k + i; q = p + two_m; /* Do block 1 */ tmp_a_r = buf_1[p].real; tmp_a_i = buf_1[p].imag; tmp_b_r = buf_1[q].real * w[m][k].real - buf_1[q].imag * w[m][k].imag; tmp_b_i = buf_1[q].imag * w[m][k].real + buf_1[q].real * w[m][k].imag; buf_1[p].real = tmp_a_r + tmp_b_r; buf_1[p].imag = tmp_a_i + tmp_b_i; buf_1[q].real = tmp_a_r - tmp_b_r; buf_1[q].imag = tmp_a_i - tmp_b_i; /* Do block 2 */ tmp_a_r = buf_2[p].real; tmp_a_i = buf_2[p].imag; tmp_b_r = buf_2[q].real * w[m][k].real - buf_2[q].imag * w[m][k].imag; tmp_b_i = buf_2[q].imag * w[m][k].real + buf_2[q].real * w[m][k].imag; buf_2[p].real = tmp_a_r + tmp_b_r; buf_2[p].imag = tmp_a_i + tmp_b_i; buf_2[q].real = tmp_a_r - tmp_b_r; buf_2[q].imag = tmp_a_i - tmp_b_i; } } } /* Post IFFT complex multiply */ for( i=0; i < 64; i++) { /* y1[n] = z1[n] * (xcos2[n] + j * xs in2[n]) ; */ tmp_a_r = buf_1[i].real; tmp_a_i = -buf_1[i].imag; buf_1[i].real =(tmp_a_r * xcos2[i]) - (tmp_a_i * xsin2[i]); buf_1[i].imag =(tmp_a_r * xsin2[i]) + (tmp_a_i * xcos2[i]); /* y2[n] = z2[n] * (xcos2[n] + j * xsin2[n]) ; */ tmp_a_r = buf_2[i].real; tmp_a_i = -buf_2[i].imag; buf_2[i].real =(tmp_a_r * xcos2[i]) - (tmp_a_i * xsin2[i]); buf_2[i].imag =(tmp_a_r * xsin2[i]) + (tmp_a_i * xcos2[i]); } data_ptr = data; delay_ptr = delay; window_ptr = imdct_window; /* Window and convert to real valued signal */ for(i=0; i< 64; i++) { *data_ptr++ = -buf_1[i].imag * *window_ptr++ + *delay_ptr++ + bias; *data_ptr++ = buf_1[64-i-1].real * *window_ptr++ + *delay_ptr++ + bias; } for(i=0; i< 64; i++) { *data_ptr++ = -buf_1[i].real * *window_ptr++ + *delay_ptr++ + bias; *data_ptr++ = buf_1[64-i-1].imag * *window_ptr++ + *delay_ptr++ + bias; } delay_ptr = delay; for(i=0; i< 64; i++) { *delay_ptr++ = -buf_2[i].real * *--window_ptr; *delay_ptr++ = buf_2[64-i-1].imag * *--window_ptr; } for(i=0; i< 64; i++) { *delay_ptr++ = buf_2[i].imag * *--window_ptr; *delay_ptr++ = -buf_2[64-i-1].real * *--window_ptr; } } void imdct_init (uint32_t mm_accel) { #ifdef LIBA52_MLIB if (mm_accel & MM_ACCEL_MLIB) { fprintf (stderr, "Using mlib for IMDCT transform\n"); imdct_512 = imdct_do_512_mlib; imdct_256 = imdct_do_256_mlib; } else #endif { int i, j, k; /* Twiddle factors to turn IFFT into IMDCT */ for (i = 0; i < 128; i++) { xcos1[i] = -cos ((M_PI / 2048) * (8 * i + 1)); xsin1[i] = -sin ((M_PI / 2048) * (8 * i + 1)); } #ifdef ARCH_X86 for (i = 0; i < 128; i++) { sseSinCos1c[2*i+0]= xcos1[i]; sseSinCos1c[2*i+1]= -xcos1[i]; sseSinCos1d[2*i+0]= xsin1[i]; sseSinCos1d[2*i+1]= xsin1[i]; } #endif /* More twiddle factors to turn IFFT into IMDCT */ for (i = 0; i < 64; i++) { xcos2[i] = -cos ((M_PI / 1024) * (8 * i + 1)); xsin2[i] = -sin ((M_PI / 1024) * (8 * i + 1)); } for (i = 0; i < 7; i++) { j = 1 << i; for (k = 0; k < j; k++) { w[i][k].real = cos (-M_PI * k / j); w[i][k].imag = sin (-M_PI * k / j); } } #ifdef ARCH_X86 for (i = 1; i < 7; i++) { j = 1 << i; for (k = 0; k < j; k+=2) { sseW[i][4*k + 0] = w[i][k+0].real; sseW[i][4*k + 1] = w[i][k+0].real; sseW[i][4*k + 2] = w[i][k+1].real; sseW[i][4*k + 3] = w[i][k+1].real; sseW[i][4*k + 4] = -w[i][k+0].imag; sseW[i][4*k + 5] = w[i][k+0].imag; sseW[i][4*k + 6] = -w[i][k+1].imag; sseW[i][4*k + 7] = w[i][k+1].imag; //we multiply more or less uninitalized numbers so we need to use exactly 0.0 if(k==0) { // sseW[i][4*k + 0]= sseW[i][4*k + 1]= 1.0; sseW[i][4*k + 4]= sseW[i][4*k + 5]= 0.0; } if(2*k == j) { sseW[i][4*k + 0]= sseW[i][4*k + 1]= 0.0; // sseW[i][4*k + 4]= -(sseW[i][4*k + 5]= -1.0); } } } for(i=0; i<128; i++) { sseWindow[2*i+0]= -imdct_window[2*i+0]; sseWindow[2*i+1]= imdct_window[2*i+1]; } for(i=0; i<64; i++) { sseWindow[256 + 2*i+0]= -imdct_window[254 - 2*i+1]; sseWindow[256 + 2*i+1]= imdct_window[254 - 2*i+0]; sseWindow[384 + 2*i+0]= imdct_window[126 - 2*i+1]; sseWindow[384 + 2*i+1]= -imdct_window[126 - 2*i+0]; } #endif // arch_x86 imdct_512 = imdct_do_512; #ifdef ARCH_X86 if(mm_accel & MM_ACCEL_X86_SSE) { fprintf (stderr, "Using SSE optimized IMDCT transform\n"); imdct_512 = imdct_do_512_sse; } else if(mm_accel & MM_ACCEL_X86_3DNOWEXT) { fprintf (stderr, "Using 3DNowEx optimized IMDCT transform\n"); imdct_512 = imdct_do_512_3dnowex; } else if(mm_accel & MM_ACCEL_X86_3DNOW) { fprintf (stderr, "Using 3DNow optimized IMDCT transform\n"); imdct_512 = imdct_do_512_3dnow; } else #endif // arch_x86 fprintf (stderr, "No accelerated IMDCT transform found\n"); imdct_256 = imdct_do_256; } } static void fft_asmb(int k, complex_t *x, complex_t *wTB, const complex_t *d, const complex_t *d_3) { register complex_t *x2k, *x3k, *x4k, *wB; register float a_r, a_i, a1_r, a1_i, u_r, u_i, v_r, v_i; x2k = x + 2 * k; x3k = x2k + 2 * k; x4k = x3k + 2 * k; wB = wTB + 2 * k; TRANSZERO(x[0],x2k[0],x3k[0],x4k[0]); TRANS(x[1],x2k[1],x3k[1],x4k[1],wTB[1],wB[1],d[1],d_3[1]); --k; for(;;) { TRANS(x[2],x2k[2],x3k[2],x4k[2],wTB[2],wB[2],d[2],d_3[2]); TRANS(x[3],x2k[3],x3k[3],x4k[3],wTB[3],wB[3],d[3],d_3[3]); if (!--k) break; x += 2; x2k += 2; x3k += 2; x4k += 2; d += 2; d_3 += 2; wTB += 2; wB += 2; } } static void fft_asmb16(complex_t *x, complex_t *wTB) { register float a_r, a_i, a1_r, a1_i, u_r, u_i, v_r, v_i; int k = 2; /* transform x[0], x[8], x[4], x[12] */ TRANSZERO(x[0],x[4],x[8],x[12]); /* transform x[1], x[9], x[5], x[13] */ TRANS(x[1],x[5],x[9],x[13],wTB[1],wTB[5],delta16[1],delta16_3[1]); /* transform x[2], x[10], x[6], x[14] */ TRANSHALF_16(x[2],x[6],x[10],x[14]); /* transform x[3], x[11], x[7], x[15] */ TRANS(x[3],x[7],x[11],x[15],wTB[3],wTB[7],delta16[3],delta16_3[3]); } static void fft_4(complex_t *x) { /* delta_p = 1 here */ /* x[k] = sum_{i=0..3} x[i] * w^{i*k}, w=e^{-2*pi/4} */ register float yt_r, yt_i, yb_r, yb_i, u_r, u_i, vi_r, vi_i; yt_r = x[0].real; yb_r = yt_r - x[2].real; yt_r += x[2].real; u_r = x[1].real; vi_i = x[3].real - u_r; u_r += x[3].real; u_i = x[1].imag; vi_r = u_i - x[3].imag; u_i += x[3].imag; yt_i = yt_r; yt_i += u_r; x[0].real = yt_i; yt_r -= u_r; x[2].real = yt_r; yt_i = yb_r; yt_i += vi_r; x[1].real = yt_i; yb_r -= vi_r; x[3].real = yb_r; yt_i = x[0].imag; yb_i = yt_i - x[2].imag; yt_i += x[2].imag; yt_r = yt_i; yt_r += u_i; x[0].imag = yt_r; yt_i -= u_i; x[2].imag = yt_i; yt_r = yb_i; yt_r += vi_i; x[1].imag = yt_r; yb_i -= vi_i; x[3].imag = yb_i; } static void fft_8(complex_t *x) { /* delta_p = diag{1, sqrt(i)} here */ /* x[k] = sum_{i=0..7} x[i] * w^{i*k}, w=e^{-2*pi/8} */ register float wT1_r, wT1_i, wB1_r, wB1_i, wT2_r, wT2_i, wB2_r, wB2_i; wT1_r = x[1].real; wT1_i = x[1].imag; wB1_r = x[3].real; wB1_i = x[3].imag; x[1] = x[2]; x[2] = x[4]; x[3] = x[6]; fft_4(&x[0]); /* x[0] x[4] */ wT2_r = x[5].real; wT2_r += x[7].real; wT2_r += wT1_r; wT2_r += wB1_r; wT2_i = wT2_r; wT2_r += x[0].real; wT2_i = x[0].real - wT2_i; x[0].real = wT2_r; x[4].real = wT2_i; wT2_i = x[5].imag; wT2_i += x[7].imag; wT2_i += wT1_i; wT2_i += wB1_i; wT2_r = wT2_i; wT2_r += x[0].imag; wT2_i = x[0].imag - wT2_i; x[0].imag = wT2_r; x[4].imag = wT2_i; /* x[2] x[6] */ wT2_r = x[5].imag; wT2_r -= x[7].imag; wT2_r += wT1_i; wT2_r -= wB1_i; wT2_i = wT2_r; wT2_r += x[2].real; wT2_i = x[2].real - wT2_i; x[2].real = wT2_r; x[6].real = wT2_i; wT2_i = x[5].real; wT2_i -= x[7].real; wT2_i += wT1_r; wT2_i -= wB1_r; wT2_r = wT2_i; wT2_r += x[2].imag; wT2_i = x[2].imag - wT2_i; x[2].imag = wT2_i; x[6].imag = wT2_r; /* x[1] x[5] */ wT2_r = wT1_r; wT2_r += wB1_i; wT2_r -= x[5].real; wT2_r -= x[7].imag; wT2_i = wT1_i; wT2_i -= wB1_r; wT2_i -= x[5].imag; wT2_i += x[7].real; wB2_r = wT2_r; wB2_r += wT2_i; wT2_i -= wT2_r; wB2_r *= HSQRT2; wT2_i *= HSQRT2; wT2_r = wB2_r; wB2_r += x[1].real; wT2_r = x[1].real - wT2_r; wB2_i = x[5].real; x[1].real = wB2_r; x[5].real = wT2_r; wT2_r = wT2_i; wT2_r += x[1].imag; wT2_i = x[1].imag - wT2_i; wB2_r = x[5].imag; x[1].imag = wT2_r; x[5].imag = wT2_i; /* x[3] x[7] */ wT1_r -= wB1_i; wT1_i += wB1_r; wB1_r = wB2_i - x[7].imag; wB1_i = wB2_r + x[7].real; wT1_r -= wB1_r; wT1_i -= wB1_i; wB1_r = wT1_r + wT1_i; wB1_r *= HSQRT2; wT1_i -= wT1_r; wT1_i *= HSQRT2; wB2_r = x[3].real; wB2_i = wB2_r + wT1_i; wB2_r -= wT1_i; x[3].real = wB2_i; x[7].real = wB2_r; wB2_i = x[3].imag; wB2_r = wB2_i + wB1_r; wB2_i -= wB1_r; x[3].imag = wB2_i; x[7].imag = wB2_r; } static void fft_128p(complex_t *a) { fft_8(&a[0]); fft_4(&a[8]); fft_4(&a[12]); fft_asmb16(&a[0], &a[8]); fft_8(&a[16]), fft_8(&a[24]); fft_asmb(4, &a[0], &a[16],&delta32[0], &delta32_3[0]); fft_8(&a[32]); fft_4(&a[40]); fft_4(&a[44]); fft_asmb16(&a[32], &a[40]); fft_8(&a[48]); fft_4(&a[56]); fft_4(&a[60]); fft_asmb16(&a[48], &a[56]); fft_asmb(8, &a[0], &a[32],&delta64[0], &delta64_3[0]); fft_8(&a[64]); fft_4(&a[72]); fft_4(&a[76]); /* fft_16(&a[64]); */ fft_asmb16(&a[64], &a[72]); fft_8(&a[80]); fft_8(&a[88]); /* fft_32(&a[64]); */ fft_asmb(4, &a[64], &a[80],&delta32[0], &delta32_3[0]); fft_8(&a[96]); fft_4(&a[104]), fft_4(&a[108]); /* fft_16(&a[96]); */ fft_asmb16(&a[96], &a[104]); fft_8(&a[112]), fft_8(&a[120]); /* fft_32(&a[96]); */ fft_asmb(4, &a[96], &a[112], &delta32[0], &delta32_3[0]); /* fft_128(&a[0]); */ fft_asmb(16, &a[0], &a[64], &delta128[0], &delta128_3[0]); }