1/* 2 * MPEG video MMX templates 3 * 4 * Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at> 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23#include <stdint.h> 24 25#include "libavutil/internal.h" 26#include "libavutil/mem_internal.h" 27#include "libavutil/x86/asm.h" 28#include "libavcodec/mpegutils.h" 29#include "libavcodec/mpegvideo.h" 30#include "fdct.h" 31 32#undef MMREG_WIDTH 33#undef MM 34#undef MOVQ 35#undef SPREADW 36#undef PMAXW 37#undef PMAX 38#undef SAVE_SIGN 39#undef RESTORE_SIGN 40 41#if COMPILE_TEMPLATE_SSE2 42#define MMREG_WIDTH "16" 43#define MM "%%xmm" 44#define MOVQ "movdqa" 45#define SPREADW(a) \ 46 "pshuflw $0, "a", "a" \n\t"\ 47 "punpcklwd "a", "a" \n\t" 48#define PMAXW(a,b) "pmaxsw "a", "b" \n\t" 49#define PMAX(a,b) \ 50 "movhlps "a", "b" \n\t"\ 51 PMAXW(b, a)\ 52 "pshuflw $0x0E, "a", "b" \n\t"\ 53 PMAXW(b, a)\ 54 "pshuflw $0x01, "a", "b" \n\t"\ 55 PMAXW(b, a) 56#else 57#define MMREG_WIDTH "8" 58#define MM "%%mm" 59#define MOVQ "movq" 60#define SPREADW(a) \ 61 "punpcklwd "a", "a" \n\t"\ 62 "punpcklwd "a", "a" \n\t" 63#define PMAXW(a,b) \ 64 "psubusw "a", "b" \n\t"\ 65 "paddw "a", "b" \n\t" 66#define PMAX(a,b) \ 67 "movq "a", "b" \n\t"\ 68 "psrlq $32, "a" \n\t"\ 69 PMAXW(b, a)\ 70 "movq "a", "b" \n\t"\ 71 "psrlq $16, "a" \n\t"\ 72 PMAXW(b, a) 73 74#endif 75 76#if COMPILE_TEMPLATE_SSSE3 77#define SAVE_SIGN(a,b) \ 78 "movdqa "b", "a" \n\t"\ 79 "pabsw "b", "b" \n\t" 80#define RESTORE_SIGN(a,b) \ 81 "psignw "a", "b" \n\t" 82#else 83#define SAVE_SIGN(a,b) \ 84 "pxor "a", "a" \n\t"\ 85 "pcmpgtw "b", "a" \n\t" /* block[i] <= 0 ? 0xFF : 0x00 */\ 86 "pxor "a", "b" \n\t"\ 87 "psubw "a", "b" \n\t" /* ABS(block[i]) */ 88#define RESTORE_SIGN(a,b) \ 89 "pxor "a", "b" \n\t"\ 90 "psubw "a", "b" \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) 91#endif 92 93static int RENAME(dct_quantize)(MpegEncContext *s, 94 int16_t *block, int n, 95 int qscale, int *overflow) 96{ 97 x86_reg last_non_zero_p1; 98 int level=0, q; //=0 is because gcc says uninitialized ... 99 const uint16_t *qmat, *bias; 100 LOCAL_ALIGNED_16(int16_t, temp_block, [64]); 101 102 av_assert2((7&(uintptr_t)(&temp_block[0])) == 0); //did gcc align it correctly? 103 104 //s->fdct (block); 105 RENAME_FDCT(ff_fdct)(block); // cannot be anything else ... 106 107 if(s->dct_error_sum) 108 s->denoise_dct(s, block); 109 110 if (s->mb_intra) { 111 int dummy; 112 if (n < 4){ 113 q = s->y_dc_scale; 114 bias = s->q_intra_matrix16[qscale][1]; 115 qmat = s->q_intra_matrix16[qscale][0]; 116 }else{ 117 q = s->c_dc_scale; 118 bias = s->q_chroma_intra_matrix16[qscale][1]; 119 qmat = s->q_chroma_intra_matrix16[qscale][0]; 120 } 121 /* note: block[0] is assumed to be positive */ 122 if (!s->h263_aic) { 123 __asm__ volatile ( 124 "mul %%ecx \n\t" 125 : "=d" (level), "=a"(dummy) 126 : "a" ((block[0]>>2) + q), "c" (ff_inverse[q<<1]) 127 ); 128 } else 129 /* For AIC we skip quant/dequant of INTRADC */ 130 level = (block[0] + 4)>>3; 131 132 block[0]=0; //avoid fake overflow 133// temp_block[0] = (block[0] + (q >> 1)) / q; 134 last_non_zero_p1 = 1; 135 } else { 136 last_non_zero_p1 = 0; 137 bias = s->q_inter_matrix16[qscale][1]; 138 qmat = s->q_inter_matrix16[qscale][0]; 139 } 140 141 if((s->out_format == FMT_H263 || s->out_format == FMT_H261) && s->mpeg_quant==0){ 142 143 __asm__ volatile( 144 "movd %%"FF_REG_a", "MM"3 \n\t" // last_non_zero_p1 145 SPREADW(MM"3") 146 "pxor "MM"7, "MM"7 \n\t" // 0 147 "pxor "MM"4, "MM"4 \n\t" // 0 148 MOVQ" (%2), "MM"5 \n\t" // qmat[0] 149 "pxor "MM"6, "MM"6 \n\t" 150 "psubw (%3), "MM"6 \n\t" // -bias[0] 151 "mov $-128, %%"FF_REG_a" \n\t" 152 ".p2align 4 \n\t" 153 "1: \n\t" 154 MOVQ" (%1, %%"FF_REG_a"), "MM"0 \n\t" // block[i] 155 SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) 156 "psubusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] 157 "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16 158 "por "MM"0, "MM"4 \n\t" 159 RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) 160 MOVQ" "MM"0, (%5, %%"FF_REG_a") \n\t" 161 "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 162 MOVQ" (%4, %%"FF_REG_a"), "MM"1 \n\t" 163 MOVQ" "MM"7, (%1, %%"FF_REG_a") \n\t" // 0 164 "pandn "MM"1, "MM"0 \n\t" 165 PMAXW(MM"0", MM"3") 166 "add $"MMREG_WIDTH", %%"FF_REG_a" \n\t" 167 " js 1b \n\t" 168 PMAX(MM"3", MM"0") 169 "movd "MM"3, %%"FF_REG_a" \n\t" 170 "movzbl %%al, %%eax \n\t" // last_non_zero_p1 171 : "+a" (last_non_zero_p1) 172 : "r" (block+64), "r" (qmat), "r" (bias), 173 "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64) 174 XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", 175 "%xmm4", "%xmm5", "%xmm6", "%xmm7") 176 ); 177 }else{ // FMT_H263 178 __asm__ volatile( 179 "movd %%"FF_REG_a", "MM"3 \n\t" // last_non_zero_p1 180 SPREADW(MM"3") 181 "pxor "MM"7, "MM"7 \n\t" // 0 182 "pxor "MM"4, "MM"4 \n\t" // 0 183 "mov $-128, %%"FF_REG_a" \n\t" 184 ".p2align 4 \n\t" 185 "1: \n\t" 186 MOVQ" (%1, %%"FF_REG_a"), "MM"0 \n\t" // block[i] 187 SAVE_SIGN(MM"1", MM"0") // ABS(block[i]) 188 MOVQ" (%3, %%"FF_REG_a"), "MM"6 \n\t" // bias[0] 189 "paddusw "MM"6, "MM"0 \n\t" // ABS(block[i]) + bias[0] 190 MOVQ" (%2, %%"FF_REG_a"), "MM"5 \n\t" // qmat[i] 191 "pmulhw "MM"5, "MM"0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16 192 "por "MM"0, "MM"4 \n\t" 193 RESTORE_SIGN(MM"1", MM"0") // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) 194 MOVQ" "MM"0, (%5, %%"FF_REG_a") \n\t" 195 "pcmpeqw "MM"7, "MM"0 \n\t" // out==0 ? 0xFF : 0x00 196 MOVQ" (%4, %%"FF_REG_a"), "MM"1 \n\t" 197 MOVQ" "MM"7, (%1, %%"FF_REG_a") \n\t" // 0 198 "pandn "MM"1, "MM"0 \n\t" 199 PMAXW(MM"0", MM"3") 200 "add $"MMREG_WIDTH", %%"FF_REG_a" \n\t" 201 " js 1b \n\t" 202 PMAX(MM"3", MM"0") 203 "movd "MM"3, %%"FF_REG_a" \n\t" 204 "movzbl %%al, %%eax \n\t" // last_non_zero_p1 205 : "+a" (last_non_zero_p1) 206 : "r" (block+64), "r" (qmat+64), "r" (bias+64), 207 "r" (inv_zigzag_direct16 + 64), "r" (temp_block + 64) 208 XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3", 209 "%xmm4", "%xmm5", "%xmm6", "%xmm7") 210 ); 211 } 212 __asm__ volatile( 213 "movd %1, "MM"1 \n\t" // max_qcoeff 214 SPREADW(MM"1") 215 "psubusw "MM"1, "MM"4 \n\t" 216 "packuswb "MM"4, "MM"4 \n\t" 217#if COMPILE_TEMPLATE_SSE2 218 "packsswb "MM"4, "MM"4 \n\t" 219#endif 220 "movd "MM"4, %0 \n\t" // *overflow 221 : "=g" (*overflow) 222 : "g" (s->max_qcoeff) 223 ); 224 225 if(s->mb_intra) block[0]= level; 226 else block[0]= temp_block[0]; 227 228 if (s->idsp.perm_type == FF_IDCT_PERM_SIMPLE) { 229 if(last_non_zero_p1 <= 1) goto end; 230 block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08]; 231 block[0x20] = temp_block[0x10]; 232 if(last_non_zero_p1 <= 4) goto end; 233 block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02]; 234 block[0x09] = temp_block[0x03]; 235 if(last_non_zero_p1 <= 7) goto end; 236 block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11]; 237 block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20]; 238 if(last_non_zero_p1 <= 11) goto end; 239 block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12]; 240 block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04]; 241 block[0x0C] = temp_block[0x05]; 242 if(last_non_zero_p1 <= 16) goto end; 243 block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13]; 244 block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21]; 245 block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30]; 246 block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22]; 247 if(last_non_zero_p1 <= 24) goto end; 248 block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14]; 249 block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06]; 250 block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E]; 251 block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C]; 252 if(last_non_zero_p1 <= 32) goto end; 253 block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A]; 254 block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38]; 255 block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32]; 256 block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24]; 257 if(last_non_zero_p1 <= 40) goto end; 258 block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16]; 259 block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17]; 260 block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25]; 261 block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33]; 262 if(last_non_zero_p1 <= 48) goto end; 263 block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; 264 block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D]; 265 block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; 266 block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E]; 267 if(last_non_zero_p1 <= 56) goto end; 268 block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C]; 269 block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36]; 270 block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37]; 271 block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; 272 }else if(s->idsp.perm_type == FF_IDCT_PERM_LIBMPEG2){ 273 if(last_non_zero_p1 <= 1) goto end; 274 block[0x04] = temp_block[0x01]; 275 block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; 276 if(last_non_zero_p1 <= 4) goto end; 277 block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02]; 278 block[0x05] = temp_block[0x03]; 279 if(last_non_zero_p1 <= 7) goto end; 280 block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11]; 281 block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; 282 if(last_non_zero_p1 <= 11) goto end; 283 block[0x1C] = temp_block[0x19]; 284 block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B]; 285 block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05]; 286 if(last_non_zero_p1 <= 16) goto end; 287 block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13]; 288 block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21]; 289 block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; 290 block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22]; 291 if(last_non_zero_p1 <= 24) goto end; 292 block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14]; 293 block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06]; 294 block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E]; 295 block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C]; 296 if(last_non_zero_p1 <= 32) goto end; 297 block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A]; 298 block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38]; 299 block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32]; 300 block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24]; 301 if(last_non_zero_p1 <= 40) goto end; 302 block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16]; 303 block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; 304 block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25]; 305 block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33]; 306 if(last_non_zero_p1 <= 48) goto end; 307 block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B]; 308 block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D]; 309 block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; 310 block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E]; 311 if(last_non_zero_p1 <= 56) goto end; 312 block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C]; 313 block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36]; 314 block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; 315 block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; 316 } else if (s->idsp.perm_type == FF_IDCT_PERM_NONE) { 317 if(last_non_zero_p1 <= 1) goto end; 318 block[0x01] = temp_block[0x01]; 319 block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; 320 if(last_non_zero_p1 <= 4) goto end; 321 block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02]; 322 block[0x03] = temp_block[0x03]; 323 if(last_non_zero_p1 <= 7) goto end; 324 block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11]; 325 block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; 326 if(last_non_zero_p1 <= 11) goto end; 327 block[0x19] = temp_block[0x19]; 328 block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B]; 329 block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05]; 330 if(last_non_zero_p1 <= 16) goto end; 331 block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13]; 332 block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21]; 333 block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; 334 block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22]; 335 if(last_non_zero_p1 <= 24) goto end; 336 block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14]; 337 block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06]; 338 block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E]; 339 block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C]; 340 if(last_non_zero_p1 <= 32) goto end; 341 block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A]; 342 block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38]; 343 block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32]; 344 block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24]; 345 if(last_non_zero_p1 <= 40) goto end; 346 block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16]; 347 block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; 348 block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25]; 349 block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33]; 350 if(last_non_zero_p1 <= 48) goto end; 351 block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; 352 block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D]; 353 block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; 354 block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E]; 355 if(last_non_zero_p1 <= 56) goto end; 356 block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C]; 357 block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36]; 358 block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; 359 block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; 360 } else if (s->idsp.perm_type == FF_IDCT_PERM_TRANSPOSE) { 361 if(last_non_zero_p1 <= 1) goto end; 362 block[0x08] = temp_block[0x01]; 363 block[0x01] = temp_block[0x08]; block[0x02] = temp_block[0x10]; 364 if(last_non_zero_p1 <= 4) goto end; 365 block[0x09] = temp_block[0x09]; block[0x10] = temp_block[0x02]; 366 block[0x18] = temp_block[0x03]; 367 if(last_non_zero_p1 <= 7) goto end; 368 block[0x11] = temp_block[0x0A]; block[0x0A] = temp_block[0x11]; 369 block[0x03] = temp_block[0x18]; block[0x04] = temp_block[0x20]; 370 if(last_non_zero_p1 <= 11) goto end; 371 block[0x0B] = temp_block[0x19]; 372 block[0x12] = temp_block[0x12]; block[0x19] = temp_block[0x0B]; 373 block[0x20] = temp_block[0x04]; block[0x28] = temp_block[0x05]; 374 if(last_non_zero_p1 <= 16) goto end; 375 block[0x21] = temp_block[0x0C]; block[0x1A] = temp_block[0x13]; 376 block[0x13] = temp_block[0x1A]; block[0x0C] = temp_block[0x21]; 377 block[0x05] = temp_block[0x28]; block[0x06] = temp_block[0x30]; 378 block[0x0D] = temp_block[0x29]; block[0x14] = temp_block[0x22]; 379 if(last_non_zero_p1 <= 24) goto end; 380 block[0x1B] = temp_block[0x1B]; block[0x22] = temp_block[0x14]; 381 block[0x29] = temp_block[0x0D]; block[0x30] = temp_block[0x06]; 382 block[0x38] = temp_block[0x07]; block[0x31] = temp_block[0x0E]; 383 block[0x2A] = temp_block[0x15]; block[0x23] = temp_block[0x1C]; 384 if(last_non_zero_p1 <= 32) goto end; 385 block[0x1C] = temp_block[0x23]; block[0x15] = temp_block[0x2A]; 386 block[0x0E] = temp_block[0x31]; block[0x07] = temp_block[0x38]; 387 block[0x0F] = temp_block[0x39]; block[0x16] = temp_block[0x32]; 388 block[0x1D] = temp_block[0x2B]; block[0x24] = temp_block[0x24]; 389 if(last_non_zero_p1 <= 40) goto end; 390 block[0x2B] = temp_block[0x1D]; block[0x32] = temp_block[0x16]; 391 block[0x39] = temp_block[0x0F]; block[0x3A] = temp_block[0x17]; 392 block[0x33] = temp_block[0x1E]; block[0x2C] = temp_block[0x25]; 393 block[0x25] = temp_block[0x2C]; block[0x1E] = temp_block[0x33]; 394 if(last_non_zero_p1 <= 48) goto end; 395 block[0x17] = temp_block[0x3A]; block[0x1F] = temp_block[0x3B]; 396 block[0x26] = temp_block[0x34]; block[0x2D] = temp_block[0x2D]; 397 block[0x34] = temp_block[0x26]; block[0x3B] = temp_block[0x1F]; 398 block[0x3C] = temp_block[0x27]; block[0x35] = temp_block[0x2E]; 399 if(last_non_zero_p1 <= 56) goto end; 400 block[0x2E] = temp_block[0x35]; block[0x27] = temp_block[0x3C]; 401 block[0x2F] = temp_block[0x3D]; block[0x36] = temp_block[0x36]; 402 block[0x3D] = temp_block[0x2F]; block[0x3E] = temp_block[0x37]; 403 block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; 404 } else { 405 av_log(s, AV_LOG_DEBUG, "s->idsp.perm_type: %d\n", 406 (int)s->idsp.perm_type); 407 av_assert0(s->idsp.perm_type == FF_IDCT_PERM_NONE || 408 s->idsp.perm_type == FF_IDCT_PERM_LIBMPEG2 || 409 s->idsp.perm_type == FF_IDCT_PERM_SIMPLE || 410 s->idsp.perm_type == FF_IDCT_PERM_TRANSPOSE); 411 } 412 end: 413 return last_non_zero_p1 - 1; 414} 415