static int RENAME(dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow) { int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ... const uint16_t *qmat, *bias; static __align8 int16_t temp_block[64]; //s->fdct (block); ff_fdct_mmx (block); //cant be anything else ... if (s->mb_intra) { int dummy; if (n < 4) q = s->y_dc_scale; else q = s->c_dc_scale; /* note: block[0] is assumed to be positive */ if (!s->h263_aic) { #if 1 asm volatile ( "imul %%ecx \n\t" : "=d" (level), "=a"(dummy) : "a" ((block[0]>>2) + q), "c" (inverse[q<<1]) ); #else asm volatile ( "xorl %%edx, %%edx \n\t" "divw %%cx \n\t" "movzwl %%ax, %%eax \n\t" : "=a" (level) : "a" ((block[0]>>2) + q), "c" (q<<1) : "%edx" ); #endif } else /* For AIC we skip quant/dequant of INTRADC */ level = (block[0] + 4)>>3; block[0]=0; //avoid fake overflow // temp_block[0] = (block[0] + (q >> 1)) / q; last_non_zero_p1 = 1; bias = s->q_intra_matrix16_bias[qscale]; qmat = s->q_intra_matrix16[qscale]; } else { last_non_zero_p1 = 0; bias = s->q_inter_matrix16_bias[qscale]; qmat = s->q_inter_matrix16[qscale]; } if(s->out_format == FMT_H263 && s->mpeg_quant==0){ /* PROLOGUE */ asm volatile( "movd %%eax, %%mm3 \n\t" // last_non_zero_p1 SPREADW(%%mm3) "pxor %%mm7, %%mm7 \n\t" // 0 "pxor %%mm4, %%mm4 \n\t" // 0 "movq (%1), %%mm5 \n\t" // qmat[0] "pxor %%mm6, %%mm6 \n\t" "psubw (%2), %%mm6 \n\t" // -bias[0] "movl $-128, %%eax \n\t" : "+a" (last_non_zero_p1) : "r" (qmat), "r" (bias) ); /* CORE */ asm volatile( ".balign 16 \n\t" "1: \n\t" "pxor %%mm1, %%mm1 \n\t" // 0 "movq (%1, %%eax), %%mm0 \n\t" // block[i] "pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00 "pxor %%mm1, %%mm0 \n\t" "psubw %%mm1, %%mm0 \n\t" // ABS(block[i]) "psubusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0] "pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16 "por %%mm0, %%mm4 \n\t" "pxor %%mm1, %%mm0 \n\t" "psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) "movq %%mm0, (%3, %%eax) \n\t" "pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00 "movq (%2, %%eax), %%mm1 \n\t" "movq %%mm7, (%1, %%eax) \n\t" // 0 "pandn %%mm1, %%mm0 \n\t" PMAXW(%%mm0, %%mm3) "addl $8, %%eax \n\t" " js 1b \n\t" : "+a" (last_non_zero_p1) : "r" (block+64), "r" (inv_zigzag_direct16+64), "r" (temp_block+64) ); /* EPILOGUE */ asm volatile( "movq %%mm3, %%mm0 \n\t" "psrlq $32, %%mm3 \n\t" PMAXW(%%mm0, %%mm3) "movq %%mm3, %%mm0 \n\t" "psrlq $16, %%mm3 \n\t" PMAXW(%%mm0, %%mm3) "movd %%mm3, %%eax \n\t" "movzbl %%al, %%eax \n\t" // last_non_zero_p1 "movd %2, %%mm1 \n\t" // max_qcoeff SPREADW(%%mm1) "psubusw %%mm1, %%mm4 \n\t" "packuswb %%mm4, %%mm4 \n\t" "movd %%mm4, %1 \n\t" // *overflow : "+a" (last_non_zero_p1), "=r" (*overflow) : "r" (s->max_qcoeff) ); }else{ // FMT_H263 asm volatile( "pushl %%ebp \n\t" "pushl %%ebx \n\t" "movl %0, %%ebp \n\t" "movl (%%ebp), %%ebx \n\t" "movd %%ebx, %%mm3 \n\t" // last_non_zero_p1 SPREADW(%%mm3) "pxor %%mm7, %%mm7 \n\t" // 0 "pxor %%mm4, %%mm4 \n\t" // 0 "movl $-128, %%ebx \n\t" ".balign 16 \n\t" "1: \n\t" "pxor %%mm1, %%mm1 \n\t" // 0 "movq (%1, %%ebx), %%mm0 \n\t" // block[i] "pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00 "pxor %%mm1, %%mm0 \n\t" "psubw %%mm1, %%mm0 \n\t" // ABS(block[i]) "movq (%3, %%ebx), %%mm6 \n\t" // bias[0] "paddusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0] "movq (%2, %%ebx), %%mm5 \n\t" // qmat[i] "pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16 "por %%mm0, %%mm4 \n\t" "pxor %%mm1, %%mm0 \n\t" "psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i]) "movq %%mm0, (%5, %%ebx) \n\t" "pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00 "movq (%4, %%ebx), %%mm1 \n\t" "movq %%mm7, (%1, %%ebx) \n\t" // 0 "pandn %%mm1, %%mm0 \n\t" PMAXW(%%mm0, %%mm3) "addl $8, %%ebx \n\t" " js 1b \n\t" "movq %%mm3, %%mm0 \n\t" "psrlq $32, %%mm3 \n\t" PMAXW(%%mm0, %%mm3) "movq %%mm3, %%mm0 \n\t" "psrlq $16, %%mm3 \n\t" PMAXW(%%mm0, %%mm3) "movd %%mm3, %%ebx \n\t" "movzbl %%bl, %%ebx \n\t" // last_non_zero_p1 "movl %%ebx, (%%ebp) \n\t" "popl %%ebx \n\t" "popl %%ebp \n\t" : : "m" (last_non_zero_p1), "r" (block+64), "r" (qmat+64), "r" (bias+64), "r" (inv_zigzag_direct16+64), "r" (temp_block+64) ); // note the asm is split cuz gcc doesnt like that many operands ... asm volatile( "movd %1, %%mm1 \n\t" // max_qcoeff SPREADW(%%mm1) "psubusw %%mm1, %%mm4 \n\t" "packuswb %%mm4, %%mm4 \n\t" "movd %%mm4, %0 \n\t" // *overflow : "=r" (*overflow) : "r" (s->max_qcoeff) ); } if(s->mb_intra) block[0]= level; else block[0]= temp_block[0]; if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){ if(last_non_zero_p1 <= 1) goto end; block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08]; block[0x20] = temp_block[0x10]; if(last_non_zero_p1 <= 4) goto end; block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02]; block[0x09] = temp_block[0x03]; if(last_non_zero_p1 <= 7) goto end; block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11]; block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20]; if(last_non_zero_p1 <= 11) goto end; block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12]; block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04]; block[0x0C] = temp_block[0x05]; if(last_non_zero_p1 <= 16) goto end; block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13]; block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21]; block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30]; block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22]; if(last_non_zero_p1 <= 24) goto end; block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14]; block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06]; block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E]; block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C]; if(last_non_zero_p1 <= 32) goto end; block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A]; block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38]; block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32]; block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24]; if(last_non_zero_p1 <= 40) goto end; block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16]; block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17]; block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25]; block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33]; if(last_non_zero_p1 <= 48) goto end; block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D]; block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E]; if(last_non_zero_p1 <= 56) goto end; block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C]; block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36]; block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37]; block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; }else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){ if(last_non_zero_p1 <= 1) goto end; block[0x04] = temp_block[0x01]; block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; if(last_non_zero_p1 <= 4) goto end; block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02]; block[0x05] = temp_block[0x03]; if(last_non_zero_p1 <= 7) goto end; block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11]; block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; if(last_non_zero_p1 <= 11) goto end; block[0x1C] = temp_block[0x19]; block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B]; block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05]; if(last_non_zero_p1 <= 16) goto end; block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13]; block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21]; block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22]; if(last_non_zero_p1 <= 24) goto end; block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14]; block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06]; block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E]; block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C]; if(last_non_zero_p1 <= 32) goto end; block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A]; block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38]; block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32]; block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24]; if(last_non_zero_p1 <= 40) goto end; block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16]; block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25]; block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33]; if(last_non_zero_p1 <= 48) goto end; block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B]; block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D]; block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E]; if(last_non_zero_p1 <= 56) goto end; block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C]; block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36]; block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; }else{ if(last_non_zero_p1 <= 1) goto end; block[0x01] = temp_block[0x01]; block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10]; if(last_non_zero_p1 <= 4) goto end; block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02]; block[0x03] = temp_block[0x03]; if(last_non_zero_p1 <= 7) goto end; block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11]; block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20]; if(last_non_zero_p1 <= 11) goto end; block[0x19] = temp_block[0x19]; block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B]; block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05]; if(last_non_zero_p1 <= 16) goto end; block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13]; block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21]; block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30]; block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22]; if(last_non_zero_p1 <= 24) goto end; block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14]; block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06]; block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E]; block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C]; if(last_non_zero_p1 <= 32) goto end; block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A]; block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38]; block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32]; block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24]; if(last_non_zero_p1 <= 40) goto end; block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16]; block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17]; block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25]; block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33]; if(last_non_zero_p1 <= 48) goto end; block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B]; block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D]; block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F]; block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E]; if(last_non_zero_p1 <= 56) goto end; block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C]; block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36]; block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37]; block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F]; } end: /* for(i=0; i<last_non_zero_p1; i++) { int j= zigzag_direct_noperm[i]; block[block_permute_op(j)]= temp_block[j]; } */ return last_non_zero_p1 - 1; }