level = block[0];
level = block[0]>>3;
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 *qmat, *bias;    static __align8 INT16 temp_block[64];    //s->fdct (block);    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 (        	"xorl %%edx, %%edx	\n\t"        	"mul %%ecx		\n\t"        	: "=d" (level), "=a"(dummy)        	: "a" (block[0] + (q >> 1)), "c" (inverse[q])        );#else        asm volatile (        	"xorl %%edx, %%edx	\n\t"        	"divw %%cx		\n\t"        	"movzwl %%ax, %%eax	\n\t"        	: "=a" (level)        	: "a" (block[0] + (q >> 1)), "c" (q)        	: "%edx"        );#endif        } else            /* For AIC we skip quant/dequant of INTRADC */            level = block[0];                    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){            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 (%2), %%mm5			\n\t" // qmat[0]            "pxor %%mm6, %%mm6			\n\t"            "psubw (%3), %%mm6			\n\t" // -bias[0]            "movl $-128, %%eax			\n\t"            ".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, (%5, %%eax)		\n\t"            "pcmpeqw %%mm7, %%mm0		\n\t" // out==0 ? 0xFF : 0x00            "movq (%4, %%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"            "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	    : "+a" (last_non_zero_p1)            : "r" (block+64), "r" (qmat), "r" (bias),              "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        : "=g" (*overflow)        : "g" (s->max_qcoeff)        );    }else{ // FMT_H263        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            "movl $-128, %%eax			\n\t"            ".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])            "movq (%3, %%eax), %%mm6		\n\t" // bias[0]            "paddusw %%mm6, %%mm0		\n\t" // ABS(block[i]) + bias[0]            "movq (%2, %%eax), %%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, %%eax)		\n\t"            "pcmpeqw %%mm7, %%mm0		\n\t" // out==0 ? 0xFF : 0x00            "movq (%4, %%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"            "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	    : "+a" (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        : "=g" (*overflow)        : "g" (s->max_qcoeff)        );    }    if(s->mb_intra) temp_block[0]= level; //FIXME move afer permute        // last_non_zero_p1=64;           /* permute for IDCT */    asm volatile(        "movl %0, %%eax			\n\t"	"pushl %%ebp			\n\t"	"movl %%esp, " MANGLE(esp_temp) "\n\t"	"1:				\n\t"	"movzbl (%1, %%eax), %%ebx	\n\t"	"movzbl 1(%1, %%eax), %%ebp	\n\t"	"movw (%2, %%ebx, 2), %%cx	\n\t"	"movw (%2, %%ebp, 2), %%sp	\n\t"	"movzbl " MANGLE(permutation) "(%%ebx), %%ebx\n\t"	"movzbl " MANGLE(permutation) "(%%ebp), %%ebp\n\t"	"movw %%cx, (%3, %%ebx, 2)	\n\t"	"movw %%sp, (%3, %%ebp, 2)	\n\t"	"addl $2, %%eax			\n\t"	" js 1b				\n\t"	"movl " MANGLE(esp_temp) ", %%esp\n\t"	"popl %%ebp			\n\t"	: 	: "g" (-last_non_zero_p1), "d" (zigzag_direct_noperm+last_non_zero_p1), "S" (temp_block), "D" (block)	: "%eax", "%ebx", "%ecx"	);/*    for(i=0; i<last_non_zero_p1; i++)    {       int j= zigzag_direct_noperm[i];       block[block_permute_op(j)]= temp_block[j];    }*///block_permute(block);    return last_non_zero_p1 - 1;}