English
deblock_horiz_useDC.c
资源名称：VC++视频传输.rar [点击查看]
上传用户：hxb_1234
上传日期：2010-03-30
资源大小：8328k
文件大小：5k
源码类别：
VC书籍
开发平台：
Visual C++
- #include "postprocess_mmx.h"
- INLINE int deblock_horiz_useDC(uint8_t *v, int stride) {
- const uint64_t mm64_mask = 0x00fefefefefefefe;
- uint32_t mm32_result;
- uint64_t *pmm1;
- int eq_cnt, useDC;
- #ifdef PP_SELF_CHECK
- int eq_cnt2, j, k;
- #endif
- pmm1 = (uint64_t *)(&(v[1]));
- __asm {
- push eax
- mov eax, pmm1
- movq mm6, mm64_mask /*mm6 = 0x00fefefefefefefe */
- pxor mm4, mm4 /*mm4 = 0x0000000000000000 */
- movq mm1, qword ptr [eax] /* mm1 = *pmm 0 1 2 3 4 5 6 7 */
- add eax, stride /* eax += stride/8 0 1 2 3 4 5 6 7 */
- movq mm5, mm1 /* mm5 = mm1 0 1 2 3 4 5 6 7 */
- psrlq mm1, 8 /* mm1 >>= 8 0 1 2 3 4 5 6 7 */
- movq mm2, mm5 /* mm2 = mm5 0 1 2 3 4 5 6 7 */
- psubusb mm5, mm1 /* mm5 -= mm1 0 1 2 3 4 5 6 7 */
- movq mm3, qword ptr [eax] /* mm3 = *pmm 0 1 2 3 4 5 6 7 */
- psubusb mm1, mm2 /* mm1 -= mm2 0 1 2 3 4 5 6 7 */
- add eax, stride /* eax += stride/8 0 1 2 3 4 5 6 7 */
- por mm5, mm1 /* mm5 |= mm1 0 1 2 3 4 5 6 7 */
- movq mm0, mm3 /* mm0 = mm3 0 1 2 3 4 5 6 7 */
- pand mm5, mm6 /* mm5 &= 0xfefefefefefefefe */
- pxor mm7, mm7 /*mm7 = 0x0000000000000000 */
- pcmpeqb mm5, mm4 /* are the bytes of mm5 == 0 ? */
- movq mm1, qword ptr [eax] /* mm3 = *pmm 0 1 2 3 4 5 6 7 */
- psubb mm7, mm5 /* mm7 has running total of eqcnts */
- psrlq mm3, 8 /* mm3 >>= 8 0 1 2 3 4 5 6 7 */
- movq mm5, mm0 /* mm5 = mm0 0 1 2 3 4 5 6 7 */
- psubusb mm0, mm3 /* mm0 -= mm3 0 1 2 3 4 5 6 7 */
- add eax, stride /* eax += stride/8 0 1 2 3 4 5 6 7 */
- psubusb mm3, mm5 /* mm3 -= mm5 0 1 2 3 4 5 6 7 */
- movq mm5, qword ptr [eax] /* mm5 = *pmm 0 1 2 3 4 5 6 7 */
- por mm0, mm3 /* mm0 |= mm3 0 1 2 3 4 5 6 7 */
- movq mm3, mm1 /* mm3 = mm1 0 1 2 3 4 5 6 7 */
- pand mm0, mm6 /* mm0 &= 0xfefefefefefefefe */
- psrlq mm1, 8 /* mm1 >>= 8 0 1 2 3 4 5 6 7 */
- pcmpeqb mm0, mm4 /* are the bytes of mm0 == 0 ? */
- movq mm2, mm3 /* mm2 = mm3 0 1 2 3 4 5 6 7 */
- psubb mm7, mm0 /* mm7 has running total of eqcnts */
- psubusb mm3, mm1 /* mm3 -= mm1 0 1 2 3 4 5 6 7 */
- psubusb mm1, mm2 /* mm1 -= mm2 0 1 2 3 4 5 6 7 */
- por mm3, mm1 /* mm3 |= mm1 0 1 2 3 4 5 6 7 */
- movq mm1, mm5 /* mm1 = mm5 0 1 2 3 4 5 6 7 */
- pand mm3, mm6 /* mm3 &= 0xfefefefefefefefe */
- psrlq mm5, 8 /* mm5 >>= 8 0 1 2 3 4 5 6 7 */
- pcmpeqb mm3, mm4 /* are the bytes of mm3 == 0 ? */
- movq mm0, mm1 /* mm0 = mm1 0 1 2 3 4 5 6 7 */
- psubb mm7, mm3 /* mm7 has running total of eqcnts */
- psubusb mm1, mm5 /* mm1 -= mm5 0 1 2 3 4 5 6 7 */
- psubusb mm5, mm0 /* mm5 -= mm0 0 1 2 3 4 5 6 7 */
- por mm1, mm5 /* mm1 |= mm5 0 1 2 3 4 5 6 7 */
- pand mm1, mm6 /* mm1 &= 0xfefefefefefefefe */
- pcmpeqb mm1, mm4 /* are the bytes of mm1 == 0 ? */
- psubb mm7, mm1 /* mm7 has running total of eqcnts */
- movq mm1, mm7 /* mm1 = mm7 0 1w2 3 4 5 6 7r */
- psllq mm7, 8 /* mm7 >>= 24 0 1 2 3 4 5 6 7m */
- psrlq mm1, 24 /* mm7 >>= 24 0 1 2 3 4 5 6 7m */
- paddb mm7, mm1 /* mm7 has running total of eqcnts */
- movq mm1, mm7 /* mm1 = mm7 0 1w2 3 4 5 6 7r */
- psrlq mm7, 16 /* mm7 >>= 16 0 1 2 3 4 5 6 7m */
- paddb mm7, mm1 /* mm7 has running total of eqcnts */
- movq mm1, mm7 /* mm1 = mm7 0 1w2 3 4 5 6 7r */
- psrlq mm7, 8 /* mm7 >>= 8 0 1 2 3 4 5 6 7m */
- paddb mm7, mm1 /* mm7 has running total of eqcnts */
- movd mm32_result, mm7
- pop eax
- };
- eq_cnt = mm32_result & 0xff;
- #ifdef PP_SELF_CHECK
- eq_cnt2 = 0;
- for (k=0; k<4; k++) {
- for (j=1; j<=7; j++) {
- if (ABS(v[j+k*stride]-v[1+j+k*stride]) <= 1) eq_cnt2++;
- }
- }
- if (eq_cnt2 != eq_cnt) printf("ERROR: MMX version of useDC is incorrectn");
- #endif
- useDC = eq_cnt >= DEBLOCK_HORIZ_USEDC_THR;
- return useDC;
- }
