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deblock_vert_useDC.c
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上传用户：hxb_1234
上传日期：2010-03-30
资源大小：8328k
文件大小：7k
源码类别：
VC书籍
开发平台：
Visual C++
- #include "postprocess_mmx.h"
- INLINE int deblock_vert_useDC(uint8_t *v, int stride) {
- const uint64_t mask = 0xfefefefefefefefe;
- uint32_t mm_data1;
- uint64_t *pmm1;
- int eq_cnt, useDC;
- #ifdef PP_SELF_CHECK
- int useDC2, i, j;
- #endif
- #ifdef PP_SELF_CHECK
- eq_cnt = 0;
- for (j=1; j<8; j++) {
- for (i=0; i<8; i++) {
- if (ABS(v[j*stride+i] - v[(j+1)*stride+i]) <= 1) eq_cnt++;
- }
- }
- useDC2 = (eq_cnt > DEBLOCK_VERT_USEDC_THR);
- #endif
- pmm1 = (uint64_t *)(&(v[stride]));
- __asm {
- push eax
- mov eax, pmm1
- movq mm6, mask /*mm6 = 0xfefefefefefefefe */
- pxor mm7, mm7 /*mm7 = 0x0000000000000000 */
- movq mm2, [eax] /* mm2 = *p_data */
- pxor mm4, mm4 /*mm4 = 0x0000000000000000 */
- add eax, stride /* p_data += stride */
- movq mm3, mm2 /* mm3 = *p_data */
- };
- __asm {
- movq mm2, [eax] /* mm2 = *p_data */
- movq mm0, mm3 /* mm0 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm0 /* mm1 = mm0 */
- psubusb mm0, mm2 /* mm0 -= mm2 */
- add eax, stride /* p_data += stride */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm0, mm2 /* mm0 |= mm2 */
- pand mm0, mm6 /* mm0 &= 0xfefefefefefefefe */
- pcmpeqb mm0, mm4 /* is mm0 == 0 ? */
- movq mm2, [eax] /* mm2 = *p_data */
- psubb mm7, mm0 /* mm7 has running total of eqcnts */
- movq mm5, mm3 /* mm5 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm5 /* mm1 = mm5 */
- psubusb mm5, mm2 /* mm5 -= mm2 */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm5, mm2 /* mm5 |= mm2 */
- add eax, stride /* p_data += stride */
- pand mm5, mm6 /* mm5 &= 0xfefefefefefefefe */
- pcmpeqb mm5, mm4 /* is mm0 == 0 ? */
- psubb mm7, mm5 /* mm7 has running total of eqcnts */
- movq mm2, [eax] /* mm2 = *p_data */
- movq mm0, mm3 /* mm0 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm0 /* mm1 = mm0 */
- psubusb mm0, mm2 /* mm0 -= mm2 */
- add eax, stride /* p_data += stride */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm0, mm2 /* mm0 |= mm2 */
- pand mm0, mm6 /* mm0 &= 0xfefefefefefefefe */
- pcmpeqb mm0, mm4 /* is mm0 == 0 ? */
- movq mm2, [eax] /* mm2 = *p_data */
- psubb mm7, mm0 /* mm7 has running total of eqcnts */
- movq mm5, mm3 /* mm5 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm5 /* mm1 = mm5 */
- psubusb mm5, mm2 /* mm5 -= mm2 */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm5, mm2 /* mm5 |= mm2 */
- add eax, stride /* p_data += stride */
- pand mm5, mm6 /* mm5 &= 0xfefefefefefefefe */
- pcmpeqb mm5, mm4 /* is mm0 == 0 ? */
- psubb mm7, mm5 /* mm7 has running total of eqcnts */
- movq mm2, [eax] /* mm2 = *p_data */
- movq mm0, mm3 /* mm0 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm0 /* mm1 = mm0 */
- psubusb mm0, mm2 /* mm0 -= mm2 */
- add eax, stride /* p_data += stride */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm0, mm2 /* mm0 |= mm2 */
- pand mm0, mm6 /* mm0 &= 0xfefefefefefefefe */
- pcmpeqb mm0, mm4 /* is mm0 == 0 ? */
- movq mm2, [eax] /* mm2 = *p_data */
- psubb mm7, mm0 /* mm7 has running total of eqcnts */
- movq mm5, mm3 /* mm5 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm5 /* mm1 = mm5 */
- psubusb mm5, mm2 /* mm5 -= mm2 */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm5, mm2 /* mm5 |= mm2 */
- add eax, stride /* p_data += stride */
- pand mm5, mm6 /* mm5 &= 0xfefefefefefefefe */
- pcmpeqb mm5, mm4 /* is mm0 == 0 ? */
- psubb mm7, mm5 /* mm7 has running total of eqcnts */
- movq mm2, [eax] /* mm2 = *p_data */
- movq mm0, mm3 /* mm0 = mm3 */
- movq mm3, mm2 /* mm3 = *p_data */
- movq mm1, mm0 /* mm1 = mm0 */
- psubusb mm0, mm2 /* mm0 -= mm2 */
- add eax, stride /* p_data += stride */
- psubusb mm2, mm1 /* mm2 -= mm1 */
- por mm0, mm2 /* mm0 |= mm2 */
- pand mm0, mm6 /* mm0 &= 0xfefefefefefefefe */
- pcmpeqb mm0, mm4 /* is mm0 == 0 ? */
- psubb mm7, mm0 /* mm7 has running total of eqcnts */
- pop eax
- };
- __asm {
- movq mm1, mm7 /* mm1 = mm7 0 1w2 3 4 5 6 7r */
- psrlq mm7, 32 /* mm7 >>= 32 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 mm1, mm7 /* mm7 has running total of eqcnts */
- movq mm7, mm1 /* 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 mm_data1, mm7 /* mm_data1 = mm7 */
- };
- eq_cnt = mm_data1 & 0xff;
- useDC = (eq_cnt > DEBLOCK_VERT_USEDC_THR);
- #ifdef PP_SELF_CHECK
- if (useDC != useDC2) printf("ERROR: MMX version of useDC is incorrectn");
- #endif
- return useDC;
- }
