static void gmc_mmx(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int oy, int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height) { const int w = 8; const int ix = ox >> (16 + shift); const int iy = oy >> (16 + shift); const int oxs = ox >> 4; const int oys = oy >> 4; const int dxxs = dxx >> 4; const int dxys = dxy >> 4; const int dyxs = dyx >> 4; const int dyys = dyy >> 4; const uint16_t r4[4] = { r, r, r, r }; const uint16_t dxy4[4] = { dxys, dxys, dxys, dxys }; const uint16_t dyy4[4] = { dyys, dyys, dyys, dyys }; const uint64_t shift2 = 2 * shift; #define MAX_STRIDE 4096U #define MAX_H 8U uint8_t edge_buf[(MAX_H + 1) * MAX_STRIDE]; int x, y; const int dxw = (dxx - (1 << (16 + shift))) * (w - 1); const int dyh = (dyy - (1 << (16 + shift))) * (h - 1); const int dxh = dxy * (h - 1); const int dyw = dyx * (w - 1); int need_emu = (unsigned) ix >= width - w || (unsigned) iy >= height - h; if ( // non-constant fullpel offset (3% of blocks) ((ox ^ (ox + dxw)) | (ox ^ (ox + dxh)) | (ox ^ (ox + dxw + dxh)) | (oy ^ (oy + dyw)) | (oy ^ (oy + dyh)) | (oy ^ (oy + dyw + dyh))) >> (16 + shift) || // uses more than 16 bits of subpel mv (only at huge resolution) (dxx | dxy | dyx | dyy) & 15 || (need_emu && (h > MAX_H || stride > MAX_STRIDE))) { // FIXME could still use mmx for some of the rows ff_gmc_c(dst, src, stride, h, ox, oy, dxx, dxy, dyx, dyy, shift, r, width, height); return; } src += ix + iy * stride; if (need_emu) { ff_emulated_edge_mc_8(edge_buf, src, stride, stride, w + 1, h + 1, ix, iy, width, height); src = edge_buf; } __asm__ volatile ( "movd %0, %%mm6 \n\t" "pxor %%mm7, %%mm7 \n\t" "punpcklwd %%mm6, %%mm6 \n\t" "punpcklwd %%mm6, %%mm6 \n\t" :: "r" (1 << shift)); for (x = 0; x < w; x += 4) { uint16_t dx4[4] = { oxs - dxys + dxxs * (x + 0), oxs - dxys + dxxs * (x + 1), oxs - dxys + dxxs * (x + 2), oxs - dxys + dxxs * (x + 3) }; uint16_t dy4[4] = { oys - dyys + dyxs * (x + 0), oys - dyys + dyxs * (x + 1), oys - dyys + dyxs * (x + 2), oys - dyys + dyxs * (x + 3) }; for (y = 0; y < h; y++) { __asm__ volatile ( "movq %0, %%mm4 \n\t" "movq %1, %%mm5 \n\t" "paddw %2, %%mm4 \n\t" "paddw %3, %%mm5 \n\t" "movq %%mm4, %0 \n\t" "movq %%mm5, %1 \n\t" "psrlw $12, %%mm4 \n\t" "psrlw $12, %%mm5 \n\t" : "+m" (*dx4), "+m" (*dy4) : "m" (*dxy4), "m" (*dyy4)); __asm__ volatile ( "movq %%mm6, %%mm2 \n\t" "movq %%mm6, %%mm1 \n\t" "psubw %%mm4, %%mm2 \n\t" "psubw %%mm5, %%mm1 \n\t" "movq %%mm2, %%mm0 \n\t" "movq %%mm4, %%mm3 \n\t" "pmullw %%mm1, %%mm0 \n\t" // (s - dx) * (s - dy) "pmullw %%mm5, %%mm3 \n\t" // dx * dy "pmullw %%mm5, %%mm2 \n\t" // (s - dx) * dy "pmullw %%mm4, %%mm1 \n\t" // dx * (s - dy) "movd %4, %%mm5 \n\t" "movd %3, %%mm4 \n\t" "punpcklbw %%mm7, %%mm5 \n\t" "punpcklbw %%mm7, %%mm4 \n\t" "pmullw %%mm5, %%mm3 \n\t" // src[1, 1] * dx * dy "pmullw %%mm4, %%mm2 \n\t" // src[0, 1] * (s - dx) * dy "movd %2, %%mm5 \n\t" "movd %1, %%mm4 \n\t" "punpcklbw %%mm7, %%mm5 \n\t" "punpcklbw %%mm7, %%mm4 \n\t" "pmullw %%mm5, %%mm1 \n\t" // src[1, 0] * dx * (s - dy) "pmullw %%mm4, %%mm0 \n\t" // src[0, 0] * (s - dx) * (s - dy) "paddw %5, %%mm1 \n\t" "paddw %%mm3, %%mm2 \n\t" "paddw %%mm1, %%mm0 \n\t" "paddw %%mm2, %%mm0 \n\t" "psrlw %6, %%mm0 \n\t" "packuswb %%mm0, %%mm0 \n\t" "movd %%mm0, %0 \n\t" : "=m" (dst[x + y * stride]) : "m" (src[0]), "m" (src[1]), "m" (src[stride]), "m" (src[stride + 1]), "m" (*r4), "m" (shift2)); src += stride; } src += 4 - h * stride; } }