| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "config.h" |
| #include "libavutil/attributes.h" |
| #include "libavutil/cpu.h" |
| #include "libavutil/x86/cpu.h" |
| #include "libavcodec/mpegvideodsp.h" |
| #include "libavcodec/videodsp.h" |
| |
| #if HAVE_INLINE_ASM |
| |
| 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 || width < w || |
| (unsigned) iy >= height - h || 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; |
| } |
| } |
| |
| #endif /* HAVE_INLINE_ASM */ |
| |
| av_cold void ff_mpegvideodsp_init_x86(MpegVideoDSPContext *c) |
| { |
| #if HAVE_INLINE_ASM |
| int cpu_flags = av_get_cpu_flags(); |
| |
| if (INLINE_MMX(cpu_flags)) |
| c->gmc = gmc_mmx; |
| #endif /* HAVE_INLINE_ASM */ |
| } |
