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161 lines
6.1 KiB
161 lines
6.1 KiB
/* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "config.h" |
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#include "libavutil/attributes.h" |
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#include "libavutil/cpu.h" |
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#include "libavutil/x86/cpu.h" |
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#include "libavcodec/mpegvideodsp.h" |
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#include "libavcodec/videodsp.h" |
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#if HAVE_INLINE_ASM |
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static void gmc_mmx(uint8_t *dst, uint8_t *src, |
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int stride, int h, int ox, int oy, |
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int dxx, int dxy, int dyx, int dyy, |
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int shift, int r, int width, int height) |
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{ |
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const int w = 8; |
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const int ix = ox >> (16 + shift); |
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const int iy = oy >> (16 + shift); |
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const int oxs = ox >> 4; |
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const int oys = oy >> 4; |
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const int dxxs = dxx >> 4; |
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const int dxys = dxy >> 4; |
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const int dyxs = dyx >> 4; |
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const int dyys = dyy >> 4; |
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const uint16_t r4[4] = { r, r, r, r }; |
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const uint16_t dxy4[4] = { dxys, dxys, dxys, dxys }; |
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const uint16_t dyy4[4] = { dyys, dyys, dyys, dyys }; |
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const uint64_t shift2 = 2 * shift; |
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#define MAX_STRIDE 4096U |
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#define MAX_H 8U |
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uint8_t edge_buf[(MAX_H + 1) * MAX_STRIDE]; |
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int x, y; |
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const int dxw = (dxx - (1 << (16 + shift))) * (w - 1); |
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const int dyh = (dyy - (1 << (16 + shift))) * (h - 1); |
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const int dxh = dxy * (h - 1); |
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const int dyw = dyx * (w - 1); |
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int need_emu = (unsigned) ix >= width - w || width < w || |
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(unsigned) iy >= height - h || height< h |
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; |
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if ( // non-constant fullpel offset (3% of blocks) |
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((ox ^ (ox + dxw)) | (ox ^ (ox + dxh)) | (ox ^ (ox + dxw + dxh)) | |
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(oy ^ (oy + dyw)) | (oy ^ (oy + dyh)) | (oy ^ (oy + dyw + dyh))) >> (16 + shift) || |
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// uses more than 16 bits of subpel mv (only at huge resolution) |
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(dxx | dxy | dyx | dyy) & 15 || |
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(need_emu && (h > MAX_H || stride > MAX_STRIDE))) { |
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// FIXME could still use mmx for some of the rows |
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ff_gmc_c(dst, src, stride, h, ox, oy, dxx, dxy, dyx, dyy, |
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shift, r, width, height); |
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return; |
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} |
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src += ix + iy * stride; |
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if (need_emu) { |
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ff_emulated_edge_mc_8(edge_buf, src, stride, stride, w + 1, h + 1, ix, iy, width, height); |
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src = edge_buf; |
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} |
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__asm__ volatile ( |
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"movd %0, %%mm6 \n\t" |
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"pxor %%mm7, %%mm7 \n\t" |
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"punpcklwd %%mm6, %%mm6 \n\t" |
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"punpcklwd %%mm6, %%mm6 \n\t" |
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:: "r" (1 << shift)); |
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for (x = 0; x < w; x += 4) { |
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uint16_t dx4[4] = { oxs - dxys + dxxs * (x + 0), |
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oxs - dxys + dxxs * (x + 1), |
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oxs - dxys + dxxs * (x + 2), |
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oxs - dxys + dxxs * (x + 3) }; |
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uint16_t dy4[4] = { oys - dyys + dyxs * (x + 0), |
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oys - dyys + dyxs * (x + 1), |
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oys - dyys + dyxs * (x + 2), |
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oys - dyys + dyxs * (x + 3) }; |
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for (y = 0; y < h; y++) { |
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__asm__ volatile ( |
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"movq %0, %%mm4 \n\t" |
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"movq %1, %%mm5 \n\t" |
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"paddw %2, %%mm4 \n\t" |
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"paddw %3, %%mm5 \n\t" |
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"movq %%mm4, %0 \n\t" |
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"movq %%mm5, %1 \n\t" |
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"psrlw $12, %%mm4 \n\t" |
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"psrlw $12, %%mm5 \n\t" |
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: "+m" (*dx4), "+m" (*dy4) |
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: "m" (*dxy4), "m" (*dyy4)); |
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__asm__ volatile ( |
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"movq %%mm6, %%mm2 \n\t" |
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"movq %%mm6, %%mm1 \n\t" |
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"psubw %%mm4, %%mm2 \n\t" |
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"psubw %%mm5, %%mm1 \n\t" |
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"movq %%mm2, %%mm0 \n\t" |
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"movq %%mm4, %%mm3 \n\t" |
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"pmullw %%mm1, %%mm0 \n\t" // (s - dx) * (s - dy) |
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"pmullw %%mm5, %%mm3 \n\t" // dx * dy |
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"pmullw %%mm5, %%mm2 \n\t" // (s - dx) * dy |
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"pmullw %%mm4, %%mm1 \n\t" // dx * (s - dy) |
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"movd %4, %%mm5 \n\t" |
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"movd %3, %%mm4 \n\t" |
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"punpcklbw %%mm7, %%mm5 \n\t" |
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"punpcklbw %%mm7, %%mm4 \n\t" |
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"pmullw %%mm5, %%mm3 \n\t" // src[1, 1] * dx * dy |
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"pmullw %%mm4, %%mm2 \n\t" // src[0, 1] * (s - dx) * dy |
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"movd %2, %%mm5 \n\t" |
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"movd %1, %%mm4 \n\t" |
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"punpcklbw %%mm7, %%mm5 \n\t" |
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"punpcklbw %%mm7, %%mm4 \n\t" |
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"pmullw %%mm5, %%mm1 \n\t" // src[1, 0] * dx * (s - dy) |
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"pmullw %%mm4, %%mm0 \n\t" // src[0, 0] * (s - dx) * (s - dy) |
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"paddw %5, %%mm1 \n\t" |
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"paddw %%mm3, %%mm2 \n\t" |
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"paddw %%mm1, %%mm0 \n\t" |
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"paddw %%mm2, %%mm0 \n\t" |
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"psrlw %6, %%mm0 \n\t" |
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"packuswb %%mm0, %%mm0 \n\t" |
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"movd %%mm0, %0 \n\t" |
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: "=m" (dst[x + y * stride]) |
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: "m" (src[0]), "m" (src[1]), |
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"m" (src[stride]), "m" (src[stride + 1]), |
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"m" (*r4), "m" (shift2)); |
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src += stride; |
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} |
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src += 4 - h * stride; |
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} |
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} |
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#endif /* HAVE_INLINE_ASM */ |
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av_cold void ff_mpegvideodsp_init_x86(MpegVideoDSPContext *c) |
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{ |
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#if HAVE_INLINE_ASM |
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int cpu_flags = av_get_cpu_flags(); |
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if (INLINE_MMX(cpu_flags)) |
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c->gmc = gmc_mmx; |
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#endif /* HAVE_INLINE_ASM */ |
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}
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