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161 lines
6.1 KiB
C
161 lines
6.1 KiB
C
/*
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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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