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| author | Loren Merritt <lorenm@u.washington.edu> | 2006-04-05 04:13:41 +0000 |
|---|---|---|
| committer | Loren Merritt <lorenm@u.washington.edu> | 2006-04-05 04:13:41 +0000 |
| commit | 75ca1a5f70956670e9e8af30fb5b92afa0cddadf (patch) | |
| tree | 9290df94753551eee801ab3bfb00dbeba7ab42b2 /libavcodec/i386/dsputil_mmx.c | |
| parent | 87b041e0f099e5ae2d0ba2d2ebb7c9963b26ac54 (diff) | |
| download | ffmpeg-75ca1a5f70956670e9e8af30fb5b92afa0cddadf.tar.gz | |
gmc_mmx tweaks
Originally committed as revision 5269 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/i386/dsputil_mmx.c')
| -rw-r--r-- | libavcodec/i386/dsputil_mmx.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/libavcodec/i386/dsputil_mmx.c b/libavcodec/i386/dsputil_mmx.c index c315e196eb..2bef197cea 100644 --- a/libavcodec/i386/dsputil_mmx.c +++ b/libavcodec/i386/dsputil_mmx.c @@ -2406,7 +2406,6 @@ static void just_return() { return; } 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 s = 1<<shift; const int ix = ox>>(16+shift); const int iy = oy>>(16+shift); const int oxs = ox>>4; @@ -2437,14 +2436,21 @@ static void gmc_mmx(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int o return; } + src += ix + iy*stride; if( (unsigned)ix >= width-w || (unsigned)iy >= height-h ) { - ff_emulated_edge_mc(edge_buf, src+ix+iy*stride, stride, w+1, h+1, ix, iy, width, height); + ff_emulated_edge_mc(edge_buf, src, stride, w+1, h+1, ix, iy, width, height); src = edge_buf; } - else - src += ix + iy*stride; + + 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), @@ -2456,14 +2462,6 @@ static void gmc_mmx(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int o oys - dyys + dyxs*(x+2), oys - dyys + dyxs*(x+3) }; - asm volatile( - "movd %0, %%mm6 \n\t" - "pxor %%mm7, %%mm7 \n\t" - "punpcklwd %%mm6, %%mm6 \n\t" - "punpcklwd %%mm6, %%mm6 \n\t" - :: "g"(s) - ); - for(y=0; y<h; y++){ asm volatile( "movq %0, %%mm4 \n\t" @@ -2503,10 +2501,10 @@ static void gmc_mmx(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int o "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" - "paddw %5, %%mm0 \n\t" "psrlw %6, %%mm0 \n\t" "packuswb %%mm0, %%mm0 \n\t" |