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| author | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-12-19 18:58:05 +0000 |
|---|---|---|
| committer | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-12-19 18:58:05 +0000 |
| commit | 45d18020724a8b73962d3e7a27ddc92c80d971ab (patch) | |
| tree | efc38ab68145df2f74b81fa7701c374ae3a21366 /liba52 | |
| parent | 2df107904356d6ceae8b9ff9ba137f48878bd4bb (diff) | |
| download | mpv-45d18020724a8b73962d3e7a27ddc92c80d971ab.tar.bz2 mpv-45d18020724a8b73962d3e7a27ddc92c80d971ab.tar.xz | |
sse opt of mix32to2()
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3625 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'liba52')
| -rw-r--r-- | liba52/downmix.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/liba52/downmix.c b/liba52/downmix.c index 8010cd4c61..e2bcd87781 100644 --- a/liba52/downmix.c +++ b/liba52/downmix.c @@ -411,11 +411,33 @@ static void mix32to2 (sample_t * samples, sample_t bias) int i; sample_t common; +#ifdef HAVE_SSE + asm volatile( + "movlps %1, %%xmm7 \n\t" + "shufps $0x00, %%xmm7, %%xmm7 \n\t" + "movl $-1024, %%esi \n\t" + "1: \n\t" + "movaps 1024(%0, %%esi), %%xmm0 \n\t" + "addps %%xmm7, %%xmm0 \n\t" // common + "movaps %%xmm0, %%xmm1 \n\t" // common + "addps (%0, %%esi), %%xmm0 \n\t" + "addps 2048(%0, %%esi), %%xmm1 \n\t" + "addps 3072(%0, %%esi), %%xmm0 \n\t" + "addps 4096(%0, %%esi), %%xmm1 \n\t" + "movaps %%xmm0, (%0, %%esi) \n\t" + "movaps %%xmm1, 1024(%0, %%esi) \n\t" + "addl $16, %%esi \n\t" + " jnz 1b \n\t" + :: "r" (samples+256), "m" (bias) + : "%esi" + ); +#else for (i = 0; i < 256; i++) { common = samples[i + 256] + bias; samples[i] += common + samples[i + 768]; samples[i + 256] = common + samples[i + 512] + samples[i + 1024]; } +#endif } static void mix32toS (sample_t * samples, sample_t bias) |