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author | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-12-23 17:52:27 +0000 |
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committer | michael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2> | 2001-12-23 17:52:27 +0000 |
commit | 17fe8edd9b899b93a4bfbfc844697f44493daf9f (patch) | |
tree | 49093a288d3c2a47a1ee846532f2eb3599214395 /liba52 | |
parent | e45a5b59f881edbbfca36ecb1aebcd1a00f63ac7 (diff) | |
download | mpv-17fe8edd9b899b93a4bfbfc844697f44493daf9f.tar.bz2 mpv-17fe8edd9b899b93a4bfbfc844697f44493daf9f.tar.xz |
mix3to1 in SSE
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3680 b3059339-0415-0410-9bf9-f77b7e298cf2
Diffstat (limited to 'liba52')
-rw-r--r-- | liba52/downmix.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/liba52/downmix.c b/liba52/downmix.c index 4cb3634728..be004b99a3 100644 --- a/liba52/downmix.c +++ b/liba52/downmix.c @@ -334,15 +334,34 @@ static void mix3to1 (sample_t * samples, sample_t bias) { int i; +#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 (%0, %%esi), %%xmm0 \n\t" + "movaps 1024(%0, %%esi), %%xmm1 \n\t" + "addps 2048(%0, %%esi), %%xmm0 \n\t" + "addps %%xmm7, %%xmm1 \n\t" + "addps %%xmm1, %%xmm0 \n\t" + "movaps %%xmm0, (%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++) samples[i] += samples[i + 256] + samples[i + 512] + bias; +#endif } static void mix4to1 (sample_t * samples, sample_t bias) { int i; -#ifdef HAVE_SSE // FIXME untested +#ifdef HAVE_SSE asm volatile( "movlps %1, %%xmm7 \n\t" "shufps $0x00, %%xmm7, %%xmm7 \n\t" |