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authormichael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2>2001-12-23 17:52:27 +0000
committermichael <michael@b3059339-0415-0410-9bf9-f77b7e298cf2>2001-12-23 17:52:27 +0000
commit17fe8edd9b899b93a4bfbfc844697f44493daf9f (patch)
tree49093a288d3c2a47a1ee846532f2eb3599214395 /liba52
parente45a5b59f881edbbfca36ecb1aebcd1a00f63ac7 (diff)
downloadmpv-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.c21
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"