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unaligned store, should fix bug #893

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git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@25024 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
lu_zero 2007-11-11 20:58:02 +00:00
parent 5480a12264
commit a74197b43f
1 changed files with 18 additions and 3 deletions
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21
liba52/resample_altivec.c
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@ -17,6 +17,21 @@ static inline vector signed short convert16_altivec(vector signed int v1, vector
return result;
}
static void unaligned_store(vector signed short value, int off, int16_t *dst)
{
register vector unsigned char align = vec_lvsr(0, dst),
mask = vec_lvsl(0, dst);
register vector signed short t0,t1, edges;
t0 = vec_ld(0+off, dst);
t1 = vec_ld(15+off, dst);
edges = vec_perm(t1 ,t0, mask);
t1 = vec_perm(value, edges, align);
t0 = vec_perm(edges, value, align);
vec_st(t1, 15+off, dst);
vec_st(t0, 0+off, dst);
}
static int a52_resample_STEREO_to_2_altivec(float * _f, int16_t * s16){
#if 0
int i;
@ -44,9 +59,9 @@ static int a52_resample_STEREO_to_2_altivec(float * _f, int16_t * s16){
r0 = vec_mergeh(reven, rodd);
r1 = vec_mergel(reven, rodd);
vec_st(r0, 0, s16);
vec_st(r1, 16, s16);
// FIXME can be merged to spare some I/O
unaligned_store(r0, 0, s16);
unaligned_store(r1, 16, s16);
f += 8;
s16 += 16;