diff options
Diffstat (limited to 'liba52')
| -rw-r--r-- | liba52/resample_altivec.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/liba52/resample_altivec.c b/liba52/resample_altivec.c index 8768be0d72..9e32cf61ed 100644 --- a/liba52/resample_altivec.c +++ b/liba52/resample_altivec.c @@ -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; |