[FFmpeg-cvslog] r14927 - trunk/libavcodec/ppc/float_altivec.c
lu_zero
subversion
Sat Aug 23 23:02:30 CEST 2008
Author: lu_zero
Date: Sat Aug 23 23:02:30 2008
New Revision: 14927
Log:
Introduce float_to_int16_one_altivec
Modified:
trunk/libavcodec/ppc/float_altivec.c
Modified: trunk/libavcodec/ppc/float_altivec.c
==============================================================================
--- trunk/libavcodec/ppc/float_altivec.c (original)
+++ trunk/libavcodec/ppc/float_altivec.c Sat Aug 23 23:02:30 2008
@@ -149,6 +149,17 @@ static void vector_fmul_add_add_altivec(
ff_vector_fmul_add_add_c(dst, src0, src1, src2, src3, len, step);
}
+
+static vector signed short
+float_to_int16_one_altivec(const float *src)
+{
+ vector float s0 = vec_ld(0, src);
+ vector float s1 = vec_ld(16, src);
+ vector signed int t0 = vec_cts(s0, 0);
+ vector signed int t1 = vec_cts(s1, 0);
+ return vec_packs(t0,t1);
+}
+
void float_to_int16_altivec(int16_t *dst, const float *src, int len)
{
int i;
@@ -158,13 +169,9 @@ void float_to_int16_altivec(int16_t *dst
vector unsigned char align;
if(((long)dst)&15) //FIXME
for(i=0; i<len-7; i+=8) {
- s0 = vec_ld(0, src+i);
- s1 = vec_ld(16, src+i);
- t0 = vec_cts(s0, 0);
d0 = vec_ld(0, dst+i);
- t1 = vec_cts(s1, 0);
+ d = float_to_int16_one_altivec(src+i);
d1 = vec_ld(15, dst+i);
- d = vec_packs(t0,t1);
d1 = vec_perm(d1, d0, vec_lvsl(0,dst+i));
align = vec_lvsr(0, dst+i);
d0 = vec_perm(d1, d, align);
@@ -174,11 +181,7 @@ void float_to_int16_altivec(int16_t *dst
}
else
for(i=0; i<len-7; i+=8) {
- s0 = vec_ld(0, src+i);
- s1 = vec_ld(16, src+i);
- t0 = vec_cts(s0, 0);
- t1 = vec_cts(s1, 0);
- d = vec_packs(t0,t1);
+ d = float_to_int16_one_altivec(src+i);
vec_st(d, 0, dst+i);
}
}
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