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Add Altivec version of vector_fmul_window.

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Patch by David Conrad %lessen42 A gmail P com%

Originally committed as revision 16459 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
David Conrad 2009-01-06 23:03:33 +00:00 committed by Guillaume Poirier
parent 8b2bc85f29
commit 4929c63679
1 changed files with 39 additions and 0 deletions
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39
libavcodec/ppc/float_altivec.c
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@ -23,6 +23,7 @@
#include "gcc_fixes.h"
#include "dsputil_altivec.h"
#include "util_altivec.h"
static void vector_fmul_altivec(float *dst, const float *src, int len)
{
@ -149,6 +150,43 @@ static void vector_fmul_add_add_altivec(float *dst, const float *src0,
ff_vector_fmul_add_add_c(dst, src0, src1, src2, src3, len, step);
}
static void vector_fmul_window_altivec(float *dst, const float *src0, const float *src1, const float *win, float add_bias, int len)
{
union {
vector float v;
float s[4];
} vadd;
vector float vadd_bias, zero, t0, t1, s0, s1, wi, wj;
const vector unsigned char reverse = vcprm(3,2,1,0);
int i,j;
dst += len;
win += len;
src0+= len;
vadd.s[0] = add_bias;
vadd_bias = vec_splat(vadd.v, 0);
zero = (vector float)vec_splat_u32(0);
for(i=-len*4, j=len*4-16; i<0; i+=16, j-=16) {
s0 = vec_ld(i, src0);
s1 = vec_ld(j, src1);
wi = vec_ld(i, win);
wj = vec_ld(j, win);
s1 = vec_perm(s1, s1, reverse);
wj = vec_perm(wj, wj, reverse);
t0 = vec_madd(s0, wj, vadd_bias);
t0 = vec_nmsub(s1, wi, t0);
t1 = vec_madd(s0, wi, vadd_bias);
t1 = vec_madd(s1, wj, t1);
t1 = vec_perm(t1, t1, reverse);
vec_st(t0, i, dst);
vec_st(t1, j, dst);
}
}
static void int32_to_float_fmul_scalar_altivec(float *dst, const int *src, float mul, int len)
{
@ -266,6 +304,7 @@ void float_init_altivec(DSPContext* c, AVCodecContext *avctx)
c->vector_fmul_add_add = vector_fmul_add_add_altivec;
c->int32_to_float_fmul_scalar = int32_to_float_fmul_scalar_altivec;
if(!(avctx->flags & CODEC_FLAG_BITEXACT)) {
c->vector_fmul_window = vector_fmul_window_altivec;
c->float_to_int16 = float_to_int16_altivec;
c->float_to_int16_interleave = float_to_int16_interleave_altivec;
}