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libavcodec/ppc/mpegvideoencdsp.c : fix pix_norm1_altivec() and pix_sum_altivec() for POWER LE

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Rong Yan 2014-10-10 08:27:16 +00:00 committed by Michael Niedermayer
parent 31dea05170
commit c5ca76ad3b
1 changed files with 60 additions and 0 deletions
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60
libavcodec/ppc/mpegvideoencdsp.c
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@ -31,6 +31,34 @@
#if HAVE_ALTIVEC
#if HAVE_VSX
static int pix_norm1_altivec(uint8_t *pix, int line_size)
{
int i, s = 0;
const vector unsigned int zero =
(const vector unsigned int) vec_splat_u32(0);
vector unsigned int sv = (vector unsigned int) vec_splat_u32(0);
vector signed int sum;
for (i = 0; i < 16; i++) {
/* Read the potentially unaligned pixels. */
//vector unsigned char pixl = vec_ld(0, pix);
//vector unsigned char pixr = vec_ld(15, pix);
//vector unsigned char pixv = vec_perm(pixl, pixr, perm);
vector unsigned char pixv = vec_vsx_ld(0, pix);
/* Square the values, and add them to our sum. */
sv = vec_msum(pixv, pixv, sv);
pix += line_size;
}
/* Sum up the four partial sums, and put the result into s. */
sum = vec_sums((vector signed int) sv, (vector signed int) zero);
sum = vec_splat(sum, 3);
vec_vsx_st(sum, 0, &s);
return s;
}
#else
static int pix_norm1_altivec(uint8_t *pix, int line_size)
{
int i, s = 0;
@ -58,7 +86,37 @@ static int pix_norm1_altivec(uint8_t *pix, int line_size)
return s;
}
#endif /* HAVE_VSX */
#if HAVE_VSX
static int pix_sum_altivec(uint8_t *pix, int line_size)
{
int i, s;
const vector unsigned int zero =
(const vector unsigned int) vec_splat_u32(0);
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
vector signed int sumdiffs;
for (i = 0; i < 16; i++) {
/* Read the potentially unaligned 16 pixels into t1. */
//vector unsigned char pixl = vec_ld(0, pix);
//vector unsigned char pixr = vec_ld(15, pix);
//vector unsigned char t1 = vec_perm(pixl, pixr, perm);
vector unsigned char t1 = vec_vsx_ld(0, pix);
/* Add each 4 pixel group together and put 4 results into sad. */
sad = vec_sum4s(t1, sad);
pix += line_size;
}
/* Sum up the four partial sums, and put the result into s. */
sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
sumdiffs = vec_splat(sumdiffs, 3);
vec_vsx_st(sumdiffs, 0, &s);
return s;
}
#else
static int pix_sum_altivec(uint8_t *pix, int line_size)
{
int i, s;
@ -88,6 +146,8 @@ static int pix_sum_altivec(uint8_t *pix, int line_size)
return s;
}
#endif /* HAVE_VSX */
#endif /* HAVE_ALTIVEC */
av_cold void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c,