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libavcodec/ppc/hpeldsp_altivec.c : fix ff_put_pixels16_altivec() for POWER LE 

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Rong Yan 2014-10-10 08:29:58 +00:00 committed by Michael Niedermayer
parent c1fa5d1bd4
commit 0d71bd5a94
1 changed files with 34 additions and 0 deletions
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34
libavcodec/ppc/hpeldsp_altivec.c
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@ -36,6 +36,38 @@
#if HAVE_ALTIVEC #if HAVE_ALTIVEC
/* next one assumes that ((line_size % 16) == 0) */ /* next one assumes that ((line_size % 16) == 0) */
#if HAVE_VSX
void ff_put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{
register vector unsigned char pixelsv1;
register vector unsigned char pixelsv1B;
register vector unsigned char pixelsv1C;
register vector unsigned char pixelsv1D;
int i;
register ptrdiff_t line_size_2 = line_size << 1;
register ptrdiff_t line_size_3 = line_size + line_size_2;
register ptrdiff_t line_size_4 = line_size << 2;
// hand-unrolling the loop by 4 gains about 15%
// mininum execution time goes from 74 to 60 cycles
// it's faster than -funroll-loops, but using
// -funroll-loops w/ this is bad - 74 cycles again.
// all this is on a 7450, tuning for the 7450
for (i = 0; i < h; i += 4) {
pixelsv1 = vec_vsx_ld( 0, pixels);
pixelsv1B = vec_vsx_ld(line_size, pixels);
pixelsv1C = vec_vsx_ld(line_size_2, pixels);
pixelsv1D = vec_vsx_ld(line_size_3, pixels);
vec_vsx_st(pixelsv1, 0, (unsigned char*)block);
vec_vsx_st(pixelsv1B, line_size, (unsigned char*)block);
vec_vsx_st(pixelsv1C, line_size_2, (unsigned char*)block);
vec_st(pixelsv1D, line_size_3, (unsigned char*)block);
pixels+=line_size_4;
block +=line_size_4;
}
}
#else
void ff_put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h) void ff_put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{ {
register vector unsigned char pixelsv1, pixelsv2; register vector unsigned char pixelsv1, pixelsv2;
@ -76,6 +108,8 @@ void ff_put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t li
} }
} }
#endif /* HAVE_VSX */
/* next one assumes that ((line_size % 16) == 0) */ /* next one assumes that ((line_size % 16) == 0) */
#define op_avg(a,b) a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) ) #define op_avg(a,b) a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) )
void ff_avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h) void ff_avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)