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libavcodec/ppc/me_cmp.c : support little endian in sse8_altivec(), hadamard8_diff8x8_altivec() and hadamard8_diff16x8_altivec()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
pull/95/head
Rong Yan 10 years ago committed by Michael Niedermayer
parent bb38cb14cc
commit cfaa233962
1 changed files with 21 additions and 37 deletions
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  1. 58
      libavcodec/ppc/me_cmp.c

58
libavcodec/ppc/me_cmp.c
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@ -315,14 +315,13 @@ static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
int line_size, int h)
{
int i, s;
int i;
int __attribute__((aligned(16))) s;
const vector unsigned int zero =
(const vector unsigned int) vec_splat_u32(0);
const vector unsigned char permclear =
(vector unsigned char)
{ 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0 };
vector unsigned char perm1 = vec_lvsl(0, pix1);
vector unsigned char perm2 = vec_lvsl(0, pix2);
vector unsigned int sum = (vector unsigned int) vec_splat_u32(0);
vector signed int sumsqr;
@ -330,14 +329,8 @@ static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
/* Read potentially unaligned pixels into t1 and t2.
* Since we're reading 16 pixels, and actually only want 8,
* mask out the last 8 pixels. The 0s don't change the sum. */
vector unsigned char pix1l = vec_ld(0, pix1);
vector unsigned char pix1r = vec_ld(7, pix1);
vector unsigned char pix2l = vec_ld(0, pix2);
vector unsigned char pix2r = vec_ld(7, pix2);
vector unsigned char t1 = vec_and(vec_perm(pix1l, pix1r, perm1),
permclear);
vector unsigned char t2 = vec_and(vec_perm(pix2l, pix2r, perm2),
permclear);
vector unsigned char t1 = vec_and(VEC_LD(0, pix1), permclear);
vector unsigned char t2 = vec_and(VEC_LD(0, pix2), permclear);
/* Since we want to use unsigned chars, we can take advantage
* of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
@ -405,7 +398,7 @@ static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
uint8_t *src, int stride, int h)
{
int sum;
int __attribute__((aligned(16))) sum;
register const vector unsigned char vzero =
(const vector unsigned char) vec_splat_u8(0);
register vector signed short temp0, temp1, temp2, temp3, temp4,
@ -430,24 +423,19 @@ static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
{ 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
#define ONEITERBUTTERFLY(i, res) \
{ \
register vector unsigned char src1 = vec_ld(stride * i, src); \
register vector unsigned char src2 = vec_ld(stride * i + 15, src); \
register vector unsigned char srcO = \
vec_perm(src1, src2, vec_lvsl(stride * i, src)); \
register vector unsigned char dst1 = vec_ld(stride * i, dst); \
register vector unsigned char dst2 = vec_ld(stride * i + 15, dst); \
register vector unsigned char dstO = \
vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \
register vector unsigned char srcO = unaligned_load(stride * i, src); \
register vector unsigned char dstO = unaligned_load(stride * i, dst);\
\
/* Promote the unsigned chars to signed shorts. */ \
/* We're in the 8x8 function, we only care for the first 8. */ \
register vector signed short srcV = \
(vector signed short) vec_mergeh((vector signed char) vzero, \
(vector signed short) VEC_MERGEH((vector signed char) vzero, \
(vector signed char) srcO); \
register vector signed short dstV = \
(vector signed short) vec_mergeh((vector signed char) vzero, \
(vector signed short) VEC_MERGEH((vector signed char) vzero, \
(vector signed char) dstO); \
\
/* subtractions inside the first butterfly */ \
@ -459,6 +447,7 @@ static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
register vector signed short op3 = vec_perm(but2, but2, perm3); \
res = vec_mladd(but2, vprod3, op3); \
}
ONEITERBUTTERFLY(0, temp0);
ONEITERBUTTERFLY(1, temp1);
ONEITERBUTTERFLY(2, temp2);
@ -508,6 +497,7 @@ static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
vsum = vec_sum4s(vec_abs(line7C), vsum);
vsum = vec_sums(vsum, (vector signed int) vzero);
vsum = vec_splat(vsum, 3);
vec_ste(vsum, 0, &sum);
}
return sum;
@ -534,7 +524,7 @@ static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
uint8_t *src, int stride, int h)
{
int sum;
int __attribute__((aligned(16))) sum;
register vector signed short
temp0 __asm__ ("v0"),
temp1 __asm__ ("v1"),
@ -582,31 +572,23 @@ static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
#define ONEITERBUTTERFLY(i, res1, res2) \
{ \
register vector unsigned char src1 __asm__ ("v22") = \
vec_ld(stride * i, src); \
register vector unsigned char src2 __asm__ ("v23") = \
vec_ld(stride * i + 16, src); \
register vector unsigned char srcO __asm__ ("v22") = \
vec_perm(src1, src2, vec_lvsl(stride * i, src)); \
register vector unsigned char dst1 __asm__ ("v24") = \
vec_ld(stride * i, dst); \
register vector unsigned char dst2 __asm__ ("v25") = \
vec_ld(stride * i + 16, dst); \
unaligned_load(stride * i, src); \
register vector unsigned char dstO __asm__ ("v23") = \
vec_perm(dst1, dst2, vec_lvsl(stride * i, dst)); \
unaligned_load(stride * i, dst);\
\
/* Promote the unsigned chars to signed shorts. */ \
register vector signed short srcV __asm__ ("v24") = \
(vector signed short) vec_mergeh((vector signed char) vzero, \
(vector signed short) VEC_MERGEH((vector signed char) vzero, \
(vector signed char) srcO); \
register vector signed short dstV __asm__ ("v25") = \
(vector signed short) vec_mergeh((vector signed char) vzero, \
(vector signed short) VEC_MERGEH((vector signed char) vzero, \
(vector signed char) dstO); \
register vector signed short srcW __asm__ ("v26") = \
(vector signed short) vec_mergel((vector signed char) vzero, \
(vector signed short) VEC_MERGEL((vector signed char) vzero, \
(vector signed char) srcO); \
register vector signed short dstW __asm__ ("v27") = \
(vector signed short) vec_mergel((vector signed char) vzero, \
(vector signed short) VEC_MERGEL((vector signed char) vzero, \
(vector signed char) dstO); \
\
/* subtractions inside the first butterfly */ \
@ -637,6 +619,7 @@ static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
res1 = vec_mladd(but2, vprod3, op3); \
res2 = vec_mladd(but2S, vprod3, op3S); \
}
ONEITERBUTTERFLY(0, temp0, temp0S);
ONEITERBUTTERFLY(1, temp1, temp1S);
ONEITERBUTTERFLY(2, temp2, temp2S);
@ -723,6 +706,7 @@ static int hadamard8_diff16x8_altivec(MpegEncContext *s, uint8_t *dst,
vsum = vec_sum4s(vec_abs(line7CS), vsum);
vsum = vec_sums(vsum, (vector signed int) vzero);
vsum = vec_splat(vsum, 3);
vec_ste(vsum, 0, &sum);
}
return sum;

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