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libswscale/ppc/swscale_altivec.c : fix hScale_altivec_real() yuv2planeX_16_altivec() yuv2planeX_8() for little endian 

add marcos GET_LS() GET_VF() LOAD_FILTER() LOAD_L1() GET_VF4() FIRST_LOAD() UPDATE_PTR() LOAD_SRCV() LOAD_SRCV8() GET_VFD() for POWER LE

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
tags/n2.5
Rong Yan Michael Niedermayer 11 years ago
parent
1f4bce894a
commit
e74e14608f
1 changed files with 140 additions and 94 deletions
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  1. +140
    -94
      libswscale/ppc/swscale_altivec.c

+ 140
- 94
libswscale/ppc/swscale_altivec.c View File

@@ -29,22 +29,62 @@
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "yuv2rgb_altivec.h"
#include "libavutil/ppc/util_altivec.h"

#if HAVE_ALTIVEC
#define vzero vec_splat_s32(0)

#define yuv2planeX_8(d1, d2, l1, src, x, perm, filter) do { \
vector signed short l2 = vec_ld(((x) << 1) + 16, src); \
vector signed short ls = vec_perm(l1, l2, perm); \
vector signed int i1 = vec_mule(filter, ls); \
vector signed int i2 = vec_mulo(filter, ls); \
vector signed int vf1 = vec_mergeh(i1, i2); \
vector signed int vf2 = vec_mergel(i1, i2); \
d1 = vec_add(d1, vf1); \
d2 = vec_add(d2, vf2); \
l1 = l2; \
#if HAVE_BIGENDIAN
#define GET_LS(a,b,c,s) {\
vector signed short l2 = vec_ld(((b) << 1) + 16, s);\
ls = vec_perm(a, l2, c);\
a = l2;\
}
#define GET_VF(a, b, c,d) {\
a = vec_mergeh(c, d);\
b = vec_mergel(c, d);\
}
#else
#define GET_LS(a,b,c,s) {\
ls = a;\
a = vec_vsx_ld(((b) << 1) + 16, s);\
}
#define GET_VF(a, b, c, d) {\
a = vec_mergel(d, c);\
b = vec_mergeh(d, c);\
}
#endif

#define yuv2planeX_8(d1, d2, l1, src, x, perm, filter) do {\
vector signed short ls;\
GET_LS(l1, x, perm, src);\
vector signed int i1 = vec_mule(filter, ls);\
vector signed int i2 = vec_mulo(filter, ls);\
vector signed int vf1, vf2;\
GET_VF(vf1, vf2, i1, i2);\
d1 = vec_add(d1, vf1);\
d2 = vec_add(d2, vf2);\
} while (0)

#if HAVE_BIGENDIAN
#define LOAD_FILTER(vf,f) {\
vector unsigned char perm0 = vec_lvsl(joffset, f);\
vf = vec_ld(joffset, f);\
vf = vec_perm(vf, vf, perm0);\
}
#define LOAD_L1(ll1,s,p){\
p = vec_lvsl(xoffset, s);\
ll1 = vec_ld(xoffset, s);\
}
#else
#define LOAD_FILTER(vf,f) {\
vf = vec_vsx_ld(joffset, f);\
}
#define LOAD_L1(ll1,s,p){\
ll1 = vec_vsx_ld(xoffset, s);\
}
#endif

static void yuv2planeX_16_altivec(const int16_t *filter, int filterSize,
const int16_t **src, uint8_t *dest,
const uint8_t *dither, int offset, int x)
@@ -66,14 +106,13 @@ static void yuv2planeX_16_altivec(const int16_t *filter, int filterSize,
vo4 = vec_ld(48, val);

for (j = 0; j < filterSize; j++) {
vector signed short l1, vLumFilter = vec_ld(j << 1, filter);
vector unsigned char perm, perm0 = vec_lvsl(j << 1, filter);
vLumFilter = vec_perm(vLumFilter, vLumFilter, perm0);
vLumFilter = vec_splat(vLumFilter, 0); // lumFilter[j] is loaded 8 times in vLumFilter

perm = vec_lvsl(x << 1, src[j]);
l1 = vec_ld(x << 1, src[j]);

unsigned int joffset=j<<1;
unsigned int xoffset=x<<1;
vector unsigned char perm;
vector signed short l1,vLumFilter;
LOAD_FILTER(vLumFilter,filter);
vLumFilter = vec_splat(vLumFilter, 0);
LOAD_L1(l1,src[j],perm);
yuv2planeX_8(vo1, vo2, l1, src[j], x, perm, vLumFilter);
yuv2planeX_8(vo3, vo4, l1, src[j], x + 8, perm, vLumFilter);
}
@@ -85,9 +124,10 @@ static void yuv2planeX_16_altivec(const int16_t *filter, int filterSize,
vs1 = vec_packsu(vo1, vo2);
vs2 = vec_packsu(vo3, vo4);
vf = vec_packsu(vs1, vs2);
vec_st(vf, 0, dest);
VEC_ST(vf, 0, dest);
}


static inline void yuv2planeX_u(const int16_t *filter, int filterSize,
const int16_t **src, uint8_t *dest, int dstW,
const uint8_t *dither, int offset, int x)
@@ -118,6 +158,58 @@ static void yuv2planeX_altivec(const int16_t *filter, int filterSize,
yuv2planeX_u(filter, filterSize, src, dest, dstW, dither, offset, i);
}

#if HAVE_BIGENDIAN
// The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2).

// The neat trick: We only care for half the elements,
// high or low depending on (i<<3)%16 (it's 0 or 8 here),
// and we're going to use vec_mule, so we choose
// carefully how to "unpack" the elements into the even slots.
#define GET_VF4(a, vf, f) {\
vf = vec_ld(a<< 3, f);\
if ((a << 3) % 16)\
vf = vec_mergel(vf, (vector signed short)vzero);\
else\
vf = vec_mergeh(vf, (vector signed short)vzero);\
}
#define FIRST_LOAD(sv, pos, s, per) {\
sv = vec_ld(pos, s);\
per = vec_lvsl(pos, s);\
}
#define UPDATE_PTR(s0, d0, s1, d1) {\
d0 = s0;\
d1 = s1;\
}
#define LOAD_SRCV(pos, a, s, per, v0, v1, vf) {\
v1 = vec_ld(pos + a + 16, s);\
vf = vec_perm(v0, v1, per);\
}
#define LOAD_SRCV8(pos, a, s, per, v0, v1, vf) {\
if ((((uintptr_t)s + pos) % 16) > 8) {\
v1 = vec_ld(pos + a + 16, s);\
}\
vf = vec_perm(v0, src_v1, per);\
}
#define GET_VFD(a, b, f, vf0, vf1, per, vf, off) {\
vf1 = vec_ld((a * 2 * filterSize) + (b * 2) + 16 + off, f);\
vf = vec_perm(vf0, vf1, per);\
}
#else /* else of #if HAVE_BIGENDIAN */
#define GET_VF4(a, vf, f) {\
vf = (vector signed short)vec_vsx_ld(a << 3, f);\
vf = vec_mergeh(vf, (vector signed short)vzero);\
}
#define FIRST_LOAD(sv, pos, s, per) {}
#define UPDATE_PTR(s0, d0, s1, d1) {}
#define LOAD_SRCV(pos, a, s, per, v0, v1, vf) {\
vf = vec_vsx_ld(pos + a, s);\
}
#define LOAD_SRCV8(pos, a, s, per, v0, v1, vf) LOAD_SRCV(pos, a, s, per, v0, v1, vf)
#define GET_VFD(a, b, f, vf0, vf1, per, vf, off) {\
vf = vec_vsx_ld((a * 2 * filterSize) + (b * 2) + off, f);\
}
#endif /* end of #if HAVE_BIGENDIAN */

static void hScale_altivec_real(SwsContext *c, int16_t *dst, int dstW,
const uint8_t *src, const int16_t *filter,
const int32_t *filterPos, int filterSize)
@@ -140,57 +232,32 @@ static void hScale_altivec_real(SwsContext *c, int16_t *dst, int dstW,
for (i = 0; i < dstW; i++) {
register int srcPos = filterPos[i];

vector unsigned char src_v0 = vec_ld(srcPos, src);
vector unsigned char src_v1, src_vF;
vector unsigned char src_vF = unaligned_load(srcPos, src);
vector signed short src_v, filter_v;
vector signed int val_vEven, val_s;
if ((((uintptr_t)src + srcPos) % 16) > 12) {
src_v1 = vec_ld(srcPos + 16, src);
}
src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));

src_v = // vec_unpackh sign-extends...
(vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
(vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF));
// now put our elements in the even slots
src_v = vec_mergeh(src_v, (vector signed short)vzero);

filter_v = vec_ld(i << 3, filter);
// The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2).

// The neat trick: We only care for half the elements,
// high or low depending on (i<<3)%16 (it's 0 or 8 here),
// and we're going to use vec_mule, so we choose
// carefully how to "unpack" the elements into the even slots.
if ((i << 3) % 16)
filter_v = vec_mergel(filter_v, (vector signed short)vzero);
else
filter_v = vec_mergeh(filter_v, (vector signed short)vzero);

GET_VF4(i, filter_v, filter);
val_vEven = vec_mule(src_v, filter_v);
val_s = vec_sums(val_vEven, vzero);
vec_st(val_s, 0, tempo);
dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1);
}
break;

case 8:
for (i = 0; i < dstW; i++) {
register int srcPos = filterPos[i];

vector unsigned char src_v0 = vec_ld(srcPos, src);
vector unsigned char src_v1, src_vF;
vector unsigned char src_vF, src_v0, src_v1;
vector unsigned char permS;
vector signed short src_v, filter_v;
vector signed int val_v, val_s;
if ((((uintptr_t)src + srcPos) % 16) > 8) {
src_v1 = vec_ld(srcPos + 16, src);
}
src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));

FIRST_LOAD(src_v0, srcPos, src, permS);
LOAD_SRCV8(srcPos, 0, src, permS, src_v0, src_v1, src_vF);
src_v = // vec_unpackh sign-extends...
(vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
(vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF));
filter_v = vec_ld(i << 4, filter);
// the 4 above is 3 (filterSize == 8) + 1 (sizeof(short) == 2)

val_v = vec_msums(src_v, filter_v, (vector signed int)vzero);
val_s = vec_sums(val_v, vzero);
vec_st(val_s, 0, tempo);
@@ -202,85 +269,64 @@ static void hScale_altivec_real(SwsContext *c, int16_t *dst, int dstW,
for (i = 0; i < dstW; i++) {
register int srcPos = filterPos[i];

vector unsigned char src_v0 = vec_ld(srcPos, src);
vector unsigned char src_v1 = vec_ld(srcPos + 16, src);
vector unsigned char src_vF = vec_perm(src_v0, src_v1, vec_lvsl(srcPos, src));

vector unsigned char src_vF = unaligned_load(srcPos, src);
vector signed short src_vA = // vec_unpackh sign-extends...
(vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
(vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF));
vector signed short src_vB = // vec_unpackh sign-extends...
(vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));

(vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF));
vector signed short filter_v0 = vec_ld(i << 5, filter);
vector signed short filter_v1 = vec_ld((i << 5) + 16, filter);
// the 5 above are 4 (filterSize == 16) + 1 (sizeof(short) == 2)

vector signed int val_acc = vec_msums(src_vA, filter_v0, (vector signed int)vzero);
vector signed int val_v = vec_msums(src_vB, filter_v1, val_acc);

vector signed int val_s = vec_sums(val_v, vzero);

vec_st(val_s, 0, tempo);
VEC_ST(val_s, 0, tempo);
dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1);
}
break;

default:
for (i = 0; i < dstW; i++) {
register int j;
register int j, offset = i * 2 * filterSize;
register int srcPos = filterPos[i];

vector signed int val_s, val_v = (vector signed int)vzero;
vector signed short filter_v0R = vec_ld(i * 2 * filterSize, filter);
vector unsigned char permF = vec_lvsl((i * 2 * filterSize), filter);

vector unsigned char src_v0 = vec_ld(srcPos, src);
vector unsigned char permS = vec_lvsl(srcPos, src);
vector signed short filter_v0R;
vector unsigned char permF, src_v0, permS;
FIRST_LOAD(filter_v0R, offset, filter, permF);
FIRST_LOAD(src_v0, srcPos, src, permS);

for (j = 0; j < filterSize - 15; j += 16) {
vector unsigned char src_v1 = vec_ld(srcPos + j + 16, src);
vector unsigned char src_vF = vec_perm(src_v0, src_v1, permS);
vector unsigned char src_v1, src_vF;
vector signed short filter_v1R, filter_v2R, filter_v0, filter_v1;
LOAD_SRCV(srcPos, j, src, permS, src_v0, src_v1, src_vF);
vector signed short src_vA = // vec_unpackh sign-extends...
(vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
(vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF));
vector signed short src_vB = // vec_unpackh sign-extends...
(vector signed short)(vec_mergel((vector unsigned char)vzero, src_vF));

vector signed short filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
vector signed short filter_v2R = vec_ld((i * 2 * filterSize) + (j * 2) + 32, filter);
vector signed short filter_v0 = vec_perm(filter_v0R, filter_v1R, permF);
vector signed short filter_v1 = vec_perm(filter_v1R, filter_v2R, permF);
(vector signed short)(VEC_MERGEL((vector unsigned char)vzero, src_vF));
GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v0, 0);
GET_VFD(i, j, filter, filter_v1R, filter_v2R, permF, filter_v1, 16);

vector signed int val_acc = vec_msums(src_vA, filter_v0, val_v);
val_v = vec_msums(src_vB, filter_v1, val_acc);

filter_v0R = filter_v2R;
src_v0 = src_v1;
UPDATE_PTR(filter_v2R, filter_v0R, src_v1, src_v0);
}

if (j < filterSize - 7) {
// loading src_v0 is useless, it's already done above
// vector unsigned char src_v0 = vec_ld(srcPos + j, src);
vector unsigned char src_v1, src_vF;
vector signed short src_v, filter_v1R, filter_v;
if ((((uintptr_t)src + srcPos) % 16) > 8) {
src_v1 = vec_ld(srcPos + j + 16, src);
}
src_vF = vec_perm(src_v0, src_v1, permS);

LOAD_SRCV8(srcPos, j, src, permS, src_v0, src_v1, src_vF);
src_v = // vec_unpackh sign-extends...
(vector signed short)(vec_mergeh((vector unsigned char)vzero, src_vF));
// loading filter_v0R is useless, it's already done above
// vector signed short filter_v0R = vec_ld((i * 2 * filterSize) + j, filter);
filter_v1R = vec_ld((i * 2 * filterSize) + (j * 2) + 16, filter);
filter_v = vec_perm(filter_v0R, filter_v1R, permF);

(vector signed short)(VEC_MERGEH((vector unsigned char)vzero, src_vF));
GET_VFD(i, j, filter, filter_v0R, filter_v1R, permF, filter_v, 0);
val_v = vec_msums(src_v, filter_v, val_v);
}

val_s = vec_sums(val_v, vzero);

vec_st(val_s, 0, tempo);
VEC_ST(val_s, 0, tempo);
dst[i] = FFMIN(tempo[3] >> 7, (1 << 15) - 1);
}
}


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