mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
libavcodec/ppc/me_cmp.c : fix sad16_altivec() sse16_altivec() sad16_xy2_altivec() sad16_x2_altivec() sad16_y2_altivec() sad8_altivec() for POWER LE
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Rong Yan
Michael Niedermayer
parent
162b521108
commit
c1fa5d1bd4
@ -35,6 +35,44 @@
|
||||
#include "libavcodec/me_cmp.h"
|
||||
|
||||
#if HAVE_ALTIVEC
|
||||
#if HAVE_VSX
|
||||
static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
int i, s = 0;
|
||||
const vector unsigned char zero =
|
||||
(const vector unsigned char) vec_splat_u8(0);
|
||||
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
|
||||
vector signed int sumdiffs;
|
||||
|
||||
for (i = 0; i < h; i++) {
|
||||
/* Read unaligned pixels into our vectors. The vectors are as follows:
|
||||
* pix1v: pix1[0] - pix1[15]
|
||||
* pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16] */
|
||||
vector unsigned char pix1v = vec_vsx_ld(0, pix1);
|
||||
vector unsigned char pix2v = vec_vsx_ld(0, pix2);
|
||||
vector unsigned char pix2iv = vec_vsx_ld(1, pix2);
|
||||
|
||||
/* Calculate the average vector. */
|
||||
vector unsigned char avgv = vec_avg(pix2v, pix2iv);
|
||||
|
||||
/* Calculate a sum of abs differences vector. */
|
||||
vector unsigned char t5 = vec_sub(vec_max(pix1v, avgv),
|
||||
vec_min(pix1v, avgv));
|
||||
|
||||
/* Add each 4 pixel group together and put 4 results into sad. */
|
||||
sad = vec_sum4s(t5, sad);
|
||||
|
||||
pix1 += line_size;
|
||||
pix2 += 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 sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -76,7 +114,58 @@ static int sad16_x2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
#if HAVE_VSX
|
||||
static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
int i, s = 0;
|
||||
const vector unsigned char zero =
|
||||
(const vector unsigned char) vec_splat_u8(0);
|
||||
vector unsigned char perm = vec_lvsl(0, pix2);
|
||||
vector unsigned char pix1v, pix3v, avgv, t5;
|
||||
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
|
||||
vector signed int sumdiffs;
|
||||
uint8_t *pix3 = pix2 + line_size;
|
||||
|
||||
/* Due to the fact that pix3 = pix2 + line_size, the pix3 of one
|
||||
* iteration becomes pix2 in the next iteration. We can use this
|
||||
* fact to avoid a potentially expensive unaligned read, each
|
||||
* time around the loop.
|
||||
* Read unaligned pixels into our vectors. The vectors are as follows:
|
||||
* pix2v: pix2[0] - pix2[15]
|
||||
* Split the pixel vectors into shorts. */
|
||||
vector unsigned char pix2v = vec_vsx_ld(0, pix2);
|
||||
|
||||
for (i = 0; i < h; i++) {
|
||||
/* Read unaligned pixels into our vectors. The vectors are as follows:
|
||||
* pix1v: pix1[0] - pix1[15]
|
||||
* pix3v: pix3[0] - pix3[15] */
|
||||
pix1v = vec_vsx_ld(0, pix1);
|
||||
pix3v = vec_vsx_ld(0, pix3);
|
||||
|
||||
/* Calculate the average vector. */
|
||||
avgv = vec_avg(pix2v, pix3v);
|
||||
|
||||
/* Calculate a sum of abs differences vector. */
|
||||
t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
|
||||
|
||||
/* Add each 4 pixel group together and put 4 results into sad. */
|
||||
sad = vec_sum4s(t5, sad);
|
||||
|
||||
pix1 += line_size;
|
||||
pix2v = pix3v;
|
||||
pix3 += 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 sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -130,7 +219,96 @@ static int sad16_y2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
vec_ste(sumdiffs, 0, &s);
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
#if HAVE_VSX
|
||||
static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
int i, s = 0;
|
||||
uint8_t *pix3 = pix2 + line_size;
|
||||
const vector unsigned char zero =
|
||||
(const vector unsigned char) vec_splat_u8(0);
|
||||
const vector unsigned short two =
|
||||
(const vector unsigned short) vec_splat_u16(2);
|
||||
vector unsigned char avgv, t5;
|
||||
vector unsigned char pix1v, pix3v, pix3iv;
|
||||
vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;
|
||||
vector unsigned short avghv, avglv;
|
||||
vector unsigned int sad = (vector unsigned int) vec_splat_u32(0);
|
||||
vector signed int sumdiffs;
|
||||
|
||||
/* Due to the fact that pix3 = pix2 + line_size, the pix3 of one
|
||||
* iteration becomes pix2 in the next iteration. We can use this
|
||||
* fact to avoid a potentially expensive unaligned read, as well
|
||||
* as some splitting, and vector addition each time around the loop.
|
||||
* Read unaligned pixels into our vectors. The vectors are as follows:
|
||||
* pix2v: pix2[0] - pix2[15] pix2iv: pix2[1] - pix2[16]
|
||||
* Split the pixel vectors into shorts. */
|
||||
vector unsigned char pix2v = vec_vsx_ld(0, pix2);
|
||||
vector unsigned char pix2iv = vec_vsx_ld(1, pix2);
|
||||
vector unsigned short pix2hv =
|
||||
(vector unsigned short) vec_mergeh(pix2v, zero);
|
||||
vector unsigned short pix2lv =
|
||||
(vector unsigned short) vec_mergel(pix2v, zero);
|
||||
vector unsigned short pix2ihv =
|
||||
(vector unsigned short) vec_mergeh(pix2iv, zero);
|
||||
vector unsigned short pix2ilv =
|
||||
(vector unsigned short) vec_mergel(pix2iv, zero);
|
||||
vector unsigned short t1 = vec_add(pix2hv, pix2ihv);
|
||||
vector unsigned short t2 = vec_add(pix2lv, pix2ilv);
|
||||
|
||||
vector unsigned short t3, t4;
|
||||
|
||||
for (i = 0; i < h; i++) {
|
||||
/* Read unaligned pixels into our vectors. The vectors are as follows:
|
||||
* pix1v: pix1[0] - pix1[15]
|
||||
* pix3v: pix3[0] - pix3[15] pix3iv: pix3[1] - pix3[16] */
|
||||
pix1v = vec_vsx_ld(0, pix1);
|
||||
pix3v = vec_vsx_ld(0, pix3);
|
||||
pix3iv = vec_vsx_ld(1, pix3);
|
||||
|
||||
/* Note that AltiVec does have vec_avg, but this works on vector pairs
|
||||
* and rounds up. We could do avg(avg(a, b), avg(c, d)), but the
|
||||
* rounding would mean that, for example, avg(3, 0, 0, 1) = 2, when
|
||||
* it should be 1. Instead, we have to split the pixel vectors into
|
||||
* vectors of shorts and do the averaging by hand. */
|
||||
|
||||
/* Split the pixel vectors into shorts. */
|
||||
pix3hv = (vector unsigned short) vec_mergeh(pix3v, zero);
|
||||
pix3lv = (vector unsigned short) vec_mergel(pix3v, zero);
|
||||
pix3ihv = (vector unsigned short) vec_mergeh(pix3iv, zero);
|
||||
pix3ilv = (vector unsigned short) vec_mergel(pix3iv, zero);
|
||||
|
||||
/* Do the averaging on them. */
|
||||
t3 = vec_add(pix3hv, pix3ihv);
|
||||
t4 = vec_add(pix3lv, pix3ilv);
|
||||
|
||||
avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
|
||||
avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
|
||||
|
||||
/* Pack the shorts back into a result. */
|
||||
avgv = vec_pack(avghv, avglv);
|
||||
|
||||
/* Calculate a sum of abs differences vector. */
|
||||
t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
|
||||
|
||||
/* Add each 4 pixel group together and put 4 results into sad. */
|
||||
sad = vec_sum4s(t5, sad);
|
||||
|
||||
pix1 += line_size;
|
||||
pix3 += line_size;
|
||||
/* Transfer the calculated values for pix3 into pix2. */
|
||||
t1 = t3;
|
||||
t2 = t4;
|
||||
}
|
||||
/* 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 sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -225,7 +403,42 @@ static int sad16_xy2_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
#if HAVE_VSX
|
||||
static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
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 < h; i++) {
|
||||
/* Read potentially unaligned pixels into t1 and t2. */
|
||||
vector unsigned char t1 =vec_vsx_ld(0, pix1);
|
||||
vector unsigned char t2 = vec_vsx_ld(0, pix2);
|
||||
|
||||
/* Calculate a sum of abs differences vector. */
|
||||
vector unsigned char t3 = vec_max(t1, t2);
|
||||
vector unsigned char t4 = vec_min(t1, t2);
|
||||
vector unsigned char t5 = vec_sub(t3, t4);
|
||||
|
||||
/* Add each 4 pixel group together and put 4 results into sad. */
|
||||
sad = vec_sum4s(t5, sad);
|
||||
|
||||
pix1 += line_size;
|
||||
pix2 += 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 sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -262,7 +475,49 @@ static int sad16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
#if HAVE_VSX
|
||||
static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
int i, 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 int sad = (vector unsigned int) vec_splat_u32(0);
|
||||
vector signed int sumdiffs;
|
||||
|
||||
for (i = 0; i < h; i++) {
|
||||
/* 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_vsx_ld(0, pix1);
|
||||
vector unsigned char pix2l = vec_vsx_ld(0, pix2);
|
||||
vector unsigned char t1 = vec_and(pix1l, permclear);
|
||||
vector unsigned char t2 = vec_and(pix2l, permclear);
|
||||
|
||||
/* Calculate a sum of abs differences vector. */
|
||||
vector unsigned char t3 = vec_max(t1, t2);
|
||||
vector unsigned char t4 = vec_min(t1, t2);
|
||||
vector unsigned char t5 = vec_sub(t3, t4);
|
||||
|
||||
/* Add each 4 pixel group together and put 4 results into sad. */
|
||||
sad = vec_sum4s(t5, sad);
|
||||
|
||||
pix1 += line_size;
|
||||
pix2 += 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 sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -309,6 +564,7 @@ static int sad8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
/* Sum of Squared Errors for an 8x8 block, AltiVec-enhanced.
|
||||
* It's the sad8_altivec code above w/ squaring added. */
|
||||
@ -364,6 +620,43 @@ static int sse8_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
/* Sum of Squared Errors for a 16x16 block, AltiVec-enhanced.
|
||||
* It's the sad16_altivec code above w/ squaring added. */
|
||||
#if HAVE_VSX
|
||||
static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
int i, s;
|
||||
const vector unsigned int zero =
|
||||
(const vector unsigned int) vec_splat_u32(0);
|
||||
vector unsigned int sum = (vector unsigned int) vec_splat_u32(0);
|
||||
vector signed int sumsqr;
|
||||
|
||||
for (i = 0; i < h; i++) {
|
||||
/* Read potentially unaligned pixels into t1 and t2. */
|
||||
vector unsigned char t1 = vec_vsx_ld(0, pix1);
|
||||
vector unsigned char t2 = vec_vsx_ld(0, pix2);
|
||||
|
||||
/* Since we want to use unsigned chars, we can take advantage
|
||||
* * of the fact that abs(a - b) ^ 2 = (a - b) ^ 2. */
|
||||
|
||||
/* Calculate abs differences vector. */
|
||||
vector unsigned char t3 = vec_max(t1, t2);
|
||||
vector unsigned char t4 = vec_min(t1, t2);
|
||||
vector unsigned char t5 = vec_sub(t3, t4);
|
||||
|
||||
/* Square the values and add them to our sum. */
|
||||
sum = vec_msum(t5, t5, sum);
|
||||
|
||||
pix1 += line_size;
|
||||
pix2 += line_size;
|
||||
}
|
||||
|
||||
/* Sum up the four partial sums, and put the result into s. */
|
||||
sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
|
||||
sumsqr = vec_splat(sumsqr, 3);
|
||||
vec_vsx_st(sumsqr, 0, &s);
|
||||
return s;
|
||||
}
|
||||
#else
|
||||
static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
int line_size, int h)
|
||||
{
|
||||
@ -403,6 +696,7 @@ static int sse16_altivec(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
|
||||
|
||||
return s;
|
||||
}
|
||||
#endif /* HAVE_VSX */
|
||||
|
||||
static int hadamard8_diff8x8_altivec(MpegEncContext *s, uint8_t *dst,
|
||||
uint8_t *src, int stride, int h)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user