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swscale/ppc: VSX-optimize yuv2422_2

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./ffmpeg -f lavfi -i yuvtestsrc=duration=1:size=1200x1440 -sws_flags area \
                -s 1200x720 -f null -vframes 100 -pix_fmt $i -nostats \
                -cpuflags 0 -v error -

5.1x speedup:

yuyv422
  19339 UNITS in yuv2packed2,   16384 runs,      0 skips
   3718 UNITS in yuv2packed2,   16383 runs,      1 skips
yvyu422
  19438 UNITS in yuv2packed2,   16384 runs,      0 skips
   3800 UNITS in yuv2packed2,   16380 runs,      4 skips
uyvy422
  19128 UNITS in yuv2packed2,   16384 runs,      0 skips
   3721 UNITS in yuv2packed2,   16380 runs,      4 skips
This commit is contained in:
Lauri Kasanen 2019-03-24 14:23:46 +02:00
parent a6a31ca3d9
commit 9a2db4dc61
1 changed files with 69 additions and 0 deletions
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69
libswscale/ppc/swscale_vsx.c
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@ -726,6 +726,61 @@ write422(const vector int16_t vy1, const vector int16_t vy2,
}
}
#define SETUP(x, buf0, buf1, alpha) { \
x = vec_ld(0, buf0); \
tmp = vec_mule(x, alpha); \
tmp2 = vec_mulo(x, alpha); \
tmp3 = vec_mergeh(tmp, tmp2); \
tmp4 = vec_mergel(tmp, tmp2); \
\
x = vec_ld(0, buf1); \
tmp = vec_mule(x, alpha); \
tmp2 = vec_mulo(x, alpha); \
tmp5 = vec_mergeh(tmp, tmp2); \
tmp6 = vec_mergel(tmp, tmp2); \
\
tmp3 = vec_add(tmp3, tmp5); \
tmp4 = vec_add(tmp4, tmp6); \
\
tmp3 = vec_sra(tmp3, shift19); \
tmp4 = vec_sra(tmp4, shift19); \
x = vec_packs(tmp3, tmp4); \
}
static av_always_inline void
yuv2422_2_vsx_template(SwsContext *c, const int16_t *buf[2],
const int16_t *ubuf[2], const int16_t *vbuf[2],
const int16_t *abuf[2], uint8_t *dest, int dstW,
int yalpha, int uvalpha, int y,
enum AVPixelFormat target)
{
const int16_t *buf0 = buf[0], *buf1 = buf[1],
*ubuf0 = ubuf[0], *ubuf1 = ubuf[1],
*vbuf0 = vbuf[0], *vbuf1 = vbuf[1];
const int16_t yalpha1 = 4096 - yalpha;
const int16_t uvalpha1 = 4096 - uvalpha;
vector int16_t vy1, vy2, vu, vv;
vector int32_t tmp, tmp2, tmp3, tmp4, tmp5, tmp6;
const vector int16_t vyalpha1 = vec_splats(yalpha1);
const vector int16_t vuvalpha1 = vec_splats(uvalpha1);
const vector uint32_t shift19 = vec_splats(19U);
int i;
av_assert2(yalpha <= 4096U);
av_assert2(uvalpha <= 4096U);
for (i = 0; i < ((dstW + 1) >> 1); i += 8) {
SETUP(vy1, &buf0[i * 2], &buf1[i * 2], vyalpha1)
SETUP(vy2, &buf0[(i + 4) * 2], &buf1[(i + 4) * 2], vyalpha1)
SETUP(vu, &ubuf0[i], &ubuf1[i], vuvalpha1)
SETUP(vv, &vbuf0[i], &vbuf1[i], vuvalpha1)
write422(vy1, vy2, vu, vv, &dest[i * 4], target);
}
}
#undef SETUP
static av_always_inline void
yuv2422_1_vsx_template(SwsContext *c, const int16_t *buf0,
const int16_t *ubuf[2], const int16_t *vbuf[2],
@ -786,7 +841,18 @@ yuv2422_1_vsx_template(SwsContext *c, const int16_t *buf0,
}
}
#define YUV2PACKEDWRAPPER2(name, base, ext, fmt) \
static void name ## ext ## _2_vsx(SwsContext *c, const int16_t *buf[2], \
const int16_t *ubuf[2], const int16_t *vbuf[2], \
const int16_t *abuf[2], uint8_t *dest, int dstW, \
int yalpha, int uvalpha, int y) \
{ \
name ## base ## _2_vsx_template(c, buf, ubuf, vbuf, abuf, \
dest, dstW, yalpha, uvalpha, y, fmt); \
}
#define YUV2PACKEDWRAPPER(name, base, ext, fmt) \
YUV2PACKEDWRAPPER2(name, base, ext, fmt) \
static void name ## ext ## _1_vsx(SwsContext *c, const int16_t *buf0, \
const int16_t *ubuf[2], const int16_t *vbuf[2], \
const int16_t *abuf0, uint8_t *dest, int dstW, \
@ -909,12 +975,15 @@ av_cold void ff_sws_init_swscale_vsx(SwsContext *c)
switch (dstFormat) {
case AV_PIX_FMT_YUYV422:
c->yuv2packed1 = yuv2yuyv422_1_vsx;
c->yuv2packed2 = yuv2yuyv422_2_vsx;
break;
case AV_PIX_FMT_YVYU422:
c->yuv2packed1 = yuv2yvyu422_1_vsx;
c->yuv2packed2 = yuv2yvyu422_2_vsx;
break;
case AV_PIX_FMT_UYVY422:
c->yuv2packed1 = yuv2uyvy422_1_vsx;
c->yuv2packed2 = yuv2uyvy422_2_vsx;
break;
}
}