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scale columns ported to SSSE3

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BUG=208
TESTED=runyuv Scale*640*
Review URL: https://webrtc-codereview.appspot.com/1292004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@647 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-04-05 21:03:28 +00:00
parent ff4a84168d
commit a007046105
1 changed files with 60 additions and 1 deletions
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61
source/scale_argb.cc
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@ -421,6 +421,54 @@ void ScaleARGBFilterRows_SSSE3(uint8* dst_argb, const uint8* src_argb,
}
}
// Bilinear row filtering combines 2x1 -> 1x1. SSSE3 version.
// TODO(fbarchard): Port to Neon
// TODO(fbarchard): Port to Posix
// TODO(fbarchard): Unroll for 2 pixels for better pairing and memory access.
#define HAS_SCALEARGBFILTERCOLS_SSSE3
__declspec(naked) __declspec(align(16))
static void ScaleARGBFilterCols_SSSE3(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
__asm {
push ebx
push esi
push edi
mov edi, [esp + 12 + 4] // dst_argb
mov esi, [esp + 12 + 8] // src_argb
mov ecx, [esp + 12 + 12] // dst_width
mov edx, [esp + 12 + 16] // x
mov ebx, [esp + 12 + 20] // dx
pcmpeqb xmm5, xmm5 // generate 0x007f for inverting fraction.
psrlw xmm5, 9
align 16
xloop:
mov eax, edx // get x integer offset
shr eax, 16
movq xmm0, qword ptr [esi + eax * 4] // 2 source pixels
pshufd xmm1, xmm0, 1 // second pixel
punpcklbw xmm0, xmm1 // aarrggbb
movd xmm2, edx // get x fraction
psrlw xmm2, 9 // 7 bit fraction
punpcklbw xmm2, xmm2
punpcklwd xmm2, xmm2
pshufd xmm2, xmm2, 0
pxor xmm2, xmm5 // 0..7f and 7f..0
pmaddubsw xmm0, xmm2
psrlw xmm0, 7
packuswb xmm0, xmm0
add edx, ebx // x += dx
sub ecx, 1
movd [edi], xmm0
lea edi, [edi + 4]
jg xloop
pop edi
pop esi
pop ebx
ret
}
}
#elif !defined(LIBYUV_DISABLE_X86) && (defined(__x86_64__) || defined(__i386__))
// GCC versions of row functions are verbatim conversions from Visual C.
// Generated using gcc disassembly on Visual C object file:
@ -1030,6 +1078,10 @@ static void ScaleARGBBilinear(int src_width, int src_height,
ptrdiff_t src_stride,
int dst_width, int source_y_fraction) =
ScaleARGBFilterRows_C;
void (*ScaleARGBFilterCols)(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) =
ScaleARGBFilterCols_C;
#if defined(HAS_SCALEARGBFILTERROWS_SSE2)
if (TestCpuFlag(kCpuHasSSE2) && IS_ALIGNED(src_width, 4) &&
IS_ALIGNED(src_argb, 16) && IS_ALIGNED(src_stride, 16)) {
@ -1042,11 +1094,18 @@ static void ScaleARGBBilinear(int src_width, int src_height,
ScaleARGBFilterRows = ScaleARGBFilterRows_SSSE3;
}
#endif
#if defined(HAS_SCALEARGBFILTERCOLS_SSSE3)
if (TestCpuFlag(kCpuHasSSSE3)) {
ScaleARGBFilterCols = ScaleARGBFilterCols_SSSE3;
}
#endif
#if defined(HAS_SCALEARGBFILTERROWS_NEON)
if (TestCpuFlag(kCpuHasNEON) && IS_ALIGNED(src_width, 4)) {
ScaleARGBFilterRows = ScaleARGBFilterRows_NEON;
}
#endif
int dx = (src_width << 16) / dst_width;
int dy = (src_height << 16) / dst_height;
int x = (dx >= 65536) ? ((dx >> 1) - 32768) : (dx >> 1);
@ -1060,7 +1119,7 @@ static void ScaleARGBBilinear(int src_width, int src_height,
int yf = (y >> 8) & 255;
const uint8* src = src_argb + yi * src_stride;
ScaleARGBFilterRows(row, src, src_stride, src_width, yf);
ScaleARGBFilterCols_C(dst_argb, row, dst_width, x, dx);
ScaleARGBFilterCols(dst_argb, row, dst_width, x, dx);
dst_argb += dst_stride;
y += dy;
}