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CopyYToAlpha to copy from a plane to alpha channel of ARGB

Browse Source 
BUG=275
TESTED=untested
R=ryanpetrie@google.com

Review URL: https://webrtc-codereview.appspot.com/2415004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@814 16f28f9a-4ce2-e073-06de-1de4eb20be90
This commit is contained in:
fbarchard@google.com 2013-10-17 07:32:16 +00:00
parent 3075de8285
commit adef267edf
6 changed files with 182 additions and 21 deletions
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6
include/libyuv/planar_functions.h
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@ -267,6 +267,12 @@ int ARGBCopyAlpha(const uint8* src_argb, int src_stride_argb,
uint8* dst_argb, int dst_stride_argb,
int width, int height);
// Copy ARGB to ARGB.
LIBYUV_API
int ARGBCopyYToAlpha(const uint8* src_y, int src_stride_y,
uint8* dst_argb, int dst_stride_argb,
int width, int height);
typedef void (*ARGBBlendRow)(const uint8* src_argb0, const uint8* src_argb1,
uint8* dst_argb, int width);

12
include/libyuv/row.h
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@ -168,6 +168,7 @@ extern "C" {
// TODO(fbarchard): Optimize and enable
// #define HAS_ARGBLUMACOLORTABLEROW_SSSE3
#define HAS_ARGBCOPYALPHAROW_SSE2
#define HAS_ARGBCOPYYTOALPHAROW_SSE2
// Caveat: Visual C 2012 required for AVX2.
#if _MSC_VER >= 1700
@ -187,6 +188,7 @@ extern "C" {
#define HAS_YUY2TOUVROW_AVX2
#define HAS_YUY2TOYROW_AVX2
#define HAS_ARGBCOPYALPHAROW_AVX2
#define HAS_ARGBCOPYYTOALPHAROW_AVX2
// Effects:
#define HAS_ARGBADDROW_AVX2
@ -699,9 +701,13 @@ void CopyRow_NEON(const uint8* src, uint8* dst, int count);
void CopyRow_MIPS(const uint8* src, uint8* dst, int count);
void CopyRow_C(const uint8* src, uint8* dst, int count);
void ARGBCopyAlphaRow_C(const uint8* src, uint8* dst, int width);
void ARGBCopyAlphaRow_SSE2(const uint8* src, uint8* dst, int width);
void ARGBCopyAlphaRow_AVX2(const uint8* src, uint8* dst, int width);
void ARGBCopyAlphaRow_C(const uint8* src_argb, uint8* dst_argb, int width);
void ARGBCopyAlphaRow_SSE2(const uint8* src_argb, uint8* dst_argb, int width);
void ARGBCopyAlphaRow_AVX2(const uint8* src_argb, uint8* dst_argb, int width);
void ARGBCopyYToAlphaRow_C(const uint8* src_y, uint8* dst_argb, int width);
void ARGBCopyYToAlphaRow_SSE2(const uint8* src_y, uint8* dst_argb, int width);
void ARGBCopyYToAlphaRow_AVX2(const uint8* src_y, uint8* dst_argb, int width);
void SetRow_X86(uint8* dst, uint32 v32, int count);
void ARGBSetRows_X86(uint8* dst, uint32 v32, int width,

54
source/planar_functions.cc
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@ -2162,15 +2162,14 @@ int ARGBLumaColorTable(const uint8* src_argb, int src_stride_argb,
return 0;
}
// Copy ARGB with optional flipping
// Copy Alpha from one ARGB image to another.
LIBYUV_API
int ARGBCopyAlpha(const uint8* src_argb, int src_stride_argb,
uint8* dst_argb, int dst_stride_argb,
int width, int height) {
// TODO(fbarchard): Consider macro for boiler plate checks, invert and/or
// row coalesce.
if (!src_argb || !dst_argb ||
width <= 0 || height == 0) {
if (!src_argb || !dst_argb || width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
@ -2181,9 +2180,9 @@ int ARGBCopyAlpha(const uint8* src_argb, int src_stride_argb,
}
// Coalesce contiguous rows.
if (src_stride_argb == width * 4 && dst_stride_argb == width * 4) {
return ARGBCopyAlpha(src_argb, 0,
dst_argb, 0,
width * height, 1);
width *= height;
height = 1;
src_stride_argb = dst_stride_argb = 0;
}
void (*ARGBCopyAlphaRow)(const uint8* src_argb, uint8* dst_argb, int width) =
ARGBCopyAlphaRow_C;
@ -2208,6 +2207,49 @@ int ARGBCopyAlpha(const uint8* src_argb, int src_stride_argb,
return 0;
}
// Copy a planar Y channel to the alpha channel of a destination ARGB image.
LIBYUV_API
int ARGBCopyYToAlpha(const uint8* src_y, int src_stride_y,
uint8* dst_argb, int dst_stride_argb,
int width, int height) {
if (!src_y || !dst_argb || width <= 0 || height == 0) {
return -1;
}
// Negative height means invert the image.
if (height < 0) {
height = -height;
src_y = src_y + (height - 1) * src_stride_y;
src_stride_y = -src_stride_y;
}
// Coalesce contiguous rows.
if (src_stride_y == width && dst_stride_argb == width * 4) {
width *= height;
height = 1;
src_stride_y = dst_stride_argb = 0;
}
void (*ARGBCopyYToAlphaRow)(const uint8* src_y, uint8* dst_argb, int width) =
ARGBCopyYToAlphaRow_C;
#if defined(HAS_ARGBCOPYYTOALPHAROW_SSE2)
if (TestCpuFlag(kCpuHasSSE2) &&
IS_ALIGNED(src_y, 16) && IS_ALIGNED(src_stride_y, 16) &&
IS_ALIGNED(dst_argb, 16) && IS_ALIGNED(dst_stride_argb, 16) &&
IS_ALIGNED(width, 8)) {
ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_SSE2;
}
#endif
#if defined(HAS_ARGBCOPYYTOALPHAROW_AVX2)
if (TestCpuFlag(kCpuHasAVX2) && IS_ALIGNED(width, 16)) {
ARGBCopyYToAlphaRow = ARGBCopyYToAlphaRow_AVX2;
}
#endif
for (int y = 0; y < height; ++y) {
ARGBCopyYToAlphaRow(src_y, dst_argb, width);
src_y += src_stride_y;
dst_argb += dst_stride_argb;
}
return 0;
}
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv

13
source/row_common.cc
View File

@ -2111,8 +2111,17 @@ void ARGBCopyAlphaRow_C(const uint8* src, uint8* dst, int width) {
}
}
#undef clamp0
#undef clamp255
void ARGBCopyYToAlphaRow_C(const uint8* src, uint8* dst, int width) {
for (int i = 0; i < width - 1; i += 2) {
dst[3] = src[0];
dst[7] = src[1];
dst += 8;
src += 2;
}
if (width & 1) {
dst[3] = src[0];
}
}
#ifdef __cplusplus
} // extern "C"

88
source/row_win.cc
View File

@ -3649,20 +3649,17 @@ void ARGBCopyAlphaRow_AVX2(const uint8* src, uint8* dst, int width) {
mov edx, [esp + 8] // dst
mov ecx, [esp + 12] // count
vpcmpeqb ymm0, ymm0, ymm0
vpsrld ymm1, ymm0, 8 // generate mask 0x00ffffff
vpslld ymm0, ymm0, 24 // generate mask 0xff000000
vpsrld ymm0, ymm0, 8 // generate mask 0x00ffffff
align 4
convertloop:
vpand ymm2, ymm0, [eax]
vpand ymm3, ymm0, [eax + 32]
vmovdqu ymm1, [eax]
vmovdqu ymm2, [eax + 32]
lea eax, [eax + 64]
vpand ymm4, ymm1, [edx]
vpand ymm5, ymm1, [edx + 32]
vpor ymm2, ymm2, ymm4
vpor ymm3, ymm3, ymm5
vmovdqu [edx], ymm2
vmovdqu [edx + 32], ymm3
vpblendvb ymm1, ymm1, [edx], ymm0
vpblendvb ymm2, ymm2, [edx + 32], ymm0
vmovdqu [edx], ymm1
vmovdqu [edx + 32], ymm2
lea edx, [edx + 64]
sub ecx, 16
jg convertloop
@ -3673,6 +3670,77 @@ void ARGBCopyAlphaRow_AVX2(const uint8* src, uint8* dst, int width) {
}
#endif // HAS_ARGBCOPYALPHAROW_AVX2
#ifdef HAS_ARGBCOPYYTOALPHAROW_SSE2
// width in pixels
__declspec(naked) __declspec(align(16))
void ARGBCopyYToAlphaRow_SSE2(const uint8* src, uint8* dst, int width) {
__asm {
mov eax, [esp + 4] // src
mov edx, [esp + 8] // dst
mov ecx, [esp + 12] // count
pcmpeqb xmm0, xmm0 // generate mask 0xff000000
pslld xmm0, 24
pcmpeqb xmm1, xmm1 // generate mask 0x00ffffff
psrld xmm1, 8
align 4
convertloop:
movq xmm2, qword ptr [eax] // 8 Y's
lea eax, [eax + 8]
punpcklbw xmm2, xmm2
punpckhwd xmm3, xmm2
punpcklwd xmm2, xmm2
movdqa xmm4, [edx]
movdqa xmm5, [edx + 16]
pand xmm2, xmm0
pand xmm3, xmm0
pand xmm4, xmm1
pand xmm5, xmm1
por xmm2, xmm4
por xmm3, xmm5
movdqa [edx], xmm2
movdqa [edx + 16], xmm3
lea edx, [edx + 32]
sub ecx, 8
jg convertloop
ret
}
}
#endif // HAS_ARGBCOPYYTOALPHAROW_SSE2
#ifdef HAS_ARGBCOPYYTOALPHAROW_AVX2
// width in pixels
__declspec(naked) __declspec(align(16))
void ARGBCopyYToAlphaRow_AVX2(const uint8* src, uint8* dst, int width) {
__asm {
mov eax, [esp + 4] // src
mov edx, [esp + 8] // dst
mov ecx, [esp + 12] // count
vpcmpeqb ymm0, ymm0, ymm0
vpsrld ymm0, ymm0, 8 // generate mask 0x00ffffff
align 4
convertloop:
vpmovzxbd ymm1, qword ptr [eax]
vpmovzxbd ymm2, qword ptr [eax + 8]
lea eax, [eax + 16]
vpslld ymm1, ymm1, 24
vpslld ymm2, ymm2, 24
vpblendvb ymm1, ymm1, [edx], ymm0
vpblendvb ymm2, ymm2, [edx + 32], ymm0
vmovdqu [edx], ymm1
vmovdqu [edx + 32], ymm2
lea edx, [edx + 64]
sub ecx, 16
jg convertloop
vzeroupper
ret
}
}
#endif // HAS_ARGBCOPYYTOALPHAROW_AVX2
#ifdef HAS_SETROW_X86
// SetRow8 writes 'count' bytes using a 32 bit value repeated.
__declspec(naked) __declspec(align(16))

30
unit_test/planar_test.cc
View File

@ -1936,4 +1936,34 @@ TEST_F(libyuvTest, TestARGBCopyAlpha) {
free_aligned_buffer_64(orig_pixels)
}
TEST_F(libyuvTest, TestARGBCopyYToAlpha) {
const int kPixels = benchmark_width_ * benchmark_height_;
align_buffer_64(orig_pixels, kPixels);
align_buffer_64(dst_pixels_opt, kPixels * 4);
align_buffer_64(dst_pixels_c, kPixels * 4);
MemRandomize(orig_pixels, kPixels);
MemRandomize(dst_pixels_opt, kPixels * 4);
memcpy(dst_pixels_c, dst_pixels_opt, kPixels * 4);
MaskCpuFlags(0);
ARGBCopyYToAlpha(orig_pixels, benchmark_width_,
dst_pixels_c, benchmark_width_ * 4,
benchmark_width_, benchmark_height_);
MaskCpuFlags(-1);
for (int i = 0; i < benchmark_iterations_; ++i) {
ARGBCopyYToAlpha(orig_pixels, benchmark_width_,
dst_pixels_opt, benchmark_width_ * 4,
benchmark_width_, benchmark_height_);
}
for (int i = 0; i < kPixels * 4; ++i) {
EXPECT_EQ(dst_pixels_c[i], dst_pixels_opt[i]);
}
free_aligned_buffer_64(dst_pixels_c)
free_aligned_buffer_64(dst_pixels_opt)
free_aligned_buffer_64(orig_pixels)
}
} // namespace libyuv