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skia2/gm/wacky_yuv_formats.cpp
Robert Phillips bfa76f20bf Add GM for less common YUV formats (take 2) 
Bug: skia:7903
Change-Id: I2399e4aaae6b91914d637ff0e921e04596b52836
Reviewed-on: https://skia-review.googlesource.com/159141
Reviewed-by: Jim Van Verth <jvanverth@google.com>
Commit-Queue: Robert Phillips <robertphillips@google.com>
2018-10-03 17:22:02 +00:00

641 lines
23 KiB
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/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "sk_tool_utils.h"
#include "SkColorPriv.h"
#include "SkImageGenerator.h"
#include "SkImagePriv.h"
#include "SkPath.h"
static const int kTileWidthHeight = 128;
static const int kLabelWidth = 64;
static const int kLabelHeight = 32;
static const int kPad = 1;
constexpr SkColor kGreen = SkColorSetARGB(0xFF, 104, 240, 178);
constexpr SkColor kBlue = SkColorSetARGB(0xFF, 252, 167, 173);
constexpr SkColor kYellow = SkColorSetARGB(0xFF, 117, 221, 255);
enum YUVFormat {
// 4:4:4 formats, 32 bpp
AYUV_YUVFormat, // 8-bit YUVA values all interleaved
// 4:2:0 formats, 12 bpp
kNV12_YUVFormat, // 8-bit Y plane + 2x2 down sampled interleaved U/V planes
kNV21_YUVFormat, // same as kNV12 but w/ U/V reversed in the interleaved plane
kI420_YUVFormat, // 8-bit Y plane + 2x2 down sampled U and V planes
kYV12_YUVFormat, // 8-bit Y plane + 2x2 down sampled V and U planes
kLast_YUVFormat = kYV12_YUVFormat
};
// All the planes we need to construct the various YUV formats
struct PlaneData {
SkBitmap fYFull;
SkBitmap fUFull;
SkBitmap fVFull;
SkBitmap fAFull;
SkBitmap fUQuarter; // 2x2 downsampled U channel
SkBitmap fVQuarter; // 2x2 downsampled V channel
};
// Add a portion of a circle to 'path'. The points 'o1' and 'o2' are on the border of the circle
// and have tangents 'v1' and 'v2'.
static void add_arc(SkPath* path,
const SkPoint& o1, const SkVector& v1,
const SkPoint& o2, const SkVector& v2,
SkTDArray<SkRect>* circles, bool takeLongWayRound) {
SkVector v3 = { -v1.fY, v1.fX };
SkVector v4 = { v2.fY, -v2.fX };
SkScalar t = ((o2.fX - o1.fX) * v4.fY - (o2.fY - o1.fY) * v4.fX) / v3.cross(v4);
SkPoint center = { o1.fX + t * v3.fX, o1.fY + t * v3.fY };
SkRect r = { center.fX - t, center.fY - t, center.fX + t, center.fY + t };
if (circles) {
circles->push_back(r);
}
SkVector startV = o1 - center, endV = o2 - center;
startV.normalize();
endV.normalize();
SkScalar startDeg = SkRadiansToDegrees(SkScalarATan2(startV.fY, startV.fX));
SkScalar endDeg = SkRadiansToDegrees(SkScalarATan2(endV.fY, endV.fX));
startDeg += 360.0f;
startDeg = fmodf(startDeg, 360.0f);
endDeg += 360.0f;
endDeg = fmodf(endDeg, 360.0f);
if (endDeg < startDeg) {
endDeg += 360.0f;
}
SkScalar sweepDeg = SkTAbs(endDeg - startDeg);
if (!takeLongWayRound) {
sweepDeg = sweepDeg - 360;
}
path->arcTo(r, startDeg, sweepDeg, false);
}
static SkPath create_splat(const SkPoint& o, SkScalar innerRadius, SkScalar outerRadius,
SkScalar ratio, int numLobes, SkTDArray<SkRect>* circles) {
if (numLobes <= 1) {
return SkPath();
}
SkPath p;
int numDivisions = 2 * numLobes;
SkScalar fullLobeDegrees = 360.0f / numLobes;
SkScalar outDegrees = ratio * fullLobeDegrees / (ratio + 1.0f);
SkScalar innerDegrees = fullLobeDegrees / (ratio + 1.0f);
SkMatrix outerStep, innerStep;
outerStep.setRotate(outDegrees);
innerStep.setRotate(innerDegrees);
SkVector curV = SkVector::Make(0.0f, 1.0f);
if (circles) {
circles->push_back(SkRect::MakeLTRB(o.fX - innerRadius, o.fY - innerRadius,
o.fX + innerRadius, o.fY + innerRadius));
}
p.moveTo(o.fX + innerRadius * curV.fX, o.fY + innerRadius * curV.fY);
for (int i = 0; i < numDivisions; ++i) {
SkVector nextV;
if (0 == (i % 2)) {
nextV = outerStep.mapVector(curV.fX, curV.fY);
SkPoint top = SkPoint::Make(o.fX + outerRadius * curV.fX,
o.fY + outerRadius * curV.fY);
SkPoint nextTop = SkPoint::Make(o.fX + outerRadius * nextV.fX,
o.fY + outerRadius * nextV.fY);
p.lineTo(top);
add_arc(&p, top, curV, nextTop, nextV, circles, true);
} else {
nextV = innerStep.mapVector(curV.fX, curV.fY);
SkPoint bot = SkPoint::Make(o.fX + innerRadius * curV.fX,
o.fY + innerRadius * curV.fY);
SkPoint nextBot = SkPoint::Make(o.fX + innerRadius * nextV.fX,
o.fY + innerRadius * nextV.fY);
p.lineTo(bot);
add_arc(&p, bot, curV, nextBot, nextV, nullptr, false);
}
curV = nextV;
}
p.close();
return p;
}
static SkBitmap make_bitmap(const SkPath& path, const SkTDArray<SkRect>& circles, bool opaque) {
SkImageInfo ii = SkImageInfo::Make(kTileWidthHeight, kTileWidthHeight,
kRGBA_8888_SkColorType, kPremul_SkAlphaType);
SkBitmap bm;
bm.allocPixels(ii);
std::unique_ptr<SkCanvas> canvas = SkCanvas::MakeRasterDirectN32(ii.width(), ii.height(),
(SkPMColor*)bm.getPixels(),
bm.rowBytes());
canvas->clear(opaque ? kGreen : SK_ColorTRANSPARENT);
SkPaint paint;
paint.setAntiAlias(false); // serialize-8888 doesn't seem to work well w/ partial transparency
paint.setColor(kBlue);
canvas->drawPath(path, paint);
paint.setColor(opaque ? kYellow : SK_ColorTRANSPARENT);
paint.setBlendMode(SkBlendMode::kSrc);
for (int i = 0; i < circles.count(); ++i) {
SkRect r = circles[i];
r.inset(r.width()/4, r.height()/4);
canvas->drawOval(r, paint);
}
return bm;
}
static void extract_planes(const SkBitmap& bm, SkYUVColorSpace yuvColorSpace, PlaneData* planes) {
SkASSERT(!(bm.width() % 2));
SkASSERT(!(bm.height() % 2));
planes->fYFull.allocPixels(SkImageInfo::MakeA8(bm.width(), bm.height()));
planes->fUFull.allocPixels(SkImageInfo::MakeA8(bm.width(), bm.height()));
planes->fVFull.allocPixels(SkImageInfo::MakeA8(bm.width(), bm.height()));
planes->fAFull.allocPixels(SkImageInfo::MakeA8(bm.width(), bm.height()));
planes->fUQuarter.allocPixels(SkImageInfo::MakeA8(bm.width()/2, bm.height()/2));
planes->fVQuarter.allocPixels(SkImageInfo::MakeA8(bm.width()/2, bm.height()/2));
float Kr, Kb, Z, S;
switch (yuvColorSpace) {
case kJPEG_SkYUVColorSpace: // computer
Kr = 0.299f;
Kb = 0.114f;
Z = 0.0f;
S = 255.0f;
break;
case kRec601_SkYUVColorSpace: // SD
Kr = 0.299f;
Kb = 0.114f;
Z = 16.0f;
S = 219.f;
break;
case kRec709_SkYUVColorSpace: // HD
Kr = 0.2126f;
Kb = 0.0722f;
Z = 16.0f;
S = 219.0f;
break;
}
for (int y = 0; y < bm.height(); ++y) {
for (int x = 0; x < bm.width(); ++x) {
SkColor col = bm.getColor(x, y);
uint8_t r = SkColorGetR(col);
uint8_t b = SkColorGetB(col);
uint8_t g = SkColorGetG(col);
float L = Kr * r + Kb * g + (1.0f - Kr - Kb) * b;
uint8_t Y, U, V;
Y = SkScalarRoundToInt((219*(L-Z)/S + 16));
U = SkScalarPin(SkScalarRoundToInt((112*(b-L) / ((1-Kb)*S) + 128)), 0, 255);
V = SkScalarPin(SkScalarRoundToInt((112*(r-L) / ((1-Kr)*S) + 128)), 0, 255);
*planes->fYFull.getAddr8(x, y) = Y;
*planes->fUFull.getAddr8(x, y) = U;
*planes->fVFull.getAddr8(x, y) = V;
*planes->fAFull.getAddr8(x, y) = SkColorGetA(col);
}
}
for (int y = 0; y < bm.height()/2; ++y) {
for (int x = 0; x < bm.width()/2; ++x) {
uint32_t uAccum = 0, vAccum = 0;
uAccum += *planes->fUFull.getAddr8(2*x, 2*y);
uAccum += *planes->fUFull.getAddr8(2*x+1, 2*y);
uAccum += *planes->fUFull.getAddr8(2*x, 2*y+1);
uAccum += *planes->fUFull.getAddr8(2*x+1, 2*y+1);
*planes->fUQuarter.getAddr8(x, y) = uAccum / 4.0f;
vAccum += *planes->fVFull.getAddr8(2*x, 2*y);
vAccum += *planes->fVFull.getAddr8(2*x+1, 2*y);
vAccum += *planes->fVFull.getAddr8(2*x, 2*y+1);
vAccum += *planes->fVFull.getAddr8(2*x+1, 2*y+1);
*planes->fVQuarter.getAddr8(x, y) = uAccum / 4.0f;
}
}
}
// Recombine the separate planes into some YUV format
static void create_YUV(const PlaneData& planes, YUVFormat yuvFormat,
SkBitmap resultBMs[], SkYUVAIndex yuvaIndices[4], bool opaque) {
int nextLayer = 0;
switch (yuvFormat) {
case AYUV_YUVFormat: {
SkBitmap yuvaFull;
yuvaFull.allocPixels(SkImageInfo::Make(planes.fYFull.width(), planes.fYFull.height(),
kRGBA_8888_SkColorType, kUnpremul_SkAlphaType));
for (int y = 0; y < planes.fYFull.height(); ++y) {
for (int x = 0; x < planes.fYFull.width(); ++x) {
uint8_t Y = *planes.fYFull.getAddr8(x, y);
uint8_t U = *planes.fUFull.getAddr8(x, y);
uint8_t V = *planes.fVFull.getAddr8(x, y);
uint8_t A = *planes.fAFull.getAddr8(x, y);
// NOT premul!
*yuvaFull.getAddr32(x, y) = SkPackARGB32NoCheck(A, Y, U, V);
}
}
resultBMs[nextLayer++] = yuvaFull;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = kB_SkImageSourceChannel;
yuvaIndices[1].fIndex = 0;
yuvaIndices[1].fChannel = kG_SkImageSourceChannel;
yuvaIndices[2].fIndex = 0;
yuvaIndices[2].fChannel = kR_SkImageSourceChannel;
yuvaIndices[3].fIndex = 0;
yuvaIndices[3].fChannel = kA_SkImageSourceChannel;
break;
}
case kNV12_YUVFormat: {
SkBitmap uvQuarter;
// There isn't a RG color type. Approx w/ 2x wider A8.
uvQuarter.allocPixels(SkImageInfo::MakeA8(planes.fYFull.width(),
planes.fYFull.height()/2));
for (int y = 0; y < planes.fYFull.height()/2; ++y) {
for (int x = 0; x < planes.fYFull.width()/2; ++x) {
*uvQuarter.getAddr8(2*x, y) = *planes.fUQuarter.getAddr8(x, y);
*uvQuarter.getAddr8(2*x+1, y) = *planes.fVQuarter.getAddr8(x, y);
}
}
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = uvQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = kA_SkImageSourceChannel;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = kR_SkImageSourceChannel;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = kG_SkImageSourceChannel;
break;
}
case kNV21_YUVFormat: {
SkBitmap vuQuarter;
// There isn't a RG color type. Approx w/ 2x wider A8.
vuQuarter.allocPixels(SkImageInfo::MakeA8(planes.fYFull.width(),
planes.fYFull.height()/2));
for (int y = 0; y < planes.fYFull.height()/2; ++y) {
for (int x = 0; x < planes.fYFull.width()/2; ++x) {
*vuQuarter.getAddr8(2*x, y) = *planes.fVQuarter.getAddr8(x, y);
*vuQuarter.getAddr8(2*x+1, y) = *planes.fUQuarter.getAddr8(x, y);
}
}
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = vuQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = kA_SkImageSourceChannel;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = kG_SkImageSourceChannel;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = kR_SkImageSourceChannel;
break;
}
case kI420_YUVFormat:
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = planes.fUQuarter;
resultBMs[nextLayer++] = planes.fVQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = kA_SkImageSourceChannel;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = kA_SkImageSourceChannel;
yuvaIndices[2].fIndex = 2;
yuvaIndices[2].fChannel = kA_SkImageSourceChannel;
break;
case kYV12_YUVFormat:
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = planes.fVQuarter;
resultBMs[nextLayer++] = planes.fUQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = kA_SkImageSourceChannel;
yuvaIndices[1].fIndex = 2;
yuvaIndices[1].fChannel = kA_SkImageSourceChannel;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = kA_SkImageSourceChannel;
break;
}
if (AYUV_YUVFormat != yuvFormat) {
if (opaque) {
yuvaIndices[3].fIndex = -1;
} else {
resultBMs[nextLayer] = planes.fAFull;
yuvaIndices[3].fIndex = nextLayer;
yuvaIndices[3].fChannel = kA_SkImageSourceChannel;
}
}
}
class YUVGenerator : public SkImageGenerator {
public:
YUVGenerator(const SkImageInfo& ii,
YUVFormat yuvFormat,
SkYUVColorSpace yuvColorSpace,
SkYUVAIndex yuvaIndices[4],
SkBitmap bitmaps[4])
: SkImageGenerator(ii)
, fYUVFormat(yuvFormat)
, fYUVColorSpace(yuvColorSpace) {
memcpy(fYUVAIndices, yuvaIndices, sizeof(fYUVAIndices));
bool used[4] = { false, false, false, false };
for (int i = 0; i < 4; ++i) {
if (yuvaIndices[i].fIndex >= 0) {
SkASSERT(yuvaIndices[i].fIndex < 4);
used[yuvaIndices[i].fIndex] = true;
} else {
SkASSERT(3 == i); // only the 'A' channel can be unspecified
}
}
for (int i = 0; i < 4; ++i) {
if (used[i]) {
fYUVBitmaps[i] = bitmaps[i];
}
}
}
protected:
bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
const Options&) override {
if (kUnknown_SkColorType == fFlattened.colorType()) {
fFlattened.allocPixels(info);
for (int y = 0; y < info.height(); ++y) {
for (int x = 0; x < info.width(); ++x) {
uint8_t alpha = 255;
if (fYUVAIndices[3].fIndex >= 0) {
int alphaIndex = fYUVAIndices[3].fIndex;
if (kAlpha_8_SkColorType == fYUVBitmaps[alphaIndex].colorType()) {
alpha = *fYUVBitmaps[alphaIndex].getAddr8(x, y);
} else {
alpha = SkColorGetA(fYUVBitmaps[alphaIndex].getColor(x, y));
}
}
uint8_t g;
if (kAlpha_8_SkColorType == fYUVBitmaps[fYUVAIndices[0].fIndex].colorType()) {
g = *fYUVBitmaps[fYUVAIndices[0].fIndex].getAddr8(x, y);
} else {
g = SkColorGetR(fYUVBitmaps[fYUVAIndices[0].fIndex].getColor(x, y));
}
// Making premul here.
*fFlattened.getAddr32(x, y) = SkPreMultiplyARGB(alpha, g, g, g);
}
}
}
return fFlattened.readPixels(info, pixels, rowBytes, 0, 0);
}
bool onQueryYUV8(SkYUVSizeInfo* size, SkYUVColorSpace* yuvColorSpace) const override {
if (kI420_YUVFormat != fYUVFormat && kYV12_YUVFormat != fYUVFormat) {
return false; // currently this API only supports planar formats
}
*yuvColorSpace = fYUVColorSpace;
size->fSizes[0].fWidth = fYUVBitmaps[fYUVAIndices[0].fIndex].width();
size->fSizes[0].fHeight = fYUVBitmaps[fYUVAIndices[0].fIndex].height();
size->fWidthBytes[0] = fYUVBitmaps[fYUVAIndices[0].fIndex].rowBytes();
size->fSizes[1].fWidth = fYUVBitmaps[fYUVAIndices[1].fIndex].width();
size->fSizes[1].fHeight = fYUVBitmaps[fYUVAIndices[1].fIndex].height();
size->fWidthBytes[1] = fYUVBitmaps[fYUVAIndices[1].fIndex].rowBytes();
size->fSizes[2].fWidth = fYUVBitmaps[fYUVAIndices[2].fIndex].width();
size->fSizes[2].fHeight = fYUVBitmaps[fYUVAIndices[2].fIndex].height();
size->fWidthBytes[2] = fYUVBitmaps[fYUVAIndices[2].fIndex].rowBytes();
return true;
}
bool onGetYUV8Planes(const SkYUVSizeInfo&, void* planes[3]) override {
planes[0] = fYUVBitmaps[fYUVAIndices[0].fIndex].getAddr(0, 0);
planes[1] = fYUVBitmaps[fYUVAIndices[1].fIndex].getAddr(0, 0);
planes[2] = fYUVBitmaps[fYUVAIndices[2].fIndex].getAddr(0, 0);
return true;
}
private:
YUVFormat fYUVFormat;
SkYUVColorSpace fYUVColorSpace;
SkYUVAIndex fYUVAIndices[4];
SkBitmap fYUVBitmaps[4];
SkBitmap fFlattened;
};
static sk_sp<SkImage> make_yuv_gen_image(const SkImageInfo& ii,
YUVFormat yuvFormat,
SkYUVColorSpace yuvColorSpace,
SkYUVAIndex yuvaIndices[4],
SkBitmap bitmaps[]) {
std::unique_ptr<SkImageGenerator> gen(new YUVGenerator(ii, yuvFormat, yuvColorSpace,
yuvaIndices, bitmaps));
return SkImage::MakeFromGenerator(std::move(gen));
}
static void draw_col_label(SkCanvas* canvas, int x, int yuvColorSpace, bool opaque) {
static const char* kYUVColorSpaceNames[] = { "JPEG", "601", "709" };
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kYUVColorSpaceNames) == kLastEnum_SkYUVColorSpace+1);
SkPaint textPaint;
textPaint.setTextAlign(SkPaint::kCenter_Align);
sk_tool_utils::set_portable_typeface(&textPaint, nullptr, SkFontStyle::Bold());
textPaint.setTextSize(16);
SkRect textRect;
SkString colLabel;
colLabel.printf("%s", kYUVColorSpaceNames[yuvColorSpace]);
textPaint.measureText(colLabel.c_str(), colLabel.size(), &textRect);
int y = textRect.height();
canvas->drawText(colLabel.c_str(), colLabel.size(), x, y, textPaint);
colLabel.printf("%s", opaque ? "Opaque" : "Transparent");
textPaint.measureText(colLabel.c_str(), colLabel.size(), &textRect);
y += textRect.height();
canvas->drawText(colLabel.c_str(), colLabel.size(), x, y, textPaint);
}
static void draw_row_label(SkCanvas* canvas, int y, int yuvFormat) {
static const char* kYUVFormatNames[] = { "AYUV", "NV12", "NV21", "I420", "YV12" };
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kYUVFormatNames) == kLast_YUVFormat+1);
SkPaint textPaint;
textPaint.setTextAlign(SkPaint::kLeft_Align);
sk_tool_utils::set_portable_typeface(&textPaint, nullptr, SkFontStyle::Bold());
textPaint.setTextSize(16);
SkRect textRect;
SkString rowLabel;
rowLabel.printf("%s", kYUVFormatNames[yuvFormat]);
textPaint.measureText(rowLabel.c_str(), rowLabel.size(), &textRect);
y += kTileWidthHeight/2 + textRect.height()/2;
canvas->drawText(rowLabel.c_str(), rowLabel.size(), 0, y, textPaint);
}
namespace skiagm {
// This GM creates an opaque and transparent bitmap, extracts the planes and then recombines
// them into various YUV formats. It then renders the results in the grid:
//
// JPEG 601 709
// Transparent Opaque Transparent Opaque Transparent Opaque
// AYUV
// NV12
// NV21
// I420
// YV12
class WackyYUVFormatsGM : public GM {
public:
WackyYUVFormatsGM() {
this->setBGColor(0xFFCCCCCC);
}
protected:
SkString onShortName() override {
return SkString("wacky_yuv_formats");
}
SkISize onISize() override {
int numCols = 2 * (kLastEnum_SkYUVColorSpace + 1); // opacity x color-space
int numRows = 1 + (kLast_YUVFormat + 1); // origin + # yuv formats
return SkISize::Make(kLabelWidth + numCols * (kTileWidthHeight + kPad),
kLabelHeight + numRows * (kTileWidthHeight + kPad));
}
void onOnceBeforeDraw() override {
SkPoint origin = { kTileWidthHeight/2.0f, kTileWidthHeight/2.0f };
float outerRadius = kTileWidthHeight/2.0f - 20.0f;
float innerRadius = 20.0f;
{
// transparent
SkTDArray<SkRect> circles;
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 5, &circles);
fOriginalBMs[0] = make_bitmap(path, circles, false);
}
{
// opaque
SkTDArray<SkRect> circles;
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 7, &circles);
fOriginalBMs[1] = make_bitmap(path, circles, true);
}
for (bool opaque : { false, true }) {
for (int cs = kJPEG_SkYUVColorSpace; cs <= kLastEnum_SkYUVColorSpace; ++cs) {
PlaneData planes;
extract_planes(fOriginalBMs[opaque], (SkYUVColorSpace) cs, &planes);
for (int format = AYUV_YUVFormat; format <= kLast_YUVFormat; ++format) {
SkBitmap resultBMs[4];
SkYUVAIndex yuvaIndices[4];
create_YUV(planes, (YUVFormat) format, resultBMs, yuvaIndices, opaque);
fImages[opaque][cs][format] = make_yuv_gen_image(fOriginalBMs[opaque].info(),
(YUVFormat) format,
(SkYUVColorSpace) cs,
yuvaIndices,
resultBMs);
}
}
}
}
void onDraw(SkCanvas* canvas) override {
int x = kLabelWidth;
for (int cs = kJPEG_SkYUVColorSpace; cs <= kLastEnum_SkYUVColorSpace; ++cs) {
for (int opaque : { 0, 1 }) {
int y = kLabelHeight;
draw_col_label(canvas, x+kTileWidthHeight/2, cs, opaque);
canvas->drawBitmap(fOriginalBMs[opaque], x, y);
y += kTileWidthHeight + kPad;
for (int format = AYUV_YUVFormat; format <= kLast_YUVFormat; ++format) {
draw_row_label(canvas, y, format);
canvas->drawImage(fImages[opaque][cs][format], x, y);
y += kTileWidthHeight + kPad;
}
x += kTileWidthHeight + kPad;
}
}
}
private:
SkBitmap fOriginalBMs[2];
sk_sp<SkImage> fImages[2][kLastEnum_SkYUVColorSpace+1][kLast_YUVFormat+1];
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new WackyYUVFormatsGM;)
}
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