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skia2/gm/wacky_yuv_formats.cpp
Brian Salomon f2580c0c76 Avoid crash in wacky_yuv GMs with --preAbandonGpuContext 
TBR: egdaniel@google.com

Change-Id: Ia4e0c977fab68e56e3c43fe1b6e0796923d49f77
Reviewed-on: https://skia-review.googlesource.com/c/188022
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2019-01-30 15:32:51 +00:00

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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 "SkPath.h"
#include "SkTextUtils.h"
#include "SkYUVAIndex.h"
#if SK_SUPPORT_GPU
#include "GrBackendSurface.h"
#include "GrContextPriv.h"
#include "GrGpu.h"
#include "SkImage_GpuYUVA.h"
#endif
static const int kTileWidthHeight = 128;
static const int kLabelWidth = 64;
static const int kLabelHeight = 32;
static const int kPad = 1;
enum YUVFormat {
// 4:4:4 formats, 32 bpp
kAYUV_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) {
const SkColor kGreen = sk_tool_utils::color_to_565(SkColorSetARGB(0xFF, 178, 240, 104));
const SkColor kBlue = sk_tool_utils::color_to_565(SkColorSetARGB(0xFF, 173, 167, 252));
const SkColor kYellow = sk_tool_utils::color_to_565(SkColorSetARGB(0xFF, 255, 221, 117));
SkImageInfo ii = SkImageInfo::MakeN32(kTileWidthHeight, kTileWidthHeight, 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 convert_rgba_to_yuva_601_shared(SkColor col, uint8_t yuv[4],
uint8_t off, uint8_t range) {
static const float Kr = 0.299f;
static const float Kb = 0.114f;
static const float Kg = 1.0f - Kr - Kb;
float r = SkColorGetR(col) / 255.0f;
float g = SkColorGetG(col) / 255.0f;
float b = SkColorGetB(col) / 255.0f;
float Ey = Kr * r + Kg * g + Kb * b;
float Ecb = (b - Ey) / 1.402f;
float Ecr = (r - Ey) / 1.772;
yuv[0] = SkScalarRoundToInt( range * Ey + off );
yuv[1] = SkScalarRoundToInt( 224 * Ecb + 128 );
yuv[2] = SkScalarRoundToInt( 224 * Ecr + 128 );
yuv[3] = SkColorGetA(col);
}
static void convert_rgba_to_yuva_jpeg(SkColor col, uint8_t yuv[4]) {
// full swing from 0..255
convert_rgba_to_yuva_601_shared(col, yuv, 0, 255);
}
static void convert_rgba_to_yuva_601(SkColor col, uint8_t yuv[4]) {
// partial swing from 16..235
convert_rgba_to_yuva_601_shared(col, yuv, 16, 219);
}
static void convert_rgba_to_yuva_709(SkColor col, uint8_t yuv[4]) {
static const float Kr = 0.2126f;
static const float Kb = 0.0722f;
static const float Kg = 1.0f - Kr - Kb;
float r = SkColorGetR(col) / 255.0f;
float g = SkColorGetG(col) / 255.0f;
float b = SkColorGetB(col) / 255.0f;
float Ey = Kr * r + Kg * g + Kb * b;
float Ecb = (b - Ey) / 1.8556f;
float Ecr = (r - Ey) / 1.5748;
yuv[0] = SkScalarRoundToInt( 219 * Ey + 16 );
yuv[1] = SkScalarRoundToInt( 224 * Ecb + 128 );
yuv[2] = SkScalarRoundToInt( 224 * Ecr + 128 );
yuv[3] = SkColorGetA(col);
}
static SkPMColor convert_yuva_to_rgba_jpeg(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
int c = y;
int d = u - 128;
int e = v - 128;
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.0f * c + 1.402f * e ),
0, 255);
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.0f * c - (0.344136f * d) - (0.714136f * e)),
0, 255);
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.0f * c + 1.773f * d ),
0, 255);
return SkPremultiplyARGBInline(a, r, g, b);
}
static SkPMColor convert_yuva_to_rgba_601(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
int c = y - 16;
int d = u - 128;
int e = v - 128;
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.164f * c + 1.596f * e ), 0, 255);
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.164f * c - (0.391f * d) - (0.813f * e)), 0, 255);
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.164f * c + 2.018f * d ), 0, 255);
return SkPremultiplyARGBInline(a, r, g, b);
}
static SkPMColor convert_yuva_to_rgba_709(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
int c = y - 16;
int d = u - 128;
int e = v - 128;
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.164f * c + 1.793f * e ), 0, 255);
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.164f * c - (0.213f * d) - (0.533f * e)), 0, 255);
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.164f * c + 2.112f * d ), 0, 255);
return SkPremultiplyARGBInline(a, r, g, b);
}
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));
for (int y = 0; y < bm.height(); ++y) {
for (int x = 0; x < bm.width(); ++x) {
SkColor col = bm.getColor(x, y);
uint8_t yuva[4];
if (kJPEG_SkYUVColorSpace == yuvColorSpace) {
convert_rgba_to_yuva_jpeg(col, yuva);
} else if (kRec601_SkYUVColorSpace == yuvColorSpace) {
convert_rgba_to_yuva_601(col, yuva);
} else {
SkASSERT(kRec709_SkYUVColorSpace == yuvColorSpace);
convert_rgba_to_yuva_709(col, yuva);
}
*planes->fYFull.getAddr8(x, y) = yuva[0];
*planes->fUFull.getAddr8(x, y) = yuva[1];
*planes->fVFull.getAddr8(x, y) = yuva[2];
*planes->fAFull.getAddr8(x, y) = yuva[3];
}
}
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) = vAccum / 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 kAYUV_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!
// V and Y swapped to match RGBA layout
*yuvaFull.getAddr32(x, y) = SkColorSetARGB(A, V, U, Y);
}
}
resultBMs[nextLayer++] = yuvaFull;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = SkColorChannel::kR;
yuvaIndices[1].fIndex = 0;
yuvaIndices[1].fChannel = SkColorChannel::kG;
yuvaIndices[2].fIndex = 0;
yuvaIndices[2].fChannel = SkColorChannel::kB;
yuvaIndices[3].fIndex = 0;
yuvaIndices[3].fChannel = SkColorChannel::kA;
break;
}
case kNV12_YUVFormat: {
SkBitmap uvQuarter;
// There isn't a RG color type. Approx w/ RGBA.
uvQuarter.allocPixels(SkImageInfo::Make(planes.fYFull.width()/2,
planes.fYFull.height()/2,
kRGBA_8888_SkColorType,
kUnpremul_SkAlphaType));
for (int y = 0; y < planes.fYFull.height()/2; ++y) {
for (int x = 0; x < planes.fYFull.width()/2; ++x) {
uint8_t U = *planes.fUQuarter.getAddr8(x, y);
uint8_t V = *planes.fVQuarter.getAddr8(x, y);
// NOT premul!
// U and 0 swapped to match RGBA layout
*uvQuarter.getAddr32(x, y) = SkColorSetARGB(0, 0, V, U);
}
}
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = uvQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = SkColorChannel::kA;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = SkColorChannel::kR;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = SkColorChannel::kG;
break;
}
case kNV21_YUVFormat: {
SkBitmap vuQuarter;
// There isn't a RG color type. Approx w/ RGBA.
vuQuarter.allocPixels(SkImageInfo::Make(planes.fYFull.width()/2,
planes.fYFull.height()/2,
kRGBA_8888_SkColorType,
kUnpremul_SkAlphaType));
for (int y = 0; y < planes.fYFull.height()/2; ++y) {
for (int x = 0; x < planes.fYFull.width()/2; ++x) {
uint8_t U = *planes.fUQuarter.getAddr8(x, y);
uint8_t V = *planes.fVQuarter.getAddr8(x, y);
// NOT premul!
// V and 0 swapped to match RGBA layout
*vuQuarter.getAddr32(x, y) = SkColorSetARGB(0, 0, U, V);
}
}
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = vuQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = SkColorChannel::kA;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = SkColorChannel::kG;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = SkColorChannel::kR;
break;
}
case kI420_YUVFormat:
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = planes.fUQuarter;
resultBMs[nextLayer++] = planes.fVQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = SkColorChannel::kA;
yuvaIndices[1].fIndex = 1;
yuvaIndices[1].fChannel = SkColorChannel::kA;
yuvaIndices[2].fIndex = 2;
yuvaIndices[2].fChannel = SkColorChannel::kA;
break;
case kYV12_YUVFormat:
resultBMs[nextLayer++] = planes.fYFull;
resultBMs[nextLayer++] = planes.fVQuarter;
resultBMs[nextLayer++] = planes.fUQuarter;
yuvaIndices[0].fIndex = 0;
yuvaIndices[0].fChannel = SkColorChannel::kA;
yuvaIndices[1].fIndex = 2;
yuvaIndices[1].fChannel = SkColorChannel::kA;
yuvaIndices[2].fIndex = 1;
yuvaIndices[2].fChannel = SkColorChannel::kA;
break;
}
if (kAYUV_YUVFormat != yuvFormat) {
if (opaque) {
yuvaIndices[3].fIndex = -1;
} else {
resultBMs[nextLayer] = planes.fAFull;
yuvaIndices[3].fIndex = nextLayer;
yuvaIndices[3].fChannel = SkColorChannel::kA;
}
}
}
static uint8_t look_up(float x1, float y1, const SkBitmap& bm, SkColorChannel channel) {
uint8_t result;
int x = SkScalarFloorToInt(x1 * bm.width());
int y = SkScalarFloorToInt(y1 * bm.height());
if (kAlpha_8_SkColorType == bm.colorType()) {
SkASSERT(SkColorChannel::kA == channel);
result = *bm.getAddr8(x, y);
} else {
SkASSERT(kRGBA_8888_SkColorType == bm.colorType());
switch (channel) {
case SkColorChannel::kR:
result = SkColorGetR(bm.getColor(x, y));
break;
case SkColorChannel::kG:
result = SkColorGetG(bm.getColor(x, y));
break;
case SkColorChannel::kB:
result = SkColorGetB(bm.getColor(x, y));
break;
case SkColorChannel::kA:
result = SkColorGetA(bm.getColor(x, y));
break;
}
}
return result;
}
class YUVGenerator : public SkImageGenerator {
public:
YUVGenerator(const SkImageInfo& ii,
SkYUVColorSpace yuvColorSpace,
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
SkBitmap bitmaps[SkYUVASizeInfo::kMaxCount])
: SkImageGenerator(ii)
, fYUVColorSpace(yuvColorSpace) {
memcpy(fYUVAIndices, yuvaIndices, sizeof(fYUVAIndices));
SkAssertResult(SkYUVAIndex::AreValidIndices(fYUVAIndices, &fNumBitmaps));
SkASSERT(fNumBitmaps > 0 && fNumBitmaps <= SkYUVASizeInfo::kMaxCount);
for (int i = 0; i < fNumBitmaps; ++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(this->getInfo());
for (int y = 0; y < info.height(); ++y) {
for (int x = 0; x < info.width(); ++x) {
float x1 = (x + 0.5f) / info.width();
float y1 = (y + 0.5f) / info.height();
uint8_t Y = look_up(x1, y1,
fYUVBitmaps[fYUVAIndices[0].fIndex],
fYUVAIndices[0].fChannel);
uint8_t U = look_up(x1, y1,
fYUVBitmaps[fYUVAIndices[1].fIndex],
fYUVAIndices[1].fChannel);
uint8_t V = look_up(x1, y1,
fYUVBitmaps[fYUVAIndices[2].fIndex],
fYUVAIndices[2].fChannel);
uint8_t A = 255;
if (fYUVAIndices[3].fIndex >= 0) {
A = look_up(x1, y1,
fYUVBitmaps[fYUVAIndices[3].fIndex],
fYUVAIndices[3].fChannel);
}
// Making premul here.
switch (fYUVColorSpace) {
case kJPEG_SkYUVColorSpace:
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_jpeg(Y, U, V, A);
break;
case kRec601_SkYUVColorSpace:
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_601(Y, U, V, A);
break;
case kRec709_SkYUVColorSpace:
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_709(Y, U, V, A);
break;
}
}
}
}
return fFlattened.readPixels(info, pixels, rowBytes, 0, 0);
}
bool onQueryYUVA8(SkYUVASizeInfo* size,
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
SkYUVColorSpace* yuvColorSpace) const override {
memcpy(yuvaIndices, fYUVAIndices, sizeof(fYUVAIndices));
*yuvColorSpace = fYUVColorSpace;
int i = 0;
for ( ; i < fNumBitmaps; ++i) {
size->fSizes[i].fWidth = fYUVBitmaps[i].width();
size->fSizes[i].fHeight = fYUVBitmaps[i].height();
size->fWidthBytes[i] = fYUVBitmaps[i].rowBytes();
}
for ( ; i < SkYUVASizeInfo::kMaxCount; ++i) {
size->fSizes[i].fWidth = 0;
size->fSizes[i].fHeight = 0;
size->fWidthBytes[i] = 0;
}
return true;
}
bool onGetYUVA8Planes(const SkYUVASizeInfo&, const SkYUVAIndex[SkYUVAIndex::kIndexCount],
void* planes[SkYUVASizeInfo::kMaxCount]) override {
for (int i = 0; i < fNumBitmaps; ++i) {
planes[i] = fYUVBitmaps[i].getPixels();
}
return true;
}
private:
SkYUVColorSpace fYUVColorSpace;
SkYUVAIndex fYUVAIndices[SkYUVAIndex::kIndexCount];
int fNumBitmaps;
SkBitmap fYUVBitmaps[SkYUVASizeInfo::kMaxCount];
SkBitmap fFlattened;
};
static sk_sp<SkImage> make_yuv_gen_image(const SkImageInfo& ii,
SkYUVColorSpace yuvColorSpace,
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
SkBitmap bitmaps[]) {
std::unique_ptr<SkImageGenerator> gen(new YUVGenerator(ii, 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 paint;
SkFont font(sk_tool_utils::create_portable_typeface(nullptr, SkFontStyle::Bold()), 16);
font.setEdging(SkFont::Edging::kAlias);
SkRect textRect;
SkString colLabel;
colLabel.printf("%s", kYUVColorSpaceNames[yuvColorSpace]);
font.measureText(colLabel.c_str(), colLabel.size(), kUTF8_SkTextEncoding, &textRect);
int y = textRect.height();
SkTextUtils::DrawString(canvas, colLabel.c_str(), x, y, font, paint, SkTextUtils::kCenter_Align);
colLabel.printf("%s", opaque ? "Opaque" : "Transparent");
font.measureText(colLabel.c_str(), colLabel.size(), kUTF8_SkTextEncoding, &textRect);
y += textRect.height();
SkTextUtils::DrawString(canvas, colLabel.c_str(), x, y, font, paint, SkTextUtils::kCenter_Align);
}
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 paint;
SkFont font(sk_tool_utils::create_portable_typeface(nullptr, SkFontStyle::Bold()), 16);
font.setEdging(SkFont::Edging::kAlias);
SkRect textRect;
SkString rowLabel;
rowLabel.printf("%s", kYUVFormatNames[yuvFormat]);
font.measureText(rowLabel.c_str(), rowLabel.size(), kUTF8_SkTextEncoding, &textRect);
y += kTileWidthHeight/2 + textRect.height()/2;
canvas->drawString(rowLabel, 0, y, font, paint);
}
static GrBackendTexture create_yuva_texture(GrGpu* gpu, const SkBitmap& bm,
SkYUVAIndex yuvaIndices[4], int texIndex) {
SkASSERT(texIndex >= 0 && texIndex <= 3);
int channelCount = 0;
for (int i = 0; i < SkYUVAIndex::kIndexCount; ++i) {
if (yuvaIndices[i].fIndex == texIndex) {
++channelCount;
}
}
// Need to create an RG texture for two-channel planes
GrBackendTexture tex;
if (2 == channelCount) {
SkASSERT(kRGBA_8888_SkColorType == bm.colorType());
SkAutoTMalloc<char> pixels(2 * bm.width()*bm.height());
char* currPixel = pixels;
for (int y = 0; y < bm.height(); ++y) {
for (int x = 0; x < bm.width(); ++x) {
SkColor color = bm.getColor(x, y);
currPixel[0] = SkColorGetR(color);
currPixel[1] = SkColorGetG(color);
currPixel += 2;
}
}
tex = gpu->createTestingOnlyBackendTexture(
pixels,
bm.width(),
bm.height(),
GrColorType::kRG_88,
false,
GrMipMapped::kNo,
2*bm.width());
}
if (!tex.isValid()) {
tex = gpu->createTestingOnlyBackendTexture(
bm.getPixels(),
bm.width(),
bm.height(),
bm.colorType(),
false,
GrMipMapped::kNo,
bm.rowBytes());
}
return tex;
}
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(bool useTargetColorSpace) : fUseTargetColorSpace(useTargetColorSpace) {
this->setBGColor(0xFFCCCCCC);
}
protected:
SkString onShortName() override {
SkString name("wacky_yuv_formats");
if (fUseTargetColorSpace) {
name += "_cs";
}
return name;
}
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);
}
if (fUseTargetColorSpace) {
fTargetColorSpace = SkColorSpace::MakeSRGB()->makeColorSpin();
}
}
void createImages(GrContext* context) {
int counter = 0;
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 = kAYUV_YUVFormat; format <= kLast_YUVFormat; ++format) {
SkBitmap resultBMs[4];
SkYUVAIndex yuvaIndices[4];
create_YUV(planes, (YUVFormat) format, resultBMs, yuvaIndices, opaque);
int numTextures;
if (!SkYUVAIndex::AreValidIndices(yuvaIndices, &numTextures)) {
continue;
}
if (context) {
if (context->abandoned()) {
return;
}
GrGpu* gpu = context->contextPriv().getGpu();
if (!gpu) {
return;
}
GrBackendTexture yuvaTextures[4];
SkPixmap yuvaPixmaps[4];
for (int i = 0; i < numTextures; ++i) {
yuvaTextures[i] = create_yuva_texture(gpu, resultBMs[i],
yuvaIndices, i);
if (yuvaTextures[i].isValid()) {
fBackendTextures.push_back(yuvaTextures[i]);
}
yuvaPixmaps[i] = resultBMs[i].pixmap();
}
int counterMod = counter % 3;
switch (counterMod) {
case 0:
fImages[opaque][cs][format] = SkImage::MakeFromYUVATexturesCopy(
context,
(SkYUVColorSpace)cs,
yuvaTextures,
yuvaIndices,
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
kTopLeft_GrSurfaceOrigin);
break;
case 1:
fImages[opaque][cs][format] = SkImage::MakeFromYUVATextures(
context,
(SkYUVColorSpace)cs,
yuvaTextures,
yuvaIndices,
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
kTopLeft_GrSurfaceOrigin);
break;
case 2:
default:
fImages[opaque][cs][format] = SkImage::MakeFromYUVAPixmaps(
context,
(SkYUVColorSpace)cs,
yuvaPixmaps,
yuvaIndices,
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
kTopLeft_GrSurfaceOrigin, true);
break;
}
++counter;
} else {
fImages[opaque][cs][format] = make_yuv_gen_image(
fOriginalBMs[opaque].info(),
(SkYUVColorSpace) cs,
yuvaIndices,
resultBMs);
}
}
}
}
}
void onDraw(SkCanvas* canvas) override {
this->createImages(canvas->getGrContext());
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 = kAYUV_YUVFormat; format <= kLast_YUVFormat; ++format) {
draw_row_label(canvas, y, format);
if (fUseTargetColorSpace && fImages[opaque][cs][format]) {
sk_sp<SkImage> csImage =
fImages[opaque][cs][format]->makeColorSpace(fTargetColorSpace);
canvas->drawImage(csImage, x, y);
} else {
canvas->drawImage(fImages[opaque][cs][format], x, y);
}
y += kTileWidthHeight + kPad;
}
x += kTileWidthHeight + kPad;
}
}
if (auto context = canvas->getGrContext()) {
if (!context->abandoned()) {
context->flush();
GrGpu* gpu = context->contextPriv().getGpu();
SkASSERT(gpu);
gpu->testingOnly_flushGpuAndSync();
for (const auto& tex : fBackendTextures) {
gpu->deleteTestingOnlyBackendTexture(tex);
}
fBackendTextures.reset();
}
}
SkASSERT(!fBackendTextures.count());
}
private:
SkBitmap fOriginalBMs[2];
sk_sp<SkImage> fImages[2][kLastEnum_SkYUVColorSpace + 1][kLast_YUVFormat + 1];
SkTArray<GrBackendTexture> fBackendTextures;
bool fUseTargetColorSpace;
sk_sp<SkColorSpace> fTargetColorSpace;
typedef GM INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new WackyYUVFormatsGM(false);)
DEF_GM(return new WackyYUVFormatsGM(true);)
}
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