| /* |
| * 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()); |
| } else { |
| 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); |
| 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) { |
| 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; |
| } |
| } |
| } |
| |
| private: |
| SkBitmap fOriginalBMs[2]; |
| sk_sp<SkImage> fImages[2][kLastEnum_SkYUVColorSpace+1][kLast_YUVFormat+1]; |
| bool fUseTargetColorSpace; |
| sk_sp<SkColorSpace> fTargetColorSpace; |
| |
| typedef GM INHERITED; |
| }; |
| |
| ////////////////////////////////////////////////////////////////////////////// |
| |
| DEF_GM(return new WackyYUVFormatsGM(false);) |
| DEF_GM(return new WackyYUVFormatsGM(true);) |
| } |
