| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| // This test only works with the GPU backend. |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorFilter.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPixmap.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkTypes.h" |
| #include "include/core/SkYUVAIndex.h" |
| #include "include/gpu/GrBackendSurface.h" |
| #include "include/gpu/GrDirectContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/SkTo.h" |
| #include "src/core/SkMathPriv.h" |
| #include "src/core/SkYUVMath.h" |
| #include "tools/Resources.h" |
| #include "tools/gpu/YUVUtils.h" |
| |
| using sk_gpu_test::YUVABackendReleaseContext; |
| |
| class GrRenderTargetContext; |
| |
| namespace skiagm { |
| class ImageFromYUVTextures : public GpuGM { |
| public: |
| ImageFromYUVTextures() { |
| this->setBGColor(0xFFFFFFFF); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("image_from_yuv_textures"); |
| } |
| |
| SkISize onISize() override { return {1420, 610}; } |
| |
| static SkBitmap CreateBmpAndPlanes(const char* name, SkBitmap yuvaBmps[4]) { |
| SkBitmap bmp; |
| if (!GetResourceAsBitmap(name, &bmp)) { |
| return {}; |
| } |
| auto ii = SkImageInfo::Make(bmp.dimensions(), kRGBA_8888_SkColorType, kPremul_SkAlphaType); |
| |
| SkBitmap rgbaBmp; |
| rgbaBmp.allocPixels(ii); |
| bmp.readPixels(rgbaBmp.pixmap(), 0, 0); |
| |
| SkImageInfo yaInfo = SkImageInfo::Make(rgbaBmp.dimensions(), kAlpha_8_SkColorType, |
| kUnpremul_SkAlphaType); |
| yuvaBmps[0].allocPixels(yaInfo); |
| SkISize uvSize = {rgbaBmp.width()/2, rgbaBmp.height()/2}; |
| SkImageInfo uvInfo = SkImageInfo::Make(uvSize, kAlpha_8_SkColorType, kUnpremul_SkAlphaType); |
| yuvaBmps[1].allocPixels(uvInfo); |
| yuvaBmps[2].allocPixels(uvInfo); |
| yuvaBmps[3].allocPixels(yaInfo); |
| |
| unsigned char* yuvPixels[] = { |
| static_cast<unsigned char*>(yuvaBmps[0].getPixels()), |
| static_cast<unsigned char*>(yuvaBmps[1].getPixels()), |
| static_cast<unsigned char*>(yuvaBmps[2].getPixels()), |
| static_cast<unsigned char*>(yuvaBmps[3].getPixels()), |
| }; |
| |
| float m[20]; |
| SkColorMatrix_RGB2YUV(kJPEG_SkYUVColorSpace, m); |
| // Here we encode using the kJPEG_SkYUVColorSpace (i.e., full-swing Rec 601) even though |
| // we will draw it with all the supported yuv color spaces when converted back to RGB |
| for (int j = 0; j < yaInfo.height(); ++j) { |
| for (int i = 0; i < yaInfo.width(); ++i) { |
| auto rgba = *rgbaBmp.getAddr32(i, j); |
| auto r = (rgba & 0x000000ff) >> 0; |
| auto g = (rgba & 0x0000ff00) >> 8; |
| auto b = (rgba & 0x00ff0000) >> 16; |
| auto a = (rgba & 0xff000000) >> 24; |
| yuvPixels[0][j*yaInfo.width() + i] = SkToU8( |
| sk_float_round2int(m[0]*r + m[1]*g + m[2]*b + m[3]*a + 255*m[4])); |
| yuvPixels[3][j*yaInfo.width() + i] = SkToU8(sk_float_round2int( |
| m[15]*r + m[16]*g + m[17]*b + m[18]*a + 255*m[19])); |
| } |
| } |
| for (int j = 0; j < uvInfo.height(); ++j) { |
| for (int i = 0; i < uvInfo.width(); ++i) { |
| // Average together 4 pixels of RGB. |
| int rgba[] = {0, 0, 0, 0}; |
| for (int y = 0; y < 2; ++y) { |
| for (int x = 0; x < 2; ++x) { |
| auto src = *rgbaBmp.getAddr32(2 * i + x, 2 * j + y); |
| rgba[0] += (src & 0x000000ff) >> 0; |
| rgba[1] += (src & 0x0000ff00) >> 8; |
| rgba[2] += (src & 0x00ff0000) >> 16; |
| rgba[3] += (src & 0xff000000) >> 24; |
| } |
| } |
| for (int c = 0; c < 4; ++c) { |
| rgba[c] /= 4; |
| } |
| int uvIndex = j*uvInfo.width() + i; |
| yuvPixels[1][uvIndex] = SkToU8(sk_float_round2int( |
| m[5]*rgba[0] + m[6]*rgba[1] + m[7]*rgba[2] + m[8]*rgba[3] + 255*m[9])); |
| yuvPixels[2][uvIndex] = SkToU8(sk_float_round2int( |
| m[10]*rgba[0] + m[11]*rgba[1] + m[12]*rgba[2] + m[13]*rgba[3] + 255*m[14])); |
| } |
| } |
| return rgbaBmp; |
| } |
| |
| static bool CreateYUVBackendTextures(GrDirectContext* context, SkBitmap bmps[4], |
| SkYUVAIndex indices[4], |
| YUVABackendReleaseContext* beContext) { |
| for (int i = 0; i < 4; ++i) { |
| GrBackendTexture tmp = context->createBackendTexture( |
| bmps[i].pixmap(), GrRenderable::kNo, GrProtected::kNo, |
| YUVABackendReleaseContext::CreationCompleteProc(i), |
| beContext); |
| if (!tmp.isValid()) { |
| return false; |
| } |
| |
| beContext->set(i, tmp); |
| } |
| |
| for (int i = 0; i < 4; ++i) { |
| auto chanMask = beContext->beTexture(i).getBackendFormat().channelMask(); |
| // We expect the single channel bitmaps to produce single channel textures. |
| SkASSERT(chanMask && SkIsPow2(chanMask)); |
| if (chanMask & kGray_SkColorChannelFlag) { |
| indices[i].fChannel = SkColorChannel::kR; |
| } else { |
| indices[i].fChannel = static_cast<SkColorChannel>(31 - SkCLZ(chanMask)); |
| } |
| indices[i].fIndex = i; |
| } |
| |
| return true; |
| } |
| |
| sk_sp<SkImage> makeYUVAImage(GrDirectContext* context) { |
| auto releaseContext = new YUVABackendReleaseContext(context); |
| SkYUVAIndex indices[4]; |
| |
| if (!CreateYUVBackendTextures(context, fYUVABmps, indices, releaseContext)) { |
| YUVABackendReleaseContext::Unwind(context, releaseContext, false); |
| return nullptr; |
| } |
| |
| return SkImage::MakeFromYUVATextures(context, |
| kJPEG_SkYUVColorSpace, |
| releaseContext->beTextures(), |
| indices, |
| fRGBABmp.dimensions(), |
| kTopLeft_GrSurfaceOrigin, |
| nullptr, |
| YUVABackendReleaseContext::Release, |
| releaseContext); |
| } |
| |
| sk_sp<SkImage> createReferenceImage(GrDirectContext* dContext) { |
| auto planeReleaseContext = new YUVABackendReleaseContext(dContext); |
| SkYUVAIndex indices[4]; |
| |
| if (!CreateYUVBackendTextures(dContext, fYUVABmps, indices, planeReleaseContext)) { |
| YUVABackendReleaseContext::Unwind(dContext, planeReleaseContext, false); |
| return nullptr; |
| } |
| |
| auto rgbaReleaseContext = new YUVABackendReleaseContext(dContext); |
| |
| GrBackendTexture resultTexture = dContext->createBackendTexture( |
| fRGBABmp.dimensions().width(), fRGBABmp.dimensions().height(), |
| kRGBA_8888_SkColorType, SkColors::kTransparent, |
| GrMipmapped::kNo, GrRenderable::kYes, GrProtected::kNo, |
| YUVABackendReleaseContext::CreationCompleteProc(0), |
| rgbaReleaseContext); |
| if (!resultTexture.isValid()) { |
| YUVABackendReleaseContext::Unwind(dContext, planeReleaseContext, false); |
| YUVABackendReleaseContext::Unwind(dContext, rgbaReleaseContext, false); |
| return nullptr; |
| } |
| |
| rgbaReleaseContext->set(0, resultTexture); |
| |
| auto tmp = SkImage::MakeFromYUVATexturesCopyWithExternalBackend( |
| dContext, |
| kJPEG_SkYUVColorSpace, |
| planeReleaseContext->beTextures(), |
| indices, |
| fRGBABmp.dimensions(), |
| kTopLeft_GrSurfaceOrigin, |
| resultTexture, |
| nullptr, |
| YUVABackendReleaseContext::Release, |
| rgbaReleaseContext); |
| YUVABackendReleaseContext::Unwind(dContext, planeReleaseContext, true); |
| return tmp; |
| } |
| |
| DrawResult onGpuSetup(GrDirectContext* context, SkString* errorMsg) override { |
| if (!context || context->abandoned()) { |
| return DrawResult::kSkip; |
| } |
| |
| fRGBABmp = CreateBmpAndPlanes("images/mandrill_32.png", fYUVABmps); |
| |
| // We make a version of this image for each draw because, if any draw flattens it to |
| // RGBA, then all subsequent draws would use the RGBA texture. |
| for (int i = 0; i < kNumImages; ++i) { |
| fYUVAImages[i] = this->makeYUVAImage(context); |
| if (!fYUVAImages[i]) { |
| *errorMsg = "Couldn't create src YUVA image."; |
| return DrawResult::kFail; |
| } |
| } |
| |
| fReferenceImage = this->createReferenceImage(context); |
| if (!fReferenceImage) { |
| *errorMsg = "Couldn't create reference YUVA image."; |
| return DrawResult::kFail; |
| } |
| |
| // Some backends (e.g., Vulkan) require all work be completed for backend textures |
| // before they are deleted. Since we don't know when we'll next have access to a |
| // direct context, flush all the work now. |
| context->flush(); |
| context->submit(true); |
| |
| return DrawResult::kOk; |
| } |
| |
| void onGpuTeardown() override { |
| for (sk_sp<SkImage>& image : fYUVAImages) { |
| image.reset(); |
| } |
| fReferenceImage.reset(); |
| } |
| |
| SkImage* getYUVAImage(int index) { |
| SkASSERT(index >= 0 && index < kNumImages); |
| return fYUVAImages[index].get(); |
| } |
| |
| void onDraw(GrRecordingContext*, GrRenderTargetContext*, SkCanvas* canvas) override { |
| auto draw_image = [canvas](SkImage* image, SkFilterQuality fq) -> SkSize { |
| if (!image) { |
| return {0, 0}; |
| } |
| SkPaint paint; |
| paint.setFilterQuality(fq); |
| canvas->drawImage(image, 0, 0, &paint); |
| return {SkIntToScalar(image->width()), SkIntToScalar(image->height())}; |
| }; |
| |
| auto draw_image_rect = [canvas](SkImage* image, SkFilterQuality fq) -> SkSize { |
| if (!image) { |
| return {0, 0}; |
| } |
| SkPaint paint; |
| paint.setFilterQuality(fq); |
| auto subset = SkRect::Make(image->dimensions()); |
| subset.inset(subset.width() * .05f, subset.height() * .1f); |
| auto dst = SkRect::MakeWH(subset.width(), subset.height()); |
| canvas->drawImageRect(image, subset, dst, &paint); |
| return {dst.width(), dst.height()}; |
| }; |
| |
| auto draw_image_shader = [canvas](SkImage* image, SkFilterQuality fq) -> SkSize { |
| if (!image) { |
| return {0, 0}; |
| } |
| SkMatrix m; |
| m.setRotate(45, image->width()/2.f, image->height()/2.f); |
| auto shader = image->makeShader(SkTileMode::kMirror, SkTileMode::kDecal, m); |
| SkPaint paint; |
| paint.setFilterQuality(fq); |
| paint.setShader(std::move(shader)); |
| auto rect = SkRect::MakeWH(image->width() * 1.3f, image->height()); |
| canvas->drawRect(rect, paint); |
| return {rect.width(), rect.height()}; |
| }; |
| |
| canvas->translate(kPad, kPad); |
| int imageIndex = 0; |
| using DrawSig = SkSize(SkImage* image, SkFilterQuality fq); |
| using DF = std::function<DrawSig>; |
| for (const auto& draw : {DF(draw_image), DF(draw_image_rect), DF(draw_image_shader)}) { |
| for (auto scale : {1.f, 4.f, 0.75f}) { |
| SkScalar h = 0; |
| canvas->save(); |
| for (auto fq : {kNone_SkFilterQuality, kLow_SkFilterQuality, |
| kMedium_SkFilterQuality, kHigh_SkFilterQuality}) { |
| canvas->save(); |
| canvas->scale(scale, scale); |
| auto s1 = draw(this->getYUVAImage(imageIndex++), fq); |
| canvas->restore(); |
| canvas->translate(kPad + SkScalarCeilToScalar(scale*s1.width()), 0); |
| canvas->save(); |
| canvas->scale(scale, scale); |
| auto s2 = draw(fReferenceImage.get(), fq); |
| canvas->restore(); |
| canvas->translate(kPad + SkScalarCeilToScalar(scale*s2.width()), 0); |
| h = std::max({h, s1.height(), s2.height()}); |
| } |
| canvas->restore(); |
| canvas->translate(0, kPad + SkScalarCeilToScalar(scale*h)); |
| } |
| } |
| } |
| |
| private: |
| SkBitmap fRGBABmp; // TODO: oddly, it looks like this could just be an SkISize |
| SkBitmap fYUVABmps[4]; |
| |
| // 3 draws x 3 scales x 4 filter qualities |
| static constexpr int kNumImages = 3 * 3 * 4; |
| sk_sp<SkImage> fYUVAImages[kNumImages]; |
| sk_sp<SkImage> fReferenceImage; |
| |
| static constexpr SkScalar kPad = 10.0f; |
| |
| using INHERITED = GM; |
| }; |
| |
| DEF_GM(return new ImageFromYUVTextures;) |
| } // namespace skiagm |