| /* |
| * Copyright 2012 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkBitmapCache.h" |
| #include "SkImage_Gpu.h" |
| #include "GrCaps.h" |
| #include "GrContext.h" |
| #include "GrDrawContext.h" |
| #include "GrTextureMaker.h" |
| #include "effects/GrYUVtoRGBEffect.h" |
| #include "SkCanvas.h" |
| #include "SkGpuDevice.h" |
| #include "SkGrPriv.h" |
| #include "SkPixelRef.h" |
| |
| SkImage_Gpu::SkImage_Gpu(int w, int h, uint32_t uniqueID, SkAlphaType at, GrTexture* tex, |
| SkSurface::Budgeted budgeted) |
| : INHERITED(w, h, uniqueID, nullptr) |
| , fTexture(SkRef(tex)) |
| , fAlphaType(at) |
| , fBudgeted(budgeted) |
| , fAddedRasterVersionToCache(false) |
| {} |
| |
| SkImage_Gpu::~SkImage_Gpu() { |
| if (fAddedRasterVersionToCache.load()) { |
| SkNotifyBitmapGenIDIsStale(this->uniqueID()); |
| } |
| } |
| |
| extern void SkTextureImageApplyBudgetedDecision(SkImage* image) { |
| if (as_IB(image)->getTexture()) { |
| ((SkImage_Gpu*)image)->applyBudgetDecision(); |
| } |
| } |
| |
| bool SkImage_Gpu::getROPixels(SkBitmap* dst) const { |
| if (SkBitmapCache::Find(this->uniqueID(), dst)) { |
| SkASSERT(dst->getGenerationID() == this->uniqueID()); |
| SkASSERT(dst->isImmutable()); |
| SkASSERT(dst->getPixels()); |
| return true; |
| } |
| |
| SkAlphaType at = this->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType; |
| if (!dst->tryAllocPixels(SkImageInfo::MakeN32(this->width(), this->height(), at))) { |
| return false; |
| } |
| if (!fTexture->readPixels(0, 0, dst->width(), dst->height(), kSkia8888_GrPixelConfig, |
| dst->getPixels(), dst->rowBytes())) { |
| return false; |
| } |
| |
| dst->pixelRef()->setImmutableWithID(this->uniqueID()); |
| SkBitmapCache::Add(this->uniqueID(), *dst); |
| fAddedRasterVersionToCache.store(true); |
| return true; |
| } |
| |
| static void make_raw_texture_stretched_key(uint32_t imageID, const SkGrStretch& stretch, |
| GrUniqueKey* stretchedKey) { |
| SkASSERT(SkGrStretch::kNone_Type != stretch.fType); |
| |
| uint32_t width = SkToU16(stretch.fWidth); |
| uint32_t height = SkToU16(stretch.fHeight); |
| |
| static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain(); |
| GrUniqueKey::Builder builder(stretchedKey, kDomain, 3); |
| builder[0] = imageID; |
| builder[1] = stretch.fType; |
| builder[2] = width | (height << 16); |
| builder.finish(); |
| } |
| |
| class Texture_GrTextureMaker : public GrTextureMaker { |
| public: |
| Texture_GrTextureMaker(const SkImage* image, GrTexture* unstretched) |
| : INHERITED(image->width(), image->height()) |
| , fImage(image) |
| , fUnstretched(unstretched) |
| {} |
| |
| protected: |
| GrTexture* onRefUnstretchedTexture(GrContext* ctx) override { |
| return SkRef(fUnstretched); |
| } |
| |
| bool onMakeStretchedKey(const SkGrStretch& stretch, GrUniqueKey* stretchedKey) override { |
| make_raw_texture_stretched_key(fImage->uniqueID(), stretch, stretchedKey); |
| return stretchedKey->isValid(); |
| } |
| |
| void onNotifyStretchCached(const GrUniqueKey& stretchedKey) override { |
| as_IB(fImage)->notifyAddedToCache(); |
| } |
| |
| bool onGetROBitmap(SkBitmap* bitmap) override { |
| return as_IB(fImage)->getROPixels(bitmap); |
| } |
| |
| private: |
| const SkImage* fImage; |
| GrTexture* fUnstretched; |
| |
| typedef GrTextureMaker INHERITED; |
| }; |
| |
| GrTexture* SkImage_Gpu::asTextureRef(GrContext* ctx, SkImageUsageType usage) const { |
| return Texture_GrTextureMaker(this, fTexture).refCachedTexture(ctx, usage); |
| } |
| |
| bool SkImage_Gpu::isOpaque() const { |
| return GrPixelConfigIsOpaque(fTexture->config()) || fAlphaType == kOpaque_SkAlphaType; |
| } |
| |
| static void apply_premul(const SkImageInfo& info, void* pixels, size_t rowBytes) { |
| switch (info.colorType()) { |
| case kRGBA_8888_SkColorType: |
| case kBGRA_8888_SkColorType: |
| break; |
| default: |
| return; // nothing to do |
| } |
| |
| // SkColor is not necesarily RGBA or BGRA, but it is one of them on little-endian, |
| // and in either case, the alpha-byte is always in the same place, so we can safely call |
| // SkPreMultiplyColor() |
| // |
| SkColor* row = (SkColor*)pixels; |
| for (int y = 0; y < info.height(); ++y) { |
| for (int x = 0; x < info.width(); ++x) { |
| row[x] = SkPreMultiplyColor(row[x]); |
| } |
| } |
| } |
| |
| bool SkImage_Gpu::onReadPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| int srcX, int srcY) const { |
| GrPixelConfig config = SkImageInfo2GrPixelConfig(info.colorType(), info.alphaType(), |
| info.profileType()); |
| uint32_t flags = 0; |
| if (kUnpremul_SkAlphaType == info.alphaType() && kPremul_SkAlphaType == fAlphaType) { |
| // let the GPU perform this transformation for us |
| flags = GrContext::kUnpremul_PixelOpsFlag; |
| } |
| if (!fTexture->readPixels(srcX, srcY, info.width(), info.height(), config, |
| pixels, rowBytes, flags)) { |
| return false; |
| } |
| // do we have to manually fix-up the alpha channel? |
| // src dst |
| // unpremul premul fix manually |
| // premul unpremul done by kUnpremul_PixelOpsFlag |
| // all other combos need to change. |
| // |
| // Should this be handled by Ganesh? todo:? |
| // |
| if (kPremul_SkAlphaType == info.alphaType() && kUnpremul_SkAlphaType == fAlphaType) { |
| apply_premul(info, pixels, rowBytes); |
| } |
| return true; |
| } |
| |
| SkImage* SkImage_Gpu::onNewSubset(const SkIRect& subset) const { |
| GrContext* ctx = fTexture->getContext(); |
| GrSurfaceDesc desc = fTexture->desc(); |
| desc.fWidth = subset.width(); |
| desc.fHeight = subset.height(); |
| |
| GrTexture* subTx = ctx->textureProvider()->createTexture(desc, |
| SkSurface::kYes_Budgeted == fBudgeted); |
| if (!subTx) { |
| return nullptr; |
| } |
| ctx->copySurface(subTx, fTexture, subset, SkIPoint::Make(0, 0)); |
| return new SkImage_Gpu(desc.fWidth, desc.fHeight, kNeedNewImageUniqueID, fAlphaType, subTx, |
| fBudgeted); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static SkImage* new_wrapped_texture_common(GrContext* ctx, const GrBackendTextureDesc& desc, |
| SkAlphaType at, GrWrapOwnership ownership, |
| SkImage::TextureReleaseProc releaseProc, |
| SkImage::ReleaseContext releaseCtx) { |
| if (desc.fWidth <= 0 || desc.fHeight <= 0) { |
| return nullptr; |
| } |
| SkAutoTUnref<GrTexture> tex(ctx->textureProvider()->wrapBackendTexture(desc, ownership)); |
| if (!tex) { |
| return nullptr; |
| } |
| if (releaseProc) { |
| tex->setRelease(releaseProc, releaseCtx); |
| } |
| |
| const SkSurface::Budgeted budgeted = SkSurface::kNo_Budgeted; |
| return new SkImage_Gpu(desc.fWidth, desc.fHeight, kNeedNewImageUniqueID, at, tex, budgeted); |
| } |
| |
| SkImage* SkImage::NewFromTexture(GrContext* ctx, const GrBackendTextureDesc& desc, SkAlphaType at, |
| TextureReleaseProc releaseP, ReleaseContext releaseC) { |
| return new_wrapped_texture_common(ctx, desc, at, kBorrow_GrWrapOwnership, releaseP, releaseC); |
| } |
| |
| SkImage* SkImage::NewFromAdoptedTexture(GrContext* ctx, const GrBackendTextureDesc& desc, |
| SkAlphaType at) { |
| return new_wrapped_texture_common(ctx, desc, at, kAdopt_GrWrapOwnership, nullptr, nullptr); |
| } |
| |
| SkImage* SkImage::NewFromTextureCopy(GrContext* ctx, const GrBackendTextureDesc& desc, |
| SkAlphaType at) { |
| if (desc.fWidth <= 0 || desc.fHeight <= 0) { |
| return nullptr; |
| } |
| |
| SkAutoTUnref<GrTexture> src(ctx->textureProvider()->wrapBackendTexture( |
| desc, kBorrow_GrWrapOwnership)); |
| if (!src) { |
| return nullptr; |
| } |
| |
| const bool isBudgeted = true; |
| SkAutoTUnref<GrTexture> dst(GrDeepCopyTexture(src, isBudgeted)); |
| if (!dst) { |
| return nullptr; |
| } |
| |
| const SkSurface::Budgeted budgeted = SkSurface::kYes_Budgeted; |
| return new SkImage_Gpu(desc.fWidth, desc.fHeight, kNeedNewImageUniqueID, at, dst, |
| budgeted); |
| } |
| |
| SkImage* SkImage::NewFromYUVTexturesCopy(GrContext* ctx , SkYUVColorSpace colorSpace, |
| const GrBackendObject yuvTextureHandles[3], |
| const SkISize yuvSizes[3], |
| GrSurfaceOrigin origin) { |
| const SkSurface::Budgeted budgeted = SkSurface::kYes_Budgeted; |
| |
| if (yuvSizes[0].fWidth <= 0 || yuvSizes[0].fHeight <= 0 || |
| yuvSizes[1].fWidth <= 0 || yuvSizes[1].fHeight <= 0 || |
| yuvSizes[2].fWidth <= 0 || yuvSizes[2].fHeight <= 0) { |
| return nullptr; |
| } |
| static const GrPixelConfig kConfig = kAlpha_8_GrPixelConfig; |
| GrBackendTextureDesc yDesc; |
| yDesc.fConfig = kConfig; |
| yDesc.fOrigin = origin; |
| yDesc.fSampleCnt = 0; |
| yDesc.fTextureHandle = yuvTextureHandles[0]; |
| yDesc.fWidth = yuvSizes[0].fWidth; |
| yDesc.fHeight = yuvSizes[0].fHeight; |
| |
| GrBackendTextureDesc uDesc; |
| uDesc.fConfig = kConfig; |
| uDesc.fOrigin = origin; |
| uDesc.fSampleCnt = 0; |
| uDesc.fTextureHandle = yuvTextureHandles[1]; |
| uDesc.fWidth = yuvSizes[1].fWidth; |
| uDesc.fHeight = yuvSizes[1].fHeight; |
| |
| GrBackendTextureDesc vDesc; |
| vDesc.fConfig = kConfig; |
| vDesc.fOrigin = origin; |
| vDesc.fSampleCnt = 0; |
| vDesc.fTextureHandle = yuvTextureHandles[2]; |
| vDesc.fWidth = yuvSizes[2].fWidth; |
| vDesc.fHeight = yuvSizes[2].fHeight; |
| |
| SkAutoTUnref<GrTexture> yTex(ctx->textureProvider()->wrapBackendTexture( |
| yDesc, kBorrow_GrWrapOwnership)); |
| SkAutoTUnref<GrTexture> uTex(ctx->textureProvider()->wrapBackendTexture( |
| uDesc, kBorrow_GrWrapOwnership)); |
| SkAutoTUnref<GrTexture> vTex(ctx->textureProvider()->wrapBackendTexture( |
| vDesc, kBorrow_GrWrapOwnership)); |
| if (!yTex || !uTex || !vTex) { |
| return nullptr; |
| } |
| |
| GrSurfaceDesc dstDesc; |
| // Needs to be a render target in order to draw to it for the yuv->rgb conversion. |
| dstDesc.fFlags = kRenderTarget_GrSurfaceFlag; |
| dstDesc.fOrigin = origin; |
| dstDesc.fWidth = yuvSizes[0].fWidth; |
| dstDesc.fHeight = yuvSizes[0].fHeight; |
| dstDesc.fConfig = kRGBA_8888_GrPixelConfig; |
| dstDesc.fSampleCnt = 0; |
| |
| SkAutoTUnref<GrTexture> dst(ctx->textureProvider()->createTexture(dstDesc, true)); |
| if (!dst) { |
| return nullptr; |
| } |
| |
| GrPaint paint; |
| paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode); |
| paint.addColorFragmentProcessor(GrYUVtoRGBEffect::Create(paint.getProcessorDataManager(), |
| yTex, uTex, vTex, yuvSizes, |
| colorSpace))->unref(); |
| |
| const SkRect rect = SkRect::MakeWH(SkIntToScalar(dstDesc.fWidth), |
| SkIntToScalar(dstDesc.fHeight)); |
| SkAutoTUnref<GrDrawContext> drawContext(ctx->drawContext()); |
| if (!drawContext) { |
| return nullptr; |
| } |
| |
| drawContext->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(), rect); |
| ctx->flushSurfaceWrites(dst); |
| return new SkImage_Gpu(dstDesc.fWidth, dstDesc.fHeight, kNeedNewImageUniqueID, |
| kOpaque_SkAlphaType, dst, budgeted); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| GrTexture* GrDeepCopyTexture(GrTexture* src, bool budgeted) { |
| GrContext* ctx = src->getContext(); |
| |
| GrSurfaceDesc desc = src->desc(); |
| GrTexture* dst = ctx->textureProvider()->createTexture(desc, budgeted, nullptr, 0); |
| if (!dst) { |
| return nullptr; |
| } |
| |
| const SkIRect srcR = SkIRect::MakeWH(desc.fWidth, desc.fHeight); |
| const SkIPoint dstP = SkIPoint::Make(0, 0); |
| ctx->copySurface(dst, src, srcR, dstP, GrContext::kFlushWrites_PixelOp); |
| return dst; |
| } |
| |