| /* | |
| * 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 "GrCaps.h" | |
| #include "GrContext.h" | |
| #include "GrDrawContext.h" | |
| #include "GrImageIDTextureAdjuster.h" | |
| #include "effects/GrYUVEffect.h" | |
| #include "SkCanvas.h" | |
| #include "SkBitmapCache.h" | |
| #include "SkGpuDevice.h" | |
| #include "SkGrPixelRef.h" | |
| #include "SkGrPriv.h" | |
| #include "SkImageFilter.h" | |
| #include "SkImage_Gpu.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) | |
| , fTexture(SkRef(tex)) | |
| , fAlphaType(at) | |
| , fBudgeted(budgeted) | |
| , fAddedRasterVersionToCache(false) | |
| { | |
| SkASSERT(tex->width() == w); | |
| SkASSERT(tex->height() == h); | |
| } | |
| SkImage_Gpu::~SkImage_Gpu() { | |
| if (fAddedRasterVersionToCache.load()) { | |
| SkNotifyBitmapGenIDIsStale(this->uniqueID()); | |
| } | |
| } | |
| extern void SkTextureImageApplyBudgetedDecision(SkImage* image) { | |
| if (as_IB(image)->getTexture()) { | |
| ((SkImage_Gpu*)image)->applyBudgetDecision(); | |
| } | |
| } | |
| static SkImageInfo make_info(int w, int h, bool isOpaque) { | |
| return SkImageInfo::MakeN32(w, h, isOpaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType); | |
| } | |
| bool SkImage_Gpu::getROPixels(SkBitmap* dst, CachingHint chint) const { | |
| if (SkBitmapCache::Find(this->uniqueID(), dst)) { | |
| SkASSERT(dst->getGenerationID() == this->uniqueID()); | |
| SkASSERT(dst->isImmutable()); | |
| SkASSERT(dst->getPixels()); | |
| return true; | |
| } | |
| if (!dst->tryAllocPixels(make_info(this->width(), this->height(), this->isOpaque()))) { | |
| return false; | |
| } | |
| if (!fTexture->readPixels(0, 0, dst->width(), dst->height(), kSkia8888_GrPixelConfig, | |
| dst->getPixels(), dst->rowBytes())) { | |
| return false; | |
| } | |
| dst->pixelRef()->setImmutableWithID(this->uniqueID()); | |
| if (kAllow_CachingHint == chint) { | |
| SkBitmapCache::Add(this->uniqueID(), *dst); | |
| fAddedRasterVersionToCache.store(true); | |
| } | |
| return true; | |
| } | |
| bool SkImage_Gpu::asBitmapForImageFilters(SkBitmap* bitmap) const { | |
| bitmap->setInfo(make_info(this->width(), this->height(), this->isOpaque())); | |
| bitmap->setPixelRef(new SkGrPixelRef(bitmap->info(), fTexture))->unref(); | |
| bitmap->pixelRef()->setImmutableWithID(this->uniqueID()); | |
| return true; | |
| } | |
| GrTexture* SkImage_Gpu::asTextureRef(GrContext* ctx, const GrTextureParams& params) const { | |
| return GrImageTextureAdjuster(as_IB(this)).refTextureSafeForParams(params, nullptr); | |
| } | |
| 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, CachingHint) 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(GrYUVEffect::CreateYUVToRGB(yTex, uTex, vTex, yuvSizes, | |
| colorSpace))->unref(); | |
| const SkRect rect = SkRect::MakeWH(SkIntToScalar(dstDesc.fWidth), | |
| SkIntToScalar(dstDesc.fHeight)); | |
| SkAutoTUnref<GrDrawContext> drawContext(ctx->drawContext(dst->asRenderTarget())); | |
| if (!drawContext) { | |
| return nullptr; | |
| } | |
| drawContext->drawRect(GrClip::WideOpen(), paint, SkMatrix::I(), rect); | |
| ctx->flushSurfaceWrites(dst); | |
| return new SkImage_Gpu(dstDesc.fWidth, dstDesc.fHeight, kNeedNewImageUniqueID, | |
| kOpaque_SkAlphaType, dst, budgeted); | |
| } | |
| static SkImage* create_image_from_maker(GrTextureMaker* maker, SkAlphaType at, uint32_t id) { | |
| SkAutoTUnref<GrTexture> texture(maker->refTextureForParams(GrTextureParams::ClampNoFilter())); | |
| if (!texture) { | |
| return nullptr; | |
| } | |
| return new SkImage_Gpu(texture->width(), texture->height(), id, at, texture, | |
| SkSurface::kNo_Budgeted); | |
| } | |
| SkImage* SkImage::newTextureImage(GrContext *context) const { | |
| if (!context) { | |
| return nullptr; | |
| } | |
| if (GrTexture* peek = as_IB(this)->peekTexture()) { | |
| return peek->getContext() == context ? SkRef(const_cast<SkImage*>(this)) : nullptr; | |
| } | |
| // No way to check whether a image is premul or not? | |
| SkAlphaType at = this->isOpaque() ? kOpaque_SkAlphaType : kPremul_SkAlphaType; | |
| if (SkImageCacherator* cacher = as_IB(this)->peekCacherator()) { | |
| GrImageTextureMaker maker(context, cacher, this, kDisallow_CachingHint); | |
| return create_image_from_maker(&maker, at, this->uniqueID()); | |
| } | |
| SkBitmap bmp; | |
| if (!this->asLegacyBitmap(&bmp, kRO_LegacyBitmapMode)) { | |
| return nullptr; | |
| } | |
| GrBitmapTextureMaker maker(context, bmp); | |
| return create_image_from_maker(&maker, at, this->uniqueID()); | |
| } | |
| /////////////////////////////////////////////////////////////////////////////////////////////////// | |
| 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); | |
| ctx->flushSurfaceWrites(dst); | |
| return dst; | |
| } | |