| /* |
| * 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, |
| SkBudgeted 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, 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 SkBudgeted budgeted = SkBudgeted::kNo; |
| 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; |
| } |
| |
| SkAutoTUnref<GrTexture> dst(GrDeepCopyTexture(src, SkBudgeted::kYes)); |
| if (!dst) { |
| return nullptr; |
| } |
| |
| return new SkImage_Gpu(desc.fWidth, desc.fHeight, kNeedNewImageUniqueID, at, dst, |
| SkBudgeted::kYes); |
| } |
| |
| SkImage* SkImage::NewFromYUVTexturesCopy(GrContext* ctx , SkYUVColorSpace colorSpace, |
| const GrBackendObject yuvTextureHandles[3], |
| const SkISize yuvSizes[3], |
| GrSurfaceOrigin origin) { |
| const SkBudgeted budgeted = SkBudgeted::kYes; |
| |
| 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, SkBudgeted::kYes)); |
| 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, |
| SkBudgeted::kNo); |
| } |
| |
| 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, SkBudgeted 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; |
| } |
| |
