| /* |
| * 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 "SkBitmap.h" |
| #include "SkBitmapCache.h" |
| #include "SkCachedData.h" |
| #include "SkCanvas.h" |
| #include "SkColorSpacePriv.h" |
| #include "SkData.h" |
| #include "SkImageEncoder.h" |
| #include "SkImageFilter.h" |
| #include "SkImageFilterCache.h" |
| #include "SkImageGenerator.h" |
| #include "SkImagePriv.h" |
| #include "SkImageShader.h" |
| #include "SkImage_Base.h" |
| #include "SkNextID.h" |
| #include "SkPicture.h" |
| #include "SkReadPixelsRec.h" |
| #include "SkSpecialImage.h" |
| #include "SkString.h" |
| #include "SkSurface.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrTexture.h" |
| #include "GrContext.h" |
| #include "SkImage_Gpu.h" |
| #endif |
| #include "GrBackendSurface.h" |
| |
| SkImage::SkImage(int width, int height, uint32_t uniqueID) |
| : fWidth(width) |
| , fHeight(height) |
| , fUniqueID(kNeedNewImageUniqueID == uniqueID ? SkNextID::ImageID() : uniqueID) |
| { |
| SkASSERT(width > 0); |
| SkASSERT(height > 0); |
| } |
| |
| bool SkImage::peekPixels(SkPixmap* pm) const { |
| SkPixmap tmp; |
| if (!pm) { |
| pm = &tmp; |
| } |
| return as_IB(this)->onPeekPixels(pm); |
| } |
| |
| bool SkImage::readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes, |
| int srcX, int srcY, CachingHint chint) const { |
| return as_IB(this)->onReadPixels(dstInfo, dstPixels, dstRowBytes, srcX, srcY, chint); |
| } |
| |
| bool SkImage::scalePixels(const SkPixmap& dst, SkFilterQuality quality, CachingHint chint) const { |
| if (this->width() == dst.width() && this->height() == dst.height()) { |
| return this->readPixels(dst, 0, 0, chint); |
| } |
| |
| // Idea: If/when SkImageGenerator supports a native-scaling API (where the generator itself |
| // can scale more efficiently) we should take advantage of it here. |
| // |
| SkBitmap bm; |
| if (as_IB(this)->getROPixels(&bm, chint)) { |
| SkPixmap pmap; |
| // Note: By calling the pixmap scaler, we never cache the final result, so the chint |
| // is (currently) only being applied to the getROPixels. If we get a request to |
| // also attempt to cache the final (scaled) result, we would add that logic here. |
| // |
| return bm.peekPixels(&pmap) && pmap.scalePixels(dst, quality); |
| } |
| return false; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkColorType SkImage::colorType() const { |
| return as_IB(this)->onImageInfo().colorType(); |
| } |
| |
| SkAlphaType SkImage::alphaType() const { |
| return as_IB(this)->onImageInfo().alphaType(); |
| } |
| |
| SkColorSpace* SkImage::colorSpace() const { |
| return as_IB(this)->onImageInfo().colorSpace(); |
| } |
| |
| sk_sp<SkColorSpace> SkImage::refColorSpace() const { |
| return as_IB(this)->onImageInfo().refColorSpace(); |
| } |
| |
| sk_sp<SkShader> SkImage::makeShader(SkShader::TileMode tileX, SkShader::TileMode tileY, |
| const SkMatrix* localMatrix) const { |
| return SkImageShader::Make(sk_ref_sp(const_cast<SkImage*>(this)), tileX, tileY, localMatrix); |
| } |
| |
| sk_sp<SkData> SkImage::encodeToData(SkEncodedImageFormat type, int quality) const { |
| SkBitmap bm; |
| if (as_IB(this)->getROPixels(&bm)) { |
| return SkEncodeBitmap(bm, type, quality); |
| } |
| return nullptr; |
| } |
| |
| sk_sp<SkData> SkImage::encodeToData() const { |
| if (auto encoded = this->refEncodedData()) { |
| return encoded; |
| } |
| |
| return this->encodeToData(SkEncodedImageFormat::kPNG, 100); |
| } |
| |
| sk_sp<SkData> SkImage::refEncodedData() const { |
| return sk_sp<SkData>(as_IB(this)->onRefEncoded()); |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromEncoded(sk_sp<SkData> encoded, const SkIRect* subset) { |
| if (nullptr == encoded || 0 == encoded->size()) { |
| return nullptr; |
| } |
| return SkImage::MakeFromGenerator(SkImageGenerator::MakeFromEncoded(std::move(encoded)), |
| subset); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> SkImage::makeSubset(const SkIRect& subset) const { |
| if (subset.isEmpty()) { |
| return nullptr; |
| } |
| |
| const SkIRect bounds = SkIRect::MakeWH(this->width(), this->height()); |
| if (!bounds.contains(subset)) { |
| return nullptr; |
| } |
| |
| // optimization : return self if the subset == our bounds |
| if (bounds == subset) { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| return as_IB(this)->onMakeSubset(subset); |
| } |
| |
| #if SK_SUPPORT_GPU |
| |
| GrTexture* SkImage::getTexture() const { |
| return as_IB(this)->onGetTexture(); |
| } |
| |
| bool SkImage::isTextureBacked() const { return as_IB(this)->onIsTextureBacked(); } |
| |
| GrBackendTexture SkImage::getBackendTexture(bool flushPendingGrContextIO, |
| GrSurfaceOrigin* origin) const { |
| return as_IB(this)->onGetBackendTexture(flushPendingGrContextIO, origin); |
| } |
| |
| bool SkImage::isValid(GrContext* context) const { |
| if (context && context->abandoned()) { |
| return false; |
| } |
| return as_IB(this)->onIsValid(context); |
| } |
| |
| #else |
| |
| GrTexture* SkImage::getTexture() const { return nullptr; } |
| |
| bool SkImage::isTextureBacked() const { return false; } |
| |
| GrBackendTexture SkImage::getBackendTexture(bool flushPendingGrContextIO, |
| GrSurfaceOrigin* origin) const { |
| return GrBackendTexture(); // invalid |
| } |
| |
| bool SkImage::isValid(GrContext* context) const { |
| if (context) { |
| return false; |
| } |
| return as_IB(this)->onIsValid(context); |
| } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| SkImage_Base::SkImage_Base(int width, int height, uint32_t uniqueID) |
| : INHERITED(width, height, uniqueID) |
| , fAddedToRasterCache(false) |
| {} |
| |
| SkImage_Base::~SkImage_Base() { |
| if (fAddedToRasterCache.load()) { |
| SkNotifyBitmapGenIDIsStale(this->uniqueID()); |
| } |
| } |
| |
| GrBackendTexture SkImage_Base::onGetBackendTexture(bool flushPendingGrContextIO, |
| GrSurfaceOrigin* origin) const { |
| return GrBackendTexture(); // invalid |
| } |
| |
| bool SkImage::readPixels(const SkPixmap& pmap, int srcX, int srcY, CachingHint chint) const { |
| return this->readPixels(pmap.info(), pmap.writable_addr(), pmap.rowBytes(), srcX, srcY, chint); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> SkImage::MakeFromBitmap(const SkBitmap& bm) { |
| if (!bm.pixelRef()) { |
| return nullptr; |
| } |
| |
| return SkMakeImageFromRasterBitmap(bm, kIfMutable_SkCopyPixelsMode); |
| } |
| |
| bool SkImage::asLegacyBitmap(SkBitmap* bitmap, LegacyBitmapMode ) const { |
| return as_IB(this)->onAsLegacyBitmap(bitmap); |
| } |
| |
| sk_sp<SkCachedData> SkImage_Base::getPlanes(SkYUVASizeInfo*, SkYUVAIndex[4], |
| SkYUVColorSpace*, const void*[4]) { |
| return nullptr; |
| } |
| |
| bool SkImage_Base::onAsLegacyBitmap(SkBitmap* bitmap) const { |
| // As the base-class, all we can do is make a copy (regardless of mode). |
| // Subclasses that want to be more optimal should override. |
| SkImageInfo info = this->onImageInfo().makeColorType(kN32_SkColorType).makeColorSpace(nullptr); |
| if (!bitmap->tryAllocPixels(info)) { |
| return false; |
| } |
| if (!this->readPixels(bitmap->info(), bitmap->getPixels(), bitmap->rowBytes(), 0, 0)) { |
| bitmap->reset(); |
| return false; |
| } |
| |
| bitmap->setImmutable(); |
| return true; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromPicture(sk_sp<SkPicture> picture, const SkISize& dimensions, |
| const SkMatrix* matrix, const SkPaint* paint, |
| BitDepth bitDepth, sk_sp<SkColorSpace> colorSpace) { |
| return MakeFromGenerator(SkImageGenerator::MakeFromPicture(dimensions, std::move(picture), |
| matrix, paint, bitDepth, |
| std::move(colorSpace))); |
| } |
| |
| sk_sp<SkImage> SkImage::makeWithFilter(const SkImageFilter* filter, const SkIRect& subset, |
| const SkIRect& clipBounds, SkIRect* outSubset, |
| SkIPoint* offset) const { |
| GrContext* context = as_IB(this)->context(); |
| |
| return this->makeWithFilter(context, filter, subset, clipBounds, outSubset, offset); |
| } |
| |
| sk_sp<SkImage> SkImage::makeWithFilter(GrContext* grContext, |
| const SkImageFilter* filter, const SkIRect& subset, |
| const SkIRect& clipBounds, SkIRect* outSubset, |
| SkIPoint* offset) const { |
| if (!filter || !outSubset || !offset || !this->bounds().contains(subset)) { |
| return nullptr; |
| } |
| sk_sp<SkSpecialImage> srcSpecialImage = SkSpecialImage::MakeFromImage( |
| grContext, subset, sk_ref_sp(const_cast<SkImage*>(this))); |
| if (!srcSpecialImage) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImageFilterCache> cache( |
| SkImageFilterCache::Create(SkImageFilterCache::kDefaultTransientSize)); |
| SkImageFilter::OutputProperties outputProperties(as_IB(this)->onImageInfo().colorType(), |
| as_IB(this)->onImageInfo().colorSpace()); |
| SkImageFilter::Context context(SkMatrix::I(), clipBounds, cache.get(), outputProperties); |
| |
| sk_sp<SkSpecialImage> result = filter->filterImage(srcSpecialImage.get(), context, offset); |
| if (!result) { |
| return nullptr; |
| } |
| |
| *outSubset = SkIRect::MakeWH(result->width(), result->height()); |
| if (!outSubset->intersect(clipBounds.makeOffset(-offset->x(), -offset->y()))) { |
| return nullptr; |
| } |
| offset->fX += outSubset->x(); |
| offset->fY += outSubset->y(); |
| |
| // Note that here we're returning the special image's entire backing store, loose padding |
| // and all! |
| return result->asImage(); |
| } |
| |
| bool SkImage::isLazyGenerated() const { |
| return as_IB(this)->onIsLazyGenerated(); |
| } |
| |
| bool SkImage::isAlphaOnly() const { |
| return as_IB(this)->onImageInfo().colorType() == kAlpha_8_SkColorType; |
| } |
| |
| sk_sp<SkImage> SkImage::makeColorSpace(sk_sp<SkColorSpace> target) const { |
| if (!target) { |
| return nullptr; |
| } |
| |
| // No need to create a new image if: |
| // (1) The color spaces are equal. |
| // (2) The color type is kAlpha8. |
| SkColorSpace* colorSpace = this->colorSpace(); |
| if (!colorSpace) { |
| colorSpace = sk_srgb_singleton(); |
| } |
| if (SkColorSpace::Equals(colorSpace, target.get()) || this->isAlphaOnly()) { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| |
| return as_IB(this)->onMakeColorTypeAndColorSpace(this->colorType(), std::move(target)); |
| } |
| |
| sk_sp<SkImage> SkImage::makeColorTypeAndColorSpace(SkColorType targetColorType, |
| sk_sp<SkColorSpace> targetColorSpace) const { |
| if (kUnknown_SkColorType == targetColorType || !targetColorSpace) { |
| return nullptr; |
| } |
| |
| SkColorType colorType = this->colorType(); |
| SkColorSpace* colorSpace = this->colorSpace(); |
| if (!colorSpace) { |
| colorSpace = sk_srgb_singleton(); |
| } |
| if (colorType == targetColorType && |
| (SkColorSpace::Equals(colorSpace, targetColorSpace.get()) || this->isAlphaOnly())) { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| |
| return as_IB(this)->onMakeColorTypeAndColorSpace(targetColorType, std::move(targetColorSpace)); |
| } |
| |
| sk_sp<SkImage> SkImage::makeNonTextureImage() const { |
| if (!this->isTextureBacked()) { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| return this->makeRasterImage(); |
| } |
| |
| sk_sp<SkImage> SkImage::makeRasterImage() const { |
| SkPixmap pm; |
| if (this->peekPixels(&pm)) { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| |
| const SkImageInfo info = as_IB(this)->onImageInfo(); |
| const size_t rowBytes = info.minRowBytes(); |
| size_t size = info.computeByteSize(rowBytes); |
| if (SkImageInfo::ByteSizeOverflowed(size)) { |
| return nullptr; |
| } |
| |
| sk_sp<SkData> data = SkData::MakeUninitialized(size); |
| pm = { info.makeColorSpace(nullptr), data->writable_data(), info.minRowBytes() }; |
| if (!this->readPixels(pm, 0, 0)) { |
| return nullptr; |
| } |
| |
| return SkImage::MakeRasterData(info, std::move(data), rowBytes); |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////////////// |
| |
| #if !SK_SUPPORT_GPU |
| |
| sk_sp<SkImage> SkImage::MakeFromTexture(GrContext* ctx, |
| const GrBackendTexture& tex, GrSurfaceOrigin origin, |
| SkColorType ct, SkAlphaType at, sk_sp<SkColorSpace> cs, |
| TextureReleaseProc releaseP, ReleaseContext releaseC) { |
| return nullptr; |
| } |
| |
| bool SkImage::MakeBackendTextureFromSkImage(GrContext*, |
| sk_sp<SkImage>, |
| GrBackendTexture*, |
| BackendTextureReleaseProc*) { |
| return false; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromAdoptedTexture(GrContext* ctx, |
| const GrBackendTexture& tex, GrSurfaceOrigin origin, |
| SkColorType ct, SkAlphaType at, |
| sk_sp<SkColorSpace> cs) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromYUVATexturesCopy(GrContext* context, |
| SkYUVColorSpace yuvColorSpace, |
| const GrBackendTexture yuvaTextures[], |
| const SkYUVAIndex yuvaIndices[4], |
| SkISize imageSize, |
| GrSurfaceOrigin imageOrigin, |
| sk_sp<SkColorSpace> imageColorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromYUVATexturesCopyWithExternalBackend( |
| GrContext* context, |
| SkYUVColorSpace yuvColorSpace, |
| const GrBackendTexture yuvaTextures[], |
| const SkYUVAIndex yuvaIndices[4], |
| SkISize imageSize, |
| GrSurfaceOrigin imageOrigin, |
| const GrBackendTexture& backendTexture, |
| sk_sp<SkColorSpace> imageColorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromYUVTexturesCopy(GrContext* ctx, SkYUVColorSpace space, |
| const GrBackendTexture[3], |
| GrSurfaceOrigin origin, |
| sk_sp<SkColorSpace> imageColorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromYUVTexturesCopyWithExternalBackend( |
| GrContext* context, SkYUVColorSpace yuvColorSpace, const GrBackendTexture yuvTextures[3], |
| GrSurfaceOrigin surfaceOrigin, const GrBackendTexture& backendTexture, |
| sk_sp<SkColorSpace> colorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromNV12TexturesCopy(GrContext* ctx, SkYUVColorSpace space, |
| const GrBackendTexture[2], |
| GrSurfaceOrigin origin, |
| sk_sp<SkColorSpace> imageColorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::makeTextureImage(GrContext*, SkColorSpace* dstColorSpace, |
| GrMipMapped mipMapped) const { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> MakeFromNV12TexturesCopyWithExternalBackend(GrContext* context, |
| SkYUVColorSpace yuvColorSpace, |
| const GrBackendTexture nv12Textures[2], |
| GrSurfaceOrigin surfaceOrigin, |
| const GrBackendTexture& backendTexture, |
| sk_sp<SkColorSpace> colorSpace) { |
| return nullptr; |
| } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| bool SkImage_pinAsTexture(const SkImage* image, GrContext* ctx) { |
| SkASSERT(image); |
| SkASSERT(ctx); |
| return as_IB(image)->onPinAsTexture(ctx); |
| } |
| |
| void SkImage_unpinAsTexture(const SkImage* image, GrContext* ctx) { |
| SkASSERT(image); |
| SkASSERT(ctx); |
| as_IB(image)->onUnpinAsTexture(ctx); |
| } |
| |
| SkIRect SkImage_getSubset(const SkImage* image) { |
| SkASSERT(image); |
| return as_IB(image)->onGetSubset(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> SkImageMakeRasterCopyAndAssignColorSpace(const SkImage* src, |
| SkColorSpace* colorSpace) { |
| // Read the pixels out of the source image, with no conversion |
| SkImageInfo info = as_IB(src)->onImageInfo(); |
| if (kUnknown_SkColorType == info.colorType()) { |
| SkDEBUGFAIL("Unexpected color type"); |
| return nullptr; |
| } |
| |
| size_t rowBytes = info.minRowBytes(); |
| size_t size = info.computeByteSize(rowBytes); |
| if (SkImageInfo::ByteSizeOverflowed(size)) { |
| return nullptr; |
| } |
| auto data = SkData::MakeUninitialized(size); |
| if (!data) { |
| return nullptr; |
| } |
| |
| SkPixmap pm(info, data->writable_data(), rowBytes); |
| if (!src->readPixels(pm, 0, 0, SkImage::kDisallow_CachingHint)) { |
| return nullptr; |
| } |
| |
| // Wrap them in a new image with a different color space |
| return SkImage::MakeRasterData(info.makeColorSpace(sk_ref_sp(colorSpace)), data, rowBytes); |
| } |
