| /* |
| * 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 "SkCanvas.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 "SkPixelRef.h" |
| #include "SkPixelSerializer.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 |
| |
| 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 { |
| SkReadPixelsRec rec(dstInfo, dstPixels, dstRowBytes, srcX, srcY); |
| if (!rec.trim(this->width(), this->height())) { |
| return false; |
| } |
| return as_IB(this)->onReadPixels(rec.fInfo, rec.fPixels, rec.fRowBytes, rec.fX, rec.fY, 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. |
| // |
| SkDestinationSurfaceColorMode decodeColorMode = dst.info().colorSpace() |
| ? SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware |
| : SkDestinationSurfaceColorMode::kLegacy; |
| SkBitmap bm; |
| if (as_IB(this)->getROPixels(&bm, decodeColorMode, chint)) { |
| bm.lockPixels(); |
| 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; |
| } |
| |
| void SkImage::preroll(GrContext* ctx) const { |
| // For now, and to maintain parity w/ previous pixelref behavior, we just force the image |
| // to produce a cached raster-bitmap form, so that drawing to a raster canvas should be fast. |
| // |
| SkBitmap bm; |
| if (as_IB(this)->getROPixels(&bm, SkDestinationSurfaceColorMode::kLegacy)) { |
| bm.lockPixels(); |
| bm.unlockPixels(); |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkAlphaType SkImage::alphaType() const { |
| return as_IB(this)->onAlphaType(); |
| } |
| |
| 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); |
| } |
| |
| SkData* SkImage::encode(SkEncodedImageFormat type, int quality) const { |
| SkBitmap bm; |
| // TODO: Right now, the encoders don't handle F16 or linearly premultiplied data. Once they do, |
| // we should decode in "color space aware" mode, then re-encode that. For now, work around this |
| // by asking for a legacy decode (which gives us the raw data in N32). |
| if (as_IB(this)->getROPixels(&bm, SkDestinationSurfaceColorMode::kLegacy)) { |
| SkDynamicMemoryWStream buf; |
| return SkEncodeImage(&buf, bm, type, quality) ? buf.detachAsData().release() : nullptr; |
| } |
| return nullptr; |
| } |
| |
| SkData* SkImage::encode(SkPixelSerializer* serializer) const { |
| sk_sp<SkData> encoded(this->refEncoded()); |
| if (encoded && |
| (!serializer || serializer->useEncodedData(encoded->data(), encoded->size()))) { |
| return encoded.release(); |
| } |
| |
| SkBitmap bm; |
| SkAutoPixmapUnlock apu; |
| // TODO: Right now, the encoders don't handle F16 or linearly premultiplied data. Once they do, |
| // we should decode in "color space aware" mode, then re-encode that. For now, work around this |
| // by asking for a legacy decode (which gives us the raw data in N32). |
| if (as_IB(this)->getROPixels(&bm, SkDestinationSurfaceColorMode::kLegacy) && |
| bm.requestLock(&apu)) { |
| if (serializer) { |
| return serializer->encode(apu.pixmap()); |
| } else { |
| SkDynamicMemoryWStream buf; |
| return SkEncodeImage(&buf, apu.pixmap(), SkEncodedImageFormat::kPNG, 100) |
| ? buf.detachAsData().release() : nullptr; |
| } |
| } |
| |
| return nullptr; |
| } |
| |
| SkData* SkImage::refEncoded() const { |
| GrContext* ctx = nullptr; // should we allow the caller to pass in a ctx? |
| return as_IB(this)->onRefEncoded(ctx); |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromEncoded(sk_sp<SkData> encoded, const SkIRect* subset) { |
| if (nullptr == encoded || 0 == encoded->size()) { |
| return nullptr; |
| } |
| SkImageGenerator* generator = SkImageGenerator::NewFromEncoded(encoded.get()); |
| return SkImage::MakeFromGenerator(generator, subset); |
| } |
| |
| const char* SkImage::toString(SkString* str) const { |
| str->appendf("image: (id:%d (%d, %d) %s)", this->uniqueID(), this->width(), this->height(), |
| this->isOpaque() ? "opaque" : ""); |
| return str->c_str(); |
| } |
| |
| 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)->peekTexture(); |
| } |
| |
| bool SkImage::isTextureBacked() const { return SkToBool(as_IB(this)->peekTexture()); } |
| |
| GrBackendObject SkImage::getTextureHandle(bool flushPendingGrContextIO) const { |
| GrTexture* texture = as_IB(this)->peekTexture(); |
| if (texture) { |
| GrContext* context = texture->getContext(); |
| if (context) { |
| if (flushPendingGrContextIO) { |
| context->prepareSurfaceForExternalIO(texture); |
| } |
| } |
| return texture->getTextureHandle(); |
| } |
| return 0; |
| } |
| |
| #else |
| |
| GrTexture* SkImage::getTexture() const { return nullptr; } |
| |
| bool SkImage::isTextureBacked() const { return false; } |
| |
| GrBackendObject SkImage::getTextureHandle(bool) const { return 0; } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static bool raster_canvas_supports(const SkImageInfo& info) { |
| switch (info.colorType()) { |
| case kN32_SkColorType: |
| return kUnpremul_SkAlphaType != info.alphaType(); |
| case kRGB_565_SkColorType: |
| return true; |
| case kAlpha_8_SkColorType: |
| return true; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| SkImage_Base::SkImage_Base(int width, int height, uint32_t uniqueID) |
| : INHERITED(width, height, uniqueID) |
| , fAddedToCache(false) |
| {} |
| |
| SkImage_Base::~SkImage_Base() { |
| if (fAddedToCache.load()) { |
| SkNotifyBitmapGenIDIsStale(this->uniqueID()); |
| } |
| } |
| |
| bool SkImage_Base::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes, |
| int srcX, int srcY, CachingHint) const { |
| if (!raster_canvas_supports(dstInfo)) { |
| return false; |
| } |
| |
| SkBitmap bm; |
| bm.installPixels(dstInfo, dstPixels, dstRowBytes); |
| SkCanvas canvas(bm); |
| |
| SkPaint paint; |
| paint.setBlendMode(SkBlendMode::kSrc); |
| canvas.drawImage(this, -SkIntToScalar(srcX), -SkIntToScalar(srcY), &paint); |
| |
| return true; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| 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); |
| } |
| |
| #if SK_SUPPORT_GPU |
| #include "GrTextureToYUVPlanes.h" |
| #endif |
| |
| #include "SkRGBAToYUV.h" |
| |
| bool SkImage::readYUV8Planes(const SkISize sizes[3], void* const planes[3], |
| const size_t rowBytes[3], SkYUVColorSpace colorSpace) const { |
| #if SK_SUPPORT_GPU |
| if (GrTexture* texture = as_IB(this)->peekTexture()) { |
| if (GrTextureToYUVPlanes(texture, sizes, planes, rowBytes, colorSpace)) { |
| return true; |
| } |
| } |
| #endif |
| return SkRGBAToYUV(this, sizes, planes, rowBytes, colorSpace); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> SkImage::MakeFromBitmap(const SkBitmap& bm) { |
| SkPixelRef* pr = bm.pixelRef(); |
| if (nullptr == pr) { |
| return nullptr; |
| } |
| |
| return SkMakeImageFromRasterBitmap(bm, kIfMutable_SkCopyPixelsMode); |
| } |
| |
| bool SkImage::asLegacyBitmap(SkBitmap* bitmap, LegacyBitmapMode mode) const { |
| return as_IB(this)->onAsLegacyBitmap(bitmap, mode); |
| } |
| |
| bool SkImage_Base::onAsLegacyBitmap(SkBitmap* bitmap, LegacyBitmapMode mode) 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; |
| } |
| |
| if (kRO_LegacyBitmapMode == mode) { |
| bitmap->setImmutable(); |
| } |
| return true; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromPicture(sk_sp<SkPicture> picture, const SkISize& dimensions, |
| const SkMatrix* matrix, const SkPaint* paint) { |
| if (!picture) { |
| return nullptr; |
| } |
| return MakeFromGenerator(SkImageGenerator::NewFromPicture(dimensions, picture.get(), |
| matrix, paint)); |
| } |
| |
| sk_sp<SkImage> SkImage::makeWithFilter(const SkImageFilter* filter, const SkIRect& subset, |
| const SkIRect& clipBounds, SkIRect* outSubset, |
| SkIPoint* offset) const { |
| if (!filter || !outSubset || !offset || !this->bounds().contains(subset)) { |
| return nullptr; |
| } |
| SkColorSpace* colorSpace = as_IB(this)->onImageInfo().colorSpace(); |
| SkDestinationSurfaceColorMode decodeColorMode = colorSpace |
| ? SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware |
| : SkDestinationSurfaceColorMode::kLegacy; |
| sk_sp<SkSpecialImage> srcSpecialImage = SkSpecialImage::MakeFromImage( |
| subset, sk_ref_sp(const_cast<SkImage*>(this)), decodeColorMode); |
| if (!srcSpecialImage) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImageFilterCache> cache( |
| SkImageFilterCache::Create(SkImageFilterCache::kDefaultTransientSize)); |
| SkImageFilter::OutputProperties outputProperties(colorSpace); |
| SkImageFilter::Context context(SkMatrix::I(), clipBounds, cache.get(), outputProperties); |
| |
| sk_sp<SkSpecialImage> result = |
| filter->filterImage(srcSpecialImage.get(), context, offset); |
| |
| if (!result) { |
| return nullptr; |
| } |
| |
| SkIRect fullSize = SkIRect::MakeWH(result->width(), result->height()); |
| #if SK_SUPPORT_GPU |
| if (result->isTextureBacked()) { |
| GrContext* context = result->getContext(); |
| sk_sp<GrTexture> texture = result->asTextureRef(context); |
| fullSize = SkIRect::MakeWH(texture->width(), texture->height()); |
| } |
| #endif |
| *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(); |
| // This isn't really a "tight" subset, but includes any texture padding. |
| return result->makeTightSubset(fullSize); |
| } |
| |
| bool SkImage::isLazyGenerated() const { |
| return as_IB(this)->onIsLazyGenerated(); |
| } |
| |
| bool SkImage::isAlphaOnly() const { |
| return as_IB(this)->onImageInfo().colorType() == kAlpha_8_SkColorType; |
| } |
| |
| ////////////////////////////////////////////////////////////////////////////////////// |
| |
| #if !SK_SUPPORT_GPU |
| |
| sk_sp<SkImage> SkImage::MakeTextureFromPixmap(GrContext*, const SkPixmap&, SkBudgeted budgeted) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> MakeTextureFromMipMap(GrContext*, const SkImageInfo&, const GrMipLevel* texels, |
| int mipLevelCount, SkBudgeted, SkDestinationSurfaceColorMode) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType, |
| sk_sp<SkColorSpace>, TextureReleaseProc, ReleaseContext) { |
| return nullptr; |
| } |
| |
| size_t SkImage::getDeferredTextureImageData(const GrContextThreadSafeProxy&, |
| const DeferredTextureImageUsageParams[], |
| int paramCnt, void* buffer, |
| SkColorSpace* dstColorSpace) const { |
| return 0; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromDeferredTextureImageData(GrContext* context, const void*, |
| SkBudgeted) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&, |
| SkAlphaType, sk_sp<SkColorSpace>) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromYUVTexturesCopy(GrContext* ctx, SkYUVColorSpace space, |
| const GrBackendObject yuvTextureHandles[3], |
| const SkISize yuvSizes[3], |
| GrSurfaceOrigin origin, |
| sk_sp<SkColorSpace> imageColorSpace) { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::makeTextureImage(GrContext*) const { |
| return nullptr; |
| } |
| |
| sk_sp<SkImage> SkImage::makeNonTextureImage() const { |
| return sk_ref_sp(const_cast<SkImage*>(this)); |
| } |
| |
| #endif |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> MakeTextureFromMipMap(GrContext*, const SkImageInfo&, const GrMipLevel* texels, |
| int mipLevelCount, SkBudgeted) { |
| return nullptr; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| #include "SkImageDeserializer.h" |
| |
| sk_sp<SkImage> SkImageDeserializer::makeFromData(SkData* data, const SkIRect* subset) { |
| return SkImage::MakeFromEncoded(sk_ref_sp(data), subset); |
| } |
| sk_sp<SkImage> SkImageDeserializer::makeFromMemory(const void* data, size_t length, |
| const SkIRect* subset) { |
| return SkImage::MakeFromEncoded(SkData::MakeWithCopy(data, length), subset); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| 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); |
| } |