| /* |
| * 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 "SkImage_Base.h" |
| #include "SkBitmap.h" |
| #include "SkBitmapProcShader.h" |
| #include "SkCanvas.h" |
| #include "SkColorSpaceXform_Base.h" |
| #include "SkColorSpaceXformImageGenerator.h" |
| #include "SkColorSpaceXformPriv.h" |
| #include "SkColorTable.h" |
| #include "SkData.h" |
| #include "SkImageInfoPriv.h" |
| #include "SkImagePriv.h" |
| #include "SkPixelRef.h" |
| #include "SkSurface.h" |
| #include "SkTLazy.h" |
| #include "SkUnPreMultiplyPriv.h" |
| |
| #if SK_SUPPORT_GPU |
| #include "GrContext.h" |
| #include "GrTextureAdjuster.h" |
| #include "SkGr.h" |
| #endif |
| |
| // fixes https://bug.skia.org/5096 |
| static bool is_not_subset(const SkBitmap& bm) { |
| SkASSERT(bm.pixelRef()); |
| SkISize dim = SkISize::Make(bm.pixelRef()->width(), bm.pixelRef()->height()); |
| SkASSERT(dim != bm.dimensions() || bm.pixelRefOrigin().isZero()); |
| return dim == bm.dimensions(); |
| } |
| |
| class SkImage_Raster : public SkImage_Base { |
| public: |
| static bool ValidArgs(const Info& info, size_t rowBytes, size_t* minSize) { |
| const int maxDimension = SK_MaxS32 >> 2; |
| |
| if (info.width() <= 0 || info.height() <= 0) { |
| return false; |
| } |
| if (info.width() > maxDimension || info.height() > maxDimension) { |
| return false; |
| } |
| if ((unsigned)info.colorType() > (unsigned)kLastEnum_SkColorType) { |
| return false; |
| } |
| if ((unsigned)info.alphaType() > (unsigned)kLastEnum_SkAlphaType) { |
| return false; |
| } |
| |
| if (kUnknown_SkColorType == info.colorType()) { |
| return false; |
| } |
| if (rowBytes < info.minRowBytes()) { |
| return false; |
| } |
| |
| size_t size = info.getSafeSize(rowBytes); |
| if (0 == size) { |
| return false; |
| } |
| |
| if (minSize) { |
| *minSize = size; |
| } |
| return true; |
| } |
| |
| SkImage_Raster(const SkImageInfo&, sk_sp<SkData>, size_t rb, |
| uint32_t id = kNeedNewImageUniqueID); |
| ~SkImage_Raster() override; |
| |
| SkImageInfo onImageInfo() const override { |
| return fBitmap.info(); |
| } |
| SkAlphaType onAlphaType() const override { |
| return fBitmap.alphaType(); |
| } |
| |
| bool onReadPixels(const SkImageInfo&, void*, size_t, int srcX, int srcY, CachingHint) const override; |
| bool onPeekPixels(SkPixmap*) const override; |
| const SkBitmap* onPeekBitmap() const override { return &fBitmap; } |
| |
| #if SK_SUPPORT_GPU |
| sk_sp<GrTextureProxy> asTextureProxyRef(GrContext*, const GrSamplerParams&, |
| SkColorSpace*, sk_sp<SkColorSpace>*, |
| SkScalar scaleAdjust[2]) const override; |
| #endif |
| |
| bool getROPixels(SkBitmap*, SkColorSpace* dstColorSpace, CachingHint) const override; |
| sk_sp<SkImage> onMakeSubset(const SkIRect&) const override; |
| |
| SkPixelRef* getPixelRef() const { return fBitmap.pixelRef(); } |
| |
| bool onAsLegacyBitmap(SkBitmap*, LegacyBitmapMode) const override; |
| |
| SkImage_Raster(const SkBitmap& bm, bool bitmapMayBeMutable = false) |
| : INHERITED(bm.width(), bm.height(), |
| is_not_subset(bm) ? bm.getGenerationID() |
| : (uint32_t)kNeedNewImageUniqueID) |
| , fBitmap(bm) |
| { |
| SkASSERT(bitmapMayBeMutable || fBitmap.isImmutable()); |
| } |
| |
| sk_sp<SkImage> onMakeColorSpace(sk_sp<SkColorSpace>, SkColorType, |
| SkTransferFunctionBehavior) const override; |
| |
| bool onIsValid(GrContext* context) const override { return true; } |
| |
| #if SK_SUPPORT_GPU |
| sk_sp<GrTextureProxy> refPinnedTextureProxy(uint32_t* uniqueID) const override; |
| bool onPinAsTexture(GrContext*) const override; |
| void onUnpinAsTexture(GrContext*) const override; |
| #endif |
| |
| private: |
| SkBitmap fBitmap; |
| |
| #if SK_SUPPORT_GPU |
| mutable sk_sp<GrTextureProxy> fPinnedProxy; |
| mutable int32_t fPinnedCount = 0; |
| mutable uint32_t fPinnedUniqueID = 0; |
| #endif |
| |
| typedef SkImage_Base INHERITED; |
| }; |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void release_data(void* addr, void* context) { |
| SkData* data = static_cast<SkData*>(context); |
| data->unref(); |
| } |
| |
| SkImage_Raster::SkImage_Raster(const Info& info, sk_sp<SkData> data, size_t rowBytes, uint32_t id) |
| : INHERITED(info.width(), info.height(), id) |
| { |
| void* addr = const_cast<void*>(data->data()); |
| |
| fBitmap.installPixels(info, addr, rowBytes, release_data, data.release()); |
| fBitmap.setImmutable(); |
| } |
| |
| SkImage_Raster::~SkImage_Raster() { |
| #if SK_SUPPORT_GPU |
| SkASSERT(nullptr == fPinnedProxy.get()); // want the caller to have manually unpinned |
| #endif |
| } |
| |
| bool SkImage_Raster::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes, |
| int srcX, int srcY, CachingHint) const { |
| SkBitmap shallowCopy(fBitmap); |
| return shallowCopy.readPixels(dstInfo, dstPixels, dstRowBytes, srcX, srcY); |
| } |
| |
| bool SkImage_Raster::onPeekPixels(SkPixmap* pm) const { |
| return fBitmap.peekPixels(pm); |
| } |
| |
| bool SkImage_Raster::getROPixels(SkBitmap* dst, SkColorSpace* dstColorSpace, CachingHint) const { |
| *dst = fBitmap; |
| return true; |
| } |
| |
| #if SK_SUPPORT_GPU |
| sk_sp<GrTextureProxy> SkImage_Raster::asTextureProxyRef(GrContext* context, |
| const GrSamplerParams& params, |
| SkColorSpace* dstColorSpace, |
| sk_sp<SkColorSpace>* texColorSpace, |
| SkScalar scaleAdjust[2]) const { |
| if (!context) { |
| return nullptr; |
| } |
| |
| if (texColorSpace) { |
| *texColorSpace = sk_ref_sp(fBitmap.colorSpace()); |
| } |
| |
| uint32_t uniqueID; |
| sk_sp<GrTextureProxy> tex = this->refPinnedTextureProxy(&uniqueID); |
| if (tex) { |
| GrTextureAdjuster adjuster(context, fPinnedProxy, |
| fBitmap.alphaType(), fBitmap.bounds(), |
| fPinnedUniqueID, fBitmap.colorSpace()); |
| return adjuster.refTextureProxySafeForParams(params, nullptr, scaleAdjust); |
| } |
| |
| return GrRefCachedBitmapTextureProxy(context, fBitmap, params, scaleAdjust); |
| } |
| #endif |
| |
| #if SK_SUPPORT_GPU |
| |
| sk_sp<GrTextureProxy> SkImage_Raster::refPinnedTextureProxy(uint32_t* uniqueID) const { |
| if (fPinnedProxy) { |
| SkASSERT(fPinnedCount > 0); |
| SkASSERT(fPinnedUniqueID != 0); |
| *uniqueID = fPinnedUniqueID; |
| return fPinnedProxy; |
| } |
| return nullptr; |
| } |
| |
| bool SkImage_Raster::onPinAsTexture(GrContext* ctx) const { |
| if (fPinnedProxy) { |
| SkASSERT(fPinnedCount > 0); |
| SkASSERT(fPinnedUniqueID != 0); |
| } else { |
| SkASSERT(fPinnedCount == 0); |
| SkASSERT(fPinnedUniqueID == 0); |
| fPinnedProxy = GrRefCachedBitmapTextureProxy(ctx, fBitmap, |
| GrSamplerParams::ClampNoFilter(), nullptr); |
| if (!fPinnedProxy) { |
| return false; |
| } |
| fPinnedUniqueID = fBitmap.getGenerationID(); |
| } |
| // Note: we only increment if the texture was successfully pinned |
| ++fPinnedCount; |
| return true; |
| } |
| |
| void SkImage_Raster::onUnpinAsTexture(GrContext* ctx) const { |
| // Note: we always decrement, even if fPinnedTexture is null |
| SkASSERT(fPinnedCount > 0); |
| SkASSERT(fPinnedUniqueID != 0); |
| |
| if (0 == --fPinnedCount) { |
| fPinnedProxy.reset(nullptr); |
| fPinnedUniqueID = 0; |
| } |
| } |
| #endif |
| |
| sk_sp<SkImage> SkImage_Raster::onMakeSubset(const SkIRect& subset) const { |
| // TODO : could consider heurist of sharing pixels, if subset is pretty close to complete |
| |
| SkImageInfo info = SkImageInfo::MakeN32(subset.width(), subset.height(), fBitmap.alphaType()); |
| auto surface(SkSurface::MakeRaster(info)); |
| if (!surface) { |
| return nullptr; |
| } |
| surface->getCanvas()->clear(0); |
| surface->getCanvas()->drawImage(this, SkIntToScalar(-subset.x()), SkIntToScalar(-subset.y()), |
| nullptr); |
| return surface->makeImageSnapshot(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> MakeRasterCopyPriv(const SkPixmap& pmap, uint32_t id) { |
| size_t size; |
| if (!SkImage_Raster::ValidArgs(pmap.info(), pmap.rowBytes(), &size) || !pmap.addr()) { |
| return nullptr; |
| } |
| |
| // Here we actually make a copy of the caller's pixel data |
| sk_sp<SkData> data(SkData::MakeWithCopy(pmap.addr(), size)); |
| return sk_make_sp<SkImage_Raster>(pmap.info(), std::move(data), pmap.rowBytes(), id); |
| } |
| |
| sk_sp<SkImage> SkImage::MakeRasterCopy(const SkPixmap& pmap) { |
| return MakeRasterCopyPriv(pmap, kNeedNewImageUniqueID); |
| } |
| |
| sk_sp<SkImage> SkImage::MakeRasterData(const SkImageInfo& info, sk_sp<SkData> data, |
| size_t rowBytes) { |
| size_t size; |
| if (!SkImage_Raster::ValidArgs(info, rowBytes, &size) || !data) { |
| return nullptr; |
| } |
| |
| // did they give us enough data? |
| if (data->size() < size) { |
| return nullptr; |
| } |
| |
| return sk_make_sp<SkImage_Raster>(info, std::move(data), rowBytes); |
| } |
| |
| sk_sp<SkImage> SkImage::MakeFromRaster(const SkPixmap& pmap, RasterReleaseProc proc, |
| ReleaseContext ctx) { |
| size_t size; |
| if (!SkImage_Raster::ValidArgs(pmap.info(), pmap.rowBytes(), &size) || !pmap.addr()) { |
| return nullptr; |
| } |
| |
| sk_sp<SkData> data(SkData::MakeWithProc(pmap.addr(), size, proc, ctx)); |
| return sk_make_sp<SkImage_Raster>(pmap.info(), std::move(data), pmap.rowBytes()); |
| } |
| |
| sk_sp<SkImage> SkMakeImageFromRasterBitmapPriv(const SkBitmap& bm, SkCopyPixelsMode cpm, |
| uint32_t idForCopy) { |
| if (kAlways_SkCopyPixelsMode == cpm || (!bm.isImmutable() && kNever_SkCopyPixelsMode != cpm)) { |
| SkPixmap pmap; |
| if (bm.peekPixels(&pmap)) { |
| return MakeRasterCopyPriv(pmap, idForCopy); |
| } else { |
| return sk_sp<SkImage>(); |
| } |
| } |
| |
| return sk_make_sp<SkImage_Raster>(bm, kNever_SkCopyPixelsMode == cpm); |
| } |
| |
| sk_sp<SkImage> SkMakeImageFromRasterBitmap(const SkBitmap& bm, SkCopyPixelsMode cpm) { |
| if (!SkImageInfoIsValidAllowNumericalCS(bm.info()) || bm.rowBytes() < bm.info().minRowBytes()) { |
| return nullptr; |
| } |
| |
| return SkMakeImageFromRasterBitmapPriv(bm, cpm, kNeedNewImageUniqueID); |
| } |
| |
| sk_sp<SkImage> SkMakeImageInColorSpace(const SkBitmap& bm, sk_sp<SkColorSpace> dstCS, uint32_t id, |
| SkCopyPixelsMode cpm) { |
| if (!SkImageInfoIsValidAllowNumericalCS(bm.info()) || !bm.getPixels() || |
| bm.rowBytes() < bm.info().minRowBytes() || !dstCS) { |
| return nullptr; |
| } |
| |
| sk_sp<SkColorSpace> srcCS = bm.info().refColorSpace(); |
| if (!srcCS) { |
| // Treat nullptr as sRGB. |
| srcCS = SkColorSpace::MakeSRGB(); |
| } |
| |
| sk_sp<SkImage> image = nullptr; |
| |
| // For the Android use case, this is very likely to be true. |
| if (SkColorSpace::Equals(srcCS.get(), dstCS.get())) { |
| SkASSERT(kNeedNewImageUniqueID == id || bm.getGenerationID() == id); |
| image = SkMakeImageFromRasterBitmapPriv(bm, cpm, id); |
| } else { |
| image = SkImage::MakeFromGenerator(SkColorSpaceXformImageGenerator::Make(bm, dstCS, cpm, |
| id)); |
| } |
| |
| // If the caller suplied an id, we must propagate that to the image we return |
| SkASSERT(kNeedNewImageUniqueID == id || image->uniqueID() == id); |
| return image; |
| } |
| |
| const SkPixelRef* SkBitmapImageGetPixelRef(const SkImage* image) { |
| return ((const SkImage_Raster*)image)->getPixelRef(); |
| } |
| |
| bool SkImage_Raster::onAsLegacyBitmap(SkBitmap* bitmap, LegacyBitmapMode mode) const { |
| if (kRO_LegacyBitmapMode == mode) { |
| // When we're a snapshot from a surface, our bitmap may not be marked immutable |
| // even though logically always we are, but in that case we can't physically share our |
| // pixelref since the caller might call setImmutable() themselves |
| // (thus changing our state). |
| if (fBitmap.isImmutable()) { |
| bitmap->setInfo(fBitmap.info(), fBitmap.rowBytes()); |
| bitmap->setPixelRef(sk_ref_sp(fBitmap.pixelRef()), |
| fBitmap.pixelRefOrigin().x(), |
| fBitmap.pixelRefOrigin().y()); |
| return true; |
| } |
| } |
| return this->INHERITED::onAsLegacyBitmap(bitmap, mode); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| sk_sp<SkImage> SkImage_Raster::onMakeColorSpace(sk_sp<SkColorSpace> target, |
| SkColorType targetColorType, |
| SkTransferFunctionBehavior premulBehavior) const { |
| SkPixmap src; |
| SkAssertResult(fBitmap.peekPixels(&src)); |
| |
| // Treat nullptr srcs as sRGB. |
| if (!src.colorSpace()) { |
| if (target->isSRGB()) { |
| return sk_ref_sp(const_cast<SkImage*>((SkImage*)this)); |
| } |
| |
| src.setColorSpace(SkColorSpace::MakeSRGB()); |
| } |
| |
| SkImageInfo dstInfo = fBitmap.info().makeColorType(targetColorType).makeColorSpace(target); |
| SkBitmap dst; |
| dst.allocPixels(dstInfo); |
| |
| SkAssertResult(dst.writePixels(src, 0, 0, premulBehavior)); |
| dst.setImmutable(); |
| return SkImage::MakeFromBitmap(dst); |
| } |