| /* |
| * Copyright 2012 The Android Open Source Project |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "SkImageFilter.h" |
| #include "SkImageFilterCacheKey.h" |
| |
| #include "SkBitmap.h" |
| #include "SkBitmapDevice.h" |
| #include "SkChecksum.h" |
| #include "SkDevice.h" |
| #include "SkLocalMatrixImageFilter.h" |
| #include "SkMatrixImageFilter.h" |
| #include "SkOncePtr.h" |
| #include "SkReadBuffer.h" |
| #include "SkRect.h" |
| #include "SkSpecialImage.h" |
| #include "SkSpecialSurface.h" |
| #include "SkTDynamicHash.h" |
| #include "SkTInternalLList.h" |
| #include "SkValidationUtils.h" |
| #include "SkWriteBuffer.h" |
| #if SK_SUPPORT_GPU |
| #include "GrContext.h" |
| #include "GrDrawContext.h" |
| #include "SkGrPixelRef.h" |
| #include "SkGr.h" |
| #endif |
| |
| #ifdef SK_BUILD_FOR_IOS |
| enum { kDefaultCacheSize = 2 * 1024 * 1024 }; |
| #else |
| enum { kDefaultCacheSize = 128 * 1024 * 1024 }; |
| #endif |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void SkImageFilter::CropRect::toString(SkString* str) const { |
| if (!fFlags) { |
| return; |
| } |
| |
| str->appendf("cropRect ("); |
| if (fFlags & CropRect::kHasLeft_CropEdge) { |
| str->appendf("%.2f, ", fRect.fLeft); |
| } else { |
| str->appendf("X, "); |
| } |
| if (fFlags & CropRect::kHasTop_CropEdge) { |
| str->appendf("%.2f, ", fRect.fTop); |
| } else { |
| str->appendf("X, "); |
| } |
| if (fFlags & CropRect::kHasWidth_CropEdge) { |
| str->appendf("%.2f, ", fRect.width()); |
| } else { |
| str->appendf("X, "); |
| } |
| if (fFlags & CropRect::kHasHeight_CropEdge) { |
| str->appendf("%.2f", fRect.height()); |
| } else { |
| str->appendf("X"); |
| } |
| str->appendf(") "); |
| } |
| #endif |
| |
| void SkImageFilter::CropRect::applyTo(const SkIRect& imageBounds, |
| const SkMatrix& ctm, |
| bool embiggen, |
| SkIRect* cropped) const { |
| *cropped = imageBounds; |
| if (fFlags) { |
| SkRect devCropR; |
| ctm.mapRect(&devCropR, fRect); |
| SkIRect devICropR = devCropR.roundOut(); |
| |
| // Compute the left/top first, in case we need to modify the right/bottom for a missing edge |
| if (fFlags & kHasLeft_CropEdge) { |
| if (embiggen || devICropR.fLeft > cropped->fLeft) { |
| cropped->fLeft = devICropR.fLeft; |
| } |
| } else { |
| devICropR.fRight = cropped->fLeft + devICropR.width(); |
| } |
| if (fFlags & kHasTop_CropEdge) { |
| if (embiggen || devICropR.fTop > cropped->fTop) { |
| cropped->fTop = devICropR.fTop; |
| } |
| } else { |
| devICropR.fBottom = cropped->fTop + devICropR.height(); |
| } |
| if (fFlags & kHasWidth_CropEdge) { |
| if (embiggen || devICropR.fRight < cropped->fRight) { |
| cropped->fRight = devICropR.fRight; |
| } |
| } |
| if (fFlags & kHasHeight_CropEdge) { |
| if (embiggen || devICropR.fBottom < cropped->fBottom) { |
| cropped->fBottom = devICropR.fBottom; |
| } |
| } |
| } |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static int32_t next_image_filter_unique_id() { |
| static int32_t gImageFilterUniqueID; |
| |
| // Never return 0. |
| int32_t id; |
| do { |
| id = sk_atomic_inc(&gImageFilterUniqueID) + 1; |
| } while (0 == id); |
| return id; |
| } |
| |
| void SkImageFilter::Common::allocInputs(int count) { |
| fInputs.reset(count); |
| } |
| |
| void SkImageFilter::Common::detachInputs(SkImageFilter** inputs) { |
| for (int i = 0; i < fInputs.count(); ++i) { |
| inputs[i] = fInputs[i].release(); |
| } |
| } |
| |
| bool SkImageFilter::Common::unflatten(SkReadBuffer& buffer, int expectedCount) { |
| const int count = buffer.readInt(); |
| if (!buffer.validate(count >= 0)) { |
| return false; |
| } |
| if (!buffer.validate(expectedCount < 0 || count == expectedCount)) { |
| return false; |
| } |
| |
| this->allocInputs(count); |
| for (int i = 0; i < count; i++) { |
| if (buffer.readBool()) { |
| fInputs[i] = sk_sp<SkImageFilter>(buffer.readImageFilter()); |
| } |
| if (!buffer.isValid()) { |
| return false; |
| } |
| } |
| SkRect rect; |
| buffer.readRect(&rect); |
| if (!buffer.isValid() || !buffer.validate(SkIsValidRect(rect))) { |
| return false; |
| } |
| |
| uint32_t flags = buffer.readUInt(); |
| fCropRect = CropRect(rect, flags); |
| if (buffer.isVersionLT(SkReadBuffer::kImageFilterNoUniqueID_Version)) { |
| |
| (void) buffer.readUInt(); |
| } |
| return buffer.isValid(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkImageFilter::SkImageFilter(sk_sp<SkImageFilter>* inputs, |
| int inputCount, |
| const CropRect* cropRect) |
| : fInputCount(inputCount), |
| fInputs(new SkImageFilter*[inputCount]), |
| fUsesSrcInput(false), |
| fCropRect(cropRect ? *cropRect : CropRect(SkRect(), 0x0)), |
| fUniqueID(next_image_filter_unique_id()) { |
| for (int i = 0; i < inputCount; ++i) { |
| if (nullptr == inputs[i] || inputs[i]->usesSrcInput()) { |
| fUsesSrcInput = true; |
| } |
| fInputs[i] = SkSafeRef(inputs[i].get()); |
| } |
| } |
| |
| SkImageFilter::SkImageFilter(int inputCount, SkImageFilter** inputs, const CropRect* cropRect) |
| : fInputCount(inputCount), |
| fInputs(new SkImageFilter*[inputCount]), |
| fUsesSrcInput(false), |
| fCropRect(cropRect ? *cropRect : CropRect(SkRect(), 0x0)), |
| fUniqueID(next_image_filter_unique_id()) { |
| for (int i = 0; i < inputCount; ++i) { |
| if (nullptr == inputs[i] || inputs[i]->usesSrcInput()) { |
| fUsesSrcInput = true; |
| } |
| fInputs[i] = SkSafeRef(inputs[i]); |
| } |
| } |
| |
| SkImageFilter::~SkImageFilter() { |
| for (int i = 0; i < fInputCount; i++) { |
| SkSafeUnref(fInputs[i]); |
| } |
| delete[] fInputs; |
| Cache::Get()->purgeByKeys(fCacheKeys.begin(), fCacheKeys.count()); |
| } |
| |
| SkImageFilter::SkImageFilter(int inputCount, SkReadBuffer& buffer) |
| : fUsesSrcInput(false) |
| , fUniqueID(next_image_filter_unique_id()) { |
| Common common; |
| if (common.unflatten(buffer, inputCount)) { |
| fCropRect = common.cropRect(); |
| fInputCount = common.inputCount(); |
| fInputs = new SkImageFilter* [fInputCount]; |
| common.detachInputs(fInputs); |
| for (int i = 0; i < fInputCount; ++i) { |
| if (nullptr == fInputs[i] || fInputs[i]->usesSrcInput()) { |
| fUsesSrcInput = true; |
| } |
| } |
| } else { |
| fInputCount = 0; |
| fInputs = nullptr; |
| } |
| } |
| |
| void SkImageFilter::flatten(SkWriteBuffer& buffer) const { |
| buffer.writeInt(fInputCount); |
| for (int i = 0; i < fInputCount; i++) { |
| SkImageFilter* input = this->getInput(i); |
| buffer.writeBool(input != nullptr); |
| if (input != nullptr) { |
| buffer.writeFlattenable(input); |
| } |
| } |
| buffer.writeRect(fCropRect.rect()); |
| buffer.writeUInt(fCropRect.flags()); |
| } |
| |
| sk_sp<SkSpecialImage> SkImageFilter::filterImage(SkSpecialImage* src, const Context& context, |
| SkIPoint* offset) const { |
| SkASSERT(src && offset); |
| |
| uint32_t srcGenID = fUsesSrcInput ? src->uniqueID() : 0; |
| const SkIRect srcSubset = fUsesSrcInput ? src->subset() : SkIRect::MakeWH(0, 0); |
| Cache::Key key(fUniqueID, context.ctm(), context.clipBounds(), srcGenID, srcSubset); |
| if (context.cache()) { |
| SkSpecialImage* result = context.cache()->get(key, offset); |
| if (result) { |
| return sk_sp<SkSpecialImage>(SkRef(result)); |
| } |
| } |
| |
| sk_sp<SkSpecialImage> result(this->onFilterImage(src, context, offset)); |
| if (result && context.cache()) { |
| context.cache()->set(key, result.get(), *offset); |
| SkAutoMutexAcquire mutex(fMutex); |
| fCacheKeys.push_back(key); |
| } |
| |
| return result; |
| } |
| |
| bool SkImageFilter::filterImageDeprecated(Proxy* proxy, const SkBitmap& src, |
| const Context& context, |
| SkBitmap* result, SkIPoint* offset) const { |
| SkASSERT(result); |
| SkASSERT(offset); |
| uint32_t srcGenID = fUsesSrcInput ? src.getGenerationID() : 0; |
| Cache::Key key(fUniqueID, context.ctm(), context.clipBounds(), |
| srcGenID, SkIRect::MakeWH(0, 0)); |
| if (context.cache()) { |
| if (context.cache()->get(key, result, offset)) { |
| return true; |
| } |
| } |
| /* |
| * Give the proxy first shot at the filter. If it returns false, ask |
| * the filter to do it. |
| */ |
| if ((proxy && proxy->filterImage(this, src, context, result, offset)) || |
| this->onFilterImageDeprecated(proxy, src, context, result, offset)) { |
| if (context.cache()) { |
| context.cache()->set(key, *result, *offset); |
| SkAutoMutexAcquire mutex(fMutex); |
| fCacheKeys.push_back(key); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| bool SkImageFilter::filterInputDeprecated(int index, Proxy* proxy, const SkBitmap& src, |
| const Context& ctx, |
| SkBitmap* result, SkIPoint* offset) const { |
| SkImageFilter* input = this->getInput(index); |
| if (!input) { |
| return true; |
| } |
| |
| // SRGBTODO: Don't handle sRGB here, in anticipation of this code path being deleted. |
| sk_sp<SkSpecialImage> specialSrc(SkSpecialImage::internal_fromBM(proxy, src, nullptr)); |
| if (!specialSrc) { |
| return false; |
| } |
| |
| sk_sp<SkSpecialImage> tmp(input->onFilterImage(specialSrc.get(), |
| this->mapContext(ctx), |
| offset)); |
| if (!tmp) { |
| return false; |
| } |
| |
| return tmp->internal_getBM(result); |
| } |
| |
| SkIRect SkImageFilter::filterBounds(const SkIRect& src, const SkMatrix& ctm, |
| MapDirection direction) const { |
| if (kReverse_MapDirection == direction) { |
| SkIRect bounds = this->onFilterNodeBounds(src, ctm, direction); |
| return this->onFilterBounds(bounds, ctm, direction); |
| } else { |
| SkIRect bounds = this->onFilterBounds(src, ctm, direction); |
| bounds = this->onFilterNodeBounds(bounds, ctm, direction); |
| SkIRect dst; |
| this->getCropRect().applyTo(bounds, ctm, this->affectsTransparentBlack(), &dst); |
| return dst; |
| } |
| } |
| |
| SkRect SkImageFilter::computeFastBounds(const SkRect& src) const { |
| if (0 == fInputCount) { |
| return src; |
| } |
| SkRect combinedBounds = this->getInput(0) ? this->getInput(0)->computeFastBounds(src) : src; |
| for (int i = 1; i < fInputCount; i++) { |
| SkImageFilter* input = this->getInput(i); |
| if (input) { |
| combinedBounds.join(input->computeFastBounds(src)); |
| } else { |
| combinedBounds.join(src); |
| } |
| } |
| return combinedBounds; |
| } |
| |
| bool SkImageFilter::canComputeFastBounds() const { |
| if (this->affectsTransparentBlack()) { |
| return false; |
| } |
| for (int i = 0; i < fInputCount; i++) { |
| SkImageFilter* input = this->getInput(i); |
| if (input && !input->canComputeFastBounds()) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool SkImageFilter::onFilterImageDeprecated(Proxy*, const SkBitmap&, const Context&, |
| SkBitmap*, SkIPoint*) const { |
| // Only classes that now use the new SkSpecialImage-based path will not have |
| // onFilterImageDeprecated methods. For those classes we should never be |
| // calling this method. |
| SkASSERT(0); |
| return false; |
| } |
| |
| // SkImageFilter-derived classes that do not yet have their own onFilterImage |
| // implementation convert back to calling the deprecated filterImage method |
| sk_sp<SkSpecialImage> SkImageFilter::onFilterImage(SkSpecialImage* src, const Context& ctx, |
| SkIPoint* offset) const { |
| SkBitmap srcBM, resultBM; |
| |
| if (!src->internal_getBM(&srcBM)) { |
| return nullptr; |
| } |
| |
| // This is the only valid call to the old filterImage path |
| if (!this->filterImageDeprecated(src->internal_getProxy(), srcBM, ctx, &resultBM, offset)) { |
| return nullptr; |
| } |
| |
| return SkSpecialImage::internal_fromBM(src->internal_getProxy(), resultBM, &src->props()); |
| } |
| |
| bool SkImageFilter::canFilterImageGPU() const { |
| return this->asFragmentProcessor(nullptr, nullptr, SkMatrix::I(), SkIRect()); |
| } |
| |
| bool SkImageFilter::filterImageGPUDeprecated(Proxy* proxy, const SkBitmap& src, const Context& ctx, |
| SkBitmap* result, SkIPoint* offset) const { |
| #if SK_SUPPORT_GPU |
| SkBitmap input = src; |
| SkASSERT(fInputCount == 1); |
| SkIPoint srcOffset = SkIPoint::Make(0, 0); |
| if (!this->filterInputGPUDeprecated(0, proxy, src, ctx, &input, &srcOffset)) { |
| return false; |
| } |
| GrTexture* srcTexture = input.getTexture(); |
| SkIRect bounds; |
| if (!this->applyCropRectDeprecated(ctx, proxy, input, &srcOffset, &bounds, &input)) { |
| return false; |
| } |
| GrContext* context = srcTexture->getContext(); |
| |
| GrSurfaceDesc desc; |
| desc.fFlags = kRenderTarget_GrSurfaceFlag, |
| desc.fWidth = bounds.width(); |
| desc.fHeight = bounds.height(); |
| desc.fConfig = kRGBA_8888_GrPixelConfig; |
| |
| SkAutoTUnref<GrTexture> dst(context->textureProvider()->createApproxTexture(desc)); |
| if (!dst) { |
| return false; |
| } |
| |
| GrFragmentProcessor* fp; |
| offset->fX = bounds.left(); |
| offset->fY = bounds.top(); |
| bounds.offset(-srcOffset); |
| SkMatrix matrix(ctx.ctm()); |
| matrix.postTranslate(SkIntToScalar(-bounds.left()), SkIntToScalar(-bounds.top())); |
| GrPaint paint; |
| // SRGBTODO: Don't handle sRGB here, in anticipation of this code path being deleted. |
| if (this->asFragmentProcessor(&fp, srcTexture, matrix, bounds)) { |
| SkASSERT(fp); |
| paint.addColorFragmentProcessor(fp)->unref(); |
| paint.setPorterDuffXPFactory(SkXfermode::kSrc_Mode); |
| |
| SkAutoTUnref<GrDrawContext> drawContext(context->drawContext(dst->asRenderTarget())); |
| if (drawContext) { |
| SkRect srcRect = SkRect::Make(bounds); |
| SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height()); |
| GrClip clip(dstRect); |
| drawContext->fillRectToRect(clip, paint, SkMatrix::I(), dstRect, srcRect); |
| |
| GrWrapTextureInBitmap(dst, bounds.width(), bounds.height(), false, result); |
| return true; |
| } |
| } |
| #endif |
| return false; |
| } |
| |
| bool SkImageFilter::asAColorFilter(SkColorFilter** filterPtr) const { |
| SkASSERT(nullptr != filterPtr); |
| if (!this->isColorFilterNode(filterPtr)) { |
| return false; |
| } |
| if (nullptr != this->getInput(0) || (*filterPtr)->affectsTransparentBlack()) { |
| (*filterPtr)->unref(); |
| return false; |
| } |
| return true; |
| } |
| |
| bool SkImageFilter::applyCropRect(const Context& ctx, const SkIRect& srcBounds, |
| SkIRect* dstBounds) const { |
| SkIRect temp = this->onFilterNodeBounds(srcBounds, ctx.ctm(), kForward_MapDirection); |
| fCropRect.applyTo(temp, ctx.ctm(), this->affectsTransparentBlack(), dstBounds); |
| // Intersect against the clip bounds, in case the crop rect has |
| // grown the bounds beyond the original clip. This can happen for |
| // example in tiling, where the clip is much smaller than the filtered |
| // primitive. If we didn't do this, we would be processing the filter |
| // at the full crop rect size in every tile. |
| return dstBounds->intersect(ctx.clipBounds()); |
| } |
| |
| bool SkImageFilter::applyCropRectDeprecated(const Context& ctx, Proxy* proxy, const SkBitmap& src, |
| SkIPoint* srcOffset, SkIRect* bounds, |
| SkBitmap* dst) const { |
| SkIRect srcBounds; |
| src.getBounds(&srcBounds); |
| srcBounds.offset(*srcOffset); |
| SkIRect dstBounds = this->onFilterNodeBounds(srcBounds, ctx.ctm(), kForward_MapDirection); |
| fCropRect.applyTo(dstBounds, ctx.ctm(), this->affectsTransparentBlack(), bounds); |
| if (!bounds->intersect(ctx.clipBounds())) { |
| return false; |
| } |
| |
| if (srcBounds.contains(*bounds)) { |
| *dst = src; |
| return true; |
| } else { |
| SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds->width(), bounds->height())); |
| if (!device) { |
| return false; |
| } |
| SkCanvas canvas(device); |
| canvas.clear(0x00000000); |
| canvas.drawBitmap(src, srcOffset->x() - bounds->x(), srcOffset->y() - bounds->y()); |
| *srcOffset = SkIPoint::Make(bounds->x(), bounds->y()); |
| *dst = device->accessBitmap(false); |
| return true; |
| } |
| } |
| |
| // Return a larger (newWidth x newHeight) copy of 'src' with black padding |
| // around it. |
| static sk_sp<SkSpecialImage> pad_image(SkSpecialImage* src, |
| int newWidth, int newHeight, int offX, int offY) { |
| |
| SkImageInfo info = SkImageInfo::MakeN32Premul(newWidth, newHeight); |
| sk_sp<SkSpecialSurface> surf(src->makeSurface(info)); |
| if (!surf) { |
| return nullptr; |
| } |
| |
| SkCanvas* canvas = surf->getCanvas(); |
| SkASSERT(canvas); |
| |
| canvas->clear(0x0); |
| |
| src->draw(canvas, offX, offY, nullptr); |
| |
| return surf->makeImageSnapshot(); |
| } |
| |
| sk_sp<SkSpecialImage> SkImageFilter::applyCropRect(const Context& ctx, |
| SkSpecialImage* src, |
| SkIPoint* srcOffset, |
| SkIRect* bounds) const { |
| SkIRect srcBounds; |
| srcBounds = SkIRect::MakeXYWH(srcOffset->fX, srcOffset->fY, src->width(), src->height()); |
| |
| SkIRect dstBounds = this->onFilterNodeBounds(srcBounds, ctx.ctm(), kForward_MapDirection); |
| fCropRect.applyTo(dstBounds, ctx.ctm(), this->affectsTransparentBlack(), bounds); |
| if (!bounds->intersect(ctx.clipBounds())) { |
| return nullptr; |
| } |
| |
| if (srcBounds.contains(*bounds)) { |
| return sk_sp<SkSpecialImage>(SkRef(src)); |
| } else { |
| sk_sp<SkSpecialImage> img(pad_image(src, |
| bounds->width(), bounds->height(), |
| srcOffset->x() - bounds->x(), |
| srcOffset->y() - bounds->y())); |
| *srcOffset = SkIPoint::Make(bounds->x(), bounds->y()); |
| return img; |
| } |
| } |
| |
| SkIRect SkImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm, |
| MapDirection direction) const { |
| if (fInputCount < 1) { |
| return src; |
| } |
| |
| SkIRect totalBounds; |
| for (int i = 0; i < fInputCount; ++i) { |
| SkImageFilter* filter = this->getInput(i); |
| SkIRect rect = filter ? filter->filterBounds(src, ctm, direction) : src; |
| if (0 == i) { |
| totalBounds = rect; |
| } else { |
| totalBounds.join(rect); |
| } |
| } |
| |
| return totalBounds; |
| } |
| |
| SkIRect SkImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix&, MapDirection) const { |
| return src; |
| } |
| |
| |
| SkImageFilter::Context SkImageFilter::mapContext(const Context& ctx) const { |
| SkIRect clipBounds = this->onFilterNodeBounds(ctx.clipBounds(), ctx.ctm(), |
| MapDirection::kReverse_MapDirection); |
| return Context(ctx.ctm(), clipBounds, ctx.cache()); |
| } |
| |
| bool SkImageFilter::asFragmentProcessor(GrFragmentProcessor**, GrTexture*, |
| const SkMatrix&, const SkIRect&) const { |
| return false; |
| } |
| |
| sk_sp<SkImageFilter> SkImageFilter::MakeMatrixFilter(const SkMatrix& matrix, |
| SkFilterQuality filterQuality, |
| sk_sp<SkImageFilter> input) { |
| return SkMatrixImageFilter::Make(matrix, filterQuality, std::move(input)); |
| } |
| |
| sk_sp<SkImageFilter> SkImageFilter::makeWithLocalMatrix(const SkMatrix& matrix) const { |
| // SkLocalMatrixImageFilter takes SkImage* in its factory, but logically that parameter |
| // is *always* treated as a const ptr. Hence the const-cast here. |
| // |
| SkImageFilter* nonConstThis = const_cast<SkImageFilter*>(this); |
| return SkLocalMatrixImageFilter::Make(matrix, sk_ref_sp<SkImageFilter>(nonConstThis)); |
| } |
| |
| sk_sp<SkSpecialImage> SkImageFilter::filterInput(int index, |
| SkSpecialImage* src, |
| const Context& ctx, |
| SkIPoint* offset) const { |
| SkImageFilter* input = this->getInput(index); |
| if (!input) { |
| return sk_sp<SkSpecialImage>(SkRef(src)); |
| } |
| |
| sk_sp<SkSpecialImage> result(input->filterImage(src, this->mapContext(ctx), offset)); |
| |
| #if SK_SUPPORT_GPU |
| if (src->peekTexture() && result && !result->peekTexture()) { |
| // Keep the result on the GPU - this is still required for some |
| // image filters that don't support GPU in all cases |
| GrContext* context = src->peekTexture()->getContext(); |
| return result->makeTextureImage(src->internal_getProxy(), context); |
| } |
| #endif |
| |
| return result; |
| } |
| |
| #if SK_SUPPORT_GPU |
| |
| bool SkImageFilter::filterInputGPUDeprecated(int index, SkImageFilter::Proxy* proxy, |
| const SkBitmap& src, const Context& ctx, |
| SkBitmap* result, SkIPoint* offset) const { |
| SkImageFilter* input = this->getInput(index); |
| if (!input) { |
| return true; |
| } |
| |
| // SRGBTODO: Don't handle sRGB here, in anticipation of this code path being deleted. |
| sk_sp<SkSpecialImage> specialSrc(SkSpecialImage::internal_fromBM(proxy, src, nullptr)); |
| if (!specialSrc) { |
| return false; |
| } |
| |
| sk_sp<SkSpecialImage> tmp(input->onFilterImage(specialSrc.get(), |
| this->mapContext(ctx), |
| offset)); |
| if (!tmp) { |
| return false; |
| } |
| |
| if (!tmp->internal_getBM(result)) { |
| return false; |
| } |
| |
| if (!result->getTexture()) { |
| GrContext* context = src.getTexture()->getContext(); |
| |
| const SkImageInfo info = result->info(); |
| if (kUnknown_SkColorType == info.colorType()) { |
| return false; |
| } |
| SkAutoTUnref<GrTexture> resultTex( |
| GrRefCachedBitmapTexture(context, *result, GrTextureParams::ClampNoFilter())); |
| if (!resultTex) { |
| return false; |
| } |
| result->setPixelRef(new SkGrPixelRef(info, resultTex))->unref(); |
| } |
| |
| return true; |
| } |
| #endif |
| |
| namespace { |
| |
| class CacheImpl : public SkImageFilter::Cache { |
| public: |
| CacheImpl(size_t maxBytes) : fMaxBytes(maxBytes), fCurrentBytes(0) { } |
| ~CacheImpl() override { |
| SkTDynamicHash<Value, Key>::Iter iter(&fLookup); |
| |
| while (!iter.done()) { |
| Value* v = &*iter; |
| ++iter; |
| delete v; |
| } |
| } |
| struct Value { |
| Value(const Key& key, const SkBitmap& bitmap, const SkIPoint& offset) |
| : fKey(key), fBitmap(bitmap), fOffset(offset) {} |
| Value(const Key& key, SkSpecialImage* image, const SkIPoint& offset) |
| : fKey(key), fImage(SkRef(image)), fOffset(offset) {} |
| |
| Key fKey; |
| SkBitmap fBitmap; |
| SkAutoTUnref<SkSpecialImage> fImage; |
| SkIPoint fOffset; |
| static const Key& GetKey(const Value& v) { |
| return v.fKey; |
| } |
| static uint32_t Hash(const Key& key) { |
| return SkChecksum::Murmur3(reinterpret_cast<const uint32_t*>(&key), sizeof(Key)); |
| } |
| SK_DECLARE_INTERNAL_LLIST_INTERFACE(Value); |
| }; |
| |
| bool get(const Key& key, SkBitmap* result, SkIPoint* offset) const override { |
| SkAutoMutexAcquire mutex(fMutex); |
| if (Value* v = fLookup.find(key)) { |
| *result = v->fBitmap; |
| *offset = v->fOffset; |
| if (v != fLRU.head()) { |
| fLRU.remove(v); |
| fLRU.addToHead(v); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| SkSpecialImage* get(const Key& key, SkIPoint* offset) const override { |
| SkAutoMutexAcquire mutex(fMutex); |
| if (Value* v = fLookup.find(key)) { |
| *offset = v->fOffset; |
| if (v != fLRU.head()) { |
| fLRU.remove(v); |
| fLRU.addToHead(v); |
| } |
| return v->fImage; |
| } |
| return nullptr; |
| } |
| |
| void set(const Key& key, const SkBitmap& result, const SkIPoint& offset) override { |
| SkAutoMutexAcquire mutex(fMutex); |
| if (Value* v = fLookup.find(key)) { |
| this->removeInternal(v); |
| } |
| Value* v = new Value(key, result, offset); |
| fLookup.add(v); |
| fLRU.addToHead(v); |
| fCurrentBytes += result.getSize(); |
| while (fCurrentBytes > fMaxBytes) { |
| Value* tail = fLRU.tail(); |
| SkASSERT(tail); |
| if (tail == v) { |
| break; |
| } |
| this->removeInternal(tail); |
| } |
| } |
| |
| void set(const Key& key, SkSpecialImage* image, const SkIPoint& offset) override { |
| SkAutoMutexAcquire mutex(fMutex); |
| if (Value* v = fLookup.find(key)) { |
| this->removeInternal(v); |
| } |
| Value* v = new Value(key, image, offset); |
| fLookup.add(v); |
| fLRU.addToHead(v); |
| fCurrentBytes += image->getSize(); |
| while (fCurrentBytes > fMaxBytes) { |
| Value* tail = fLRU.tail(); |
| SkASSERT(tail); |
| if (tail == v) { |
| break; |
| } |
| this->removeInternal(tail); |
| } |
| } |
| |
| void purge() override { |
| SkAutoMutexAcquire mutex(fMutex); |
| while (fCurrentBytes > 0) { |
| Value* tail = fLRU.tail(); |
| SkASSERT(tail); |
| this->removeInternal(tail); |
| } |
| } |
| |
| void purgeByKeys(const Key keys[], int count) override { |
| SkAutoMutexAcquire mutex(fMutex); |
| for (int i = 0; i < count; i++) { |
| if (Value* v = fLookup.find(keys[i])) { |
| this->removeInternal(v); |
| } |
| } |
| } |
| |
| private: |
| void removeInternal(Value* v) { |
| if (v->fImage) { |
| fCurrentBytes -= v->fImage->getSize(); |
| } else { |
| fCurrentBytes -= v->fBitmap.getSize(); |
| } |
| fLRU.remove(v); |
| fLookup.remove(v->fKey); |
| delete v; |
| } |
| private: |
| SkTDynamicHash<Value, Key> fLookup; |
| mutable SkTInternalLList<Value> fLRU; |
| size_t fMaxBytes; |
| size_t fCurrentBytes; |
| mutable SkMutex fMutex; |
| }; |
| |
| } // namespace |
| |
| SkImageFilter::Cache* SkImageFilter::Cache::Create(size_t maxBytes) { |
| return new CacheImpl(maxBytes); |
| } |
| |
| SK_DECLARE_STATIC_ONCE_PTR(SkImageFilter::Cache, cache); |
| SkImageFilter::Cache* SkImageFilter::Cache::Get() { |
| return cache.get([]{ return SkImageFilter::Cache::Create(kDefaultCacheSize); }); |
| } |
| |
| void SkImageFilter::PurgeCache() { |
| Cache::Get()->purge(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| SkBaseDevice* SkImageFilter::DeviceProxy::createDevice(int w, int h, TileUsage usage) { |
| SkBaseDevice::CreateInfo cinfo(SkImageInfo::MakeN32Premul(w, h), |
| kPossible_TileUsage == usage ? SkBaseDevice::kPossible_TileUsage |
| : SkBaseDevice::kNever_TileUsage, |
| kUnknown_SkPixelGeometry, |
| false, /* preserveLCDText */ |
| true /*forImageFilter*/); |
| SkBaseDevice* dev = fDevice->onCreateDevice(cinfo, nullptr); |
| if (nullptr == dev) { |
| const SkSurfaceProps surfaceProps(fDevice->fSurfaceProps.flags(), |
| kUnknown_SkPixelGeometry); |
| dev = SkBitmapDevice::Create(cinfo.fInfo, surfaceProps); |
| } |
| return dev; |
| } |
| |
| bool SkImageFilter::DeviceProxy::filterImage(const SkImageFilter* filter, const SkBitmap& src, |
| const SkImageFilter::Context& ctx, |
| SkBitmap* result, SkIPoint* offset) { |
| return fDevice->filterImage(filter, src, ctx, result, offset); |
| } |
