| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "Readback.h" |
| |
| #include <sync/sync.h> |
| #include <system/window.h> |
| #include <ui/GraphicBuffer.h> |
| |
| #include "DeferredLayerUpdater.h" |
| #include "Properties.h" |
| #include "hwui/Bitmap.h" |
| #include "pipeline/skia/LayerDrawable.h" |
| #include "renderthread/EglManager.h" |
| #include "renderthread/VulkanManager.h" |
| #include "utils/Color.h" |
| #include "utils/MathUtils.h" |
| #include "utils/TraceUtils.h" |
| |
| using namespace android::uirenderer::renderthread; |
| |
| namespace android { |
| namespace uirenderer { |
| |
| CopyResult Readback::copySurfaceInto(ANativeWindow* window, const Rect& srcRect, SkBitmap* bitmap) { |
| ATRACE_CALL(); |
| // Setup the source |
| AHardwareBuffer* rawSourceBuffer; |
| int rawSourceFence; |
| Matrix4 texTransform; |
| status_t err = ANativeWindow_getLastQueuedBuffer(window, &rawSourceBuffer, &rawSourceFence, |
| texTransform.data); |
| base::unique_fd sourceFence(rawSourceFence); |
| texTransform.invalidateType(); |
| if (err != NO_ERROR) { |
| ALOGW("Failed to get last queued buffer, error = %d", err); |
| return CopyResult::UnknownError; |
| } |
| if (rawSourceBuffer == nullptr) { |
| ALOGW("Surface doesn't have any previously queued frames, nothing to readback from"); |
| return CopyResult::SourceEmpty; |
| } |
| |
| std::unique_ptr<AHardwareBuffer, decltype(&AHardwareBuffer_release)> sourceBuffer( |
| rawSourceBuffer, AHardwareBuffer_release); |
| AHardwareBuffer_Desc description; |
| AHardwareBuffer_describe(sourceBuffer.get(), &description); |
| if (description.usage & AHARDWAREBUFFER_USAGE_PROTECTED_CONTENT) { |
| ALOGW("Surface is protected, unable to copy from it"); |
| return CopyResult::SourceInvalid; |
| } |
| |
| if (sourceFence != -1 && sync_wait(sourceFence.get(), 500 /* ms */) != NO_ERROR) { |
| ALOGE("Timeout (500ms) exceeded waiting for buffer fence, abandoning readback attempt"); |
| return CopyResult::Timeout; |
| } |
| |
| sk_sp<SkColorSpace> colorSpace = DataSpaceToColorSpace( |
| static_cast<android_dataspace>(ANativeWindow_getBuffersDataSpace(window))); |
| sk_sp<SkImage> image = |
| SkImage::MakeFromAHardwareBuffer(sourceBuffer.get(), kPremul_SkAlphaType, colorSpace); |
| return copyImageInto(image, texTransform, srcRect, bitmap); |
| } |
| |
| CopyResult Readback::copyHWBitmapInto(Bitmap* hwBitmap, SkBitmap* bitmap) { |
| LOG_ALWAYS_FATAL_IF(!hwBitmap->isHardware()); |
| |
| Rect srcRect; |
| Matrix4 transform; |
| transform.loadScale(1, -1, 1); |
| transform.translate(0, -1); |
| |
| return copyImageInto(hwBitmap->makeImage(), transform, srcRect, bitmap); |
| } |
| |
| CopyResult Readback::copyLayerInto(DeferredLayerUpdater* deferredLayer, SkBitmap* bitmap) { |
| ATRACE_CALL(); |
| if (!mRenderThread.getGrContext()) { |
| return CopyResult::UnknownError; |
| } |
| |
| // acquire most recent buffer for drawing |
| deferredLayer->updateTexImage(); |
| deferredLayer->apply(); |
| const SkRect dstRect = SkRect::MakeIWH(bitmap->width(), bitmap->height()); |
| CopyResult copyResult = CopyResult::UnknownError; |
| Layer* layer = deferredLayer->backingLayer(); |
| if (layer) { |
| if (copyLayerInto(layer, nullptr, &dstRect, bitmap)) { |
| copyResult = CopyResult::Success; |
| } |
| } |
| return copyResult; |
| } |
| |
| CopyResult Readback::copyImageInto(const sk_sp<SkImage>& image, Matrix4& texTransform, |
| const Rect& srcRect, SkBitmap* bitmap) { |
| ATRACE_CALL(); |
| if (Properties::getRenderPipelineType() == RenderPipelineType::SkiaGL) { |
| mRenderThread.requireGlContext(); |
| } else { |
| mRenderThread.requireVkContext(); |
| } |
| if (!image.get()) { |
| return CopyResult::UnknownError; |
| } |
| int imgWidth = image->width(); |
| int imgHeight = image->height(); |
| sk_sp<GrContext> grContext = sk_ref_sp(mRenderThread.getGrContext()); |
| |
| if (bitmap->colorType() == kRGBA_F16_SkColorType && |
| !grContext->colorTypeSupportedAsSurface(bitmap->colorType())) { |
| ALOGW("Can't copy surface into bitmap, RGBA_F16 config is not supported"); |
| return CopyResult::DestinationInvalid; |
| } |
| |
| CopyResult copyResult = CopyResult::UnknownError; |
| |
| int displayedWidth = imgWidth, displayedHeight = imgHeight; |
| // If this is a 90 or 270 degree rotation we need to swap width/height to get the device |
| // size. |
| if (texTransform[Matrix4::kSkewX] >= 0.5f || texTransform[Matrix4::kSkewX] <= -0.5f) { |
| std::swap(displayedWidth, displayedHeight); |
| } |
| SkRect skiaDestRect = SkRect::MakeWH(bitmap->width(), bitmap->height()); |
| SkRect skiaSrcRect = srcRect.toSkRect(); |
| if (skiaSrcRect.isEmpty()) { |
| skiaSrcRect = SkRect::MakeIWH(displayedWidth, displayedHeight); |
| } |
| bool srcNotEmpty = skiaSrcRect.intersect(SkRect::MakeIWH(displayedWidth, displayedHeight)); |
| if (!srcNotEmpty) { |
| return copyResult; |
| } |
| |
| Layer layer(mRenderThread.renderState(), nullptr, 255, SkBlendMode::kSrc); |
| bool disableFilter = MathUtils::areEqual(skiaSrcRect.width(), skiaDestRect.width()) && |
| MathUtils::areEqual(skiaSrcRect.height(), skiaDestRect.height()); |
| layer.setForceFilter(!disableFilter); |
| layer.setSize(displayedWidth, displayedHeight); |
| texTransform.copyTo(layer.getTexTransform()); |
| layer.setImage(image); |
| if (copyLayerInto(&layer, &skiaSrcRect, &skiaDestRect, bitmap)) { |
| copyResult = CopyResult::Success; |
| } |
| |
| return copyResult; |
| } |
| |
| bool Readback::copyLayerInto(Layer* layer, const SkRect* srcRect, const SkRect* dstRect, |
| SkBitmap* bitmap) { |
| /* This intermediate surface is present to work around a bug in SwiftShader that |
| * prevents us from reading the contents of the layer's texture directly. The |
| * workaround involves first rendering that texture into an intermediate buffer and |
| * then reading from the intermediate buffer into the bitmap. |
| * Another reason to render in an offscreen buffer is to scale and to avoid an issue b/62262733 |
| * with reading incorrect data from EGLImage backed SkImage (likely a driver bug). |
| */ |
| sk_sp<SkSurface> tmpSurface = SkSurface::MakeRenderTarget(mRenderThread.getGrContext(), |
| SkBudgeted::kYes, bitmap->info(), 0, |
| kTopLeft_GrSurfaceOrigin, nullptr); |
| |
| // if we can't generate a GPU surface that matches the destination bitmap (e.g. 565) then we |
| // attempt to do the intermediate rendering step in 8888 |
| if (!tmpSurface.get()) { |
| SkImageInfo tmpInfo = bitmap->info().makeColorType(SkColorType::kN32_SkColorType); |
| tmpSurface = SkSurface::MakeRenderTarget(mRenderThread.getGrContext(), SkBudgeted::kYes, |
| tmpInfo, 0, kTopLeft_GrSurfaceOrigin, nullptr); |
| if (!tmpSurface.get()) { |
| ALOGW("Unable to generate GPU buffer in a format compatible with the provided bitmap"); |
| return false; |
| } |
| } |
| |
| if (!skiapipeline::LayerDrawable::DrawLayer(mRenderThread.getGrContext(), |
| tmpSurface->getCanvas(), layer, srcRect, dstRect, |
| false)) { |
| ALOGW("Unable to draw content from GPU into the provided bitmap"); |
| return false; |
| } |
| |
| if (!tmpSurface->readPixels(*bitmap, 0, 0)) { |
| // if we fail to readback from the GPU directly (e.g. 565) then we attempt to read into |
| // 8888 and then convert that into the destination format before giving up. |
| SkBitmap tmpBitmap; |
| SkImageInfo tmpInfo = bitmap->info().makeColorType(SkColorType::kN32_SkColorType); |
| if (bitmap->info().colorType() == SkColorType::kN32_SkColorType || |
| !tmpBitmap.tryAllocPixels(tmpInfo) || |
| !tmpSurface->readPixels(tmpBitmap, 0, 0) || |
| !tmpBitmap.readPixels(bitmap->info(), bitmap->getPixels(), |
| bitmap->rowBytes(), 0, 0)) { |
| ALOGW("Unable to convert content into the provided bitmap"); |
| return false; |
| } |
| } |
| |
| bitmap->notifyPixelsChanged(); |
| return true; |
| } |
| |
| } /* namespace uirenderer */ |
| } /* namespace android */ |