mirror of
https://github.com/classilla/tenfourfox.git
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117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "SharedRGBImage.h"
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#include "ImageTypes.h" // for ImageFormat::SHARED_RGB, etc
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#include "Shmem.h" // for Shmem
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#include "gfx2DGlue.h" // for ImageFormatToSurfaceFormat, etc
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#include "gfxPlatform.h" // for gfxPlatform, gfxImageFormat
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#include "mozilla/gfx/Point.h" // for IntSIze
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#include "mozilla/layers/BufferTexture.h"
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#include "mozilla/layers/ISurfaceAllocator.h" // for ISurfaceAllocator, etc
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#include "mozilla/layers/ImageClient.h" // for ImageClient
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#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
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#include "mozilla/layers/TextureClient.h" // for BufferTextureClient, etc
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#include "mozilla/layers/ImageBridgeChild.h" // for ImageBridgeChild
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#include "mozilla/mozalloc.h" // for operator delete, etc
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#include "nsAutoPtr.h" // for nsRefPtr
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#include "nsDebug.h" // for NS_WARNING, NS_ASSERTION
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#include "nsISupportsImpl.h" // for Image::AddRef, etc
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#include "nsRect.h" // for mozilla::gfx::IntRect
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// Just big enough for a 1080p RGBA32 frame
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#define MAX_FRAME_SIZE (16 * 1024 * 1024)
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namespace mozilla {
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namespace layers {
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already_AddRefed<Image>
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CreateSharedRGBImage(ImageContainer *aImageContainer,
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gfx::IntSize aSize,
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gfxImageFormat aImageFormat)
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{
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NS_ASSERTION(aImageFormat == gfxImageFormat::ARGB32 ||
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aImageFormat == gfxImageFormat::RGB24 ||
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aImageFormat == gfxImageFormat::RGB16_565,
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"RGB formats supported only");
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if (!aImageContainer) {
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NS_WARNING("No ImageContainer to allocate SharedRGBImage");
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return nullptr;
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}
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RefPtr<SharedRGBImage> rgbImage = aImageContainer->CreateSharedRGBImage();
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if (!rgbImage) {
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NS_WARNING("Failed to create SharedRGBImage");
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return nullptr;
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}
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if (!rgbImage->Allocate(aSize, gfx::ImageFormatToSurfaceFormat(aImageFormat))) {
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NS_WARNING("Failed to allocate a shared image");
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return nullptr;
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}
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return rgbImage.forget();
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}
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SharedRGBImage::SharedRGBImage(ImageClient* aCompositable)
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: Image(nullptr, ImageFormat::SHARED_RGB)
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, mCompositable(aCompositable)
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{
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MOZ_COUNT_CTOR(SharedRGBImage);
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}
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SharedRGBImage::~SharedRGBImage()
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{
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MOZ_COUNT_DTOR(SharedRGBImage);
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if (mCompositable->GetAsyncID() != 0 &&
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!InImageBridgeChildThread()) {
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ADDREF_MANUALLY(mTextureClient);
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ImageBridgeChild::DispatchReleaseTextureClient(mTextureClient);
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mTextureClient = nullptr;
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ImageBridgeChild::DispatchReleaseImageClient(mCompositable.forget().take());
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}
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}
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bool
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SharedRGBImage::Allocate(gfx::IntSize aSize, gfx::SurfaceFormat aFormat)
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{
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mSize = aSize;
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mTextureClient = mCompositable->CreateBufferTextureClient(aFormat, aSize,
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gfx::BackendType::NONE,
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TextureFlags::DEFAULT);
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return !!mTextureClient;
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}
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uint8_t*
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SharedRGBImage::GetBuffer()
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{
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MappedTextureData mapped;
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if (mTextureClient && mTextureClient->BorrowMappedData(mapped)) {
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return mapped.data;
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}
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return 0;
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}
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gfx::IntSize
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SharedRGBImage::GetSize()
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{
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return mSize;
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}
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TextureClient*
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SharedRGBImage::GetTextureClient(CompositableClient* aClient)
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{
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return mTextureClient.get();
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}
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already_AddRefed<gfx::SourceSurface>
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SharedRGBImage::GetAsSourceSurface()
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{
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return nullptr;
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}
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} // namespace layers
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} // namespace mozilla
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