gecko/gfx/layers/ipc/SharedRGBImage.cpp

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SharedRGBImage.h"
#include "ImageTypes.h" // for ImageFormat::SHARED_RGB, etc
#include "Shmem.h" // for Shmem
#include "gfx2DGlue.h" // for ImageFormatToSurfaceFormat, etc
#include "gfxPlatform.h" // for gfxPlatform, gfxImageFormat
#include "mozilla/layers/ISurfaceAllocator.h" // for ISurfaceAllocator, etc
#include "mozilla/layers/ImageClient.h" // for ImageClient
#include "mozilla/layers/ImageDataSerializer.h" // for ImageDataSerializer
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor, etc
#include "mozilla/layers/TextureClient.h" // for BufferTextureClient, etc
#include "mozilla/layers/ImageBridgeChild.h" // for ImageBridgeChild
#include "mozilla/mozalloc.h" // for operator delete, etc
#include "nsAutoPtr.h" // for nsRefPtr
#include "nsDebug.h" // for NS_WARNING, NS_ASSERTION
#include "nsISupportsImpl.h" // for Image::AddRef, etc
#include "nsRect.h" // for nsIntRect
#include "nsSize.h" // for nsIntSize
// Just big enough for a 1080p RGBA32 frame
#define MAX_FRAME_SIZE (16 * 1024 * 1024)
namespace mozilla {
namespace layers {
already_AddRefed<Image>
CreateSharedRGBImage(ImageContainer *aImageContainer,
nsIntSize aSize,
gfxImageFormat aImageFormat)
{
NS_ASSERTION(aImageFormat == gfxImageFormat::ARGB32 ||
aImageFormat == gfxImageFormat::RGB24 ||
aImageFormat == gfxImageFormat::RGB16_565,
"RGB formats supported only");
if (!aImageContainer) {
NS_WARNING("No ImageContainer to allocate SharedRGBImage");
return nullptr;
}
nsRefPtr<Image> image = aImageContainer->CreateImage(ImageFormat::SHARED_RGB);
if (!image) {
NS_WARNING("Failed to create SharedRGBImage");
return nullptr;
}
nsRefPtr<SharedRGBImage> rgbImage = static_cast<SharedRGBImage*>(image.get());
if (!rgbImage->Allocate(gfx::ToIntSize(aSize),
gfx::ImageFormatToSurfaceFormat(aImageFormat))) {
NS_WARNING("Failed to allocate a shared image");
return nullptr;
}
return image.forget();
}
SharedRGBImage::SharedRGBImage(ImageClient* aCompositable)
: Image(nullptr, ImageFormat::SHARED_RGB)
, mCompositable(aCompositable)
{
MOZ_COUNT_CTOR(SharedRGBImage);
}
SharedRGBImage::~SharedRGBImage()
{
MOZ_COUNT_DTOR(SharedRGBImage);
if (mCompositable->GetAsyncID() != 0 &&
!InImageBridgeChildThread()) {
ImageBridgeChild::DispatchReleaseTextureClient(mTextureClient.forget().drop());
ImageBridgeChild::DispatchReleaseImageClient(mCompositable.forget().drop());
}
}
bool
SharedRGBImage::Allocate(gfx::IntSize aSize, gfx::SurfaceFormat aFormat)
{
mSize = aSize;
mTextureClient = mCompositable->CreateBufferTextureClient(aFormat);
return mTextureClient->AllocateForSurface(aSize);
}
uint8_t*
SharedRGBImage::GetBuffer()
{
if (!mTextureClient) {
return nullptr;
}
ImageDataSerializer serializer(mTextureClient->GetBuffer(), mTextureClient->GetBufferSize());
return serializer.GetData();
}
gfx::IntSize
SharedRGBImage::GetSize()
{
return mSize;
}
size_t
SharedRGBImage::GetBufferSize()
{
return mTextureClient ? mTextureClient->GetBufferSize()
: 0;
}
TextureClient*
SharedRGBImage::GetTextureClient(CompositableClient* aClient)
{
return mTextureClient.get();
}
TemporaryRef<gfx::SourceSurface>
SharedRGBImage::GetAsSourceSurface()
{
return nullptr;
}
} // namespace layers
} // namespace mozilla