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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 */
#include "mozilla/RefPtr.h"
#include "ImageContainer.h"
#include "mozilla/layers/GPUVideoTextureClient.h"
#include "mozilla/layers/CompositableClient.h"
#include "mozilla/layers/ImageBridgeChild.h"
namespace mozilla {
namespace gl {
class GLBlitHelper;
namespace layers {
class IGPUVideoSurfaceManager {
virtual ~IGPUVideoSurfaceManager() = default;
virtual already_AddRefed<gfx::SourceSurface> Readback(
const SurfaceDescriptorGPUVideo& aSD) = 0;
virtual void DeallocateSurfaceDescriptor(
const SurfaceDescriptorGPUVideo& aSD) = 0;
// Represents an animated Image that is known to the GPU process.
class GPUVideoImage final : public Image {
friend class gl::GLBlitHelper;
GPUVideoImage(IGPUVideoSurfaceManager* aManager,
const SurfaceDescriptorGPUVideo& aSD, const gfx::IntSize& aSize)
: Image(nullptr, ImageFormat::GPU_VIDEO), mSize(aSize) {
// Create the TextureClient immediately since the GPUVideoTextureData
// is responsible for deallocating the SurfaceDescriptor.
// Use the RECYCLE texture flag, since it's likely that our 'real'
// TextureData (in the decoder thread of the GPU process) is using
// it too, and we want to make sure we don't send the delete message
// until we've stopped being used on the compositor.
mTextureClient = TextureClient::CreateWithData(
new GPUVideoTextureData(aManager, aSD, aSize), TextureFlags::RECYCLE,
virtual ~GPUVideoImage() = default;
gfx::IntSize GetSize() const override { return mSize; }
Maybe<SurfaceDescriptor> GetDesc() override {
return GetDescFromTexClient(mTextureClient);
GPUVideoTextureData* GetData() const {
if (!mTextureClient) {
return nullptr;
TextureData* data = mTextureClient->GetInternalData();
if (!data) {
return nullptr;
return data->AsGPUVideoTextureData();
already_AddRefed<gfx::SourceSurface> GetAsSourceSurface() override {
GPUVideoTextureData* data = GetData();
if (!data) {
return nullptr;
return data->GetAsSourceSurface();
TextureClient* GetTextureClient(KnowsCompositor* aKnowsCompositor) override {
MOZ_ASSERT(aKnowsCompositor == ImageBridgeChild::GetSingleton(),
"Must only use GPUVideo on ImageBridge");
return mTextureClient;
gfx::IntSize mSize;
RefPtr<TextureClient> mTextureClient;
} // namespace layers
} // namespace mozilla