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