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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_MIRRORING_SERVICE_MIRRORING_GPU_FACTORIES_FACTORY_H_
#define COMPONENTS_MIRRORING_SERVICE_MIRRORING_GPU_FACTORIES_FACTORY_H_
#include "components/viz/common/gpu/context_lost_observer.h"
#include "media/cast/cast_environment.h"
#include "media/mojo/clients/mojo_gpu_video_accelerator_factories.h"
#include "media/video/gpu_video_accelerator_factories.h"
namespace viz {
class Gpu;
}
namespace mirroring {
// Responsible for creating and owning an instance of the
// MojoGpuVideoAcceleratorFactories implementation. Subscribes to the lifetime
// of the viz context and is responsible for handling lost context
// notifications.
//
// As part of the mirroring service, we generally expect that there is only
// one live factories instance created by this class at a time. When the context
// is lost, the `context_lost_cb` is called and the instance should be assumed
// to be in an invalid state.
class MirroringGpuFactoriesFactory : public viz::ContextLostObserver {
public:
MirroringGpuFactoriesFactory(
scoped_refptr<media::cast::CastEnvironment> cast_environment,
viz::Gpu& gpu,
base::OnceClosure context_lost_cb);
MirroringGpuFactoriesFactory(const MirroringGpuFactoriesFactory&) = delete;
MirroringGpuFactoriesFactory& operator=(const MirroringGpuFactoriesFactory&) =
delete;
MirroringGpuFactoriesFactory(MirroringGpuFactoriesFactory&&);
MirroringGpuFactoriesFactory& operator=(MirroringGpuFactoriesFactory&&);
~MirroringGpuFactoriesFactory() override;
media::GpuVideoAcceleratorFactories& GetInstance();
private:
// Executes bind calls that must occur on the VIDEO thread.
void BindOnVideoThread();
// viz::ContextLostObserver overrides.
void OnContextLost() override;
// Properly destructs `instance_` and `context_provider_` on the VIDEO thread.
void DestroyInstanceOnVideoThread();
scoped_refptr<media::cast::CastEnvironment> cast_environment_;
raw_ref<viz::Gpu> gpu_;
scoped_refptr<viz::ContextProviderCommandBuffer> context_provider_;
base::OnceClosure context_lost_cb_;
std::unique_ptr<media::MojoGpuVideoAcceleratorFactories> instance_;
};
} // namespace mirroring
#endif // COMPONENTS_MIRRORING_SERVICE_MIRRORING_GPU_FACTORIES_FACTORY_H_
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