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// Copyright 2022 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_CAST_STREAMING_RENDERER_RESOURCE_PROVIDER_IMPL_H_
#define COMPONENTS_CAST_STREAMING_RENDERER_RESOURCE_PROVIDER_IMPL_H_
#include <map>
#include <memory>
#include "base/functional/callback.h"
#include "base/functional/callback_forward.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/sequenced_task_runner.h"
#include "components/cast_streaming/common/public/mojom/demuxer_connector.mojom.h"
#include "components/cast_streaming/common/public/mojom/renderer_controller.mojom.h"
#include "components/cast_streaming/renderer/control/renderer_controller_proxy.h"
#include "components/cast_streaming/renderer/frame/demuxer_connector.h"
#include "components/cast_streaming/renderer/public/resource_provider.h"
#include "media/mojo/mojom/renderer.mojom.h"
#include "mojo/public/cpp/bindings/pending_associated_receiver.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "url/gurl.h"
namespace media {
class Demuxer;
} // namespace media
namespace cast_streaming {
// Provides the per-render-frame singleton instances used to pass data and
// playback commands received from the remote sender in the browser process to
// the renderer process.
class ResourceProviderImpl : public ResourceProvider {
public:
ResourceProviderImpl();
~ResourceProviderImpl() override;
ResourceProviderImpl(const ResourceProviderImpl&) = delete;
ResourceProviderImpl& operator=(const ResourceProviderImpl&) = delete;
private:
// Resources to be associated with each RenderFrame instance. This class
// serves to tie their lifetimes to that of the |render_frame| with which
// they are associated, and ensures that their destruction occurs when any
// such resource becomes invalid.
class PerRenderFrameResources {
public:
// |on_error| is the callback to be provided to |renderer_controller_proxy_|
// as the MojoDisconnectCB. It is expected to delete this instance.
explicit PerRenderFrameResources(base::OnceClosure on_error);
~PerRenderFrameResources();
DemuxerConnector& demuxer_connector() { return demuxer_connector_; }
RendererControllerProxy& renderer_controller_proxy() {
return renderer_controller_proxy_;
}
private:
// The singleton associated with forming the mojo connection used to pass
// DecoderBuffers from the browser process into the renderer process's
// DemuxerStream used by the media pipeline.
DemuxerConnector demuxer_connector_;
// The singleton associated with sending playback commands from the browser
// to the renderer process.
RendererControllerProxy renderer_controller_proxy_;
};
void BindRendererController(
mojo::PendingAssociatedReceiver<mojom::RendererController> receiver);
void BindDemuxerConnector(
mojo::PendingAssociatedReceiver<mojom::DemuxerConnector> receiver);
void OnError();
// ResourceProvider overrides.
ReceiverBinder<mojom::RendererController> GetRendererControllerBinder()
override;
ReceiverBinder<mojom::DemuxerConnector> GetDemuxerConnectorBinder() override;
std::unique_ptr<media::Demuxer> MaybeGetDemuxerOverride(
const GURL& url,
scoped_refptr<base::SequencedTaskRunner> media_task_runner) override;
mojo::PendingReceiver<media::mojom::Renderer> GetRendererCommandReceiver()
override;
std::unique_ptr<PerRenderFrameResources> per_frame_resources_;
base::WeakPtrFactory<ResourceProviderImpl> weak_factory_;
};
} // namespace cast_streaming
#endif // COMPONENTS_CAST_STREAMING_RENDERER_RESOURCE_PROVIDER_IMPL_H_
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