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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef MEDIA_MOJO_SERVICES_MEDIA_RESOURCE_SHIM_H_
#define MEDIA_MOJO_SERVICES_MEDIA_RESOURCE_SHIM_H_
#include <stddef.h>
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
#include "media/base/media_resource.h"
#include "media/mojo/services/mojo_demuxer_stream_adapter.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
namespace media {
// MediaResource shim for mojom::DemuxerStreams.
class MediaResourceShim : public MediaResource {
public:
// Constructs the shim; at least a single audio or video stream must be
// provided. |demuxer_ready_cb| will be called once the streams have been
// initialized. Calling any method before then is an error.
MediaResourceShim(
std::vector<mojo::PendingRemote<mojom::DemuxerStream>> streams,
base::OnceClosure demuxer_ready_cb);
MediaResourceShim(const MediaResourceShim&) = delete;
MediaResourceShim& operator=(const MediaResourceShim&) = delete;
~MediaResourceShim() override;
// MediaResource interface.
std::vector<DemuxerStream*> GetAllStreams() override;
private:
// Called as each mojom::DemuxerStream becomes ready. Once all streams
// are ready it will fire the |demuxer_ready_cb_| provided during
// construction.
void OnStreamReady();
// Stored copy the ready callback provided during construction; cleared once
// all streams are ready.
base::OnceClosure demuxer_ready_cb_;
// Container for demuxer stream adapters which interface with the mojo level
// demuxer streams. |streams_ready_| tracks how many streams are ready and is
// used by OnStreamReady() to know when |demuxer_ready_cb_| should be fired.
std::vector<std::unique_ptr<MojoDemuxerStreamAdapter>> streams_;
size_t streams_ready_;
// WeakPtrFactorys must always be the last member variable.
base::WeakPtrFactory<MediaResourceShim> weak_factory_{this};
};
} // namespace media
#endif // MEDIA_MOJO_SERVICES_MEDIA_RESOURCE_SHIM_H_
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