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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stddef.h>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/scoped_vector.h"
#include "base/memory/weak_ptr.h"
#include "media/base/demuxer_stream_provider.h"
#include "media/mojo/services/mojo_demuxer_stream_adapter.h"
namespace media {
// DemuxerStreamProvider shim for mojom::DemuxerStreams.
class DemuxerStreamProviderShim : public DemuxerStreamProvider {
// 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.
DemuxerStreamProviderShim(mojom::DemuxerStreamPtr audio,
mojom::DemuxerStreamPtr video,
const base::Closure& demuxer_ready_cb);
~DemuxerStreamProviderShim() override;
// DemuxerStreamProvider interface.
DemuxerStream* GetStream(DemuxerStream::Type type) override;
// 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::Closure demuxer_ready_cb_;
// Scoped 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.
ScopedVector<MojoDemuxerStreamAdapter> streams_;
size_t streams_ready_;
// WeakPtrFactorys must always be the last member variable.
base::WeakPtrFactory<DemuxerStreamProviderShim> weak_factory_;
} // namespace media