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// Copyright (c) 2011 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.
#ifndef MEDIA_BASE_FILTER_FACTORIES_H_
#define MEDIA_BASE_FILTER_FACTORIES_H_
#include<string>
#include "base/callback_old.h"
#include "media/base/media_export.h"
#include "media/base/pipeline_status.h"
namespace media {
class DataSource;
// Asynchronous factory interface for building DataSource objects.
class MEDIA_EXPORT DataSourceFactory {
public:
// Ownership of the DataSource is transferred through this callback.
typedef Callback2<PipelineStatus, DataSource*>::Type BuildCallback;
virtual ~DataSourceFactory();
// Builds a DataSource for |url| and returns it via |callback|.
virtual void Build(const std::string& url, BuildCallback* callback) = 0;
// Makes a copy of this factory.
// NOTE: Pending requests are not cloned.
virtual DataSourceFactory* Clone() const = 0;
};
class Demuxer;
// Asynchronous factory interface for building Demuxer objects.
class MEDIA_EXPORT DemuxerFactory {
public:
// Ownership of the Demuxer is transferred through this callback.
typedef Callback2<PipelineStatus, Demuxer*>::Type BuildCallback;
virtual ~DemuxerFactory();
// Builds a Demuxer for |url| and returns it via |callback|.
virtual void Build(const std::string& url, BuildCallback* callback) = 0;
// Makes a copy of this factory.
// NOTE: Pending requests are not cloned.
virtual DemuxerFactory* Clone() const = 0;
};
} // namespace media
#endif // MEDIA_BASE_FILTER_FACTORIES_H_
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