/*
 * Copyright (C) 2011 Ericsson AB. All rights reserved.
 * Copyright (C) 2012 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer
 *    in the documentation and/or other materials provided with the
 *    distribution.
 * 3. Neither the name of Ericsson nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef RealtimeMediaSourceCenter_h
#define RealtimeMediaSourceCenter_h

#if ENABLE(MEDIA_STREAM)

#include "RealtimeMediaSource.h"
#include "RealtimeMediaSourceSupportedConstraints.h"
#include <wtf/PassRefPtr.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

class MediaConstraints;
class MediaStreamCreationClient;
class MediaStreamTrackSourcesRequestClient;
class RealtimeMediaSourceSettings;
class RealtimeMediaSourceSupportedConstraints;
class TrackSourceInfo;

class RealtimeMediaSourceCenter {
public:
    virtual ~RealtimeMediaSourceCenter();

    WEBCORE_EXPORT static RealtimeMediaSourceCenter& singleton();
    static void setSharedStreamCenterOverride(RealtimeMediaSourceCenter*);

    virtual void validateRequestConstraints(MediaStreamCreationClient*, RefPtr<MediaConstraints>& audioConstraints, RefPtr<MediaConstraints>& videoConstraints) = 0;

    virtual void createMediaStream(MediaStreamCreationClient*, const String& audioDeviceID, const String& videoDeviceID) = 0;

    virtual void createMediaStream(PassRefPtr<MediaStreamCreationClient>, PassRefPtr<MediaConstraints> audioConstraints, PassRefPtr<MediaConstraints> videoConstraints) = 0;

    virtual bool getMediaStreamTrackSources(PassRefPtr<MediaStreamTrackSourcesRequestClient>) = 0;
    
    virtual RefPtr<TrackSourceInfo> sourceWithUID(const String&, RealtimeMediaSource::Type, MediaConstraints*) = 0;

    virtual const RealtimeMediaSourceSupportedConstraints& supportedConstraints() { return m_supportedConstraints; }

protected:
    RealtimeMediaSourceCenter();

    static RealtimeMediaSourceCenter& platformCenter();
    RealtimeMediaSourceSupportedConstraints m_supportedConstraints;
};

} // namespace WebCore

#endif // ENABLE(MEDIA_STREAM)

#endif // RealtimeMediaSourceCenter_h