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/*
* libjingle
* Copyright 2013, Google Inc.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 TALK_MEDIA_WEBRTC_WEBRTCVIDEOENCODERFACTORY_H_
#define TALK_MEDIA_WEBRTC_WEBRTCVIDEOENCODERFACTORY_H_
#include "talk/base/refcount.h"
#include "talk/media/base/codec.h"
#include "webrtc/common_types.h"
namespace webrtc {
class VideoEncoder;
}
namespace cricket {
class WebRtcVideoEncoderFactory {
public:
struct VideoCodec {
webrtc::VideoCodecType type;
std::string name;
int max_width;
int max_height;
int max_fps;
VideoCodec(webrtc::VideoCodecType t, const std::string& nm, int w, int h,
int fr)
: type(t), name(nm), max_width(w), max_height(h), max_fps(fr) {
}
};
class Observer {
public:
// Invoked when the list of supported codecs becomes available.
// This will not be invoked if the list of codecs is already available when
// the factory is installed. Otherwise this will be invoked only once if the
// list of codecs is not yet available when the factory is installed.
virtual void OnCodecsAvailable() = 0;
protected:
virtual ~Observer() {}
};
// Caller takes the ownership of the returned object and it should be released
// by calling DestroyVideoEncoder().
virtual webrtc::VideoEncoder* CreateVideoEncoder(
webrtc::VideoCodecType type) = 0;
virtual ~WebRtcVideoEncoderFactory() {}
// Adds/removes observer to receive OnCodecsChanged notifications.
// Factory must outlive Observer. Observer is responsible for removing itself
// from the Factory by the time its dtor is done.
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Returns a list of supported codecs in order of preference.
// The list is empty if the list of codecs is not yet available.
virtual const std::vector<VideoCodec>& codecs() const = 0;
virtual void DestroyVideoEncoder(webrtc::VideoEncoder* encoder) = 0;
};
} // namespace cricket
#endif // TALK_MEDIA_WEBRTC_WEBRTCVIDEOENCODERFACTORY_H_
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