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/*
* 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 WebRTCStatsRequest_h
#define WebRTCStatsRequest_h
#include "WebCommon.h"
#include "WebPrivatePtr.h"
#include "WebString.h"
namespace WebCore {
class RTCStatsRequest;
}
namespace blink {
class WebMediaStreamTrack;
class WebMediaStream;
class WebRTCStatsResponse;
// The WebRTCStatsRequest class represents a JavaScript call on
// RTCPeerConnection.getStats(). The user of this API will use
// the calls on this class and WebRTCStatsResponse to fill in the
// data that will be returned via a callback to the user in an
// RTCStatsResponse structure.
//
// The typical usage pattern is:
// WebRTCStatsRequest request = <from somewhere>
// WebRTCStatsResponse response = request.createResponse();
//
// For each item on which statistics are going to be reported:
// size_t reportIndex = response.addReport();
// Add local information:
// size_t elementIndex = response.addElement(reportIndex, true, dateNow());
// For each statistic being reported on:
// response.addStatistic(reportIndex, true, elementIndex,
// "name of statistic", "statistic value");
// Remote information (typically RTCP-derived) is added in the same way.
// When finished adding information:
// request.requestSucceeded(response);
class WebRTCStatsRequest {
public:
WebRTCStatsRequest() { }
WebRTCStatsRequest(const WebRTCStatsRequest& other) { assign(other); }
~WebRTCStatsRequest() { reset(); }
WebRTCStatsRequest& operator=(const WebRTCStatsRequest& other)
{
assign(other);
return *this;
}
BLINK_EXPORT void assign(const WebRTCStatsRequest&);
BLINK_EXPORT void reset();
// This function returns true if a selector argument was given to getStats.
BLINK_EXPORT bool hasSelector() const;
// The stream() and component() accessors give the two pieces of information
// required to look up a MediaStreamTrack implementation.
// It is only useful to call them when hasSelector() returns true.
BLINK_EXPORT const WebMediaStream stream() const;
BLINK_EXPORT const WebMediaStreamTrack component() const;
BLINK_EXPORT void requestSucceeded(const WebRTCStatsResponse&) const;
BLINK_EXPORT WebRTCStatsResponse createResponse() const;
#if BLINK_IMPLEMENTATION
WebRTCStatsRequest(const WTF::PassRefPtr<WebCore::RTCStatsRequest>&);
#endif
private:
WebPrivatePtr<WebCore::RTCStatsRequest> m_private;
};
} // namespace blink
#endif // WebRTCStatsRequest_h
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