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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:
*
* 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 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 THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_REQUEST_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_REQUEST_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
class MediaStreamComponent;
class RTCStatsResponseBase;
// TODO(crbug.com/787254): Merge RTCStatsRequest and RTCStatsRequestImpl
// when the former is not referenced in renderer/platform anymore.
//
// The RTCStatsRequest class represents a JavaScript call on
// RTCPeerConnection.getStats(). The user of this API will use
// the calls on this class and RTCStatsResponseBase to fill in the
// data that will be returned via a callback to the user in an
// RTCStatsResponse structure.
//
// The typical usage pattern is:
// RTCStatsRequest* request = <from somewhere>
// RTCStatsResponseBase* response = request->CreateResponse();
//
// For each item on which statistics are going to be reported:
// RTCLegacyStats stats(...);
// (configuration of stats object depends on item type)
// response.AddStats(stats);
// When finished adding information:
// request->RequestSucceeded(response);
class RTCStatsRequest : public GarbageCollected<RTCStatsRequest> {
public:
virtual ~RTCStatsRequest() = default;
virtual RTCStatsResponseBase* CreateResponse() = 0;
// This function returns true if a selector argument was given to getStats.
virtual bool HasSelector() = 0;
// The Component() accessor give the information
// required to look up a MediaStreamTrack implementation.
// It is only useful to call it when HasSelector() returns true.
virtual MediaStreamComponent* Component() = 0;
virtual void RequestSucceeded(RTCStatsResponseBase*) = 0;
virtual void Trace(Visitor* visitor) const {}
protected:
RTCStatsRequest() = default;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_PEERCONNECTION_RTC_STATS_REQUEST_H_
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