[MediaStream API] Adding MediaStreamTrack::getSourceInfos

Source/modules/mediastream/MediaStreamTrack.cpp

 /*
  * Copyright (C) 2011 Google Inc. All rights reserved.
  * Copyright (C) 2011 Ericsson AB. 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.
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  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS 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 APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 #include "config.h"
 #include "modules/mediastream/MediaStreamTrack.h"
 
 #include "core/dom/Event.h"
+#include "core/dom/ScriptExecutionContext.h"
 #include "core/platform/mediastream/MediaStreamCenter.h"
 #include "core/platform/mediastream/MediaStreamComponent.h"
+#include "public/platform/WebSourceInfo.h"
+#include "weborigin/SecurityOrigin.h"
 
 namespace WebCore {
 
 PassRefPtr<MediaStreamTrack> MediaStreamTrack::create(ScriptExecutionContext* context, MediaStreamComponent* component)
 {
     RefPtr<MediaStreamTrack> track = adoptRef(new MediaStreamTrack(context, component));
     track->suspendIfNeeded();
     return track.release();
 }
 
@@ skipping 66 matching lines @@
     case MediaStreamSource::ReadyStateMuted:
         return ASCIILiteral("muted");
     case MediaStreamSource::ReadyStateEnded:
         return ASCIILiteral("ended");
     }
 
     ASSERT_NOT_REACHED();
     return String();
 }
 
+SourceInfoVector MediaStreamTrack::getSourceInfos(ScriptExecutionContext* context, ExceptionCode& ec)
+{
+    WebKit::WebVector<WebKit::WebSourceInfo> webSourceInfos;
+    bool ok = MediaStreamCenter::instance().getSourceInfos(context->securityOrigin()->toString(), webSourceInfos);
+    if (!ok) {
+        ec = NOT_SUPPORTED_ERR;
+        return SourceInfoVector();
+    }
+
+    SourceInfoVector sourceInfos;
+    for (size_t i = 0; i < webSourceInfos.size(); ++i)
+        sourceInfos.append(SourceInfo::create(webSourceInfos[i]));
+
+    return sourceInfos;
+}
+
 bool MediaStreamTrack::ended() const
 {
     return m_stopped || (m_component->source()->readyState() == MediaStreamSource::ReadyStateEnded);
 }
 
 void MediaStreamTrack::sourceChangedState()
 {
     if (m_stopped)
         return;
 
@@ skipping 44 matching lines @@
 {
     return &m_eventTargetData;
 }
 
 EventTargetData* MediaStreamTrack::ensureEventTargetData()
 {
     return &m_eventTargetData;
 }
 
 } // namespace WebCore