Revert "Remove MediaStreamTrack.getSources()."

third_party/WebKit/Source/modules/mediastream/SourceInfo.cpp

+/*
+ * Copyright (C) 2013 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``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 GOOGLE INC. 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.
+ */
+
+#include "modules/mediastream/SourceInfo.h"
+
+#include "wtf/text/WTFString.h"
+
+namespace blink {
+
+SourceInfo* SourceInfo::create(const WebSourceInfo& webSourceInfo) {
+  DCHECK(!webSourceInfo.isNull());
+  return new SourceInfo(webSourceInfo);
+}
+
+SourceInfo::SourceInfo(const WebSourceInfo& webSourceInfo)
+    : m_webSourceInfo(webSourceInfo) {}
+
+String SourceInfo::id() const {
+  return m_webSourceInfo.id();
+}
+
+String SourceInfo::kind() const {
+  switch (m_webSourceInfo.kind()) {
+    case WebSourceInfo::SourceKindAudio:
+      return "audio";
+    case WebSourceInfo::SourceKindVideo:
+      return "video";
+    case WebSourceInfo::SourceKindNone:
+      return "none";
+  }
+
+  NOTREACHED();
+  return String();
+}
+
+String SourceInfo::label() const {
+  return m_webSourceInfo.label();
+}
+
+String SourceInfo::facing() const {
+  switch (m_webSourceInfo.facing()) {
+    case WebSourceInfo::VideoFacingModeNone:
+      return String();
+    case WebSourceInfo::VideoFacingModeUser:
+      return "user";
+    case WebSourceInfo::VideoFacingModeEnvironment:
+      return "environment";
+  }
+
+  NOTREACHED();
+  return String();
+}
+
+}  // namespace blink