1 files changed, 168 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/platform/mediastream/media_stream_descriptor.cc b/chromium/third_party/blink/renderer/platform/mediastream/media_stream_descriptor.cc
new file mode 100644
index 00000000000..b327c63e9ed
--- /dev/null
+++ b/chromium/third_party/blink/renderer/platform/mediastream/media_stream_descriptor.cc
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2011 Ericsson AB. All rights reserved.
+ * 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:
+ *
+ *     * 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.
+ */
+
+#include "third_party/blink/renderer/platform/mediastream/media_stream_descriptor.h"
+
+#include "third_party/blink/public/platform/web_media_stream.h"
+#include "third_party/blink/renderer/platform/uuid.h"
+
+namespace blink {
+
+namespace {
+
+static int g_unique_media_stream_descriptor_id = 0;
+
+}  // namespace
+
+// static
+int MediaStreamDescriptor::GenerateUniqueId() {
+  return ++g_unique_media_stream_descriptor_id;
+}
+
+MediaStreamDescriptor* MediaStreamDescriptor::Create(
+    const MediaStreamSourceVector& audio_sources,
+    const MediaStreamSourceVector& video_sources) {
+  return new MediaStreamDescriptor(CreateCanonicalUUIDString(), audio_sources,
+                                   video_sources);
+}
+
+MediaStreamDescriptor* MediaStreamDescriptor::Create(
+    const MediaStreamComponentVector& audio_components,
+    const MediaStreamComponentVector& video_components) {
+  return new MediaStreamDescriptor(CreateCanonicalUUIDString(),
+                                   audio_components, video_components);
+}
+
+MediaStreamDescriptor* MediaStreamDescriptor::Create(
+    const String& id,
+    const MediaStreamComponentVector& audio_components,
+    const MediaStreamComponentVector& video_components) {
+  return new MediaStreamDescriptor(id, audio_components, video_components);
+}
+
+void MediaStreamDescriptor::AddComponent(MediaStreamComponent* component) {
+  switch (component->Source()->GetType()) {
+    case MediaStreamSource::kTypeAudio:
+      if (audio_components_.Find(component) == kNotFound)
+        audio_components_.push_back(component);
+      break;
+    case MediaStreamSource::kTypeVideo:
+      if (video_components_.Find(component) == kNotFound)
+        video_components_.push_back(component);
+      break;
+  }
+
+  for (auto& observer : observers_) {
+    observer->TrackAdded(component);
+  }
+}
+
+void MediaStreamDescriptor::RemoveComponent(MediaStreamComponent* component) {
+  size_t pos = kNotFound;
+  switch (component->Source()->GetType()) {
+    case MediaStreamSource::kTypeAudio:
+      pos = audio_components_.Find(component);
+      if (pos != kNotFound)
+        audio_components_.EraseAt(pos);
+      break;
+    case MediaStreamSource::kTypeVideo:
+      pos = video_components_.Find(component);
+      if (pos != kNotFound)
+        video_components_.EraseAt(pos);
+      break;
+  }
+
+  for (auto& observer : observers_) {
+    observer->TrackRemoved(component);
+  }
+}
+
+void MediaStreamDescriptor::AddRemoteTrack(MediaStreamComponent* component) {
+  if (client_)
+    client_->AddTrackByComponent(component);
+  else
+    AddComponent(component);
+}
+
+void MediaStreamDescriptor::RemoveRemoteTrack(MediaStreamComponent* component) {
+  if (client_)
+    client_->RemoveTrackByComponent(component);
+  else
+    RemoveComponent(component);
+}
+
+void MediaStreamDescriptor::AddObserver(WebMediaStreamObserver* observer) {
+  DCHECK_EQ(observers_.Find(observer), kNotFound);
+  observers_.push_back(observer);
+}
+
+void MediaStreamDescriptor::RemoveObserver(WebMediaStreamObserver* observer) {
+  size_t index = observers_.Find(observer);
+  DCHECK(index != kNotFound);
+  observers_.EraseAt(index);
+}
+
+MediaStreamDescriptor::MediaStreamDescriptor(
+    const String& id,
+    const MediaStreamSourceVector& audio_sources,
+    const MediaStreamSourceVector& video_sources)
+    : client_(nullptr), id_(id), unique_id_(GenerateUniqueId()), active_(true) {
+  DCHECK(id_.length());
+  for (size_t i = 0; i < audio_sources.size(); i++)
+    audio_components_.push_back(MediaStreamComponent::Create(audio_sources[i]));
+
+  for (size_t i = 0; i < video_sources.size(); i++)
+    video_components_.push_back(MediaStreamComponent::Create(video_sources[i]));
+}
+
+MediaStreamDescriptor::MediaStreamDescriptor(
+    const String& id,
+    const MediaStreamComponentVector& audio_components,
+    const MediaStreamComponentVector& video_components)
+    : client_(nullptr), id_(id), unique_id_(GenerateUniqueId()), active_(true) {
+  DCHECK(id_.length());
+  for (MediaStreamComponentVector::const_iterator iter =
+           audio_components.begin();
+       iter != audio_components.end(); ++iter)
+    audio_components_.push_back((*iter));
+  for (MediaStreamComponentVector::const_iterator iter =
+           video_components.begin();
+       iter != video_components.end(); ++iter)
+    video_components_.push_back((*iter));
+}
+
+void MediaStreamDescriptor::Trace(blink::Visitor* visitor) {
+  visitor->Trace(audio_components_);
+  visitor->Trace(video_components_);
+  visitor->Trace(client_);
+}
+
+}  // namespace blink