Plumb media data from renderers up to MediaInternals in the browser process.

media/base/media_log.cc

Index: media/base/media_log.cc
diff --git a/media/base/media_log.cc b/media/base/media_log.cc
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+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/logging.h"
+#include "media/base/media_log.h"
+
+namespace media {
+
+// A count of all MediaLogs created on this render process.
+// Used to generate unique ids.
+static int32 media_log_count = 0;

[acolwell GONE FROM CHROMIUM, 2011/08/03 16:31:37]

Do we need to worry about thread safety here? If so then perhaps you should use
this instead.
static base::AtomicSequenceNumber media_log_count(base::LINKER_INITIALIZED);

[Scott Franklin, 2011/08/03 20:55:04]

In practice, no, MediaLogs are only created on the render thread; there's a
DCHECK to that effect in RenderMediaLog.

That said, I suppose it could become an issue in the future (I'll need instances
for tests, etc.), and it doesn't really hurt anything to add a bit of
synchronization.

Done.

+
+const char* MediaLog::EventTypeToString(MediaLogEvent::Type type) {
+  switch (type) {
+    case MediaLogEvent::CREATE:
+      return "CREATE";
+    case MediaLogEvent::DESTROY:
+      return "DESTROY";
+    case MediaLogEvent::LOAD:
+      return "LOAD";
+    case MediaLogEvent::PLAY:
+      return "PLAY";
+    case MediaLogEvent::PAUSE:
+      return "PAUSE";
+  }
+  NOTREACHED();
+  return NULL;
+}
+
+MediaLog::MediaLog() {
+  id_ = media_log_count;
+  media_log_count++;
+}
+
+MediaLog::~MediaLog() {}
+
+void MediaLog::Load(const std::string& url) {
+  MediaLogEvent* event = CreateEvent(MediaLogEvent::LOAD);
+  event->params.SetString("url", url);
+  AddEvent(event);
+}
+
+void MediaLog::AddEventOfType(MediaLogEvent::Type type) {
+  MediaLogEvent* event = CreateEvent(type);
+  AddEvent(event);
+}
+
+MediaLogEvent* MediaLog::CreateEvent(MediaLogEvent::Type type) {
+  MediaLogEvent* event = new MediaLogEvent;
+  event->id = id_;
+  event->type = type;
+  event->time = base::Time::Now();
+  return event;
+}
+
+void MediaLog::AddEvent(MediaLogEvent* event) {}
+
+}  //namespace media