Log MediaSource parsing errors to the MediaLog so they can appear in chrome:media-internals.

media/base/media_log.cc

 // Copyright (c) 2012 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 "media/base/media_log.h"
 
 #include <string>
 
 #include "base/atomic_sequence_num.h"
 #include "base/logging.h"
@@ skipping 36 matching lines @@
     case MediaLogEvent::NETWORK_ACTIVITY_SET:
       return "NETWORK_ACTIVITY_SET";
     case MediaLogEvent::AUDIO_ENDED:
       return "AUDIO_ENDED";
     case MediaLogEvent::VIDEO_ENDED:
       return "VIDEO_ENDED";
     case MediaLogEvent::AUDIO_RENDERER_DISABLED:
       return "AUDIO_RENDERER_DISABLED";
     case MediaLogEvent::BUFFERED_EXTENTS_CHANGED:
       return "BUFFERED_EXTENTS_CHANGED";
+    case MediaLogEvent::MEDIA_SOURCE_ERROR:
+      return "MEDIA_SOURCE_ERROR";
   }
   NOTREACHED();
   return NULL;
 }
 
 const char* MediaLog::PipelineStatusToString(PipelineStatus status) {
   switch (status) {
     case PIPELINE_OK:
       return "pipeline: ok";
     case PIPELINE_ERROR_URL_NOT_FOUND:
@@ skipping 24 matching lines @@
       return "demuxer: no supported streams";
     case DECODER_ERROR_NOT_SUPPORTED:
       return "decoder: not supported";
     case PIPELINE_STATUS_MAX:
       NOTREACHED();
   }
   NOTREACHED();
   return NULL;
 }
 
+ErrorLogHelper::ErrorLogHelper(const ErrorLogCB& error_cb)
+    : error_cb_(error_cb) {
+}
+
+ErrorLogHelper::~ErrorLogHelper() {
+  if (error_cb_.is_null())
+    return;
+  error_cb_.Run(stream_.str());
+}
+
 MediaLog::MediaLog() : id_(g_media_log_count.GetNext()) {}
 
 MediaLog::~MediaLog() {}
 
 void MediaLog::AddEvent(scoped_ptr<MediaLogEvent> event) {}
 
 scoped_ptr<MediaLogEvent> MediaLog::CreateEvent(MediaLogEvent::Type type) {
   scoped_ptr<MediaLogEvent> event(new MediaLogEvent);
   event->id = id_;
   event->type = type;
@@ skipping 60 matching lines @@
 scoped_ptr<MediaLogEvent> MediaLog::CreateBufferedExtentsChangedEvent(
     size_t start, size_t current, size_t end) {
   scoped_ptr<MediaLogEvent> event(
       CreateEvent(MediaLogEvent::BUFFERED_EXTENTS_CHANGED));
   event->params.SetInteger("buffer_start", start);
   event->params.SetInteger("buffer_current", current);
   event->params.SetInteger("buffer_end", end);
   return event.Pass();
 }
 
+scoped_ptr<MediaLogEvent> MediaLog::CreateMediaSourceErrorEvent(
+    const std::string& error) {
+  scoped_ptr<MediaLogEvent> event(
+      CreateEvent(MediaLogEvent::MEDIA_SOURCE_ERROR));
+  event->params.SetString("error", error);
+  return event.Pass();
+}
+
 }  //namespace media