src/content/renderer/media/render_media_log.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/renderer/media/render_media_log.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "base/message_loop/message_loop_proxy.h"
  10 #include "content/common/view_messages.h"
  11 #include "content/renderer/render_thread_impl.h"
  12
  13 using base::Time;
  14 using base::TimeDelta;
  15
  16 namespace content {
  17
  18 RenderMediaLog::RenderMediaLog()
  19     : render_loop_(base::MessageLoopProxy::current()),
  20       last_ipc_send_time_(Time::Now()) {
  21   DCHECK(RenderThreadImpl::current()) <<
  22       "RenderMediaLog must be constructed on the render thread";
  23 }
  24
  25 void RenderMediaLog::AddEvent(scoped_ptr<media::MediaLogEvent> event) {
  26   if (!RenderThreadImpl::current()) {
  27     render_loop_->PostTask(FROM_HERE, base::Bind(
  28         &RenderMediaLog::AddEvent, this, base::Passed(&event)));
  29     return;
  30   }
  31   queued_media_events_.push_back(*event);
  32   // Limit the send rate of high frequency events.
  33   Time curr_time = Time::Now();
  34   if ((curr_time - last_ipc_send_time_) < TimeDelta::FromSeconds(1))
  35     return;
  36   last_ipc_send_time_ = curr_time;
  37   DVLOG(1) << "media log events array size " << queued_media_events_.size();
  38   RenderThreadImpl::current()->Send(
  39       new ViewHostMsg_MediaLogEvents(queued_media_events_));
  40   queued_media_events_.clear();
  41 }
  42
  43 RenderMediaLog::~RenderMediaLog() {}
  44
  45 }  // namespace content