| // 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 "content/renderer/media/render_media_log.h" |
| |
| #include "base/bind.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop_proxy.h" |
| #include "content/common/view_messages.h" |
| #include "content/public/renderer/render_thread.h" |
| |
| namespace { |
| |
| // Print an event to the chromium log. |
| void Log(media::MediaLogEvent* event) { |
| if (event->type == media::MediaLogEvent::PIPELINE_ERROR) { |
| LOG(ERROR) << "MediaEvent: " |
| << media::MediaLog::MediaEventToLogString(*event); |
| } else if (event->type != media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED && |
| event->type != media::MediaLogEvent::PROPERTY_CHANGE && |
| event->type != media::MediaLogEvent::NETWORK_ACTIVITY_SET) { |
| DVLOG(1) << "MediaEvent: " |
| << media::MediaLog::MediaEventToLogString(*event); |
| } |
| } |
| |
| } // namespace |
| |
| namespace content { |
| |
| RenderMediaLog::RenderMediaLog() |
| : task_runner_(base::MessageLoopProxy::current()), |
| tick_clock_(new base::DefaultTickClock()), |
| last_ipc_send_time_(tick_clock_->NowTicks()) { |
| DCHECK(RenderThread::Get()) |
| << "RenderMediaLog must be constructed on the render thread"; |
| } |
| |
| void RenderMediaLog::AddEvent(scoped_ptr<media::MediaLogEvent> event) { |
| if (!task_runner_->BelongsToCurrentThread()) { |
| task_runner_->PostTask(FROM_HERE, base::Bind(&RenderMediaLog::AddEvent, |
| this, base::Passed(&event))); |
| return; |
| } |
| |
| Log(event.get()); |
| |
| // If there is an event waiting to be sent, there must be a send task pending. |
| const bool delayed_ipc_send_pending = |
| !queued_media_events_.empty() || last_buffered_extents_changed_event_; |
| |
| // Keep track of the latest buffered extents properties to avoid sending |
| // thousands of events over IPC. See http://crbug.com/352585 for details. |
| if (event->type == media::MediaLogEvent::BUFFERED_EXTENTS_CHANGED) |
| last_buffered_extents_changed_event_.swap(event); |
| else |
| queued_media_events_.push_back(*event); |
| |
| if (delayed_ipc_send_pending) |
| return; |
| |
| // Delay until it's been a second since the last ipc message was sent. |
| base::TimeDelta delay_for_next_ipc_send = |
| base::TimeDelta::FromSeconds(1) - |
| (tick_clock_->NowTicks() - last_ipc_send_time_); |
| if (delay_for_next_ipc_send > base::TimeDelta()) { |
| task_runner_->PostDelayedTask( |
| FROM_HERE, base::Bind(&RenderMediaLog::SendQueuedMediaEvents, this), |
| delay_for_next_ipc_send); |
| return; |
| } |
| |
| // It's been more than a second so send now. |
| SendQueuedMediaEvents(); |
| } |
| |
| void RenderMediaLog::SendQueuedMediaEvents() { |
| DCHECK(task_runner_->BelongsToCurrentThread()); |
| |
| if (last_buffered_extents_changed_event_) { |
| queued_media_events_.push_back(*last_buffered_extents_changed_event_); |
| last_buffered_extents_changed_event_.reset(); |
| } |
| |
| RenderThread::Get()->Send( |
| new ViewHostMsg_MediaLogEvents(queued_media_events_)); |
| queued_media_events_.clear(); |
| last_ipc_send_time_ = tick_clock_->NowTicks(); |
| } |
| |
| RenderMediaLog::~RenderMediaLog() { |
| } |
| |
| void RenderMediaLog::SetTickClockForTesting( |
| scoped_ptr<base::TickClock> tick_clock) { |
| tick_clock_.swap(tick_clock); |
| last_ipc_send_time_ = tick_clock_->NowTicks(); |
| } |
| |
| void RenderMediaLog::SetTaskRunnerForTesting( |
| const scoped_refptr<base::SingleThreadTaskRunner>& task_runner) { |
| task_runner_ = task_runner; |
| } |
| |
| } // namespace content |