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// 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 <sstream>
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/time/default_tick_clock.h"
#include "content/common/view_messages.h"
#include "content/public/common/content_client.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/public/renderer/render_thread.h"
#ifndef MEDIA_EVENT_LOG_UTILITY
#define MEDIA_EVENT_LOG_UTILITY DVLOG(1)
#endif
namespace {
// Print an event to the chromium log.
void Log(media::MediaLogEvent* event) {
if (event->type == media::MediaLogEvent::PIPELINE_ERROR ||
event->type == media::MediaLogEvent::MEDIA_ERROR_LOG_ENTRY) {
LOG(ERROR) << "MediaEvent: "
<< media::MediaLog::MediaEventToLogString(*event);
} else if (event->type != media::MediaLogEvent::PROPERTY_CHANGE) {
MEDIA_EVENT_LOG_UTILITY << "MediaEvent: "
<< media::MediaLog::MediaEventToLogString(*event);
}
}
} // namespace
namespace content {
RenderMediaLog::RenderMediaLog(
const GURL& security_origin,
scoped_refptr<base::SingleThreadTaskRunner> task_runner)
: security_origin_(security_origin),
task_runner_(std::move(task_runner)),
tick_clock_(base::DefaultTickClock::GetInstance()),
last_ipc_send_time_(tick_clock_->NowTicks()),
ipc_send_pending_(false),
weak_factory_(this) {
DCHECK(RenderThread::Get())
<< "RenderMediaLog must be constructed on the render thread";
// Pre-bind the WeakPtr on the right thread since we'll receive calls from
// other threads and don't want races.
weak_this_ = weak_factory_.GetWeakPtr();
}
RenderMediaLog::~RenderMediaLog() {
DCHECK(task_runner_->BelongsToCurrentThread());
// There's no further chance to handle this, so send them now. This should not
// be racy since nothing should have a pointer to the media log on another
// thread by this point.
if (ipc_send_pending_)
SendQueuedMediaEvents();
}
void RenderMediaLog::AddEvent(std::unique_ptr<media::MediaLogEvent> event) {
Log(event.get());
// For enforcing delay until it's been a second since the last ipc message was
// sent.
base::TimeDelta delay_for_next_ipc_send;
{
base::AutoLock auto_lock(lock_);
switch (event->type) {
case media::MediaLogEvent::DURATION_SET:
// Similar to the extents changed message, this may fire many times for
// badly muxed media. Suppress within our rate limits here.
last_duration_changed_event_.swap(event);
break;
// Hold onto the most recent PIPELINE_ERROR and the first, if any,
// MEDIA_LOG_ERROR_ENTRY for use in GetErrorMessage().
case media::MediaLogEvent::PIPELINE_ERROR:
queued_media_events_.push_back(*event);
last_pipeline_error_.swap(event);
break;
case media::MediaLogEvent::MEDIA_ERROR_LOG_ENTRY:
queued_media_events_.push_back(*event);
if (!cached_media_error_for_message_)
cached_media_error_for_message_ = std::move(event);
break;
// Just enqueue all other event types for throttled transmission.
default:
queued_media_events_.push_back(*event);
}
if (ipc_send_pending_)
return;
ipc_send_pending_ = true;
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::BindOnce(&RenderMediaLog::SendQueuedMediaEvents, weak_this_),
delay_for_next_ipc_send);
return;
}
// It's been more than a second so send ASAP.
if (task_runner_->BelongsToCurrentThread()) {
SendQueuedMediaEvents();
return;
}
task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&RenderMediaLog::SendQueuedMediaEvents, weak_this_));
}
std::string RenderMediaLog::GetErrorMessage() {
base::AutoLock auto_lock(lock_);
// Keep message structure in sync with
// HTMLMediaElement::BuildElementErrorMessage().
std::stringstream result;
if (last_pipeline_error_)
result << MediaEventToMessageString(*last_pipeline_error_);
if (cached_media_error_for_message_) {
DCHECK(last_pipeline_error_)
<< "Message with detail should be associated with a pipeline error";
// This ':' lets web apps extract the UA-specific-error-code from the
// MediaError.message prefix.
result << ": "
<< MediaEventToMessageString(*cached_media_error_for_message_);
}
return result.str();
}
void RenderMediaLog::RecordRapporWithSecurityOrigin(const std::string& metric) {
if (!task_runner_->BelongsToCurrentThread()) {
task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&RenderMediaLog::RecordRapporWithSecurityOrigin,
weak_this_, metric));
return;
}
GetContentClient()->renderer()->RecordRapporURL(metric, security_origin_);
}
void RenderMediaLog::SendQueuedMediaEvents() {
DCHECK(task_runner_->BelongsToCurrentThread());
std::vector<media::MediaLogEvent> events_to_send;
{
base::AutoLock auto_lock(lock_);
DCHECK(ipc_send_pending_);
ipc_send_pending_ = false;
if (last_duration_changed_event_) {
queued_media_events_.push_back(*last_duration_changed_event_);
last_duration_changed_event_.reset();
}
queued_media_events_.swap(events_to_send);
last_ipc_send_time_ = tick_clock_->NowTicks();
}
if (events_to_send.empty())
return;
RenderThread::Get()->Send(new ViewHostMsg_MediaLogEvents(events_to_send));
}
void RenderMediaLog::SetTickClockForTesting(base::TickClock* tick_clock) {
base::AutoLock auto_lock(lock_);
tick_clock_ = 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
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