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content / renderer / media / renderer_web_media_player_delegate.cc [blame]
// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/renderer/media/renderer_web_media_player_delegate.h"
#include <stdint.h>
#include "base/auto_reset.h"
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/metrics/user_metrics_action.h"
#include "base/system/sys_info.h"
#include "base/task/single_thread_task_runner.h"
#include "content/public/common/content_client.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/public/renderer/render_frame.h"
#include "content/public/renderer/render_thread.h"
#include "media/base/media_content_type.h"
#include "third_party/blink/public/mojom/frame/user_activation_notification_type.mojom.h"
#include "third_party/blink/public/platform/web_fullscreen_video_status.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_view.h"
#include "third_party/blink/public/web/web_view_observer.h"
#include "ui/gfx/geometry/size.h"
namespace {
void RecordAction(const base::UserMetricsAction& action) {
content::RenderThread::Get()->RecordAction(action);
}
} // namespace
namespace media {
RendererWebMediaPlayerDelegate::RendererWebMediaPlayerDelegate(
content::RenderFrame* render_frame)
: RenderFrameObserver(render_frame),
blink::WebViewObserver(render_frame->GetWebView()),
allow_idle_cleanup_(
content::GetContentClient()->renderer()->IsIdleMediaSuspendEnabled()),
tick_clock_(base::DefaultTickClock::GetInstance()) {
idle_cleanup_interval_ = base::Seconds(5);
idle_timeout_ = base::Seconds(15);
// This imposes drastic limits on the number of media players and is only
// appropriate for true low end devices.
is_low_end_ = base::SysInfo::IsLowEndDevice();
idle_cleanup_timer_.SetTaskRunner(
render_frame->GetTaskRunner(blink::TaskType::kInternalMedia));
}
RendererWebMediaPlayerDelegate::~RendererWebMediaPlayerDelegate() {}
bool RendererWebMediaPlayerDelegate::IsPageHidden() {
// There is always a render frame except perhaps during teardown (though
// |this| should be deleted before that would be observable).
if (!render_frame())
return true;
// If the view is gone it means we are tearing down.
if (!render_frame()->GetWebView())
return true;
switch (render_frame()->GetWebView()->GetVisibilityState()) {
case blink::mojom::PageVisibilityState::kVisible:
case blink::mojom::PageVisibilityState::kHiddenButPainting:
return false;
case blink::mojom::PageVisibilityState::kHidden:
return true;
}
NOTREACHED();
}
bool RendererWebMediaPlayerDelegate::IsFrameHidden() {
// There is always a render frame except perhaps during teardown (though
// `this` should be deleted before that would be observable).
CHECK(render_frame());
// If the view is gone it means we are tearing down.
if (!render_frame()->GetWebView()) {
return true;
}
return is_frame_hidden_;
}
int RendererWebMediaPlayerDelegate::AddObserver(Observer* observer) {
return id_map_.Add(observer);
}
void RendererWebMediaPlayerDelegate::RemoveObserver(int player_id) {
DCHECK(id_map_.Lookup(player_id));
id_map_.Remove(player_id);
idle_player_map_.erase(player_id);
stale_players_.erase(player_id);
players_with_video_.erase(player_id);
playing_videos_.erase(player_id);
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::DidMediaMetadataChange(
int player_id,
bool has_audio,
bool has_video,
MediaContentType media_content_type) {
DVLOG(2) << __func__ << "(" << player_id << ", " << has_video << ", "
<< has_audio << ", " << static_cast<int>(media_content_type) << ")";
if (has_video) {
players_with_video_.insert(player_id);
} else {
players_with_video_.erase(player_id);
playing_videos_.erase(player_id);
}
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::DidPlay(int player_id) {
DVLOG(2) << __func__ << "(" << player_id << ")";
DCHECK(id_map_.Lookup(player_id));
has_played_media_ = true;
if (players_with_video_.count(player_id) == 1) {
playing_videos_.insert(player_id);
has_played_video_ = true;
}
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::DidPause(int player_id,
bool reached_end_of_stream) {
DVLOG(2) << __func__ << "(" << player_id << ", " << reached_end_of_stream
<< ")";
DCHECK(id_map_.Lookup(player_id));
playing_videos_.erase(player_id);
// Required to keep background playback statistics up to date.
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::PlayerGone(int player_id) {
DVLOG(2) << __func__ << "(" << player_id << ")";
DCHECK(id_map_.Lookup(player_id));
players_with_video_.erase(player_id);
playing_videos_.erase(player_id);
// Required to keep background playback statistics up to date.
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::SetIdle(int player_id, bool is_idle) {
DVLOG(2) << __func__ << "(" << player_id << ", " << is_idle << ")";
if (is_idle == IsIdle(player_id))
return;
if (is_idle) {
idle_player_map_[player_id] = tick_clock_->NowTicks();
} else {
idle_player_map_.erase(player_id);
stale_players_.erase(player_id);
}
ScheduleUpdateTask();
}
bool RendererWebMediaPlayerDelegate::IsIdle(int player_id) {
return idle_player_map_.count(player_id) || stale_players_.count(player_id);
}
void RendererWebMediaPlayerDelegate::ClearStaleFlag(int player_id) {
DVLOG(2) << __func__ << "(" << player_id << ")";
if (!stale_players_.erase(player_id))
return;
// Set the idle time such that the player will be considered stale the next
// time idle cleanup runs.
idle_player_map_[player_id] = tick_clock_->NowTicks() - idle_timeout_;
// No need to call Update immediately, just make sure the idle
// timer is running. Calling ScheduleUpdateTask() here will cause
// immediate cleanup, and if that fails, this function gets called
// again which uses 100% cpu until resolved.
if (!idle_cleanup_timer_.IsRunning() && !pending_update_task_) {
idle_cleanup_timer_.Start(
FROM_HERE, idle_cleanup_interval_,
base::BindOnce(&RendererWebMediaPlayerDelegate::UpdateTask,
base::Unretained(this)));
}
}
bool RendererWebMediaPlayerDelegate::IsStale(int player_id) {
return stale_players_.count(player_id);
}
void RendererWebMediaPlayerDelegate::OnPageVisibilityChanged(
blink::mojom::PageVisibilityState visibility_state) {
// Treat 'hidden but painting' as 'visible', since whatever is consuming the
// painted output (e.g., Picture in Picture), probably wants the video.
// Otherwise, the player might optimize the video away.
bool is_shown;
switch (visibility_state) {
case blink::mojom::PageVisibilityState::kVisible:
case blink::mojom::PageVisibilityState::kHiddenButPainting:
is_shown = true;
break;
case blink::mojom::PageVisibilityState::kHidden:
is_shown = false;
break;
}
if (is_shown_.has_value() && *is_shown_ == is_shown)
return;
is_shown_ = is_shown;
if (is_shown) {
RecordAction(base::UserMetricsAction("Media.Shown"));
for (base::IDMap<Observer*>::iterator it(&id_map_); !it.IsAtEnd();
it.Advance()) {
it.GetCurrentValue()->OnPageShown();
}
} else {
RecordAction(base::UserMetricsAction("Media.Hidden"));
for (base::IDMap<Observer*>::iterator it(&id_map_); !it.IsAtEnd();
it.Advance()) {
it.GetCurrentValue()->OnPageHidden();
}
}
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::SetIdleCleanupParamsForTesting(
base::TimeDelta idle_timeout,
base::TimeDelta idle_cleanup_interval,
const base::TickClock* tick_clock,
bool is_low_end) {
idle_cleanup_interval_ = idle_cleanup_interval;
idle_timeout_ = idle_timeout;
tick_clock_ = tick_clock;
is_low_end_ = is_low_end;
}
bool RendererWebMediaPlayerDelegate::IsIdleCleanupTimerRunningForTesting()
const {
return idle_cleanup_timer_.IsRunning();
}
void RendererWebMediaPlayerDelegate::SetFrameHiddenForTesting(
bool is_frame_hidden) {
if (is_frame_hidden == is_frame_hidden_) {
return;
}
is_frame_hidden_ = is_frame_hidden;
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::ScheduleUpdateTask() {
if (!pending_update_task_) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(&RendererWebMediaPlayerDelegate::UpdateTask,
weak_ptr_factory_.GetWeakPtr()));
pending_update_task_ = true;
}
}
void RendererWebMediaPlayerDelegate::UpdateTask() {
DVLOG(3) << __func__;
pending_update_task_ = false;
// Check whether a player was played since the last UpdateTask(). We basically
// treat this as a parameter to UpdateTask(), except that it can be changed
// between posting the task and UpdateTask() executing.
bool has_played_video_since_last_update_task = has_played_video_;
has_played_video_ = false;
if (!allow_idle_cleanup_)
return;
// Clean up idle players.
bool aggressive_cleanup = false;
// When we reach the maximum number of idle players, clean them up
// aggressively. Values chosen after testing on a Galaxy Nexus device for
// http://crbug.com/612909.
if (idle_player_map_.size() > (is_low_end_ ? 2u : 8u))
aggressive_cleanup = true;
// When a player plays on a buggy old device, clean up idle players
// aggressively.
if (has_played_video_since_last_update_task && is_low_end_)
aggressive_cleanup = true;
CleanUpIdlePlayers(aggressive_cleanup ? base::TimeDelta() : idle_timeout_);
// If there are still idle players, schedule an attempt to clean them up.
// This construct ensures that the next callback is always
// |idle_cleanup_interval_| from now.
idle_cleanup_timer_.Stop();
if (!idle_player_map_.empty()) {
idle_cleanup_timer_.Start(
FROM_HERE, idle_cleanup_interval_,
base::BindOnce(&RendererWebMediaPlayerDelegate::UpdateTask,
base::Unretained(this)));
}
}
void RendererWebMediaPlayerDelegate::CleanUpIdlePlayers(
base::TimeDelta timeout) {
const base::TimeTicks now = tick_clock_->NowTicks();
// Create a list of stale players before making any possibly reentrant calls
// to OnIdleTimeout().
std::vector<int> stale_players;
for (const auto& it : idle_player_map_) {
if (now - it.second >= timeout)
stale_players.push_back(it.first);
}
// Notify stale players.
for (int player_id : stale_players) {
Observer* player = id_map_.Lookup(player_id);
if (player && idle_player_map_.erase(player_id)) {
stale_players_.insert(player_id);
player->OnIdleTimeout();
}
}
}
void RendererWebMediaPlayerDelegate::OnFrameVisibilityChanged(
blink::mojom::FrameVisibility render_status) {
bool is_frame_hidden =
(render_status == blink::mojom::FrameVisibility::kNotRendered);
if (is_frame_hidden == is_frame_hidden_) {
return;
}
is_frame_hidden_ = is_frame_hidden;
if (is_frame_hidden_) {
for (base::IDMap<Observer*>::iterator it(&id_map_); !it.IsAtEnd();
it.Advance()) {
it.GetCurrentValue()->OnFrameHidden();
}
} else {
for (base::IDMap<Observer*>::iterator it(&id_map_); !it.IsAtEnd();
it.Advance()) {
it.GetCurrentValue()->OnFrameShown();
}
}
ScheduleUpdateTask();
}
void RendererWebMediaPlayerDelegate::OnDestruct() {
// All WebMediaPlayer instances should have been destructed by this point.
CHECK(id_map_.IsEmpty());
CHECK(idle_player_map_.empty());
CHECK(stale_players_.empty());
CHECK(players_with_video_.empty());
CHECK(playing_videos_.empty());
delete this;
}
} // namespace media