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webmediaplayer_impl.cc
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webmediaplayer_impl.cc
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// Copyright 2013 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/blink/webmediaplayer_impl.h"
#include <algorithm>
#include <cmath>
#include <limits>
#include <memory>
#include <string>
#include <utility>
#include "base/bind.h"
#include "base/callback.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/debug/alias.h"
#include "base/debug/crash_logging.h"
#include "base/location.h"
#include "base/memory/weak_ptr.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "base/single_thread_task_runner.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/stringprintf.h"
#include "base/task/post_task.h"
#include "base/task/thread_pool.h"
#include "base/task_runner_util.h"
#include "base/trace_event/memory_dump_manager.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "cc/layers/video_layer.h"
#include "components/viz/common/gpu/raster_context_provider.h"
#include "media/audio/null_audio_sink.h"
#include "media/base/bind_to_current_loop.h"
#include "media/base/cdm_context.h"
#include "media/base/encryption_scheme.h"
#include "media/base/limits.h"
#include "media/base/media_content_type.h"
#include "media/base/media_log.h"
#include "media/base/media_switches.h"
#include "media/base/media_url_demuxer.h"
#include "media/base/memory_dump_provider_proxy.h"
#include "media/base/text_renderer.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_frame.h"
#include "media/blink/power_status_helper.h"
#include "media/blink/texttrack_impl.h"
#include "media/blink/url_index.h"
#include "media/blink/video_decode_stats_reporter.h"
#include "media/blink/webcontentdecryptionmodule_impl.h"
#include "media/blink/webinbandtexttrack_impl.h"
#include "media/blink/webmediasource_impl.h"
#include "media/filters/chunk_demuxer.h"
#include "media/filters/ffmpeg_demuxer.h"
#include "media/filters/memory_data_source.h"
#include "media/filters/pipeline_controller.h"
#include "media/learning/common/learning_task_controller.h"
#include "media/learning/common/media_learning_tasks.h"
#include "media/learning/mojo/public/cpp/mojo_learning_task_controller.h"
#include "media/media_buildflags.h"
#include "media/remoting/remoting_constants.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "net/base/data_url.h"
#include "third_party/blink/public/common/media/display_type.h"
#include "third_party/blink/public/common/media/watch_time_reporter.h"
#include "third_party/blink/public/platform/web_encrypted_media_types.h"
#include "third_party/blink/public/platform/web_fullscreen_video_status.h"
#include "third_party/blink/public/platform/web_media_player_client.h"
#include "third_party/blink/public/platform/web_media_player_encrypted_media_client.h"
#include "third_party/blink/public/platform/web_media_player_source.h"
#include "third_party/blink/public/platform/web_media_source.h"
#include "third_party/blink/public/platform/web_runtime_features.h"
#include "third_party/blink/public/platform/web_security_origin.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_surface_layer_bridge.h"
#include "third_party/blink/public/platform/web_texttrack_metadata.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/platform/webaudiosourceprovider_impl.h"
#include "third_party/blink/public/strings/grit/blink_strings.h"
#include "third_party/blink/public/web/modules/media/webmediaplayer_util.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_frame.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_view.h"
#include "ui/gfx/geometry/size.h"
#if defined(OS_ANDROID)
#include "media/base/android/media_codec_util.h"
#endif
using blink::WebMediaPlayer;
using blink::WebString;
using gpu::gles2::GLES2Interface;
#define STATIC_ASSERT_ENUM(a, b) \
static_assert(static_cast<int>(a) == static_cast<int>(b), \
"mismatching enums: " #a)
namespace media {
namespace {
const char kWatchTimeHistogram[] = "Media.WebMediaPlayerImpl.WatchTime";
void RecordSimpleWatchTimeUMA(RendererType type) {
UMA_HISTOGRAM_ENUMERATION(kWatchTimeHistogram, type);
}
void SetSinkIdOnMediaThread(
scoped_refptr<blink::WebAudioSourceProviderImpl> sink,
const std::string& device_id,
OutputDeviceStatusCB callback) {
sink->SwitchOutputDevice(device_id, std::move(callback));
}
bool IsBackgroundSuspendEnabled(const WebMediaPlayerImpl* wmpi) {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableBackgroundMediaSuspend)) {
return false;
}
return wmpi->IsBackgroundMediaSuspendEnabled();
}
bool IsResumeBackgroundVideosEnabled() {
return base::FeatureList::IsEnabled(kResumeBackgroundVideo);
}
bool IsBackgroundVideoPauseOptimizationEnabled() {
return base::FeatureList::IsEnabled(kBackgroundVideoPauseOptimization);
}
bool IsNetworkStateError(blink::WebMediaPlayer::NetworkState state) {
bool result = state == blink::WebMediaPlayer::kNetworkStateFormatError ||
state == blink::WebMediaPlayer::kNetworkStateNetworkError ||
state == blink::WebMediaPlayer::kNetworkStateDecodeError;
DCHECK_EQ(state > blink::WebMediaPlayer::kNetworkStateLoaded, result);
return result;
}
gfx::Size GetRotatedVideoSize(VideoRotation rotation, gfx::Size natural_size) {
if (rotation == VIDEO_ROTATION_90 || rotation == VIDEO_ROTATION_270)
return gfx::Size(natural_size.height(), natural_size.width());
return natural_size;
}
void RecordEncryptedEvent(bool encrypted_event_fired) {
UMA_HISTOGRAM_BOOLEAN("Media.EME.EncryptedEvent", encrypted_event_fired);
}
// How much time must have elapsed since loading last progressed before we
// assume that the decoder will have had time to complete preroll.
constexpr base::TimeDelta kPrerollAttemptTimeout =
base::TimeDelta::FromSeconds(3);
// Maximum number, per-WMPI, of media logs of playback rate changes.
constexpr int kMaxNumPlaybackRateLogs = 10;
int GetSwitchToLocalMessage(MediaObserverClient::ReasonToSwitchToLocal reason) {
switch (reason) {
case MediaObserverClient::ReasonToSwitchToLocal::NORMAL:
return IDS_MEDIA_REMOTING_STOP_TEXT;
case MediaObserverClient::ReasonToSwitchToLocal::POOR_PLAYBACK_QUALITY:
return IDS_MEDIA_REMOTING_STOP_BY_PLAYBACK_QUALITY_TEXT;
case MediaObserverClient::ReasonToSwitchToLocal::PIPELINE_ERROR:
return IDS_MEDIA_REMOTING_STOP_BY_ERROR_TEXT;
case MediaObserverClient::ReasonToSwitchToLocal::ROUTE_TERMINATED:
return blink::WebMediaPlayerClient::kMediaRemotingStopNoText;
}
NOTREACHED();
// To suppress compiler warning on Windows.
return blink::WebMediaPlayerClient::kMediaRemotingStopNoText;
}
// These values are persisted to UMA. Entries should not be renumbered and
// numeric values should never be reused.
// TODO(crbug.com/825041): This should use EncryptionScheme when kUnencrypted
// removed.
enum class EncryptionSchemeUMA { kCenc = 0, kCbcs = 1, kCount };
EncryptionSchemeUMA DetermineEncryptionSchemeUMAValue(
EncryptionScheme encryption_scheme) {
if (encryption_scheme == EncryptionScheme::kCbcs)
return EncryptionSchemeUMA::kCbcs;
DCHECK_EQ(encryption_scheme, EncryptionScheme::kCenc);
return EncryptionSchemeUMA::kCenc;
}
#if BUILDFLAG(ENABLE_FFMPEG)
// Returns true if |url| represents (or is likely to) a local file.
bool IsLocalFile(const GURL& url) {
return url.SchemeIsFile() || url.SchemeIsFileSystem() ||
url.SchemeIs(url::kContentScheme) ||
url.SchemeIs(url::kContentIDScheme) ||
url.SchemeIs("chrome-extension");
}
#endif
// Handles destruction of media::Renderer dependent components after the
// renderer has been destructed on the media thread.
void DestructionHelper(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> vfc_task_runner,
std::unique_ptr<Demuxer> demuxer,
std::unique_ptr<DataSource> data_source,
std::unique_ptr<VideoFrameCompositor> compositor,
std::unique_ptr<CdmContextRef> cdm_context_1,
std::unique_ptr<CdmContextRef> cdm_context_2,
std::unique_ptr<MediaLog> media_log,
std::unique_ptr<RendererFactorySelector> renderer_factory_selector,
std::unique_ptr<blink::WebSurfaceLayerBridge> bridge,
bool is_chunk_demuxer) {
// We release |bridge| after pipeline stop to ensure layout tests receive
// painted video frames before test harness exit.
main_task_runner->DeleteSoon(FROM_HERE, std::move(bridge));
// Since the media::Renderer is gone we can now destroy the compositor and
// renderer factory selector.
vfc_task_runner->DeleteSoon(FROM_HERE, std::move(compositor));
main_task_runner->DeleteSoon(FROM_HERE, std::move(renderer_factory_selector));
// ChunkDemuxer can be deleted on any thread, but other demuxers are bound to
// the main thread and must be deleted there now that the renderer is gone.
if (!is_chunk_demuxer) {
main_task_runner->DeleteSoon(FROM_HERE, std::move(demuxer));
main_task_runner->DeleteSoon(FROM_HERE, std::move(data_source));
main_task_runner->DeleteSoon(FROM_HERE, std::move(cdm_context_1));
main_task_runner->DeleteSoon(FROM_HERE, std::move(cdm_context_2));
main_task_runner->DeleteSoon(FROM_HERE, std::move(media_log));
return;
}
// ChunkDemuxer's streams may contain much buffered, compressed media that
// may need to be paged back in during destruction. Paging delay may exceed
// the renderer hang monitor's threshold on at least Windows while also
// blocking other work on the renderer main thread, so we do the actual
// destruction in the background without blocking WMPI destruction or
// |task_runner|. On advice of task_scheduler OWNERS, MayBlock() is not
// used because virtual memory overhead is not considered blocking I/O; and
// CONTINUE_ON_SHUTDOWN is used to allow process termination to not block on
// completing the task.
base::ThreadPool::PostTask(
FROM_HERE,
{base::TaskPriority::BEST_EFFORT,
base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN},
base::BindOnce(
[](scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
std::unique_ptr<Demuxer> demuxer_to_destroy,
std::unique_ptr<CdmContextRef> cdm_context_1,
std::unique_ptr<CdmContextRef> cdm_context_2,
std::unique_ptr<MediaLog> media_log) {
SCOPED_UMA_HISTOGRAM_TIMER("Media.MSE.DemuxerDestructionTime");
demuxer_to_destroy.reset();
main_task_runner->DeleteSoon(FROM_HERE, std::move(cdm_context_1));
main_task_runner->DeleteSoon(FROM_HERE, std::move(cdm_context_2));
main_task_runner->DeleteSoon(FROM_HERE, std::move(media_log));
},
std::move(main_task_runner), std::move(demuxer),
std::move(cdm_context_1), std::move(cdm_context_2),
std::move(media_log)));
}
std::string SanitizeUserStringProperty(blink::WebString value) {
std::string converted = value.Utf8();
return base::IsStringUTF8(converted) ? converted : "[invalid property]";
}
void CreateAllocation(base::trace_event::ProcessMemoryDump* pmd,
int32_t id,
const char* name,
int64_t bytes) {
if (bytes <= 0)
return;
auto full_name =
base::StringPrintf("media/webmediaplayer/%s/player_0x%x", name, id);
auto* dump = pmd->CreateAllocatorDump(full_name);
dump->AddScalar(base::trace_event::MemoryAllocatorDump::kNameSize,
base::trace_event::MemoryAllocatorDump::kUnitsBytes, bytes);
auto* std_allocator = base::trace_event::MemoryDumpManager::GetInstance()
->system_allocator_pool_name();
if (std_allocator)
pmd->AddSuballocation(dump->guid(), std_allocator);
}
// Determine whether we should update MediaPosition in |delegate_|.
bool MediaPositionNeedsUpdate(
const media_session::MediaPosition& old_position,
const media_session::MediaPosition& new_position) {
if (old_position.playback_rate() != new_position.playback_rate())
return true;
if (old_position.duration() != new_position.duration())
return true;
// Special handling for "infinite" position required to avoid calculations
// involving infinities.
if (new_position.GetPosition().is_max())
return !old_position.GetPosition().is_max();
// MediaPosition is potentially changed upon each OnTimeUpdate() call. In
// practice most of these calls happen periodically during normal playback,
// with unchanged rate and duration. If we want to avoid updating
// MediaPosition unnecessarily, we need to compare the current time
// calculated from the old and new MediaPositions with some tolerance. That's
// because we don't know the exact time when GetMediaTime() calculated the
// media position. We choose an arbitrary tolerance that is high enough to
// eliminate a lot of MediaPosition updates and low enough not to make a
// perceptible difference.
const auto drift =
(old_position.GetPosition() - new_position.GetPosition()).magnitude();
return drift > base::TimeDelta::FromMilliseconds(100);
}
} // namespace
class BufferedDataSourceHostImpl;
STATIC_ASSERT_ENUM(WebMediaPlayer::kCorsModeUnspecified,
UrlData::CORS_UNSPECIFIED);
STATIC_ASSERT_ENUM(WebMediaPlayer::kCorsModeAnonymous, UrlData::CORS_ANONYMOUS);
STATIC_ASSERT_ENUM(WebMediaPlayer::kCorsModeUseCredentials,
UrlData::CORS_USE_CREDENTIALS);
WebMediaPlayerImpl::WebMediaPlayerImpl(
blink::WebLocalFrame* frame,
blink::WebMediaPlayerClient* client,
blink::WebMediaPlayerEncryptedMediaClient* encrypted_client,
blink::WebMediaPlayerDelegate* delegate,
std::unique_ptr<RendererFactorySelector> renderer_factory_selector,
UrlIndex* url_index,
std::unique_ptr<VideoFrameCompositor> compositor,
std::unique_ptr<WebMediaPlayerParams> params)
: frame_(frame),
main_task_runner_(
frame->GetTaskRunner(blink::TaskType::kMediaElementEvent)),
media_task_runner_(params->media_task_runner()),
worker_task_runner_(params->worker_task_runner()),
media_log_(params->take_media_log()),
client_(client),
encrypted_client_(encrypted_client),
delegate_(delegate),
delegate_has_audio_(HasUnmutedAudio()),
defer_load_cb_(params->defer_load_cb()),
adjust_allocated_memory_cb_(params->adjust_allocated_memory_cb()),
tick_clock_(base::DefaultTickClock::GetInstance()),
url_index_(url_index),
raster_context_provider_(params->raster_context_provider()),
vfc_task_runner_(params->video_frame_compositor_task_runner()),
compositor_(std::move(compositor)),
renderer_factory_selector_(std::move(renderer_factory_selector)),
observer_(params->media_observer()),
enable_instant_source_buffer_gc_(
params->enable_instant_source_buffer_gc()),
embedded_media_experience_enabled_(
params->embedded_media_experience_enabled()),
surface_layer_mode_(params->use_surface_layer_for_video()),
create_bridge_callback_(params->create_bridge_callback()),
request_routing_token_cb_(params->request_routing_token_cb()),
overlay_routing_token_(OverlayInfo::RoutingToken()),
media_metrics_provider_(params->take_metrics_provider()),
is_background_suspend_enabled_(params->IsBackgroundSuspendEnabled()),
is_background_video_playback_enabled_(
params->IsBackgroundVideoPlaybackEnabled()),
is_background_video_track_optimization_supported_(
params->IsBackgroundVideoTrackOptimizationSupported()),
simple_watch_timer_(
base::BindRepeating(&WebMediaPlayerImpl::OnSimpleWatchTimerTick,
base::Unretained(this)),
base::BindRepeating(&WebMediaPlayerImpl::GetCurrentTimeInternal,
base::Unretained(this))),
will_play_helper_(nullptr),
demuxer_override_(params->TakeDemuxerOverride()),
power_status_helper_(params->TakePowerStatusHelper()) {
DVLOG(1) << __func__;
DCHECK(adjust_allocated_memory_cb_);
DCHECK(renderer_factory_selector_);
DCHECK(client_);
DCHECK(delegate_);
weak_this_ = weak_factory_.GetWeakPtr();
// Using base::Unretained(this) is safe because the |pipeline| is owned by
// |this| and the callback will always be made on the main task runner.
// Not using BindToCurrentLoop() because CreateRenderer() is a sync call.
auto pipeline = std::make_unique<PipelineImpl>(
media_task_runner_, main_task_runner_,
base::BindRepeating(&WebMediaPlayerImpl::CreateRenderer,
base::Unretained(this)),
media_log_.get());
pipeline_controller_ = std::make_unique<PipelineController>(
std::move(pipeline),
base::BindRepeating(&WebMediaPlayerImpl::OnPipelineSeeked, weak_this_),
base::BindRepeating(&WebMediaPlayerImpl::OnPipelineSuspended, weak_this_),
base::BindRepeating(&WebMediaPlayerImpl::OnBeforePipelineResume,
weak_this_),
base::BindRepeating(&WebMediaPlayerImpl::OnPipelineResumed, weak_this_),
base::BindRepeating(&WebMediaPlayerImpl::OnError, weak_this_));
buffered_data_source_host_ = std::make_unique<BufferedDataSourceHostImpl>(
base::BindRepeating(&WebMediaPlayerImpl::OnProgress, weak_this_),
tick_clock_);
// If we're supposed to force video overlays, then make sure that they're
// enabled all the time.
always_enable_overlays_ = base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kForceVideoOverlays);
if (base::FeatureList::IsEnabled(kOverlayFullscreenVideo))
overlay_mode_ = OverlayMode::kUseAndroidOverlay;
else
overlay_mode_ = OverlayMode::kNoOverlays;
delegate_id_ = delegate_->AddObserver(this);
delegate_->SetIdle(delegate_id_, true);
media_log_->AddEvent<MediaLogEvent::kWebMediaPlayerCreated>(
url::Origin(frame_->GetSecurityOrigin()).GetURL().spec());
media_log_->SetProperty<MediaLogProperty::kFrameUrl>(
SanitizeUserStringProperty(frame_->GetDocument().Url().GetString()));
media_log_->SetProperty<MediaLogProperty::kFrameTitle>(
SanitizeUserStringProperty(frame_->GetDocument().Title()));
if (params->initial_cdm())
SetCdmInternal(params->initial_cdm());
// Report a false "EncrytpedEvent" here as a baseline.
RecordEncryptedEvent(false);
auto on_audio_source_provider_set_client_callback = base::BindOnce(
[](base::WeakPtr<WebMediaPlayerImpl> self,
blink::WebMediaPlayerClient* const client) {
if (!self)
return;
client->DidDisableAudioOutputSinkChanges();
},
weak_this_, client_);
// TODO(xhwang): When we use an external Renderer, many methods won't work,
// e.g. GetCurrentFrameFromCompositor(). See http://crbug.com/434861
audio_source_provider_ = new blink::WebAudioSourceProviderImpl(
params->audio_renderer_sink(), media_log_.get(),
std::move(on_audio_source_provider_set_client_callback));
if (observer_)
observer_->SetClient(this);
memory_usage_reporting_timer_.SetTaskRunner(
frame_->GetTaskRunner(blink::TaskType::kInternalMedia));
main_thread_mem_dumper_ = std::make_unique<MemoryDumpProviderProxy>(
"WebMediaPlayer_MainThread", main_task_runner_,
base::BindRepeating(&WebMediaPlayerImpl::OnMainThreadMemoryDump,
weak_this_, media_log_->id()));
media_metrics_provider_->AcquirePlaybackEventsRecorder(
playback_events_recorder_.BindNewPipeAndPassReceiver());
// MediaMetricsProvider may drop the request for PlaybackEventsRecorder if
// it's not interested in recording these events.
playback_events_recorder_.reset_on_disconnect();
#if defined(OS_ANDROID)
renderer_factory_selector_->SetRemotePlayStateChangeCB(
BindToCurrentLoop(base::BindRepeating(
&WebMediaPlayerImpl::OnRemotePlayStateChange, weak_this_)));
#endif // defined (OS_ANDROID)
}
WebMediaPlayerImpl::~WebMediaPlayerImpl() {
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
if (set_cdm_result_) {
DVLOG(2)
<< "Resolve pending SetCdmInternal() when media player is destroyed.";
set_cdm_result_->Complete();
set_cdm_result_.reset();
}
suppress_destruction_errors_ = true;
delegate_->PlayerGone(delegate_id_);
delegate_->RemoveObserver(delegate_id_);
delegate_ = nullptr;
// Finalize any watch time metrics before destroying the pipeline.
watch_time_reporter_.reset();
// Unregister dump providers on their corresponding threads.
media_task_runner_->DeleteSoon(FROM_HERE,
std::move(media_thread_mem_dumper_));
main_thread_mem_dumper_.reset();
// The underlying Pipeline must be stopped before it is destroyed.
//
// Note: This destruction happens synchronously on the media thread and
// |demuxer_|, |data_source_|, |compositor_|, and |media_log_| must outlive
// this process. They will be destructed by the DestructionHelper below
// after trampolining through the media thread.
pipeline_controller_->Stop();
if (last_reported_memory_usage_)
adjust_allocated_memory_cb_.Run(-last_reported_memory_usage_);
// Destruct compositor resources in the proper order.
client_->SetCcLayer(nullptr);
client_->MediaRemotingStopped(
blink::WebMediaPlayerClient::kMediaRemotingStopNoText);
if (!surface_layer_for_video_enabled_ && video_layer_)
video_layer_->StopUsingProvider();
simple_watch_timer_.Stop();
media_log_->OnWebMediaPlayerDestroyed();
if (data_source_)
data_source_->Stop();
// Disconnect from the surface layer. We still preserve the |bridge_| until
// after pipeline shutdown to ensure any pending frames are painted for tests.
if (bridge_)
bridge_->ClearObserver();
// Disconnect from the MediaObserver implementation since it's lifetime is
// tied to the RendererFactorySelector which can't be destroyed until after
// the Pipeline stops.
//
// Note: We can't use a WeakPtr with the RendererFactory because its methods
// are called on the media thread and this destruction takes place on the
// renderer thread.
if (observer_)
observer_->SetClient(nullptr);
// If we're in the middle of an observation, then finish it.
will_play_helper_.CompleteObservationIfNeeded(learning::TargetValue(false));
// Handle destruction of things that need to be destructed after the pipeline
// completes stopping on the media thread.
media_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&DestructionHelper, std::move(main_task_runner_),
std::move(vfc_task_runner_), std::move(demuxer_),
std::move(data_source_), std::move(compositor_),
std::move(cdm_context_ref_),
std::move(pending_cdm_context_ref_), std::move(media_log_),
std::move(renderer_factory_selector_), std::move(bridge_),
!!chunk_demuxer_));
}
WebMediaPlayer::LoadTiming WebMediaPlayerImpl::Load(
LoadType load_type,
const blink::WebMediaPlayerSource& source,
CorsMode cors_mode,
bool is_cache_disabled) {
// Only URL or MSE blob URL is supported.
DCHECK(source.IsURL());
blink::WebURL url = source.GetAsURL();
DVLOG(1) << __func__ << "(" << load_type << ", " << GURL(url) << ", "
<< cors_mode << ")";
bool is_deferred = false;
if (defer_load_cb_) {
is_deferred = defer_load_cb_.Run(
base::BindOnce(&WebMediaPlayerImpl::DoLoad, weak_this_, load_type, url,
cors_mode, is_cache_disabled));
} else {
DoLoad(load_type, url, cors_mode, is_cache_disabled);
}
return is_deferred ? LoadTiming::kDeferred : LoadTiming::kImmediate;
}
void WebMediaPlayerImpl::OnWebLayerUpdated() {}
void WebMediaPlayerImpl::RegisterContentsLayer(cc::Layer* layer) {
DCHECK(bridge_);
bridge_->SetContentsOpaque(opaque_);
client_->SetCcLayer(layer);
}
void WebMediaPlayerImpl::UnregisterContentsLayer(cc::Layer* layer) {
// |client_| will unregister its cc::Layer if given a nullptr.
client_->SetCcLayer(nullptr);
}
void WebMediaPlayerImpl::OnSurfaceIdUpdated(viz::SurfaceId surface_id) {
// TODO(726619): Handle the behavior when Picture-in-Picture mode is
// disabled.
// The viz::SurfaceId may be updated when the video begins playback or when
// the size of the video changes.
if (client_)
client_->OnPictureInPictureStateChange();
}
void WebMediaPlayerImpl::EnableOverlay() {
overlay_enabled_ = true;
if (request_routing_token_cb_ &&
overlay_mode_ == OverlayMode::kUseAndroidOverlay) {
overlay_routing_token_is_pending_ = true;
token_available_cb_.Reset(
base::BindOnce(&WebMediaPlayerImpl::OnOverlayRoutingToken, weak_this_));
request_routing_token_cb_.Run(token_available_cb_.callback());
}
// We have requested (and maybe already have) overlay information. If the
// restarted decoder requests overlay information, then we'll defer providing
// it if it hasn't arrived yet. Otherwise, this would be a race, since we
// don't know if the request for overlay info or restart will complete first.
if (decoder_requires_restart_for_overlay_)
ScheduleRestart();
}
void WebMediaPlayerImpl::DisableOverlay() {
overlay_enabled_ = false;
if (overlay_mode_ == OverlayMode::kUseAndroidOverlay) {
token_available_cb_.Cancel();
overlay_routing_token_is_pending_ = false;
overlay_routing_token_ = OverlayInfo::RoutingToken();
}
if (decoder_requires_restart_for_overlay_)
ScheduleRestart();
else
MaybeSendOverlayInfoToDecoder();
}
void WebMediaPlayerImpl::EnteredFullscreen() {
overlay_info_.is_fullscreen = true;
// |always_enable_overlays_| implies that we're already in overlay mode, so
// take no action here. Otherwise, switch to an overlay if it's allowed and
// if it will display properly.
if (!always_enable_overlays_ && overlay_mode_ != OverlayMode::kNoOverlays &&
DoesOverlaySupportMetadata()) {
EnableOverlay();
}
// We send this only if we can send multiple calls. Otherwise, either (a)
// we already sent it and we don't have a callback anyway (we reset it when
// it's called in restart mode), or (b) we'll send this later when the surface
// actually arrives. GVD assumes that the first overlay info will have the
// routing information. Note that we set |is_fullscreen_| earlier, so that
// if EnableOverlay() can include fullscreen info in case it sends the overlay
// info before returning.
if (!decoder_requires_restart_for_overlay_)
MaybeSendOverlayInfoToDecoder();
}
void WebMediaPlayerImpl::ExitedFullscreen() {
overlay_info_.is_fullscreen = false;
// If we're in overlay mode, then exit it unless we're supposed to allow
// overlays all the time.
if (!always_enable_overlays_ && overlay_enabled_)
DisableOverlay();
// See EnteredFullscreen for why we do this.
if (!decoder_requires_restart_for_overlay_)
MaybeSendOverlayInfoToDecoder();
}
void WebMediaPlayerImpl::BecameDominantVisibleContent(bool is_dominant) {
if (observer_)
observer_->OnBecameDominantVisibleContent(is_dominant);
}
void WebMediaPlayerImpl::SetIsEffectivelyFullscreen(
blink::WebFullscreenVideoStatus fullscreen_video_status) {
if (power_status_helper_) {
// We don't care about pip, so anything that's "not fullscreen" is good
// enough for us.
power_status_helper_->SetIsFullscreen(
fullscreen_video_status !=
blink::WebFullscreenVideoStatus::kNotEffectivelyFullscreen);
}
}
void WebMediaPlayerImpl::OnHasNativeControlsChanged(bool has_native_controls) {
if (!watch_time_reporter_)
return;
if (has_native_controls)
watch_time_reporter_->OnNativeControlsEnabled();
else
watch_time_reporter_->OnNativeControlsDisabled();
}
void WebMediaPlayerImpl::OnDisplayTypeChanged(blink::DisplayType display_type) {
if (surface_layer_for_video_enabled_) {
vfc_task_runner_->PostTask(
FROM_HERE,
base::BindOnce(&VideoFrameCompositor::SetForceSubmit,
base::Unretained(compositor_.get()),
display_type == blink::DisplayType::kPictureInPicture));
}
if (!watch_time_reporter_)
return;
switch (display_type) {
case blink::DisplayType::kInline:
watch_time_reporter_->OnDisplayTypeInline();
break;
case blink::DisplayType::kFullscreen:
watch_time_reporter_->OnDisplayTypeFullscreen();
break;
case blink::DisplayType::kPictureInPicture:
watch_time_reporter_->OnDisplayTypePictureInPicture();
// Resumes playback if it was paused when hidden.
if (paused_when_hidden_) {
paused_when_hidden_ = false;
client_->ResumePlayback();
}
break;
}
}
void WebMediaPlayerImpl::DoLoad(LoadType load_type,
const blink::WebURL& url,
CorsMode cors_mode,
bool is_cache_disabled) {
TRACE_EVENT1("media", "WebMediaPlayerImpl::DoLoad", "id", media_log_->id());
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
// Start a new observation. If there was one before, then we didn't play it.
will_play_helper_.CompleteObservationIfNeeded(learning::TargetValue(false));
// For now, send in an empty set of features. We should fill some in here,
// and / or ask blink (via |client_|) for features from the DOM.
learning::FeatureDictionary dict;
will_play_helper_.BeginObservation(dict);
#if defined(OS_ANDROID)
// Only allow credentials if the crossorigin attribute is unspecified
// (kCorsModeUnspecified) or "use-credentials" (kCorsModeUseCredentials).
// This value is only used by the MediaPlayerRenderer.
// See https://crbug.com/936566.
//
// The credentials mode also has repercussions in WouldTaintOrigin(), but we
// access what we need from |mb_data_source_|->cors_mode() directly, instead
// of storing it here.
allow_media_player_renderer_credentials_ = cors_mode != kCorsModeAnonymous;
#endif // defined(OS_ANDROID)
// Note: |url| may be very large, take care when making copies.
loaded_url_ = GURL(url);
load_type_ = load_type;
ReportMetrics(load_type, loaded_url_, *frame_, media_log_.get());
// Set subresource URL for crash reporting; will be truncated to 256 bytes.
static base::debug::CrashKeyString* subresource_url =
base::debug::AllocateCrashKeyString("subresource_url",
base::debug::CrashKeySize::Size256);
base::debug::SetCrashKeyString(subresource_url, loaded_url_.spec());
SetNetworkState(WebMediaPlayer::kNetworkStateLoading);
SetReadyState(WebMediaPlayer::kReadyStateHaveNothing);
// Do a truncation to kMaxUrlLength+1 at most; we can add ellipsis later.
media_log_->AddEvent<MediaLogEvent::kLoad>(
url.GetString().Substring(0, kMaxUrlLength + 1).Utf8());
load_start_time_ = base::TimeTicks::Now();
std::vector<TextTrackConfig> text_configs;
for (const auto& metadata : client_->GetTextTrackMetadata()) {
text_configs.emplace_back(TextTrackConfig::ConvertKind(metadata.kind()),
metadata.label(), metadata.language(),
metadata.id());
}
media_log_->SetProperty<MediaLogProperty::kTextTracks>(text_configs);
// If we're adapting, then restart the smoothness experiment.
if (smoothness_helper_)
smoothness_helper_.reset();
media_metrics_provider_->Initialize(
load_type == kLoadTypeMediaSource,
load_type == kLoadTypeURL ? blink::GetMediaURLScheme(loaded_url_)
: mojom::MediaURLScheme::kUnknown,
mojom::MediaStreamType::kNone);
if (demuxer_override_ || load_type == kLoadTypeMediaSource) {
// If a demuxer override was specified or a Media Source pipeline will be
// used, the pipeline can start immediately.
StartPipeline();
} else {
// If |loaded_url_| is remoting media, starting the pipeline.
if (loaded_url_.SchemeIs(remoting::kRemotingScheme)) {
StartPipeline();
return;
}
// Short circuit the more complex loading path for data:// URLs. Sending
// them through the network based loading path just wastes memory and causes
// worse performance since reads become asynchronous.
if (loaded_url_.SchemeIs(url::kDataScheme)) {
std::string mime_type, charset, data;
if (!net::DataURL::Parse(loaded_url_, &mime_type, &charset, &data) ||
data.empty()) {
DataSourceInitialized(false);
return;
}
// Replace |loaded_url_| with an empty data:// URL since it may be large.
loaded_url_ = GURL("data:,");
// Mark all the data as buffered.
buffered_data_source_host_->SetTotalBytes(data.size());
buffered_data_source_host_->AddBufferedByteRange(0, data.size());
DCHECK(!mb_data_source_);
data_source_ = std::make_unique<MemoryDataSource>(std::move(data));
DataSourceInitialized(true);
return;
}
auto url_data = url_index_->GetByUrl(
url, static_cast<UrlData::CorsMode>(cors_mode),
is_cache_disabled ? UrlIndex::kCacheDisabled : UrlIndex::kNormal);
mb_data_source_ = new MultiBufferDataSource(
main_task_runner_, std::move(url_data), media_log_.get(),
buffered_data_source_host_.get(),
base::BindRepeating(&WebMediaPlayerImpl::NotifyDownloading,
weak_this_));
data_source_.reset(mb_data_source_);
mb_data_source_->OnRedirect(base::BindRepeating(
&WebMediaPlayerImpl::OnDataSourceRedirected, weak_this_));
mb_data_source_->SetPreload(preload_);
mb_data_source_->SetIsClientAudioElement(client_->IsAudioElement());
mb_data_source_->Initialize(
base::BindOnce(&WebMediaPlayerImpl::DataSourceInitialized, weak_this_));
}
}
void WebMediaPlayerImpl::Play() {
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
// User initiated play unlocks background video playback.
if (frame_->HasTransientUserActivation())
video_locked_when_paused_when_hidden_ = false;
// TODO(sandersd): Do we want to reset the idle timer here?
delegate_->SetIdle(delegate_id_, false);
paused_ = false;
pipeline_controller_->SetPlaybackRate(playback_rate_);
background_pause_timer_.Stop();
if (observer_)
observer_->OnPlaying();
// Try to create the smoothness helper, in case we were paused before.
UpdateSmoothnessHelper();
if (playback_events_recorder_)
playback_events_recorder_->OnPlaying();
watch_time_reporter_->SetAutoplayInitiated(client_->WasAutoplayInitiated());
// If we're seeking we'll trigger the watch time reporter upon seek completed;
// we don't want to start it here since the seek time is unstable. E.g., when
// playing content with a positive start time we would have a zero seek time.
if (!Seeking()) {
DCHECK(watch_time_reporter_);
watch_time_reporter_->OnPlaying();
}
if (video_decode_stats_reporter_)
video_decode_stats_reporter_->OnPlaying();
simple_watch_timer_.Start();
media_metrics_provider_->SetHasPlayed();
media_log_->AddEvent<MediaLogEvent::kPlay>();
MaybeUpdateBufferSizesForPlayback();
UpdatePlayState();
// Notify the learning task, if needed.
will_play_helper_.CompleteObservationIfNeeded(learning::TargetValue(true));
}
void WebMediaPlayerImpl::Pause() {
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
// We update the paused state even when casting, since we expect pause() to be
// called when casting begins, and when we exit casting we should end up in a
// paused state.
paused_ = true;
// No longer paused because it was hidden.
paused_when_hidden_ = false;
UpdateSmoothnessHelper();
// User initiated pause locks background videos.
if (frame_->HasTransientUserActivation())
video_locked_when_paused_when_hidden_ = true;
pipeline_controller_->SetPlaybackRate(0.0);
// For states <= kReadyStateHaveMetadata, we may not have a renderer yet.
if (highest_ready_state_ > WebMediaPlayer::kReadyStateHaveMetadata)
paused_time_ = pipeline_controller_->GetMediaTime();
if (observer_)
observer_->OnPaused();
if (playback_events_recorder_)
playback_events_recorder_->OnPaused();
DCHECK(watch_time_reporter_);
watch_time_reporter_->OnPaused();
if (video_decode_stats_reporter_)
video_decode_stats_reporter_->OnPaused();
simple_watch_timer_.Stop();
media_log_->AddEvent<MediaLogEvent::kPause>();
UpdatePlayState();
}
void WebMediaPlayerImpl::Seek(double seconds) {
DVLOG(1) << __func__ << "(" << seconds << "s)";
DCHECK(main_task_runner_->BelongsToCurrentThread());
media_log_->AddEvent<MediaLogEvent::kSeek>(seconds);
DoSeek(base::TimeDelta::FromSecondsD(seconds), true);
}
void WebMediaPlayerImpl::DoSeek(base::TimeDelta time, bool time_updated) {
DCHECK(main_task_runner_->BelongsToCurrentThread());
TRACE_EVENT2("media", "WebMediaPlayerImpl::DoSeek", "target",
time.InSecondsF(), "id", media_log_->id());
ReadyState old_state = ready_state_;
if (ready_state_ > WebMediaPlayer::kReadyStateHaveMetadata)
SetReadyState(WebMediaPlayer::kReadyStateHaveMetadata);
// When paused or ended, we know exactly what the current time is and can
// elide seeks to it. However, there are two cases that are not elided:
// 1) When the pipeline state is not stable.
// In this case we just let |pipeline_controller_| decide what to do, as
// it has complete information.
// 2) For MSE.
// Because the buffers may have changed between seeks, MSE seeks are
// never elided.
if (paused_ && pipeline_controller_->IsStable() &&
(paused_time_ == time ||
(ended_ && time == base::TimeDelta::FromSecondsD(Duration()))) &&
!chunk_demuxer_) {
// If the ready state was high enough before, we can indicate that the seek
// completed just by restoring it. Otherwise we will just wait for the real
// ready state change to eventually happen.
if (old_state == kReadyStateHaveEnoughData) {
main_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&WebMediaPlayerImpl::OnBufferingStateChange,
weak_this_, BUFFERING_HAVE_ENOUGH,
BUFFERING_CHANGE_REASON_UNKNOWN));
}
return;
}
if (playback_events_recorder_)
playback_events_recorder_->OnSeeking();
// Call this before setting |seeking_| so that the current media time can be
// recorded by the reporter.
if (watch_time_reporter_)
watch_time_reporter_->OnSeeking();
// Send the seek updates only when the seek pipeline hasn't started,
// OnPipelineSeeked is not called yet.
if (!seeking_)
client_->DidSeek();
// TODO(sandersd): Move |seeking_| to PipelineController.
// TODO(sandersd): Do we want to reset the idle timer here?
delegate_->SetIdle(delegate_id_, false);
ended_ = false;
seeking_ = true;
seek_time_ = time;
if (paused_)
paused_time_ = time;
pipeline_controller_->Seek(time, time_updated);
// This needs to be called after Seek() so that if a resume is triggered, it
// is to the correct time.
UpdatePlayState();
}