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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/bind_helpers.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/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/task/post_task.h"
#include "base/task_runner_util.h"
#include "base/threading/thread_task_runner_handle.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "cc/layers/video_layer.h"
#include "components/viz/common/gpu/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/text_renderer.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_frame.h"
#include "media/blink/texttrack_impl.h"
#include "media/blink/url_index.h"
#include "media/blink/video_decode_stats_reporter.h"
#include "media/blink/watch_time_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/media_buildflags.h"
#include "net/base/data_url.h"
#include "third_party/blink/public/platform/web_encrypted_media_types.h"
#include "third_party/blink/public/platform/web_localized_string.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_rect.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_size.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_url.h"
#include "third_party/blink/public/platform/webaudiosourceprovider_impl.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_user_gesture_indicator.h"
#include "third_party/blink/public/web/web_view.h"
#if defined(OS_ANDROID)
#include "media/base/android/media_codec_util.h"
#endif
using blink::WebMediaPlayer;
using blink::WebRect;
using blink::WebSize;
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(RendererFactorySelector::FactoryType type) {
UMA_HISTOGRAM_ENUMERATION(kWatchTimeHistogram, type,
RendererFactorySelector::FACTORY_TYPE_MAX + 1);
}
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) {
// TODO(crbug.com/867146): remove these switches.
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableMediaSuspend))
return false;
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableMediaSuspend))
return true;
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;
blink::WebLocalizedString::Name GetSwitchToLocalMessage(
MediaObserverClient::ReasonToSwitchToLocal reason) {
switch (reason) {
case MediaObserverClient::ReasonToSwitchToLocal::NORMAL:
return blink::WebLocalizedString::kMediaRemotingStopText;
case MediaObserverClient::ReasonToSwitchToLocal::POOR_PLAYBACK_QUALITY:
return blink::WebLocalizedString::kMediaRemotingStopByPlaybackQualityText;
case MediaObserverClient::ReasonToSwitchToLocal::PIPELINE_ERROR:
return blink::WebLocalizedString::kMediaRemotingStopByErrorText;
case MediaObserverClient::ReasonToSwitchToLocal::ROUTE_TERMINATED:
return blink::WebLocalizedString::kMediaRemotingStopNoText;
}
NOTREACHED();
// To suppress compiler warning on Windows.
return blink::WebLocalizedString::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 EncryptionMode when kUnencrypted
// removed.
enum class EncryptionSchemeUMA { kCenc = 0, kCbcs = 1, kCount };
EncryptionSchemeUMA DetermineEncryptionSchemeUMAValue(
const EncryptionScheme& encryption_scheme) {
if (encryption_scheme.mode() == EncryptionScheme::CIPHER_MODE_AES_CBC)
return EncryptionSchemeUMA::kCbcs;
DCHECK_EQ(encryption_scheme.mode(), EncryptionScheme::CIPHER_MODE_AES_CTR);
return EncryptionSchemeUMA::kCenc;
}
EncryptionMode DetermineEncryptionMode(
const EncryptionScheme& encryption_scheme) {
switch (encryption_scheme.mode()) {
case EncryptionScheme::CIPHER_MODE_UNENCRYPTED:
return EncryptionMode::kUnencrypted;
case EncryptionScheme::CIPHER_MODE_AES_CTR:
return EncryptionMode::kCenc;
case EncryptionScheme::CIPHER_MODE_AES_CBC:
return EncryptionMode::kCbcs;
}
}
#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::PostTask(
FROM_HERE,
{base::ThreadPool(), 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)));
}
} // 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),
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),
context_provider_(params->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()),
reported_renderer_type_(RendererFactorySelector::DEFAULT),
simple_watch_timer_(
base::BindRepeating(&WebMediaPlayerImpl::OnSimpleWatchTimerTick,
base::Unretained(this)),
base::BindRepeating(&WebMediaPlayerImpl::GetCurrentTimeInternal,
base::Unretained(this))) {
DVLOG(1) << __func__;
DCHECK(adjust_allocated_memory_cb_);
DCHECK(renderer_factory_selector_);
DCHECK(client_);
DCHECK(delegate_);
weak_this_ = weak_factory_.GetWeakPtr();
pipeline_controller_ = std::make_unique<PipelineController>(
std::make_unique<PipelineImpl>(media_task_runner_, main_task_runner_,
media_log_.get()),
base::BindRepeating(&WebMediaPlayerImpl::CreateRenderer,
base::Unretained(this)),
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)) {
bool use_android_overlay = base::FeatureList::IsEnabled(kUseAndroidOverlay);
overlay_mode_ = use_android_overlay ? OverlayMode::kUseAndroidOverlay
: OverlayMode::kUseContentVideoView;
} else {
overlay_mode_ = OverlayMode::kNoOverlays;
}
delegate_id_ = delegate_->AddObserver(this);
delegate_->SetIdle(delegate_id_, true);
media_log_->AddEvent(media_log_->CreateCreatedEvent(
url::Origin(frame_->GetSecurityOrigin()).GetURL().spec()));
media_log_->SetStringProperty("frame_url",
frame_->GetDocument().Url().GetString().Utf8());
media_log_->SetStringProperty("frame_title",
frame_->GetDocument().Title().Utf8());
// To make manual testing easier, include |surface_layer_mode_| in the log.
// TODO(liberato): Move this into media_factory.cc, so that it can be shared
// with the MediaStream startup.
const char* surface_layer_mode_name = "(unset)";
switch (surface_layer_mode_) {
case SurfaceLayerMode::kAlways:
surface_layer_mode_name = "kAlways";
break;
case SurfaceLayerMode::kOnDemand:
surface_layer_mode_name = "kOnDemand";
break;
case SurfaceLayerMode::kNever:
surface_layer_mode_name = "kNever";
break;
}
media_log_->SetStringProperty("surface_layer_mode", surface_layer_mode_name);
if (params->initial_cdm())
SetCdmInternal(params->initial_cdm());
// Report a false "EncrytpedEvent" here as a baseline.
RecordEncryptedEvent(false);
// 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());
if (observer_)
observer_->SetClient(this);
memory_usage_reporting_timer_.SetTaskRunner(
frame_->GetTaskRunner(blink::TaskType::kInternalMedia));
if (frame_->IsAdSubframe())
media_metrics_provider_->SetIsAdMedia();
#if defined(OS_ANDROID)
renderer_factory_selector_->SetRemotePlayStateChangeCB(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_);
// Finalize any watch time metrics before destroying the pipeline.
watch_time_reporter_.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::WebLocalizedString::kMediaRemotingStopNoText);
if (!surface_layer_for_video_enabled_ && video_layer_)
video_layer_->StopUsingProvider();
simple_watch_timer_.Stop();
media_log_->AddEvent(
media_log_->CreateEvent(MediaLogEvent::WEBMEDIAPLAYER_DESTROYED));
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);
// 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) {
// 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));
} else {
DoLoad(load_type, url, cors_mode);
}
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();
}
bool WebMediaPlayerImpl::SupportsOverlayFullscreenVideo() {
#if defined(OS_ANDROID)
return !using_media_player_renderer_ &&
overlay_mode_ == OverlayMode::kUseContentVideoView;
#else
return false;
#endif
}
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::Bind(&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::kUseContentVideoView) {
surface_created_cb_.Cancel();
} else 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 isDominant) {
if (observer_)
observer_->OnBecameDominantVisibleContent(isDominant);
}
void WebMediaPlayerImpl::SetIsEffectivelyFullscreen(
blink::WebFullscreenVideoStatus fullscreen_video_status) {
delegate_->SetIsEffectivelyFullscreen(delegate_id_, fullscreen_video_status);
}
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(
WebMediaPlayer::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 == WebMediaPlayer::DisplayType::kPictureInPicture));
}
if (!watch_time_reporter_)
return;
switch (display_type) {
case WebMediaPlayer::DisplayType::kInline:
watch_time_reporter_->OnDisplayTypeInline();
break;
case WebMediaPlayer::DisplayType::kFullscreen:
watch_time_reporter_->OnDisplayTypeFullscreen();
break;
case WebMediaPlayer::DisplayType::kPictureInPicture:
watch_time_reporter_->OnDisplayTypePictureInPicture();
// Resumes playback if it was paused when hidden.
if (paused_when_hidden_) {
paused_when_hidden_ = false;
OnPlay();
}
break;
}
}
void WebMediaPlayerImpl::DoLoad(LoadType load_type,
const blink::WebURL& url,
CorsMode cors_mode) {
TRACE_EVENT1("media", "WebMediaPlayerImpl::DoLoad", "id", media_log_->id());
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
#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);
media_log_->AddEvent(media_log_->CreateLoadEvent(url.GetString().Utf8()));
load_start_time_ = base::TimeTicks::Now();
media_metrics_provider_->Initialize(
load_type == kLoadTypeMediaSource,
load_type == kLoadTypeURL ? blink::GetMediaURLScheme(loaded_url_)
: mojom::MediaURLScheme::kUnknown);
// Media source pipelines can start immediately.
if (load_type == kLoadTypeMediaSource) {
StartPipeline();
} else {
// 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_.reset(new MemoryDataSource(std::move(data)));
DataSourceInitialized(true);
return;
}
auto url_data =
url_index_->GetByUrl(url, static_cast<UrlData::CorsMode>(cors_mode));
// Notify |this| of bytes received by the network.
url_data->AddBytesReceivedCallback(BindToCurrentLoop(
base::BindRepeating(&WebMediaPlayerImpl::OnBytesReceived, weak_this_)));
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_->SetPreload(preload_);
mb_data_source_->SetIsClientAudioElement(client_->IsAudioElement());
mb_data_source_->Initialize(
base::Bind(&WebMediaPlayerImpl::DataSourceInitialized, weak_this_));
}
}
void WebMediaPlayerImpl::Play() {
DVLOG(1) << __func__;
DCHECK(main_task_runner_->BelongsToCurrentThread());
// User initiated play unlocks background video playback.
if (blink::WebUserGestureIndicator::IsProcessingUserGesture(frame_))
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();
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(media_log_->CreateEvent(MediaLogEvent::PLAY));
MaybeUpdateBufferSizesForPlayback();
UpdatePlayState();
}
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;
// User initiated pause locks background videos.
if (blink::WebUserGestureIndicator::IsProcessingUserGesture(frame_))
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();
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(media_log_->CreateEvent(MediaLogEvent::PAUSE));
// Paused changed so we should update media position state.
UpdateMediaPositionState();
UpdatePlayState();
}
void WebMediaPlayerImpl::Seek(double seconds) {
DVLOG(1) << __func__ << "(" << seconds << "s)";
DCHECK(main_task_runner_->BelongsToCurrentThread());
media_log_->AddEvent(
media_log_->CreateTimeEvent(MediaLogEvent::SEEK, "seek_target", 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;
}
// 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();
// 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();
// The seek time has changed so we should update the media position state.
UpdateMediaPositionState();
}
void WebMediaPlayerImpl::SetRate(double rate) {
DVLOG(1) << __func__ << "(" << rate << ")";
DCHECK(main_task_runner_->BelongsToCurrentThread());
if (rate != playback_rate_) {
LIMITED_MEDIA_LOG(INFO, media_log_.get(), num_playback_rate_logs_,
kMaxNumPlaybackRateLogs)
<< "Effective playback rate changed from " << playback_rate_ << " to "
<< rate;
}
playback_rate_ = rate;
if (!paused_)
pipeline_controller_->SetPlaybackRate(rate);
MaybeUpdateBufferSizesForPlayback();
}
void WebMediaPlayerImpl::SetVolume(double volume) {
DVLOG(1) << __func__ << "(" << volume << ")";
DCHECK(main_task_runner_->BelongsToCurrentThread());
volume_ = volume;
pipeline_controller_->SetVolume(volume_ * volume_multiplier_);
if (watch_time_reporter_)
watch_time_reporter_->OnVolumeChange(volume);
delegate_->DidPlayerMutedStatusChange(delegate_id_, volume == 0.0);
// The play state is updated because the player might have left the autoplay
// muted state.
UpdatePlayState();
}
void WebMediaPlayerImpl::OnRequestPictureInPicture() {
if (!surface_layer_for_video_enabled_)
ActivateSurfaceLayerForVideo();
DCHECK(bridge_);
DCHECK(bridge_->GetSurfaceId().is_valid());
}
void WebMediaPlayerImpl::SetSinkId(
const blink::WebString& sink_id,
blink::WebSetSinkIdCompleteCallback completion_callback) {
DCHECK(main_task_runner_->BelongsToCurrentThread());
DVLOG(1) << __func__;
OutputDeviceStatusCB callback =
ConvertToOutputDeviceStatusCB(std::move(completion_callback));
media_task_runner_->PostTask(
FROM_HERE, base::BindOnce(&SetSinkIdOnMediaThread, audio_source_provider_,
sink_id.Utf8(), std::move(callback)));
}
STATIC_ASSERT_ENUM(WebMediaPlayer::kPreloadNone, MultibufferDataSource::NONE);
STATIC_ASSERT_ENUM(WebMediaPlayer::kPreloadMetaData,
MultibufferDataSource::METADATA);
STATIC_ASSERT_ENUM(WebMediaPlayer::kPreloadAuto, MultibufferDataSource::AUTO);
void WebMediaPlayerImpl::SetPreload(WebMediaPlayer::Preload preload) {
DVLOG(1) << __func__ << "(" << preload << ")";
DCHECK(main_task_runner_->BelongsToCurrentThread());
preload_ = static_cast<MultibufferDataSource::Preload>(preload);
if (mb_data_source_)
mb_data_source_->SetPreload(preload_);
}
bool WebMediaPlayerImpl::HasVideo() const {
DCHECK(main_task_runner_->BelongsToCurrentThread());
return pipeline_metadata_.has_video;
}
bool WebMediaPlayerImpl::HasAudio() const {
DCHECK(main_task_runner_->BelongsToCurrentThread());
return pipeline_metadata_.has_audio;
}
void WebMediaPlayerImpl::EnabledAudioTracksChanged(
const blink::WebVector<blink::WebMediaPlayer::TrackId>& enabledTrackIds) {
DCHECK(main_task_runner_->BelongsToCurrentThread());
std::ostringstream logstr;
std::vector<MediaTrack::Id> enabledMediaTrackIds;
for (const auto& blinkTrackId : enabledTrackIds) {
const auto track_id = MediaTrack::Id(blinkTrackId.Utf8().data());
logstr << track_id << " ";
enabledMediaTrackIds.push_back(track_id);
}
MEDIA_LOG(INFO, media_log_.get())
<< "Enabled audio tracks: [" << logstr.str() << "]";
pipeline_controller_->OnEnabledAudioTracksChanged(enabledMediaTrackIds);
}
void WebMediaPlayerImpl::SelectedVideoTrackChanged(
blink::WebMediaPlayer::TrackId* selectedTrackId) {
DCHECK(main_task_runner_->BelongsToCurrentThread());
base::Optional<MediaTrack::Id> selected_video_track_id;
if (selectedTrackId && !video_track_disabled_)
selected_video_track_id = MediaTrack::Id(selectedTrackId->Utf8().data());