gecko-dev/dom/html/HTMLVideoElement.cpp

376 строки
10 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLVideoElement.h"
#include "mozilla/dom/HTMLVideoElementBinding.h"
#include "nsGenericHTMLElement.h"
#include "nsGkAtoms.h"
#include "nsSize.h"
#include "nsError.h"
#include "nsNodeInfoManager.h"
#include "plbase64.h"
#include "prlock.h"
#include "nsThreadUtils.h"
#include "ImageContainer.h"
#include "VideoFrameContainer.h"
#include "nsIScriptSecurityManager.h"
#include "nsIXPConnect.h"
#include "nsITimer.h"
#include "FrameStatistics.h"
#include "MediaError.h"
#include "MediaDecoder.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/WakeLock.h"
#include "mozilla/dom/power/PowerManagerService.h"
#include "mozilla/dom/Performance.h"
#include "mozilla/dom/TimeRanges.h"
#include "mozilla/dom/VideoPlaybackQuality.h"
#include <algorithm>
#include <limits>
NS_IMPL_NS_NEW_HTML_ELEMENT(Video)
namespace mozilla {
namespace dom {
static bool sVideoStatsEnabled;
NS_IMPL_ELEMENT_CLONE(HTMLVideoElement)
HTMLVideoElement::HTMLVideoElement(already_AddRefed<NodeInfo>& aNodeInfo)
: HTMLMediaElement(aNodeInfo)
, mIsOrientationLocked(false)
{
DecoderDoctorLogger::LogConstruction(this);
}
HTMLVideoElement::~HTMLVideoElement()
{
DecoderDoctorLogger::LogDestruction(this);
}
nsresult HTMLVideoElement::GetVideoSize(nsIntSize* size)
{
if (!mMediaInfo.HasVideo()) {
return NS_ERROR_FAILURE;
}
if (mDisableVideo) {
return NS_ERROR_FAILURE;
}
switch (mMediaInfo.mVideo.mRotation) {
case VideoInfo::Rotation::kDegree_90:
case VideoInfo::Rotation::kDegree_270: {
size->width = mMediaInfo.mVideo.mDisplay.height;
size->height = mMediaInfo.mVideo.mDisplay.width;
break;
}
case VideoInfo::Rotation::kDegree_0:
case VideoInfo::Rotation::kDegree_180:
default: {
size->height = mMediaInfo.mVideo.mDisplay.height;
size->width = mMediaInfo.mVideo.mDisplay.width;
break;
}
}
return NS_OK;
}
bool
HTMLVideoElement::ParseAttribute(int32_t aNamespaceID,
nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult)
{
if (aAttribute == nsGkAtoms::width || aAttribute == nsGkAtoms::height) {
return aResult.ParseSpecialIntValue(aValue);
}
return HTMLMediaElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
void
HTMLVideoElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
GenericSpecifiedValues* aData)
{
nsGenericHTMLElement::MapImageSizeAttributesInto(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}
NS_IMETHODIMP_(bool)
HTMLVideoElement::IsAttributeMapped(const nsAtom* aAttribute) const
{
static const MappedAttributeEntry attributes[] = {
{ &nsGkAtoms::width },
{ &nsGkAtoms::height },
{ nullptr }
};
static const MappedAttributeEntry* const map[] = {
attributes,
sCommonAttributeMap
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc
HTMLVideoElement::GetAttributeMappingFunction() const
{
return &MapAttributesIntoRule;
}
nsresult HTMLVideoElement::SetAcceptHeader(nsIHttpChannel* aChannel)
{
nsAutoCString value(
"video/webm,"
"video/ogg,"
"video/*;q=0.9,"
"application/ogg;q=0.7,"
"audio/*;q=0.6,*/*;q=0.5");
return aChannel->SetRequestHeader(NS_LITERAL_CSTRING("Accept"),
value,
false);
}
bool
HTMLVideoElement::IsInteractiveHTMLContent(bool aIgnoreTabindex) const
{
return HasAttr(kNameSpaceID_None, nsGkAtoms::controls) ||
HTMLMediaElement::IsInteractiveHTMLContent(aIgnoreTabindex);
}
uint32_t HTMLVideoElement::MozParsedFrames() const
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
if (!IsVideoStatsEnabled()) {
return 0;
}
if (nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
return nsRFPService::GetSpoofedTotalFrames(TotalPlayTime());
}
return mDecoder ? mDecoder->GetFrameStatistics().GetParsedFrames() : 0;
}
uint32_t HTMLVideoElement::MozDecodedFrames() const
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
if (!IsVideoStatsEnabled()) {
return 0;
}
if (nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
return nsRFPService::GetSpoofedTotalFrames(TotalPlayTime());
}
return mDecoder ? mDecoder->GetFrameStatistics().GetDecodedFrames() : 0;
}
uint32_t HTMLVideoElement::MozPresentedFrames() const
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
if (!IsVideoStatsEnabled()) {
return 0;
}
if (nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
return nsRFPService::GetSpoofedPresentedFrames(TotalPlayTime(), VideoWidth(), VideoHeight());
}
return mDecoder ? mDecoder->GetFrameStatistics().GetPresentedFrames() : 0;
}
uint32_t HTMLVideoElement::MozPaintedFrames()
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
if (!IsVideoStatsEnabled()) {
return 0;
}
if (nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
return nsRFPService::GetSpoofedPresentedFrames(TotalPlayTime(), VideoWidth(), VideoHeight());
}
layers::ImageContainer* container = GetImageContainer();
return container ? container->GetPaintCount() : 0;
}
double HTMLVideoElement::MozFrameDelay()
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
if (!IsVideoStatsEnabled() ||
nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
return 0.0;
}
VideoFrameContainer* container = GetVideoFrameContainer();
// Hide negative delays. Frame timing tweaks in the compositor (e.g.
// adding a bias value to prevent multiple dropped/duped frames when
// frame times are aligned with composition times) may produce apparent
// negative delay, but we shouldn't report that.
return container ? std::max(0.0, container->GetFrameDelay()) : 0.0;
}
bool HTMLVideoElement::MozHasAudio() const
{
MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread.");
return HasAudio();
}
JSObject*
HTMLVideoElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLVideoElementBinding::Wrap(aCx, this, aGivenProto);
}
FrameStatistics*
HTMLVideoElement::GetFrameStatistics()
{
return mDecoder ? &(mDecoder->GetFrameStatistics()) : nullptr;
}
already_AddRefed<VideoPlaybackQuality>
HTMLVideoElement::GetVideoPlaybackQuality()
{
DOMHighResTimeStamp creationTime = 0;
uint32_t totalFrames = 0;
uint32_t droppedFrames = 0;
uint32_t corruptedFrames = 0;
if (IsVideoStatsEnabled()) {
if (nsPIDOMWindowInner* window = OwnerDoc()->GetInnerWindow()) {
Performance* perf = window->GetPerformance();
if (perf) {
creationTime = perf->Now();
}
}
if (mDecoder) {
if (nsContentUtils::ShouldResistFingerprinting(OwnerDoc())) {
totalFrames = nsRFPService::GetSpoofedTotalFrames(TotalPlayTime());
droppedFrames = nsRFPService::GetSpoofedDroppedFrames(TotalPlayTime(),
VideoWidth(),
VideoHeight());
corruptedFrames = 0;
} else {
FrameStatisticsData stats =
mDecoder->GetFrameStatistics().GetFrameStatisticsData();
if (sizeof(totalFrames) >= sizeof(stats.mParsedFrames)) {
totalFrames = stats.mPresentedFrames + stats.mDroppedFrames;
droppedFrames = stats.mDroppedFrames;
} else {
uint64_t total = stats.mPresentedFrames + stats.mDroppedFrames;
const auto maxNumber = std::numeric_limits<uint32_t>::max();
if (total <= maxNumber) {
totalFrames = uint32_t(total);
droppedFrames = uint32_t(stats.mDroppedFrames);
} else {
// Too big number(s) -> Resize everything to fit in 32 bits.
double ratio = double(maxNumber) / double(total);
totalFrames = maxNumber; // === total * ratio
droppedFrames = uint32_t(double(stats.mDroppedFrames) * ratio);
}
}
corruptedFrames = 0;
}
}
}
RefPtr<VideoPlaybackQuality> playbackQuality =
new VideoPlaybackQuality(this, creationTime, totalFrames, droppedFrames,
corruptedFrames);
return playbackQuality.forget();
}
void
HTMLVideoElement::WakeLockCreate()
{
HTMLMediaElement::WakeLockCreate();
UpdateScreenWakeLock();
}
void
HTMLVideoElement::WakeLockRelease()
{
UpdateScreenWakeLock();
HTMLMediaElement::WakeLockRelease();
}
void
HTMLVideoElement::UpdateScreenWakeLock()
{
if (mScreenWakeLock && mPaused) {
ErrorResult rv;
mScreenWakeLock->Unlock(rv);
rv.SuppressException();
mScreenWakeLock = nullptr;
return;
}
if (!mScreenWakeLock && !mPaused && HasVideo()) {
RefPtr<power::PowerManagerService> pmService =
power::PowerManagerService::GetInstance();
NS_ENSURE_TRUE_VOID(pmService);
ErrorResult rv;
mScreenWakeLock = pmService->NewWakeLock(NS_LITERAL_STRING("video-playing"),
OwnerDoc()->GetInnerWindow(),
rv);
}
}
void
HTMLVideoElement::Init()
{
Preferences::AddBoolVarCache(&sVideoStatsEnabled, "media.video_stats.enabled");
}
/* static */
bool
HTMLVideoElement::IsVideoStatsEnabled()
{
return sVideoStatsEnabled;
}
double
HTMLVideoElement::TotalPlayTime() const
{
double total = 0.0;
if (mPlayed) {
uint32_t timeRangeCount = mPlayed->Length();
for (uint32_t i = 0; i < timeRangeCount; i++) {
double begin = mPlayed->Start(i);
double end = mPlayed->End(i);
total += end - begin;
}
if (mCurrentPlayRangeStart != -1.0) {
double now = CurrentTime();
if (mCurrentPlayRangeStart != now) {
total += now - mCurrentPlayRangeStart;
}
}
}
return total;
}
} // namespace dom
} // namespace mozilla