Bug Summary

File:root/firefox-clang/dom/media/MediaFormatReader.h
Warning:line 365, column 10
Excessive padding in 'struct mozilla::MediaFormatReader::DecoderData' (34 padding bytes, where 2 is optimal). Optimal fields order: mOwner, mTrackDemuxer, mTaskQueue, mDecoder, mDecodePerfRecorder, mSeekRequest, mQueuedSamples, mDemuxRequest, mWaitingPromise, mDecodeRequest, mShutdownPromise, mDrainRequest, mOutput, mNumSamplesInput, mNumSamplesOutput, mNumSamplesOutputTotal, mNumSamplesSkippedTotal, mSizeOfQueue, mOriginalInfo, mWorkingInfo, mInfo, mDescription, mProcessName, mCodecName, mWaitingForDataStartTime, mMeanRate, mFirstFrameTime, mLastTimeRangesEnd, mFirstDemuxedSampleTime, mError, mMutex, mLastDecodedSampleTime, mTimeThreshold, mTimeRanges, mDrainState, mNumOfConsecutiveDecodingError, mMaxConsecutiveDecodingError, mNumOfConsecutiveRDDOrGPUCrashes, mMaxConsecutiveRDDOrGPUCrashes, mNumOfConsecutiveUtilityCrashes, mMaxConsecutiveUtilityCrashes, mIsHardwareAccelerated, mLastStreamSourceID, mNextStreamSourceID, mType, mUpdateScheduled, mDemuxEOS, mWaitingForKey, mReceivedNewData, mFlushing, mFlushed, mIsNullDecode, mHardwareDecodingDisabled, mHasReportedVideoHardwareSupportTelemtry, consider reordering the fields or adding explicit padding members

Annotated Source Code

Press '?' to see keyboard shortcuts

clang -cc1 -cc1 -triple x86_64-pc-linux-gnu -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name Unified_cpp_dom_html4.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -analyzer-config-compatibility-mode=true -mrelocation-model pic -pic-level 2 -fhalf-no-semantic-interposition -mframe-pointer=all -relaxed-aliasing -ffp-contract=off -fno-rounding-math -mconstructor-aliases -funwind-tables=2 -target-cpu x86-64 -tune-cpu generic -debugger-tuning=gdb -fdebug-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/html -fcoverage-compilation-dir=/root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/html -resource-dir /usr/lib/llvm-21/lib/clang/21 -include /root/firefox-clang/config/gcc_hidden.h -include /root/firefox-clang/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D _GLIBCXX_ASSERTIONS -D DEBUG=1 -D MOZ_HAS_MOZGLUE -D MOZILLA_INTERNAL_API -D IMPL_LIBXUL -D MOZ_SUPPORT_LEAKCHECKING -D STATIC_EXPORTABLE_JS_API -I /root/firefox-clang/dom/html -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dom/html -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I /root/firefox-clang/ipc/chromium/src -I /root/firefox-clang/caps -I /root/firefox-clang/docshell/base -I /root/firefox-clang/dom/base -I /root/firefox-clang/dom/canvas -I /root/firefox-clang/dom/html/input -I /root/firefox-clang/dom/media -I /root/firefox-clang/dom/security -I /root/firefox-clang/dom/xul -I /root/firefox-clang/image -I /root/firefox-clang/layout/forms -I /root/firefox-clang/layout/generic -I /root/firefox-clang/layout/style -I /root/firefox-clang/layout/tables -I /root/firefox-clang/layout/xul -I /root/firefox-clang/netwerk/base -I /root/firefox-clang/parser/htmlparser -I /root/firefox-clang/third_party/abseil-cpp -I /root/firefox-clang/third_party/libwebrtc -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /root/firefox-clang/obj-x86_64-pc-linux-gnu/dist/include/nss -D MOZILLA_CLIENT -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/x86_64-linux-gnu/c++/14 -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../include/c++/14/backward -internal-isystem /usr/lib/llvm-21/lib/clang/21/include -internal-isystem /usr/local/include -internal-isystem /usr/lib/gcc/x86_64-linux-gnu/14/../../../../x86_64-linux-gnu/include -internal-externc-isystem /usr/include/x86_64-linux-gnu -internal-externc-isystem /include -internal-externc-isystem /usr/include -O2 -Wno-error=pessimizing-move -Wno-error=large-by-value-copy=128 -Wno-error=implicit-int-float-conversion -Wno-error=thread-safety-analysis -Wno-error=tautological-type-limit-compare -Wno-invalid-offsetof -Wno-range-loop-analysis -Wno-deprecated-anon-enum-enum-conversion -Wno-deprecated-enum-enum-conversion -Wno-deprecated-this-capture -Wno-inline-new-delete -Wno-error=deprecated-declarations -Wno-error=array-bounds -Wno-error=free-nonheap-object -Wno-error=atomic-alignment -Wno-error=deprecated-builtins -Wno-psabi -Wno-error=builtin-macro-redefined -Wno-vla-cxx-extension -Wno-unknown-warning-option -fdeprecated-macro -ferror-limit 19 -fstrict-flex-arrays=1 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fno-rtti -fgnuc-version=4.2.1 -fskip-odr-check-in-gmf -fno-sized-deallocation -fno-aligned-allocation -vectorize-loops -vectorize-slp -analyzer-checker optin.performance.Padding -analyzer-output=html -analyzer-config stable-report-filename=true -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /tmp/scan-build-2025-06-27-100320-3286336-1 -x c++ Unified_cpp_dom_html4.cpp
1/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2/* vim:set ts=2 sw=2 sts=2 et cindent: */
3/* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7#if !defined(MediaFormatReader_h_)
8# define MediaFormatReader_h_
9
10# include "FrameStatistics.h"
11# include "MediaDataDemuxer.h"
12# include "MediaEventSource.h"
13# include "MediaMetadataManager.h"
14# include "MediaPromiseDefs.h"
15# include "PlatformDecoderModule.h"
16# include "SeekTarget.h"
17# include "mozilla/Atomics.h"
18# include "mozilla/Maybe.h"
19# include "mozilla/MozPromise.h"
20# include "mozilla/Mutex.h"
21# include "mozilla/StateMirroring.h"
22# include "mozilla/StaticPrefs_media.h"
23# include "mozilla/TaskQueue.h"
24# include "mozilla/TimeStamp.h"
25# include "mozilla/ThreadSafeWeakPtr.h"
26# include "mozilla/dom/MediaDebugInfoBinding.h"
27
28namespace mozilla {
29
30class CDMProxy;
31class GMPCrashHelper;
32class MediaResource;
33class VideoFrameContainer;
34
35struct WaitForDataRejectValue {
36 enum Reason { SHUTDOWN, CANCELED };
37
38 WaitForDataRejectValue(MediaData::Type aType, Reason aReason)
39 : mType(aType), mReason(aReason) {}
40 MediaData::Type mType;
41 Reason mReason;
42};
43
44struct SeekRejectValue {
45 MOZ_IMPLICIT SeekRejectValue(const MediaResult& aError)
46 : mType(MediaData::Type::NULL_DATA), mError(aError) {}
47 MOZ_IMPLICIT SeekRejectValue(nsresult aResult)
48 : mType(MediaData::Type::NULL_DATA), mError(aResult) {}
49 SeekRejectValue(MediaData::Type aType, const MediaResult& aError)
50 : mType(aType), mError(aError) {}
51 MediaData::Type mType;
52 MediaResult mError;
53};
54
55struct MetadataHolder {
56 UniquePtr<MediaInfo> mInfo;
57 UniquePtr<MetadataTags> mTags;
58};
59
60using MediaDecoderOwnerID = void*;
61
62struct MOZ_STACK_CLASS MediaFormatReaderInit {
63 MediaResource* mResource = nullptr;
64 VideoFrameContainer* mVideoFrameContainer = nullptr;
65 FrameStatistics* mFrameStats = nullptr;
66 already_AddRefed<layers::KnowsCompositor> mKnowsCompositor;
67 already_AddRefed<GMPCrashHelper> mCrashHelper;
68 // Used in bug 1393399 for temporary telemetry.
69 MediaDecoderOwnerID mMediaDecoderOwnerID = nullptr;
70 Maybe<TrackingId> mTrackingId;
71};
72
73DDLoggedTypeDeclName(MediaFormatReader)class MediaFormatReader; template <> struct DDLoggedTypeTraits
<MediaFormatReader> { using Type = MediaFormatReader; static
constexpr const char* Name() { return "MediaFormatReader"; }
using HasBase = std::false_type; using BaseType = MediaFormatReader
; static constexpr const char* BaseTypeName() { return ""; } }
;;
74
75class MediaFormatReader final
76 : public SupportsThreadSafeWeakPtr<MediaFormatReader>,
77 public DecoderDoctorLifeLogger<MediaFormatReader> {
78 static const bool IsExclusive = true;
79 using TrackType = TrackInfo::TrackType;
80 using NotifyDataArrivedPromise = MozPromise<bool, MediaResult, IsExclusive>;
81
82 public:
83 MOZ_DECLARE_REFCOUNTED_TYPENAME(MediaFormatReader)const char* typeName() const { return "MediaFormatReader"; } size_t
typeSize() const { return sizeof(*this); }
84
85 using TrackSet = EnumSet<TrackInfo::TrackType>;
86 using MetadataPromise = MozPromise<MetadataHolder, MediaResult, IsExclusive>;
87
88 template <typename Type>
89 using DataPromise = MozPromise<RefPtr<Type>, MediaResult, IsExclusive>;
90 using AudioDataPromise = DataPromise<AudioData>;
91 using VideoDataPromise = DataPromise<VideoData>;
92
93 using SeekPromise = MozPromise<media::TimeUnit, SeekRejectValue, IsExclusive>;
94
95 // Note that, conceptually, WaitForData makes sense in a non-exclusive sense.
96 // But in the current architecture it's only ever used exclusively (by MDSM),
97 // so we mark it that way to verify our assumptions. If you have a use-case
98 // for multiple WaitForData consumers, feel free to flip the exclusivity here.
99 using WaitForDataPromise =
100 MozPromise<MediaData::Type, WaitForDataRejectValue, IsExclusive>;
101
102 MediaFormatReader(MediaFormatReaderInit& aInit, MediaDataDemuxer* aDemuxer);
103 virtual ~MediaFormatReader();
104
105 // Initializes the reader, returns NS_OK on success, or NS_ERROR_FAILURE
106 // on failure.
107 nsresult Init();
108
109 size_t SizeOfVideoQueueInFrames();
110 size_t SizeOfAudioQueueInFrames();
111
112 // Requests one video sample from the reader.
113 RefPtr<VideoDataPromise> RequestVideoData(
114 const media::TimeUnit& aTimeThreshold,
115 bool aRequestNextVideoKeyFrame = false);
116
117 // Requests one audio sample from the reader.
118 //
119 // The decode should be performed asynchronously, and the promise should
120 // be resolved when it is complete.
121 RefPtr<AudioDataPromise> RequestAudioData();
122
123 // The default implementation of AsyncReadMetadata is implemented in terms of
124 // synchronous ReadMetadata() calls. Implementations may also
125 // override AsyncReadMetadata to create a more proper async implementation.
126 RefPtr<MetadataPromise> AsyncReadMetadata();
127
128 // Fills aInfo with the latest cached data required to present the media,
129 // ReadUpdatedMetadata will always be called once ReadMetadata has succeeded.
130 void ReadUpdatedMetadata(MediaInfo* aInfo);
131
132 RefPtr<SeekPromise> Seek(const SeekTarget& aTarget);
133
134 // Called once new data has been cached by the MediaResource.
135 // mBuffered should be recalculated and updated accordingly.
136 void NotifyDataArrived();
137
138 // Update ID for the external playback engine. Currently it's only used on
139 // Windows when the media engine playback is enabled.
140 void UpdateMediaEngineId(uint64_t aMediaEngineId);
141
142 // This function will be called if the media key is set before playback
143 // starts, indicating the playback should be encrypted.
144 void SetEncryptedCustomIdent();
145
146 bool IsEncryptedCustomIdent() const { return mEncryptedCustomIdent; }
147
148 protected:
149 // Recomputes mBuffered.
150 void UpdateBuffered();
151
152 public:
153 // Called by MDSM in dormant state to release resources allocated by this
154 // reader. The reader can resume decoding by calling Seek() to a specific
155 // position.
156 void ReleaseResources();
157
158 bool OnTaskQueue() const { return OwnerThread()->IsCurrentThreadIn(); }
159
160 // Resets all state related to decoding, emptying all buffers etc.
161 // Cancels all pending Request*Data() request callbacks, rejects any
162 // outstanding seek promises, and flushes the decode pipeline. The
163 // decoder must not call any of the callbacks for outstanding
164 // Request*Data() calls after this is called. Calls to Request*Data()
165 // made after this should be processed as usual.
166 //
167 // Normally this call preceedes a Seek() call, or shutdown.
168 //
169 // aParam is a set of TrackInfo::TrackType enums specifying which
170 // queues need to be reset, defaulting to both audio and video tracks.
171 nsresult ResetDecode(const TrackSet& aTracks);
172
173 // Destroys the decoding state. The reader cannot be made usable again.
174 // This is different from ReleaseMediaResources() as it is irreversable,
175 // whereas ReleaseMediaResources() is. Must be called on the decode
176 // thread.
177 RefPtr<ShutdownPromise> Shutdown();
178
179 // Returns true if this decoder reader uses hardware accelerated video
180 // decoding.
181 bool VideoIsHardwareAccelerated() const;
182
183 // By default, the state machine polls the reader once per second when it's
184 // in buffering mode. Some readers support a promise-based mechanism by which
185 // they notify the state machine when the data arrives.
186 bool IsWaitForDataSupported() const { return true; }
187
188 RefPtr<WaitForDataPromise> WaitForData(MediaData::Type aType);
189
190 // The MediaDecoderStateMachine uses various heuristics that assume that
191 // raw media data is arriving sequentially from a network channel. This
192 // makes sense in the <video src="foo"> case, but not for more advanced use
193 // cases like MSE.
194 bool UseBufferingHeuristics() const { return mTrackDemuxersMayBlock; }
195
196 RefPtr<SetCDMPromise> SetCDMProxy(CDMProxy* aProxy);
197
198 // Requests that the MediaFormatReader populates aInfo with debug information.
199 // This may be done asynchronously, and aInfo should *not* be accessed by the
200 // caller until the returned promise is resolved or rejected.
201 RefPtr<GenericPromise> RequestDebugInfo(
202 dom::MediaFormatReaderDebugInfo& aInfo);
203
204 // Switch the video decoder to NullDecoderModule. It might takes effective
205 // since a few samples later depends on how much demuxed samples are already
206 // queued in the original video decoder.
207 void SetVideoNullDecode(bool aIsNullDecode);
208
209 void UpdateCompositor(already_AddRefed<layers::KnowsCompositor>);
210
211 void UpdateDuration(const media::TimeUnit& aDuration) {
212 MOZ_ASSERT(OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(OnTaskQueue()))), 0))) { do {
} while (false); MOZ_ReportAssertionFailure("OnTaskQueue()",
"/root/firefox-clang/dom/media/MediaFormatReader.h", 212); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 212); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
213 UpdateBuffered();
214 }
215
216 AbstractCanonical<media::TimeIntervals>* CanonicalBuffered() {
217 return &mBuffered;
218 }
219
220 TaskQueue* OwnerThread() const { return mTaskQueue; }
221
222 TimedMetadataEventSource& TimedMetadataEvent() { return mTimedMetadataEvent; }
223
224 // Notified by the OggDemuxer during playback when chained ogg is detected.
225 MediaEventSource<void>& OnMediaNotSeekable() { return mOnMediaNotSeekable; }
226
227 TimedMetadataEventProducer& TimedMetadataProducer() {
228 return mTimedMetadataEvent;
229 }
230
231 MediaEventProducer<void>& MediaNotSeekableProducer() {
232 return mOnMediaNotSeekable;
233 }
234
235 // Notified if the reader can't decode a sample due to a missing decryption
236 // key.
237 MediaEventSource<TrackInfo::TrackType>& OnTrackWaitingForKey() {
238 return mOnTrackWaitingForKey;
239 }
240
241 MediaEventProducer<TrackInfo::TrackType>& OnTrackWaitingForKeyProducer() {
242 return mOnTrackWaitingForKey;
243 }
244
245 MediaEventSource<nsTArray<uint8_t>, nsString>& OnEncrypted() {
246 return mOnEncrypted;
247 }
248
249 MediaEventSource<void>& OnWaitingForKey() { return mOnWaitingForKey; }
250
251 MediaEventSource<MediaResult>& OnDecodeWarning() { return mOnDecodeWarning; }
252
253 MediaEventProducer<VideoInfo, AudioInfo>& OnTrackInfoUpdatedEvent() {
254 return mTrackInfoUpdatedEvent;
255 }
256
257 template <typename T>
258 friend struct DDLoggedTypeTraits; // For DecoderData
259
260 private:
261 bool HasVideo() const { return mVideo.mTrackDemuxer; }
262 bool HasAudio() const { return mAudio.mTrackDemuxer; }
263
264 bool IsWaitingOnCDMResource();
265
266 bool InitDemuxer();
267 // Notify the track demuxers that new data has been received.
268 void NotifyTrackDemuxers();
269 void ReturnOutput(MediaData* aData, TrackType aTrack);
270
271 // Enqueues a task to call Update(aTrack) on the decoder task queue.
272 // Lock for corresponding track must be held.
273 void ScheduleUpdate(TrackType aTrack);
274 void Update(TrackType aTrack);
275 // Handle actions should more data be received.
276 // Returns true if no more action is required.
277 bool UpdateReceivedNewData(TrackType aTrack);
278 // Called when new samples need to be demuxed.
279 void RequestDemuxSamples(TrackType aTrack);
280 // Handle demuxed samples by the input behavior.
281 void HandleDemuxedSamples(TrackType aTrack,
282 FrameStatistics::AutoNotifyDecoded& aA);
283 // Decode any pending already demuxed samples.
284 void DecodeDemuxedSamples(TrackType aTrack, MediaRawData* aSample);
285
286 struct InternalSeekTarget {
287 InternalSeekTarget(const media::TimeInterval& aTime, bool aDropTarget)
288 : mTime(aTime),
289 mDropTarget(aDropTarget),
290 mWaiting(false),
291 mHasSeeked(false) {}
292
293 media::TimeUnit Time() const { return mTime.mStart; }
294 media::TimeUnit EndTime() const { return mTime.mEnd; }
295 bool Contains(const media::TimeUnit& aTime) const {
296 return mTime.Contains(aTime);
297 }
298
299 media::TimeInterval mTime;
300 bool mDropTarget;
301 // Whether known waiting for more raw packets, either for the random
302 // access point or dependent frames.
303 bool mWaiting;
304 // Whether `MediaTrackDemuxer::Seek()` has found the preceding random
305 // access point.
306 bool mHasSeeked;
307 };
308
309 // Perform an internal seek to aTime. If aDropTarget is true then
310 // the first sample past the target will be dropped.
311 void InternalSeek(TrackType aTrack, const InternalSeekTarget& aTarget);
312 // Return the end time of the internal seek target if it exists. Otherwise,
313 // return infinity.
314 media::TimeUnit GetInternalSeekTargetEndTime() const;
315
316 // Drain the current decoder.
317 void DrainDecoder(TrackType aTrack);
318 void NotifyNewOutput(TrackType aTrack,
319 MediaDataDecoder::DecodedData&& aResults);
320 void NotifyError(TrackType aTrack, const MediaResult& aError);
321 void NotifyWaitingForData(TrackType aTrack);
322 void NotifyWaitingForKey(TrackType aTrack);
323 void NotifyEndOfStream(TrackType aTrack);
324
325 void ExtractCryptoInitData(nsTArray<uint8_t>& aInitData);
326
327 // Initializes mLayersBackendType if possible.
328 void InitLayersBackendType();
329
330 void Reset(TrackType aTrack);
331 void DropDecodedSamples(TrackType aTrack);
332
333 // Return a target timeunit which the reader should skip to, this would be
334 // either the timethreshold we pass, or the time of the next keyframe. Return
335 // nothing if we don't need to skip.
336 // @param aTimeThreshold
337 // The time that we expect the time of next video frame should be or go beyond
338 // @param aRequestNextVideoKeyFrame
339 // If true and the next keyframe's time is larger than aTimeThreshold, skip to
340 // the next keyframe time instead of aTimeThreshold.
341 Maybe<media::TimeUnit> ShouldSkip(media::TimeUnit aTimeThreshold,
342 bool aRequestNextVideoKeyFrame);
343
344 void SetVideoDecodeThreshold();
345
346 size_t SizeOfQueue(TrackType aTrack);
347
348 void NotifyTrackInfoUpdated();
349
350 enum class DrainState {
351 None,
352 DrainRequested,
353 Draining,
354 PartialDrainPending,
355 DrainCompleted,
356 DrainAborted,
357 };
358
359 class SharedShutdownPromiseHolder : public MozPromiseHolder<ShutdownPromise> {
360 NS_INLINE_DECL_THREADSAFE_REFCOUNTING(SharedShutdownPromiseHolder)public: MozExternalRefCountType AddRef(void) { static_assert(
!std::is_destructible_v<SharedShutdownPromiseHolder>, "Reference-counted class "
"SharedShutdownPromiseHolder" " should not have a public destructor. "
"Make this class's destructor non-public"); do { static_assert
( mozilla::detail::AssertionConditionType<decltype(int32_t
(mRefCnt) >= 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) >= 0))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) >= 0"
" (" "illegal refcnt" ")", "/root/firefox-clang/dom/media/MediaFormatReader.h"
, 360); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
") (" "illegal refcnt" ")"); do { MOZ_CrashSequence(__null, 360
); __attribute__((nomerge)) ::abort(); } while (false); } } while
(false); nsrefcnt count = ++mRefCnt; NS_LogAddRef((this), (count
), ("SharedShutdownPromiseHolder"), (uint32_t)(sizeof(*this))
); return (nsrefcnt)count; } MozExternalRefCountType Release(
void) { do { static_assert( mozilla::detail::AssertionConditionType
<decltype(int32_t(mRefCnt) > 0)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(int32_t(mRefCnt) > 0))), 0
))) { do { } while (false); MOZ_ReportAssertionFailure("int32_t(mRefCnt) > 0"
" (" "dup release" ")", "/root/firefox-clang/dom/media/MediaFormatReader.h"
, 360); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
") (" "dup release" ")"); do { MOZ_CrashSequence(__null, 360
); __attribute__((nomerge)) ::abort(); } while (false); } } while
(false); nsrefcnt count = --mRefCnt; NS_LogRelease((this), (
count), ("SharedShutdownPromiseHolder")); if (count == 0) { delete
(this); return 0; } return count; } using HasThreadSafeRefCnt
= std::true_type; protected: ::mozilla::ThreadSafeAutoRefCnt
mRefCnt; public:
361 private:
362 ~SharedShutdownPromiseHolder() = default;
363 };
364
365 struct DecoderData {
Excessive padding in 'struct mozilla::MediaFormatReader::DecoderData' (34 padding bytes, where 2 is optimal). Optimal fields order: mOwner, mTrackDemuxer, mTaskQueue, mDecoder, mDecodePerfRecorder, mSeekRequest, mQueuedSamples, mDemuxRequest, mWaitingPromise, mDecodeRequest, mShutdownPromise, mDrainRequest, mOutput, mNumSamplesInput, mNumSamplesOutput, mNumSamplesOutputTotal, mNumSamplesSkippedTotal, mSizeOfQueue, mOriginalInfo, mWorkingInfo, mInfo, mDescription, mProcessName, mCodecName, mWaitingForDataStartTime, mMeanRate, mFirstFrameTime, mLastTimeRangesEnd, mFirstDemuxedSampleTime, mError, mMutex, mLastDecodedSampleTime, mTimeThreshold, mTimeRanges, mDrainState, mNumOfConsecutiveDecodingError, mMaxConsecutiveDecodingError, mNumOfConsecutiveRDDOrGPUCrashes, mMaxConsecutiveRDDOrGPUCrashes, mNumOfConsecutiveUtilityCrashes, mMaxConsecutiveUtilityCrashes, mIsHardwareAccelerated, mLastStreamSourceID, mNextStreamSourceID, mType, mUpdateScheduled, mDemuxEOS, mWaitingForKey, mReceivedNewData, mFlushing, mFlushed, mIsNullDecode, mHardwareDecodingDisabled, mHasReportedVideoHardwareSupportTelemtry, consider reordering the fields or adding explicit padding members
366 DecoderData(MediaFormatReader* aOwner, MediaData::Type aType,
367 uint32_t aNumOfMaxError)
368 : mOwner(aOwner),
369 mType(aType),
370 mMutex("DecoderData"),
371 mDescription("uninitialized"),
372 mProcessName(""),
373 mCodecName(""),
374 mUpdateScheduled(false),
375 mDemuxEOS(false),
376 mWaitingForDataStartTime(Nothing()),
377 mWaitingForKey(false),
378 mReceivedNewData(false),
379 mFlushing(false),
380 mFlushed(true),
381 mDrainState(DrainState::None),
382 mNumOfConsecutiveDecodingError(0),
383 mMaxConsecutiveDecodingError(aNumOfMaxError),
384 mNumOfConsecutiveRDDOrGPUCrashes(0),
385 mMaxConsecutiveRDDOrGPUCrashes(
386 StaticPrefs::media_rdd_process_max_crashes()),
387 mNumOfConsecutiveUtilityCrashes(0),
388 mMaxConsecutiveUtilityCrashes(
389 StaticPrefs::media_utility_process_max_crashes()),
390 mFirstFrameTime(Some(media::TimeUnit::Zero())),
391 mNumSamplesInput(0),
392 mNumSamplesOutput(0),
393 mNumSamplesOutputTotal(0),
394 mNumSamplesSkippedTotal(0),
395 mSizeOfQueue(0),
396 mIsHardwareAccelerated(false),
397 mLastStreamSourceID(UINT32_MAX(4294967295U)),
398 mIsNullDecode(false),
399 mHardwareDecodingDisabled(false) {
400 DecoderDoctorLogger::LogConstruction("MediaFormatReader::DecoderData",
401 this);
402 }
403
404 ~DecoderData() {
405 DecoderDoctorLogger::LogDestruction("MediaFormatReader::DecoderData",
406 this);
407 }
408
409 MediaFormatReader* mOwner;
410 // Disambiguate Audio vs Video.
411 MediaData::Type mType;
412 RefPtr<MediaTrackDemuxer> mTrackDemuxer;
413 // TaskQueue on which decoder can choose to decode.
414 // Only non-null up until the decoder is created.
415 RefPtr<TaskQueue> mTaskQueue;
416
417 // Mutex protecting mDescription, mDecoder, mTrackDemuxer, mWorkingInfo,
418 // mProcessName and mCodecName as those can be read outside the TaskQueue.
419 // They are only written on the TaskQueue however, as such mMutex doesn't
420 // need to be held when those members are read on the TaskQueue.
421 Mutex mMutex MOZ_UNANNOTATED;
422 // The platform decoder.
423 RefPtr<MediaDataDecoder> mDecoder;
424 nsCString mDescription;
425 nsCString mProcessName;
426 nsCString mCodecName;
427 void ShutdownDecoder();
428
429 // Only accessed from reader's task queue.
430 bool mUpdateScheduled;
431 bool mDemuxEOS;
432 Maybe<TimeStamp> mWaitingForDataStartTime;
433 bool mWaitingForKey;
434 bool mReceivedNewData;
435 UniquePtr<PerformanceRecorderMulti<PlaybackStage>> mDecodePerfRecorder;
436
437 // Pending seek.
438 MozPromiseRequestHolder<MediaTrackDemuxer::SeekPromise> mSeekRequest;
439
440 // Queued demuxed samples waiting to be decoded.
441 nsTArray<RefPtr<MediaRawData>> mQueuedSamples;
442 MozPromiseRequestHolder<MediaTrackDemuxer::SamplesPromise> mDemuxRequest;
443 // A WaitingPromise is pending if the demuxer is waiting for data or
444 // if the decoder is waiting for a key.
445 MozPromiseHolder<WaitForDataPromise> mWaitingPromise;
446 bool HasWaitingPromise() const {
447 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 447); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 447); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
448 return !mWaitingPromise.IsEmpty();
449 }
450
451 bool IsWaitingForData() const {
452 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 452); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 452); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
453 return !!mWaitingForDataStartTime;
454 }
455
456 bool IsWaitingForKey() const {
457 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 457); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 457); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
458 return mWaitingForKey && mDecodeRequest.Exists();
459 }
460
461 // MediaDataDecoder handler's variables.
462 MozPromiseRequestHolder<MediaDataDecoder::DecodePromise> mDecodeRequest;
463 bool mFlushing; // True if flush is in action.
464 // Set to true if the last operation run on the decoder was a flush.
465 bool mFlushed;
466 RefPtr<SharedShutdownPromiseHolder> mShutdownPromise;
467
468 MozPromiseRequestHolder<MediaDataDecoder::DecodePromise> mDrainRequest;
469 DrainState mDrainState;
470 bool HasPendingDrain() const { return mDrainState != DrainState::None; }
471 bool HasCompletedDrain() const {
472 return mDrainState == DrainState::DrainCompleted ||
473 mDrainState == DrainState::DrainAborted;
474 }
475 void RequestDrain();
476
477 void StartRecordDecodingPerf(const TrackType aTrack,
478 const MediaRawData* aSample);
479
480 // Track decoding error and fail when we hit the limit.
481 uint32_t mNumOfConsecutiveDecodingError;
482 uint32_t mMaxConsecutiveDecodingError;
483
484 // Track RDD or GPU process crashes and fail when we hit the limit.
485 uint32_t mNumOfConsecutiveRDDOrGPUCrashes;
486 uint32_t mMaxConsecutiveRDDOrGPUCrashes;
487
488 // Track Utility process crashes and fail when we hit the limit.
489 uint32_t mNumOfConsecutiveUtilityCrashes;
490 uint32_t mMaxConsecutiveUtilityCrashes;
491
492 // Set when we haven't yet decoded the first frame.
493 // Cleared once the first frame has been decoded.
494 // This is used to determine, upon error, if we should try again to decode
495 // the frame, or skip to the next keyframe.
496 Maybe<media::TimeUnit> mFirstFrameTime;
497
498 Maybe<MediaResult> mError;
499 bool HasFatalError() const {
500 if (!mError.isSome()) {
501 return false;
502 }
503 if (mError.ref() == NS_ERROR_DOM_MEDIA_DECODE_ERR) {
504 // Allow decode errors to be non-fatal, but give up
505 // if we have too many, or if warnings should be treated as errors.
506 return mNumOfConsecutiveDecodingError > mMaxConsecutiveDecodingError ||
507 StaticPrefs::media_playback_warnings_as_errors();
508 }
509 if (mError.ref() == NS_ERROR_DOM_MEDIA_NEED_NEW_DECODER) {
510 // If the caller asked for a new decoder we shouldn't treat
511 // it as fatal.
512 return false;
513 }
514 if (mError.ref() == NS_ERROR_DOM_MEDIA_REMOTE_CRASHED_RDD_OR_GPU_ERR) {
515 // Allow RDD crashes to be non-fatal, but give up
516 // if we have too many, or if warnings should be treated as errors.
517 return mNumOfConsecutiveRDDOrGPUCrashes >
518 mMaxConsecutiveRDDOrGPUCrashes ||
519 StaticPrefs::media_playback_warnings_as_errors();
520 }
521 if (mError.ref() == NS_ERROR_DOM_MEDIA_REMOTE_CRASHED_UTILITY_ERR) {
522 bool tooManyConsecutiveCrashes =
523 mNumOfConsecutiveUtilityCrashes > mMaxConsecutiveUtilityCrashes;
524 // TODO: Telemetry?
525 return tooManyConsecutiveCrashes ||
526 StaticPrefs::media_playback_warnings_as_errors();
527 }
528 if (mError.ref() == NS_ERROR_DOM_MEDIA_REMOTE_CRASHED_MF_CDM_ERR) {
529 return false;
530 }
531 // All other error types are fatal
532 return true;
533 }
534
535 // If set, all decoded samples prior mTimeThreshold will be dropped.
536 // Used for internal seeking when a change of stream is detected or when
537 // encountering data discontinuity.
538 Maybe<InternalSeekTarget> mTimeThreshold;
539 // Time of last decoded sample returned.
540 Maybe<media::TimeInterval> mLastDecodedSampleTime;
541
542 // Decoded samples returned my mDecoder awaiting being returned to
543 // state machine upon request.
544 nsTArray<RefPtr<MediaData>> mOutput;
545 uint64_t mNumSamplesInput;
546 uint64_t mNumSamplesOutput;
547 uint64_t mNumSamplesOutputTotal;
548 uint64_t mNumSamplesSkippedTotal;
549
550 // These get overridden in the templated concrete class.
551 // Indicate if we have a pending promise for decoded frame.
552 // Rejecting the promise will stop the reader from decoding ahead.
553 virtual bool HasPromise() const = 0;
554 virtual void RejectPromise(const MediaResult& aError,
555 StaticString aMethodName) = 0;
556
557 // Clear track demuxer related data.
558 void ResetDemuxer() {
559 mDemuxRequest.DisconnectIfExists();
560 mSeekRequest.DisconnectIfExists();
561 mTrackDemuxer->Reset();
562 mQueuedSamples.Clear();
563 }
564
565 // Flush the decoder if present and reset decoding related data.
566 // Following a flush, the decoder is ready to accept any new data.
567 void Flush();
568
569 bool CancelWaitingForKey() {
570 if (!mWaitingForKey) {
571 return false;
572 }
573 mWaitingForKey = false;
574 if (IsWaitingForData() || !HasWaitingPromise()) {
575 return false;
576 }
577 mWaitingPromise.Resolve(mType, __func__);
578 return true;
579 }
580
581 // Reset the state of the DecoderData, clearing all queued frames
582 // (pending demuxed and decoded).
583 // The track demuxer is *not* reset.
584 void ResetState() {
585 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 585); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 585); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
586 mDemuxEOS = false;
587 mWaitingForDataStartTime.reset();
588 mQueuedSamples.Clear();
589 mDecodeRequest.DisconnectIfExists();
590 mDrainRequest.DisconnectIfExists();
591 mDrainState = DrainState::None;
592 CancelWaitingForKey();
593 mTimeThreshold.reset();
594 mLastDecodedSampleTime.reset();
595 mOutput.Clear();
596 mNumSamplesInput = 0;
597 mNumSamplesOutput = 0;
598 mSizeOfQueue = 0;
599 mNextStreamSourceID.reset();
600 if (!HasFatalError()) {
601 mError.reset();
602 }
603 }
604
605 // Return whether an InternalSeek() has been requested but has not yet
606 // seeked to the random access point preceding that target.
607 bool HasInternalSeekPending() const {
608 return mTimeThreshold && !mTimeThreshold.ref().mHasSeeked;
609 }
610
611 // Return the current TrackInfo in the stream. If the stream content never
612 // changed since AsyncReadMetadata was called then the TrackInfo used is
613 // mOriginalInfo, other it will be mInfo. The later case is only ever true
614 // with MSE or the WebMDemuxer.
615 const TrackInfo* GetCurrentInfo() const {
616 if (mInfo) {
617 return *mInfo;
618 }
619 return mOriginalInfo.get();
620 }
621 // Return the current TrackInfo updated as per the decoder output.
622 // Typically for audio, the number of channels and/or sampling rate can vary
623 // between what was found in the metadata and what the decoder returned.
624 const TrackInfo* GetWorkingInfo() const { return mWorkingInfo.get(); }
625 bool IsEncrypted() const { return GetCurrentInfo()->mCrypto.IsEncrypted(); }
626
627 // Used by the MDSM for logging purposes.
628 Atomic<size_t> mSizeOfQueue;
629 // Used by the MDSM to determine if video decoding is hardware accelerated.
630 // This value is updated after a frame is successfully decoded.
631 Atomic<bool> mIsHardwareAccelerated;
632 // Sample format monitoring.
633 uint32_t mLastStreamSourceID;
634 Maybe<uint32_t> mNextStreamSourceID;
635 media::TimeIntervals mTimeRanges;
636 Maybe<media::TimeUnit> mLastTimeRangesEnd;
637 // TrackInfo as first discovered during ReadMetadata.
638 UniquePtr<TrackInfo> mOriginalInfo;
639 // Written exclusively on the TaskQueue, can be read on MDSM's TaskQueue.
640 // Must be read with parent's mutex held.
641 UniquePtr<TrackInfo> mWorkingInfo;
642 RefPtr<TrackInfoSharedPtr> mInfo;
643 Maybe<media::TimeUnit> mFirstDemuxedSampleTime;
644 // Use NullDecoderModule or not.
645 bool mIsNullDecode;
646 bool mHardwareDecodingDisabled;
647 // Whether we have reported hardware decoding support for video. Used only
648 // on reader's task queue,
649 bool mHasReportedVideoHardwareSupportTelemtry = false;
650
651 class {
652 public:
653 float Mean() const { return mMean; }
654
655 void Update(const media::TimeUnit& aValue) {
656 if (aValue == media::TimeUnit::Zero()) {
657 return;
658 }
659 mMean += static_cast<float>((1.0f / aValue.ToSeconds() - mMean) /
660 static_cast<double>(++mCount));
661 }
662
663 void Reset() {
664 mMean = 0;
665 mCount = 0;
666 }
667
668 private:
669 float mMean = 0;
670 uint64_t mCount = 0;
671 } mMeanRate;
672 };
673
674 template <typename Type>
675 class DecoderDataWithPromise : public DecoderData {
676 public:
677 DecoderDataWithPromise(MediaFormatReader* aOwner, MediaData::Type aType,
678 uint32_t aNumOfMaxError)
679 : DecoderData(aOwner, aType, aNumOfMaxError), mHasPromise(false) {
680 DecoderDoctorLogger::LogConstructionAndBase(
681 "MediaFormatReader::DecoderDataWithPromise", this,
682 "MediaFormatReader::DecoderData",
683 static_cast<const MediaFormatReader::DecoderData*>(this));
684 }
685
686 ~DecoderDataWithPromise() {
687 DecoderDoctorLogger::LogDestruction(
688 "MediaFormatReader::DecoderDataWithPromise", this);
689 }
690
691 bool HasPromise() const override { return mHasPromise; }
692
693 RefPtr<DataPromise<Type>> EnsurePromise(StaticString aMethodName) {
694 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 694); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 694); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
695 mHasPromise = true;
696 return mPromise.Ensure(aMethodName);
697 }
698
699 void ResolvePromise(Type* aData, StaticString aMethodName) {
700 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 700); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 700); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
701 mPromise.Resolve(aData, aMethodName);
702 mHasPromise = false;
703 }
704
705 void RejectPromise(const MediaResult& aError,
706 StaticString aMethodName) override {
707 MOZ_ASSERT(mOwner->OnTaskQueue())do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mOwner->OnTaskQueue())>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mOwner->OnTaskQueue()))),
0))) { do { } while (false); MOZ_ReportAssertionFailure("mOwner->OnTaskQueue()"
, "/root/firefox-clang/dom/media/MediaFormatReader.h", 707); AnnotateMozCrashReason
("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()" ")"); do { MOZ_CrashSequence
(__null, 707); __attribute__((nomerge)) ::abort(); } while (false
); } } while (false);
708 mPromise.Reject(aError, aMethodName);
709 mHasPromise = false;
710 }
711
712 private:
713 MozPromiseHolder<DataPromise<Type>> mPromise;
714 Atomic<bool> mHasPromise;
715 };
716
717 // Decode task queue.
718 RefPtr<TaskQueue> mTaskQueue;
719
720 DecoderDataWithPromise<AudioData> mAudio;
721 DecoderDataWithPromise<VideoData> mVideo;
722
723 Watchable<bool> mWorkingInfoChanged;
724 WatchManager<MediaFormatReader> mWatchManager;
725 bool mIsWatchingWorkingInfo;
726
727 // Returns true when the decoder for this track needs input.
728 bool NeedInput(DecoderData& aDecoder);
729
730 DecoderData& GetDecoderData(TrackType aTrack);
731
732 // Demuxer objects.
733 class DemuxerProxy;
734 UniquePtr<DemuxerProxy> mDemuxer;
735 bool mDemuxerInitDone;
736 void OnDemuxerInitDone(const MediaResult& aResult);
737 void OnDemuxerInitFailed(const MediaResult& aError);
738 MozPromiseRequestHolder<MediaDataDemuxer::InitPromise> mDemuxerInitRequest;
739 MozPromiseRequestHolder<NotifyDataArrivedPromise> mNotifyDataArrivedPromise;
740 bool mPendingNotifyDataArrived;
741 void OnDemuxFailed(TrackType aTrack, const MediaResult& aError);
742
743 void DoDemuxVideo();
744 void OnVideoDemuxCompleted(
745 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
746 void OnVideoDemuxFailed(const MediaResult& aError) {
747 OnDemuxFailed(TrackType::kVideoTrack, aError);
748 }
749
750 void DoDemuxAudio();
751 void OnAudioDemuxCompleted(
752 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
753 void OnAudioDemuxFailed(const MediaResult& aError) {
754 OnDemuxFailed(TrackType::kAudioTrack, aError);
755 }
756
757 void SkipVideoDemuxToNextKeyFrame(media::TimeUnit aTimeThreshold);
758 MozPromiseRequestHolder<MediaTrackDemuxer::SkipAccessPointPromise>
759 mSkipRequest;
760 void VideoSkipReset(uint32_t aSkipped);
761 void OnVideoSkipCompleted(uint32_t aSkipped);
762 void OnVideoSkipFailed(MediaTrackDemuxer::SkipFailureHolder aFailure);
763
764 // The last number of decoded output frames that we've reported to
765 // MediaDecoder::NotifyDecoded(). We diff the number of output video
766 // frames every time that DecodeVideoData() is called, and report the
767 // delta there.
768 uint64_t mLastReportedNumDecodedFrames;
769
770 // Timestamp of the previous decoded video keyframe, in microseconds.
771 int64_t mPreviousDecodedKeyframeTime_us;
772 // Default mLastDecodedKeyframeTime_us value, must be bigger than anything.
773 static const int64_t sNoPreviousDecodedKeyframe = INT64_MAX(9223372036854775807L);
774
775 RefPtr<layers::KnowsCompositor> mKnowsCompositor;
776
777 // Metadata objects
778 // True if we've read the streams' metadata.
779 bool mInitDone;
780 MozPromiseHolder<MetadataPromise> mMetadataPromise;
781 bool IsEncrypted() const;
782
783 // Set to true if any of our track buffers may be blocking.
784 bool mTrackDemuxersMayBlock;
785
786 // Seeking objects.
787 void SetSeekTarget(const SeekTarget& aTarget);
788 bool IsSeeking() const { return mPendingSeekTime.isSome(); }
789 bool IsVideoOnlySeeking() const {
790 return IsSeeking() && mOriginalSeekTarget.IsVideoOnly();
791 }
792 bool IsAudioOnlySeeking() const {
793 return IsSeeking() && mOriginalSeekTarget.IsAudioOnly();
794 }
795 void ScheduleSeek();
796 void AttemptSeek();
797 void OnSeekFailed(TrackType aTrack, const MediaResult& aError);
798 void DoVideoSeek();
799 void OnVideoSeekCompleted(media::TimeUnit aTime);
800 void OnVideoSeekFailed(const MediaResult& aError);
801 bool mSeekScheduled;
802
803 void DoAudioSeek();
804 void OnAudioSeekCompleted(media::TimeUnit aTime);
805 void OnAudioSeekFailed(const MediaResult& aError);
806 // The SeekTarget that was last given to Seek()
807 SeekTarget mOriginalSeekTarget;
808 // Temporary seek information while we wait for the data
809 Maybe<media::TimeUnit> mFallbackSeekTime;
810 Maybe<media::TimeUnit> mPendingSeekTime;
811 MozPromiseHolder<SeekPromise> mSeekPromise;
812
813 RefPtr<VideoFrameContainer> mVideoFrameContainer;
814 layers::ImageContainer* GetImageContainer();
815
816 RefPtr<CDMProxy> mCDMProxy;
817
818 RefPtr<GMPCrashHelper> mCrashHelper;
819
820 void SetNullDecode(TrackType aTrack, bool aIsNullDecode);
821
822 class DecoderFactory;
823 UniquePtr<DecoderFactory> mDecoderFactory;
824
825 class ShutdownPromisePool;
826 UniquePtr<ShutdownPromisePool> mShutdownPromisePool;
827
828 MediaEventListener mOnTrackWaitingForKeyListener;
829
830 void OnFirstDemuxCompleted(
831 TrackInfo::TrackType aType,
832 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
833
834 void OnFirstDemuxFailed(TrackInfo::TrackType aType,
835 const MediaResult& aError);
836
837 void MaybeResolveMetadataPromise();
838
839 // Stores presentation info required for playback.
840 MediaInfo mInfo;
841
842 UniquePtr<MetadataTags> mTags;
843
844 // A flag indicating if the start time is known or not.
845 bool mHasStartTime = false;
846
847 void ShutdownDecoder(TrackType aTrack);
848 RefPtr<ShutdownPromise> TearDownDecoders();
849
850 bool mShutdown = false;
851
852 // Buffered range.
853 Canonical<media::TimeIntervals> mBuffered;
854
855 // Used to send TimedMetadata to the listener.
856 TimedMetadataEventProducer mTimedMetadataEvent;
857
858 // Notify if this media is not seekable.
859 MediaEventProducer<void> mOnMediaNotSeekable;
860
861 // Notify if we are waiting for a decryption key.
862 MediaEventProducer<TrackInfo::TrackType> mOnTrackWaitingForKey;
863
864 MediaEventProducer<nsTArray<uint8_t>, nsString> mOnEncrypted;
865
866 MediaEventProducer<void> mOnWaitingForKey;
867
868 MediaEventProducer<MediaResult> mOnDecodeWarning;
869
870 MediaEventProducer<VideoInfo, AudioInfo> mTrackInfoUpdatedEvent;
871
872 RefPtr<FrameStatistics> mFrameStats;
873
874 // Used in bug 1393399 for telemetry.
875 const MediaDecoderOwnerID mMediaDecoderOwnerID;
876
877 bool ResolveSetCDMPromiseIfDone(TrackType aTrack);
878 void PrepareToSetCDMForTrack(TrackType aTrack);
879 MozPromiseHolder<SetCDMPromise> mSetCDMPromise;
880 TrackSet mSetCDMForTracks{};
881 bool IsDecoderWaitingForCDM(TrackType aTrack);
882
883 void GetDebugInfo(dom::MediaFormatReaderDebugInfo& aInfo);
884
885 // Only be used on Windows when the media engine playback is enabled.
886 Maybe<uint64_t> mMediaEngineId;
887
888 const Maybe<TrackingId> mTrackingId;
889
890 // The start time of reading the metdata and how long does it take. This
891 // measurement includes the time of downloading media resource over the
892 // internet.
893 Maybe<TimeStamp> mReadMetadataStartTime;
894 TimeDuration mReadMetaDataTime;
895
896 // The total amount of time we have been waiting for the video data due to
897 // lacking of data.
898 TimeDuration mTotalWaitingForVideoDataTime;
899
900 // https://github.com/w3c/encrypted-media/issues/251#issuecomment-819783073
901 // Treat playback as encrypted if the media key is set before playback starts,
902 // this allows websites to start with non-encrypted stream and switch to
903 // encrypted stream later.
904 Atomic<bool> mEncryptedCustomIdent;
905};
906
907DDLoggedTypeCustomName(MediaFormatReader::DecoderData, DecoderData)template <> struct DDLoggedTypeTraits<MediaFormatReader
::DecoderData> { using Type = MediaFormatReader::DecoderData
; static constexpr const char* Name() { return "DecoderData";
} using HasBase = std::false_type; using BaseType = MediaFormatReader
::DecoderData; static constexpr const char* BaseTypeName() { return
""; } };
908
909} // namespace mozilla
910
911#endif