Bug Summary

File:var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h
Warning:line 363, 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

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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=/var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/html -fcoverage-compilation-dir=/var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/html -resource-dir /usr/lib/llvm-18/lib/clang/18 -include /var/lib/jenkins/workspace/firefox-scan-build/config/gcc_hidden.h -include /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/mozilla-config.h -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/system_wrappers -U _FORTIFY_SOURCE -D _FORTIFY_SOURCE=2 -D DEBUG=1 -D MOZ_HAS_MOZGLUE -D MOZILLA_INTERNAL_API -D IMPL_LIBXUL -D MOZ_SUPPORT_LEAKCHECKING -D STATIC_EXPORTABLE_JS_API -I /var/lib/jenkins/workspace/firefox-scan-build/dom/html -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dom/html -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I /var/lib/jenkins/workspace/firefox-scan-build/ipc/chromium/src -I /var/lib/jenkins/workspace/firefox-scan-build/caps -I /var/lib/jenkins/workspace/firefox-scan-build/docshell/base -I /var/lib/jenkins/workspace/firefox-scan-build/dom/base -I /var/lib/jenkins/workspace/firefox-scan-build/dom/canvas -I /var/lib/jenkins/workspace/firefox-scan-build/dom/html/input -I /var/lib/jenkins/workspace/firefox-scan-build/dom/media -I /var/lib/jenkins/workspace/firefox-scan-build/dom/security -I /var/lib/jenkins/workspace/firefox-scan-build/dom/xul -I /var/lib/jenkins/workspace/firefox-scan-build/image -I /var/lib/jenkins/workspace/firefox-scan-build/layout/forms -I /var/lib/jenkins/workspace/firefox-scan-build/layout/generic -I /var/lib/jenkins/workspace/firefox-scan-build/layout/style -I /var/lib/jenkins/workspace/firefox-scan-build/layout/tables -I /var/lib/jenkins/workspace/firefox-scan-build/layout/xul -I /var/lib/jenkins/workspace/firefox-scan-build/netwerk/base -I /var/lib/jenkins/workspace/firefox-scan-build/parser/htmlparser -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/include -I /var/lib/jenkins/workspace/firefox-scan-build/obj-x86_64-pc-linux-gnu/dist/include/nspr -I /var/lib/jenkins/workspace/firefox-scan-build/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-18/lib/clang/18/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=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 -stack-protector 2 -fstack-clash-protection -ftrivial-auto-var-init=pattern -fno-rtti -fgnuc-version=4.2.1 -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-2024-07-21-021012-413605-1 -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 protected:
143 // Recomputes mBuffered.
144 void UpdateBuffered();
145
146 public:
147 // Called by MDSM in dormant state to release resources allocated by this
148 // reader. The reader can resume decoding by calling Seek() to a specific
149 // position.
150 void ReleaseResources();
151
152 bool OnTaskQueue() const { return OwnerThread()->IsCurrentThreadIn(); }
153
154 // Resets all state related to decoding, emptying all buffers etc.
155 // Cancels all pending Request*Data() request callbacks, rejects any
156 // outstanding seek promises, and flushes the decode pipeline. The
157 // decoder must not call any of the callbacks for outstanding
158 // Request*Data() calls after this is called. Calls to Request*Data()
159 // made after this should be processed as usual.
160 //
161 // Normally this call preceedes a Seek() call, or shutdown.
162 //
163 // aParam is a set of TrackInfo::TrackType enums specifying which
164 // queues need to be reset, defaulting to both audio and video tracks.
165 nsresult ResetDecode(const TrackSet& aTracks);
166
167 // Destroys the decoding state. The reader cannot be made usable again.
168 // This is different from ReleaseMediaResources() as it is irreversable,
169 // whereas ReleaseMediaResources() is. Must be called on the decode
170 // thread.
171 RefPtr<ShutdownPromise> Shutdown();
172
173 // Returns true if this decoder reader uses hardware accelerated video
174 // decoding.
175 bool VideoIsHardwareAccelerated() const;
176
177 // By default, the state machine polls the reader once per second when it's
178 // in buffering mode. Some readers support a promise-based mechanism by which
179 // they notify the state machine when the data arrives.
180 bool IsWaitForDataSupported() const { return true; }
181
182 RefPtr<WaitForDataPromise> WaitForData(MediaData::Type aType);
183
184 // The MediaDecoderStateMachine uses various heuristics that assume that
185 // raw media data is arriving sequentially from a network channel. This
186 // makes sense in the <video src="foo"> case, but not for more advanced use
187 // cases like MSE.
188 bool UseBufferingHeuristics() const { return mTrackDemuxersMayBlock; }
189
190 RefPtr<SetCDMPromise> SetCDMProxy(CDMProxy* aProxy);
191
192 // Requests that the MediaFormatReader populates aInfo with debug information.
193 // This may be done asynchronously, and aInfo should *not* be accessed by the
194 // caller until the returned promise is resolved or rejected.
195 RefPtr<GenericPromise> RequestDebugInfo(
196 dom::MediaFormatReaderDebugInfo& aInfo);
197
198 Maybe<nsCString> GetAudioProcessPerCodec();
199
200 // Switch the video decoder to NullDecoderModule. It might takes effective
201 // since a few samples later depends on how much demuxed samples are already
202 // queued in the original video decoder.
203 void SetVideoNullDecode(bool aIsNullDecode);
204
205 void UpdateCompositor(already_AddRefed<layers::KnowsCompositor>);
206
207 void UpdateDuration(const media::TimeUnit& aDuration) {
208 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()",
"/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 208); AnnotateMozCrashReason("MOZ_ASSERT" "(" "OnTaskQueue()"
")"); do { *((volatile int*)__null) = 208; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
209 UpdateBuffered();
210 }
211
212 AbstractCanonical<media::TimeIntervals>* CanonicalBuffered() {
213 return &mBuffered;
214 }
215
216 TaskQueue* OwnerThread() const { return mTaskQueue; }
217
218 TimedMetadataEventSource& TimedMetadataEvent() { return mTimedMetadataEvent; }
219
220 // Notified by the OggDemuxer during playback when chained ogg is detected.
221 MediaEventSource<void>& OnMediaNotSeekable() { return mOnMediaNotSeekable; }
222
223 TimedMetadataEventProducer& TimedMetadataProducer() {
224 return mTimedMetadataEvent;
225 }
226
227 MediaEventProducer<void>& MediaNotSeekableProducer() {
228 return mOnMediaNotSeekable;
229 }
230
231 // Notified if the reader can't decode a sample due to a missing decryption
232 // key.
233 MediaEventSource<TrackInfo::TrackType>& OnTrackWaitingForKey() {
234 return mOnTrackWaitingForKey;
235 }
236
237 MediaEventProducer<TrackInfo::TrackType>& OnTrackWaitingForKeyProducer() {
238 return mOnTrackWaitingForKey;
239 }
240
241 MediaEventSource<nsTArray<uint8_t>, nsString>& OnEncrypted() {
242 return mOnEncrypted;
243 }
244
245 MediaEventSource<void>& OnWaitingForKey() { return mOnWaitingForKey; }
246
247 MediaEventSource<MediaResult>& OnDecodeWarning() { return mOnDecodeWarning; }
248
249 MediaEventSource<VideoInfo>& OnStoreDecoderBenchmark() {
250 return mOnStoreDecoderBenchmark;
251 }
252
253 MediaEventProducer<VideoInfo, AudioInfo>& OnTrackInfoUpdatedEvent() {
254 return mTrackInfoUpdatedEvent;
255 }
256
257 private:
258 bool HasVideo() const { return mVideo.mTrackDemuxer; }
259 bool HasAudio() const { return mAudio.mTrackDemuxer; }
260
261 bool IsWaitingOnCDMResource();
262
263 bool InitDemuxer();
264 // Notify the track demuxers that new data has been received.
265 void NotifyTrackDemuxers();
266 void ReturnOutput(MediaData* aData, TrackType aTrack);
267
268 // Enqueues a task to call Update(aTrack) on the decoder task queue.
269 // Lock for corresponding track must be held.
270 void ScheduleUpdate(TrackType aTrack);
271 void Update(TrackType aTrack);
272 // Handle actions should more data be received.
273 // Returns true if no more action is required.
274 bool UpdateReceivedNewData(TrackType aTrack);
275 // Called when new samples need to be demuxed.
276 void RequestDemuxSamples(TrackType aTrack);
277 // Handle demuxed samples by the input behavior.
278 void HandleDemuxedSamples(TrackType aTrack,
279 FrameStatistics::AutoNotifyDecoded& aA);
280 // Decode any pending already demuxed samples.
281 void DecodeDemuxedSamples(TrackType aTrack, MediaRawData* aSample);
282
283 struct InternalSeekTarget {
284 InternalSeekTarget(const media::TimeInterval& aTime, bool aDropTarget)
285 : mTime(aTime),
286 mDropTarget(aDropTarget),
287 mWaiting(false),
288 mHasSeeked(false) {}
289
290 media::TimeUnit Time() const { return mTime.mStart; }
291 media::TimeUnit EndTime() const { return mTime.mEnd; }
292 bool Contains(const media::TimeUnit& aTime) const {
293 return mTime.Contains(aTime);
294 }
295
296 media::TimeInterval mTime;
297 bool mDropTarget;
298 bool mWaiting;
299 bool mHasSeeked;
300 };
301
302 // Perform an internal seek to aTime. If aDropTarget is true then
303 // the first sample past the target will be dropped.
304 void InternalSeek(TrackType aTrack, const InternalSeekTarget& aTarget);
305 // Return the end time of the internal seek target if it exists. Otherwise,
306 // return infinity.
307 media::TimeUnit GetInternalSeekTargetEndTime() const;
308
309 // Drain the current decoder.
310 void DrainDecoder(TrackType aTrack);
311 void NotifyNewOutput(TrackType aTrack,
312 MediaDataDecoder::DecodedData&& aResults);
313 void NotifyError(TrackType aTrack, const MediaResult& aError);
314 void NotifyWaitingForData(TrackType aTrack);
315 void NotifyWaitingForKey(TrackType aTrack);
316 void NotifyEndOfStream(TrackType aTrack);
317
318 void ExtractCryptoInitData(nsTArray<uint8_t>& aInitData);
319
320 // Initializes mLayersBackendType if possible.
321 void InitLayersBackendType();
322
323 void Reset(TrackType aTrack);
324 void DropDecodedSamples(TrackType aTrack);
325
326 // Return a target timeunit which the reader should skip to, this would be
327 // either the timethreshold we pass, or the time of the next keyframe. Return
328 // nothing if we don't need to skip.
329 // @param aTimeThreshold
330 // The time that we expect the time of next video frame should be or go beyond
331 // @param aRequestNextVideoKeyFrame
332 // If true and the next keyframe's time is larger than aTimeThreshold, skip to
333 // the next keyframe time instead of aTimeThreshold.
334 Maybe<media::TimeUnit> ShouldSkip(media::TimeUnit aTimeThreshold,
335 bool aRequestNextVideoKeyFrame);
336
337 void SetVideoDecodeThreshold();
338
339 size_t SizeOfQueue(TrackType aTrack);
340
341 // Fire a new OnStoreDecoderBenchmark event that will create new
342 // storage of the decoder benchmark.
343 // This is called only on TaskQueue.
344 void NotifyDecoderBenchmarkStore();
345
346 void NotifyTrackInfoUpdated();
347
348 enum class DrainState {
349 None,
350 DrainRequested,
351 Draining,
352 PartialDrainPending,
353 DrainCompleted,
354 DrainAborted,
355 };
356
357 class SharedShutdownPromiseHolder : public MozPromiseHolder<ShutdownPromise> {
358 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" ")", "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 358); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) >= 0"
") (" "illegal refcnt" ")"); do { *((volatile int*)__null) =
358; __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" ")", "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 358); AnnotateMozCrashReason("MOZ_ASSERT" "(" "int32_t(mRefCnt) > 0"
") (" "dup release" ")"); do { *((volatile int*)__null) = 358
; __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:
359 private:
360 ~SharedShutdownPromiseHolder() = default;
361 };
362
363 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
364 DecoderData(MediaFormatReader* aOwner, MediaData::Type aType,
365 uint32_t aNumOfMaxError)
366 : mOwner(aOwner),
367 mType(aType),
368 mMutex("DecoderData"),
369 mDescription("uninitialized"),
370 mProcessName(""),
371 mCodecName(""),
372 mUpdateScheduled(false),
373 mDemuxEOS(false),
374 mWaitingForDataStartTime(Nothing()),
375 mWaitingForKey(false),
376 mReceivedNewData(false),
377 mFlushing(false),
378 mFlushed(true),
379 mDrainState(DrainState::None),
380 mNumOfConsecutiveDecodingError(0),
381 mMaxConsecutiveDecodingError(aNumOfMaxError),
382 mNumOfConsecutiveRDDOrGPUCrashes(0),
383 mMaxConsecutiveRDDOrGPUCrashes(
384 StaticPrefs::media_rdd_process_max_crashes()),
385 mNumOfConsecutiveUtilityCrashes(0),
386 mMaxConsecutiveUtilityCrashes(
387 StaticPrefs::media_utility_process_max_crashes()),
388 mFirstFrameTime(Some(media::TimeUnit::Zero())),
389 mNumSamplesInput(0),
390 mNumSamplesOutput(0),
391 mNumSamplesOutputTotal(0),
392 mNumSamplesSkippedTotal(0),
393 mSizeOfQueue(0),
394 mIsHardwareAccelerated(false),
395 mLastStreamSourceID(UINT32_MAX(4294967295U)),
396 mIsNullDecode(false),
397 mHardwareDecodingDisabled(false) {
398 DecoderDoctorLogger::LogConstruction("MediaFormatReader::DecoderData",
399 this);
400 }
401
402 ~DecoderData() {
403 DecoderDoctorLogger::LogDestruction("MediaFormatReader::DecoderData",
404 this);
405 }
406
407 MediaFormatReader* mOwner;
408 // Disambiguate Audio vs Video.
409 MediaData::Type mType;
410 RefPtr<MediaTrackDemuxer> mTrackDemuxer;
411 // TaskQueue on which decoder can choose to decode.
412 // Only non-null up until the decoder is created.
413 RefPtr<TaskQueue> mTaskQueue;
414
415 // Mutex protecting mDescription, mDecoder, mTrackDemuxer, mWorkingInfo,
416 // mProcessName and mCodecName as those can be read outside the TaskQueue.
417 // They are only written on the TaskQueue however, as such mMutex doesn't
418 // need to be held when those members are read on the TaskQueue.
419 Mutex mMutex MOZ_UNANNOTATED;
420 // The platform decoder.
421 RefPtr<MediaDataDecoder> mDecoder;
422 nsCString mDescription;
423 nsCString mProcessName;
424 nsCString mCodecName;
425 void ShutdownDecoder();
426
427 // Only accessed from reader's task queue.
428 bool mUpdateScheduled;
429 bool mDemuxEOS;
430 Maybe<TimeStamp> mWaitingForDataStartTime;
431 bool mWaitingForKey;
432 bool mReceivedNewData;
433 UniquePtr<PerformanceRecorderMulti<PlaybackStage>> mDecodePerfRecorder;
434
435 // Pending seek.
436 MozPromiseRequestHolder<MediaTrackDemuxer::SeekPromise> mSeekRequest;
437
438 // Queued demux samples waiting to be decoded.
439 nsTArray<RefPtr<MediaRawData>> mQueuedSamples;
440 MozPromiseRequestHolder<MediaTrackDemuxer::SamplesPromise> mDemuxRequest;
441 // A WaitingPromise is pending if the demuxer is waiting for data or
442 // if the decoder is waiting for a key.
443 MozPromiseHolder<WaitForDataPromise> mWaitingPromise;
444 bool HasWaitingPromise() const {
445 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 445); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 445; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
446 return !mWaitingPromise.IsEmpty();
447 }
448
449 bool IsWaitingForData() const {
450 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 450); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 450; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
451 return !!mWaitingForDataStartTime;
452 }
453
454 bool IsWaitingForKey() const {
455 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 455); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 455; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
456 return mWaitingForKey && mDecodeRequest.Exists();
457 }
458
459 // MediaDataDecoder handler's variables.
460 MozPromiseRequestHolder<MediaDataDecoder::DecodePromise> mDecodeRequest;
461 bool mFlushing; // True if flush is in action.
462 // Set to true if the last operation run on the decoder was a flush.
463 bool mFlushed;
464 RefPtr<SharedShutdownPromiseHolder> mShutdownPromise;
465
466 MozPromiseRequestHolder<MediaDataDecoder::DecodePromise> mDrainRequest;
467 DrainState mDrainState;
468 bool HasPendingDrain() const { return mDrainState != DrainState::None; }
469 bool HasCompletedDrain() const {
470 return mDrainState == DrainState::DrainCompleted ||
471 mDrainState == DrainState::DrainAborted;
472 }
473 void RequestDrain() {
474 MOZ_RELEASE_ASSERT(mDrainState == DrainState::None)do { static_assert( mozilla::detail::AssertionConditionType<
decltype(mDrainState == DrainState::None)>::isValid, "invalid assertion condition"
); if ((__builtin_expect(!!(!(!!(mDrainState == DrainState::None
))), 0))) { do { } while (false); MOZ_ReportAssertionFailure(
"mDrainState == DrainState::None", "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 474); AnnotateMozCrashReason("MOZ_RELEASE_ASSERT" "(" "mDrainState == DrainState::None"
")"); do { *((volatile int*)__null) = 474; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
475 mDrainState = DrainState::DrainRequested;
476 }
477
478 void StartRecordDecodingPerf(const TrackType aTrack,
479 const MediaRawData* aSample);
480
481 // Track decoding error and fail when we hit the limit.
482 uint32_t mNumOfConsecutiveDecodingError;
483 uint32_t mMaxConsecutiveDecodingError;
484
485 // Track RDD or GPU process crashes and fail when we hit the limit.
486 uint32_t mNumOfConsecutiveRDDOrGPUCrashes;
487 uint32_t mMaxConsecutiveRDDOrGPUCrashes;
488
489 // Track Utility process crashes and fail when we hit the limit.
490 uint32_t mNumOfConsecutiveUtilityCrashes;
491 uint32_t mMaxConsecutiveUtilityCrashes;
492
493 // Set when we haven't yet decoded the first frame.
494 // Cleared once the first frame has been decoded.
495 // This is used to determine, upon error, if we should try again to decode
496 // the frame, or skip to the next keyframe.
497 Maybe<media::TimeUnit> mFirstFrameTime;
498
499 Maybe<MediaResult> mError;
500 bool HasFatalError() const {
501 if (!mError.isSome()) {
502 return false;
503 }
504 if (mError.ref() == NS_ERROR_DOM_MEDIA_DECODE_ERR) {
505 // Allow decode errors to be non-fatal, but give up
506 // if we have too many, or if warnings should be treated as errors.
507 return mNumOfConsecutiveDecodingError > mMaxConsecutiveDecodingError ||
508 StaticPrefs::media_playback_warnings_as_errors();
509 }
510 if (mError.ref() == NS_ERROR_DOM_MEDIA_NEED_NEW_DECODER) {
511 // If the caller asked for a new decoder we shouldn't treat
512 // it as fatal.
513 return false;
514 }
515 if (mError.ref() ==
516 NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_RDD_OR_GPU_ERR) {
517 // Allow RDD crashes to be non-fatal, but give up
518 // if we have too many, or if warnings should be treated as errors.
519 return mNumOfConsecutiveRDDOrGPUCrashes >
520 mMaxConsecutiveRDDOrGPUCrashes ||
521 StaticPrefs::media_playback_warnings_as_errors();
522 }
523 if (mError.ref() ==
524 NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_UTILITY_ERR) {
525 bool tooManyConsecutiveCrashes =
526 mNumOfConsecutiveUtilityCrashes > mMaxConsecutiveUtilityCrashes;
527 // TODO: Telemetry?
528 return tooManyConsecutiveCrashes ||
529 StaticPrefs::media_playback_warnings_as_errors();
530 }
531 if (mError.ref() ==
532 NS_ERROR_DOM_MEDIA_REMOTE_DECODER_CRASHED_MF_CDM_ERR) {
533 return false;
534 }
535 // All other error types are fatal
536 return true;
537 }
538
539 // If set, all decoded samples prior mTimeThreshold will be dropped.
540 // Used for internal seeking when a change of stream is detected or when
541 // encountering data discontinuity.
542 Maybe<InternalSeekTarget> mTimeThreshold;
543 // Time of last decoded sample returned.
544 Maybe<media::TimeInterval> mLastDecodedSampleTime;
545
546 // Decoded samples returned my mDecoder awaiting being returned to
547 // state machine upon request.
548 nsTArray<RefPtr<MediaData>> mOutput;
549 uint64_t mNumSamplesInput;
550 uint64_t mNumSamplesOutput;
551 uint64_t mNumSamplesOutputTotal;
552 uint64_t mNumSamplesSkippedTotal;
553
554 // These get overridden in the templated concrete class.
555 // Indicate if we have a pending promise for decoded frame.
556 // Rejecting the promise will stop the reader from decoding ahead.
557 virtual bool HasPromise() const = 0;
558 virtual void RejectPromise(const MediaResult& aError,
559 StaticString aMethodName) = 0;
560
561 // Clear track demuxer related data.
562 void ResetDemuxer() {
563 mDemuxRequest.DisconnectIfExists();
564 mSeekRequest.DisconnectIfExists();
565 mTrackDemuxer->Reset();
566 mQueuedSamples.Clear();
567 }
568
569 // Flush the decoder if present and reset decoding related data.
570 // Following a flush, the decoder is ready to accept any new data.
571 void Flush();
572
573 bool CancelWaitingForKey() {
574 if (!mWaitingForKey) {
575 return false;
576 }
577 mWaitingForKey = false;
578 if (IsWaitingForData() || !HasWaitingPromise()) {
579 return false;
580 }
581 mWaitingPromise.Resolve(mType, __func__);
582 return true;
583 }
584
585 // Reset the state of the DecoderData, clearing all queued frames
586 // (pending demuxed and decoded).
587 // The track demuxer is *not* reset.
588 void ResetState() {
589 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 589); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 589; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
590 mDemuxEOS = false;
591 mWaitingForDataStartTime.reset();
592 mQueuedSamples.Clear();
593 mDecodeRequest.DisconnectIfExists();
594 mDrainRequest.DisconnectIfExists();
595 mDrainState = DrainState::None;
596 CancelWaitingForKey();
597 mTimeThreshold.reset();
598 mLastDecodedSampleTime.reset();
599 mOutput.Clear();
600 mNumSamplesInput = 0;
601 mNumSamplesOutput = 0;
602 mSizeOfQueue = 0;
603 mNextStreamSourceID.reset();
604 if (!HasFatalError()) {
605 mError.reset();
606 }
607 }
608
609 bool HasInternalSeekPending() const {
610 return mTimeThreshold && !mTimeThreshold.ref().mHasSeeked;
611 }
612
613 // Return the current TrackInfo in the stream. If the stream content never
614 // changed since AsyncReadMetadata was called then the TrackInfo used is
615 // mOriginalInfo, other it will be mInfo. The later case is only ever true
616 // with MSE or the WebMDemuxer.
617 const TrackInfo* GetCurrentInfo() const {
618 if (mInfo) {
619 return *mInfo;
620 }
621 return mOriginalInfo.get();
622 }
623 // Return the current TrackInfo updated as per the decoder output.
624 // Typically for audio, the number of channels and/or sampling rate can vary
625 // between what was found in the metadata and what the decoder returned.
626 const TrackInfo* GetWorkingInfo() const { return mWorkingInfo.get(); }
627 bool IsEncrypted() const { return GetCurrentInfo()->mCrypto.IsEncrypted(); }
628
629 // Used by the MDSM for logging purposes.
630 Atomic<size_t> mSizeOfQueue;
631 // Used by the MDSM to determine if video decoding is hardware accelerated.
632 // This value is updated after a frame is successfully decoded.
633 Atomic<bool> mIsHardwareAccelerated;
634 // Sample format monitoring.
635 uint32_t mLastStreamSourceID;
636 Maybe<uint32_t> mNextStreamSourceID;
637 media::TimeIntervals mTimeRanges;
638 Maybe<media::TimeUnit> mLastTimeRangesEnd;
639 // TrackInfo as first discovered during ReadMetadata.
640 UniquePtr<TrackInfo> mOriginalInfo;
641 // Written exclusively on the TaskQueue, can be read on MDSM's TaskQueue.
642 // Must be read with parent's mutex held.
643 UniquePtr<TrackInfo> mWorkingInfo;
644 RefPtr<TrackInfoSharedPtr> mInfo;
645 Maybe<media::TimeUnit> mFirstDemuxedSampleTime;
646 // Use NullDecoderModule or not.
647 bool mIsNullDecode;
648 bool mHardwareDecodingDisabled;
649 // Whether we have reported hardware decoding support for video. Used only
650 // on reader's task queue,
651 bool mHasReportedVideoHardwareSupportTelemtry = false;
652
653 class {
654 public:
655 float Mean() const { return mMean; }
656
657 void Update(const media::TimeUnit& aValue) {
658 if (aValue == media::TimeUnit::Zero()) {
659 return;
660 }
661 mMean += static_cast<float>((1.0f / aValue.ToSeconds() - mMean) /
662 static_cast<double>(++mCount));
663 }
664
665 void Reset() {
666 mMean = 0;
667 mCount = 0;
668 }
669
670 private:
671 float mMean = 0;
672 uint64_t mCount = 0;
673 } mMeanRate;
674 };
675
676 template <typename Type>
677 class DecoderDataWithPromise : public DecoderData {
678 public:
679 DecoderDataWithPromise(MediaFormatReader* aOwner, MediaData::Type aType,
680 uint32_t aNumOfMaxError)
681 : DecoderData(aOwner, aType, aNumOfMaxError), mHasPromise(false) {
682 DecoderDoctorLogger::LogConstructionAndBase(
683 "MediaFormatReader::DecoderDataWithPromise", this,
684 "MediaFormatReader::DecoderData",
685 static_cast<const MediaFormatReader::DecoderData*>(this));
686 }
687
688 ~DecoderDataWithPromise() {
689 DecoderDoctorLogger::LogDestruction(
690 "MediaFormatReader::DecoderDataWithPromise", this);
691 }
692
693 bool HasPromise() const override { return mHasPromise; }
694
695 RefPtr<DataPromise<Type>> EnsurePromise(StaticString aMethodName) {
696 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 696); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 696; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
697 mHasPromise = true;
698 return mPromise.Ensure(aMethodName);
699 }
700
701 void ResolvePromise(Type* aData, StaticString aMethodName) {
702 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 702); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 702; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
703 mPromise.Resolve(aData, aMethodName);
704 mHasPromise = false;
705 }
706
707 void RejectPromise(const MediaResult& aError,
708 StaticString aMethodName) override {
709 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()"
, "/var/lib/jenkins/workspace/firefox-scan-build/dom/media/MediaFormatReader.h"
, 709); AnnotateMozCrashReason("MOZ_ASSERT" "(" "mOwner->OnTaskQueue()"
")"); do { *((volatile int*)__null) = 709; __attribute__((nomerge
)) ::abort(); } while (false); } } while (false);
710 mPromise.Reject(aError, aMethodName);
711 mHasPromise = false;
712 }
713
714 private:
715 MozPromiseHolder<DataPromise<Type>> mPromise;
716 Atomic<bool> mHasPromise;
717 };
718
719 // Decode task queue.
720 RefPtr<TaskQueue> mTaskQueue;
721
722 DecoderDataWithPromise<AudioData> mAudio;
723 DecoderDataWithPromise<VideoData> mVideo;
724
725 Watchable<bool> mWorkingInfoChanged;
726 WatchManager<MediaFormatReader> mWatchManager;
727 bool mIsWatchingWorkingInfo;
728
729 // Returns true when the decoder for this track needs input.
730 bool NeedInput(DecoderData& aDecoder);
731
732 DecoderData& GetDecoderData(TrackType aTrack);
733
734 // Demuxer objects.
735 class DemuxerProxy;
736 UniquePtr<DemuxerProxy> mDemuxer;
737 bool mDemuxerInitDone;
738 void OnDemuxerInitDone(const MediaResult& aResult);
739 void OnDemuxerInitFailed(const MediaResult& aError);
740 MozPromiseRequestHolder<MediaDataDemuxer::InitPromise> mDemuxerInitRequest;
741 MozPromiseRequestHolder<NotifyDataArrivedPromise> mNotifyDataArrivedPromise;
742 bool mPendingNotifyDataArrived;
743 void OnDemuxFailed(TrackType aTrack, const MediaResult& aError);
744
745 void DoDemuxVideo();
746 void OnVideoDemuxCompleted(
747 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
748 void OnVideoDemuxFailed(const MediaResult& aError) {
749 OnDemuxFailed(TrackType::kVideoTrack, aError);
750 }
751
752 void DoDemuxAudio();
753 void OnAudioDemuxCompleted(
754 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
755 void OnAudioDemuxFailed(const MediaResult& aError) {
756 OnDemuxFailed(TrackType::kAudioTrack, aError);
757 }
758
759 void SkipVideoDemuxToNextKeyFrame(media::TimeUnit aTimeThreshold);
760 MozPromiseRequestHolder<MediaTrackDemuxer::SkipAccessPointPromise>
761 mSkipRequest;
762 void VideoSkipReset(uint32_t aSkipped);
763 void OnVideoSkipCompleted(uint32_t aSkipped);
764 void OnVideoSkipFailed(MediaTrackDemuxer::SkipFailureHolder aFailure);
765
766 // The last number of decoded output frames that we've reported to
767 // MediaDecoder::NotifyDecoded(). We diff the number of output video
768 // frames every time that DecodeVideoData() is called, and report the
769 // delta there.
770 uint64_t mLastReportedNumDecodedFrames;
771
772 // Timestamp of the previous decoded keyframe, in microseconds.
773 int64_t mPreviousDecodedKeyframeTime_us;
774 // Default mLastDecodedKeyframeTime_us value, must be bigger than anything.
775 static const int64_t sNoPreviousDecodedKeyframe = INT64_MAX(9223372036854775807L);
776
777 RefPtr<layers::KnowsCompositor> mKnowsCompositor;
778
779 // Metadata objects
780 // True if we've read the streams' metadata.
781 bool mInitDone;
782 MozPromiseHolder<MetadataPromise> mMetadataPromise;
783 bool IsEncrypted() const;
784
785 // Set to true if any of our track buffers may be blocking.
786 bool mTrackDemuxersMayBlock;
787
788 // Seeking objects.
789 void SetSeekTarget(const SeekTarget& aTarget);
790 bool IsSeeking() const { return mPendingSeekTime.isSome(); }
791 bool IsVideoOnlySeeking() const {
792 return IsSeeking() && mOriginalSeekTarget.IsVideoOnly();
793 }
794 bool IsAudioOnlySeeking() const {
795 return IsSeeking() && mOriginalSeekTarget.IsAudioOnly();
796 }
797 void ScheduleSeek();
798 void AttemptSeek();
799 void OnSeekFailed(TrackType aTrack, const MediaResult& aError);
800 void DoVideoSeek();
801 void OnVideoSeekCompleted(media::TimeUnit aTime);
802 void OnVideoSeekFailed(const MediaResult& aError);
803 bool mSeekScheduled;
804
805 void DoAudioSeek();
806 void OnAudioSeekCompleted(media::TimeUnit aTime);
807 void OnAudioSeekFailed(const MediaResult& aError);
808 // The SeekTarget that was last given to Seek()
809 SeekTarget mOriginalSeekTarget;
810 // Temporary seek information while we wait for the data
811 Maybe<media::TimeUnit> mFallbackSeekTime;
812 Maybe<media::TimeUnit> mPendingSeekTime;
813 MozPromiseHolder<SeekPromise> mSeekPromise;
814
815 RefPtr<VideoFrameContainer> mVideoFrameContainer;
816 layers::ImageContainer* GetImageContainer();
817
818 RefPtr<CDMProxy> mCDMProxy;
819
820 RefPtr<GMPCrashHelper> mCrashHelper;
821
822 void SetNullDecode(TrackType aTrack, bool aIsNullDecode);
823
824 class DecoderFactory;
825 UniquePtr<DecoderFactory> mDecoderFactory;
826
827 class ShutdownPromisePool;
828 UniquePtr<ShutdownPromisePool> mShutdownPromisePool;
829
830 MediaEventListener mOnTrackWaitingForKeyListener;
831
832 void OnFirstDemuxCompleted(
833 TrackInfo::TrackType aType,
834 const RefPtr<MediaTrackDemuxer::SamplesHolder>& aSamples);
835
836 void OnFirstDemuxFailed(TrackInfo::TrackType aType,
837 const MediaResult& aError);
838
839 void MaybeResolveMetadataPromise();
840
841 // Stores presentation info required for playback.
842 MediaInfo mInfo;
843
844 UniquePtr<MetadataTags> mTags;
845
846 // A flag indicating if the start time is known or not.
847 bool mHasStartTime = false;
848
849 void ShutdownDecoder(TrackType aTrack);
850 RefPtr<ShutdownPromise> TearDownDecoders();
851
852 bool mShutdown = false;
853
854 // Buffered range.
855 Canonical<media::TimeIntervals> mBuffered;
856
857 // Used to send TimedMetadata to the listener.
858 TimedMetadataEventProducer mTimedMetadataEvent;
859
860 // Notify if this media is not seekable.
861 MediaEventProducer<void> mOnMediaNotSeekable;
862
863 // Notify if we are waiting for a decryption key.
864 MediaEventProducer<TrackInfo::TrackType> mOnTrackWaitingForKey;
865
866 MediaEventProducer<nsTArray<uint8_t>, nsString> mOnEncrypted;
867
868 MediaEventProducer<void> mOnWaitingForKey;
869
870 MediaEventProducer<MediaResult> mOnDecodeWarning;
871
872 MediaEventProducer<VideoInfo> mOnStoreDecoderBenchmark;
873
874 MediaEventProducer<VideoInfo, AudioInfo> mTrackInfoUpdatedEvent;
875
876 RefPtr<FrameStatistics> mFrameStats;
877
878 // Used in bug 1393399 for telemetry.
879 const MediaDecoderOwnerID mMediaDecoderOwnerID;
880
881 bool ResolveSetCDMPromiseIfDone(TrackType aTrack);
882 void PrepareToSetCDMForTrack(TrackType aTrack);
883 MozPromiseHolder<SetCDMPromise> mSetCDMPromise;
884 TrackSet mSetCDMForTracks{};
885 bool IsDecoderWaitingForCDM(TrackType aTrack);
886
887 void GetDebugInfo(dom::MediaFormatReaderDebugInfo& aInfo);
888
889 // Only be used on Windows when the media engine playback is enabled.
890 Maybe<uint64_t> mMediaEngineId;
891
892 const Maybe<TrackingId> mTrackingId;
893
894 // The start time of reading the metdata and how long does it take. This
895 // measurement includes the time of downloading media resource over the
896 // internet.
897 Maybe<TimeStamp> mReadMetadataStartTime;
898 TimeDuration mReadMetaDataTime;
899
900 // The total amount of time we have been waiting for the video data due to
901 // lacking of data.
902 TimeDuration mTotalWaitingForVideoDataTime;
903};
904
905} // namespace mozilla
906
907#endif