summaryrefslogtreecommitdiffstats
path: root/dom/media/mediasource/SourceBuffer.h
blob: 243c34284f5029fac921747bae2b0e4d65a2ef23 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_SourceBuffer_h_
#define mozilla_dom_SourceBuffer_h_

#include "mozilla/MozPromise.h"
#include "MediaContainerType.h"
#include "MediaSource.h"
#include "js/RootingAPI.h"
#include "mozilla/Assertions.h"
#include "mozilla/Atomics.h"
#include "mozilla/Attributes.h"
#include "mozilla/DOMEventTargetHelper.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/dom/SourceBufferBinding.h"
#include "mozilla/dom/TypedArray.h"
#include "mozilla/mozalloc.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionNoteChild.h"
#include "nsCycleCollectionParticipant.h"
#include "nsISupports.h"
#include "nscore.h"
#include "TrackBuffersManager.h"
#include "SourceBufferTask.h"

class JSObject;
struct JSContext;

namespace mozilla {

class AbstractThread;
class ErrorResult;
class MediaByteBuffer;
template <typename T>
class AsyncEventRunner;

DDLoggedTypeName(dom::SourceBuffer);

namespace dom {

class TimeRanges;

class SourceBuffer final : public DOMEventTargetHelper,
                           public DecoderDoctorLifeLogger<SourceBuffer> {
 public:
  /** WebIDL Methods. */
  SourceBufferAppendMode Mode() const {
    return mCurrentAttributes.GetAppendMode();
  }

  void SetMode(SourceBufferAppendMode aMode, ErrorResult& aRv);

  bool Updating() const { return mUpdating; }

  TimeRanges* GetBuffered(ErrorResult& aRv);
  media::TimeIntervals GetTimeIntervals();

  double TimestampOffset() const {
    return mCurrentAttributes.GetApparentTimestampOffset();
  }

  void SetTimestampOffset(double aTimestampOffset, ErrorResult& aRv);

  double AppendWindowStart() const {
    return mCurrentAttributes.GetAppendWindowStart();
  }

  void SetAppendWindowStart(double aAppendWindowStart, ErrorResult& aRv);

  double AppendWindowEnd() const {
    return mCurrentAttributes.GetAppendWindowEnd();
  }

  void SetAppendWindowEnd(double aAppendWindowEnd, ErrorResult& aRv);

  void AppendBuffer(const ArrayBuffer& aData, ErrorResult& aRv);
  void AppendBuffer(const ArrayBufferView& aData, ErrorResult& aRv);

  already_AddRefed<Promise> AppendBufferAsync(const ArrayBuffer& aData,
                                              ErrorResult& aRv);
  already_AddRefed<Promise> AppendBufferAsync(const ArrayBufferView& aData,
                                              ErrorResult& aRv);

  void Abort(ErrorResult& aRv);
  void AbortBufferAppend();

  void Remove(double aStart, double aEnd, ErrorResult& aRv);

  already_AddRefed<Promise> RemoveAsync(double aStart, double aEnd,
                                        ErrorResult& aRv);

  void ChangeType(const nsAString& aType, ErrorResult& aRv);

  IMPL_EVENT_HANDLER(updatestart);
  IMPL_EVENT_HANDLER(update);
  IMPL_EVENT_HANDLER(updateend);
  IMPL_EVENT_HANDLER(error);
  IMPL_EVENT_HANDLER(abort);

  /** End WebIDL Methods. */

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(SourceBuffer, DOMEventTargetHelper)

  SourceBuffer(MediaSource* aMediaSource, const MediaContainerType& aType);

  MediaSource* GetParentObject() const;

  JSObject* WrapObject(JSContext* aCx,
                       JS::Handle<JSObject*> aGivenProto) override;

  // Notify the SourceBuffer that it has been detached from the
  // MediaSource's sourceBuffer list.
  void Detach();
  bool IsAttached() const { return mMediaSource != nullptr; }

  void Ended();

  media::TimeIntervals GetBufferedIntervals();
  media::TimeUnit GetBufferedEnd();
  media::TimeUnit HighestStartTime();
  media::TimeUnit HighestEndTime();

  // Runs the range removal algorithm as defined by the MSE spec.
  void RangeRemoval(double aStart, double aEnd);

  bool IsActive() const { return mActive; }

 private:
  ~SourceBuffer();

  friend class AsyncEventRunner<SourceBuffer>;
  friend class BufferAppendRunnable;
  friend class mozilla::TrackBuffersManager;
  void DispatchSimpleEvent(const char* aName);
  void QueueAsyncSimpleEvent(const char* aName);

  // Update mUpdating and fire the appropriate events.
  void StartUpdating();
  void StopUpdating();
  void AbortUpdating();
  void ResetParserState();

  // If the media segment contains data beyond the current duration,
  // then run the duration change algorithm with new duration set to the
  // maximum of the current duration and the group end timestamp.
  void CheckEndTime();

  // Shared implementation of AppendBuffer overloads.
  void AppendData(RefPtr<MediaByteBuffer>&& aData, ErrorResult& aRv);
  // Shared implementation of AppendBufferAsync overloads.
  already_AddRefed<Promise> AppendDataAsync(RefPtr<MediaByteBuffer>&& aData,
                                            ErrorResult& aRv);

  void PrepareRemove(double aStart, double aEnd, ErrorResult& aRv);

  // Implement the "Append Error Algorithm".
  // Will call endOfStream() with "decode" error if aDecodeError is true.
  // 3.5.3 Append Error Algorithm
  // http://w3c.github.io/media-source/#sourcebuffer-append-error
  void AppendError(const MediaResult& aDecodeError);

  // Implements the "Prepare Append Algorithm". Returns MediaByteBuffer object
  // on success or nullptr (with aRv set) on error.
  already_AddRefed<MediaByteBuffer> PrepareAppend(const uint8_t* aData,
                                                  uint32_t aLength,
                                                  ErrorResult& aRv);
  template <typename T>
  already_AddRefed<MediaByteBuffer> PrepareAppend(const T& aData,
                                                  ErrorResult& aRv);

  void AppendDataCompletedWithSuccess(
      const SourceBufferTask::AppendBufferResult& aResult);
  void AppendDataErrored(const MediaResult& aError);

  RefPtr<MediaSource> mMediaSource;
  const RefPtr<AbstractThread> mAbstractMainThread;

  RefPtr<TrackBuffersManager> mTrackBuffersManager;
  SourceBufferAttributes mCurrentAttributes;

  bool mUpdating;

  mozilla::Atomic<bool> mActive;

  MozPromiseRequestHolder<SourceBufferTask::AppendPromise> mPendingAppend;
  MozPromiseRequestHolder<SourceBufferTask::RangeRemovalPromise>
      mPendingRemoval;
  MediaContainerType mType;

  RefPtr<TimeRanges> mBuffered;

  MozPromiseRequestHolder<MediaSource::ActiveCompletionPromise>
      mCompletionPromise;

  // Only used if MSE v2 experimental mode is active.
  // Contains the current Promise to be resolved following use of
  // appendBufferAsync and removeAsync. Not set of no operation is pending.
  RefPtr<Promise> mDOMPromise;
};

}  // namespace dom

}  // namespace mozilla

#endif /* mozilla_dom_SourceBuffer_h_ */