The Tor Browser / file comparison
comparison: content/media/MediaMetadataManager.h
content/media/MediaMetadataManager.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
equal
deleted
inserted
replaced
| -1:000000000000 | 0:25a59e6b9abc |
|---|---|
| 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(MediaMetadataManager_h__) | |
| 8 #define MediaMetadataManager_h__ | |
| 9 #include "VideoUtils.h" | |
| 10 #include "mozilla/LinkedList.h" | |
| 11 #include "AbstractMediaDecoder.h" | |
| 12 #include "nsAutoPtr.h" | |
| 13 | |
| 14 namespace mozilla { | |
| 15 | |
| 16 // A struct that contains the metadata of a media, and the time at which those | |
| 17 // metadata should start to be reported. | |
| 18 class TimedMetadata : public LinkedListElement<TimedMetadata> { | |
| 19 public: | |
| 20 // The time, in microseconds, at which those metadata should be available. | |
| 21 int64_t mPublishTime; | |
| 22 // The metadata. The ownership is transfered to the element when dispatching to | |
| 23 // the main threads. | |
| 24 nsAutoPtr<MetadataTags> mTags; | |
| 25 // The sample rate of this media. | |
| 26 int mRate; | |
| 27 // The number of channel of this media. | |
| 28 int mChannels; | |
| 29 // True if this media has an audio track. | |
| 30 bool mHasAudio; | |
| 31 // True if this media has a video track. | |
| 32 bool mHasVideo; | |
| 33 }; | |
| 34 | |
| 35 // This class encapsulate the logic to give the metadata from the reader to | |
| 36 // the content, at the right time. | |
| 37 class MediaMetadataManager | |
| 38 { | |
| 39 public: | |
| 40 ~MediaMetadataManager() { | |
| 41 TimedMetadata* element; | |
| 42 while((element = mMetadataQueue.popFirst()) != nullptr) { | |
| 43 delete element; | |
| 44 } | |
| 45 } | |
| 46 void QueueMetadata(TimedMetadata* aMetadata) { | |
| 47 mMetadataQueue.insertBack(aMetadata); | |
| 48 } | |
| 49 | |
| 50 void DispatchMetadataIfNeeded(AbstractMediaDecoder* aDecoder, double aCurrentTime) { | |
| 51 TimedMetadata* metadata = mMetadataQueue.getFirst(); | |
| 52 while (metadata && aCurrentTime >= static_cast<double>(metadata->mPublishTime) / USECS_PER_S) { | |
| 53 nsCOMPtr<nsIRunnable> metadataUpdatedEvent = | |
| 54 new AudioMetadataEventRunner(aDecoder, | |
| 55 metadata->mChannels, | |
| 56 metadata->mRate, | |
| 57 metadata->mHasAudio, | |
| 58 metadata->mHasVideo, | |
| 59 metadata->mTags.forget()); | |
| 60 NS_DispatchToMainThread(metadataUpdatedEvent, NS_DISPATCH_NORMAL); | |
| 61 delete mMetadataQueue.popFirst(); | |
| 62 metadata = mMetadataQueue.getFirst(); | |
| 63 } | |
| 64 } | |
| 65 protected: | |
| 66 LinkedList<TimedMetadata> mMetadataQueue; | |
| 67 }; | |
| 68 } | |
| 69 | |
| 70 #endif |
