content/media/mediasource/SubBufferDecoder.h@97036ab72558 (annotated)
content/media/mediasource/SubBufferDecoder.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=8 sts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #ifndef MOZILLA_SUBBUFFERDECODER_H_ |
| michael@0 | 8 | #define MOZILLA_SUBBUFFERDECODER_H_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "BufferDecoder.h" |
| michael@0 | 11 | #include "SourceBufferResource.h" |
| michael@0 | 12 | |
| michael@0 | 13 | namespace mozilla { |
| michael@0 | 14 | |
| michael@0 | 15 | class MediaSourceDecoder; |
| michael@0 | 16 | |
| michael@0 | 17 | class SubBufferDecoder : public BufferDecoder |
| michael@0 | 18 | { |
| michael@0 | 19 | public: |
| michael@0 | 20 | // This class holds a weak pointer to MediaResource. It's the responsibility |
| michael@0 | 21 | // of the caller to manage the memory of the MediaResource object. |
| michael@0 | 22 | SubBufferDecoder(MediaResource* aResource, MediaSourceDecoder* aParentDecoder) |
| michael@0 | 23 | : BufferDecoder(aResource), mParentDecoder(aParentDecoder), mReader(nullptr) |
| michael@0 | 24 | { |
| michael@0 | 25 | } |
| michael@0 | 26 | |
| michael@0 | 27 | void SetReader(MediaDecoderReader* aReader) |
| michael@0 | 28 | { |
| michael@0 | 29 | MOZ_ASSERT(!mReader); |
| michael@0 | 30 | mReader = aReader; |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | MediaDecoderReader* GetReader() |
| michael@0 | 34 | { |
| michael@0 | 35 | return mReader; |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | virtual ReentrantMonitor& GetReentrantMonitor() MOZ_OVERRIDE; |
| michael@0 | 39 | virtual bool OnStateMachineThread() const MOZ_OVERRIDE; |
| michael@0 | 40 | virtual bool OnDecodeThread() const MOZ_OVERRIDE; |
| michael@0 | 41 | virtual SourceBufferResource* GetResource() const MOZ_OVERRIDE; |
| michael@0 | 42 | virtual void SetMediaDuration(int64_t aDuration) MOZ_OVERRIDE; |
| michael@0 | 43 | virtual void UpdateEstimatedMediaDuration(int64_t aDuration) MOZ_OVERRIDE; |
| michael@0 | 44 | virtual void SetMediaSeekable(bool aMediaSeekable) MOZ_OVERRIDE; |
| michael@0 | 45 | virtual void SetTransportSeekable(bool aTransportSeekable) MOZ_OVERRIDE; |
| michael@0 | 46 | virtual layers::ImageContainer* GetImageContainer() MOZ_OVERRIDE; |
| michael@0 | 47 | virtual MediaDecoderOwner* GetOwner() MOZ_OVERRIDE; |
| michael@0 | 48 | |
| michael@0 | 49 | void NotifyDataArrived(const char* aBuffer, uint32_t aLength, int64_t aOffset) |
| michael@0 | 50 | { |
| michael@0 | 51 | mReader->NotifyDataArrived(aBuffer, aLength, aOffset); |
| michael@0 | 52 | |
| michael@0 | 53 | // XXX: Params make no sense to parent decoder as it relates to a |
| michael@0 | 54 | // specific SubBufferDecoder's data stream. Pass bogus values here to |
| michael@0 | 55 | // force parent decoder's state machine to recompute end time for |
| michael@0 | 56 | // infinite length media. |
| michael@0 | 57 | mParentDecoder->NotifyDataArrived(nullptr, 0, 0); |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | nsresult GetBuffered(dom::TimeRanges* aBuffered) |
| michael@0 | 61 | { |
| michael@0 | 62 | // XXX: Need mStartTime (from StateMachine) instead of passing 0. |
| michael@0 | 63 | return mReader->GetBuffered(aBuffered, 0); |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | // Given a time convert it into an approximate byte offset from the |
| michael@0 | 67 | // cached data. Returns -1 if no such value is computable. |
| michael@0 | 68 | int64_t ConvertToByteOffset(double aTime); |
| michael@0 | 69 | |
| michael@0 | 70 | int64_t GetMediaDuration() MOZ_OVERRIDE |
| michael@0 | 71 | { |
| michael@0 | 72 | return mMediaDuration; |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | private: |
| michael@0 | 76 | MediaSourceDecoder* mParentDecoder; |
| michael@0 | 77 | nsAutoPtr<MediaDecoderReader> mReader; |
| michael@0 | 78 | int64_t mMediaDuration; |
| michael@0 | 79 | }; |
| michael@0 | 80 | |
| michael@0 | 81 | } // namespace mozilla |
| michael@0 | 82 | |
| michael@0 | 83 | #endif /* MOZILLA_SUBBUFFERDECODER_H_ */ |
