content/media/directshow/SampleSink.h@97036ab72558 (annotated)
content/media/directshow/SampleSink.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: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:set ts=2 sw=2 sts=2 et cindent: */ |
| 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 | #if !defined(SampleSink_h_) |
| michael@0 | 8 | #define SampleSink_h_ |
| michael@0 | 9 | |
| michael@0 | 10 | #include "BaseFilter.h" |
| michael@0 | 11 | #include "DirectShowUtils.h" |
| michael@0 | 12 | #include "nsAutoPtr.h" |
| michael@0 | 13 | #include "mozilla/RefPtr.h" |
| michael@0 | 14 | #include "mozilla/ReentrantMonitor.h" |
| michael@0 | 15 | |
| michael@0 | 16 | namespace mozilla { |
| michael@0 | 17 | |
| michael@0 | 18 | class SampleSink { |
| michael@0 | 19 | public: |
| michael@0 | 20 | SampleSink(); |
| michael@0 | 21 | virtual ~SampleSink(); |
| michael@0 | 22 | |
| michael@0 | 23 | // Sets the audio format of the incoming samples. The upstream filter |
| michael@0 | 24 | // calls this. This makes a copy. |
| michael@0 | 25 | void SetAudioFormat(const WAVEFORMATEX* aInFormat); |
| michael@0 | 26 | |
| michael@0 | 27 | // Copies the format of incoming audio samples into into *aOutFormat. |
| michael@0 | 28 | void GetAudioFormat(WAVEFORMATEX* aOutFormat); |
| michael@0 | 29 | |
| michael@0 | 30 | // Called when a sample is delivered by the DirectShow graph to the sink. |
| michael@0 | 31 | // The decode thread retrieves the sample by calling WaitForSample(). |
| michael@0 | 32 | // Blocks if there's already a sample waiting to be consumed by the decode |
| michael@0 | 33 | // thread. |
| michael@0 | 34 | HRESULT Receive(IMediaSample* aSample); |
| michael@0 | 35 | |
| michael@0 | 36 | // Retrieves a sample from the sample queue, blocking until one becomes |
| michael@0 | 37 | // available, or until an error occurs. Returns S_FALSE on EOS. |
| michael@0 | 38 | HRESULT Extract(RefPtr<IMediaSample>& aOutSample); |
| michael@0 | 39 | |
| michael@0 | 40 | // Unblocks any threads waiting in GetSample(). |
| michael@0 | 41 | // Clears mSample, which unblocks upstream stream. |
| michael@0 | 42 | void Flush(); |
| michael@0 | 43 | |
| michael@0 | 44 | // Opens up the sink to receive more samples in PutSample(). |
| michael@0 | 45 | // Clears EOS flag. |
| michael@0 | 46 | void Reset(); |
| michael@0 | 47 | |
| michael@0 | 48 | // Marks that we've reacehd the end of stream. |
| michael@0 | 49 | void SetEOS(); |
| michael@0 | 50 | |
| michael@0 | 51 | // Returns whether we're at end of stream. |
| michael@0 | 52 | bool AtEOS(); |
| michael@0 | 53 | |
| michael@0 | 54 | private: |
| michael@0 | 55 | // All data in this class is syncronized by mMonitor. |
| michael@0 | 56 | ReentrantMonitor mMonitor; |
| michael@0 | 57 | RefPtr<IMediaSample> mSample; |
| michael@0 | 58 | |
| michael@0 | 59 | // Format of the audio stream we're receiving. |
| michael@0 | 60 | WAVEFORMATEX mAudioFormat; |
| michael@0 | 61 | |
| michael@0 | 62 | bool mIsFlushing; |
| michael@0 | 63 | bool mAtEOS; |
| michael@0 | 64 | }; |
| michael@0 | 65 | |
| michael@0 | 66 | } // namespace mozilla |
| michael@0 | 67 | #endif // SampleSink_h_ |
