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comparison: content/media/directshow/SampleSink.h
content/media/directshow/SampleSink.h
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
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| -1:000000000000 | 0:bcb94d8b7ce6 |
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| 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(SampleSink_h_) | |
| 8 #define SampleSink_h_ | |
| 9 | |
| 10 #include "BaseFilter.h" | |
| 11 #include "DirectShowUtils.h" | |
| 12 #include "nsAutoPtr.h" | |
| 13 #include "mozilla/RefPtr.h" | |
| 14 #include "mozilla/ReentrantMonitor.h" | |
| 15 | |
| 16 namespace mozilla { | |
| 17 | |
| 18 class SampleSink { | |
| 19 public: | |
| 20 SampleSink(); | |
| 21 virtual ~SampleSink(); | |
| 22 | |
| 23 // Sets the audio format of the incoming samples. The upstream filter | |
| 24 // calls this. This makes a copy. | |
| 25 void SetAudioFormat(const WAVEFORMATEX* aInFormat); | |
| 26 | |
| 27 // Copies the format of incoming audio samples into into *aOutFormat. | |
| 28 void GetAudioFormat(WAVEFORMATEX* aOutFormat); | |
| 29 | |
| 30 // Called when a sample is delivered by the DirectShow graph to the sink. | |
| 31 // The decode thread retrieves the sample by calling WaitForSample(). | |
| 32 // Blocks if there's already a sample waiting to be consumed by the decode | |
| 33 // thread. | |
| 34 HRESULT Receive(IMediaSample* aSample); | |
| 35 | |
| 36 // Retrieves a sample from the sample queue, blocking until one becomes | |
| 37 // available, or until an error occurs. Returns S_FALSE on EOS. | |
| 38 HRESULT Extract(RefPtr<IMediaSample>& aOutSample); | |
| 39 | |
| 40 // Unblocks any threads waiting in GetSample(). | |
| 41 // Clears mSample, which unblocks upstream stream. | |
| 42 void Flush(); | |
| 43 | |
| 44 // Opens up the sink to receive more samples in PutSample(). | |
| 45 // Clears EOS flag. | |
| 46 void Reset(); | |
| 47 | |
| 48 // Marks that we've reacehd the end of stream. | |
| 49 void SetEOS(); | |
| 50 | |
| 51 // Returns whether we're at end of stream. | |
| 52 bool AtEOS(); | |
| 53 | |
| 54 private: | |
| 55 // All data in this class is syncronized by mMonitor. | |
| 56 ReentrantMonitor mMonitor; | |
| 57 RefPtr<IMediaSample> mSample; | |
| 58 | |
| 59 // Format of the audio stream we're receiving. | |
| 60 WAVEFORMATEX mAudioFormat; | |
| 61 | |
| 62 bool mIsFlushing; | |
| 63 bool mAtEOS; | |
| 64 }; | |
| 65 | |
| 66 } // namespace mozilla | |
| 67 #endif // SampleSink_h_ |
