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comparison: content/media/directshow/AudioSinkInputPin.h
content/media/directshow/AudioSinkInputPin.h
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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(AudioSinkInputPin_h_) | |
| 8 #define AudioSinkInputPin_h_ | |
| 9 | |
| 10 #include "BaseInputPin.h" | |
| 11 #include "DirectShowUtils.h" | |
| 12 #include "mozilla/RefPtr.h" | |
| 13 #include "nsAutoPtr.h" | |
| 14 | |
| 15 namespace mozilla { | |
| 16 | |
| 17 namespace media { | |
| 18 class MediaType; | |
| 19 } | |
| 20 | |
| 21 class AudioSinkFilter; | |
| 22 class SampleSink; | |
| 23 | |
| 24 | |
| 25 // Input pin for capturing audio output of a DirectShow filter graph. | |
| 26 // This is the input pin for the AudioSinkFilter. | |
| 27 class AudioSinkInputPin: public mozilla::media::BaseInputPin | |
| 28 { | |
| 29 public: | |
| 30 AudioSinkInputPin(wchar_t* aObjectName, | |
| 31 AudioSinkFilter* aFilter, | |
| 32 mozilla::CriticalSection* aLock, | |
| 33 HRESULT* aOutResult); | |
| 34 virtual ~AudioSinkInputPin(); | |
| 35 | |
| 36 HRESULT GetMediaType (IN int iPos, OUT mozilla::media::MediaType * pmt); | |
| 37 HRESULT CheckMediaType (IN const mozilla::media::MediaType * pmt); | |
| 38 STDMETHODIMP Receive (IN IMediaSample *); | |
| 39 STDMETHODIMP BeginFlush() MOZ_OVERRIDE; | |
| 40 STDMETHODIMP EndFlush() MOZ_OVERRIDE; | |
| 41 | |
| 42 // Called when we start decoding a new segment, that happens directly after | |
| 43 // a seek. This captures the segment's start time. Samples decoded by the | |
| 44 // MP3 decoder have their timestamps offset from the segment start time. | |
| 45 // Storing the segment start time enables us to set each sample's MediaTime | |
| 46 // as an offset in the stream relative to the start of the stream, rather | |
| 47 // than the start of the segment, i.e. its absolute time in the stream. | |
| 48 STDMETHODIMP NewSegment(REFERENCE_TIME tStart, | |
| 49 REFERENCE_TIME tStop, | |
| 50 double dRate) MOZ_OVERRIDE; | |
| 51 | |
| 52 STDMETHODIMP EndOfStream() MOZ_OVERRIDE; | |
| 53 | |
| 54 // Returns the IMediaSeeking interface of the connected output pin. | |
| 55 // We forward seeking requests upstream from the sink to the source | |
| 56 // filters. | |
| 57 TemporaryRef<IMediaSeeking> GetConnectedPinSeeking(); | |
| 58 | |
| 59 SampleSink* GetSampleSink(); | |
| 60 | |
| 61 private: | |
| 62 AudioSinkFilter* GetAudioSinkFilter(); | |
| 63 | |
| 64 // Sets the media time on the media sample, relative to the segment | |
| 65 // start time. | |
| 66 HRESULT SetAbsoluteMediaTime(IMediaSample* aSample); | |
| 67 | |
| 68 nsAutoPtr<SampleSink> mSampleSink; | |
| 69 | |
| 70 // Synchronized by the filter lock; BaseInputPin::mLock. | |
| 71 REFERENCE_TIME mSegmentStartTime; | |
| 72 }; | |
| 73 | |
| 74 } // namespace mozilla | |
| 75 #endif // AudioSinkInputPin_h_ |
