michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #if !defined(AudioSinkInputPin_h_)
michael@0: #define AudioSinkInputPin_h_
michael@0: 
michael@0: #include "BaseInputPin.h"
michael@0: #include "DirectShowUtils.h"
michael@0: #include "mozilla/RefPtr.h"
michael@0: #include "nsAutoPtr.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: namespace media {
michael@0:   class MediaType;
michael@0: }
michael@0: 
michael@0: class AudioSinkFilter;
michael@0: class SampleSink;
michael@0: 
michael@0: 
michael@0: // Input pin for capturing audio output of a DirectShow filter graph.
michael@0: // This is the input pin for the AudioSinkFilter.
michael@0: class AudioSinkInputPin: public mozilla::media::BaseInputPin
michael@0: {
michael@0: public:
michael@0:   AudioSinkInputPin(wchar_t* aObjectName,
michael@0:                     AudioSinkFilter* aFilter,
michael@0:                     mozilla::CriticalSection* aLock,
michael@0:                     HRESULT* aOutResult);
michael@0:   virtual ~AudioSinkInputPin();
michael@0: 
michael@0:   HRESULT GetMediaType (IN int iPos, OUT mozilla::media::MediaType * pmt);
michael@0:   HRESULT CheckMediaType (IN const mozilla::media::MediaType * pmt);
michael@0:   STDMETHODIMP Receive (IN IMediaSample *);
michael@0:   STDMETHODIMP BeginFlush() MOZ_OVERRIDE;
michael@0:   STDMETHODIMP EndFlush() MOZ_OVERRIDE;
michael@0: 
michael@0:   // Called when we start decoding a new segment, that happens directly after
michael@0:   // a seek. This captures the segment's start time. Samples decoded by the
michael@0:   // MP3 decoder have their timestamps offset from the segment start time.
michael@0:   // Storing the segment start time enables us to set each sample's MediaTime
michael@0:   // as an offset in the stream relative to the start of the stream, rather
michael@0:   // than the start of the segment, i.e. its absolute time in the stream.
michael@0:   STDMETHODIMP NewSegment(REFERENCE_TIME tStart,
michael@0:                           REFERENCE_TIME tStop,
michael@0:                           double dRate) MOZ_OVERRIDE;
michael@0: 
michael@0:   STDMETHODIMP EndOfStream() MOZ_OVERRIDE;
michael@0: 
michael@0:   // Returns the IMediaSeeking interface of the connected output pin.
michael@0:   // We forward seeking requests upstream from the sink to the source
michael@0:   // filters.
michael@0:   TemporaryRef<IMediaSeeking> GetConnectedPinSeeking();
michael@0: 
michael@0:   SampleSink* GetSampleSink();
michael@0: 
michael@0: private:
michael@0:   AudioSinkFilter* GetAudioSinkFilter();
michael@0: 
michael@0:   // Sets the media time on the media sample, relative to the segment
michael@0:   // start time.
michael@0:   HRESULT SetAbsoluteMediaTime(IMediaSample* aSample);
michael@0: 
michael@0:   nsAutoPtr<SampleSink> mSampleSink;
michael@0: 
michael@0:   // Synchronized by the filter lock; BaseInputPin::mLock.
michael@0:   REFERENCE_TIME mSegmentStartTime;
michael@0: };
michael@0: 
michael@0: } // namespace mozilla
michael@0: #endif // AudioSinkInputPin_h_