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