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