1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/directshow/AudioSinkInputPin.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,75 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* vim:set ts=2 sw=2 sts=2 et cindent: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#if !defined(AudioSinkInputPin_h_)
1.11 +#define AudioSinkInputPin_h_
1.12 +
1.13 +#include "BaseInputPin.h"
1.14 +#include "DirectShowUtils.h"
1.15 +#include "mozilla/RefPtr.h"
1.16 +#include "nsAutoPtr.h"
1.17 +
1.18 +namespace mozilla {
1.19 +
1.20 +namespace media {
1.21 + class MediaType;
1.22 +}
1.23 +
1.24 +class AudioSinkFilter;
1.25 +class SampleSink;
1.26 +
1.27 +
1.28 +// Input pin for capturing audio output of a DirectShow filter graph.
1.29 +// This is the input pin for the AudioSinkFilter.
1.30 +class AudioSinkInputPin: public mozilla::media::BaseInputPin
1.31 +{
1.32 +public:
1.33 + AudioSinkInputPin(wchar_t* aObjectName,
1.34 + AudioSinkFilter* aFilter,
1.35 + mozilla::CriticalSection* aLock,
1.36 + HRESULT* aOutResult);
1.37 + virtual ~AudioSinkInputPin();
1.38 +
1.39 + HRESULT GetMediaType (IN int iPos, OUT mozilla::media::MediaType * pmt);
1.40 + HRESULT CheckMediaType (IN const mozilla::media::MediaType * pmt);
1.41 + STDMETHODIMP Receive (IN IMediaSample *);
1.42 + STDMETHODIMP BeginFlush() MOZ_OVERRIDE;
1.43 + STDMETHODIMP EndFlush() MOZ_OVERRIDE;
1.44 +
1.45 + // Called when we start decoding a new segment, that happens directly after
1.46 + // a seek. This captures the segment's start time. Samples decoded by the
1.47 + // MP3 decoder have their timestamps offset from the segment start time.
1.48 + // Storing the segment start time enables us to set each sample's MediaTime
1.49 + // as an offset in the stream relative to the start of the stream, rather
1.50 + // than the start of the segment, i.e. its absolute time in the stream.
1.51 + STDMETHODIMP NewSegment(REFERENCE_TIME tStart,
1.52 + REFERENCE_TIME tStop,
1.53 + double dRate) MOZ_OVERRIDE;
1.54 +
1.55 + STDMETHODIMP EndOfStream() MOZ_OVERRIDE;
1.56 +
1.57 + // Returns the IMediaSeeking interface of the connected output pin.
1.58 + // We forward seeking requests upstream from the sink to the source
1.59 + // filters.
1.60 + TemporaryRef<IMediaSeeking> GetConnectedPinSeeking();
1.61 +
1.62 + SampleSink* GetSampleSink();
1.63 +
1.64 +private:
1.65 + AudioSinkFilter* GetAudioSinkFilter();
1.66 +
1.67 + // Sets the media time on the media sample, relative to the segment
1.68 + // start time.
1.69 + HRESULT SetAbsoluteMediaTime(IMediaSample* aSample);
1.70 +
1.71 + nsAutoPtr<SampleSink> mSampleSink;
1.72 +
1.73 + // Synchronized by the filter lock; BaseInputPin::mLock.
1.74 + REFERENCE_TIME mSegmentStartTime;
1.75 +};
1.76 +
1.77 +} // namespace mozilla
1.78 +#endif // AudioSinkInputPin_h_
