The Tor Browser: content/media/directshow/AudioSinkInputPin.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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/. */

     7 #if !defined(AudioSinkInputPin_h_)

     8 #define AudioSinkInputPin_h_

    10 #include "BaseInputPin.h"

    11 #include "DirectShowUtils.h"

    12 #include "mozilla/RefPtr.h"

    13 #include "nsAutoPtr.h"

    15 namespace mozilla {

    17 namespace media {

    18   class MediaType;

    19 }

    21 class AudioSinkFilter;

    22 class SampleSink;

    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();

    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;

    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;

    52   STDMETHODIMP EndOfStream() MOZ_OVERRIDE;

    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();

    59   SampleSink* GetSampleSink();

    61 private:

    62   AudioSinkFilter* GetAudioSinkFilter();

    64   // Sets the media time on the media sample, relative to the segment

    65   // start time.

    66   HRESULT SetAbsoluteMediaTime(IMediaSample* aSample);

    68   nsAutoPtr<SampleSink> mSampleSink;

    70   // Synchronized by the filter lock; BaseInputPin::mLock.

    71   REFERENCE_TIME mSegmentStartTime;

    72 };

    74 } // namespace mozilla

    75 #endif // AudioSinkInputPin_h_

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