The Tor Browser: content/media/directshow/AudioSinkFilter.h@44a2da4a2ab2

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

     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(AudioSinkFilter_h_)

     8 #define AudioSinkFilter_h_

    10 #include "BaseFilter.h"

    11 #include "DirectShowUtils.h"

    12 #include "nsAutoPtr.h"

    13 #include "mozilla/RefPtr.h"

    15 namespace mozilla {

    17 class AudioSinkInputPin;

    18 class SampleSink;

    20 // Filter that acts as the end of the graph. Audio samples input into

    21 // this filter block the calling thread, and the calling thread is

    22 // unblocked when the decode thread extracts the sample. The samples

    23 // input into this filter are stored in the SampleSink, where the blocking

    24 // is implemented. The input pin owns the SampleSink.

    25 class AudioSinkFilter: public mozilla::media::BaseFilter,

    26                        public IMediaSeeking

    27 {

    29 public:

    30   AudioSinkFilter(const wchar_t* aObjectName, HRESULT* aOutResult);

    31   virtual ~AudioSinkFilter();

    33   // Gets the input pin's sample sink.

    34   SampleSink* GetSampleSink();

    36   // IUnknown implementation.

    37   STDMETHODIMP QueryInterface(REFIID aIId, void **aInterface);

    38   STDMETHODIMP_(ULONG) AddRef();

    39   STDMETHODIMP_(ULONG) Release();

    41   //  --------------------------------------------------------------------

    42   //  CBaseFilter methods

    43   int GetPinCount ();

    44   mozilla::media::BasePin* GetPin ( IN int Index);

    45   STDMETHODIMP Pause ();

    46   STDMETHODIMP Stop ();

    47   STDMETHODIMP GetClassID ( OUT CLSID * pCLSID);

    48   STDMETHODIMP Run(REFERENCE_TIME tStart);

    49   // IMediaSeeking Methods...

    51   // We defer to SourceFilter, but we must expose the interface on

    52   // the output pins. Seeking commands come upstream from the renderers,

    53   // but they must be actioned at the source filters.

    54   STDMETHODIMP GetCapabilities(DWORD* aCapabilities);

    55   STDMETHODIMP CheckCapabilities(DWORD* aCapabilities);

    56   STDMETHODIMP IsFormatSupported(const GUID* aFormat);

    57   STDMETHODIMP QueryPreferredFormat(GUID* aFormat);

    58   STDMETHODIMP GetTimeFormat(GUID* aFormat);

    59   STDMETHODIMP IsUsingTimeFormat(const GUID* aFormat);

    60   STDMETHODIMP SetTimeFormat(const GUID* aFormat);

    61   STDMETHODIMP GetDuration(LONGLONG* pDuration);

    62   STDMETHODIMP GetStopPosition(LONGLONG* pStop);

    63   STDMETHODIMP GetCurrentPosition(LONGLONG* aCurrent);

    64   STDMETHODIMP ConvertTimeFormat(LONGLONG* aTarget,

    65                                  const GUID* aTargetFormat,

    66                                  LONGLONG aSource,

    67                                  const GUID* aSourceFormat);

    68   STDMETHODIMP SetPositions(LONGLONG* aCurrent,

    69                             DWORD aCurrentFlags,

    70                             LONGLONG* aStop,

    71                             DWORD aStopFlags);

    72   STDMETHODIMP GetPositions(LONGLONG* aCurrent,

    73                             LONGLONG* aStop);

    74   STDMETHODIMP GetAvailable(LONGLONG* aEarliest,

    75                             LONGLONG* aLatest);

    76   STDMETHODIMP SetRate(double aRate);

    77   STDMETHODIMP GetRate(double* aRate);

    78   STDMETHODIMP GetPreroll(LONGLONG* aPreroll);

    80   //  --------------------------------------------------------------------

    81   //  class factory calls this

    82   static IUnknown * CreateInstance (IN LPUNKNOWN punk, OUT HRESULT * phr);

    84 private:

    85   CriticalSection mFilterCritSec;

    87   // Note: The input pin defers its refcounting to the sink filter, so when

    88   // the input pin is addrefed, what actually happens is the sink filter is

    89   // addrefed.

    90   nsAutoPtr<AudioSinkInputPin> mInputPin;

    91 };

    93 } // namespace mozilla

    94 #endif // AudioSinkFilter_h_

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