VorbisDecodeOutputPin.cpp

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00001 //===========================================================================
00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh
00003 //
00004 //Redistribution and use in source and binary forms, with or without
00005 //modification, are permitted provided that the following conditions
00006 //are met:
00007 //
00008 //- Redistributions of source code must retain the above copyright
00009 //  notice, this list of conditions and the following disclaimer.
00010 //
00011 //- Redistributions in binary form must reproduce the above copyright
00012 //  notice, this list of conditions and the following disclaimer in the
00013 //  documentation and/or other materials provided with the distribution.
00014 //
00015 //- Neither the name of Zentaro Kavanagh nor the names of contributors 
00016 //  may be used to endorse or promote products derived from this software 
00017 //  without specific prior written permission.
00018 //
00019 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00022 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
00023 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00024 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00025 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 //===========================================================================
00031 
00032 #include "stdafx.h"
00033 #include "Vorbisdecodeoutputpin.h"
00034 
00035 VorbisDecodeOutputPin::VorbisDecodeOutputPin(VorbisDecodeFilter* inParentFilter, CCritSec* inFilterLock, vector<CMediaType*> inAcceptableMediaTypes)
00036         : AbstractTransformOutputPin(inParentFilter, inFilterLock,NAME("VorbisDecodeOutputPin"), L"PCM Out", 65536, 20, inAcceptableMediaTypes)
00037 {
00038 
00039                 
00040 }
00041 VorbisDecodeOutputPin::~VorbisDecodeOutputPin(void)
00042 {
00043         
00044         
00045 }
00046 
00047 STDMETHODIMP VorbisDecodeOutputPin::NonDelegatingQueryInterface(REFIID riid, void **ppv)
00048 {
00049         if (riid == IID_IMediaSeeking) {
00050                 *ppv = (IMediaSeeking*)this;
00051                 ((IUnknown*)*ppv)->AddRef();
00052                 return NOERROR;
00053         }
00054 
00055         return CBaseOutputPin::NonDelegatingQueryInterface(riid, ppv); 
00056 }
00057 
00058 HRESULT VorbisDecodeOutputPin::CreateAndFillFormatBuffer(CMediaType* outMediaType, int inPosition)
00059 {
00060         if (inPosition == 0) {
00061                 WAVEFORMATEX* locWaveFormat = (WAVEFORMATEX*)outMediaType->AllocFormatBuffer(sizeof(WAVEFORMATEX));
00062                 //TODO::: Check for null ?
00063 
00064                 locWaveFormat->wFormatTag = WAVE_FORMAT_PCM;
00065                 locWaveFormat->nChannels = ((VorbisDecodeFilter*)m_pFilter)->mVorbisFormatInfo->numChannels;
00066                 locWaveFormat->nSamplesPerSec =  ((VorbisDecodeFilter*)m_pFilter)->mVorbisFormatInfo->samplesPerSec;
00067                 locWaveFormat->wBitsPerSample = 16;
00068                 locWaveFormat->nBlockAlign = (locWaveFormat->nChannels) * (locWaveFormat->wBitsPerSample >> 3);
00069                 locWaveFormat->nAvgBytesPerSec = ((locWaveFormat->nChannels) * (locWaveFormat->wBitsPerSample >> 3)) * locWaveFormat->nSamplesPerSec;
00070                 locWaveFormat->cbSize = 0;
00071                 return S_OK;
00072         } else {
00073         return S_FALSE;
00074         }
00075 }
00076 
00077 
00078 //Old imp
00079 //****************************************************
00080 //#include "stdafx.h"
00081 //#include "Vorbisdecodeoutputpin.h"
00082 //
00083 //VorbisDecodeOutputPin::VorbisDecodeOutputPin(VorbisDecodeFilter* inParentFilter, CCritSec* inFilterLock)
00084 //      : AbstractAudioDecodeOutputPin(inParentFilter, inFilterLock,NAME("VorbisDecodeOutputPin"), L"PCM Out")
00085 //{
00086 //
00087 //              
00088 //}
00089 //VorbisDecodeOutputPin::~VorbisDecodeOutputPin(void)
00090 //{
00091 //      
00092 //      
00093 //}
00094 //
00095 //STDMETHODIMP VorbisDecodeOutputPin::NonDelegatingQueryInterface(REFIID riid, void **ppv)
00096 //{
00097 //      if (riid == IID_IMediaSeeking) {
00098 //              *ppv = (IMediaSeeking*)this;
00099 //              ((IUnknown*)*ppv)->AddRef();
00100 //              return NOERROR;
00101 //      }
00102 //
00103 //      return CBaseOutputPin::NonDelegatingQueryInterface(riid, ppv); 
00104 //}
00105 //
00106 //bool VorbisDecodeOutputPin::FillWaveFormatExBuffer(WAVEFORMATEX* inFormatBuffer) {
00107 //      inFormatBuffer->wFormatTag = WAVE_FORMAT_PCM;
00108 //      inFormatBuffer->nChannels = ((VorbisDecodeFilter*)m_pFilter)->mVorbisFormatInfo->numChannels;
00109 //      inFormatBuffer->nSamplesPerSec =  ((VorbisDecodeFilter*)m_pFilter)->mVorbisFormatInfo->samplesPerSec;
00110 //      inFormatBuffer->wBitsPerSample = 16;
00111 //      inFormatBuffer->nBlockAlign = (inFormatBuffer->nChannels) * (inFormatBuffer->wBitsPerSample >> 3);
00112 //      inFormatBuffer->nAvgBytesPerSec = ((inFormatBuffer->nChannels) * (inFormatBuffer->wBitsPerSample >> 3)) * inFormatBuffer->nSamplesPerSec;
00113 //      inFormatBuffer->cbSize = 0;
00114 //      return true;
00115 //}

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