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# BaseMuxerOutputPin.cpp

    00001 /*
    00002  *      Copyright (C) 2003-2005 Gabest
    00003  *      http://www.gabest.org
    00004  *
    00005  *  This Program is free software; you can redistribute it and/or modify
    00006  *  it under the terms of the GNU General Public License as published by
    00007  *  the Free Software Foundation; either version 2, or (at your option)
    00008  *  any later version.
    00009  *
    00010  *  This Program is distributed in the hope that it will be useful,
    00011  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    00013  *  GNU General Public License for more details.
    00014  *
    00015  *  You should have received a copy of the GNU General Public License
    00016  *  along with GNU Make; see the file COPYING.  If not, write to
    00017  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
    00018  *  http://www.gnu.org/copyleft/gpl.html
    00019  *
    00020  */
    00021
    00022 #include "StdAfx.h"
    00023 #include "BaseMuxerOutputPin.h"
    00024
    00025 //
    00026 // CBaseMuxerOutputPin
    00027 //
    00028
    00029 CBaseMuxerOutputPin::CBaseMuxerOutputPin(TCHAR* pName, CBaseFilter* pFilter, CCritSec* pLock, HRESULT* phr)
    00030         : CBaseOutputPin(pName, pFilter, pLock, phr, L"Output")
    00031 {
    00032 }
    00033
    00034 CBaseMuxerOutputPin::~CBaseMuxerOutputPin()
    00035 {
    00036 }
    00037
    00038 HRESULT CBaseMuxerOutputPin::DecideBufferSize(IMemAllocator* pAlloc, ALLOCATOR_PROPERTIES* pProperties)
    00039 {
    00040     ASSERT(pAlloc);
    00041     ASSERT(pProperties);
    00042
    00043     HRESULT hr = NOERROR;
    00044
    00045         pProperties->cBuffers = 1;
    00046         pProperties->cbBuffer = 1;
    00047
    00048     ALLOCATOR_PROPERTIES Actual;
    00049     if(FAILED(hr = pAlloc->SetProperties(pProperties, &Actual))) return hr;
    00050
    00051     if(Actual.cbBuffer < pProperties->cbBuffer) return E_FAIL;
    00052     ASSERT(Actual.cBuffers == pProperties->cBuffers);
    00053
    00054     return NOERROR;
    00055 }
    00056
    00057 HRESULT CBaseMuxerOutputPin::CheckMediaType(const CMediaType* pmt)
    00058 {
    00059         return pmt->majortype == MEDIATYPE_Stream && pmt->subtype == MEDIASUBTYPE_NULL
    00060                 ? S_OK
    00061                 : E_INVALIDARG;
    00062 }
    00063
    00064 HRESULT CBaseMuxerOutputPin::GetMediaType(int iPosition, CMediaType* pmt)
    00065 {
    00066     CAutoLock cAutoLock(m_pLock);
    00067
    00068         if(iPosition < 0) return E_INVALIDARG;
    00069         if(iPosition > 0) return VFW_S_NO_MORE_ITEMS;
    00070
    00071         pmt->ResetFormatBuffer();
    00072         pmt->InitMediaType();
    00073         pmt->majortype = MEDIATYPE_Stream;
    00074         pmt->subtype = MEDIASUBTYPE_NULL;
    00075         pmt->formattype = FORMAT_None;
    00076
    00077         return S_OK;
    00078 }
    00079
    00080 STDMETHODIMP CBaseMuxerOutputPin::Notify(IBaseFilter* pSender, Quality q)
    00081 {
    00082         return E_NOTIMPL;
    00083 }