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# NullRenderers.h

    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 #pragma once
    00023
    00024 #include <atlcoll.h>
    00025
    00026 class CNullRenderer : public CBaseRenderer
    00027 {
    00028 protected:
    00029         HRESULT DoRenderSample(IMediaSample* pSample) {return S_OK;}
    00030 public:
    00031         CNullRenderer(REFCLSID clsid, TCHAR* pName)
    00032                 : CBaseRenderer(clsid, pName, NULL, NULL) {}
    00033 };
    00034
    00035 [uuid("579883A0-4E2D-481F-9436-467AAFAB7DE8")]
    00036 class CNullVideoRenderer : public CNullRenderer
    00037 {
    00038 protected:
    00039         HRESULT CheckMediaType(const CMediaType* pmt);
    00040 public:
    00041         CNullVideoRenderer()
    00042                 : CNullRenderer(__uuidof(this), NAME("Null Video Renderer")) {}
    00043 };
    00044
    00045 [uuid("DD9ED57D-6ABF-42E8-89A2-11D04798DC58")]
    00046 class CNullUVideoRenderer : public CNullRenderer
    00047 {
    00048 protected:
    00049         HRESULT CheckMediaType(const CMediaType* pmt);
    00050 public:
    00051         CNullUVideoRenderer()
    00052                 : CNullRenderer(__uuidof(this), NAME("Null Video Renderer (Uncompressed)")) {}
    00053 };
    00054
    00055 [uuid("0C38BDFD-8C17-4E00-A344-F89397D3E22A")]
    00056 class CNullAudioRenderer : public CNullRenderer
    00057 {
    00058 protected:
    00059         HRESULT CheckMediaType(const CMediaType* pmt);
    00060 public:
    00061         CNullAudioRenderer()
    00062                 : CNullRenderer(__uuidof(this), NAME("Null Audio Renderer")) {}
    00063 };
    00064
    00065 [uuid("64A45125-7343-4772-9DA4-179FAC9D462C")]
    00066 class CNullUAudioRenderer : public CNullRenderer
    00067 {
    00068 protected:
    00069         HRESULT CheckMediaType(const CMediaType* pmt);
    00070 public:
    00071         CNullUAudioRenderer()
    00072                 : CNullRenderer(__uuidof(this), NAME("Null Audio Renderer (Uncompressed)")) {}
    00073 };
    00074
    00075 [uuid("655D7613-C26C-4A25-BBBD-3C9C516122CC")]
    00076 class CNullTextRenderer : public CBaseFilter, public CCritSec
    00077 {
    00078         class CTextInputPin : public CBaseInputPin
    00079         {
    00080         public:
    00081                 CTextInputPin(CBaseFilter* pFilter, CCritSec* pLock, HRESULT* phr)
    00082                         : CBaseInputPin(NAME("CTextInputPin"), pFilter, pLock, phr, L"In") {}
    00083             HRESULT CheckMediaType(const CMediaType* pmt);
    00084         };
    00085         CAutoPtr<CTextInputPin> m_pInput;
    00086 public:
    00087         CNullTextRenderer(LPUNKNOWN pUnk, HRESULT* phr);
    00088         int GetPinCount() {return (int)!!m_pInput;}
    00089         CBasePin* GetPin(int n) {return n == 0 ? (CBasePin*)m_pInput : NULL;}
    00090 };
    00091