NullRenderers.h

/* 
 *      Copyright (C) 2003-2005 Gabest
 *      http://www.gabest.org
 *
 *  This Program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2, or (at your option)
 *  any later version.
 *   
 *  This Program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU General Public License for more details.
 *   
 *  You should have received a copy of the GNU General Public License
 *  along with GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *  http://www.gnu.org/copyleft/gpl.html
 *
 */

#pragma once

#include <atlcoll.h>

class CNullRenderer : public CBaseRenderer
{
protected:
        HRESULT DoRenderSample(IMediaSample* pSample) {return S_OK;}
public:
        CNullRenderer(REFCLSID clsid, TCHAR* pName)
                : CBaseRenderer(clsid, pName, NULL, NULL) {}
};

[uuid("579883A0-4E2D-481F-9436-467AAFAB7DE8")]
class CNullVideoRenderer : public CNullRenderer
{
protected:
        HRESULT CheckMediaType(const CMediaType* pmt);
public:
        CNullVideoRenderer()
                : CNullRenderer(__uuidof(this), NAME("Null Video Renderer")) {}
};

[uuid("DD9ED57D-6ABF-42E8-89A2-11D04798DC58")]
class CNullUVideoRenderer : public CNullRenderer
{
protected:
        HRESULT CheckMediaType(const CMediaType* pmt);
public:
        CNullUVideoRenderer()
                : CNullRenderer(__uuidof(this), NAME("Null Video Renderer (Uncompressed)")) {}
};

[uuid("0C38BDFD-8C17-4E00-A344-F89397D3E22A")]
class CNullAudioRenderer : public CNullRenderer
{
protected:
        HRESULT CheckMediaType(const CMediaType* pmt);
public:
        CNullAudioRenderer()
                : CNullRenderer(__uuidof(this), NAME("Null Audio Renderer")) {}
};

[uuid("64A45125-7343-4772-9DA4-179FAC9D462C")]
class CNullUAudioRenderer : public CNullRenderer
{
protected:
        HRESULT CheckMediaType(const CMediaType* pmt);
public:
        CNullUAudioRenderer()
                : CNullRenderer(__uuidof(this), NAME("Null Audio Renderer (Uncompressed)")) {}
};

[uuid("655D7613-C26C-4A25-BBBD-3C9C516122CC")]
class CNullTextRenderer : public CBaseFilter, public CCritSec
{
        class CTextInputPin : public CBaseInputPin
        {
        public:
                CTextInputPin(CBaseFilter* pFilter, CCritSec* pLock, HRESULT* phr) 
                        : CBaseInputPin(NAME("CTextInputPin"), pFilter, pLock, phr, L"In") {}
            HRESULT CheckMediaType(const CMediaType* pmt);
        };
        CAutoPtr<CTextInputPin> m_pInput;
public:
        CNullTextRenderer(LPUNKNOWN pUnk, HRESULT* phr);
        int GetPinCount() {return (int)!!m_pInput;}
        CBasePin* GetPin(int n) {return n == 0 ? (CBasePin*)m_pInput : NULL;}
};

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