src/dsutil/NullRenderers.h

   1 /*
   2  *      Copyright (C) 2003-2006 Gabest
   3  *      http://www.gabest.org
   4  *
   5  *  This Program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2, or (at your option)
   8  *  any later version.
   9  *
  10  *  This Program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GNU Make; see the file COPYING.  If not, write to
  17  *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  18  *  http://www.gnu.org/copyleft/gpl.html
  19  *
  20  */
  21
  22 #pragma once
  23
  24 #include <atlcoll.h>
  25
  26 class CNullRenderer : public CBaseRenderer
  27 {
  28 protected:
  29         HRESULT DoRenderSample(IMediaSample* pSample) {return S_OK;}
  30
  31 public:
  32         CNullRenderer(REFCLSID clsid, TCHAR* pName, LPUNKNOWN pUnk, HRESULT* phr);
  33 };
  34
  35 [uuid("579883A0-4E2D-481F-9436-467AAFAB7DE8")]
  36 class CNullVideoRenderer : public CNullRenderer
  37 {
  38 protected:
  39         HRESULT CheckMediaType(const CMediaType* pmt);
  40
  41 public:
  42         CNullVideoRenderer(LPUNKNOWN pUnk, HRESULT* phr);
  43 };
  44
  45 [uuid("DD9ED57D-6ABF-42E8-89A2-11D04798DC58")]
  46 class CNullUVideoRenderer : public CNullRenderer
  47 {
  48 protected:
  49         HRESULT CheckMediaType(const CMediaType* pmt);
  50
  51 public:
  52         CNullUVideoRenderer(LPUNKNOWN pUnk, HRESULT* phr);
  53 };
  54
  55 [uuid("0C38BDFD-8C17-4E00-A344-F89397D3E22A")]
  56 class CNullAudioRenderer : public CNullRenderer
  57 {
  58 protected:
  59         HRESULT CheckMediaType(const CMediaType* pmt);
  60
  61 public:
  62         CNullAudioRenderer(LPUNKNOWN pUnk, HRESULT* phr);
  63 };
  64
  65 [uuid("64A45125-7343-4772-9DA4-179FAC9D462C")]
  66 class CNullUAudioRenderer : public CNullRenderer
  67 {
  68 protected:
  69         HRESULT CheckMediaType(const CMediaType* pmt);
  70
  71 public:
  72         CNullUAudioRenderer(LPUNKNOWN pUnk, HRESULT* phr);
  73 };
  74
  75 [uuid("655D7613-C26C-4A25-BBBD-3C9C516122CC")]
  76 class CNullTextRenderer : public CBaseFilter, public CCritSec
  77 {
  78         class CTextInputPin : public CBaseInputPin
  79         {
  80         public:
  81                 CTextInputPin(CBaseFilter* pFilter, CCritSec* pLock, HRESULT* phr)
  82                         : CBaseInputPin(NAME("CTextInputPin"), pFilter, pLock, phr, L"In") {}
  83             HRESULT CheckMediaType(const CMediaType* pmt);
  84         };
  85
  86         CAutoPtr<CTextInputPin> m_pInput;
  87
  88 public:
  89         CNullTextRenderer(LPUNKNOWN pUnk, HRESULT* phr);
  90         int GetPinCount() {return (int)!!m_pInput;}
  91         CBasePin* GetPin(int n) {return n == 0 ? (CBasePin*)m_pInput : NULL;}
  92 };
  93