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MPEG1Player.h
资源名称：directvideo.zip　[点击查看]
上传用户：weiliangfb
上传日期：2007-01-23
资源大小：142k
文件大小：3k
源码类别：

多媒体

开发平台：

Visual C++

MPEG1Player.h：源码内容
  1. // MPEG1Player.h: interface for the CMPEG1Player class.
  2. //
  3. //////////////////////////////////////////////////////////////////////
  5. #if !defined(AFX_MPEG1PLAYER_H__069604C0_9E1D_4F2D_ABAB_E5C3323AEA05__INCLUDED_)
  6. #define AFX_MPEG1PLAYER_H__069604C0_9E1D_4F2D_ABAB_E5C3323AEA05__INCLUDED_
  8. #if _MSC_VER > 1000
  9. #pragma once
  10. #endif // _MSC_VER > 1000
  11. #include "..ServerProtocalDef.h"
  12. class CMemStream : public CAsyncStream
  13. {
  14. PlayerEvent * m_EventSink;
  15. public:
  16.     CMemStream() 
  17.     {
  18.         m_llPosition = 0;
  19. m_EventSink = NULL;
  20.    }
  21. HRESULT Advise(PlayerEvent * pEvent)
  22. {
  23. if(pEvent==NULL)
  24. return E_POINTER;
  25. if(m_EventSink)//如果经跟客户端连接上,则返回错误
  26. return E_FAIL;
  27. m_EventSink = pEvent;
  28. return S_OK;
  29. }
  31.     HRESULT SetPointer(LONGLONG llPos)
  32.     {
  33.         if (llPos < 0 || llPos > m_llLength) {
  34.             return S_FALSE;
  35.         } else {
  36.             m_llPosition = llPos;
  37.             return S_OK;
  38.         }
  39.     }
  41.     HRESULT Read(PBYTE pbBuffer,
  42.                  DWORD dwBytesToRead,
  43.                  BOOL bAlign,
  44.                  LPDWORD pdwBytesRead)
  45.     {
  46. if(m_EventSink)
  47. {
  48. HRESULT hr = m_EventSink->OnPlayerNeedData(m_llPosition,dwBytesToRead,pdwBytesRead,pbBuffer);
  49. if(SUCCEEDED(hr))
  50. m_llPosition+=dwBytesToRead;
  51. return hr;
  52. }
  53. return E_POINTER;
  54.     }
  56.     LONGLONG Size(LONGLONG *pSizeAvailable)
  57.     {
  58.        *pSizeAvailable =  m_llLength;
  59.         return m_llLength;
  60.     }
  62.     DWORD Alignment()
  63.     {
  64.         return 1;
  65.     }
  67.     void Lock()
  68.     {
  69.         m_csLock.Lock();
  70.     }
  72.     void Unlock()
  73.     {
  74.         m_csLock.Unlock();
  75. }
  76. void SetMediaLength(LONGLONG lMediaLength)
  77. {
  78. m_llLength = lMediaLength;
  79. }
  80. protected:
  81.     CCritSec       m_csLock;
  82.     LONGLONG       m_llLength;
  83.     LONGLONG       m_llPosition;
  84. };
  85. class CAsyncFilter : public CAsyncReader
  86. {
  87.     CMemStream m_Stream;
  88. public:
  89. HRESULT Advise(PlayerEvent * pEvent)
  90. {
  91. return m_Stream.Advise(pEvent);
  92. }
  93. void SetMediaLength(LONGLONG llMeidaLen)
  94. {
  95. m_Stream.SetMediaLength(llMeidaLen);
  96. }
  98.     CAsyncFilter(HRESULT * phr):
  99.         CAsyncReader(NAME("Wang Peng Girl Friend Filter"), NULL, &m_Stream, phr)
  100.     {
  101. m_mt.majortype = MEDIATYPE_Stream;
  102.   m_mt.subtype = MEDIASUBTYPE_NULL;
  103.     }
  104.     static CAsyncFilter *CreateInstance( HRESULT *phr)
  105. {
  106.     return new CAsyncFilter(phr);
  107. }
  109.     ~CAsyncFilter()
  110.     {
  111.  
  112.     }
  113.     DECLARE_IUNKNOWN
  115.     STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void **ppv)
  116.     {
  117.         return CAsyncReader::NonDelegatingQueryInterface(riid, ppv);
  118.     }
  119. };
  120. class CMPEG1Player  
  121. {
  122. BOOL m_bInitOk;
  123. public:
  124. HRESULT SetPlayRate(double dblFps);
  125. HRESULT Run();
  126. HRESULT Pause();
  127. BOOL InitPlayer(LONGLONG llMediaLen,PlayerEvent * pEvenSink,HWND hWnd);
  128. CAsyncFilter * m_pFilter;
  129. CMPEG1Player();
  130. virtual ~CMPEG1Player();
  131. IGraphBuilder * m_pGBuilder;
  132. IFilterGraph * m_pFGraph;
  133. double m_oldRefTime;
  134. BOOL m_bHaveGet;
  135. };
  137. #endif // !defined(AFX_MPEG1PLAYER_H__069604C0_9E1D_4F2D_ABAB_E5C3323AEA05__INCLUDED_)