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chxavplayerstate.h
资源名称：helix.src.0812.rar　[点击查看]
上传用户：zhongxx05
上传日期：2007-06-06
资源大小：33641k
文件大小：3k
源码类别：

Symbian

开发平台：

C/C++

chxavplayerstate.h：源码内容
  1. /************************************************************************
  2.  * chxavplayerstate.h
  3.  * ------------------
  4.  *
  5.  * Synopsis:
  6.  * CHXAvPlayerState is helper class for CHXAvPlayer. It maintains player 
  7.  * state info and dispatches event notifications to observers. Observers
  8.  * can use this to query for current player state info.
  9.  *
  10.  *
  11.  * Target:
  12.  * Symbian OS
  13.  *
  14.  *
  15.  * (c) 1995-2003 RealNetworks, Inc. Patents pending. All rights reserved.
  16.  *
  17.  ************************************************************************/
  19. #ifndef CHXAVPLAYERSTATE_H__
  20. #define CHXAVPLAYERSTATE_H__
  23. #include "unkimp.h"
  24. #include "hxstring.h"
  25. #include "ihxpckts.h"
  26. #include "hxurl.h"
  27. #include "hxfiles.h"
  30. //#include "chxavcallback.h"
  31. #include "chxavplayerstatedispatch.h"
  32.   
  34. // class CHXAvPlayerState
  35. class CHXAvPlayerState
  36. {
  37. public:
  39.     // main player states
  40.     enum State
  41.     {
  42. Stopped,
  43.         Initiating,
  44. Connecting,
  45. Playing,
  46.         Seeking,
  47. Paused
  48.     };
  50.     // buffering sub-state applies while playing, seeking, paused
  51.     enum BufferState
  52.     {
  53.         NotBuffering,
  54.         BufferLoad,
  55.         BufferSeek,
  56.         BufferPlain
  57.     };
  59. public:
  61.     CHXAvPlayerState();
  62.     virtual ~CHXAvPlayerState();
  63.     void ConstructL();
  65. public:
  67.     State GetState() const;
  68.     BufferState GetBufferingState() const;
  69.     UINT16 GetLastBufferPercent() const;
  71.     void RemoveObserver(IHXSymPlayerStateObserver *observer);
  72.     void AddObserver(IHXSymPlayerStateObserver *observer);
  74. private:
  76.     friend class CHXAvPlayer;
  78.     // called by CHXAvPlayer
  79.     void OnPlayInitiate(const char *url); 
  80.     void OnNetConnect();
  81.     void OnLoadSession(IHXRequest *request); 
  82.     void OnResume();  
  83.     void OnStop();
  84.     void OnPause();
  85.     void OnBuffering(ULONG32 type, UINT16 percent);
  86.     void OnBeginSeek();
  87.     void OnNewPos(ULONG32 time);
  88.     void OnVolume(unsigned int percentVol);
  89.     void OnMute(bool bMute);
  90.     void OnError(HX_RESULT code);
  91.     void OnAdvancePlaylist();
  93. private:
  94.     // implementation
  95.     void ChangeState(State destState);
  96.     void ChangeBufferState(BufferState destState);
  98.     CHXAvPlayerStateDispatch* m_pDispatch;
  99.     State  m_state; 
  100.     BufferState m_bufferState;
  101.     UINT16 m_lastBufferPercent;
  102.     ULONG32 m_lastTime;
  104.     //CHXAvCallback m_cbConnectStateTransition;
  105. };
  107. inline
  108. CHXAvPlayerState::State CHXAvPlayerState::GetState() const { return m_state; }
  110. inline
  111. CHXAvPlayerState::BufferState CHXAvPlayerState::GetBufferingState() const { return m_bufferState; }
  113. inline
  114. UINT16 CHXAvPlayerState::GetLastBufferPercent() const { return m_lastBufferPercent; }
  117. #endif // CHXAVPLAYERSTATE_H__