减少捕获音视频时申请内存次数

减少音频视频捕获过程中频繁申请内存。

client/VideoManager.h

@@ -23,7 +23,7 @@ public:
 	HANDLE m_hWorkThread;
 
 	void SendBitMapInfor();
-	void SendNextScreen();
+	BOOL SendNextScreen();
 	static DWORD WorkThread(LPVOID lParam);
 
 	CCaptureVideo  m_CapVideo;
@@ -32,6 +32,7 @@ public:
 
 	DWORD	m_fccHandler;
 	bool    m_bIsCompress;
+	LPBYTE  lpBuffer; // ץͼ<D7A5><CDBC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 
 	CVideoCodec	*m_pVideoCodec;   //ѹ<><D1B9><EFBFBD><EFBFBD>
 	void Destroy();