globaldefs.h

实现视频点播功能,c_s结构,服务器端共享文件,客户端可以播放,媒体数据传输通过RTP协议,播放通过Directshow

#ifndef __H_defines__
#define __H_defines__

//-----------------------------------------------------------------------------
// Miscellaneous helper functions
//-----------------------------------------------------------------------------
#define SAFE_DELETE(p)       { if(p) { delete (p);     (p)=NULL; } }
#define SAFE_DELETE_ARRAY(p) { if(p) { delete[] (p);   (p)=NULL; } }
#define SAFE_RELEASE(p)      { if(p) { (p)->Release(); (p)=NULL; } }

static const GUID CLSID_MYREALAUDIODECOM = 
{0x941a4793,0xa705,0x4312,0x8d,0xfc,0xc1,0x1c,0xa0,0x5f,0x39,0x7e}; 
// File types we support currently
const long FT_MPEG1		= 0;
const long FT_MPEG2		= 1;
const long FT_AVI		= 2;
const long FT_MP3		= 3;
const long FT_REAL		= 4;
const long FT_OGG		= 5;

// Message definitions
const long msg_CommandReceived		= 'vod0' + 1;
const long msg_NewSocketAccepted	= 'vod0' + 2;
const long msg_FilterGraphError		= 'vod0' + 3;
const long msg_MediaTypeReceived    = 'vod0' + 4;

const WORD SERVER_CONTROLL_PORT  = 10080;
const WORD SERVER_VIDEO_PORT  = 10081;
const WORD SERVER_AUDIO_PORT  = 10086;

const long MAX_COMMAND_SIZE = 300;
const long PACK_SIZE		= 2048;

// UDP commands
typedef enum
{
	Cmd_RequestTCPDisconnect=0,
	Cmd_RequestProgramList,
	Cmd_ProgramList,	
	Cmd_RequestPlay,   // Media playing control
	Cmd_RequestPause,
	Cmd_RequestResume,
	Cmd_RequestStop,
	Cmd_Error,
	Cmd_SetProgress,
} Net_Command;

// struct Request_ProgramList

struct Program_List
{
	char file_path[200];
	long pid;
	long file_type;
	long file_size;
	void my_hton(void) 
	{
		pid				= htonl(pid);
		file_type		= htonl(file_type);
		file_size		= htonl(file_size);
	};

	void my_ntoh(void) 
	{
		pid				= ntohl(pid);
		file_type		= ntohl(file_type);
		file_size		= ntohl(file_size);
	};
};

// We should specify the program id when control the media playing
struct Media_Control
{
	long program_id;

	void my_hton(void) 
	{
		program_id		= htonl(program_id);
	};

	void my_ntoh(void) 
	{
		program_id		= ntohl(program_id);
	};
};
struct Media_Progress
{
	int program_Progress;

	void my_hton(void) 
	{
		program_Progress		= htonl(program_Progress);
	};

	void my_ntoh(void) 
	{
		program_Progress		= ntohl(program_Progress);
	};
};
struct Pack_Header
{
	long pack_type;
	long pack_size;

	void my_hton(void) 
	{
		pack_type		= htonl(pack_type);
		pack_size		= htonl(pack_size);
	};

	void my_ntoh(void) 
	{
		pack_type		= ntohl(pack_type);
		pack_size		= ntohl(pack_size);
	};
};
struct Pack_GUID
{
	GUID majortype;
	GUID subtype;
	GUID formattype;
};
// TCP pack types
const long PT_AudioMediaType	= 10001;
const long PT_VideoMediaType	= 10002;
const long PT_Payload			= 10003;
const long PT_SampleLength		= 10004;

#endif // __H_defines__