dvbo.h

Example Dreambox CAM source code

//========================
//Header file for dvb.cpp
//========================

typedef struct ECMPIDS
{
	int CA_PID;
	int CA_System_ID;
} ECMPIDSTYPE;


class dvbo_handler
{
	public:
	//Properties (variables)
	int 			dbg;										//Show debug info on the console, 0=no, other=yes
	int				fd;											//Demultiplexer device file handle
	ECMPIDSTYPE 	ECMpids[20];								//expect no more than 20 ECMs, an array is an ugly solution but easy to manage :-)
	int				ECMpidcount;								//Amount of ECM pids found in the PMT
																
	unsigned char	ECMbuffer[4096];							//Buffer with encrypted ECM data to be forwarded to the cardserver or whatever EMU you would like to develop yourself!!!!
	int				ECMbufsize;									//Size of the ECM data, needed for ncc->SendECM function!
	int				lock;										//Valid (CAid, Providerid) pair found; use this to speed up ECM handling after initial scan of all CAid's, provider ids etc etc....

	//Methods (functions)
	public:														//lets just make all public, I don't like security :-)
	dvbo_handler(int progid, int dmx_fd, int debug);			//The currently selected channel id and the required debuglevel are the inputs
	//~dvbo_handler(void);										//Cleanup. Called at every channel change (zapping with the remote control of the Dreambox)

	int  Set_Filter(int pid, char filt, char mask);				//Start the demux filtering
	int  Stop_Filter(void);										//Stop the demux filtering
	int  Parse_PAT(int prognr);									//PAT table analysis
	void Parse_CA_Descriptor_Section(char *buf, int cplen);		//Helper function for the PMT table parser, retrieve the CAid from the PMT table
	int  Parse_PMT(int prognr);									//PMT table analysis
	int  Parse_ECM(int capid);									//Small function to retrieve the content of an ECM table, returns the provider id
};