[linux-dvb] Re: Problems with budget dvb-s cards

[nuko-mail@web.de]

The following code does a few loops and then kills my card:
(or is there something wrong with the program??)


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/dmx.h>
#include <errno.h>
#include <string.h>
#include <sys/ioctl.h>
#include <fcntl.h>

void SetFiltSection (int fd, unsigned short pid, unsigned char tid)
{
	struct dmx_sct_filter_params sctFilterParams;
	memset(&sctFilterParams, 0, sizeof(sctFilterParams));
	sctFilterParams.pid     = pid;
	sctFilterParams.timeout = 6000;
	sctFilterParams.flags   = DMX_IMMEDIATE_START;

	sctFilterParams.filter.filter[0] = tid;
	sctFilterParams.filter.mask[0] = 0xFF;

	if (ioctl(fd, DMX_SET_FILTER, &sctFilterParams) < 0)  
	{
		fprintf(stderr, "couldn't set filter: %m\n", errno);
		exit (1);
	}
}

int get_epg(unsigned char *buffer,unsigned int pid,unsigned int table_id)
{
	int fd;
	int n;
	if((fd = open("/dev/dvb/adapter0/demux0",O_RDWR)) < 0)
	{
		fprintf(stderr,"DEMUX DEVICE: %m\n",errno);
		return 0;
	}

	SetFiltSection (fd,pid,table_id);
	n = read(fd,buffer,4096);
	if (n <= 0)
	{
		fprintf(stderr,"Error reading epg: %m\n",errno);
		return 0;
	}

	ioctl(fd, DMX_STOP);
	close (fd);
	return n;
}

int main(void) 
{
	int fd;
	int n;
	int i=0;
	unsigned char *buffer=new unsigned char[4097];
	unsigned char *sb=buffer;

	while(true)
	{
		buffer=sb;
		n=get_epg(buffer,0x12,0x4e);
		printf("%d: %d Bytes\n",++i,n);
		fflush(stderr);
		fflush(stdout);
	}

	return 0;
}