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

[nuko-mail]

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;
}