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dddvb/apps/tscheck.c

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C
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#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <stdint.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/dvb/dmx.h>
#include <linux/dvb/frontend.h>
#include <linux/dvb/video.h>
char line_start[16] = "";
char line_end[16] = "\r";
uint32_t cc_errors = 0;
uint32_t packets = 0;
uint32_t payload_packets = 0;
uint32_t packet_errors = 0;
uint8_t cc[8192] = { 0 };
void proc_ts(int i, uint8_t *buf)
{
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uint16_t pid= 0x1fff& ((buf[1] << 8) | buf[2]);
uint8_t ccin = buf[3] & 0x1f;
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if( buf[0] == 0x47 && (buf[1] & 0x80) == 0) {
if( pid != 8191 ) {
if (ccin & 0x10) {
if( cc[pid] != 0 ) {
// TODO: 1 repetition allowed
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if ((((cc[pid] + 1) & 0x0F) != (ccin & 0x0F)) ) {
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cc_errors += 1;
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printf("%04x: %u != %u\n", pid, (cc[pid] + 1) & 0x0F, ccin & 0x0F);
}
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}
cc[pid] = ccin;
}
payload_packets += 1;
}
} else
packet_errors += 1;
if( (packets & 0x3FFF ) == 0) {
printf("%s Packets: %12u non null %12u, errors: %12u, CC errors: %12u%s",
line_start, packets, payload_packets, packet_errors, cc_errors, line_end);
fflush(stdout);
}
packets += 1;
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}
#define TSBUFSIZE (100*188)
void citest(char* n)
{
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uint8_t *buf;
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uint8_t id;
int i, nts;
int len;
int ts=open(n, O_RDONLY);
buf=(uint8_t *)malloc(TSBUFSIZE);
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while(1) {
len=read(ts, buf, TSBUFSIZE);
if (len<0) {
continue;
}
if (buf[0]!=0x47) {
read(ts, buf, 1);
continue;
}
if (len%188) { /* should not happen */
printf("blah\n");
continue;
}
nts=len/188;
for (i=0; i<nts; i++)
proc_ts(i, buf+i*188);
}
}
int main(int argc, char* argv[])
{
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if( argc < 2 )
{
printf("tscheck <file>|<device> [<display line>]\n");
exit(0);
}
if( argc > 2 )
{
int line = atoi(argv[2]);
if( line >= 0 && line < 64 )
{
snprintf(line_start,sizeof(line_start)-1,"\0337\033[%d;0H",line);
strncpy(line_end,"\0338",sizeof(line_end)-1);
}
}
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citest(argv[1]);
}