tschecker added

2025-03-01 10:35:23 +00:00 · 2020-01-21 18:36:05 +01:00
parent 5b17d32804
commit ed5f89a0c4
1 changed files with 109 additions and 0 deletions
--- a/apps/tscheck.c
+++ b/apps/tscheck.c
@@ -0,0 +1,109 @@
+#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)
+{
+  uint16_t pid=0x1fff&((buf[1]<<8)|buf[2]);
+  uint8_t ccin = buf[3] & 0x1F;
+  
+  if( buf[0] == 0x47 && (buf[1] & 0x80) == 0)
+  {
+    if( pid != 8191 )
+    {
+      if( ccin != 0 )
+      {
+        if( cc[pid] != 0 )
+        {
+          // TODO: 1 repetition allowed
+          if( ((cc[pid] + 1) & 0x0F) != (ccin & 0x0F) )  
+            cc_errors += 1;
+        }
+        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;  
+}
+
+#define TSBUFSIZE (100*188)
+
+void citest(char* n)
+{
+  uint8_t *buf;
+	uint8_t id;
+	int i, nts;
+	int len;
+	int ts=open(n, O_RDONLY);
+	buf=(uint8_t *)malloc(TSBUFSIZE);
+
+	
+	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[])
+{
+  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);
+    }
+  }
+	citest(argv[1]);
+}
+