Make the time stamp resolution per-packet.

Pcap-ng files don't have a per-file time stamp resolution, they have a
per-interface time stamp resolution.  Add new time stamp resolution
types of "unknown" and "per-packet", add the time stamp resolution to
struct wtap_pkthdr, have the libwiretap core initialize it to the
per-file time stamp resolution, and have pcap-ng do the same thing with
the resolution that it does with the packet encapsulation.

Get rid of the TS_PREC_AUTO_XXX values; just have TS_PREC_AUTO, which
means "use the packet's resolution to determine how many significant
digits to display".  Rename all the WTAP_FILE_TSPREC_XXX values to
WTAP_TSPREC_XXX, as they're also used for per-packet values.

Change-Id: If9fd8f799b19836a5104aaa0870a951498886c69
Reviewed-on: https://code.wireshark.org/review/4349
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 0 insertions, 34 deletions

diff --git a/file.c b/file.c
index f343028240..e948a48a83 100644
--- a/file.c
+++ b/file.c
@@ -217,46 +217,12 @@ void
 cf_timestamp_auto_precision(capture_file *cf)
 {
   int i;
-  int prec = timestamp_get_precision();
-
 
   /* don't try to get the file's precision if none is opened */
   if (cf->state == FILE_CLOSED) {
     return;
   }
 
-  /* if we are in auto mode, set precision of current file */
-  if (prec == TS_PREC_AUTO ||
-     prec == TS_PREC_AUTO_SEC ||
-     prec == TS_PREC_AUTO_DSEC ||
-     prec == TS_PREC_AUTO_CSEC ||
-     prec == TS_PREC_AUTO_MSEC ||
-     prec == TS_PREC_AUTO_USEC ||
-     prec == TS_PREC_AUTO_NSEC)
-  {
-    switch(wtap_file_tsprecision(cf->wth)) {
-    case(WTAP_FILE_TSPREC_SEC):
-      timestamp_set_precision(TS_PREC_AUTO_SEC);
-      break;
-    case(WTAP_FILE_TSPREC_DSEC):
-      timestamp_set_precision(TS_PREC_AUTO_DSEC);
-      break;
-    case(WTAP_FILE_TSPREC_CSEC):
-      timestamp_set_precision(TS_PREC_AUTO_CSEC);
-      break;
-    case(WTAP_FILE_TSPREC_MSEC):
-      timestamp_set_precision(TS_PREC_AUTO_MSEC);
-      break;
-    case(WTAP_FILE_TSPREC_USEC):
-      timestamp_set_precision(TS_PREC_AUTO_USEC);
-      break;
-    case(WTAP_FILE_TSPREC_NSEC):
-      timestamp_set_precision(TS_PREC_AUTO_NSEC);
-      break;
-    default:
-      g_assert_not_reached();
-    }
-  }
   /* Set the column widths of those columns that show the time in
      "command-line-specified" format. */
   for (i = 0; i < cf->cinfo.num_cols; i++) {