clock: use freq field
[babeltrace.git] / formats / ctf / ctf.c
index f1c0de478ba7f5cc60a1c9e0ffa99555136eab49..80bd37869ed897f947c1b99e3f871b3d93d9692d 100644 (file)
@@ -107,6 +107,9 @@ struct format ctf_format = {
        .close_trace = ctf_close_trace,
 };
 
+/*
+ * Update stream current timestamp, keep at clock frequency.
+ */
 static
 void ctf_update_timestamp(struct ctf_stream *stream,
                          struct definition_integer *integer_definition)
@@ -134,6 +137,10 @@ void ctf_update_timestamp(struct ctf_stream *stream,
        stream->timestamp = updateval;
 }
 
+/*
+ * Print timestamp, rescaling clock frequency to nanoseconds and
+ * applying offsets as needed (unix time).
+ */
 void ctf_print_timestamp(FILE *fp,
                        struct ctf_stream *stream,
                        uint64_t timestamp)
@@ -143,7 +150,12 @@ void ctf_print_timestamp(FILE *fp,
        struct trace_collection *tc = trace->collection;
        uint64_t tc_offset = tc->single_clock_offset_avg;
 
-       ts_nsec = timestamp;
+       if (stream->current_clock->freq == 1000000000ULL) {
+               ts_nsec = timestamp;
+       } else {
+               ts_nsec = (uint64_t) ((double) timestamp * 1000000000.0
+                               / (double) stream->current_clock->freq);
+       }
 
        /* Add offsets */
        if (!opt_clock_raw) {
@@ -1249,6 +1261,10 @@ int ctf_open_file_stream_read(struct ctf_trace *td, const char *path, int flags,
        ret = create_trace_definitions(td, &file_stream->parent);
        if (ret)
                goto error_def;
+       /*
+        * For now, only a single slock is supported.
+        */
+       file_stream->parent.current_clock = td->single_clock;
        ret = create_stream_packet_index(td, file_stream);
        if (ret)
                goto error_index;
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