+ id_field = bt_ctf_field_structure_get_field(event->event_header, "id");
+ if (id_field && !bt_ctf_field_is_set(id_field)) {
+ ret = set_integer_field_value(id_field,
+ (uint64_t) bt_ctf_event_class_get_id(
+ event->event_class));
+ if (ret) {
+ goto end;
+ }
+ }
+
+ timestamp_field = bt_ctf_field_structure_get_field(event->event_header,
+ "timestamp");
+ if (timestamp_field && !bt_ctf_field_is_set(timestamp_field)) {
+ struct bt_ctf_field_type *timestamp_field_type =
+ bt_ctf_field_get_type(timestamp_field);
+
+ assert(timestamp_field_type);
+ mapped_clock = bt_ctf_field_type_integer_get_mapped_clock(
+ timestamp_field_type);
+ bt_put(timestamp_field_type);
+ if (mapped_clock) {
+ /*
+ * Babeltrace 2.0 introduced a notion of per-event clock
+ * values which can be queried using a "clock" instance.
+ *
+ * However, the original CTF-Writer (BT 1.x) had a
+ * notion of per-stream clock which is sampled on
+ * a call to append an event to a stream.
+ *
+ * If the event has a clock value associated with the
+ * mapped clock, we ignore the pre-2.0 behaviour and
+ * populate the timestamp field using the clock value.
+ */
+ uint64_t timestamp = 0;
+ struct bt_ctf_clock_value *clock_value;
+
+ clock_value = bt_ctf_event_get_clock_value(event,
+ mapped_clock);
+ if (clock_value) {
+ ret = bt_ctf_clock_value_get_value(clock_value,
+ ×tamp);
+ bt_put(clock_value);
+ if (ret) {
+ goto end;
+ }
+ } else {
+ ret = bt_ctf_clock_get_value(mapped_clock,
+ ×tamp);
+ if (ret) {
+ goto end;
+ }
+ }
+
+ ret = set_integer_field_value(timestamp_field,
+ timestamp);
+ if (ret) {
+ goto end;
+ }
+ }
+ }
+end:
+ bt_put(id_field);
+ bt_put(timestamp_field);
+ bt_put(mapped_clock);
+ return ret;
+}
+
+struct bt_ctf_packet *bt_ctf_event_get_packet(struct bt_ctf_event *event)
+{
+ struct bt_ctf_packet *packet = NULL;
+
+ if (!event || !event->packet) {
+ goto end;
+ }
+
+ packet = bt_get(event->packet);
+end:
+ return packet;
+}
+
+int bt_ctf_event_set_packet(struct bt_ctf_event *event,
+ struct bt_ctf_packet *packet)
+{
+ struct bt_ctf_stream_class *event_stream_class = NULL;
+ struct bt_ctf_stream_class *packet_stream_class = NULL;
+ struct bt_ctf_stream *stream = NULL;
+ int ret = 0;
+
+ if (!event || !packet || event->frozen) {
+ ret = -1;
+ goto end;
+ }
+
+ /*
+ * Make sure the new packet was created by this event's
+ * stream, if it is set.
+ */
+ stream = bt_ctf_event_get_stream(event);
+ if (stream) {
+ if (packet->stream != stream) {
+ ret = -1;
+ goto end;
+ }
+ } else {
+ event_stream_class =
+ bt_ctf_event_class_get_stream_class(event->event_class);
+ packet_stream_class =
+ bt_ctf_stream_get_class(packet->stream);
+
+ assert(event_stream_class);
+ assert(packet_stream_class);
+
+ if (event_stream_class != packet_stream_class) {
+ ret = -1;
+ goto end;
+ }
+ }
+
+ bt_get(packet);
+ BT_MOVE(event->packet, packet);
+