fakenect: replay index in an endless loop

When the last line has been handled then the index gets closed and any
'prev' state is reset so that the next call to freenect_process_events
will re-open the index and start again from the first frame.

Since the Kinect camera doesn't normally spontaneously stop this seems
like a more natural behaviour.

Signed-off-by: Robert Bragg <robert@impossible.com>

Author: rib

fakenect/fakenect.c

@@ -157,6 +157,14 @@ static void open_index()
 	free(index_path);
 }
 
+static void close_index()
+{
+	fclose(index_fp);
+	index_fp = NULL;
+	record_prev_time = 0;
+	playback_prev_time = 0;
+}
+
 static char *skip_line(char *str)
 {
 	char *out = strchr(str, '\n');
@@ -211,8 +219,10 @@ int freenect_process_events(freenect_context *ctx)
 	double record_cur_time;
 	unsigned int timestamp, data_size;
 	char *data = NULL;
-	if (parse_line(&type, &record_cur_time, &timestamp, &data_size, &data))
-		return -1;
+	if (parse_line(&type, &record_cur_time, &timestamp, &data_size, &data)) {
+		close_index();
+		return 0;
+	}
 	// Sleep an amount that compensates for the original and current delays
 	// playback_ is w.r.t. the current time
 	// record_ is w.r.t. the original time period during the recording