ir: add bt_ctf_trace_get_stream_class_by_id()

[babeltrace.git] / formats / ctf / ir / trace.c

diff --git a/formats/ctf/ir/trace.c b/formats/ctf/ir/trace.c
index 8ff6371b516b20babfa25731e7c67ab80bde3b00..9c3cb5072a593b0e5cde93425eda3ae5b004c6fe 100644 (file)
--- a/formats/ctf/ir/trace.c
+++ b/formats/ctf/ir/trace.c
@@ -547,6 +547,34 @@ end:
        return stream_class;
 }
 
+struct bt_ctf_stream_class *bt_ctf_trace_get_stream_class_by_id(
+               struct bt_ctf_trace *trace, uint32_t id)
+{
+       int i;
+       struct bt_ctf_stream_class *stream_class = NULL;
+
+       if (!trace) {
+               goto end;
+       }
+
+       for (i = 0; i < trace->stream_classes->len; ++i) {
+               struct bt_ctf_stream_class *stream_class_candidate;
+
+               stream_class_candidate =
+                       g_ptr_array_index(trace->stream_classes, i);
+
+               if (bt_ctf_stream_class_get_id(stream_class_candidate) ==
+                               (int64_t) id) {
+                       stream_class = stream_class_candidate;
+                       bt_ctf_get(stream_class);
+                       goto end;
+               }
+       }
+
+end:
+       return stream_class;
+}
+
 struct bt_ctf_clock *bt_ctf_trace_get_clock_by_name(
                struct bt_ctf_trace *trace, const char *name)
 {