cras_trace: fix floop related traces

It's for debugging floop overrun issue.
It only support logs for One pair of floop device.

BUG=b:362679648
TEST=Record perfetto trace and ensure block size matches input/output
side

Change-Id: Ie6ae49346d530979a872db0e392a9ef1268ec421
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/adhd/+/5901364
Reviewed-by: Judy Hsiao <judyhsiao@google.com>
Commit-Queue: Judy Hsiao <judyhsiao@google.com>
Tested-by: chromeos-cop-builder@chromeos-cop.iam.gserviceaccount.com <chromeos-cop-builder@chromeos-cop.iam.gserviceaccount.com>
Auto-Submit: Terry Cheong <htcheong@chromium.org>
Tested-by: Terry Cheong <htcheong@chromium.org>

cras/server/cras_trace.c

@@ -55,13 +55,13 @@ void cras_trace_frames(enum CRAS_NODE_TYPE type, unsigned int nframes) {
       TRACE_COUNTER(audio, CRAS_SPK_WRITE_FRAMES, nframes);
       break;
     case CRAS_NODE_TYPE_FLOOP:
-      TRACE_COUNTER(audio, CRAS_FLOOP_OUT_WRITE_FRAMES, nframes);
+      TRACE_COUNTER(audio, CRAS_FLOOP_IN_READ_FRAMES, nframes);
       break;
     case CRAS_NODE_TYPE_MIC:
       TRACE_COUNTER(audio, CRAS_INTERNAL_MIC_READ_FRAMES, nframes);
       break;
     case CRAS_NODE_TYPE_FLOOP_INTERNAL:
-      TRACE_COUNTER(audio, CRAS_FLOOP_IN_READ_FRAMES, nframes);
+      TRACE_COUNTER(audio, CRAS_FLOOP_OUT_WRITE_FRAMES, nframes);
       break;
     default:
       break;
@@ -80,4 +80,4 @@ void cras_trace_overrun(enum CRAS_NODE_TYPE type,
   char event[50];
   snprintf(event, 50, "%s_UNDERRUN", cras_node_type_to_str(type, position));
   TRACE_INSTANT(audio, event);
-}
+}