sr: better error reporting

[libsigrokdecode.git] / type_decoder.c

diff --git a/type_decoder.c b/type_decoder.c
index 86ccf02ea7fcd46a3d7626b7f8992e2695962adf..1434cf233a9f89fdf8ff2b34c9f0e5527833f6c1 100644 (file)
--- a/type_decoder.c
+++ b/type_decoder.c
@@ -22,6 +22,14 @@
 #include "config.h"
 
 
+/* This is only used for nicer srd_dbg() output. */
+char *OUTPUT_TYPES[] = {
+       "OUTPUT_ANN",
+       "OUTPUT_PROTO",
+       "OUTPUT_BINARY",
+};
+
+
 static int convert_pyobj(struct srd_decoder_instance *di, PyObject *obj,
                int *ann_format, char ***ann)
 {
@@ -87,10 +95,16 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args)
        int output_id;
        void (*cb)();
 
-       if (!(di = get_di_by_decobject(self)))
+       if (!(di = get_di_by_decobject(self))) {
+               /* Shouldn't happen. */
+               srd_dbg("srd: put(): self instance not found.");
                return NULL;
+       }
 
        if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, &output_id, &data))
+               /* This throws an exception, but by returning NULL here we let python
+                * raise it. This results in a much better trace in controller.c
+                * on the decode() method call. */
                return NULL;
 
        if (!(l = g_slist_nth(di->pd_output, output_id))) {
@@ -100,6 +114,9 @@ static PyObject *Decoder_put(PyObject *self, PyObject *args)
        }
        pdo = l->data;
 
+       srd_spew("srd: instance %s put %d-%d %s %d", di->instance_id,
+                       start_sample, end_sample, OUTPUT_TYPES[output_id], output_id);
+
        if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data))))
                return NULL;
        pdata->start_sample = start_sample;
@@ -154,13 +171,12 @@ static PyObject *Decoder_add(PyObject *self, PyObject *args)
        int output_type, pdo_id;
 
        if (!(di = get_di_by_decobject(self))) {
-               srd_dbg("srd: decoder instance not found");
                PyErr_SetString(PyExc_Exception, "decoder instance not found");
                return NULL;
        }
 
        if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) {
-               catch_exception("");
+               /* Let python raise this exception. */
                return NULL;
        }