+
+ if (fmtopts)
+ g_hash_table_destroy(fmtopts);
+ g_hash_table_destroy(fmtargs);
+
+ return o;
+}
+
+const struct sr_transform *setup_transform_module(const struct sr_dev_inst *sdi)
+{
+ const struct sr_transform_module *tmod;
+ const struct sr_option **options;
+ const struct sr_transform *t;
+ GHashTable *fmtargs, *fmtopts;
+ char *fmtspec;
+
+ fmtargs = parse_generic_arg(opt_transform_module, TRUE);
+ fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
+ if (!fmtspec)
+ g_critical("Invalid transform module.");
+ if (!(tmod = sr_transform_find(fmtspec)))
+ g_critical("Unknown transform module '%s'.", fmtspec);
+ g_hash_table_remove(fmtargs, "sigrok_key");
+ if ((options = sr_transform_options_get(tmod))) {
+ fmtopts = generic_arg_to_opt(options, fmtargs);
+ sr_transform_options_free(options);
+ } else
+ fmtopts = NULL;
+ t = sr_transform_new(tmod, fmtopts, sdi);
+ if (fmtopts)
+ g_hash_table_destroy(fmtopts);
+ g_hash_table_destroy(fmtargs);
+
+ return t;
+}
+
+/* Get the input stream's list of channels and their types, once. */
+static void props_get_channels(struct df_arg_desc *args,
+ const struct sr_dev_inst *sdi)
+{
+ struct input_stream_props *props;
+ GSList *l;
+ const struct sr_channel *ch;
+
+ if (!args)
+ return;
+ props = &args->props;
+ if (props->channels)
+ return;
+
+ props->channels = g_slist_copy(sr_dev_inst_channels_get(sdi));
+ if (!props->channels)
+ return;
+ for (l = props->channels; l; l = l->next) {
+ ch = l->data;
+ if (!ch->enabled)