srd: don't load all protocol decoders unless we really need to.

diff --git a/sigrok-cli.c b/sigrok-cli.c
index 780c3eb1f9ea36562458b3254e9cab6c4339d9f7..505f10e4f2ebd461a50fea41ec1d16f1639a92ee 100644 (file)
--- a/sigrok-cli.c
+++ b/sigrok-cli.c
@@ -93,6 +93,7 @@ static void show_version(void)
        int i;
 
        printf("sigrok-cli %s\n\n", VERSION);
+
        printf("Supported hardware drivers:\n");
        plugins = sr_hwplugins_list();
        for (p = plugins; p; p = p->next) {
@@ -113,17 +114,17 @@ static void show_version(void)
                printf("  %-20s %s\n", outputs[i]->id, outputs[i]->description);
        printf("\n");
 
-       /* TODO: Error handling. */
-       srd_init(NULL);
-
-       printf("Supported protocol decoders:\n");
-       for (l = srd_list_decoders(); l; l = l->next) {
-               dec = l->data;
-               printf("  %-20s %s\n", dec->id, dec->longname);
+       if (srd_init(NULL) == SRD_OK) {
+               printf("Supported protocol decoders:\n");
+               srd_load_all_decoders();
+               for (l = srd_list_decoders(); l; l = l->next) {
+                       dec = l->data;
+                       printf("  %-20s %s\n", dec->id, dec->longname);
+               }
+               srd_exit();
        }
        printf("\n");
 
-       srd_exit();
 }
 
 static void print_device_line(const struct sr_device *device)
@@ -484,8 +485,12 @@ static int register_pds(struct sr_device *device, const char *pdstring)
 
                pd_name = g_strdup(g_hash_table_lookup(pd_opthash, "sigrok_key"));
                g_hash_table_remove(pd_opthash, "sigrok_key");
+               if (srd_load_decoder(pd_name) != SRD_OK) {
+                       fprintf(stderr, "Failed to load protocol decoder %s\n", pd_name);
+                       goto err_out;
+               }
                if (!(di = srd_inst_new(pd_name, pd_opthash))) {
-                       fprintf(stderr, "Failed to instantiate PD %s\n", pd_name);
+                       fprintf(stderr, "Failed to instantiate protocol decoder %s\n", pd_name);
                        goto err_out;
                }
                g_datalist_set_data(&pd_ann_visible, di->inst_id, pd_name);