]> sigrok.org Git - sigrok-cli.git/blobdiff - decode.c
show: Format channel output when no channel is available
[sigrok-cli.git] / decode.c
index 2935286f4d5ef92d5acce0894cbed98bfece84cc..4ddf34afbbaf00db414a041f4ef2e61ddc27bc0f 100644 (file)
--- a/decode.c
+++ b/decode.c
@@ -29,6 +29,8 @@ static GHashTable *pd_meta_visible = NULL;
 static GHashTable *pd_binary_visible = NULL;
 static GHashTable *pd_channel_maps = NULL;
 
+uint64_t pd_samplerate = 0;
+
 extern struct srd_session *srd_sess;
 
 static int opts_to_gvar(struct srd_decoder *dec, GHashTable *hash,
@@ -54,8 +56,9 @@ static int opts_to_gvar(struct srd_decoder *dec, GHashTable *hash,
                if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_STRING)) {
                        gvar = g_variant_new_string(val_str);
                } else if (g_variant_is_of_type(o->def, G_VARIANT_TYPE_INT64)) {
+                       conv = NULL;
                        val_int = strtoll(val_str, &conv, 0);
-                       if (!conv || conv == val_str) {
+                       if (!conv || conv == val_str || *conv) {
                                g_critical("Protocol decoder '%s' option '%s' "
                                                "requires a number.", dec->name, o->id);
                                ret = FALSE;
@@ -136,7 +139,7 @@ static int register_pd(char *opt_pds, char *opt_pd_annotations)
 
        pdtokens = g_strsplit(opt_pds, ",", 0);
        for (pdtok = pdtokens; *pdtok; pdtok++) {
-               if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE))) {
+               if (!(pd_opthash = parse_generic_arg(*pdtok, TRUE, NULL))) {
                        g_critical("Invalid protocol decoder option '%s'.", *pdtok);
                        break;
                }
@@ -270,6 +273,11 @@ static void map_pd_inst_channels(void *key, void *value, void *user_data)
 
        g_hash_table_iter_init(&iter, channel_map);
        while (g_hash_table_iter_next(&iter, &channel_id, &channel_target)) {
+               if (!channel_target) {
+                       g_printerr("cli: Channel name for \"%s\" missing.\n",
+                                  (char *)channel_id);
+                       continue;
+               }
                ch = find_channel(channel_list, channel_target);
                if (!ch) {
                        g_printerr("cli: No channel with name \"%s\" found.\n",
@@ -309,46 +317,91 @@ int setup_pd_annotations(char *opt_pd_annotations)
        struct srd_decoder *dec;
        int ann_class;
        char **pds, **pdtok, **keyval, **annlist, **ann, **ann_descr;
+       const char *dec_id;
+       const char *ann_txt;
+       const char *ann_id;
+       const struct srd_decoder_annotation_row *row_desc;
+       char **ann_diag;
 
        /* Set up custom list of PDs and annotations to show. */
        pds = g_strsplit(opt_pd_annotations, ",", 0);
        for (pdtok = pds; *pdtok && **pdtok; pdtok++) {
                keyval = g_strsplit(*pdtok, "=", 0);
-               if (!(dec = srd_decoder_get_by_id(keyval[0]))) {
-                       g_critical("Protocol decoder '%s' not found.", keyval[0]);
+               dec_id = keyval[0];
+               if (!(dec = srd_decoder_get_by_id(dec_id))) {
+                       g_critical("Protocol decoder '%s' not found.", dec_id);
+                       g_strfreev(keyval);
+                       g_strfreev(pds);
                        return 1;
                }
                if (!dec->annotations) {
-                       g_critical("Protocol decoder '%s' has no annotations.", keyval[0]);
+                       g_critical("Protocol decoder '%s' has no annotations.", dec_id);
+                       g_strfreev(keyval);
+                       g_strfreev(pds);
                        return 1;
                }
-               if (g_strv_length(keyval) == 2 && keyval[1][0] != '\0') {
-                       annlist = g_strsplit(keyval[1], ":", 0);
+               ann_txt = (g_strv_length(keyval) == 2) ? keyval[1] : NULL;
+               if (ann_txt && *ann_txt) {
+                       annlist = g_strsplit(ann_txt, ":", 0);
                        for (ann = annlist; *ann && **ann; ann++) {
+                               ann_id = *ann;
+                               g_debug("cli: Lookup decoder %s annotation %s.", dec_id, ann_id);
+                               /* Lookup annotation class. */
                                ann_class = 0;
                                for (l = dec->annotations; l; l = l->next, ann_class++) {
                                        ann_descr = l->data;
-                                       if (!canon_cmp(ann_descr[0], *ann))
+                                       if (!canon_cmp(ann_descr[0], ann_id))
                                                /* Found it. */
                                                break;
                                }
-                               if (!l) {
-                                       g_critical("Annotation '%s' not found "
-                                                       "for protocol decoder '%s'.", *ann, keyval[0]);
-                                       return 1;
+                               if (l) {
+                                       l_ann = g_hash_table_lookup(pd_ann_visible, dec_id);
+                                       l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
+                                       g_hash_table_replace(pd_ann_visible, g_strdup(dec_id), l_ann);
+                                       g_debug("cli: Showing protocol decoder %s annotation "
+                                                       "class %d (%s).", dec_id, ann_class, ann_descr[0]);
+                                       continue;
                                }
-                               l_ann = g_hash_table_lookup(pd_ann_visible, keyval[0]);
-                               l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
-                               g_hash_table_replace(pd_ann_visible, g_strdup(keyval[0]), l_ann);
-                               g_debug("cli: Showing protocol decoder %s annotation "
-                                               "class %d (%s).", keyval[0], ann_class, ann_descr[0]);
+                               /* Lookup annotation row. */
+                               for (l = dec->annotation_rows; l; l = l->next) {
+                                       row_desc = l->data;
+                                       if (!canon_cmp(row_desc->id, ann_id))
+                                               break;
+                               }
+                               if (l) {
+                                       g_debug("cli: Showing decoder %s annotation row %s (%s).",
+                                               dec_id, row_desc->id, row_desc->desc);
+                                       l_ann = g_hash_table_lookup(pd_ann_visible, dec_id);
+                                       for (l = row_desc->ann_classes; l; l = l->next) {
+                                               /*
+                                                * This could just be:
+                                                *   l_ann = g_slist_append(l_ann, l->data);
+                                                * But we are explicit for readability
+                                                * and to access details for diagnostics.
+                                                */
+                                               ann_class = GPOINTER_TO_INT(l->data);
+                                               l_ann = g_slist_append(l_ann, GINT_TO_POINTER(ann_class));
+                                               ann_diag = g_slist_nth_data(dec->annotations, ann_class);
+                                               g_debug("cli: Adding class %d/%s from row %s.",
+                                                       ann_class, ann_diag[0], row_desc->id);
+                                       }
+                                       g_hash_table_replace(pd_ann_visible, g_strdup(dec_id), l_ann);
+                                       continue;
+                               }
+                               /* No match found. */
+                               g_critical("Annotation '%s' not found "
+                                               "for protocol decoder '%s'.", ann_id, dec_id);
+                               g_strfreev(keyval);
+                               g_strfreev(pds);
+                               return 1;
                        }
                } else {
                        /* No class specified: show all of them. */
-                               g_hash_table_insert(pd_ann_visible, g_strdup(keyval[0]),
-                                               g_slist_append(NULL, GINT_TO_POINTER(-1)));
+                       ann_class = -1;
+                       l_ann = g_slist_append(NULL, GINT_TO_POINTER(ann_class));
+                       g_hash_table_insert(pd_ann_visible, g_strdup(dec_id), l_ann);
                        g_debug("cli: Showing all annotation classes for protocol "
-                                       "decoder %s.", keyval[0]);
+                                       "decoder %s.", dec_id);
                }
                g_strfreev(keyval);
        }
@@ -427,6 +480,147 @@ int setup_pd_binary(char *opt_pd_binary)
        return 0;
 }
 
+/*
+ * Balance JSON object and array parentheses, and separate array items.
+ * Somewhat convoluted API to re-use the routine for individual items as
+ * well as the surrounding array and object, including deferred start of
+ * the output and late flush (and to keep the state strictly local to the
+ * routine). Some additional complexity due to JSON's inability to handle
+ * a trailing comma at the last item. Code phrased such that text literals
+ * are kept in their order of appearance in the output (where possible).
+ */
+static void jsontrace_open_close(gboolean is_close_req,
+       gboolean open_item, gboolean close_item)
+{
+       static gboolean is_file_open;
+       static gboolean is_item_open;
+
+       if (is_close_req && is_item_open)
+               close_item = TRUE;
+
+       /* Automatic file header, and array item separation. */
+       if (open_item) {
+               if (!is_file_open)
+                       printf("{\"traceEvents\": [\n");
+               if (is_item_open) {
+                       printf("}");
+                       is_item_open = FALSE;
+               }
+               if (is_file_open) {
+                       printf(",\n");
+               }
+               is_file_open = TRUE;
+       }
+
+       /* Array item open/append/close. */
+       if (open_item) {
+               printf("{");
+               is_item_open = TRUE;
+       }
+       if (!open_item && !close_item && !is_close_req) {
+               printf(", ");
+               is_item_open = TRUE;
+       }
+       if (close_item) {
+               printf("}");
+               is_item_open = FALSE;
+       }
+
+       /* Automatic file footer on shutdown. */
+       if (is_close_req && is_file_open) {
+               printf("\n");
+               printf("]}\n");
+       }
+       if (is_close_req)
+               is_file_open = FALSE;
+
+       /* Flush at end of lines, or end of file. */
+       if (close_item || is_close_req)
+               fflush(stdout);
+}
+
+/* Convert uint64 sample number to double timestamp in microseconds. */
+static double jsontrace_ts_usec(uint64_t snum)
+{
+       double ts_usec;
+
+       ts_usec = snum;
+       ts_usec *= 1e6;
+       ts_usec /= pd_samplerate;
+       return ts_usec;
+}
+
+/* Emit two Google Trace Events (JSON) for one PD annotation (ss, es). */
+static void jsontrace_annotation(struct srd_decoder *dec,
+       struct srd_proto_data_annotation *pda, struct srd_proto_data *pdata)
+{
+       char *row_text;
+       GSList *lrow, *lcls;
+       struct srd_decoder_annotation_row *row;
+       int cls;
+       char **ann_descr;
+
+       /*
+        * Search for an annotation row for this index, or use the
+        * annotation's descriptor.
+        */
+       row_text = NULL;
+       if (dec->annotation_rows) {
+               for (lrow = dec->annotation_rows; lrow; lrow = lrow->next) {
+                       row = lrow->data;
+                       for (lcls = row->ann_classes; lcls; lcls = lcls->next) {
+                               cls = GPOINTER_TO_INT(lcls->data);
+                               if (cls == pda->ann_class) {
+                                       row_text = row->desc;
+                                       break;
+                               }
+                       }
+                       if (row_text)
+                               break;
+               }
+       }
+       if (!row_text) {
+               ann_descr = g_slist_nth_data(dec->annotations, pda->ann_class);
+               row_text = ann_descr[0];
+       }
+
+       /*
+        * Emit two Google Trace Events for the start and end times.
+        * Set the 'pid' (process ID) to the decoder name to group a
+        * decoder's annotations. Set the 'tid' (thread ID) to the
+        * annotation row's description. The 'ts' (timestamp) is in
+        * microseconds. Set 'name' to the longest annotation text.
+        *
+        * BEWARE of the unfortunate JSON format limitation, which
+        * clutters data output calls with format helper calls.
+        * TODO Want to introduce a cJSON dependency to delegate the
+        * construction of output text?
+        */
+       jsontrace_open_close(FALSE, TRUE, FALSE);
+       printf("\"%s\": \"%s\"", "ph", "B");
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": %lf", "ts", jsontrace_ts_usec(pdata->start_sample));
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "pid", pdata->pdo->proto_id);
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "tid", row_text);
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "name", pda->ann_text[0]);
+
+       jsontrace_open_close(FALSE, TRUE, FALSE);
+       printf("\"%s\": \"%s\"", "ph", "E");
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": %lf", "ts", jsontrace_ts_usec(pdata->end_sample));
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "pid", pdata->pdo->proto_id);
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "tid", row_text);
+       jsontrace_open_close(FALSE, FALSE, FALSE);
+       printf("\"%s\": \"%s\"", "name", pda->ann_text[0]);
+
+       jsontrace_open_close(FALSE, FALSE, TRUE);
+}
+
 void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
 {
        struct srd_decoder *dec;
@@ -461,6 +655,12 @@ void show_pd_annotations(struct srd_proto_data *pdata, void *cb_data)
        if (!show_ann)
                return;
 
+       /* Google Trace Events are rather special. Use a separate code path. */
+       if (opt_pd_jsontrace) {
+               jsontrace_annotation(dec, pda, pdata);
+               return;
+       }
+
        /*
         * Determine which fields of the annotation to display. Inspect
         * user specified options as well as the verbosity of the log level:
@@ -548,4 +748,16 @@ void show_pd_binary(struct srd_proto_data *pdata, void *cb_data)
        fwrite(pdb->data, pdb->size, 1, stdout);
        fflush(stdout);
 }
+
+void show_pd_prepare(void)
+{
+       if (opt_pd_jsontrace)
+               jsontrace_open_close(TRUE, FALSE, FALSE);
+}
+
+void show_pd_close(void)
+{
+       if (opt_pd_jsontrace)
+               jsontrace_open_close(TRUE, FALSE, FALSE);
+}
 #endif