Add analog output module to default output.

The default output module is bits, which only handles logic data.
When a user queries a device which outputs analog data, this results
in no output at all, which often confuses new users.

diff --git a/session.c b/session.c
index 5742eed1e69857730f51cf2649d59bdedff33676..e8c52d549910de4f0d78a9316229caed744953d5 100644 (file)
--- a/session.c
+++ b/session.c
@@ -23,7 +23,6 @@
 #include <string.h>
 #include <stdlib.h>
 
-static struct sr_output_format *output_format = NULL;
 static int default_output_format = FALSE;
 static uint64_t limit_samples = 0;
 static uint64_t limit_frames = 0;
@@ -72,12 +71,28 @@ static int set_limit_time(const struct sr_dev_inst *sdi)
        return SR_OK;
 }
 
+struct sr_output_format *find_output_module(char *name)
+{
+       struct sr_output_format **outputs, *omod;
+       int i;
+
+       omod = NULL;
+       outputs = sr_output_list();
+       for (i = 0; outputs[i]; i++) {
+               if (!strcmp(outputs[i]->id, name)) {
+                       omod = outputs[i];
+                       break;
+               }
+       }
+
+       return omod;
+}
+
 struct sr_output *setup_output_format(const struct sr_dev_inst *sdi)
 {
+       struct sr_output_format *omod;
        GHashTable *fmtargs;
        struct sr_output *o;
-       struct sr_output_format **outputs;
-       int i;
        char *fmtspec;
 
        if (opt_output_format && !strcmp(opt_output_format, "sigrok")) {
@@ -99,17 +114,10 @@ struct sr_output *setup_output_format(const struct sr_dev_inst *sdi)
        fmtspec = g_hash_table_lookup(fmtargs, "sigrok_key");
        if (!fmtspec)
                g_critical("Invalid output format.");
-       outputs = sr_output_list();
-       for (i = 0; outputs[i]; i++) {
-               if (strcmp(outputs[i]->id, fmtspec))
-                       continue;
-               g_hash_table_remove(fmtargs, "sigrok_key");
-               output_format = outputs[i];
-               break;
-       }
-       if (!output_format)
-               g_critical("Invalid output format '%s'.", opt_output_format);
-       o = sr_output_new(output_format, fmtargs, sdi);
+       if (!(omod = find_output_module(fmtspec)))
+               g_critical("Unknown output format '%s'.", fmtspec);
+       g_hash_table_remove(fmtargs, "sigrok_key");
+       o = sr_output_new(omod, fmtargs, sdi);
        g_hash_table_destroy(fmtargs);
 
        return o;
@@ -125,6 +133,7 @@ void datafeed_in(const struct sr_dev_inst *sdi,
        struct sr_config *src;
        struct sr_channel *ch;
        static struct sr_output *o = NULL;
+       static struct sr_output *oa = NULL;
        static uint64_t rcvd_samples_logic = 0;
        static uint64_t rcvd_samples_analog = 0;
        static uint64_t samplerate = 0;
@@ -148,6 +157,9 @@ void datafeed_in(const struct sr_dev_inst *sdi,
                g_debug("cli: Received SR_DF_HEADER.");
                o = setup_output_format(sdi);
 
+               /* Set up backup analog output module. */
+               oa = sr_output_new(find_output_module("analog"), NULL, sdi);
+
                /* Prepare non-stdout output. */
                outfile = stdout;
                if (opt_output_file) {
@@ -292,10 +304,19 @@ void datafeed_in(const struct sr_dev_inst *sdi,
        }
 
        if (o && outfile && !opt_pds) {
-               if (sr_output_send(o, packet, &out) == SR_OK && out) {
-                       fwrite(out->str, 1, out->len, outfile);
-                       fflush(outfile);
-                       g_string_free(out, TRUE);
+               if (sr_output_send(o, packet, &out) == SR_OK) {
+                       if (!out || (out->len == 0 && default_output_format
+                                       && packet->type == SR_DF_ANALOG)) {
+                               /* The user didn't specify an output module,
+                                * but needs to see this analog data. */
+                               sr_output_send(oa, packet, &out);
+                       }
+                       if (out && out->len > 0) {
+                               fwrite(out->str, 1, out->len, outfile);
+                               fflush(outfile);
+                       }
+                       if (out)
+                               g_string_free(out, TRUE);
                }
        }
 
@@ -308,6 +329,9 @@ void datafeed_in(const struct sr_dev_inst *sdi,
                        sr_output_free(o);
                o = NULL;
 
+               sr_output_free(oa);
+               oa = NULL;
+
                if (outfile && outfile != stdout)
                        fclose(outfile);