handle meta packets, specifically SR_HWCAP_SAMPLERATE

It's actually unused, but a good example of how to handle these.

diff --git a/sigrok-cli.c b/sigrok-cli.c
index 9d870ab9662aa38d62e2cc87e35aebc5a73bca11..622b5e7a6e06d5dccb6bd3ef16cd7983c916f874 100644 (file)
--- a/sigrok-cli.c
+++ b/sigrok-cli.c
@@ -568,8 +568,10 @@ static GArray *get_enabled_logic_probes(const struct sr_dev_inst *sdi)
 static void datafeed_in(const struct sr_dev_inst *sdi,
                const struct sr_datafeed_packet *packet)
 {
+       const struct sr_datafeed_meta *meta;
        const struct sr_datafeed_logic *logic;
        const struct sr_datafeed_analog *analog;
+       struct sr_config *src;
        static struct sr_output *o = NULL;
        static GArray *logic_probelist = NULL;
        static uint64_t received_samples = 0;
@@ -580,6 +582,7 @@ static void datafeed_in(const struct sr_dev_inst *sdi,
        uint64_t *samplerate, output_len, filter_out_len;
        uint8_t *output_buf, *filter_out;
        GString *out;
+       GSList *l;
 
        /* If the first packet to come in isn't a header, don't even try. */
        if (packet->type != SR_DF_HEADER && o == NULL)
@@ -676,6 +679,23 @@ static void datafeed_in(const struct sr_dev_inst *sdi,
                o = NULL;
                break;
 
+       case SR_DF_META:
+               g_debug("cli: received SR_DF_META");
+               meta = packet->payload;
+               for (l = meta->config; l; l = l->next) {
+                       src = l->data;
+                       switch (src->key) {
+                       case SR_HWCAP_SAMPLERATE:
+                               samplerate = (uint64_t *)src->value;
+                               g_debug("cli: got samplerate %"PRIu64, *samplerate);
+                               break;
+                       default:
+                               /* Unknown metadata is not an error. */
+                               break;
+                       }
+               }
+               break;
+
        case SR_DF_TRIGGER:
                g_debug("cli: received SR_DF_TRIGGER");
                if (o->format->event)