From: Bert Vermeulen <redacted>
Date: Sun, 20 Jan 2013 14:29:28 +0000 (+0100)
Subject: handle meta packets, specifically SR_HWCAP_SAMPLERATE
X-Git-Tag: sigrok-cli-0.4.0~54
X-Git-Url: https://sigrok.org/gitweb/?p=sigrok-cli.git;a=commitdiff_plain;h=7e97afa0d99bf4961f1336122fc595cb4bd55e84

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 9d870ab..622b5e7 100644
--- 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)