From bf928144bdaa9f330b7ec6054e330e7e3f1ff620 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Sun, 9 Jun 2019 14:27:31 +0200
Subject: Scan out DMX for real

---
 src/scanout.c | 34 ++++++++++++++++++++++++++--------
 1 file changed, 26 insertions(+), 8 deletions(-)

diff --git a/src/scanout.c b/src/scanout.c
index cbb990f..1c5823b 100644
--- a/src/scanout.c
+++ b/src/scanout.c
@@ -23,31 +23,49 @@
 
 #include <string.h>
 #include <stdlib.h>
-#include <ctype.h>
 #include <libsoup/soup.h>
 
 #include "nanolight.h"
 
-gboolean scanout_all(struct nanolight *nl)
+int scanout_all(struct nanolight *nl)
 {
 	SoupSession *sess;
 	SoupMessage *msg;
 	int i;
+	int dmx[512];
 	char str[8200];
 
-	strcpy(str, "u=0, d=");
+	/* Start from zero */
+	for ( i=0; i<512; i++ ) dmx[i] = 0;
+
+	/* Loop over fixtures and set values */
+	for ( i=0; i<nl->n_fixtures; i++ ) {
+		int j;
+		struct fixture *fix = &nl->fixtures[i];
+		for ( j=0; j<fix->cls->n_attrs; j++ ) {
+			int pos = fix->base_addr + fix->cls->attrs[j].addr_offset;
+			if ( fix->cls->attrs[j].props & ATTR_16BIT ) {
+				dmx[pos] = (fix->attr_vals[j] & 0xff00) >> 8;
+				dmx[pos+1] = fix->attr_vals[j] & 0xff;
+			} else {
+				dmx[pos] = fix->attr_vals[j];
+			}
+		}
+	}
+
+	/* Loop over DMX channels and prepare request */
+	strcpy(str, "u=1&d=");
 	for ( i=0; i<512; i++ ) {
 		char tmp[6];
-		snprintf(tmp, 5, "%i,", 255);
+		snprintf(tmp, 5, "%i,", dmx[i]);
 		strcat(str, tmp);
 	}
-	printf("req='%s'\n", str);
 
+	/* Send request to OLA */
 	sess = soup_session_new();
 	msg = soup_message_new("POST", "http://127.0.0.1:9090/set_dmx");
-	soup_message_set_request(msg, "text/plain", SOUP_MEMORY_TEMPORARY, str,
-	                         strlen(str));
-	
+	soup_message_set_request(msg, "application/x-www-form-urlencoded",
+	                         SOUP_MEMORY_TEMPORARY, str, strlen(str));
 	soup_session_send_message(sess, msg);
 
 	g_object_unref(msg);
-- 
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