From 804b5c3b3abbac7b95d79bf84fabbb78d94e2c39 Mon Sep 17 00:00:00 2001
From: cbdev <cb@cbcdn.com>
Date: Wed, 7 Jun 2017 23:42:51 +0200
Subject: ArtNet input

---
 artnet.c    | 40 +++++++++++++++++++++++++++++++++++-----
 artnet.h    | 16 ++++------------
 monster.cfg |  9 +++++----
 3 files changed, 44 insertions(+), 21 deletions(-)

diff --git a/artnet.c b/artnet.c
index 80db7f3..599a6c4 100644
--- a/artnet.c
+++ b/artnet.c
@@ -199,7 +199,7 @@ static channel* artnet_channel(instance* instance, char* spec){
 		fprintf(stderr, "Invalid ArtNet channel %s\n", spec);
 		return NULL;
 	}
-	return mm_channel(instance, channel, 1);
+	return mm_channel(instance, channel - 1, 1);
 }
 
 static int artnet_set(instance* inst, size_t num, channel** c, channel_value* v){
@@ -222,7 +222,7 @@ static int artnet_set(instance* inst, size_t num, channel** c, channel_value* v)
 
 	if(mark){
 		//output frame
-		artnet_output_pkt frame = {
+		artnet_pkt frame = {
 			.magic = {'A', 'r', 't', '-', 'N', 'e', 't', 0x00},
 			.opcode = htobe16(OpDmx),
 			.version = htobe16(ARTNET_VERSION),
@@ -244,9 +244,17 @@ static int artnet_set(instance* inst, size_t num, channel** c, channel_value* v)
 }
 
 static int artnet_handle(size_t num, managed_fd* fds){
-	size_t u;
+	size_t u, p;
 	ssize_t bytes_read;
 	char recv_buf[ARTNET_RECV_BUF];
+	artnet_instance_id inst_id = {
+		.label = 0
+	};
+	instance* inst = NULL;
+	channel* chan = NULL;
+	channel_value val;
+	artnet_instance_data* data;
+	artnet_pkt* frame = (artnet_pkt*) recv_buf;
 	if(!num){
 		//early exit
 		return 0;
@@ -255,8 +263,30 @@ static int artnet_handle(size_t num, managed_fd* fds){
 	for(u = 0; u < num; u++){
 		do{
 			bytes_read = recv(fds[u].fd, recv_buf, sizeof(recv_buf), 0);
-			if(bytes_read > sizeof(artnet_header)){
-				fprintf(stderr, "Possible artnet data\n");
+			if(bytes_read > sizeof(artnet_hdr)){
+				if(!memcmp(frame->magic, "Art-Net\0", 8) && be16toh(frame->opcode) == OpDmx){
+					//find matching instance
+					inst_id.fields.net = frame->net;
+					inst_id.fields.uni = frame->universe;
+					inst = mm_instance_find(BACKEND_NAME, inst_id.label);
+					if(inst){
+						data = (artnet_instance_data*) inst->impl;
+
+						//read data, notify of changes
+						for(p = 0; p < be16toh(frame->length); p++){
+							if(frame->data[p] != data->data.in[p]){
+								data->data.in[p] = frame->data[p];
+								chan = mm_channel(inst, p, 0);
+								val.raw.u64 = frame->data[p];
+								val.normalised = (double)frame->data[p] / 255.0;
+								if(chan && mm_channel_event(chan, val)){
+									fprintf(stderr, "Failed to push ArtNet channel event to core\n");
+									return 1;
+								}
+							}
+						}
+					}
+				}
 			}
 		} while(bytes_read > 0);
 
diff --git a/artnet.h b/artnet.h
index fa8d16e..dc90e19 100644
--- a/artnet.h
+++ b/artnet.h
@@ -51,21 +51,13 @@ enum {
 	mark = 2
 };
 
-typedef struct /*_artnet_pkt_header*/ {
+typedef struct /*_artnet_hdr*/ {
 	uint8_t magic[8];
 	uint16_t opcode;
 	uint16_t version;
-} artnet_header;
+} artnet_hdr;
 
-typedef struct /*_artnet_input_pkt*/ {
-	uint8_t sequence;
-	uint8_t port;
-	uint8_t universe;
-	uint8_t net;
-	uint16_t length;
-} artnet_input_pkt;
-
-typedef struct /*_artnet_output_pkt*/ {
+typedef struct /*_artnet_pkt*/ {
 	uint8_t magic[8];
 	uint16_t opcode;
 	uint16_t version;
@@ -75,7 +67,7 @@ typedef struct /*_artnet_output_pkt*/ {
 	uint8_t net;
 	uint16_t length;
 	uint8_t data[512];
-} artnet_output_pkt;
+} artnet_pkt;
 
 enum artnet_pkt_opcode {
 	OpDmx = 0x0050
diff --git a/monster.cfg b/monster.cfg
index 561649a..128efcd 100644
--- a/monster.cfg
+++ b/monster.cfg
@@ -2,7 +2,7 @@
 name = MIDIMonster
 
 [backend artnet]
-bind = 127.0.0.1 6454
+bind = * 6454
 net = 0
 
 ;[backend osc]
@@ -18,8 +18,8 @@ write = BCF
 [midi xlate]
 
 [artnet net1]
-net = 1
-uni = 1
+net = 0
+uni = 0
 output = true
 
 [map]
@@ -27,7 +27,8 @@ bcf.cc0.81 = lc1.cc0.1
 lc1.cc0.1 = bcf.cc0.81
 bcf.cc0.82 = lc1.note0.9
 net1.15 = bcf.cc0.82
-;net1.256 = lc1.note0.9
+bcf.cc0.1 = net1.1
+bcf.cc0.2 = net1.3
 ;net1.257 = bcf.cc0.81
 ;net1.231 = foo.1
 ;net1.255 = lc1.cc0.1
-- 
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