From 2dfc564edc0c89c4a8de7e384806aae5d593426d Mon Sep 17 00:00:00 2001
From: cbdev <cb@cbcdn.com>
Date: Fri, 2 Mar 2018 03:20:11 +0100
Subject: Move backend implementations to subdirectory

---
 backends/artnet.h | 82 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 backends/artnet.h

(limited to 'backends/artnet.h')

diff --git a/backends/artnet.h b/backends/artnet.h
new file mode 100644
index 0000000..90aedd5
--- /dev/null
+++ b/backends/artnet.h
@@ -0,0 +1,82 @@
+#include <sys/socket.h>
+#include "midimonster.h"
+
+int init();
+static int artnet_configure(char* option, char* value);
+static int artnet_configure_instance(instance* instance, char* option, char* value);
+static instance* artnet_instance();
+static channel* artnet_channel(instance* instance, char* spec);
+static int artnet_set(instance* inst, size_t num, channel** c, channel_value* v);
+static int artnet_handle(size_t num, managed_fd* fds);
+static int artnet_start();
+static int artnet_shutdown();
+
+#define ARTNET_PORT "6454"
+#define ARTNET_VERSION 14
+#define ARTNET_RECV_BUF 4096
+#define ARTNET_KEEPALIVE_INTERVAL 2000
+
+#define MAP_COARSE 0x0200
+#define MAP_FINE 0x0400
+#define MAP_SINGLE 0x0800
+#define MAP_MARK 0x1000
+#define MAPPED_CHANNEL(a) ((a) & 0x01FF)
+#define IS_ACTIVE(a) ((a) & 0xFE00)
+#define IS_WIDE(a) ((a) & (MAP_FINE | MAP_COARSE))
+#define IS_SINGLE(a) ((a) & MAP_SINGLE)
+
+typedef struct /*_artnet_universe_model*/ {
+	uint8_t seq;
+	uint8_t in[512];
+	uint8_t out[512];
+	uint16_t map[512];
+} artnet_universe;
+
+typedef struct /*_artnet_instance_model*/ {
+	uint8_t net;
+	uint8_t uni;
+	struct sockaddr_storage dest_addr;
+	socklen_t dest_len;
+	artnet_universe data;
+	size_t fd_index;
+} artnet_instance_data;
+
+typedef union /*_artnet_instance_id*/ {
+	struct {
+		uint8_t fd_index;
+		uint8_t net;
+		uint8_t uni;
+	} fields;
+	uint64_t label;
+} artnet_instance_id;
+
+typedef struct /*_artnet_fd*/ {
+	int fd;
+	size_t output_instances;
+	artnet_instance_id* output_instance;
+	uint64_t* last_frame;
+} artnet_descriptor;
+
+#pragma pack(push, 1)
+typedef struct /*_artnet_hdr*/ {
+	uint8_t magic[8];
+	uint16_t opcode;
+	uint16_t version;
+} artnet_hdr;
+
+typedef struct /*_artnet_pkt*/ {
+	uint8_t magic[8];
+	uint16_t opcode;
+	uint16_t version;
+	uint8_t sequence;
+	uint8_t port;
+	uint8_t universe;
+	uint8_t net;
+	uint16_t length;
+	uint8_t data[512];
+} artnet_pkt;
+#pragma pack(pop)
+
+enum artnet_pkt_opcode {
+	OpDmx = 0x0050
+};
-- 
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