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/sacn.h | 126 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 126 insertions(+)
 create mode 100644 backends/sacn.h

(limited to 'backends/sacn.h')

diff --git a/backends/sacn.h b/backends/sacn.h
new file mode 100644
index 0000000..e7106f7
--- /dev/null
+++ b/backends/sacn.h
@@ -0,0 +1,126 @@
+#include <sys/socket.h>
+#include "midimonster.h"
+
+int init();
+static int sacn_configure(char* option, char* value);
+static int sacn_configure_instance(instance* instance, char* option, char* value);
+static instance* sacn_instance();
+static channel* sacn_channel(instance* instance, char* spec);
+static int sacn_set(instance* inst, size_t num, channel** c, channel_value* v);
+static int sacn_handle(size_t num, managed_fd* fds);
+static int sacn_start();
+static int sacn_shutdown();
+
+#define SACN_PORT "5568"
+#define SACN_RECV_BUF 8192
+#define SACN_KEEPALIVE_INTERVAL 2000
+#define SACN_DISCOVERY_TIMEOUT 9000
+#define SACN_PDU_MAGIC "ASC-E1.17\0\0\0"
+
+#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 /*_sacn_universe_model*/ {
+	uint8_t last_priority;
+	uint8_t last_seq;
+	uint8_t in[512];
+	uint8_t out[512];
+	uint16_t map[512];
+} sacn_universe;
+
+typedef struct /*_sacn_instance_model*/ {
+	uint16_t uni;
+	uint8_t xmit_prio;
+	uint8_t cid_filter[16];
+	uint8_t filter_enabled;
+	uint8_t unicast_input;
+	struct sockaddr_storage dest_addr;
+	socklen_t dest_len;
+	sacn_universe data;
+	size_t fd_index;
+} sacn_instance_data;
+
+typedef union /*_sacn_instance_id*/ {
+	struct {
+		uint16_t fd_index;
+		uint16_t uni;
+		uint8_t pad[4];
+	} fields;
+	uint64_t label;
+} sacn_instance_id;
+
+typedef struct /*_sacn_socket*/ {
+	int fd;
+	uint8_t flags;
+	size_t universes;
+	uint16_t* universe;
+	uint64_t* last_frame;
+} sacn_fd;
+
+#pragma pack(push, 1)
+typedef struct /*_sacn_frame_root*/ {
+	uint16_t preamble_size;
+	uint16_t postamble_size;
+	uint8_t magic[12];
+	uint16_t flags;
+	uint32_t vector;
+	uint8_t sender_cid[16];
+	//framing
+	uint16_t frame_flags;
+	uint32_t frame_vector;
+} sacn_frame_root;
+
+typedef struct /*_sacn_frame_data*/ {
+	//framing
+	uint8_t source_name[64];
+	uint8_t priority;
+	uint16_t sync_addr;
+	uint8_t sequence;
+	uint8_t options;
+	uint16_t universe;
+	//dmp
+	uint16_t flags;
+	uint8_t vector;
+	uint8_t format;
+	uint16_t startcode_offset;
+	uint16_t address_increment;
+	uint16_t channels;
+	uint8_t data[513];
+} sacn_frame_data;
+
+typedef struct /*_sacn_frame_discovery*/ {
+	//framing
+	uint8_t source_name[64];
+	uint32_t reserved;
+	//universe discovery
+	uint16_t flags;
+	uint32_t vector;
+	uint8_t page;
+	uint8_t max_page;
+	uint16_t data[512];
+} sacn_frame_discovery;
+
+typedef struct /*_sacn_xmit_data*/ {
+	sacn_frame_root root;
+	sacn_frame_data data;
+} sacn_data_pdu;
+
+typedef struct /*_sacn_xmit_discovery*/ {
+	sacn_frame_root root;
+	sacn_frame_discovery data;
+} sacn_discovery_pdu;
+#pragma pack(pop)
+
+#define ROOT_E131_DATA 0x4
+#define FRAME_E131_DATA 0x2
+#define DMP_SET_PROPERTY 0x2
+
+#define ROOT_E131_EXTENDED 0x8
+#define FRAME_E131_DISCOVERY 0x2
+#define DISCOVERY_UNIVERSE_LIST 0x1
-- 
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