Basic kinet backend skeleton and analysiskinet

3 files changed, 166 insertions, 2 deletions

diff --git a/backends/Makefile b/backends/Makefile
index d815f84..5628b4b 100644
--- a/backends/Makefile
+++ b/backends/Makefile
@@ -2,9 +2,9 @@
 # Backends that can only be built on Linux
 LINUX_BACKENDS = midi.so evdev.so
 # Backends that can only be built on Windows (mostly due to the .DLL extension)
-WINDOWS_BACKENDS = artnet.dll osc.dll loopback.dll sacn.dll maweb.dll winmidi.dll openpixelcontrol.dll rtpmidi.dll wininput.dll visca.dll
+WINDOWS_BACKENDS = artnet.dll osc.dll loopback.dll sacn.dll maweb.dll winmidi.dll openpixelcontrol.dll rtpmidi.dll wininput.dll visca.dll kinet.dll
 # Backends that can be built on any platform that can load .SO libraries
-BACKENDS = artnet.so osc.so loopback.so sacn.so lua.so maweb.so jack.so openpixelcontrol.so python.so rtpmidi.so visca.so
+BACKENDS = artnet.so osc.so loopback.so sacn.so lua.so maweb.so jack.so openpixelcontrol.so python.so rtpmidi.so visca.so kinet.so
 # Backends that require huge dependencies to be installed
 OPTIONAL_BACKENDS = ola.so
 # Backends that need to be built manually (but still should be included in the clean target)
@@ -39,6 +39,10 @@ artnet.so: ADDITIONAL_OBJS += $(BACKEND_LIB)
 artnet.dll: ADDITIONAL_OBJS += $(BACKEND_LIB)
 artnet.dll: LDLIBS += -lws2_32
 
+kinet.so: ADDITIONAL_OBJS += $(BACKEND_LIB)
+kinet.dll: ADDITIONAL_OBJS += $(BACKEND_LIB)
+kinet.dll: LDLIBS += -lws2_32
+
 osc.so: ADDITIONAL_OBJS += $(BACKEND_LIB)
 osc.dll: ADDITIONAL_OBJS += $(BACKEND_LIB)
 osc.dll: LDLIBS += -lws2_32
diff --git a/backends/kinet.c b/backends/kinet.c
new file mode 100644
index 0000000..df259cf
--- /dev/null
+++ b/backends/kinet.c
@@ -0,0 +1,106 @@
+#define BACKEND_NAME "kinet"
+
+/*
+ * This protocol is largely undocumented. As a result,
+ * this backend may in some cases produce unintended
+ * output artifacts.
+ *
+ * Due to lack of consistent access to compliant hardware,
+ * testing is infrequent. If you are able to provide
+ * additional feedback or testing on compatible hardware,
+ * please notify the developers.
+ */
+
+#include <string.h>
+
+#include "libmmbackend.h"
+#include "kinet.h"
+
+#define MAX_FDS 255
+
+static struct {
+	size_t fds;
+	int* fd;
+} global_cfg = {
+	0
+};
+
+/*
+ * TODO
+ *	* detect mode
+ */
+
+MM_PLUGIN_API int init(){
+	backend kinet = {
+		.name = BACKEND_NAME,
+		.conf = kinet_configure,
+		.create = kinet_instance,
+		.conf_instance = kinet_configure_instance,
+		.channel = kinet_channel,
+		.handle = kinet_set,
+		.process = kinet_handle,
+		.start = kinet_start,
+		.shutdown = kinet_shutdown
+	};
+
+	//register backend
+	if(mm_backend_register(kinet)){
+		LOG("Failed to register backend");
+		return 1;
+	}
+	return 0;
+}
+
+static int kinet_configure(char* option, char* value){
+	//TODO
+	return 0;
+}
+
+static int kinet_configure_instance(instance* inst, char* option, char* value){
+	//TODO
+	return 0;
+}
+
+static int kinet_instance(instance* inst){
+	inst->impl = calloc(1, sizeof(kinet_instance_data));
+	if(!inst->impl){
+		LOG("Failed to allocate memory");
+		return 1;
+	}
+
+	return 0;
+}
+
+static channel* kinet_channel(instance* inst, char* spec, uint8_t flags){
+	//TODO
+	return NULL;
+}
+
+static int kinet_set(instance* inst, size_t num, channel** c, channel_value* v){
+	//TODO
+	return 0;
+}
+
+static int kinet_handle(size_t num, managed_fd* fds){
+	//TODO
+	return 0;
+}
+
+static int kinet_start(size_t n, instance** inst){
+	//TODO
+	return 0;
+}
+
+static int kinet_shutdown(size_t n, instance** inst){
+	size_t u;
+	kinet_instance_data* data = NULL;
+
+	for(u = 0; u < n; u++){
+		data = (kinet_instance_data*) inst[u]->impl;
+		free(inst[u]->impl);
+		inst[u]->impl = NULL;
+	}
+
+	LOG("Backend shut down");
+	return 0;
+}
diff --git a/backends/kinet.h b/backends/kinet.h
new file mode 100644
index 0000000..a93c576
--- /dev/null
+++ b/backends/kinet.h
@@ -0,0 +1,54 @@
+#include "midimonster.h"
+
+MM_PLUGIN_API int init();
+static int kinet_configure(char* option, char* value);
+static int kinet_configure_instance(instance* inst, char* option, char* value);
+static int kinet_instance(instance* inst);
+static channel* kinet_channel(instance* inst, char* spec, uint8_t flags);
+static int kinet_set(instance* inst, size_t num, channel** c, channel_value* v);
+static int kinet_handle(size_t num, managed_fd* fds);
+static int kinet_start(size_t n, instance** inst);
+static int kinet_shutdown(size_t n, instance** inst);
+
+#define KINET_PORT "6038"
+#define KINET_MAGIC htobe32(0x0401dc4a)
+
+enum {
+	kinet_op_dmx = 0x0101, //v1
+	kinet_op_out = 0x0108 //v2
+};
+
+//As a byproduct of the sparse documentation, a lot of these
+//fields are educated guesses.
+
+#pragma pack(push, 1)
+typedef struct /*_kinet_header*/ {
+	uint8_t magic[4]; //04 01 dc 4a
+	uint16_t version; //01 00
+	uint16_t op; //08 01
+	uint32_t seq; //00 00 00 00
+	uint8_t output_port; //00 //FIXME verify this / usage?
+	uint8_t pad; //00
+	uint16_t flags; //00 00
+} kinet_frame_hdr;
+
+typedef struct /*_kinet_dmx*/ {
+	uint32_t offset;
+	uint8_t universe;
+	uint8_t startcode; //FIXME test this 
+	uint8_t data[512];
+} kinet_dmx;
+
+typedef struct /*_kinet_out*/ {
+	uint8_t port;
+	uint8_t padding;
+	uint16_t flags;
+	uint16_t length;
+	uint16_t code;
+	uint8_t data[512];
+} kinet_out;
+#pragma pack(pop)
+
+typedef struct /*_kinet_instance_data*/ {
+	size_t n;
+} kinet_instance_data;