Update ArtNet configuration syntax, add mm_timestamp API

4 files changed, 37 insertions, 8 deletions

diff --git a/README.md b/README.md
index 77dcba2..f323968 100644
--- a/README.md
+++ b/README.md
@@ -74,10 +74,10 @@ fixture control.
 
 | Option	| Example value		| Default value 	| Description		|
 |---------------|-----------------------|-----------------------|-----------------------|
-| `net`		| `0`			| `0`			| ArtNet net to use	|
-| `uni`		| `0`			| `0`			| ArtNet universe to use|
-| `dest`	| `10.2.2.2`		| none			| Destination address for sent ArtNet frames. Setting this enables the universe for output |
-| `iface`	| `1`			| `0`			| The bound address to use for data input/output |
+| `net`		| `0`			| `0`			| ArtNet `net` to use	|
+| `universe`	| `0`			| `0`			| Universe identifier	|
+| `destination`	| `10.2.2.2`		| none			| Destination address for sent ArtNet frames. Setting this enables the universe for output |
+| `interface`	| `1`			| `0`			| The bound address to use for data input/output |
 
 #### Channel specification
 
diff --git a/artnet.c b/artnet.c
index 6863861..474d0a6 100644
--- a/artnet.c
+++ b/artnet.c
@@ -209,11 +209,11 @@ static int artnet_configure_instance(instance* inst, char* option, char* value){
 		data->net = strtoul(value, NULL, 0);
 		return 0;
 	}
-	else if(!strcmp(option, "uni")){
+	else if(!strcmp(option, "uni") || !strcmp(option, "universe")){
 		data->uni = strtoul(value, NULL, 0);
 		return 0;
 	}
-	else if(!strcmp(option, "iface")){
+	else if(!strcmp(option, "iface") || !strcmp(option, "interface")){
 		data->fd_index = strtoul(value, NULL, 0);
 
 		if(data->fd_index >= artnet_fds){
@@ -222,7 +222,7 @@ static int artnet_configure_instance(instance* inst, char* option, char* value){
 		}
 		return 0;
 	}
-	else if(!strcmp(option, "dest")){
+	else if(!strcmp(option, "dest") || !strcmp(option, "destination")){
 		if(artnet_separate_hostspec(value, &host, &port)){
 			fprintf(stderr, "Not a valid ArtNet destination for instance %s\n", inst->name);
 			return 1;
diff --git a/midimonster.c b/midimonster.c
index eb5510c..87abfb1 100644
--- a/midimonster.c
+++ b/midimonster.c
@@ -3,6 +3,7 @@
 #include <sys/select.h>
 #include <unistd.h>
 #include <errno.h>
+#include <time.h>
 #include "midimonster.h"
 #include "config.h"
 #include "backend.h"
@@ -19,6 +20,7 @@ static size_t mappings = 0;
 static channel_mapping* map = NULL;
 static size_t fds = 0;
 static managed_fd* fd = NULL;
+static uint64_t global_timestamp = 0;
 
 static event_collection event_pool[2] = {
 	{0},
@@ -28,10 +30,24 @@ static event_collection* primary = event_pool;
 
 volatile static sig_atomic_t shutdown_requested = 0;
 
-void signal_handler(int signum){
+static void signal_handler(int signum){
 	shutdown_requested = 1;
 }
 
+uint64_t mm_timestamp(){
+	return global_timestamp;
+}
+
+static void update_timestamp(){
+	struct timespec current;
+	if(clock_gettime(CLOCK_MONOTONIC_COARSE, &current)){
+		fprintf(stderr, "Failed to update global timestamp, time-based processing for some backends may be impaired: %s\n", strerror(errno));
+		return;
+	}
+
+	global_timestamp = current.tv_sec * 1000 + current.tv_nsec / 1000000;
+}
+
 int mm_map_channel(channel* from, channel* to){
 	size_t u, m;
 	//find existing source mapping
@@ -277,6 +293,9 @@ int main(int argc, char** argv){
 			}
 		}
 
+		//update this iteration's timestamp
+		update_timestamp();
+
 		//run backend processing, collect events
 		DBGPF("%zu backend FDs signaled\n", n);
 		if(backends_handle(n, signaled_fds)){
diff --git a/midimonster.h b/midimonster.h
index 630399a..9f1a33e 100644
--- a/midimonster.h
+++ b/midimonster.h
@@ -187,5 +187,15 @@ int mm_channel_event(channel* c, channel_value v);
  * *i will need to be freed by the caller.
  */
 int mm_backend_instances(char* backend, size_t* n, instance*** i);
+/*
+ * Query an internal timestamp, which is updated every core iteration.
+ * This timestamp should not be used as a performance counter, but can be
+ * used for timeouting. Resolution is milliseconds.
+ */
+uint64_t mm_timestamp();
+/*
+ * Create a channel-to-channel mapping. This API should not
+ * be used by backends. It is only exported for core modules.
+ */
 int mm_map_channel(channel* from, channel* to);
 #endif