Implement "max_cpu_load" command

Signed-off-by: falkTX <falktx@falktx.com>

Author: falkTX

Makefile

@@ -85,6 +85,10 @@ ifeq ($(shell pkg-config --atleast-version=1.9.0 jack && echo true), true)
 INCS += -DHAVE_JACK2
 endif
 
+ifeq ($(shell pkg-config --atleast-version=1.9.23 jack && echo true), true)
+INCS += -DHAVE_JACK2_1_9_23
+endif
+
 ifeq ($(HAVE_NE10),true)
 LIBS += -lNE10
 INCS += -DHAVE_NE10

README.md

@@ -246,7 +246,10 @@ The commands supported by mod-host are:
         e.g.: cv_unmap 0 "gain"
 
     cpu_load
-        * return current jack cpu load
+        * return current average jack cpu load
+
+    max_cpu_load
+        * return current maximum jack cpu load
 
     load <file_name>
         * load a history command file

src/effects.c

@@ -7952,6 +7952,15 @@ float effects_jack_cpu_load(void)
     return jack_cpu_load(g_jack_global_client);
 }
 
+float effects_jack_max_cpu_load(void)
+{
+#ifdef HAVE_JACK2_1_9_23
+    return jack_max_cpu_load(g_jack_global_client);
+#else
+    return jack_cpu_load(g_jack_global_client);
+#endif
+}
+
 #define OS_SEP '/'
 
 void effects_bundle_add(const char* bpath)

src/effects.h

@@ -181,6 +181,7 @@ int effects_hmi_map(int effect_id, const char *control_symbol, int hw_id, int pa
 int effects_hmi_unmap(int effect_id, const char *control_symbol);
 
 float effects_jack_cpu_load(void);
+float effects_jack_max_cpu_load(void);
 void effects_bundle_add(const char *bundlepath);
 void effects_bundle_remove(const char *bundlepath, const char *resource);
 int effects_state_load(const char *dir);

src/mod-host.c

@@ -509,6 +509,15 @@ static void cpu_load_cb(proto_t *proto)
     protocol_response(buffer, proto);
 }
 
+static void max_cpu_load_cb(proto_t *proto)
+{
+    float value = effects_jack_max_cpu_load();
+    char buffer[128];
+    sprintf(buffer, "resp 0 %.04f", value);
+
+    protocol_response(buffer, proto);
+}
+
 #ifndef SKIP_READLINE
 static void load_cb(proto_t *proto)
 {
@@ -770,6 +779,7 @@ static int mod_host_init(jack_client_t* client, int socket_port, int feedback_po
     protocol_add_command(HMI_MAP, hmi_map_cb);
     protocol_add_command(HMI_UNMAP, hmi_unmap_cb);
     protocol_add_command(CPU_LOAD, cpu_load_cb);
+    protocol_add_command(MAX_CPU_LOAD, max_cpu_load_cb);
 #ifndef SKIP_READLINE
     protocol_add_command(LOAD_COMMANDS, load_cb);
     protocol_add_command(SAVE_COMMANDS, save_cb);

src/mod-host.h

@@ -86,6 +86,7 @@
 #define HMI_MAP              "hmi_map %i %s %i %i %i %i %i %s %f %f %i"
 #define HMI_UNMAP            "hmi_unmap %i %s"
 #define CPU_LOAD             "cpu_load"
+#define MAX_CPU_LOAD         "max_cpu_load"
 #define LOAD_COMMANDS        "load %s"
 #define SAVE_COMMANDS        "save %s"
 #define BUNDLE_ADD           "bundle_add %s"