feat: add mock JACK test target and unit tests for carla host

engine/src/looper.c

@@ -4,16 +4,16 @@
 #include "command.h"
 #include "midi.h"
 #include "queue.h"
-#include <jack/jack.h>
-#include <sys/stat.h>
 #include <fcntl.h>
-#include <unistd.h>
+#include <jack/jack.h>
 #include <jack/midiport.h>
 #include <math.h>
 #include <stdatomic.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 #define STATUS_FIFO "/tmp/looper_status"
 
@@ -31,15 +31,23 @@ static void looper_write_status(void) {
     int state = atomic_load(&cur[ch].scenes[sc_idx].state);
     const char *state_str;
     switch (state) {
-            case STATE_IDLE:    state_str = "IDLE";    break;
-            case STATE_RECORD:  state_str = "RECORD";  break;
-            case STATE_LOOPING: state_str = "LOOPING"; break;
-            case STATE_PAUSED:  state_str = "PAUSED";  break;
-            default:            state_str = "UNKNOWN";
+    case STATE_IDLE:
+      state_str = "IDLE";
+      break;
+    case STATE_RECORD:
+      state_str = "RECORD";
+      break;
+    case STATE_LOOPING:
+      state_str = "LOOPING";
+      break;
+    case STATE_PAUSED:
+      state_str = "PAUSED";
+      break;
+    default:
+      state_str = "UNKNOWN";
     }
-        int n = snprintf(buf, sizeof(buf),
-                         "CH=%d SC=%d STATE=%s\n",
-                         ch, sc_idx, state_str);
+    int n = snprintf(buf, sizeof(buf), "CH=%d SC=%d STATE=%s\n", ch, sc_idx,
+                     state_str);
     if (n > 0) {
       int ret = write(fd, buf, n);
       (void)ret;
@@ -252,8 +260,7 @@ int process_callback(jack_nframes_t nframes, void *arg) {
             if (rp < MAX_MIDI_EVENTS) {
               sc->loop.midi_events[rp].timestamp = ev.time;
               sc->loop.midi_events[rp].status = ev.buffer[0];
-              sc->loop.midi_events[rp].note =
-                  (ev.size > 1) ? ev.buffer[1] : 0;
+              sc->loop.midi_events[rp].note = (ev.size > 1) ? ev.buffer[1] : 0;
               sc->loop.midi_events[rp].velocity =
                   (ev.size > 2) ? ev.buffer[2] : 0;
               atomic_store(&sc->record_pos, rp + 1);
@@ -310,8 +317,7 @@ int process_callback(jack_nframes_t nframes, void *arg) {
             jack_midi_event_write(midi_out_buf, ev.time, ev.buffer, ev.size);
           }
         }
-        }
-        break;
+      } break;
       }
       if (state == STATE_LOOPING) {
         atomic_store(&sc->loop_count, atomic_load(&sc->record_pos));

engine/src/midi.c

@@ -82,8 +82,7 @@ void midi_handle_events(void *port_buffer, jack_nframes_t nframes) {
               queue_push(&cmd_queue_main_midi, cmd);
             } break;
             case 69: {
-              command_t cmd = {
-                  .type = CMD_ADD_SCENE, .channel = -1, .data = 0};
+              command_t cmd = {.type = CMD_ADD_SCENE, .channel = -1, .data = 0};
               queue_push(&cmd_queue_main_midi, cmd);
             } break;
             case 70: {

engine/src/pipe.c

@@ -7,8 +7,8 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <time.h>
 #include <sys/stat.h>
+#include <time.h>
 #include <unistd.h>
 
 #define FIFO_PATH "/tmp/looper_cmd"
@@ -39,7 +39,8 @@ static void *pipe_thread_func(void *arg) {
         command_t cmd = {.type = CMD_ADD_CHANNEL, .channel = -1, .data = 0};
         queue_push(&cmd_queue_main_fifo, cmd);
       } else if (strcmp(line, "add_midi") == 0) {
-        command_t cmd = {.type = CMD_ADD_MIDI_CHANNEL, .channel = -1, .data = 0};
+        command_t cmd = {
+            .type = CMD_ADD_MIDI_CHANNEL, .channel = -1, .data = 0};
         queue_push(&cmd_queue_main_fifo, cmd);
       } else if (strcmp(line, "remove") == 0) {
         command_t cmd = {.type = CMD_REMOVE_CHANNEL, .channel = -1, .data = 0};