src/looper.c

@@ -1,13 +1,13 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <jack/jack.h>
-#include <jack/midiport.h>
-#include <stdatomic.h>
-#include <math.h>
 #include "looper.h"
 #include "channel.h"
 #include "midi.h"
+#include <jack/jack.h>
+#include <jack/midiport.h>
+#include <math.h>
+#include <stdatomic.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 
 /* Global state (shared across files) */
 struct channel_t channels[MAX_CHANNELS];
@@ -26,8 +26,7 @@ static int pending_unregister_idx = -1;
 /* ----------------------------------------------------------------
  * process callback
  * ---------------------------------------------------------------- */
-int process_callback(jack_nframes_t nframes, void *arg)
-{
+int process_callback(jack_nframes_t nframes, void *arg) {
   (void)arg;
 
   if (midi_control_port) {
@@ -39,7 +38,8 @@ int process_callback(jack_nframes_t nframes, void *arg)
 
   /* process each active channel */
   for (int c = 0; c < MAX_CHANNELS; c++) {
-        if (!atomic_load(&channels[c].active)) continue;
+    if (!atomic_load(&channels[c].active))
+      continue;
 
     /* Guard against NULL ports (e.g. if port registration failed) */
     if (!channels[c].audio_in || !channels[c].audio_out) {
@@ -47,11 +47,14 @@ int process_callback(jack_nframes_t nframes, void *arg)
       continue;
     }
 
-        jack_default_audio_sample_t *in  = (jack_default_audio_sample_t *)
-            jack_port_get_buffer(channels[c].audio_in, nframes);
-        jack_default_audio_sample_t *out = (jack_default_audio_sample_t *)
-            jack_port_get_buffer(channels[c].audio_out, nframes);
-        if (!out) continue;
+    jack_default_audio_sample_t *in =
+        (jack_default_audio_sample_t *)jack_port_get_buffer(
+            channels[c].audio_in, nframes);
+    jack_default_audio_sample_t *out =
+        (jack_default_audio_sample_t *)jack_port_get_buffer(
+            channels[c].audio_out, nframes);
+    if (!out)
+      continue;
 
     int state = atomic_load(&channels[c].state);
 
@@ -77,7 +80,8 @@ int process_callback(jack_nframes_t nframes, void *arg)
       if (in) {
         for (i = 0; i < nframes; i++) {
           if (channels[c].record_pos < LOOP_BUF_SIZE)
-                        channels[c].loop_buffer[channels[c].record_pos++] = ((const float *)in)[i];
+            channels[c].loop_buffer[channels[c].record_pos++] =
+                ((const float *)in)[i];
           ((float *)out)[i] = ((const float *)in)[i];
         }
       } else {
@@ -90,7 +94,8 @@ int process_callback(jack_nframes_t nframes, void *arg)
         float *outf = (float *)out;
         for (i = 0; i < nframes; i++) {
           outf[i] = channels[c].loop_buffer[channels[c].playback_pos];
-                    channels[c].playback_pos = (channels[c].playback_pos + 1) % channels[c].loop_count;
+          channels[c].playback_pos =
+              (channels[c].playback_pos + 1) % channels[c].loop_count;
         }
       } else {
         memset(out, 0, sizeof(jack_default_audio_sample_t) * nframes);
@@ -120,13 +125,15 @@ int process_callback(jack_nframes_t nframes, void *arg)
       jack_nframes_t n_clock_events = jack_midi_get_event_count(midi_clock_buf);
       jack_midi_event_t cev;
       for (jack_nframes_t j = 0; j < n_clock_events; j++) {
-                if (jack_midi_event_get(&cev, midi_clock_buf, j) != 0) continue;
+        if (jack_midi_event_get(&cev, midi_clock_buf, j) != 0)
+          continue;
         if (cev.size >= 1) {
           unsigned char msg = cev.buffer[0];
           switch (msg) {
           case 0xFA: {
             int s = atomic_load(&channels[0].state);
-                        if (s == STATE_IDLE) atomic_store(&channels[0].state, STATE_RECORD);
+            if (s == STATE_IDLE)
+              atomic_store(&channels[0].state, STATE_RECORD);
             break;
           }
           case 0xFC:
@@ -134,7 +141,8 @@ int process_callback(jack_nframes_t nframes, void *arg)
             break;
           case 0xFB: {
             int s = atomic_load(&channels[0].state);
-                        if (s == STATE_PAUSED) atomic_store(&channels[0].state, STATE_LOOPING);
+            if (s == STATE_PAUSED)
+              atomic_store(&channels[0].state, STATE_LOOPING);
             break;
           }
           default:
@@ -151,8 +159,7 @@ int process_callback(jack_nframes_t nframes, void *arg)
 /* ----------------------------------------------------------------
  * shutdown callback
  * ---------------------------------------------------------------- */
-void jack_shutdown_cb(void *arg)
-{
+void jack_shutdown_cb(void *arg) {
   (void)arg;
   fprintf(stderr, "JACK shutdown\n");
   exit(0);
@@ -161,8 +168,7 @@ void jack_shutdown_cb(void *arg)
 /* ----------------------------------------------------------------
  * looper initialisation
  * ---------------------------------------------------------------- */
-int looper_init(jack_client_t *client)
-{
+int looper_init(jack_client_t *client) {
   /* channel 0 */
   channels[0].active = 1;
   atomic_store(&channels[0].state, STATE_IDLE);
@@ -171,23 +177,19 @@ int looper_init(jack_client_t *client)
   channels[0].record_pos = 0;
   channels[0].playback_pos = 0;
 
-    channels[0].audio_in = jack_port_register(client, "input",
-                                               JACK_DEFAULT_AUDIO_TYPE,
-                                               JackPortIsInput, 0);
-    channels[0].audio_out = jack_port_register(client, "output",
-                                                JACK_DEFAULT_AUDIO_TYPE,
-                                                JackPortIsOutput, 0);
+  channels[0].audio_in = jack_port_register(
+      client, "input", JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
+  channels[0].audio_out = jack_port_register(
+      client, "output", JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
   if (!channels[0].audio_in || !channels[0].audio_out) {
     fprintf(stderr, "Could not create audio ports for channel 0\n");
     return -1;
   }
   channel_count = 1;
 
-    midi_control_port = jack_port_register(client, "control",
-                                            JACK_DEFAULT_MIDI_TYPE,
-                                            JackPortIsInput, 0);
-    midi_clock_port   = jack_port_register(client, "clock",
-                                            JACK_DEFAULT_MIDI_TYPE,
+  midi_control_port = jack_port_register(
+      client, "control", JACK_DEFAULT_MIDI_TYPE, JackPortIsInput, 0);
+  midi_clock_port = jack_port_register(client, "clock", JACK_DEFAULT_MIDI_TYPE,
                                        JackPortIsInput, 0);
   if (!midi_control_port || !midi_clock_port) {
     fprintf(stderr, "Could not create MIDI ports\n");
@@ -200,8 +202,7 @@ int looper_init(jack_client_t *client)
 /* ----------------------------------------------------------------
  * main‑loop command processing
  * ---------------------------------------------------------------- */
-void looper_process_commands(jack_client_t *client)
-{
+void looper_process_commands(jack_client_t *client) {
   /* Unregister any ports that were marked for deferred removal.
      By now the real‑time thread has had at least one full cycle
      to see the `active = 0` store. */
@@ -217,7 +218,8 @@ void looper_process_commands(jack_client_t *client)
   if (atomic_exchange(&cmd_add, 0)) {
     int idx;
     for (idx = 0; idx < MAX_CHANNELS; idx++)
-            if (!channels[idx].active) break;
+      if (!channels[idx].active)
+        break;
     if (idx < MAX_CHANNELS) {
       channel_add(client, idx);
     }
@@ -226,7 +228,8 @@ void looper_process_commands(jack_client_t *client)
   if (atomic_exchange(&cmd_remove, 0)) {
     int remove_idx = -1;
     for (int idx = 1; idx < MAX_CHANNELS; idx++)
-            if (channels[idx].active) remove_idx = idx;
+      if (channels[idx].active)
+        remove_idx = idx;
     if (remove_idx != -1) {
       /* Mark inactive now; ports will be unregistered next round */
       channel_remove(client, remove_idx);

src/main.c

@@ -1,11 +1,10 @@
+#include "looper.h"
+#include <jack/jack.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <jack/jack.h>
-#include "looper.h"
 
-int main(int argc, char *argv[])
-{
+int main(int argc, char *argv[]) {
   (void)argc;
   (void)argv;
   const char *client_name = "looper";