looper/src/channel.c

// cppcheck-suppress missingIncludeSystem
#include "channel.h"
#include <jack/jack.h>
#include <stdatomic.h>
#include <stdio.h>
#include <string.h>

void channel_add(jack_client_t *client, int idx) {
  char in_name[64], out_name[64];
  snprintf(in_name, sizeof(in_name), "channel%d_input", next_channel_id);
  snprintf(out_name, sizeof(out_name), "channel%d_output", next_channel_id);

  channels[idx].audio_in = jack_port_register(
      client, in_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsInput, 0);
  channels[idx].audio_out = jack_port_register(
      client, out_name, JACK_DEFAULT_AUDIO_TYPE, JackPortIsOutput, 0);
  if (!channels[idx].audio_in || !channels[idx].audio_out) {
    fprintf(stderr, "Failed to register ports for channel %d\n",
            next_channel_id);
    /* Do NOT mark channel active – process loop will skip it */
    atomic_store(&channels[idx].active, 0);
    return;
  }

  atomic_store(&channels[idx].active, 1);
  atomic_store(&channels[idx].state, STATE_IDLE);
  channels[idx].prev_state = -1;
  channels[idx].loop_count = 0;
  channels[idx].record_pos = 0;
  channels[idx].playback_pos = 0;

  next_channel_id++;
  channel_count++;
}

void channel_remove(jack_client_t *client, int idx) {
  (void)client;
  atomic_store(&channels[idx].active, 0);
  channel_count--;
}