bool ctrig;
bool dtrig;
bool cpytrig;
bool cpytemptrig;
bool del;
bool clrtrig;

bool move;

bool mtrig;
uint8_t mslot;
uint8_t srcslot;

bool deletetrig;
bool copytrig;

uint32_t sstart;
uint32_t send;
uint32_t slength;

uint32_t slottemp[4];
int32_t paramtemp[1 << attr_blocksize];

static const uint16_t LENGTH = 1024;
uint32_t *array;
bool REC;
uint8_t RECSLOT;

uint8_t index;
bool save;
bool load;
bool busy;
bool trig;
uint8_t m_count;
int rem_sz;
char *t_adr;
bool error;
char fn[32];

void _save() {
  error = 0;
  FIL FileObject;
  FRESULT err;
  UINT bytes_written;
  err = f_open(&FileObject, fn, FA_WRITE | FA_CREATE_ALWAYS);
  if (err != FR_OK) {
    report_fatfs_error(err, fn);
    error = 1;
    return;
  }
  int offset = 0;
  while (rem_sz > 0) {
    if (rem_sz > sizeof(fbuff)) {
      memcpy((char *)fbuff, t_adr + offset, sizeof(fbuff));
      err = f_write(&FileObject, fbuff, sizeof(fbuff), &bytes_written);
      rem_sz -= sizeof(fbuff);
      offset += sizeof(fbuff);
    } else {
      memcpy((char *)fbuff, t_adr + offset, rem_sz);
      err = f_write(&FileObject, fbuff, rem_sz, &bytes_written);
      rem_sz = 0;
    }
  }
  if (err != FR_OK) {
    report_fatfs_error(err, fn);
    error = 1;
    return;
  }
  err = f_close(&FileObject);
}

void _load() {
  error = 0;
  FIL FileObject;
  FRESULT err;
  UINT bytes_read;
  err = f_open(&FileObject, fn, FA_READ | FA_OPEN_EXISTING);
  if (err != FR_OK) {
    report_fatfs_error(err, fn);
    error = 1;
    return;
  }
  int offset = 0;
  while (rem_sz > 0) {
    if (rem_sz > sizeof(fbuff)) {
      err = f_read(&FileObject, fbuff, sizeof(fbuff), &bytes_read);
      if (bytes_read == 0)
        break;
      memcpy(t_adr + offset, (char *)fbuff, bytes_read);
      rem_sz -= bytes_read;
      offset += bytes_read;
    } else {
      err = f_read(&FileObject, fbuff, rem_sz, &bytes_read);
      memcpy(t_adr + offset, (char *)fbuff, bytes_read);
      rem_sz = 0;
    }
  }
  if (err != FR_OK) {
    report_fatfs_error(err, fn);
    error = 1;
    return;
  }
  err = f_close(&FileObject);
}

void delete_slot(uint8_t target) {
  if (array[(target << 2) + 2]) {
    sstart = array[target << 2];
    send = array[(target << 2) + 1];
    int i;
    for (i = 0; i < 4; i++)
      array[(target << 2) + i] = 0;
    bool check = 1;
    for (i = 0; i < 127; i++)
      if (array[(i << 2) + 1] == send)
        check = 0;
    if (check) {
      array[array[1023] + 512] = sstart;
      array[array[1023] + 767] = send;
      array[1023]++;
    }
  }
}

static uint32_t _array[attr_poly][1024] __attribute__((section(".sdram")));
array = &_array[parent->polyIndex][0];
{
  int i;
  for (i = 0; i < 1024; i++)
    array[i] = 0;
}

mslot = inlet_slot % 126;
outlet_delete = 0;

// delete
if (inlet_delete && inlet_trig && !dtrig) {
  delete_slot(mslot);
  dtrig = 1;
  outlet_delete = 1;
}
// compact
if (inlet_defrag && !ctrig) {
  ctrig = 1;
  int i;
  for (i = 0; i < array[1023]; i++) {
    send = array[i + 767];
    sstart = array[i + 512];
    slength = (send - sstart);
    int shift_index;
    for (shift_index = 0; shift_index < 512; shift_index += 4)
      if (array[shift_index] >= send) {
        array[shift_index] -= slength;
        array[shift_index + 1] -= slength;
      }
    int move_samples;
    for (move_samples = send; move_samples < (array[1022]); move_samples++)
      attr_wave.array[move_samples - slength] = attr_wave.array[move_samples];
    int shift_chunks;
    for (shift_chunks = 0; shift_chunks < array[1023]; shift_chunks++)
      if (array[shift_chunks + 512] >= send) {
        array[shift_chunks + 512] -= slength;
        array[shift_chunks + 767] -= slength;
      }

    array[1022] -= slength;
  }
  array[1023] = 0;
}
if (!inlet_defrag)
  ctrig = 0;

// paste
if (inlet_trig && cpytemptrig && !cpytrig && (inlet_copy || move)) {
  cpytrig = 1;
  delete_slot(mslot);
  int i;
  for (i = 0; i < 4; i++)
    array[(mslot << 2) + i] = slottemp[i];
  for (i = 0; i < (1 << attr_blocksize); i++)
    attr_params.array[(mslot << attr_blocksize) + i] = paramtemp[i];
  if (move) {
    delete_slot(srcslot);
    outlet_delete = 1;
    move = 0;
  }
}

// copy
if (inlet_trig && !cpytemptrig && (inlet_copy || move)) {
  cpytemptrig = 1;
  srcslot = mslot;
  int i;
  for (i = 0; i < 4; i++)
    slottemp[i] = array[(mslot << 2) + i];
  for (i = 0; i < (1 << attr_blocksize); i++)
    paramtemp[i] = attr_params.array[(mslot << attr_blocksize) + i];
}

// move
if (inlet_move && !mtrig) {
  mtrig = 1;
  move = 1;
}

// clear
if (inlet_clear && !clrtrig) {
  clrtrig = 1;
  int i;
  for (i = 0; i < 1024; i++)
    array[i] = 0;
}

if (!inlet_copy && !inlet_move)
  cpytemptrig = 0;
if (!inlet_move) {
  mtrig = 0;
  move = 0;
}
if (!inlet_trig) {
  cpytrig = 0;
  dtrig = 0;
}
if (!inlet_clear)
  clrtrig = 0;

// IO
if (inlet_save && !trig) {
  save = 1;
  index = 0;
  trig = 1;
  m_count = 3;
}

if (inlet_load && !trig) {
  load = 1;
  index = 0;
  trig = 1;
  m_count = 3;
}

busy = load || save;

if (busy) {
  switch (index ? index : 0) {
  case 0: {
    rem_sz = 1024 << 2;
    t_adr = (char *)(&array[0]);
    strcpy(&fn[0], inlet_filename);
    strcat(&fn[0], ".slt");
    break;
  }
  case 1: {
    rem_sz = sizeof(*attr_wave.array) * array[1022];
    t_adr = (char *)(&attr_wave.array[0]);
    strcpy(&fn[0], inlet_filename);
    strcat(&fn[0], ".raw");
    break;
  }
  case 2: {
    rem_sz = sizeof(*attr_params.array) * attr_params.LENGTH;
    t_adr = (char *)(&attr_params.array[0]);
    strcpy(&fn[0], inlet_filename);
    strcat(&fn[0], ".prm");
    break;
  }
  }
}

if (save) {
  _save();
  if (error)
    index = 127;
  index++;
  if (index >= m_count) {
    save = 0;
  }
}

if (load) {
  _load();
  if (error)
    index = 127;
  index++;
  if (index >= m_count) {
    load = 0;
  }
}

if (!inlet_load && !inlet_save && !busy)
  trig = 0;
outlet_test = sizeof(*attr_wave.array);