// ----
// ---- file   : $(NAME).cpp
// ---- author : $(AUTHOR)
// ---- legal  : Distributed under terms of the MIT license (https://opensource.org/licenses/MIT)
// ----
// ----          Permission is hereby granted, free of charge, to any person obtaining a copy of this software and 
// ----          associated documentation files (the "Software"), to deal in the Software without restriction, including 
// ----          without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 
// ----          copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to 
// ----          the following conditions:
// ----  
// ----          The above copyright notice and this permission notice shall be included in all copies or substantial 
// ----          portions of the Software.
// ----
// ----          THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
// ----          NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// ----          IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
// ----          WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
// ----          SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// ----
// ---- info   : auto-generated by "Cycle"
// ----           $ g++ -Wall -Wno-unused-function -Wno-unused-variable -I../../tksampler -c $(NAME).cpp -o $(NAME).o
// ---- created: $(DATE)
// ----
// ----
// ----

#include <plugin.h>

#include <stdlib.h>
#include <math.h>
#include <string.h>
$(INC_STDIO)

$(OVERSAMPLE_FACTOR)

$(PARAM_DEFS)static const char *loc_param_names[NUM_PARAMS] = {
$(PARAM_NAMES)
};
static float loc_param_resets[NUM_PARAMS] = {
$(PARAM_RESETS)
};

$(MOD_DEFS)static const char *loc_mod_names[NUM_MODS] = {
$(MOD_NAMES)
};

typedef struct $(NAME)_info_s {
   st_plugin_info_t base;
} $(NAME)_info_t;

typedef struct $(NAME)_shared_s {
   st_plugin_shared_t base;
   float params[NUM_PARAMS];
$(LUT_DECL_SHARED)
} $(NAME)_shared_t;

typedef struct $(NAME)_voice_s {
   st_plugin_voice_t base;
   float             sample_rate;
   float             note_speed_fixed;
   float             note_speed_cur;
   float             note_speed_inc;
   float             note_cur;
   float             note_inc;
   float             mods[NUM_MODS];
$(MOD_CUR_INC_DECL)
$(VAR_DECLS)$(LUT_DECL_VOICE)
} $(NAME)_voice_t;

$(HEADER)
$(LUT_DECL)$(PLUGIN_WAVEFORMS)$(INIT_DECL)$(LUT_INIT)$(INIT_FXN)
static unsigned int loc_copy_chars(char *_d, const unsigned int _dSize, const char *_s) {
   unsigned int r = 0u;
   if(NULL != _d)
   {
      // Write min(dSize,len(s)) characters to 'd'
      char *d = _d;
      if(NULL != _s)
      {
         const char *s = _s;
         for(;;)
         {
            if(r < _dSize)
            {
               char c = s[r++];
               *d++ = c;
               if(0 == c)
                  break;
            }
            else
            {
               if(r > 0u)
                  d[-1] = 0;  // force ASCIIZ
               break;
            }
         }
      }
      else
      {
         if(_dSize > 0u)
         {
            _d[0] = 0;
            r = 1u;
         }
      }
   }
   else
   {
      // Return total length of source string
      if(NULL != _s)
      {
         const char *s = _s;
         for(;;)
         {
            char c = s[r++];
            if(0 == c)
               break;
         }
      }
   }
   return r;
}

static unsigned int loc_copy_floats(float              *_d,
                                    const unsigned int  _dSize,
                                    const float        *_s,
                                    const unsigned int  _sNum
                                    ) {
   unsigned int r = 0u;
   if(NULL != _d)
   {
      // Write min(dSize,sNum) characters to 'd'
      if(NULL != _s)
      {
         unsigned int num = (_sNum > _dSize) ? _dSize : _sNum;
         memcpy((void*)_d, (const void*)_s, num * sizeof(float));
         r = num;
      }
   }
   else
   {
      // Query total number of presets
      r = _sNum;
   }
   return r;
}

static const char *ST_PLUGIN_API loc_get_param_name(st_plugin_info_t *_info,
                                                    unsigned int      _paramIdx
                                                    ) {
   (void)_info;
   return loc_param_names[_paramIdx];
}

static const char *ST_PLUGIN_API loc_get_param_group_name(st_plugin_info_t *_info,
                                                          unsigned int      _paramGroupIdx
                                                          ) {
   (void)_info;
   const char *r = NULL;
$(GET_PARAM_GROUP_NAME)   return r;
}

static unsigned int ST_PLUGIN_API loc_get_param_group_idx(st_plugin_info_t *_info,
                                                          unsigned int      _paramIdx
                                                          ) {
   (void)_info;
   unsigned int r = ~0u;
$(GET_PARAM_GROUP_IDX)   return r;
}

static float ST_PLUGIN_API loc_get_param_reset(st_plugin_info_t *_info,
                                               unsigned int      _paramIdx
                                               ) {
   (void)_info;
   return loc_param_resets[_paramIdx];
}

static float ST_PLUGIN_API loc_get_param_value(st_plugin_shared_t *_shared,
                                               unsigned int        _paramIdx
                                               ) {
   ST_PLUGIN_SHARED_CAST($(NAME)_shared_t);
   return shared->params[_paramIdx];
}

static void ST_PLUGIN_API loc_set_param_value(st_plugin_shared_t *_shared,
                                              unsigned int        _paramIdx,
                                              float               _value
                                              ) {
   ST_PLUGIN_SHARED_CAST($(NAME)_shared_t);
   shared->params[_paramIdx] = _value;
}

static unsigned int ST_PLUGIN_API loc_query_dynamic_param_preset_values(st_plugin_shared_t *_shared,
                                                                        const unsigned int  _paramIdx,
                                                                        float              *_retValues,
                                                                        const unsigned int  _retValuesSize
                                                                        ) {
   ST_PLUGIN_SHARED_CAST($(NAME)_shared_t);
   unsigned int r = 0u;
$(QUERY_PRESET_VALUES)
   return r;
}

static unsigned int ST_PLUGIN_API loc_query_dynamic_param_preset_name(st_plugin_shared_t *_shared,
                                                                      const unsigned int  _paramIdx,
                                                                      const unsigned int  _presetIdx,
                                                                      char               *_retBuf,
                                                                      const unsigned int  _retBufSize
                                                                      ) {
   ST_PLUGIN_SHARED_CAST($(NAME)_shared_t);
   unsigned int r = 0u;
$(QUERY_PRESET_NAME)
   return r;
}

static const char *ST_PLUGIN_API loc_get_mod_name(st_plugin_info_t *_info,
                                                  unsigned int      _modIdx
                                                  ) {
   (void)_info;
   return loc_mod_names[_modIdx];
}

static void ST_PLUGIN_API loc_set_sample_rate(st_plugin_voice_t *_voice,
                                              float              _sampleRate
                                              ) {
   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);
   voice->sample_rate = _sampleRate;
}

static void ST_PLUGIN_API loc_note_on(st_plugin_voice_t  *_voice,
                                      int                 _bGlide,
                                      unsigned char       _note,
                                      float               _vel
                                      ) {
   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);
   ST_PLUGIN_VOICE_SHARED_CAST($(NAME)_shared_t);
   (void)_bGlide;
   (void)_note;
   (void)_vel;
   if(!_bGlide)
   {
      memset((void*)voice->mods, 0, sizeof(voice->mods));
#ifdef OVERSAMPLE_FACTOR
      voice->note_speed_fixed = (0.5f / (voice->sample_rate * OVERSAMPLE_FACTOR));
#else
      voice->note_speed_fixed = (0.5f / voice->sample_rate);
#endif // OVERSAMPLE_FACTOR
$(INIT)
$(GLOBAL_RESET)
$(CYCLE_RESET)
$(VAR_RESET)
$(CALL_INIT)
$(CALL_LUT_SHARED)   }
}

static void ST_PLUGIN_API loc_set_mod_value(st_plugin_voice_t *_voice,
                                            unsigned int       _modIdx,
                                            float              _value,
                                            unsigned           _frameOffset
                                            ) {
   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);
   (void)_frameOffset;
   voice->mods[_modIdx] = _value;
}

static void ST_PLUGIN_API loc_prepare_block(st_plugin_voice_t *_voice,
                                            unsigned int       _numFrames,
                                            float              _freqHz,
                                            float              _note,
                                            float              _vol,
                                            float              _pan
                                            ) {
   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);
   ST_PLUGIN_VOICE_SHARED_CAST($(NAME)_shared_t);
   (void)_note;
   (void)_vol;
   (void)_pan;

#ifdef OVERSAMPLE_FACTOR
   float noteSpeed = _freqHz / (voice->sample_rate * OVERSAMPLE_FACTOR);
#else
   float noteSpeed = _freqHz / voice->sample_rate;
#endif // OVERSAMPLE_FACTOR

$(PREPARE_BLOCK_MOD_VARS)
   if(_numFrames > 0u)
   {
      // lerp
      float recBlockSize = (1.0f / _numFrames);
      voice->note_speed_inc = (noteSpeed - voice->note_speed_cur) * recBlockSize;
      voice->note_inc       = (_note - voice->note_cur) * recBlockSize;
$(PREPARE_BLOCK_LERP)
   $(CALL_PREPARE)
   }
   else
   {
      // initial params/modulation (first block, not rendered)
      voice->note_speed_cur = noteSpeed;
      voice->note_speed_inc = 0.0f;
      voice->note_cur       = _note;
      voice->note_inc       = 0.0f;
$(PREPARE_BLOCK_INIT)
   $(CALL_PREPARE)$(CALL_LUT_VOICE)
   }
$(VOICEBUS_INDICES)
   // printf("xxx note_cur=%f\n", voice->note_cur);
}

static void ST_PLUGIN_API loc_process_replace(st_plugin_voice_t  *_voice,
                                              int                 _bMonoIn,
                                              const float        *_samplesIn,
                                              float              *_samplesOut, 
                                              unsigned int        _numFrames
                                              ) {
   (void)_bMonoIn;
   (void)_samplesIn;

   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);
   ST_PLUGIN_VOICE_SHARED_CAST($(NAME)_shared_t);

$(VOICEBUS_PTRS)   // Mono output (replicate left to right channel)
   unsigned int j = 0u;
   unsigned int jStep = _bMonoIn ? 1u : 2u;
   unsigned int k = 0u;
   for(unsigned int i = 0u; i < _numFrames; i++)
   {
      float out = _samplesIn[j];
      j += jStep;
#ifdef OVERSAMPLE_FACTOR
      float outOS = 0.0f;
#endif // OVERSAMPLE_FACTOR

#ifdef OVERSAMPLE_FACTOR
      for(unsigned int osi = 0u; osi < OVERSAMPLE_FACTOR; osi++)
#endif // OVERSAMPLE_FACTOR
      {
$(PROCESS_CALC)
#ifdef OVERSAMPLE_FACTOR
         outOS += out;
#endif // OVERSAMPLE_FACTOR
      }
#ifdef OVERSAMPLE_FACTOR
      // Apply lowpass filter before downsampling
      //   (note) normalized Fc = F/Fs = 0.442947 / sqrt(oversample_factorČ - 1)
      out = outOS * (1.0f / OVERSAMPLE_FACTOR);
#endif // OVERSAMPLE_FACTOR
      _samplesOut[k]      = out;
      _samplesOut[k + 1u] = out;

      // Next frame
      k += 2u;
      voice->note_speed_cur += voice->note_speed_inc;
$(PROCESS_INC_CUR)   } /* loop numFrames */
}

static st_plugin_shared_t *ST_PLUGIN_API loc_shared_new(st_plugin_info_t *_info) {
   $(NAME)_shared_t *ret = ($(NAME)_shared_t *)malloc(sizeof($(NAME)_shared_t));
   if(NULL != ret)
   {
      memset((void*)ret, 0, sizeof(*ret));
      ret->base.info  = _info;
      memcpy((void*)ret->params, (void*)loc_param_resets, NUM_PARAMS * sizeof(float));
   }
   return &ret->base;
}

static void ST_PLUGIN_API loc_shared_delete(st_plugin_shared_t *_shared) {
   free((void*)_shared);
}

static st_plugin_voice_t *ST_PLUGIN_API loc_voice_new(st_plugin_info_t *_info) {
   $(NAME)_voice_t *voice = ($(NAME)_voice_t *)malloc(sizeof($(NAME)_voice_t));
   if(NULL != voice)
   {
      memset((void*)voice, 0, sizeof(*voice));
      voice->base.info = _info;
$(ALLOC_RESET)   }
   return &voice->base;
}

static void ST_PLUGIN_API loc_voice_delete(st_plugin_voice_t *_voice) {
   ST_PLUGIN_VOICE_CAST($(NAME)_voice_t);

   free((void*)_voice);
}

static void ST_PLUGIN_API loc_plugin_exit(st_plugin_info_t *_info) {
   free((void*)_info);
}

#ifdef USE_CYCLE_SINE_TBL
static void loc_calc_sine_tbl(void) {
#define QCOS_BITS 16
#define QCOS_ONE  (1 << QCOS_BITS)
#define QCOS_MASK (QCOS_ONE - 1)
   // (note) same as in TSR "C" implementation
   float *qcos = cycle_sine_tbl_f + 4096; // quarter cos tbl

   // calc quarter cos tbl
   int k = 0;
   for(int a = 0; a < (QCOS_ONE/4); a += (QCOS_ONE/16384)/*4*/)  // 4096 elements
   {
      int x = a - ((int)(QCOS_ONE * 0.25 + 0.5)) + ((a + ((int)(QCOS_ONE * 0.25 + 0.5)))&~QCOS_MASK);
      x = ((x * ((x<0?-x:x) - ((int)(QCOS_ONE * 0.5 + 0.5)))) >> QCOS_BITS) << 4;
      x += (((((int)(QCOS_ONE * 0.225 + 0.5)) * x) >> QCOS_BITS) * ((x<0?-x:x) - QCOS_ONE)) >> QCOS_BITS;
      qcos[k++] = x / float(QCOS_ONE);
   }

   // 0°..90° (rev qtbl)
   int j = 4096;
   k = 0;
   loop(4096)
      cycle_sine_tbl_f[k++] = qcos[--j];

   // 90..180° = cos tbl
   k += 4096;

   // 180°..360° (y-flip first half of tbl)
   j = 0;
   loop(8192)
      cycle_sine_tbl_f[k++] = -cycle_sine_tbl_f[j++];

#ifdef USE_CYCLE_SINE_TBL_I
   loop(16384)
      cycle_sine_tbl_i[i] = (short)(cycle_sine_tbl_f[i] * 2048.0f/*FX_ONE*/);
#endif // USE_CYCLE_SINE_TBL_I
}
#endif // USE_CYCLE_SINE_TBL

extern "C" {
st_plugin_info_t *$(NAME)_init(void) {
   $(NAME)_info_t *ret = ($(NAME)_info_t *)malloc(sizeof($(NAME)_info_t));

   if(NULL != ret)
   {
      memset(ret, 0, sizeof(*ret));

      ret->base.api_version = ST_PLUGIN_API_VERSION;
      ret->base.id          = "$(ID)";  // unique id. don't change this in future builds.
      ret->base.author      = "$(AUTHOR)";
      ret->base.name        = "$(NAME_LONG)";
      ret->base.short_name  = "$(NAME_SHORT)";
      ret->base.flags       = $(FLAGS);
      ret->base.category    = $(CAT);
      ret->base.num_params  = NUM_PARAMS;
      ret->base.num_mods    = NUM_MODS;

      ret->base.shared_new                        = &loc_shared_new;
      ret->base.shared_delete                     = &loc_shared_delete;
      ret->base.voice_new                         = &loc_voice_new;
      ret->base.voice_delete                      = &loc_voice_delete;
      ret->base.get_param_name                    = &loc_get_param_name;
      ret->base.get_param_group_name              = &loc_get_param_group_name;
      ret->base.get_param_group_idx               = &loc_get_param_group_idx;
      ret->base.get_param_reset                   = &loc_get_param_reset;
      ret->base.query_dynamic_param_preset_values = &loc_query_dynamic_param_preset_values;
      ret->base.query_dynamic_param_preset_name   = &loc_query_dynamic_param_preset_name;
      ret->base.get_param_value                   = &loc_get_param_value;
      ret->base.set_param_value                   = &loc_set_param_value;
      ret->base.get_mod_name                      = &loc_get_mod_name;
      ret->base.set_sample_rate                   = &loc_set_sample_rate;
      ret->base.note_on                           = &loc_note_on;
      ret->base.set_mod_value                     = &loc_set_mod_value;
      ret->base.prepare_block                     = &loc_prepare_block;
      ret->base.process_replace                   = &loc_process_replace;
      ret->base.plugin_exit                       = &loc_plugin_exit;

#ifdef USE_CYCLE_SINE_TBL
      loc_calc_sine_tbl();
#endif // USE_CYCLE_SINE_TBL
   }

   return &ret->base;
}

#ifndef STFX_SKIP_MAIN_INIT
ST_PLUGIN_APICALL st_plugin_info_t *ST_PLUGIN_API st_plugin_init(unsigned int _pluginIdx) {
   switch(_pluginIdx)
   {
      case 0u:
         return $(NAME)_init();
   }
   return NULL;
}
#endif // STFX_SKIP_MAIN_INIT

} // extern "C"
