text: /* Extended Module Player
   * Copyright (C) 1996-2016 Claudio Matsuoka and Hipolito Carraro Jr
   *
   * 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.
   */
  
  #include <stdlib.h>
  #include "common.h"
  #include "player.h"
  #include "extras.h"
  #include "med_extras.h"
  #include "hmn_extras.h"
  
  /*
   * Module extras
   */
  
  void release_module_extras(struct context_data *ctx)
  {
  	struct module_data *m = &ctx->m;
  
  	if (HAS_MED_MODULE_EXTRAS(*m))
  		med_release_module_extras(m);
  	else if (HAS_HMN_MODULE_EXTRAS(*m))
  		hmn_release_module_extras(m);
  }
  
  /*
   * Channel extras
   */
  
  int new_channel_extras(struct context_data *ctx, struct channel_data *xc)
  {
  	struct module_data *m = &ctx->m;
  
  	if (HAS_MED_MODULE_EXTRAS(*m)) {
  		if (med_new_channel_extras(xc) < 0)
  			return -1;
  	} else if (HAS_HMN_MODULE_EXTRAS(*m)) {
  		if (hmn_new_channel_extras(xc) < 0)
  			return -1;
  	}
  
  	return 0;
  }
  
  void release_channel_extras(struct context_data *ctx, struct channel_data *xc)
  {
  	struct module_data *m = &ctx->m;
  
  	if (HAS_MED_CHANNEL_EXTRAS(*m))
  		med_release_channel_extras(xc);
  	else if (HAS_HMN_CHANNEL_EXTRAS(*m))
  		hmn_release_channel_extras(xc);
  }
  
  void reset_channel_extras(struct context_data *ctx, struct channel_data *xc)
  {
  	struct module_data *m = &ctx->m;
  
  	if (HAS_MED_CHANNEL_EXTRAS(*m))
  		med_reset_channel_extras(xc);
  	else if (HAS_HMN_CHANNEL_EXTRAS(*m))
  		hmn_reset_channel_extras(xc);
  }
  
  /*
   * Player extras
   */
  
  void play_extras(struct context_data *ctx, struct channel_data *xc, int chn)
  {
  	struct module_data *m = &ctx->m;
  
  	if (xc->ins >= m->mod.ins)	/* SFX instruments have no extras */
  		return;
  
          if (HAS_MED_INSTRUMENT_EXTRAS(m->mod.xxi[xc->ins]))
  		med_play_extras(ctx, xc, chn);
          else if (HAS_HMN_INSTRUMENT_EXTRAS(m->mod.xxi[xc->ins]))
  		hmn_play_extras(ctx, xc, chn);
  }
  
  int extras_get_volume(struct context_data *ctx, struct channel_data *xc)
  {
  	struct module_data *m = &ctx->m;
  	int vol;
  
  	if (xc->ins >= m->mod.ins)
  		vol = xc->volume;
          else if (HAS_MED_INSTRUMENT_EXTRAS(m->mod.xxi[xc->ins]))
  		vol = MED_CHANNEL_EXTRAS(*xc)->volume * xc->volume / 64;
  	else if (HAS_HMN_INSTRUMENT_EXTRAS(m->mod.xxi[xc->ins]))
  		vol = HMN_CHANNEL_EXTRAS(*xc)->volume * xc->volume / 64;
  	else
  		vol = xc->volume;
  
  	return vol;
  }
  
  int extras_get_period(struct context_data *ctx, struct channel_data *xc)
  {
  	int period;
  
  	if (HAS_MED_CHANNEL_EXTRAS(*xc))
  		period = med_change_period(ctx, xc);
  	else period = 0;
  
  	return period;
  }
  
  int extras_get_linear_bend(struct context_data *ctx, struct channel_data *xc)
  {
  	int linear_bend;
  
  	if (HAS_MED_CHANNEL_EXTRAS(*xc))
  		linear_bend = med_linear_bend(ctx, xc);
  	else if (HAS_HMN_CHANNEL_EXTRAS(*xc))
  		linear_bend = hmn_linear_bend(ctx, xc);
  	else
  		linear_bend = 0;
  
  	return linear_bend;
  }
  
  void extras_process_fx(struct context_data *ctx, struct channel_data *xc,
  			int chn, uint8 note, uint8 fxt, uint8 fxp, int fnum)
  {
  	if (HAS_MED_CHANNEL_EXTRAS(*xc))
  		med_extras_process_fx(ctx, xc, chn, note, fxt, fxp, fnum);
  	else if (HAS_HMN_CHANNEL_EXTRAS(*xc))
  		hmn_extras_process_fx(ctx, xc, chn, note, fxt, fxp, fnum);
  }
  