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/*************************************************************************/
/* cp_loader_it_instruments.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "cp_loader_it.h"
enum EnvFlags {
ENV_ON=1,
ENV_LOOP=2,
ENV_SUSLOOP=4,
ENV_CARRY=8,
ENV_FILTER=128
};
void CPLoader_IT::load_envelope(CPEnvelope *p_envelope,bool*p_has_filter_flag) {
uint8_t flags=file->get_byte();
uint8_t points=file->get_byte();
uint8_t begin=file->get_byte();
uint8_t end=file->get_byte();
uint8_t susbegin=file->get_byte();
uint8_t susend=file->get_byte();
p_envelope->reset();
for (int i=0;i<25;i++) {
uint8_t height=file->get_byte();
int8_t &signed_height=(int8_t&)height;
uint16_t tick=file->get_word();
if (i>=points)
continue;
p_envelope->add_position( tick, signed_height );
}
p_envelope->set_enabled( flags & ENV_ON );
p_envelope->set_carry_enabled( flags & ENV_CARRY);
p_envelope->set_loop_enabled( flags & ENV_LOOP );
p_envelope->set_loop_begin( begin );
p_envelope->set_loop_end( end );
p_envelope->set_sustain_loop_enabled( flags & ENV_SUSLOOP );
p_envelope->set_sustain_loop_begin( susbegin );
p_envelope->set_sustain_loop_end( susend );
if (p_has_filter_flag)
*p_has_filter_flag=flags&ENV_FILTER;
file->get_byte(); //zerobyte
//fill with stuff if the envelope hass less than 2 points
while(p_envelope->get_node_count()<2) {
p_envelope->add_position( 30*p_envelope->get_node_count(), p_envelope->get_min()==0 ? 64 : 0, false );
}
}
CPLoader::Error CPLoader_IT::load_instrument(CPInstrument *p_instrument,int *p_samples) {
char aux_header[4];
file->get_byte_array((uint8_t*)aux_header,4);
if ( aux_header[0]!='I' ||
aux_header[1]!='M' ||
aux_header[2]!='P' ||
aux_header[3]!='I') {
CP_PRINTERR("IT CPLoader CPInstrument: Failed Identifier");
return FILE_UNRECOGNIZED;
}
// Ignore deprecated 8.3 filename field
for (int i=0;i<12;i++) file->get_byte();
//Ignore zerobyte
file->get_byte(); /* (byte) CPInstrument type (always 0) */
switch( file->get_byte() ) { /* New CPNote Action [0,1,2,3] */
case 0: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_CUT ) ; break;
case 1: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_CONTINUE ) ; break;
case 2: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_OFF ) ; break;
case 3: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_FADE ) ; break;
};
switch( file->get_byte() ) { // Duplicate Check Type
case 0: p_instrument->set_DC_type( CPInstrument::DCT_DISABLED ); break ;
case 1: p_instrument->set_DC_type( CPInstrument::DCT_NOTE ); break ;
case 2: p_instrument->set_DC_type( CPInstrument::DCT_SAMPLE ); break ;
case 3: p_instrument->set_DC_type( CPInstrument::DCT_INSTRUMENT ); break ;
}
switch( file->get_byte() ) { //Duplicate Check Action
case 0: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_CUT ); break ;
case 1: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_OFF ); break ;
case 2: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_FADE ); break ;
}
int fade = file->get_word();
//intf("AFADE: %i\n",fade);
if (fade>CPInstrument::MAX_FADEOUT) //needs to be clipped because of horrible modplug doings
fade=CPInstrument::MAX_FADEOUT;
p_instrument->set_volume_fadeout( fade );
p_instrument->set_pan_pitch_separation( file->get_byte() );
p_instrument->set_pan_pitch_center( file->get_byte() );
p_instrument->set_volume_global_amount( file->get_byte() );
uint8_t pan=file->get_byte();
p_instrument->set_pan_default_amount(pan&0x7F);
p_instrument->set_pan_default_enabled( !(pan&0x80) );
p_instrument->set_volume_random_variation( file->get_byte() );
p_instrument->set_pan_random_variation( file->get_byte() );
file->get_word(); //empty (version)
uint8_t samples=file->get_byte();
if (p_samples)
*p_samples=samples;
file->get_byte(); //empty
char aux_name[26];
file->get_byte_array((uint8_t*)aux_name,26);
p_instrument->set_name(aux_name);
uint8_t cutoff=file->get_byte();
p_instrument->set_filter_default_cutoff(cutoff&0x7F);
p_instrument->set_filter_use_default_cutoff(cutoff&0x80);
uint8_t resonance=file->get_byte();
p_instrument->set_filter_default_resonance(resonance&0x7F);
p_instrument->set_filter_use_default_resonance(resonance&0x80);
file->get_dword(); //MIDI, IGNORED!
/* CPNote -> CPSample table */
for (uint8_t i=0;i<CPNote::NOTES;i++) {
uint8_t note=file->get_byte();
if (note>=CPNote::NOTES)
note=0;
p_instrument->set_note_number(i,note);
uint8_t samp=file->get_byte();
if (samp==0 || samp>99)
samp=CPNote::EMPTY;
else
samp--;
p_instrument->set_sample_number(i,samp);
}
load_envelope( p_instrument->get_volume_envelope() );
load_envelope( p_instrument->get_pan_envelope() );
bool use_as_filter;
load_envelope( p_instrument->get_pitch_filter_envelope(), &use_as_filter );
p_instrument->set_pitch_use_as_filter( use_as_filter );
return FILE_OK;
}
CPLoader::Error CPLoader_IT::load_instruments() {
for (int i=0;i<header.insnum;i++) {
file->seek(0xC0+header.ordnum+i*4);
uint32_t final_location=file->get_dword();
file->seek( final_location );
Error err=load_instrument( song->get_instrument( i ) );
if (err)
return err;
}
return FILE_OK;
if (file->eof_reached() || file->get_error())
return FILE_CORRUPTED;
}
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