225 lines
7.2 KiB
C++
225 lines
7.2 KiB
C++
/*************************************************************************/
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/* cp_loader_it_instruments.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2015 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "cp_loader_it.h"
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enum EnvFlags {
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ENV_ON=1,
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ENV_LOOP=2,
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ENV_SUSLOOP=4,
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ENV_CARRY=8,
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ENV_FILTER=128
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};
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void CPLoader_IT::load_envelope(CPEnvelope *p_envelope,bool*p_has_filter_flag) {
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uint8_t flags=file->get_byte();
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uint8_t points=file->get_byte();
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uint8_t begin=file->get_byte();
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uint8_t end=file->get_byte();
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uint8_t susbegin=file->get_byte();
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uint8_t susend=file->get_byte();
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p_envelope->reset();
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for (int i=0;i<25;i++) {
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uint8_t height=file->get_byte();
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int8_t &signed_height=(int8_t&)height;
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uint16_t tick=file->get_word();
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if (i>=points)
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continue;
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p_envelope->add_position( tick, signed_height );
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}
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p_envelope->set_enabled( flags & ENV_ON );
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p_envelope->set_carry_enabled( flags & ENV_CARRY);
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p_envelope->set_loop_enabled( flags & ENV_LOOP );
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p_envelope->set_loop_begin( begin );
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p_envelope->set_loop_end( end );
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p_envelope->set_sustain_loop_enabled( flags & ENV_SUSLOOP );
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p_envelope->set_sustain_loop_begin( susbegin );
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p_envelope->set_sustain_loop_end( susend );
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if (p_has_filter_flag)
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*p_has_filter_flag=flags&ENV_FILTER;
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file->get_byte(); //zerobyte
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//fill with stuff if the envelope hass less than 2 points
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while(p_envelope->get_node_count()<2) {
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p_envelope->add_position( 30*p_envelope->get_node_count(), p_envelope->get_min()==0 ? 64 : 0, false );
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}
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}
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CPLoader::Error CPLoader_IT::load_instrument(CPInstrument *p_instrument,int *p_samples) {
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char aux_header[4];
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file->get_byte_array((uint8_t*)aux_header,4);
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if ( aux_header[0]!='I' ||
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aux_header[1]!='M' ||
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aux_header[2]!='P' ||
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aux_header[3]!='I') {
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CP_PRINTERR("IT CPLoader CPInstrument: Failed Identifier");
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return FILE_UNRECOGNIZED;
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}
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// Ignore deprecated 8.3 filename field
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for (int i=0;i<12;i++) file->get_byte();
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//Ignore zerobyte
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file->get_byte(); /* (byte) CPInstrument type (always 0) */
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switch( file->get_byte() ) { /* New CPNote Action [0,1,2,3] */
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case 0: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_CUT ) ; break;
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case 1: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_CONTINUE ) ; break;
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case 2: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_OFF ) ; break;
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case 3: p_instrument->set_NNA_type( CPInstrument::NNA_NOTE_FADE ) ; break;
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};
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switch( file->get_byte() ) { // Duplicate Check Type
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case 0: p_instrument->set_DC_type( CPInstrument::DCT_DISABLED ); break ;
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case 1: p_instrument->set_DC_type( CPInstrument::DCT_NOTE ); break ;
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case 2: p_instrument->set_DC_type( CPInstrument::DCT_SAMPLE ); break ;
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case 3: p_instrument->set_DC_type( CPInstrument::DCT_INSTRUMENT ); break ;
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}
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switch( file->get_byte() ) { //Duplicate Check Action
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case 0: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_CUT ); break ;
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case 1: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_OFF ); break ;
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case 2: p_instrument->set_DC_action( CPInstrument::DCA_NOTE_FADE ); break ;
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}
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int fade = file->get_word();
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//intf("AFADE: %i\n",fade);
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if (fade>CPInstrument::MAX_FADEOUT) //needs to be clipped because of horrible modplug doings
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fade=CPInstrument::MAX_FADEOUT;
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p_instrument->set_volume_fadeout( fade );
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p_instrument->set_pan_pitch_separation( file->get_byte() );
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p_instrument->set_pan_pitch_center( file->get_byte() );
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p_instrument->set_volume_global_amount( file->get_byte() );
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uint8_t pan=file->get_byte();
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p_instrument->set_pan_default_amount(pan&0x7F);
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p_instrument->set_pan_default_enabled( !(pan&0x80) );
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p_instrument->set_volume_random_variation( file->get_byte() );
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p_instrument->set_pan_random_variation( file->get_byte() );
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file->get_word(); //empty (version)
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uint8_t samples=file->get_byte();
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if (p_samples)
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*p_samples=samples;
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file->get_byte(); //empty
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char aux_name[26];
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file->get_byte_array((uint8_t*)aux_name,26);
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p_instrument->set_name(aux_name);
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uint8_t cutoff=file->get_byte();
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p_instrument->set_filter_default_cutoff(cutoff&0x7F);
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p_instrument->set_filter_use_default_cutoff(cutoff&0x80);
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uint8_t resonance=file->get_byte();
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p_instrument->set_filter_default_resonance(resonance&0x7F);
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p_instrument->set_filter_use_default_resonance(resonance&0x80);
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file->get_dword(); //MIDI, IGNORED!
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/* CPNote -> CPSample table */
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for (uint8_t i=0;i<CPNote::NOTES;i++) {
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uint8_t note=file->get_byte();
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if (note>=CPNote::NOTES)
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note=0;
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p_instrument->set_note_number(i,note);
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uint8_t samp=file->get_byte();
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if (samp==0 || samp>99)
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samp=CPNote::EMPTY;
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else
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samp--;
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p_instrument->set_sample_number(i,samp);
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}
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load_envelope( p_instrument->get_volume_envelope() );
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load_envelope( p_instrument->get_pan_envelope() );
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bool use_as_filter;
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load_envelope( p_instrument->get_pitch_filter_envelope(), &use_as_filter );
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p_instrument->set_pitch_use_as_filter( use_as_filter );
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return FILE_OK;
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}
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CPLoader::Error CPLoader_IT::load_instruments() {
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for (int i=0;i<header.insnum;i++) {
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file->seek(0xC0+header.ordnum+i*4);
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uint32_t final_location=file->get_dword();
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file->seek( final_location );
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Error err=load_instrument( song->get_instrument( i ) );
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if (err)
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return err;
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}
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return FILE_OK;
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if (file->eof_reached() || file->get_error())
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return FILE_CORRUPTED;
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}
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