/*************************************************************************/
/* cp_loader_xm.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 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_xm.h"
#include "cp_tables.h"
#define ABORT_LOAD { file->close(); return FILE_CORRUPTED; }
CPLoader::Error CPLoader_XM::load_song(const char *p_file,CPSong *p_song,bool p_sampleset) {
song=p_song;
if (file->open(p_file,CPFileAccessWrapper::READ)) {
return FILE_CANNOT_OPEN;
};
/**************************************
LOAD HEADER
***************************************/
file->get_byte_array(header.idtext,17);
header.idtext[17]=0;
file->get_byte_array(header.songname,20);
header.songname[20]=0;
header.hex1a=file->get_byte();
if (header.hex1a!=0x1A) { //XM "magic" byte.. this sucks :)
file->close();
return FILE_UNRECOGNIZED;
}
//magic byte sucks, but can't do much about it..
song->reset(); //must reset the song
song->set_name( (const char*)header.songname );
file->get_byte_array(header.trackername,20);
header.trackername[20]=0;
header.version=file->get_word();
header.headersize=file->get_dword();
header.songlength=file->get_word();
header.restart_pos=file->get_word();
header.channels_used=file->get_word();
header.patterns_used=file->get_word();
header.instruments_used=file->get_word();
song->set_linear_slides( file->get_word() );
song->set_speed( file->get_word() );
song->set_tempo( file->get_word() );
song->set_instruments( true );
file->get_byte_array(header.orderlist,256);
for (int i=0;i<header.songlength;i++) {
if (i>199)
break;
song->set_order(i,header.orderlist[i]);
}
/**************************************
LOAD PATTERNS
***************************************/
for (int i=0;i<header.patterns_used;i++) {
uint32_t aux,rows;
aux=file->get_dword(); //length
aux=file->get_byte(); //packing type
rows=aux=file->get_word(); //rows!
song->get_pattern(i)->set_length( aux );
aux=file->get_word(); //packed size
if (aux==0)
continue;
//unpaaack!
for(int j=0;j<(int)rows;j++)
for(int k=0;k<header.channels_used;k++) {
CPNote aux_note;
uint8_t aux_byte;
//uint8_t field;
aux_byte=file->get_byte(); //packing type
if (!(aux_byte&0x80)) {
aux_note.note=aux_byte;
aux_byte=0xFE; //if bit 7 not set, read all of them except the note
}
if (aux_byte&1) aux_note.note=file->get_byte();
if (aux_byte&2) aux_note.instrument=file->get_byte();
if (aux_byte&4) aux_note.volume=file->get_byte();
if (aux_byte&8) aux_note.command=file->get_byte();
if (aux_byte&16) aux_note.parameter=file->get_byte();
if (aux_note.note!=CPNote::EMPTY) {
if (aux_note.note==97) aux_note.note=CPNote::OFF;
else {
aux_note.note+=11; //octave minus one (XM C-0 is 1, not zero )
}
}
if (aux_note.instrument!=CPNote::EMPTY) {
if ((aux_note.instrument>0) && (aux_note.instrument<100))
aux_note.instrument--;
else
aux_note.instrument=CPNote::EMPTY;
}
if (aux_note.volume!=CPNote::EMPTY) {
if (aux_note.volume<0x10) {}
else if (aux_note.volume<0x50) {
aux_note.volume-=0x10;
} else if (aux_note.volume<0x60) {
//
aux_note.volume=CPNote::EMPTY;
} else if (aux_note.volume<0x70) {
//60 -- volume slide down
aux_note.volume-=0x60;
if (aux_note.volume>9) aux_note.volume=9;
aux_note.volume+=95;
} else if (aux_note.volume<0x80) {
//70 -- volume slide up
aux_note.volume-=0x70;
if (aux_note.volume>9) aux_note.volume=9;
aux_note.volume+=85;
} else if (aux_note.volume<0x90) {
//80 -- fine volume slide down
aux_note.volume-=0x80;
if (aux_note.volume>9) aux_note.volume=9;
aux_note.volume+=75;
} else if (aux_note.volume<0xA0) {
//9 -- fine volume slide up
aux_note.volume-=0x90;
if (aux_note.volume>9) aux_note.volume=9;
aux_note.volume+=65;
} else if (aux_note.volume<0xB0) {
//A -- set vibrato speed
aux_note.volume=CPNote::EMPTY;
} else if (aux_note.volume<0xC0) {
//B -- vibrato
aux_note.volume-=0xB0;
if (aux_note.volume>9) aux_note.volume=9;
aux_note.volume+=203;
} else if (aux_note.volume<0xD0) {
//C -- set panning
int aux=aux_note.volume-=0xC0;
aux=aux*65/0xF;
aux_note.volume=128+aux;
} else if (aux_note.volume<0xE0) {
aux_note.volume=CPNote::EMPTY;
} else if (aux_note.volume<0xF0) {
aux_note.volume=CPNote::EMPTY;
} else {
//F -- tone porta
aux_note.volume-=0xF0;
aux_note.volume*=9;
aux_note.volume/=0xF;
aux_note.volume+=193;
}
}
if (aux_note.command!=CPNote::EMPTY) {
switch(aux_note.command) {
case 0x0:
aux_note.command='J'-'A';
break;
case 0x1:
aux_note.command='F'-'A';
break;
case 0x2:
aux_note.command='E'-'A';
break;
case 0x3:
aux_note.command='G'-'A';
break;
case 0x4:
aux_note.command='H'-'A';
break;
case 0x5:
aux_note.command='L'-'A';
break;
case 0x6:
aux_note.command='K'-'A';
break;
case 0x7:
aux_note.command='R'-'A';
break;
case 0x8:
aux_note.command='X'-'A';
break;
case 0x9:
aux_note.command='O'-'A';
break;
case 0xa:
aux_note.command='D'-'A';
break;
case 0xb:
aux_note.command='B'-'A';
break;
case 0xc:
//printf("XM Import: Warning! effect C (set volume) not implemented!\n");
break;
case 0xd:
aux_note.command='C'-'A';
break;
case 0xe: /* Extended effects */
aux_note.command='S'-'A';
switch(aux_note.parameter>>4) {
case 0x1: /* XM fine porta up */
if (!(aux_note.parameter&0xF)) { aux_note.command=CPNote::EMPTY; aux_note.parameter=0; break; }
aux_note.command='F'-'A';
aux_note.parameter=0xF0|(aux_note.parameter&0xF);
break;
case 0x2: /* XM fine porta down */
if (!(aux_note.parameter&0xF)) { aux_note.command=CPNote::EMPTY; aux_note.parameter=0; break; }
aux_note.command='E'-'A';
aux_note.parameter=0xF0|(aux_note.parameter&0xF);
break;
case 0xa: /* XM fine volume up */
if (!(aux_note.parameter&0xF)) { aux_note.command=CPNote::EMPTY; aux_note.parameter=0; break; }
aux_note.command='D'-'A';
aux_note.parameter=0x0F|((aux_note.parameter&0xF)<<4);
break;
case 0xb: /* XM fine volume down */
if (!(aux_note.parameter&0xF)) { aux_note.command=CPNote::EMPTY; aux_note.parameter=0; break; }
aux_note.command='D'-'A';
aux_note.parameter=0xF0|(aux_note.parameter&0xF);
break;
case 0x9: /* XM fine volume down */
if (!(aux_note.parameter&0xF)) { aux_note.command=CPNote::EMPTY; aux_note.parameter=0; break; }
aux_note.command='Q'-'A';
aux_note.parameter=0x00|(aux_note.parameter&0xF);
break;
case 0xc: //notecut
aux_note.parameter=0xC0|(aux_note.parameter&0xF);
break;
case 0xd: //notedelay
aux_note.parameter=0xD0|(aux_note.parameter&0xF);
break;
case 0xe: //patterndelay
aux_note.parameter=0xE0|(aux_note.parameter&0xF);
break;
}
break;
case 0xf:
if (aux_note.parameter<32) {
aux_note.command='A'-'A';
} else {
aux_note.command='T'-'A';
}
break;
case 'G'-55:
aux_note.command='V'-'A';
break;
case 'H'-55:
aux_note.command='W'-'A';
break;
case 'K'-55:
if (aux_note.note!=CPNote::EMPTY) break;
aux_note.note=CPNote::OFF;
break;
case 'P'-55:
aux_note.command='P'-'A';
break;
case 'R'-55:
aux_note.command='Q'-'A';
break;
case 'T'-55:
aux_note.command='I'-'A';
break;
default: {
aux_note.command=CPNote::EMPTY;
}
}
}
song->get_pattern( i)->set_note( k,j,aux_note );
}
}
/**************************************
LOAD INSTRUMENTS!
***************************************/
for (int i=0;i<header.instruments_used;i++) {
uint32_t aux;
int sampnum;
CPInstrument &instrument=*song->get_instrument(i);
uint32_t cpos=file->get_pos();
//printf("pos is %i\n",cpos);
/* +4 */ uint32_t hsize=file->get_dword(); //header length
char instrname[23];
instrname[22]=0;
file->get_byte_array((uint8_t*)instrname,22);
//XM_LOAD_DEBUG printf("name is %s\n",instrname);
/* +27 */ aux=file->get_byte(); //byte that must be ignored
//XM_LOAD_DEBUG printf("header size is %i\n",hsize);
/* +29 */ sampnum=file->get_word();
//XM_LOAD_DEBUG printf("samples %i\n",sampnum);
instrument.set_name( instrname );
// printf("Header Len: %i, CPInstrument %i, %i samples , name: s,\n",hsize,i,sampnum,instrname);
if (sampnum==0) {
//aux=file->get_dword(); //Why is this for? -- for nothing, skipped
if (hsize) {
file->seek( cpos+hsize ); //skip header if size has been specified
}
continue;
}
/* +33 */ file->get_dword();
if (Error result=load_instrument_internal(&instrument,false,cpos,hsize,sampnum)) {
CP_PRINTERR("Error loading instrument");
file->close();
return result;
}
}
//
file->close();
return FILE_OK;
}
CPLoader::Error CPLoader_XM::load_instrument_internal(CPInstrument *p_instr,bool p_xi,int p_cpos, int p_hsize, int p_sampnum) {
int sampnum;
uint32_t aux;
uint8_t notenumb[96];
uint16_t panenv[24],volenv[24];
int volpoints,panpoints;
int vol_loop_begin,vol_loop_end,vol_sustain_loop;
int pan_loop_begin,pan_loop_end,pan_sustain_loop;
char instrname[23];
int sample_index[16]={-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1}; //-1 means no index!
instrname[22]=0;
/* +129 */ file->get_byte_array((uint8_t*)notenumb,96);
for (int j=0;j<24;j++) {
volenv[j]=file->get_word();
}
for (int j=0;j<24;j++) {
panenv[j]=file->get_word();
}
/* +177 */
/* +225 */
/* +226 */ volpoints=file->get_byte();
/* +227 */ panpoints=file->get_byte();
/* +230 */ vol_sustain_loop=file->get_byte();
/* +228 */ vol_loop_begin=file->get_byte();
/* +229 */ vol_loop_end=file->get_byte();
//XM_LOAD_DEBUG printf("1- volpoints: %i, panpoints: %i, susloop: %i, loop begin: %i, loop end %i\n",volpoints,panpoints,vol_sustain_loop,vol_loop_begin,vol_loop_end);
pan_sustain_loop=file->get_byte();
/* +231 */ pan_loop_begin=file->get_byte();
/* +232 */ pan_loop_end=file->get_byte();
/* +234 */ aux=file->get_byte();
p_instr->get_volume_envelope()->reset();
p_instr->get_volume_envelope()->set_enabled(aux&1);
p_instr->get_volume_envelope()->set_sustain_loop_enabled((aux&2)?true:false);
p_instr->get_volume_envelope()->set_loop_enabled((aux&4)?true:false);
/* +235 */ aux=file->get_byte();
p_instr->get_pan_envelope()->reset();
p_instr->get_pan_envelope()->set_enabled(aux&1);
p_instr->get_pan_envelope()->set_sustain_loop_enabled((aux&2)?true:false);
p_instr->get_pan_envelope()->set_loop_enabled((aux&4)?true:false);
/* +239 */ aux=file->get_dword(); // sadly, cant use those
/* +241 */ p_instr->set_volume_fadeout( file->get_word() >> 4 );
/* +243 */ aux=file->get_word(); // reserved!
for (int j=0;j<volpoints;j++) {
int ofs=volenv[j*2];
int val=volenv[j*2+1];
p_instr->get_volume_envelope()->add_position(ofs,val);
}
//make sure minimum is 2
while (p_instr->get_volume_envelope()->get_node_count()<2) {
p_instr->get_volume_envelope()->add_position( p_instr->get_volume_envelope()->get_node_count()*20,64 );
}
for (int j=0;j<panpoints;j++) {
int ofs=panenv[j*2];
int val=panenv[j*2+1];
p_instr->get_pan_envelope()->add_position(ofs,val-32);
}
//make sure minimum is 2
while (p_instr->get_pan_envelope()->get_node_count()<2) {
p_instr->get_pan_envelope()->add_position( p_instr->get_pan_envelope()->get_node_count()*20,0 );
}
p_instr->get_volume_envelope()->set_loop_begin(vol_loop_begin);
p_instr->get_volume_envelope()->set_loop_end(vol_loop_end);
p_instr->get_volume_envelope()->set_sustain_loop_end(vol_sustain_loop);
p_instr->get_volume_envelope()->set_sustain_loop_begin(vol_sustain_loop);
p_instr->get_pan_envelope()->set_loop_begin(pan_loop_begin);
p_instr->get_pan_envelope()->set_loop_end(pan_loop_end);
p_instr->get_pan_envelope()->set_sustain_loop_end(pan_sustain_loop);
p_instr->get_pan_envelope()->set_sustain_loop_begin(pan_sustain_loop);
if (!p_xi) {
if ((file->get_pos()-p_cpos)<p_hsize) {
uint8_t junkbuster[500];
//printf("extra junk XM instrument in header! hsize is %i, extra junk: %i\n",p_hsize,(file->get_pos()-p_cpos));
//printf("extra: %i\n",p_hsize-(file->get_pos()-p_cpos));
file->get_byte_array((uint8_t*)junkbuster,p_hsize-(file->get_pos()-p_cpos));
}
sampnum=p_sampnum;
} else {
uint8_t junkbuster[500];
file->get_byte_array((uint8_t*)junkbuster,20); //14 bytes?
sampnum=file->get_word();
}
CPSampleManager *sm=CPSampleManager::get_singleton();
/*SAMPLE!!*/
for (int j=0;j<sampnum;j++) {
if (j>16) ABORT_LOAD;
int s_idx=-1;
for (int s=0;s<CPSong::MAX_SAMPLES;s++) {
if (song->get_sample(s)->get_sample_data().is_null()) {
//empty sample!
s_idx=s;
break;
}
}
if (s_idx==-1) ABORT_LOAD;
//printf("free sample: %i\n",s_idx);
char auxb;
CPSample& sample=*song->get_sample(s_idx);
int sample_size=file->get_dword();
int tmp_loop_begin=file->get_dword();
int tmp_loop_end=file->get_dword();
sample.set_default_volume(file->get_byte());
uint8_t ftb=file->get_byte();
int8_t *fts=(int8_t*)&ftb;
int finetune=*fts;
uint32_t flags=file->get_byte();
if (flags&16) { // is 16 bits.. at flag 16.. fun :)
tmp_loop_end/=2;
tmp_loop_begin/=2;
sample_size/=2;
}
CPSample_ID sample_data=sm->create( flags&16, false, sample_size );
sample.set_sample_data(sample_data);
sm->set_loop_begin(sample_data,tmp_loop_begin);
sm->set_loop_end(sample_data,tmp_loop_end+tmp_loop_begin);
sm->set_loop_type( sample_data, (flags&3)?( (flags&2) ? CP_LOOP_BIDI : CP_LOOP_FORWARD ):CP_LOOP_NONE );
sample.set_pan_enabled(true);
sample.set_pan(file->get_byte()*64/255);
uint8_t noteb=file->get_byte();
int8_t *notes=(int8_t*)¬eb;
int note_offset=*notes;
note_offset+=48;
//note_offset+=60;
//int linear_period=10*12*16*4 - (note_offset)*16*4 - finetune/2;
//int freq=(int)(8363*pow(2.0,(double)(6*12*16*4 - linear_period) / (double)(12*16*4)));
//sm->set_c5_freq( sample_data, freq);
sm->set_c5_freq( sample_data, CPTables::get_linear_frequency(CPTables::get_linear_period(note_offset<<1,finetune)) );
//printf("NOTE %i,fine %i\n",note_offset,finetune);
auxb=file->get_byte(); //reserved?
file->get_byte_array((uint8_t*)instrname,22);
sample.set_name(instrname);
sample_index[j]=s_idx;
}
/*SAMPLE __DATA__!!*/
for (int j=0;j<sampnum;j++) {
if (sample_index[j]==-1) continue;
CPSample *sample=song->get_sample(sample_index[j]);
CPSample_ID sid=sample->get_sample_data();
sm->lock_data(sid);
void*dataptr=sm->get_data(sid);
if (sm->is_16bits( sid)) {
int16_t old=0;
for (int k=0;k<sm->get_size(sid);k++) {
int16_t newsample;
int16_t sampleval=file->get_word();
newsample=sampleval+old;
old=newsample;
((int16_t*)dataptr)[k]=newsample;
//sm->set_data( sid, k, newsample );
}
} else {
int8_t old=0;
for (int k=0;k<sm->get_size(sid);k++) {
int8_t newsample;
int8_t sampleval=file->get_byte();
newsample=sampleval+old;
old=newsample;
((int8_t*)dataptr)[k]=newsample;
//sm->set_data( sid, k, (int16_t)newsample << 8 );
}
}
sm->unlock_data(sid);
}
for (int j=0;j<96;j++) {
int val=notenumb[j];
if ((val<0) || (val>15)) continue;
else val=sample_index[val];
if (val==-1) continue;
p_instr->set_sample_number( 12+j,val );
}
return FILE_OK;
}
CPLoader::Error CPLoader_XM::load_sample(const char *p_file,CPSample *p_sample) {
return FILE_UNRECOGNIZED;
}
/* Compute CPInstrument Info */
CPLoader::Error CPLoader_XM::load_instrument(const char *p_file,CPSong *p_song,int p_instr_idx) {
if ( file->open(p_file,CPFileAccessWrapper::READ) ) return FILE_CANNOT_OPEN;
//int i;
song=p_song;
CPInstrument& instr=*p_song->get_instrument( p_instr_idx );
int aux;
char buffer[500];
file->get_byte_array((uint8_t*)buffer,0x15);
buffer[8]=0;
if ( buffer[0]!='E' ||
buffer[1]!='x' ||
buffer[2]!='t' ||
buffer[3]!='e' ||
buffer[4]!='n' ||
buffer[5]!='d' ||
buffer[6]!='e' ||
buffer[7]!='d') {
file->close();
return FILE_UNRECOGNIZED;
}
file->get_byte_array((uint8_t*)buffer,0x16);
buffer[0x16]=0;
instr.set_name(buffer);
aux=file->get_byte(); //says ignore ti
/*if(aux!=0x1a) { I'm not sure. this is supposed to be ignored...
file->close();
return FILE_UNRECOGNIZED;
} */
file->get_byte_array((uint8_t*)buffer,0x14); //somethingaboutthename
aux=file->get_word(); //version or blahblah
if (load_instrument_internal(&instr,true,0,0)) {
file->close();
return FILE_CORRUPTED;
}
file->close(); //ook, we got it..
return FILE_OK;
}
CPLoader_XM::CPLoader_XM(CPFileAccessWrapper *p_file){
file=p_file;
}
CPLoader_XM::~CPLoader_XM(){
}