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virtualx-engine/modules/chibi/cp_loader_mod.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader! 
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

482 lines
11 KiB
C++
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/*************************************************************************/
/* cp_loader_mod.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 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_mod.h"
static bool tag_equal_to(const char *p_tag, const char *p_string) {
return( p_tag[0]==p_string[0] &&
p_tag[1]==p_string[1] &&
p_tag[2]==p_string[2] &&
p_tag[3]==p_string[3]);
}
/* ProTracker period table */
uint16_t period_table[6*12] = {
1712,1616,1524,1440,1356,1280,1208,1140,1076,1016,960,907,
856,808,762,720,678,640,604,570,538,508,480,453,
428,404,381,360,339,320,302,285,269,254,240,226,
214,202,190,180,170,160,151,143,135,127,120,113,
107,101,95,90,85,80,75,71,67,63,60,56,
53,50,47,45,42,40,37,35,33,31,30,28
};
CPLoader::Error CPLoader_MOD::load_song(const char *p_file,CPSong *p_song,bool p_sampleset) {
if (file->open(p_file,CPFileAccessWrapper::READ)) {
//printf("Can't open file! %s\n",p_file);
return FILE_CANNOT_OPEN;
};
/* FIRST OF ALL, one needs to read the .mod file format tag */
file->seek( 1080 ); //located at 1080
char format_tag[4];
file->get_byte_array( (uint8_t*)format_tag, 4 );
int channels=-1;
/** THE PAIN!! - COMPARE TAGS */
/* Classic 4-chan */
if (tag_equal_to(format_tag,"M.K.") )
channels=4;
if (tag_equal_to(format_tag,"FLT4") )
channels=4;
if (tag_equal_to(format_tag,"M!K!") )
channels=4;
/* 8 Channel MODS */
if (tag_equal_to(format_tag,"FLT8") )
channels=2;
if (tag_equal_to(format_tag,"CD81") )
channels=2;
/* Custom channel MODS */
for (int i=1;i<=32;i++) {
if (i<10) { // up to 9 channels mods
/* Old Take Tracker */
char old_take_tracker[4]={'T','D','Z',char('0'+i)};
if (tag_equal_to(format_tag,old_take_tracker)) {
channels=i;
break;
}
/* Contemplates many XCHN Formats */
char xchn[4]={char('0'+i),'C','H','N'};
if (tag_equal_to(format_tag,xchn)) {
channels=i;
break;
}
}
/* Fast Tracker */
char fast_tracker[4]={char('0'+(i/10)),char('0'+(i%10)),'C','H'};
if (tag_equal_to(format_tag,fast_tracker)) {
channels=i;
break;
}
}
if (channels==-1) {
file->close();
return FILE_UNRECOGNIZED;
}
/** Load CPSong INFO */
file->seek( 0 ); //go to begining of file
file->set_endian_conversion( true );
p_song->reset();
p_song->set_instruments( false );
char name[21];
file->get_byte_array( (uint8_t*)name,20);
name[20]=0;
p_song->set_name(name);
p_song->set_old_effects( true );
p_song->set_linear_slides( false );
p_song->set_compatible_gxx( true );
CPSampleManager *sm=CPSampleManager::get_singleton();
int instruments=31;
for (int i=0;i<instruments;i++) {
char sample_name[23];
file->get_byte_array( (uint8_t*)sample_name,22);
sample_name[22]=0;
uint32_t sample_len=file->get_word();
sample_len<<=1;
uint8_t fine_nibble=file->get_byte()&0xF;
//(int8_t)(fine_nibble & 7) - (int8_t)(fine_nibble & 8); //yesso's genius trick
// boo, I can't use it :( but i leave it here because of how cool it is
uint8_t linear_volume=file->get_byte(); //0 .. ?
uint32_t loop_begin=file->get_word(); //0 .. ?
loop_begin<<=1;
uint32_t loop_end=file->get_word(); //0 .. ?
loop_end<<=1;
if (sample_len>0) {
CPSample_ID sid=sm->create( false, false, sample_len );
if (sid.is_null()) {
file->close();
return FILE_OUT_OF_MEMORY;
}
if (loop_end>2) {
sm->set_loop_begin( sid, loop_begin );
sm->set_loop_end( sid, loop_end+loop_begin );
sm->set_loop_type( sid,CP_LOOP_FORWARD );
}
static const uint16_t fine_to_freq[16]={
8363,8413,8463,8529,8581,8651,8723,8757,
7895,7941,7985,8046,8107,8169,8232,8280
};
sm->set_c5_freq( sid, fine_to_freq[fine_nibble] );
p_song->get_sample(i)->set_sample_data(sid);
}
p_song->get_sample(i)->set_name(sample_name);
p_song->get_sample(i)->set_default_volume( linear_volume );
}
/* pan for MODs */
for (int i=0;i<channels;i++)
p_song->set_channel_pan( i, (((i&3)==1) || ((i&3)==2)) ? 0: 64);
uint8_t order_count=file->get_byte();
// uint8_t loop_to=file->get_byte();
int pattern_count=0;
for (int i=0;i<128;i++) {
uint8_t order=file->get_byte();
if (i<order_count) {
p_song->set_order(i,order);
/* Determine the amount of patterns */
if ((order+1)>pattern_count)
pattern_count=order+1;
} else
p_song->set_order( i, CP_ORDER_NONE );
}
if (instruments==31)
file->get_dword(); // identiefier, now skip it
for (int i=0;i<pattern_count;i++) {
for(int line=0;line<64;line++) {
for(int column=0;column<channels;column++) {
uint32_t note_w=file->get_dword();
CPNote note;
note.instrument=(note_w>>12)&0xF;
note.instrument|=(note_w>>24)&0xF0;
if (note.instrument==0)
note.instrument=CPNote::EMPTY;
else
note.instrument--;
note.parameter=note_w&0xFF;
int cmd=(note_w>>8)&0xF;
uint32_t period=(note_w>>16)&0xFFF;
if (period>0 && period<0xFFF) {
//period>>=2;
//period<<=1;
for (int n=0; n<6*12; n++) {
if (period >= period_table[n]) {
if ((period!=period_table[n]) && (n))
{
uint32_t p1 = period_table[n-1];
uint32_t p2 = period_table[n];
if (p1 - period < (period - p2)) {
note.note=n+36;
break;
}
}
note.note=n+1+36;
break;
}
}
if (note.note==CPNote::EMPTY)
note.note=6*12+36;
note.note--;
}
switch(cmd) {
case 0x0: {
if (note.parameter>0)
note.command='J'-'A';
} break;
case 0x1: {
note.command='F'-'A';
} break;
case 0x2: {
note.command='E'-'A';
} break;
case 0x3: {
note.command='G'-'A';
} break;
case 0x4: {
note.command='H'-'A';
} break;
case 0x5: {
note.command='L'-'A';
} break;
case 0x6: {
note.command='K'-'A';
} break;
case 0x7: {
note.command='R'-'A';
} break;
case 0x8: {
note.command='X'-'A';
} break;
case 0x9: {
note.command='O'-'A';
} break;
case 0xA: {
note.command='D'-'A';
} break;
case 0xB: {
note.command='B'-'A';
} break;
case 0xC: {
note.volume=note.parameter;
if (note.volume>64)
note.volume=64;
note.parameter=0;
} break;
case 0xD: {
note.command='C'-'A';
note.parameter=(note.parameter>>4)*10 + (note.parameter&0xF);
} break;
case 0xE: { //SPECIAL EFFECT!
note.command='S'-'A';
switch(note.parameter>>4) {
case 0x1: {
note.command='F'-'A';
note.parameter=0xF0|(note.parameter&0xF);
} break;
case 0x2: {
note.command='E'-'A';
note.parameter=0xF0|(note.parameter&0xF);
} break;
case 0x4: {
note.command='S'-'A';
note.parameter=0x30|(note.parameter&0x3);
} break;
case 0x6: {
note.command='S'-'A';
note.parameter=0xB0|(note.parameter&0xF);
} break;
case 0x7: {
note.command='S'-'A';
note.parameter=0x40|(note.parameter&0x3);
} break;
case 0x8: {
note.command='S'-'A'; // wow, it's the same!
} break;
case 0x9: {
note.command='Q'-'A';
note.parameter=(note.parameter&0xF);
} break;
case 0xA: {
note.command='D'-'A';
note.parameter=0xF|((note.parameter&0xF)<<4);
} break;
case 0xB: {
note.command='D'-'A';
note.parameter=0xF0|(note.parameter&0xF);
} break;
case 0xC:
case 0xD: {
note.command='S'-'A'; //wow, they are the same!
} break;
case 0xE: {
note.command='S'-'A';
note.parameter=0x60|(note.parameter&0xF);
} break;
default: {
note.command=CPNote::EMPTY;
note.parameter=0;
} break;
}
} break;
case 0xF: {
if (note.parameter<32)
note.command='A'-'A';
else
note.command='T'-'A';
} break;
}
p_song->get_pattern(i)->set_note( column,line, note );
}
}
}
for (int i=0;i<instruments;i++) {
CPSample_ID sid=p_song->get_sample(i)->get_sample_data();
if (sid.is_null()) {
continue; //empty sample, not stored?
}
sm->lock_data(sid);
uint8_t *dataptr = (uint8_t*)sm->get_data(sid);
int len=sm->get_size(sid);
for (int s=0;s<len;s++) {
uint8_t d=file->get_byte();
//d-=128; //convert to signed
int8_t*ds=(int8_t*)&d;
dataptr[s]=*ds;
}
sm->unlock_data(sid);
}
file->close();
return FILE_OK;
}
CPLoader_MOD::CPLoader_MOD(CPFileAccessWrapper *p_file) {
file=p_file;
}
CPLoader_MOD::~CPLoader_MOD()
{
}
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