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virtualx-engine/modules/chibi/cp_loader_s3m.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

413 lines
10 KiB
C++
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/*************************************************************************/
/* cp_loader_s3m.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_s3m.h"
#define BITBOOL(m_exp) ((m_exp)?1:0)
CPLoader::Error CPLoader_S3M::load_header() {
int i;
file->get_byte_array((uint8_t*)header.songname,28);
header.t1a=file->get_byte();
header.type=file->get_byte();
file->get_byte_array((uint8_t*)header.unused1,2);
header.ordnum=file->get_word();
header.insnum=file->get_word();
header.patnum=file->get_word();
header.flags=file->get_word();
header.tracker=file->get_word();
header.fileformat=file->get_word();
file->get_byte_array((uint8_t*)header.scrm,4);
header.scrm[4]=0;
if (header.scrm[0]!='S' || header.scrm[1]!='C' || header.scrm[2]!='R' || header.scrm[3]!='M')
return FILE_UNRECOGNIZED;
header.mastervol=file->get_byte();
header.initspeed=file->get_byte();
header.inittempo=file->get_byte();
header.mastermult=file->get_byte();
header.ultraclick=file->get_byte();
header.pantable=file->get_byte();
file->get_byte_array((uint8_t*)header.unused2,8);
header.special=file->get_word();
file->get_byte_array((uint8_t*)header.channels,32);
file->get_byte_array((uint8_t*)header.orderlist,header.ordnum);
header.scrm[4]=0;
if (header.scrm[0]!='S' || header.scrm[1]!='C' || header.scrm[2]!='R' || header.scrm[3]!='M') //again?
return FILE_UNRECOGNIZED;
//sample parapointers
for (i=0;i<header.insnum;i++) {
int parapointer;
parapointer=file->get_word();
parapointer=(parapointer*16);
sample_parapointers[i]=parapointer;
}
//pattern
for (i=0;i<header.patnum;i++) {
int parapointer;
parapointer=file->get_word();
parapointer=(parapointer*16);
pattern_parapointers[i]=parapointer;
}
if (header.pantable==252) {
file->get_byte_array((uint8_t*)header.pannings,32);
}
return FILE_OK;
}
void CPLoader_S3M::set_header() {
song->set_name( header.songname );
// song->variables.filename=
song->set_row_highlight_minor( 4 );
song->set_row_highlight_major( 16 );
song->set_mixing_volume( header.mastervol );
song->set_linear_slides( false );
song->set_old_effects( !(header.flags&64) );
song->set_compatible_gxx( true );
song->set_global_volume( header.mastermult );
song->set_speed( header.initspeed );
song->set_tempo( header.inittempo );
//[TODO] Set Panning Positions.. ?
for (int i=0;i<header.ordnum;i++) song->set_order(i,header.orderlist[i]);
}
CPLoader::Error CPLoader_S3M::load_sample(CPSample *p_sample) {
int type=file->get_byte();
char filename[13];
file->get_byte_array((uint8_t*)filename,12);
filename[12]=0;
uint32_t samplepos=(uint32_t)file->get_byte() << 16;
samplepos|=file->get_word();
samplepos*=16;
// printf("sample at %i\n",samplepos);
/**/
int sample_size=file->get_dword();
int loop_begin=file->get_dword();
int loop_end=file->get_dword();
int def_volume=file->get_byte();;
int dsk=file->get_byte();
int pack=file->get_byte();
int flags=file->get_byte();
int c2speed=file->get_dword();
file->get_dword(); //useless crap
file->get_dword();
file->get_dword();
char name[29];
file->get_byte_array((uint8_t*)name,28);
name[28]=0;
p_sample->set_default_volume(def_volume);
p_sample->set_name(name);
char scrs[5];
file->get_byte_array((uint8_t*)scrs,4);
scrs[4]=0;
bool data_is_16bits=flags&4;
bool data_is_stereo=flags&2;
if (type==0) {
//empty sample
return FILE_OK;
}
if ((type!=1) || scrs[0]!='S' || scrs[1]!='C' || scrs[2]!='R' || scrs[3]!='S' ) {
// printf("type: %i, %c%c%c%c\n",type,scrs[0],scrs[1],scrs[2],scrs[3]);
CP_PRINTERR("Not an S3M CPSample!");
return FILE_CORRUPTED;
}
//p_sample->data.set_c5_freq(p_sample->c2spd<<1);
file->seek(samplepos);
int real_sample_size=sample_size<<BITBOOL(data_is_16bits);
real_sample_size<<=BITBOOL(data_is_stereo);
CPSampleManager *sm=CPSampleManager::get_singleton();
CPSample_ID id =sm->create( data_is_16bits, data_is_stereo, sample_size );
if (id.is_null())
return FILE_OUT_OF_MEMORY;
sm->lock_data(id);
void *dataptr = sm->get_data(id);
int chans = (data_is_stereo?2:1);
for (int c=0;c<chans;c++) {
for (int i=0;i<sample_size;i++) {
if (data_is_16bits) {
uint16_t s=file->get_word();
s-=32768; //toggle sign
int16_t *v=(int16_t*)&s;
((int16_t*)dataptr)[i*chans+c]=*v;
} else {
int8_t *v;
uint8_t s=file->get_byte();
s-=128; //toggle sign
v=(int8_t*)&s;
((int8_t*)dataptr)[i*chans+c]=*v;
}
}
}
sm->unlock_data(id);
sm->set_loop_begin( id, loop_begin );
sm->set_loop_end( id, loop_end );
sm->set_loop_type( id, (flags&1) ? CP_LOOP_FORWARD : CP_LOOP_NONE );
sm->set_c5_freq( id, c2speed << 1 );
p_sample->set_sample_data(id);
/* Scream tracker previous to 3.10 seems to be buggy, as in, wont save what is after the sample loop, including the loop end point. Because of this I must fix it by habd */
if (flags&1) {
for (int c=0;c<(data_is_stereo?2:1);c++) {
sm->set_data( id, loop_end, sm->get_data( id, loop_begin,c ),c );
}
}
return FILE_OK;
}
CPLoader::Error CPLoader_S3M::load_pattern(CPPattern *p_pattern) {
int row=0,flag,ch;
CPNote n;
int length,accum=0;
length=file->get_word();
p_pattern->set_length(64);
/* clear pattern data */
while((row<64) && (accum<=length) ) {
flag=file->get_byte();
accum++;
n.clear();
if(flag) {
// ch=remap[flag&31];
// ch=remap[flag&31];
// if(ch!=-1)
// n=s3mbuf[(64U*ch)+row];
// else
// n=&dummy;
ch=flag&31;
if(flag&32) {
n.note=file->get_byte();
if (n.note==255) {
n.note=CPNote::EMPTY;
} else if (n.note==254) {
n.note=CPNote::CUT;
} else {
n.note=((n.note>>4)*12)+(n.note&0xF);
}
n.instrument=file->get_byte()-1;
accum+=2;
}
if(flag&64) {
n.volume=file->get_byte();
if (n.volume>64) n.volume=64;
accum++;
}
if(flag&128) {
n.command=file->get_byte()-1;
n.parameter=file->get_byte();
accum+=2;
}
p_pattern->set_note(ch,row,n);
} else row++;
}
return FILE_OK;
}
CPLoader::Error CPLoader_S3M::load_sample(const char *p_file,CPSample *p_sample) {
return FILE_UNRECOGNIZED;
}
CPLoader::Error CPLoader_S3M::load_instrument(const char *p_file,CPSong *p_song,int p_instr_idx) {
return FILE_UNRECOGNIZED;
}
CPLoader::Error CPLoader_S3M::load_samples() {
int i;
for(i=0;i<header.insnum;i++) {
file->seek(sample_parapointers[i]);
load_sample(song->get_sample(i));
sample_count++;
}
return FILE_OK;
}
CPLoader::Error CPLoader_S3M::load_patterns() {
int i;
Error err;
for(i=0;i<header.patnum;i++) {
file->seek(pattern_parapointers[i]);
err=load_pattern(song->get_pattern(i) );
CP_ERR_COND_V(err,err);
pattern_count++;
}
return FILE_OK;
}
CPLoader::Error CPLoader_S3M::load_song(const char *p_file,CPSong *p_song,bool p_sampleset) {
song=p_song;
if (file->open(p_file,CPFileAccessWrapper::READ)) {
//printf("Can't open file! %s\n",p_file);
return FILE_CANNOT_OPEN;
};
sample_count=0;
pattern_count=0;
//printf("LOADING HEADER\n");
CPLoader::Error err;
if ((err=load_header())) {
file->close();
CP_ERR_COND_V(err,err);
}
song->reset(); //file type recognized, reset song!
set_header();
//printf("LOADING SAMPLES\n");
if ((err=load_samples())) {
file->close();
CP_ERR_COND_V(err,err);
}
//printf("LOADING PATTERNS\n");
if ((err=load_patterns())) {
file->close();
return err;
}
file->close();
return FILE_OK;
}
CPLoader_S3M::CPLoader_S3M(CPFileAccessWrapper *p_file){
file=p_file;
}
CPLoader_S3M::~CPLoader_S3M(){
}
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