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godot/modules/chibi/cp_loader_s3m.cpp

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/*************************************************************************/
/* cp_loader_s3m.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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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