godot/modules/chibi/cp_loader_it_instruments.cpp

206 lines
7.2 KiB
C++

/*************************************************************************/
/* cp_loader_it_instruments.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 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_it.h"
enum EnvFlags {
ENV_ON = 1,
ENV_LOOP = 2,
ENV_SUSLOOP = 4,
ENV_CARRY = 8,
ENV_FILTER = 128
};
void CPLoader_IT::load_envelope(CPEnvelope *p_envelope, bool *p_has_filter_flag) {
uint8_t flags = file->get_byte();
uint8_t points = file->get_byte();
uint8_t begin = file->get_byte();
uint8_t end = file->get_byte();
uint8_t susbegin = file->get_byte();
uint8_t susend = file->get_byte();
p_envelope->reset();
for (int i = 0; i < 25; i++) {
uint8_t height = file->get_byte();
int8_t &signed_height = (int8_t &)height;
uint16_t tick = file->get_word();
if (i >= points)
continue;
p_envelope->add_position(tick, signed_height);
}
p_envelope->set_enabled(flags & ENV_ON);
p_envelope->set_carry_enabled(flags & ENV_CARRY);
p_envelope->set_loop_enabled(flags & ENV_LOOP);
p_envelope->set_loop_begin(begin);
p_envelope->set_loop_end(end);
p_envelope->set_sustain_loop_enabled(flags & ENV_SUSLOOP);
p_envelope->set_sustain_loop_begin(susbegin);
p_envelope->set_sustain_loop_end(susend);
if (p_has_filter_flag)
*p_has_filter_flag = flags & ENV_FILTER;
file->get_byte(); //zerobyte
//fill with stuff if the envelope hass less than 2 points
while (p_envelope->get_node_count() < 2) {
p_envelope->add_position(30 * p_envelope->get_node_count(), p_envelope->get_min() == 0 ? 64 : 0, false);
}
}
CPLoader::Error CPLoader_IT::load_instrument(CPInstrument *p_instrument, int *p_samples) {
char aux_header[4];
file->get_byte_array((uint8_t *)aux_header, 4);
if (aux_header[0] != 'I' ||
aux_header[1] != 'M' ||
aux_header[2] != 'P' ||
aux_header[3] != 'I') {
CP_PRINTERR("IT CPLoader CPInstrument: Failed Identifier");
return FILE_UNRECOGNIZED;
}
// Ignore deprecated 8.3 filename field
for (int i = 0; i < 12; i++)
file->get_byte();
//Ignore zerobyte
file->get_byte(); /* (byte) CPInstrument type (always 0) */
switch (file->get_byte()) { /* New CPNote Action [0,1,2,3] */
case 0: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_CUT); break;
case 1: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_CONTINUE); break;
case 2: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_OFF); break;
case 3: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_FADE); break;
};
switch (file->get_byte()) { // Duplicate Check Type
case 0: p_instrument->set_DC_type(CPInstrument::DCT_DISABLED); break;
case 1: p_instrument->set_DC_type(CPInstrument::DCT_NOTE); break;
case 2: p_instrument->set_DC_type(CPInstrument::DCT_SAMPLE); break;
case 3: p_instrument->set_DC_type(CPInstrument::DCT_INSTRUMENT); break;
}
switch (file->get_byte()) { //Duplicate Check Action
case 0: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_CUT); break;
case 1: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_OFF); break;
case 2: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_FADE); break;
}
int fade = file->get_word();
//intf("AFADE: %i\n",fade);
if (fade > CPInstrument::MAX_FADEOUT) //needs to be clipped because of horrible modplug doings
fade = CPInstrument::MAX_FADEOUT;
p_instrument->set_volume_fadeout(fade);
p_instrument->set_pan_pitch_separation(file->get_byte());
p_instrument->set_pan_pitch_center(file->get_byte());
p_instrument->set_volume_global_amount(file->get_byte());
uint8_t pan = file->get_byte();
p_instrument->set_pan_default_amount(pan & 0x7F);
p_instrument->set_pan_default_enabled(!(pan & 0x80));
p_instrument->set_volume_random_variation(file->get_byte());
p_instrument->set_pan_random_variation(file->get_byte());
file->get_word(); //empty (version)
uint8_t samples = file->get_byte();
if (p_samples)
*p_samples = samples;
file->get_byte(); //empty
char aux_name[26];
file->get_byte_array((uint8_t *)aux_name, 26);
p_instrument->set_name(aux_name);
uint8_t cutoff = file->get_byte();
p_instrument->set_filter_default_cutoff(cutoff & 0x7F);
p_instrument->set_filter_use_default_cutoff(cutoff & 0x80);
uint8_t resonance = file->get_byte();
p_instrument->set_filter_default_resonance(resonance & 0x7F);
p_instrument->set_filter_use_default_resonance(resonance & 0x80);
file->get_dword(); //MIDI, IGNORED!
/* CPNote -> CPSample table */
for (uint8_t i = 0; i < CPNote::NOTES; i++) {
uint8_t note = file->get_byte();
if (note >= CPNote::NOTES)
note = 0;
p_instrument->set_note_number(i, note);
uint8_t samp = file->get_byte();
if (samp == 0 || samp > 99)
samp = CPNote::EMPTY;
else
samp--;
p_instrument->set_sample_number(i, samp);
}
load_envelope(p_instrument->get_volume_envelope());
load_envelope(p_instrument->get_pan_envelope());
bool use_as_filter;
load_envelope(p_instrument->get_pitch_filter_envelope(), &use_as_filter);
p_instrument->set_pitch_use_as_filter(use_as_filter);
return FILE_OK;
}
CPLoader::Error CPLoader_IT::load_instruments() {
for (int i = 0; i < header.insnum; i++) {
file->seek(0xC0 + header.ordnum + i * 4);
uint32_t final_location = file->get_dword();
file->seek(final_location);
Error err = load_instrument(song->get_instrument(i));
if (err)
return err;
}
return FILE_OK;
if (file->eof_reached() || file->get_error())
return FILE_CORRUPTED;
}