204 lines
7.2 KiB
C++
204 lines
7.2 KiB
C++
/*************************************************************************/
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/* cp_loader_it_instruments.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "cp_loader_it.h"
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enum EnvFlags {
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ENV_ON = 1,
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ENV_LOOP = 2,
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ENV_SUSLOOP = 4,
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ENV_CARRY = 8,
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ENV_FILTER = 128
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};
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void CPLoader_IT::load_envelope(CPEnvelope *p_envelope, bool *p_has_filter_flag) {
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uint8_t flags = file->get_byte();
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uint8_t points = file->get_byte();
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uint8_t begin = file->get_byte();
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uint8_t end = file->get_byte();
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uint8_t susbegin = file->get_byte();
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uint8_t susend = file->get_byte();
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p_envelope->reset();
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for (int i = 0; i < 25; i++) {
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uint8_t height = file->get_byte();
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int8_t &signed_height = (int8_t &)height;
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uint16_t tick = file->get_word();
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if (i >= points)
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continue;
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p_envelope->add_position(tick, signed_height);
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}
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p_envelope->set_enabled(flags & ENV_ON);
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p_envelope->set_carry_enabled(flags & ENV_CARRY);
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p_envelope->set_loop_enabled(flags & ENV_LOOP);
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p_envelope->set_loop_begin(begin);
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p_envelope->set_loop_end(end);
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p_envelope->set_sustain_loop_enabled(flags & ENV_SUSLOOP);
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p_envelope->set_sustain_loop_begin(susbegin);
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p_envelope->set_sustain_loop_end(susend);
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if (p_has_filter_flag)
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*p_has_filter_flag = flags & ENV_FILTER;
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file->get_byte(); //zerobyte
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//fill with stuff if the envelope hass less than 2 points
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while (p_envelope->get_node_count() < 2) {
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p_envelope->add_position(30 * p_envelope->get_node_count(), p_envelope->get_min() == 0 ? 64 : 0, false);
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}
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}
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CPLoader::Error CPLoader_IT::load_instrument(CPInstrument *p_instrument, int *p_samples) {
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char aux_header[4];
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file->get_byte_array((uint8_t *)aux_header, 4);
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if (aux_header[0] != 'I' ||
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aux_header[1] != 'M' ||
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aux_header[2] != 'P' ||
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aux_header[3] != 'I') {
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CP_PRINTERR("IT CPLoader CPInstrument: Failed Identifier");
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return FILE_UNRECOGNIZED;
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}
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// Ignore deprecated 8.3 filename field
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for (int i = 0; i < 12; i++)
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file->get_byte();
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//Ignore zerobyte
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file->get_byte(); /* (byte) CPInstrument type (always 0) */
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switch (file->get_byte()) { /* New CPNote Action [0,1,2,3] */
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case 0: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_CUT); break;
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case 1: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_CONTINUE); break;
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case 2: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_OFF); break;
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case 3: p_instrument->set_NNA_type(CPInstrument::NNA_NOTE_FADE); break;
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};
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switch (file->get_byte()) { // Duplicate Check Type
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case 0: p_instrument->set_DC_type(CPInstrument::DCT_DISABLED); break;
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case 1: p_instrument->set_DC_type(CPInstrument::DCT_NOTE); break;
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case 2: p_instrument->set_DC_type(CPInstrument::DCT_SAMPLE); break;
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case 3: p_instrument->set_DC_type(CPInstrument::DCT_INSTRUMENT); break;
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}
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switch (file->get_byte()) { //Duplicate Check Action
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case 0: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_CUT); break;
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case 1: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_OFF); break;
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case 2: p_instrument->set_DC_action(CPInstrument::DCA_NOTE_FADE); break;
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}
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int fade = file->get_word();
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//intf("AFADE: %i\n",fade);
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if (fade > CPInstrument::MAX_FADEOUT) //needs to be clipped because of horrible modplug doings
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fade = CPInstrument::MAX_FADEOUT;
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p_instrument->set_volume_fadeout(fade);
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p_instrument->set_pan_pitch_separation(file->get_byte());
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p_instrument->set_pan_pitch_center(file->get_byte());
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p_instrument->set_volume_global_amount(file->get_byte());
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uint8_t pan = file->get_byte();
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p_instrument->set_pan_default_amount(pan & 0x7F);
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p_instrument->set_pan_default_enabled(!(pan & 0x80));
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p_instrument->set_volume_random_variation(file->get_byte());
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p_instrument->set_pan_random_variation(file->get_byte());
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file->get_word(); //empty (version)
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uint8_t samples = file->get_byte();
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if (p_samples)
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*p_samples = samples;
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file->get_byte(); //empty
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char aux_name[26];
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file->get_byte_array((uint8_t *)aux_name, 26);
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p_instrument->set_name(aux_name);
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uint8_t cutoff = file->get_byte();
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p_instrument->set_filter_default_cutoff(cutoff & 0x7F);
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p_instrument->set_filter_use_default_cutoff(cutoff & 0x80);
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uint8_t resonance = file->get_byte();
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p_instrument->set_filter_default_resonance(resonance & 0x7F);
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p_instrument->set_filter_use_default_resonance(resonance & 0x80);
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file->get_dword(); //MIDI, IGNORED!
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/* CPNote -> CPSample table */
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for (uint8_t i = 0; i < CPNote::NOTES; i++) {
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uint8_t note = file->get_byte();
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if (note >= CPNote::NOTES)
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note = 0;
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p_instrument->set_note_number(i, note);
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uint8_t samp = file->get_byte();
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if (samp == 0 || samp > 99)
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samp = CPNote::EMPTY;
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else
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samp--;
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p_instrument->set_sample_number(i, samp);
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}
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load_envelope(p_instrument->get_volume_envelope());
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load_envelope(p_instrument->get_pan_envelope());
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bool use_as_filter;
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load_envelope(p_instrument->get_pitch_filter_envelope(), &use_as_filter);
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p_instrument->set_pitch_use_as_filter(use_as_filter);
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return FILE_OK;
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}
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CPLoader::Error CPLoader_IT::load_instruments() {
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for (int i = 0; i < header.insnum; i++) {
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file->seek(0xC0 + header.ordnum + i * 4);
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uint32_t final_location = file->get_dword();
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file->seek(final_location);
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Error err = load_instrument(song->get_instrument(i));
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if (err)
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return err;
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}
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return FILE_OK;
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if (file->eof_reached() || file->get_error())
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return FILE_CORRUPTED;
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}
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