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125 lines
4.8 KiB
C
125 lines
4.8 KiB
C
/* _______ ____ __ ___ ___
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* \ _ \ \ / \ / \ \ / / ' ' '
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* | | \ \ | | || | \/ | . .
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* | | | | | | || ||\ /| |
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* | | | | | | || || \/ | | ' ' '
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* | | | | | | || || | | . .
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* | |_/ / \ \__// || | |
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* /_______/ynamic \____/niversal /__\ /____\usic /| . . ibliotheque
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* / \
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* / . \
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* ptmeffect.c - Code for converting PTM / / \ \
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* effects to IT effects. | < / \_
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* | \/ /\ /
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* By Chris Moeller. Based on xmeffect.c \_ / > /
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* by Julien Cugniere. | \ / /
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* | ' /
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* \__/
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "dumb.h"
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#include "internal/it.h"
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void _dumb_it_ptm_convert_effect(int effect, int value, IT_ENTRY *entry)
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{
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if (effect >= PTM_N_EFFECTS)
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return;
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/* Linearisation of the effect number... */
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if (effect == PTM_E) {
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effect = PTM_EBASE + HIGH(value);
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value = LOW(value);
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}
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/* convert effect */
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entry->mask |= IT_ENTRY_EFFECT;
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switch (effect) {
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case PTM_APPREGIO: effect = IT_ARPEGGIO; break;
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case PTM_PORTAMENTO_UP: effect = IT_PORTAMENTO_UP; break;
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case PTM_PORTAMENTO_DOWN: effect = IT_PORTAMENTO_DOWN; break;
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case PTM_TONE_PORTAMENTO: effect = IT_TONE_PORTAMENTO; break;
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case PTM_VIBRATO: effect = IT_VIBRATO; break;
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case PTM_VOLSLIDE_TONEPORTA: effect = IT_VOLSLIDE_TONEPORTA; break;
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case PTM_VOLSLIDE_VIBRATO: effect = IT_VOLSLIDE_VIBRATO; break;
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case PTM_TREMOLO: effect = IT_TREMOLO; break;
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case PTM_SAMPLE_OFFSET: effect = IT_SET_SAMPLE_OFFSET; break;
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case PTM_VOLUME_SLIDE: effect = IT_VOLUME_SLIDE; break;
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case PTM_POSITION_JUMP: effect = IT_JUMP_TO_ORDER; break;
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case PTM_SET_CHANNEL_VOLUME: effect = IT_SET_CHANNEL_VOLUME; break;
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case PTM_PATTERN_BREAK: effect = IT_BREAK_TO_ROW; break;
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case PTM_SET_GLOBAL_VOLUME: effect = IT_SET_GLOBAL_VOLUME; break;
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case PTM_RETRIGGER: effect = IT_RETRIGGER_NOTE; break;
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case PTM_FINE_VIBRATO: effect = IT_FINE_VIBRATO; break;
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/* TODO properly */
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case PTM_NOTE_SLIDE_UP: effect = IT_PTM_NOTE_SLIDE_UP; break;
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case PTM_NOTE_SLIDE_DOWN: effect = IT_PTM_NOTE_SLIDE_DOWN; break;
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case PTM_NOTE_SLIDE_UP_RETRIG: effect = IT_PTM_NOTE_SLIDE_UP_RETRIG; break;
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case PTM_NOTE_SLIDE_DOWN_RETRIG: effect = IT_PTM_NOTE_SLIDE_DOWN_RETRIG; break;
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case PTM_SET_TEMPO_BPM:
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effect = (value < 0x20) ? (IT_SET_SPEED) : (IT_SET_SONG_TEMPO);
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break;
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case PTM_EBASE+PTM_E_SET_FINETUNE: effect = SBASE+IT_S_FINETUNE; break; /** TODO */
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case PTM_EBASE+PTM_E_SET_LOOP: effect = SBASE+IT_S_PATTERN_LOOP; break;
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case PTM_EBASE+PTM_E_NOTE_CUT: effect = SBASE+IT_S_DELAYED_NOTE_CUT; break;
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case PTM_EBASE+PTM_E_NOTE_DELAY: effect = SBASE+IT_S_NOTE_DELAY; break;
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case PTM_EBASE+PTM_E_PATTERN_DELAY: effect = SBASE+IT_S_PATTERN_DELAY; break;
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case PTM_EBASE+PTM_E_SET_PANNING: effect = SBASE+IT_S_SET_PAN; break;
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case PTM_EBASE+PTM_E_FINE_VOLSLIDE_UP:
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effect = IT_VOLUME_SLIDE;
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value = EFFECT_VALUE(value, 0xF);
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break;
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case PTM_EBASE + PTM_E_FINE_VOLSLIDE_DOWN:
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effect = IT_VOLUME_SLIDE;
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value = EFFECT_VALUE(0xF, value);
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break;
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case PTM_EBASE + PTM_E_FINE_PORTA_UP:
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effect = IT_PORTAMENTO_UP;
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value = EFFECT_VALUE(0xF, value);
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break;
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case PTM_EBASE + PTM_E_FINE_PORTA_DOWN:
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effect = IT_PORTAMENTO_DOWN;
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value = EFFECT_VALUE(0xF, value);
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break;
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case PTM_EBASE + PTM_E_RETRIG_NOTE:
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effect = IT_XM_RETRIGGER_NOTE;
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value = EFFECT_VALUE(0, value);
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break;
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case PTM_EBASE + PTM_E_SET_VIBRATO_CONTROL:
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effect = SBASE+IT_S_SET_VIBRATO_WAVEFORM;
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value &= ~4; /** TODO: value&4 -> don't retrig wave */
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break;
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case PTM_EBASE + PTM_E_SET_TREMOLO_CONTROL:
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effect = SBASE+IT_S_SET_TREMOLO_WAVEFORM;
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value &= ~4; /** TODO: value&4 -> don't retrig wave */
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break;
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default:
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/* user effect (often used in demos for synchronisation) */
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entry->mask &= ~IT_ENTRY_EFFECT;
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}
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/* Inverse linearisation... */
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if (effect >= SBASE && effect < SBASE+16) {
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value = EFFECT_VALUE(effect-SBASE, value);
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effect = IT_S;
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}
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entry->effect = effect;
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entry->effectvalue = value;
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}
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