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/* SPDX-License-Identifier: MIT */
/*
* konsound.h
*
* Copyright (c) 2026 KonAki
*
* 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.
*/
#ifndef KONSOUND_H
#define KONSOUND_H
#include <stddef.h>
#include <stdint.h>
#include "konaudio.h"
#ifdef __cplusplus
extern "C" {
#endif
/*** definition ***/
#define KON_SOUND_NAME 64
#define KON_SOUND_SE_TRACKED 16
#define KON_SOUND_BGM 0
#define KON_SOUND_BGS 1
#define KON_SOUND_ME 2
#define KON_SOUND_SE 3
/* finds the sound for a name. loopStart and loopEnd are frames, leave them 0 for no loop points.
the sound has to stay alive while it plays. return NULL for a name you do not have */
typedef const kon_sound_t *(*kon_soundLookup_t)(int kind, const char *name, uint64_t *loopStart, uint64_t *loopEnd, void *user);
typedef struct kon_soundChannel {
kon_audioHandle_t handle;
char name[KON_SOUND_NAME];
int volume, pitch, pan;
} kon_soundChannel_t;
/* volumes, pitches and pans are the RPG Maker numbers: volume 0 to 100, pitch 50 to 150 (100 is normal), pan -100 to 100 */
typedef struct kon_soundDeck {
kon_audio_t *audio;
kon_soundLookup_t lookup;
void *user;
kon_soundChannel_t bgm, bgs, me;
kon_soundChannel_t savedBgm;
kon_soundChannel_t resumeBgm; /* the music that was playing when a ME started */
int meHeld;
kon_audioHandle_t se[KON_SOUND_SE_TRACKED];
int seNext;
} kon_soundDeck_t;
/*** deck ***/
void kon_soundDeckInit(kon_soundDeck_t *deck, kon_audio_t *audio, kon_soundLookup_t lookup, void *user);
/* stops everything this deck started */
void kon_soundDeckStop(kon_soundDeck_t *deck);
/* call once per frame. brings the music back when a ME is over */
void kon_soundUpdate(kon_soundDeck_t *deck);
/*** channels ***/
/* a new name replaces the music, the same name only changes volume, pitch and pan. an empty name stops it */
void kon_soundPlayBgm(kon_soundDeck_t *deck, const char *name, int volume, int pitch, int pan);
void kon_soundPlayBgs(kon_soundDeck_t *deck, const char *name, int volume, int pitch, int pan);
void kon_soundFadeBgm(kon_soundDeck_t *deck, int seconds);
void kon_soundFadeBgs(kon_soundDeck_t *deck, int seconds);
/* remembers the music, and starts it again from the beginning (the position is not kept) */
void kon_soundSaveBgm(kon_soundDeck_t *deck);
void kon_soundReplayBgm(kon_soundDeck_t *deck);
/* plays once. the music pauses until it is over */
void kon_soundPlayMe(kon_soundDeck_t *deck, const char *name, int volume, int pitch, int pan);
void kon_soundPlaySe(kon_soundDeck_t *deck, const char *name, int volume, int pitch, int pan);
void kon_soundStopSe(kon_soundDeck_t *deck);
/*** konscript host commands ***/
/* handles the RPG Maker audio commands 241 to 246, 249, 250 and 251 the way mzscript writes them.
returns 1 when the code was one of those, 0 when it is not yours to handle */
int kon_soundHost(kon_soundDeck_t *deck, int code, int b, int c, int d, const char *text);
/*** ogg loop points ***/
/* looks for LOOPSTART and LOOPLENGTH tags in the start of an ogg file, the way RPG Maker games write them.
returns 1 and sets start and end (frames) when there is a loop start, else 0 */
int kon_soundOggLoop(const uint8_t *data, size_t size, uint64_t *start, uint64_t *end);
#ifdef __cplusplus
}
#endif
#endif
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