mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
synced 2026-10-06 13:47:59 +03:00
BGM (*BA.ALD) support
This commit is contained in:
kichikuou
+3
-3
@@ -112,14 +112,14 @@ endif()
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if (EMSCRIPTEN)
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list(APPEND SRC_AUDIO)
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list(APPEND SRC_AUDIO pcm.emscripten.c)
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list(APPEND SRC_AUDIO pcm.emscripten.c bgm.dummy.c)
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list(APPEND SUMMARY_AUDIO "Emscripten")
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elseif (SDL2MIXER_FOUND)
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list(APPEND SRC_AUDIO pcm.sdlmixer.c)
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list(APPEND SRC_AUDIO pcm.sdlmixer.c bgm.sdlmixer.c)
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list(APPEND SUMMARY_AUDIO "SDL_mixer")
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set(ENABLE_SDLMIXER 1)
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else()
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list(APPEND SRC_AUDIO pcm.dummy.c)
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list(APPEND SRC_AUDIO pcm.dummy.c bgm.dummy.c)
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endif()
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# CDROM
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@@ -0,0 +1,71 @@
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/*
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* bgm.dummy.c BGM (*BA.ALD) dummy implementation
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*
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* Copyright (C) 2019 <KichikuouChrome@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <stdio.h>
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#include "portab.h"
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#include "bgm.h"
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int musbgm_init() {
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return NG;
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}
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int musbgm_exit() {
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return NG;
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}
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int musbgm_play(int no, int time, int vol) {
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printf("%s not implemented\n", __func__);
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return NG;
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}
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int musbgm_stop(int no, int time) {
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printf("%s not implemented\n", __func__);
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return NG;
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}
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int musbgm_fade(int no, int time, int vol) {
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printf("%s not implemented\n", __func__);
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return NG;
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}
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int musbgm_getpos(int no) {
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printf("%s not implemented\n", __func__);
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return 0;
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}
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int musbgm_getlen(int no) {
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printf("%s not implemented\n", __func__);
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return 0;
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}
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int musbgm_isplaying(int no) {
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printf("%s not implemented\n", __func__);
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return 0;
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}
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int musbgm_stopall(int time) {
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printf("%s not implemented\n", __func__);
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return NG;
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}
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int musbgm_wait(int no, int timeout) {
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printf("%s not implemented\n", __func__);
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return NG;
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}
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@@ -0,0 +1,15 @@
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#ifndef __BGM_H__
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#define __BGM_H__
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extern int musbgm_init();
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extern int musbgm_exit();
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extern int musbgm_play(int no, int time, int vol);
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extern int musbgm_stop(int no, int time);
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extern int musbgm_fade(int no, int time, int vol);
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extern int musbgm_getpos(int no);
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extern int musbgm_getlen(int no);
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extern int musbgm_isplaying(int no);
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extern int musbgm_stopall(int time);
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extern int musbgm_wait(int no, int timeout);
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#endif /* __BGM_H__ */
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@@ -0,0 +1,216 @@
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/*
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* bgm.sdlmixer.c: BGM (*BA.ALD) playback
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*
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* Copyright (C) 1997-1998 Masaki Chikama (Wren) <chikama@kasumi.ipl.mech.nagoya-u.ac.jp>
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* 1998- <masaki-c@is.aist-nara.ac.jp>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdint.h>
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#include <SDL.h>
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#include <SDL_mixer.h>
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#include "portab.h"
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#include "system.h"
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#include "nact.h"
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#include "bgm.h"
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#include "music_private.h"
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#include "ald_manager.h"
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#define BGI_MAX 100
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typedef struct {
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int no; // シナリオ上での曲番号
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int loopno; // ループ回数 (０の場合は無限)
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int looptop; // ループ時先頭戻り位置 (サンプル数)
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int len; // 曲長さ (サンプル数)
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} bgi_t;
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static int bgi_nfile;
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static bgi_t bgi_data[BGI_MAX];
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static int current_no;
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static Mix_Music *mix_music;
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static void* wave_buf;
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static Uint32 start_time;
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static char *bgi_gets(char *buf, int n, FILE *fp) {
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char *s = buf;
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int c;
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while (--n > 0 && (c = fgetc(fp)) != EOF) {
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c = c >> 4 | (c & 0xf) << 4; // decrypt
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*s++ = c;
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if (c == '\n')
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break;
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}
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if (s == buf && c == EOF)
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return NULL;
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*s = '\0';
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return buf;
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}
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static void bgi_read() {
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if (nact->files.bgi == NULL)
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return;
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FILE *fp = fopen(nact->files.bgi, "r");
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if (!fp) {
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WARNING("Could not open %s\n", nact->files.bgi);
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return;
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}
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char buf[100];
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while (bgi_nfile < BGI_MAX && bgi_gets(buf, sizeof(buf), fp)) {
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int terminator;
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if (sscanf(buf, " %d, %d, %d, %d, %d",
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&bgi_data[bgi_nfile].no,
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&bgi_data[bgi_nfile].loopno,
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&bgi_data[bgi_nfile].looptop,
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&bgi_data[bgi_nfile].len,
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&terminator) != 5
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|| terminator != -1) {
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continue;
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}
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bgi_nfile++;
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}
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return;
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}
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static bgi_t *bgi_find(int no) {
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for (int i = 0; i < bgi_nfile; i++) {
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if (bgi_data[i].no == no)
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return &bgi_data[i];
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}
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return NULL;
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}
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static void free_music() {
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current_no = 0;
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if (mix_music) {
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Mix_FreeMusic(mix_music);
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mix_music = NULL;
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}
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if (wave_buf) {
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free(wave_buf);
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wave_buf = NULL;
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}
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}
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static Mix_Music *bgm_load(int no) {
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dridata *dfile = ald_getdata(DRIFILE_BGM, no -1);
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if (dfile == NULL) {
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WARNING("DRIFILE_BGM fail to open %d\n", no -1);
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return NULL;
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}
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free_music();
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wave_buf = malloc(dfile->size);
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memcpy(wave_buf, dfile->data, dfile->size);
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SDL_RWops *rwops = SDL_RWFromConstMem(wave_buf, dfile->size);
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ald_freedata(dfile);
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mix_music = Mix_LoadMUSType_RW(rwops, MUS_WAV, SDL_TRUE /* freesrc */);
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if (mix_music == NULL) {
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WARNING("not .wav file\n");
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free_music();
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return NULL;
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}
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current_no = no;
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return mix_music;
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}
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int musbgm_init() {
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bgi_read();
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if (!bgi_nfile) return NG;
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return OK;
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}
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int musbgm_exit() {
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free_music();
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return OK;
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}
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int musbgm_play(int no, int time, int vol) {
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if (current_no)
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musbgm_stop(current_no, 0);
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if (!bgm_load(no))
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return NG;
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// We don't use the loop information in the BGI file, but SDL_mixer
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// understands loop info in the WAVE's "smpl" chunk.
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Mix_VolumeMusic(vol * MIX_MAX_VOLUME / 100);
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if (Mix_FadeInMusic(mix_music, -1, time * 10) != 0) {
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free_music();
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return NG;
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}
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start_time = SDL_GetTicks();
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return OK;
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}
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int musbgm_stop(int no, int time) {
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if (no == current_no)
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Mix_FadeOutMusic(time * 10);
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return OK;
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}
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int musbgm_fade(int no, int time, int vol) {
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if (no != current_no)
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return NG;
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// SDL_mixer doesn't provide arbitrary fading, so just set the volume immediately.
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Mix_VolumeMusic(vol * MIX_MAX_VOLUME / 100);
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return OK;
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}
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int musbgm_getpos(int no) {
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if (!musbgm_isplaying(no))
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return 0;
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// FIXME: This is not correct after loop
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return (SDL_GetTicks() - start_time) / 10;
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}
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int musbgm_getlen(int no) {
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bgi_t *bgi = bgi_find(no);
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if (!bgi) return 0;
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// FIXME: This assumes 44.1kHz
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return bgi->len / 441;
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}
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int musbgm_isplaying(int no) {
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return no == current_no && Mix_PlayingMusic();
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}
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int musbgm_stopall(int time) {
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return musbgm_stop(current_no, time);
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}
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int musbgm_wait(int no, int timeout) {
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while (timeout-- > 0 && musbgm_isplaying(no))
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SDL_Delay(10);
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return OK;
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}
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+9
-14
@@ -29,6 +29,7 @@
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struct _musprvdat musprv;
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int mus_init(int audio_buffer_size) {
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musbgm_init();
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muscd_init();
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musmidi_init();
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prv.pcm_valid = muspcm_init(audio_buffer_size) == OK;
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@@ -36,6 +37,7 @@ int mus_init(int audio_buffer_size) {
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}
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int mus_exit() {
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musbgm_exit();
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if (prv.cd_valid) muscd_exit();
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if (prv.midi_valid) musmidi_exit();
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if (prv.pcm_valid) muspcm_exit();
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@@ -437,38 +439,31 @@ int mus_wav_load_lrsw(int ch, int num) {
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}
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int mus_bgm_play(int no, int time, int vol) {
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printf("%s not implemented\n", __func__);
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return NG;
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return musbgm_play(no, time, vol);
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}
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int mus_bgm_stop(int no, int time) {
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printf("%s not implemented\n", __func__);
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return NG;
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return musbgm_stop(no, time);
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}
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int mus_bgm_stopall(int time) {
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printf("%s not implemented\n", __func__);
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return NG;
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return musbgm_stopall(time);
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}
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int mus_bgm_fade(int no, int time, int vol) {
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printf("%s not implemented\n", __func__);
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return NG;
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return musbgm_fade(no, time, vol);
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}
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int mus_bgm_getpos(int no) {
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printf("%s not implemented\n", __func__);
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return 0;
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return musbgm_getpos(no);
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}
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int mus_bgm_getlength(int no) {
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printf("%s not implemented\n", __func__);
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return 0;
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return musbgm_getlen(no);
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}
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int mus_bgm_wait(int no, int timeout) {
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printf("%s not implemented\n", __func__);
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return NG;
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return musbgm_wait(no, timeout);
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}
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int mus_bgm_waitpos(int no, int index) {
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@@ -23,6 +23,7 @@
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#define __MUSIC_PRIVATE_H__
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#include "portab.h"
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#include "bgm.h"
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#include "cdrom.h"
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#include "midi.h"
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#include "music_cdrom.h"
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