Emscripten PCM backend

src/music_pcm.h

@@ -24,8 +24,6 @@
 #ifndef __MUSIC_PCM_H__
 #define __MUSIC_PCM_H__
 
-#include <SDL_mixer.h>
-
 extern int muspcm_init();
 extern int muspcm_exit();
 extern int muspcm_load_no(int slot, int no);

src/pcm.emscripten.c

@@ -0,0 +1,155 @@
+/*
+ * pcm.emscripten.c  Emscripten PCM backend
+ *
+ * Copyright (C) 2017 <KichikuouChrome@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+*/
+
+#include <emscripten.h>
+
+#include "portab.h"
+#include "system.h"
+#include "ald_manager.h"
+#include "dri.h"
+#include "music_pcm.h"
+#include "music_private.h"
+#include "nact.h"
+
+
+int muspcm_init() {
+	prv.pcm_valid = TRUE;
+	return OK;
+}
+
+int muspcm_exit() {
+	return OK;
+}
+
+// 番号指定のPCMファイル読み込み
+int muspcm_load_no(int slot, int no) {
+	dridata *dfile = ald_getdata(DRIFILE_WAVE, no -1);
+	if (dfile == NULL) {
+		WARNING("DRIFILE_WAVE fail to open %d\n", no -1);
+		return NG;
+	}
+
+	EM_ASM_({
+		xsystem35.waitPromise(function(){
+			return xsystem35.audio.pcm_load($0, $1, $2);
+		});
+	}, slot, dfile->data, dfile->size);
+#ifdef EMTERPRETIFY_ADVISE
+	emscripten_sleep(0);
+#endif
+
+	ald_freedata(dfile);
+	return OK;
+}
+
+int muspcm_load_mixlr(int slot, int noL, int noR) {
+	dridata *dfileL = ald_getdata(DRIFILE_WAVE, noL -1);
+	if (dfileL == NULL) {
+		WARNING("DRIFILE_WAVE fail to open %d\n", noL -1);
+		return NG;
+	}
+	dridata *dfileR = ald_getdata(DRIFILE_WAVE, noR -1);
+	if (dfileR == NULL) {
+		ald_freedata(dfileL);
+		WARNING("DRIFILE_WAVE fail to open %d\n", noR -1);
+		return NG;
+	}
+
+	EM_ASM_({
+		xsystem35.waitPromise(function() {
+			return xsystem35.audio.pcm_load_mixlr($0, $1, $2, $3, $4);
+		});
+	}, slot, dfileL->data, dfileL->size, dfileR->data, dfileR->size);
+#ifdef EMTERPRETIFY_ADVISE
+	emscripten_sleep(0);
+#endif
+
+	ald_freedata(dfileL);
+	ald_freedata(dfileR);
+	return OK;
+}
+
+// PCMデータを再生
+int muspcm_start(int slot, int loop) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_start($0, $1);
+	}, slot, loop) ? OK : NG;
+}
+
+// PCMデータの再生停止
+int muspcm_stop(int slot) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_stop($0);
+	}, slot) ? OK : NG;
+}
+
+// 指定時間のフェードアウトの後に再生停止
+int muspcm_fadeout(int slot, int msec) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_fadeout($0, $1);
+	}, slot, msec) ? OK : NG;
+}
+
+// PCMデータ再生一時停止
+int muspcm_pause(int slot) {
+	printf("%s not implemented\n", __func__);
+	return NG;
+}
+
+// PCMデータ再生一時停止解除
+int muspcm_unpause(int slot) {
+	printf("%s not implemented\n", __func__);
+	return NG;
+}
+
+// 現在の再生位置を返す
+int muspcm_getpos(int slot) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_getpos($0);
+	}, slot) ? OK : NG;
+}
+
+// PCMオブジェクトに対してボリュームをセット
+int muspcm_setvol(int dev, int slot, int lv) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_setvol($0, $1);
+	}, slot, lv) ? OK : NG;
+}
+
+// PCMデータの長さを取得
+int muspcm_getwavelen(int slot) {
+	int len = EM_ASM_INT({
+		return xsystem35.audio.pcm_getwavelen($0);
+	}, slot);
+
+	return len > 65535 ? 65535 : len;
+}
+
+// 指定のスロットが現在演奏中かどうかを取得
+boolean muspcm_isplaying(int slot) {
+	return EM_ASM_INT({
+		return xsystem35.audio.pcm_isplaying($0);
+	}, slot) ? TRUE : FALSE;
+}
+
+int musfade_setvolval_all(int val) {
+	EM_ASM_(xsystem35.audio.setVolume($0), val);
+}