mirror of
https://github.com/kichikuou/xsystem35-sdl2.git
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99 lines
2.3 KiB
C
99 lines
2.3 KiB
C
/*
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* midi.emscripten.c midi play for emscripten
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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 <emscripten.h>
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#include "portab.h"
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#include "midi.h"
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static bool midi_initialize(int subdev) {
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return true;
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}
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EM_JS(void, midi_stop, (void), {
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xsystem35.midiPlayer.stop();
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});
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static void midi_exit(void) {
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midi_stop();
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}
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static void midi_reset(void) {
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midi_stop();
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}
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static bool midi_start(int no, int loop, const uint8_t *data, int datalen) {
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EM_ASM_ARGS({ xsystem35.midiPlayer.play($0, $1, $2); }, loop, data, datalen);
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return true;
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}
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EM_JS(void, midi_pause, (void), {
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xsystem35.midiPlayer.pause();
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});
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EM_JS(void, midi_unpause, (void), {
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xsystem35.midiPlayer.resume();
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});
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static bool midi_get_playing_info(midiplaystate *st) {
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int pos = EM_ASM_INT_V( return xsystem35.midiPlayer.getPosition(); );
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if (pos >= 0) {
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st->in_play = true;
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st->loc_ms = pos;
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return true;
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}
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st->in_play = false;
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st->loc_ms = 0;
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return true;
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}
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static int midi_getflag(int mode, int index) {
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return 0;
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}
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static bool midi_setflag(int mode, int index, int val) {
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return false;
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}
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EM_JS(bool, midi_fadestart, (int time, int volume, int stop), {
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xsystem35.midiPlayer.fadeStart(time, volume, stop);
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return 1;
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});
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EM_JS(bool, midi_fading, (void), {
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return xsystem35.midiPlayer.isFading();
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});
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mididevice_t midi_emscripten = {
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.init = midi_initialize,
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.exit = midi_exit,
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.reset = midi_reset,
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.start = midi_start,
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.stop = midi_stop,
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.pause = midi_pause,
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.unpause = midi_unpause,
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.getpos = midi_get_playing_info,
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.getflag = midi_getflag,
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.setflag = midi_setflag,
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.fadestart = midi_fadestart,
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.fading = midi_fading,
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};
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