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Midi support for win32 and linux oss

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@698
This commit is contained in:
Sjoerd van der Berg 2003-03-02 20:21:41 +00:00
parent fb460d28a5
commit 732856e2f6
4 changed files with 251 additions and 1 deletions
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src/gui/midi.cpp Normal file
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/*
* Copyright (C) 2002-2003 The DOSBox Team
*
* 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 Library 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 "dosbox.h"
#include "setup.h"
Bit8u MIDI_evt_len[256] = {
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x00
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x10
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x20
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x30
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x40
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x50
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x60
0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x70
3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0x80
3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0x90
3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xa0
3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xb0
2,2,2,2, 2,2,2,2, 2,2,2,2, 2,2,2,2, // 0xc0
2,2,2,2, 2,2,2,2, 2,2,2,2, 2,2,2,2, // 0xd0
3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xe0
0,2,3,2, 0,0,1,1, 1,0,1,1, 1,0,1,1 // 0xf0
};
#if defined (WIN32)
#include "midi_win32.h"
#elif defined (UNIX) && !defined(__BEOS__)
#include "midi_oss.h"
#else /* Fall back to no device playing */
static void MIDI_PlayMsg(Bit32u msg) {}
static void MIDI_PlaySysex(Bit8u * sysex,Bitu len) {};
static bool MIDI_StartUp(void) { return false;}
#endif
static struct {
Bitu status;
Bitu cmd_len;
Bitu cmd_pos;
Bit32u cmd_msg;
Bit8u data[4];
struct {
Bit8u buf[256];
Bitu used;
bool active;
} sysex;
bool available;
} midi;
void MIDI_RawOutByte(Bit8u data) {
/* Test for a new status byte */
if (midi.sysex.active && !(data&0x80)) {
if (midi.sysex.used<256) midi.sysex.buf[midi.sysex.used++]=data;
return;
} else if (data&0x80) {
if (midi.sysex.active) {
/* Play a sysex message */
midi.sysex.buf[midi.sysex.used++]=0xf7;
MIDI_PlaySysex(midi.sysex.buf,midi.sysex.used);
LOG(0,"Sysex message size %d",midi.sysex.used);
midi.sysex.active=false;
if (data==0xf7) return;
}
midi.status=data;
midi.cmd_pos=0;
midi.cmd_msg=0;
if (midi.status==0xf0) {
midi.sysex.active=true;
midi.sysex.buf[0]=0xf0;
midi.sysex.used=1;
return;
}
midi.cmd_len=MIDI_evt_len[data];
}
midi.cmd_msg|=data << (8 * midi.cmd_pos);
midi.cmd_pos++;
if (midi.cmd_pos >= midi.cmd_len) {
MIDI_PlayMsg(midi.cmd_msg);
midi.cmd_msg=midi.status;
midi.cmd_pos=1;
}
}
bool MIDI_Available(void) {
return midi.available;
}
void MIDI_Init(Section * sect) {
midi.available=MIDI_StartUp();
}