mirror of
https://github.com/retro100/dosbox-wii.git
synced 2024-06-28 15:16:11 +02:00
236 lines
6.6 KiB
C++
236 lines
6.6 KiB
C++
/*
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* Copyright (C) 2002-2019 The DOSBox Team
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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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include <string>
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#include <algorithm>
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#include "SDL.h"
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#include "dosbox.h"
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#include "midi.h"
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#include "cross.h"
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#include "support.h"
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#include "setup.h"
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#include "mapper.h"
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#include "pic.h"
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#include "hardware.h"
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#include "timer.h"
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#define RAWBUF 1024
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Bit8u MIDI_evt_len[256] = {
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x00
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x10
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x20
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x30
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x40
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x50
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x60
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0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0, // 0x70
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3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0x80
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3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0x90
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3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xa0
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3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xb0
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2,2,2,2, 2,2,2,2, 2,2,2,2, 2,2,2,2, // 0xc0
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2,2,2,2, 2,2,2,2, 2,2,2,2, 2,2,2,2, // 0xd0
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3,3,3,3, 3,3,3,3, 3,3,3,3, 3,3,3,3, // 0xe0
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0,2,3,2, 0,0,1,0, 1,0,1,1, 1,0,1,0 // 0xf0
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};
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MidiHandler * handler_list = 0;
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MidiHandler::MidiHandler(){
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next = handler_list;
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handler_list = this;
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};
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MidiHandler Midi_none;
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/* Include different midi drivers, lowest ones get checked first for default.
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Each header provides an independent midi interface. */
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#if defined(MACOSX)
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#if defined(C_SUPPORTS_COREMIDI)
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#include "midi_coremidi.h"
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#endif
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#if defined(C_SUPPORTS_COREAUDIO)
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#include "midi_coreaudio.h"
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#endif
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#elif defined (WIN32)
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#include "midi_win32.h"
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#else
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#include "midi_oss.h"
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#endif
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#if defined (HAVE_ALSA)
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#include "midi_alsa.h"
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#endif
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DB_Midi midi;
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void MIDI_RawOutByte(Bit8u data) {
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if (midi.sysex.start) {
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Bit32u passed_ticks = GetTicks() - midi.sysex.start;
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if (passed_ticks < midi.sysex.delay) SDL_Delay(midi.sysex.delay - passed_ticks);
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}
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/* Test for a realtime MIDI message */
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if (data>=0xf8) {
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midi.rt_buf[0]=data;
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midi.handler->PlayMsg(midi.rt_buf);
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return;
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}
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/* Test for a active sysex tranfer */
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if (midi.status==0xf0) {
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if (!(data&0x80)) {
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if (midi.sysex.used<(SYSEX_SIZE-1)) midi.sysex.buf[midi.sysex.used++] = data;
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return;
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} else {
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midi.sysex.buf[midi.sysex.used++] = 0xf7;
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if ((midi.sysex.start) && (midi.sysex.used >= 4) && (midi.sysex.used <= 9) && (midi.sysex.buf[1] == 0x41) && (midi.sysex.buf[3] == 0x16)) {
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LOG(LOG_ALL,LOG_ERROR)("MIDI:Skipping invalid MT-32 SysEx midi message (too short to contain a checksum)");
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} else {
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// LOG(LOG_ALL,LOG_NORMAL)("Play sysex; address:%02X %02X %02X, length:%4d, delay:%3d", midi.sysex.buf[5], midi.sysex.buf[6], midi.sysex.buf[7], midi.sysex.used, midi.sysex.delay);
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midi.handler->PlaySysex(midi.sysex.buf, midi.sysex.used);
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if (midi.sysex.start) {
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if (midi.sysex.buf[5] == 0x7F) {
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midi.sysex.delay = 290; // All Parameters reset
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} else if (midi.sysex.buf[5] == 0x10 && midi.sysex.buf[6] == 0x00 && midi.sysex.buf[7] == 0x04) {
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midi.sysex.delay = 145; // Viking Child
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} else if (midi.sysex.buf[5] == 0x10 && midi.sysex.buf[6] == 0x00 && midi.sysex.buf[7] == 0x01) {
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midi.sysex.delay = 30; // Dark Sun 1
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} else midi.sysex.delay = (Bitu)(((float)(midi.sysex.used) * 1.25f) * 1000.0f / 3125.0f) + 2;
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midi.sysex.start = GetTicks();
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}
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}
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LOG(LOG_ALL,LOG_NORMAL)("Sysex message size %d", static_cast<int>(midi.sysex.used));
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if (CaptureState & CAPTURE_MIDI) {
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CAPTURE_AddMidi( true, midi.sysex.used-1, &midi.sysex.buf[1]);
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}
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}
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}
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if (data&0x80) {
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midi.status=data;
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midi.cmd_pos=0;
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midi.cmd_len=MIDI_evt_len[data];
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if (midi.status==0xf0) {
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midi.sysex.buf[0]=0xf0;
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midi.sysex.used=1;
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}
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}
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if (midi.cmd_len) {
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midi.cmd_buf[midi.cmd_pos++]=data;
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if (midi.cmd_pos >= midi.cmd_len) {
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if (CaptureState & CAPTURE_MIDI) {
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CAPTURE_AddMidi(false, midi.cmd_len, midi.cmd_buf);
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}
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midi.handler->PlayMsg(midi.cmd_buf);
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midi.cmd_pos=1; //Use Running status
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}
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}
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}
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bool MIDI_Available(void) {
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return midi.available;
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}
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class MIDI:public Module_base{
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public:
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MIDI(Section* configuration):Module_base(configuration){
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Section_prop * section=static_cast<Section_prop *>(configuration);
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const char * dev=section->Get_string("mididevice");
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std::string fullconf=section->Get_string("midiconfig");
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/* If device = "default" go for first handler that works */
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MidiHandler * handler;
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// MAPPER_AddHandler(MIDI_SaveRawEvent,MK_f8,MMOD1|MMOD2,"caprawmidi","Cap MIDI");
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midi.sysex.delay = 0;
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midi.sysex.start = 0;
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if (fullconf.find("delaysysex") != std::string::npos) {
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midi.sysex.start = GetTicks();
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fullconf.erase(fullconf.find("delaysysex"));
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LOG_MSG("MIDI: Using delayed SysEx processing");
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}
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trim(fullconf);
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const char * conf = fullconf.c_str();
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midi.status=0x00;
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midi.cmd_pos=0;
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midi.cmd_len=0;
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if (!strcasecmp(dev,"default")) goto getdefault;
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handler=handler_list;
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while (handler) {
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if (!strcasecmp(dev,handler->GetName())) {
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if (!handler->Open(conf)) {
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LOG_MSG("MIDI: Can't open device:%s with config:%s.",dev,conf);
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goto getdefault;
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}
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midi.handler=handler;
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midi.available=true;
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LOG_MSG("MIDI: Opened device:%s",handler->GetName());
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return;
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}
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handler=handler->next;
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}
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LOG_MSG("MIDI: Can't find device:%s, finding default handler.",dev);
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getdefault:
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handler=handler_list;
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while (handler) {
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if (handler->Open(conf)) {
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midi.available=true;
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midi.handler=handler;
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LOG_MSG("MIDI: Opened device:%s",handler->GetName());
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return;
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}
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handler=handler->next;
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}
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/* This shouldn't be possible */
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}
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~MIDI(){
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if(midi.available) midi.handler->Close();
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midi.available = false;
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midi.handler = 0;
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}
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};
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static MIDI* test;
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void MIDI_Destroy(Section* /*sec*/){
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delete test;
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}
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void MIDI_Init(Section * sec) {
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test = new MIDI(sec);
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sec->AddDestroyFunction(&MIDI_Destroy,true);
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}
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