mirror of
https://github.com/libretro/scummvm.git
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658 lines
15 KiB
C++
658 lines
15 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001/2002 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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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* $Header$
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*/
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/*
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* Raw output support by Michael Pearce
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* MorphOS support by Ruediger Hanke
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* Alsa support by Nicolas Noble <nicolas@nobis-crew.org> copied from
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* both the QuickTime support and (vkeybd http://www.alsa-project.org/~iwai/alsa.html)
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*/
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#include "stdafx.h"
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#include "mididrv.h"
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#include "mpu401.h"
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#include "common/engine.h" // for warning/error/debug
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#include "common/util.h" // for ARRAYSIZE
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/* Default (empty) property method */
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uint32 MidiDriver::property(int prop, uint32 param)
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{
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return 0;
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}
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/* retrieve a string representation of an error code */
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const char *MidiDriver::get_error_name(int error_code)
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{
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static const char *const midi_errors[] = {
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"No error",
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"Cannot connect",
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"Streaming not available",
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"Device not available",
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"Driver already open"
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};
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if ((uint) error_code >= ARRAYSIZE(midi_errors))
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return "Unknown Error";
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return midi_errors[error_code];
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}
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#if defined(WIN32) && !defined(_WIN32_WCE)
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/* Windows MIDI driver */
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class MidiDriver_WIN : public MidiDriver_MPU401 {
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public:
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int open(int mode);
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void close();
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void send(uint32 b);
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void pause(bool p);
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void set_stream_callback(void *param, StreamCallback *sc);
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// void setPitchBendRange (byte channel, uint range);
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private:
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struct MyMidiHdr {
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MIDIHDR hdr;
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};
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enum {
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NUM_PREPARED_HEADERS = 2,
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MIDI_EVENT_SIZE = 64,
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BUFFER_SIZE = MIDI_EVENT_SIZE * 12,
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};
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StreamCallback *_stream_proc;
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void *_stream_param;
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int _mode;
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HMIDIOUT _mo;
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HMIDISTRM _ms;
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MyMidiHdr *_prepared_headers;
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uint16 _time_div;
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void unprepare();
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void prepare();
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void check_error(MMRESULT result);
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void fill_all();
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uint32 property(int prop, uint32 param);
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static void CALLBACK midi_callback(HMIDIOUT hmo, UINT wMsg,
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DWORD dwInstance, DWORD dwParam1, DWORD dwParam2);
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};
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void MidiDriver_WIN::set_stream_callback(void *param, StreamCallback *sc)
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{
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_stream_param = param;
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_stream_proc = sc;
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}
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void CALLBACK MidiDriver_WIN::midi_callback(HMIDIOUT hmo, UINT wMsg,
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DWORD dwInstance, DWORD dwParam1, DWORD dwParam2)
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{
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switch (wMsg) {
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case MM_MOM_DONE:{
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MidiDriver_WIN *md = ((MidiDriver_WIN *) dwInstance);
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if (md->_mode)
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md->fill_all();
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break;
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}
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}
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}
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int MidiDriver_WIN::open(int mode)
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{
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if (_mode != 0)
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return MERR_ALREADY_OPEN;
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_mode = mode;
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if (mode == MO_SIMPLE) {
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MMRESULT res = midiOutOpen((HMIDIOUT *) & _mo, MIDI_MAPPER, 0, 0, 0);
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if (res != MMSYSERR_NOERROR)
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check_error(res);
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} else {
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/* streaming mode */
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MIDIPROPTIMEDIV mptd;
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UINT _midi_device_id = 0;
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check_error(midiStreamOpen(&_ms, &_midi_device_id, 1,
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(uint32)midi_callback, (uint32)this, CALLBACK_FUNCTION));
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prepare();
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mptd.cbStruct = sizeof(mptd);
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mptd.dwTimeDiv = _time_div;
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check_error(midiStreamProperty(_ms, (byte *)&mptd, MIDIPROP_SET | MIDIPROP_TIMEDIV));
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fill_all();
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}
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return 0;
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}
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void MidiDriver_WIN::fill_all()
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{
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if (_stream_proc == NULL) {
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error("MidiDriver_WIN::fill_all() called, but _stream_proc==NULL");
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}
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uint i;
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MyMidiHdr *mmh = _prepared_headers;
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MidiEvent my_evs[64];
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for (i = 0; i != NUM_PREPARED_HEADERS; i++, mmh++) {
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if (!(mmh->hdr.dwFlags & MHDR_INQUEUE)) {
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int num = _stream_proc(_stream_param, my_evs, 64);
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int i;
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/* end of stream? */
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if (num == 0)
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break;
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MIDIEVENT *ev = (MIDIEVENT *)mmh->hdr.lpData;
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MidiEvent *my_ev = my_evs;
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for (i = 0; i != num; i++, my_ev++) {
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ev->dwStreamID = 0;
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ev->dwDeltaTime = my_ev->delta;
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switch (my_ev->event >> 24) {
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case 0:
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ev->dwEvent = my_ev->event;
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break;
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case ME_TEMPO:
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/* change tempo event */
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ev->dwEvent = (ME_TEMPO << 24) | (my_ev->event & 0xFFFFFF);
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break;
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default:
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error("Invalid event type passed");
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}
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/* increase stream pointer by 12 bytes
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* (need to be 12 bytes, and sizeof(MIDIEVENT) is 16)
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*/
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ev = (MIDIEVENT *)((byte *)ev + 12);
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}
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mmh->hdr.dwBytesRecorded = num * 12;
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check_error(midiStreamOut(_ms, &mmh->hdr, sizeof(mmh->hdr)));
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}
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}
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}
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void MidiDriver_WIN::prepare()
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{
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int i;
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MyMidiHdr *mmh;
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_prepared_headers = (MyMidiHdr *) calloc(sizeof(MyMidiHdr), 2);
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for (i = 0, mmh = _prepared_headers; i != NUM_PREPARED_HEADERS; i++, mmh++) {
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mmh->hdr.dwBufferLength = BUFFER_SIZE;
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mmh->hdr.lpData = (LPSTR) calloc(BUFFER_SIZE, 1);
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check_error(midiOutPrepareHeader((HMIDIOUT) _ms, &mmh->hdr, sizeof(mmh->hdr)));
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}
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}
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void MidiDriver_WIN::unprepare()
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{
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uint i;
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MyMidiHdr *mmh = _prepared_headers;
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for (i = 0; i != NUM_PREPARED_HEADERS; i++, mmh++) {
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check_error(midiOutUnprepareHeader((HMIDIOUT) _ms, &mmh->hdr, sizeof(mmh->hdr)));
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free(mmh->hdr.lpData);
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mmh->hdr.lpData = NULL;
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}
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free(_prepared_headers);
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}
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void MidiDriver_WIN::close()
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{
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int mode_was = _mode;
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_mode = 0;
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switch (mode_was) {
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case MO_SIMPLE:
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check_error(midiOutClose(_mo));
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break;
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case MO_STREAMING:;
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check_error(midiStreamStop(_ms));
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check_error(midiOutReset((HMIDIOUT) _ms));
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unprepare();
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check_error(midiStreamClose(_ms));
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break;
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}
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}
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void MidiDriver_WIN::send(uint32 b)
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{
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union {
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DWORD dwData;
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BYTE bData[4];
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} u;
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if (_mode != MO_SIMPLE)
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error("MidiDriver_WIN:send called but driver is not in simple mode");
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u.bData[3] = (byte)((b & 0xFF000000) >> 24);
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u.bData[2] = (byte)((b & 0x00FF0000) >> 16);
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u.bData[1] = (byte)((b & 0x0000FF00) >> 8);
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u.bData[0] = (byte)(b & 0x000000FF);
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//printMidi(u.bData[0], u.bData[1], u.bData[2], u.bData[3]);
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check_error(midiOutShortMsg(_mo, u.dwData));
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}
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void MidiDriver_WIN::pause(bool p)
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{
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if (_mode == MO_STREAMING) {
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if (p)
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check_error(midiStreamPause(_ms));
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else
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check_error(midiStreamRestart(_ms));
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}
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}
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void MidiDriver_WIN::check_error(MMRESULT result)
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{
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char buf[200];
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if (result != MMSYSERR_NOERROR) {
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midiOutGetErrorText(result, buf, 200);
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warning("MM System Error '%s'", buf);
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}
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}
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uint32 MidiDriver_WIN::property(int prop, uint32 param)
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{
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switch (prop) {
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/* 16-bit time division according to standard midi specification */
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case PROP_TIMEDIV:
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_time_div = (uint16)param;
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return 1;
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}
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return 0;
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}
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MidiDriver *MidiDriver_WIN_create()
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{
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return new MidiDriver_WIN();
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}
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#endif // WIN32
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#ifdef __MORPHOS__
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#include <exec/memory.h>
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#include <exec/types.h>
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#include <devices/etude.h>
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#include <clib/alib_protos.h>
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#include <proto/exec.h>
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#include <proto/etude.h>
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#include "morphos_sound.h"
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/* MorphOS MIDI driver */
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class MidiDriver_ETUDE:public MidiDriver_MPU401 {
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public:
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int open(int mode);
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void close();
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void send(uint32 b);
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void pause(bool p);
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void set_stream_callback(void *param, StreamCallback *sc);
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// void setPitchBendRange (byte channel, uint range);
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private:
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enum {
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NUM_BUFFERS = 2,
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MIDI_EVENT_SIZE = 64,
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BUFFER_SIZE = MIDI_EVENT_SIZE * 12,
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};
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static void midi_callback(ULONG msg, struct IOMidiRequest *req, APTR user_data);
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void fill_all();
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uint32 property(int prop, uint32 param);
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StreamCallback *_stream_proc;
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void *_stream_param;
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IOMidiRequest *_stream_req[NUM_BUFFERS];
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void *_stream_buf[NUM_BUFFERS];
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bool _req_sent[NUM_BUFFERS];
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int _mode;
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uint16 _time_div;
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};
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void MidiDriver_ETUDE::set_stream_callback(void *param, StreamCallback *sc)
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{
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_stream_param = param;
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_stream_proc = sc;
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}
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int MidiDriver_ETUDE::open(int mode)
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{
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if (_mode != 0)
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return MERR_ALREADY_OPEN;
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_mode = mode;
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if (!init_morphos_music(0, _mode == MO_STREAMING ? ETUDEF_STREAMING : ETUDEF_DIRECT))
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return MERR_DEVICE_NOT_AVAILABLE;
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if (_mode == MO_STREAMING && ScummMidiRequest) {
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_stream_req[0] = ScummMidiRequest;
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_stream_req[1] = (IOMidiRequest *) AllocVec(sizeof (IOMidiRequest), MEMF_PUBLIC);
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_stream_buf[0] = AllocVec(BUFFER_SIZE, MEMF_PUBLIC);
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_stream_buf[1] = AllocVec(BUFFER_SIZE, MEMF_PUBLIC);
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_req_sent[0] = _req_sent[1] = false;
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if (_stream_req[1] == NULL || _stream_buf[0] == NULL || _stream_buf[1] == NULL) {
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close();
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return MERR_DEVICE_NOT_AVAILABLE;
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}
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if (ScummMidiRequest)
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{
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memcpy(_stream_req[1], _stream_req[0], sizeof (IOMidiRequest));
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struct TagItem MidiStreamTags[] = { { ESA_Callback, (ULONG) &midi_callback },
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{ ESA_UserData, (ULONG) this },
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{ ESA_TimeDiv, _time_div },
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{ TAG_DONE, 0 }
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};
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SetMidiStreamAttrsA(ScummMidiRequest, MidiStreamTags);
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fill_all();
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}
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}
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return 0;
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}
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void MidiDriver_ETUDE::close()
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{
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if (_mode == MO_STREAMING) {
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if (_req_sent[0]) {
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AbortIO((IORequest *) _stream_req[0]);
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WaitIO((IORequest *) _stream_req[0]);
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_req_sent[0] = false;
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}
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if (_req_sent[1]) {
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AbortIO((IORequest *) _stream_req[1]);
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WaitIO((IORequest *) _stream_req[1]);
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_req_sent[1] = false;
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}
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if (_stream_req[1]) FreeVec(_stream_req[1]);
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if (_stream_buf[0]) FreeVec(_stream_buf[0]);
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if (_stream_buf[1]) FreeVec(_stream_buf[1]);
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}
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exit_morphos_music();
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_mode = 0;
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}
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void MidiDriver_ETUDE::send(uint32 b)
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{
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if (_mode != MO_SIMPLE)
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error("MidiDriver_ETUDE::send called but driver is not in simple mode");
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if (ScummMidiRequest) {
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ULONG midi_data = READ_LE_UINT32(&b);
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SendShortMidiMsg(ScummMidiRequest, midi_data);
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}
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}
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void MidiDriver_ETUDE::midi_callback(ULONG msg, struct IOMidiRequest *req, APTR user_data)
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{
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switch (msg) {
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case ETUDE_STREAM_MSG_BLOCKEND: {
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MidiDriver_ETUDE *md = ((MidiDriver_ETUDE *) user_data);
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if (md && md->_mode)
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md->fill_all();
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break;
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}
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}
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}
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void MidiDriver_ETUDE::fill_all()
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{
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if (_stream_proc == NULL) {
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error("MidiDriver_ETUDE::fill_all() called, but _stream_proc == NULL");
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}
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uint buf;
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MidiEvent my_evs[64];
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for (buf = 0; buf < NUM_BUFFERS; buf++) {
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if (!_req_sent[buf] || CheckIO((IORequest *) _stream_req[buf])) {
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int num = _stream_proc(_stream_param, my_evs, 64);
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if (_req_sent[buf]) {
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WaitIO((IORequest *) _stream_req[buf]);
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_req_sent[buf] = false;
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}
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/* end of stream? */
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if (num == 0)
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break;
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MIDIEVENT *ev = (MIDIEVENT *) _stream_buf[buf];
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MidiEvent *my_ev = my_evs;
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for (int i = 0; i < num; i++, my_ev++) {
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ev->me_StreamID = 0;
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ev->me_DeltaTime = my_ev->delta;
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switch (my_ev->event >> 24) {
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case 0:
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ev->me_Event = my_ev->event;
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break;
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case ME_TEMPO:
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/* change tempo event */
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ev->me_Event = (MEVT_TEMPO << 24) | (my_ev->event & 0xFFFFFF);
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break;
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default:
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error("Invalid event type passed");
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}
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/* increase stream pointer by 12 bytes
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* (need to be 12 bytes, and sizeof(MIDIEVENT) is 16)
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*/
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ev = (MIDIEVENT *)((byte *)ev + 12);
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}
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ConvertWindowsMidiStream(_stream_buf[buf], num * 12);
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_stream_req[buf]->emr_Std.io_Command = CMD_WRITE;
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_stream_req[buf]->emr_Std.io_Data = _stream_buf[buf];
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_stream_req[buf]->emr_Std.io_Length = num * 12;
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SendIO((IORequest *) _stream_req[buf]);
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_req_sent[buf] = true;
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}
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}
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}
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void MidiDriver_ETUDE::pause(bool p)
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{
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if (_mode == MO_STREAMING && ScummMidiRequest) {
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if (p)
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PauseMidiStream(ScummMidiRequest);
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else
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RestartMidiStream(ScummMidiRequest);
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}
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}
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uint32 MidiDriver_ETUDE::property(int prop, uint32 param)
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{
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switch (prop) {
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/* 16-bit time division according to standard midi specification */
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case PROP_TIMEDIV:
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_time_div = (uint16)param;
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return 1;
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}
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return 0;
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}
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extern MidiDriver* EtudeMidiDriver;
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MidiDriver *MidiDriver_ETUDE_create()
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{
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EtudeMidiDriver = new MidiDriver_ETUDE();
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return EtudeMidiDriver;
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}
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#endif // __MORPHOS__
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#if defined(UNIX) && !defined(__BEOS__)
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#define SEQ_MIDIPUTC 5
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#define SPECIAL_CHANNEL 9
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class MidiDriver_SEQ:public MidiDriver_MPU401 {
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public:
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MidiDriver_SEQ();
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int open(int mode);
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void close();
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void send(uint32 b);
|
|
void pause(bool p);
|
|
void set_stream_callback(void *param, StreamCallback *sc);
|
|
// void setPitchBendRange (byte channel, uint range);
|
|
|
|
private:
|
|
StreamCallback *_stream_proc;
|
|
void *_stream_param;
|
|
int _mode;
|
|
int device, _device_num;
|
|
};
|
|
|
|
MidiDriver_SEQ::MidiDriver_SEQ()
|
|
{
|
|
_mode = 0;
|
|
device = 0;
|
|
_device_num = 0;
|
|
}
|
|
|
|
int MidiDriver_SEQ::open(int mode)
|
|
{
|
|
if (_mode != 0)
|
|
return MERR_ALREADY_OPEN;
|
|
device = 0;
|
|
if (mode != MO_SIMPLE)
|
|
return MERR_STREAMING_NOT_AVAILABLE;
|
|
|
|
_mode = mode;
|
|
|
|
char *device_name = getenv("SCUMMVM_MIDI");
|
|
if (device_name != NULL) {
|
|
device = (::open((device_name), O_RDWR, 0));
|
|
} else {
|
|
warning("You need to set-up the SCUMMVM_MIDI environment variable properly (see README) ");
|
|
}
|
|
if ((device_name == NULL) || (device < 0)) {
|
|
if (device_name == NULL)
|
|
warning("Opening /dev/null (no music will be heard) ");
|
|
else
|
|
warning("Cannot open rawmidi device %s - using /dev/null (no music will be heard) ",
|
|
device_name);
|
|
device = (::open(("/dev/null"), O_RDWR, 0));
|
|
if (device < 0)
|
|
error("Cannot open /dev/null to dump midi output");
|
|
}
|
|
|
|
if (getenv("SCUMMVM_MIDIPORT"))
|
|
_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
|
|
return 0;
|
|
}
|
|
|
|
void MidiDriver_SEQ::close()
|
|
{
|
|
::close(device);
|
|
_mode = 0;
|
|
}
|
|
|
|
|
|
void MidiDriver_SEQ::send(uint32 b)
|
|
{
|
|
unsigned char buf[256];
|
|
int position = 0;
|
|
|
|
switch (b & 0xF0) {
|
|
case 0x80:
|
|
case 0x90:
|
|
case 0xA0:
|
|
case 0xB0:
|
|
case 0xE0:
|
|
buf[position++] = SEQ_MIDIPUTC;
|
|
buf[position++] = (unsigned char)b;
|
|
buf[position++] = _device_num;
|
|
buf[position++] = 0;
|
|
buf[position++] = SEQ_MIDIPUTC;
|
|
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
|
|
buf[position++] = _device_num;
|
|
buf[position++] = 0;
|
|
buf[position++] = SEQ_MIDIPUTC;
|
|
buf[position++] = (unsigned char)((b >> 16) & 0x7F);
|
|
buf[position++] = _device_num;
|
|
buf[position++] = 0;
|
|
break;
|
|
case 0xC0:
|
|
case 0xD0:
|
|
buf[position++] = SEQ_MIDIPUTC;
|
|
buf[position++] = (unsigned char)b;
|
|
buf[position++] = _device_num;
|
|
buf[position++] = 0;
|
|
buf[position++] = SEQ_MIDIPUTC;
|
|
buf[position++] = (unsigned char)((b >> 8) & 0x7F);
|
|
buf[position++] = _device_num;
|
|
buf[position++] = 0;
|
|
break;
|
|
default:
|
|
fprintf(stderr, "Unknown : %08x\n", (int)b);
|
|
break;
|
|
}
|
|
write(device, buf, position);
|
|
}
|
|
|
|
void MidiDriver_SEQ::pause(bool p)
|
|
{
|
|
if (_mode == MO_STREAMING) {
|
|
}
|
|
}
|
|
|
|
void MidiDriver_SEQ::set_stream_callback(void *param, StreamCallback *sc)
|
|
{
|
|
_stream_param = param;
|
|
_stream_proc = sc;
|
|
}
|
|
|
|
MidiDriver *MidiDriver_SEQ_create()
|
|
{
|
|
return new MidiDriver_SEQ();
|
|
}
|
|
|
|
#endif
|
|
|