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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
extern "C" {
#include "../softseq.h"
#include "../sequencer.h"
#include "../device.h"
#include "resource.h"
#include "sci_memory.h"
}
#include "mt32/mt32emu.h"
/* FIXME */
#define FREESCI_GAMEDIR ".freesci"
#define SAMPLE_RATE 32000
#define CHANNELS SFX_PCM_STEREO_LR
#define STEREO 1
static MT32Emu::Synth *synth;
static sfx_sequencer_t *mt32seq;
static int initializing;
/* MIDI writer */
static int
mt32_midi_init(struct _midi_writer *self) {
return SFX_OK;
}
static int
mt32_midi_set_option(struct _midi_writer *self, char *name, char *value) {
return SFX_ERROR;
}
static int
mt32_midi_write(struct _midi_writer *self, unsigned char *buf, int len) {
if (buf[0] == 0xf0)
synth->playSysex(buf, len);
else if (len < 4) {
MT32Emu::Bit32u msg;
msg = buf[0];
if (len > 0)
msg |= buf[1] << 8;
if (len > 1)
msg |= buf[2] << 16;
synth->playMsg(msg);
} else
sciprintf("MT32EMU: Skipping non-sysex message of more than 3 bytes.\n");
return SFX_OK;
}
static void
mt32_midi_delay(struct _midi_writer *self, int ticks) {
}
static void
mt32_midi_reset_timer(struct _midi_writer *self) {
}
static void
mt32_midi_close(struct _midi_writer *self) {
}
static midi_writer_t midi_writer_mt32 = {
"mt32",
mt32_midi_init,
mt32_midi_set_option,
mt32_midi_write,
mt32_midi_delay,
NULL,
mt32_midi_reset_timer,
mt32_midi_close
};
/* Software sequencer */
static void printDebug(void *userData, const char *fmt, va_list list) {
if (initializing) {
vprintf(fmt, list);
printf("\n");
}
}
static void
mt32_poll(sfx_softseq_t *self, byte *dest, int count) {
synth->render((MT32Emu::Bit16s *) dest, count);
}
static int
mt32_init(sfx_softseq_t *self, byte *data_ptr, int data_length, byte *data2_ptr,
int data2_length) {
MT32Emu::SynthProperties prop;
char *home = sci_get_homedir();
char *romdir;
if (!home) {
sciprintf("MT32EMU: Couldn't determine home directory.\n");
return SFX_ERROR;
}
romdir = (char *) sci_malloc(sizeof(home) + 2 * sizeof(G_DIR_SEPARATOR_S)
+ sizeof(FREESCI_GAMEDIR) + 1);
strcpy(romdir, home);
strcat(romdir, G_DIR_SEPARATOR_S);
strcat(romdir, FREESCI_GAMEDIR);
strcat(romdir, G_DIR_SEPARATOR_S);
mt32seq = sfx_find_sequencer("MT32");
if (!mt32seq) {
sciprintf("MT32EMU: Unable to find MT32 sequencer.\n");
return SFX_ERROR;
}
prop.sampleRate = SAMPLE_RATE;
prop.useReverb = true;
prop.useDefaultReverb = true;
prop.baseDir = romdir;
prop.userData = NULL;
prop.report = NULL;
prop.printDebug = printDebug;
prop.openFile = NULL;
prop.closeFile = NULL;
initializing = 1;
synth = new MT32Emu::Synth();
if (!synth->open(prop))
return SFX_ERROR;
initializing = 0;
mt32seq->open(data_length, data_ptr, data2_length, data2_ptr,
&midi_writer_mt32);
free(romdir);
return SFX_OK;
}
static void
mt32_exit(sfx_softseq_t *self) {
synth->close();
delete synth;
mt32seq->close();
}
static void
mt32_allstop(sfx_softseq_t *self) {
if (mt32seq->allstop)
mt32seq->allstop();
}
static void
mt32_volume(sfx_softseq_t *self, int volume) {
if (mt32seq->volume)
mt32seq->volume(volume / 2); /* High volume causes clipping. */
}
static int
mt32_set_option(sfx_softseq_t *self, const char *name, const char *value) {
return SFX_ERROR;
}
static void
mt32_event(sfx_softseq_t *self, byte cmd, int argc, byte *argv) {
mt32seq->event(cmd, argc, argv);
}
sfx_softseq_t sfx_softseq_mt32 = {
"mt32emu",
"0.1",
mt32_set_option,
mt32_init,
mt32_exit,
mt32_volume,
mt32_event,
mt32_poll,
mt32_allstop,
NULL,
001, /* patch.001 */
SFX_SEQ_PATCHFILE_NONE,
0x01, /* playflag */
1, /* do play channel 9 */
32, /* Max polypgony */
{SAMPLE_RATE, CHANNELS, SFX_PCM_FORMAT_S16_NATIVE}
};
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