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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.
*
* $URL$
* $Id$
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_PROTO_CAMD_H
#include "sfx_engine.h"
#include "../device.h"
#include <proto/camd.h>
#include <proto/dos.h>
#include <proto/exec.h>
#include <proto/intuition.h>
#include <stdio.h>
#define SWAP_BYTES
#define FILL_BYTES
#define SCI_CAMD_MIDI_VERSION "0.1"
#define SYSEX_PREFIX 0xf0
static const char *devicename = "via686.out.0";
struct Library *CamdBase = NULL;
struct CamdIFace *ICamd = NULL;
static struct MidiLink *midi_link = NULL;
static struct MidiNode *midi_node = NULL;
#define ABORT(m) { \
if (CamdBase) \
IExec->CloseLibrary(CamdBase); \
sciprintf("[SFX] CAMD driver: "); \
sciprintf(m); \
sciprintf("\n"); \
return SFX_ERROR; \
}
static int
camd_init(midi_writer_t *self) {
sciprintf("[SFX] Initialising CAMD raw MIDI backend, v%s\n", SCI_CAMD_MIDI_VERSION);
CamdBase = IExec->OpenLibrary("camd.library", 36L);
if (!CamdBase)
ABORT("Could not open 'camd.library'");
ICamd = (struct CamdIFace *) IExec->GetInterface(CamdBase, "main", 1, NULL);
if (!ICamd)
ABORT("Error while retrieving CAMD interface\n");
midi_node = ICamd->CreateMidi(MIDI_MsgQueue, 0L, MIDI_SysExSize, 4096L, MIDI_Name, "freesci", TAG_END);
if (!midi_node)
ABORT("Could not create CAMD MIDI node");
midi_link = ICamd->AddMidiLink(midi_node, MLTYPE_Sender, MLINK_Location, devicename, TAG_END);
if (!midi_link)
ABORT(("Could not create CAMD MIDI link to '%s'", devicename));
sciprintf("[SFX] CAMD initialisation completed\n");
return SFX_OK;
}
static int
camd_set_option(midi_writer_t *self, char *name, char *value) {
return SFX_ERROR;
}
#define MAX_MIDI_LEN 3
static int
camd_write(midi_writer_t *self, unsigned char *buffer, int len) {
if (len == 0)
return SFX_OK;
if (buffer[0] == SYSEX_PREFIX) {
/* Must send this as a SysEx */
ICamd->PutSysEx(midi_link, buffer);
} else {
ULONG data = 0l;
int i;
int readlen = (len > MAX_MIDI_LEN) ? MAX_MIDI_LEN : len;
for (i = 0; i < readlen; i++)
if (len >= i) {
data <<= 8;
data |= buffer[i];
}
data <<= (8 * (sizeof(ULONG) - readlen));
if (len > MAX_MIDI_LEN)
sciprintf("[SFX] Warning: Truncated MIDI message to fit CAMD format (sent %d: %02x %02x %02x, real length %d)\n",
MAX_MIDI_LEN, buffer[0], buffer[1], buffer[2], len);
ICamd->PutMidi(midi_link, data);
}
return SFX_OK;
}
static void
camd_delay(midi_writer_t *self, int ticks) {
}
static void
camd_reset_timer(midi_writer_t *self) {
}
static void
camd_close(midi_writer_t *self) {
#ifdef NO_OP
return;
#endif
if (CamdBase)
IExec->CloseLibrary(CamdBase);
}
midi_writer_t sfx_device_midi_camd = {
"camd-midi",
&camd_init,
&camd_set_option,
&camd_write,
&camd_delay,
NULL,
&camd_reset_timer,
&camd_close
};
#endif /* HAVE_PROTO_CAMD_H */
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