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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.
*
* $URL$
* $Id$
*/
#include "common/scummsys.h"
#if defined(__amigaos4__)
#include "common/endian.h"
#include "common/util.h"
#include "sound/musicplugin.h"
#include "sound/mpu401.h"
#include <proto/camd.h>
#include <proto/exec.h>
/*
* CAMD sequencer driver
* Mostly cut'n'pasted from FreeSCI by Christoph Reichenbach
*/
class MidiDriver_CAMD : public MidiDriver_MPU401 {
public:
MidiDriver_CAMD();
int open();
void close();
void send(uint32 b);
void sysEx(const byte *msg, uint16 length);
private:
bool _isOpen;
struct Library *_CamdBase;
struct CamdIFace *_ICamd;
struct MidiLink *_midi_link;
char *getDevice();
void closeAll();
};
MidiDriver_CAMD::MidiDriver_CAMD()
: _isOpen(false), _CamdBase(NULL), _ICamd(NULL), _midi_link(NULL) {
}
int MidiDriver_CAMD::open() {
if (_isOpen)
return MERR_ALREADY_OPEN;
_CamdBase = IExec->OpenLibrary("camd.library", 36L);
if (!_CamdBase) {
error("Could not open 'camd.library'");
return -1;
}
_ICamd = (struct CamdIFace *) IExec->GetInterface(_CamdBase, "main", 1, NULL);
if (!_ICamd) {
closeAll();
error("Error while retrieving CAMD interface");
return -1;
}
struct MidiNode *midi_node;
midi_node = _ICamd->CreateMidi(MIDI_MsgQueue, 0L, MIDI_SysExSize, 4096L, MIDI_Name, "scummvm", TAG_END);
if (!midi_node) {
closeAll();
error("Could not create CAMD MIDI node");
return -1;
}
char *devicename = getDevice();
if (!devicename) {
closeAll();
error("Could not find an output device");
return MERR_DEVICE_NOT_AVAILABLE;
}
_midi_link = _ICamd->AddMidiLink(midi_node, MLTYPE_Sender, MLINK_Location, devicename, TAG_END);
if (!_midi_link) {
closeAll();
error("Could not create CAMD MIDI link to '%s'", devicename);
return MERR_CANNOT_CONNECT;
}
_isOpen = true;
return 0;
}
void MidiDriver_CAMD::close() {
MidiDriver_MPU401::close();
closeAll();
}
void MidiDriver_CAMD::send(uint32 b) {
ULONG data = READ_LE_UINT32(&b);
_ICamd->PutMidi(_midi_link, data);
}
void MidiDriver_CAMD::sysEx(const byte *msg, uint16 length) {
unsigned char buf[266];
assert(length + 2 <= ARRAYSIZE(buf));
// Add SysEx frame
buf[0] = 0xF0;
memcpy(buf + 1, msg, length);
buf[length + 1] = 0xF7;
// Send it
_ICamd->PutSysEx(_midi_link, buf);
}
char *MidiDriver_CAMD::getDevice() {
char *retname = NULL;
APTR key;
if (key = _ICamd->LockCAMD(CD_Linkages)) {
struct MidiCluster *cluster = _ICamd->NextCluster(NULL);
while (cluster && !retname) {
// Get the current cluster name
char *dev = cluster->mcl_Node.ln_Name;
if (strstr(dev, "out") != NULL) {
// This is an output device, return this
retname = dev;
} else {
// Search the next one
cluster = _ICamd->NextCluster(cluster);
}
}
_ICamd->UnlockCAMD(key);
}
return retname;
}
void MidiDriver_CAMD::closeAll() {
if (_ICamd)
IExec->DropInterface((struct Interface *)_ICamd);
if (_CamdBase)
IExec->CloseLibrary(_CamdBase);
_isOpen = false;
}
// Plugin interface
class CamdMusicPlugin : public MusicPluginObject {
public:
const char *getName() const {
return "CAMD";
}
const char *getId() const {
return "camd";
}
MusicDevices getDevices() const;
Common::Error createInstance(MidiDriver **mididriver) const;
};
MusicDevices CamdMusicPlugin::getDevices() const {
MusicDevices devices;
// TODO: Return a different music type depending on the configuration
// TODO: List the available devices
devices.push_back(MusicDevice(this, "", MT_GM));
return devices;
}
Common::Error CamdMusicPlugin::createInstance(MidiDriver **mididriver) const {
*mididriver = new MidiDriver_CAMD();
return Common::kNoError;
}
MidiDriver *MidiDriver_CAMD_create() {
MidiDriver *mididriver;
CamdMusicPlugin p;
p.createInstance(&mididriver);
return mididriver;
}
//#if PLUGIN_ENABLED_DYNAMIC(CAMD)
//REGISTER_PLUGIN_DYNAMIC(CAMD, PLUGIN_TYPE_MUSIC, CamdMusicPlugin);
//#else
REGISTER_PLUGIN_STATIC(CAMD, PLUGIN_TYPE_MUSIC, CamdMusicPlugin);
//#endif
#endif
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