mirror of
https://github.com/libretro/scummvm.git
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5b3f31feec
An #include was missing, causing the driver to never be built. Also fixed what looked like a cut-and-paste error in generating the features string. svn-id: r51056
213 lines
5.2 KiB
C++
213 lines
5.2 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*/
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/*
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* Raw output support by Michael Pearce
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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 "common/scummsys.h"
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#if defined(USE_SEQ_MIDI)
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#include "common/util.h"
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#include "sound/musicplugin.h"
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#include "sound/mpu401.h"
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#include <fcntl.h>
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#include <unistd.h>
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////////////////////////////////////////
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//
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// Unix dev/sequencer driver
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//
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////////////////////////////////////////
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#define SEQ_MIDIPUTC 5
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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();
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void close();
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void send(uint32 b);
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void sysEx(const byte *msg, uint16 length);
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private:
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bool _isOpen;
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int device, _device_num;
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};
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MidiDriver_SEQ::MidiDriver_SEQ() {
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_isOpen = false;
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device = 0;
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_device_num = 0;
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}
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int MidiDriver_SEQ::open() {
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char *device_name;
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char dev_seq[] = "/dev/sequencer";
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if (_isOpen)
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return MERR_ALREADY_OPEN;
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_isOpen = true;
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device = 0;
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device_name = getenv("SCUMMVM_MIDI");
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if (device_name == NULL) {
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warning("SCUMMVM_MIDI environment variable not set, using /dev/sequencer");
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device_name = dev_seq;
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}
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device = (::open((device_name), O_RDWR, 0));
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if ((device_name == NULL) || (device < 0)) {
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if (device_name == NULL)
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warning("Opening /dev/null (no music will be heard) ");
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else
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warning("Cannot open rawmidi device %s - using /dev/null (no music will be heard) ",
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device_name);
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device = (::open(("/dev/null"), O_RDWR, 0));
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if (device < 0)
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error("Cannot open /dev/null to dump midi output");
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}
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if (getenv("SCUMMVM_MIDIPORT"))
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_device_num = atoi(getenv("SCUMMVM_MIDIPORT"));
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return 0;
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}
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void MidiDriver_SEQ::close() {
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MidiDriver_MPU401::close();
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::close(device);
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_isOpen = false;
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}
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void MidiDriver_SEQ::send(uint32 b) {
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unsigned char buf[256];
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int position = 0;
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switch (b & 0xF0) {
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case 0x80:
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case 0x90:
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case 0xA0:
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case 0xB0:
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case 0xE0:
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char)b;
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buf[position++] = _device_num;
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buf[position++] = 0;
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char)((b >> 8) & 0x7F);
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buf[position++] = _device_num;
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buf[position++] = 0;
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char)((b >> 16) & 0x7F);
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buf[position++] = _device_num;
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buf[position++] = 0;
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break;
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case 0xC0:
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case 0xD0:
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char)b;
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buf[position++] = _device_num;
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buf[position++] = 0;
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char)((b >> 8) & 0x7F);
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buf[position++] = _device_num;
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buf[position++] = 0;
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break;
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default:
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warning("MidiDriver_SEQ::send: unknown : %08x", (int)b);
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break;
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}
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(void)write(device, buf, position);
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}
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void MidiDriver_SEQ::sysEx (const byte *msg, uint16 length) {
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unsigned char buf [266*4];
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int position = 0;
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const byte *chr = msg;
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assert(length + 2 <= 266);
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = 0xF0;
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buf[position++] = _device_num;
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buf[position++] = 0;
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for (; length; --length, ++chr) {
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = (unsigned char) *chr & 0x7F;
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buf[position++] = _device_num;
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buf[position++] = 0;
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}
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buf[position++] = SEQ_MIDIPUTC;
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buf[position++] = 0xF7;
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buf[position++] = _device_num;
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buf[position++] = 0;
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(void)write(device, buf, position);
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}
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// Plugin interface
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class SeqMusicPlugin : public MusicPluginObject {
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public:
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const char *getName() const {
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return "SEQ";
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}
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const char *getId() const {
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return "seq";
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}
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MusicDevices getDevices() const;
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Common::Error createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle = 0) const;
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};
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MusicDevices SeqMusicPlugin::getDevices() const {
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MusicDevices devices;
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// TODO: Return a different music type depending on the configuration
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// TODO: List the available devices
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devices.push_back(MusicDevice(this, "", MT_GM));
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return devices;
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}
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Common::Error SeqMusicPlugin::createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle) const {
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*mididriver = new MidiDriver_SEQ();
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return Common::kNoError;
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}
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//#if PLUGIN_ENABLED_DYNAMIC(SEQ)
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//REGISTER_PLUGIN_DYNAMIC(SEQ, PLUGIN_TYPE_MUSIC, SeqMusicPlugin);
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//#else
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REGISTER_PLUGIN_STATIC(SEQ, PLUGIN_TYPE_MUSIC, SeqMusicPlugin);
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//#endif
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#endif
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