diff options
Diffstat (limited to 'backends')
-rw-r--r-- | backends/midi/sndio.cpp | 152 | ||||
-rw-r--r-- | backends/module.mk | 1 |
2 files changed, 153 insertions, 0 deletions
diff --git a/backends/midi/sndio.cpp b/backends/midi/sndio.cpp new file mode 100644 index 0000000000..21c9ea4fec --- /dev/null +++ b/backends/midi/sndio.cpp @@ -0,0 +1,152 @@ +/* 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. + */ + +// Disable symbol overrides so that we can use system headers. +#define FORBIDDEN_SYMBOL_ALLOW_ALL + +#include "common/scummsys.h" + +#if defined(USE_SNDIO) + +#include "common/error.h" +#include "common/textconsole.h" +#include "common/util.h" +#include "audio/musicplugin.h" +#include "audio/mpu401.h" + +#include <sndio.h> + +//////////////////////////////////////// +// +// sndio MIDI driver +// +//////////////////////////////////////// + +class MidiDriver_Sndio : public MidiDriver_MPU401 { +public: + MidiDriver_Sndio(); + int open(); + bool isOpen() const { return hdl != NULL; } + void close(); + void send(uint32 b); + void sysEx(const byte *msg, uint16 length); + +private: + struct mio_hdl *hdl; +}; + +MidiDriver_Sndio::MidiDriver_Sndio() { + hdl = NULL; +} + +int MidiDriver_Sndio::open() { + if (hdl != NULL) + return MERR_ALREADY_OPEN; + + hdl = ::mio_open(NULL, MIO_OUT, 0); + if (hdl == NULL) + warning("Could open MIDI port (no music)"); + return 0; +} + +void MidiDriver_Sndio::close() { + MidiDriver_MPU401::close(); + if (!hdl) + return; + mio_close(hdl); + hdl = NULL; +} + +void MidiDriver_Sndio::send(uint32 b) { + unsigned char buf[4]; + unsigned int len; + + if (!hdl) + return; + buf[0] = b & 0xff; + buf[1] = (b >> 8) & 0xff; + buf[2] = (b >> 16) & 0xff; + buf[3] = (b >> 24) & 0xff; + switch (buf[0] & 0xf0) { + case 0xf0: + return; + case 0xc0: + case 0xd0: + len = 2; + break; + default: + len = 3; + } + mio_write(hdl, buf, len); +} + +void MidiDriver_Sndio::sysEx(const byte *msg, uint16 length) { + if (!hdl) + return; + + unsigned char buf[266]; + + assert(length + 2 <= ARRAYSIZE(buf)); + + // Add SysEx frame + buf[0] = 0xF0; + memcpy(buf + 1, msg, length); + buf[length + 1] = 0xF7; + + mio_write(hdl, buf, length + 2); +} + + +// Plugin interface + +class SndioMusicPlugin : public MusicPluginObject { +public: + const char *getName() const { + return "Sndio"; + } + + const char *getId() const { + return "sndio"; + } + + MusicDevices getDevices() const; + Common::Error createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle = 0) const; +}; + +MusicDevices SndioMusicPlugin::getDevices() const { + MusicDevices devices; + devices.push_back(MusicDevice(this, "", MT_GM)); + return devices; +} + +Common::Error SndioMusicPlugin::createInstance(MidiDriver **mididriver, MidiDriver::DeviceHandle) const { + *mididriver = new MidiDriver_Sndio(); + + return Common::kNoError; +} + +//#if PLUGIN_ENABLED_DYNAMIC(Sndio) + //REGISTER_PLUGIN_DYNAMIC(SNDIO, PLUGIN_TYPE_MUSIC, SndioMusicPlugin); +//#else + REGISTER_PLUGIN_STATIC(SNDIO, PLUGIN_TYPE_MUSIC, SndioMusicPlugin); +//#endif + +#endif diff --git a/backends/module.mk b/backends/module.mk index 95725d9d87..a4f525d21d 100644 --- a/backends/module.mk +++ b/backends/module.mk @@ -11,6 +11,7 @@ MODULE_OBJS := \ midi/alsa.o \ midi/dmedia.o \ midi/seq.o \ + midi/sndio.o \ midi/stmidi.o \ midi/timidity.o \ saves/savefile.o \ |