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- Support for MIDI on Linux via alsa sequencer

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This commit is contained in:
Petr Mrázek 2020-01-02 00:11:45 +01:00 committed by Christoph Oelckers
parent 118e3db5ca
commit ea1b8de405
13 changed files with 795 additions and 22 deletions
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28
libraries/zmusic/CMakeLists.txt
View file

@ -10,6 +10,11 @@ endif()
include( CheckFunctionExists )
find_package( ALSA )
if (WIN32 OR ALSA_FOUND)
add_definitions( -DHAVE_SYSTEM_MIDI )
endif()
if( DYN_SNDFILE)
add_definitions( -DHAVE_SNDFILE -DDYN_SNDFILE )
else()
@ -44,13 +49,21 @@ endif()
include_directories( "${CMAKE_CURRENT_SOURCE_DIR}/../libraries/dumb/include" "${ZLIB_INCLUDE_DIR}" "${ADL_INCLUDE_DIR}" "${OPN_INCLUDE_DIR}" "${TIMIDITYPP_INCLUDE_DIR}" "${TIMIDITY_INCLUDE_DIR}" "${WILDMIDI_INCLUDE_DIR}" "${OPLSYNTH_INCLUDE_DIR}" "${GME_INCLUDE_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}" )
if (WIN32)
set( PLAT_SOURCES
mididevices/music_win_mididevice.cpp
musicformats/win32/i_cd.cpp
musicformats/win32/helperthread.cpp
)
set( PLAT_SOURCES
mididevices/music_win_mididevice.cpp
musicformats/win32/i_cd.cpp
musicformats/win32/helperthread.cpp
)
elseif(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
if (ALSA_FOUND)
set( PLAT_SOURCES
mididevices/music_alsa_mididevice.cpp
mididevices/music_alsa_state.cpp
)
endif()
endif()
file( GLOB HEADER_FILES
zmusic/*.h
mididevices/*.h
@ -111,6 +124,11 @@ if( NOT DYN_FLUIDSYNTH AND FLUIDSYNTH_FOUND )
target_link_libraries( zmusic ${FLUIDSYNTH_LIBRARIES} )
endif()
if(ALSA_FOUND)
include_directories( "${ALSA_INCLUDE_DIR}" )
target_link_libraries( zmusic ${ALSA_LIBRARIES} )
endif()
source_group("MIDI Devices" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/mididevices/.+")
source_group("MIDI Sources" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/midisources/.+")
source_group("Music Formats" REGULAR_EXPRESSION "^${CMAKE_CURRENT_SOURCE_DIR}/musicformats/.+")

3
libraries/zmusic/mididevices/mididevice.h
View file

@ -154,3 +154,6 @@ MIDIDevice *CreateWildMIDIDevice(const char *Args, int samplerate);
MIDIDevice* CreateWinMIDIDevice(int mididevice);
#endif
#ifdef __linux__
MIDIDevice* CreateAlsaMIDIDevice(int mididevice);
#endif

434
libraries/zmusic/mididevices/music_alsa_mididevice.cpp Normal file
View file

@ -0,0 +1,434 @@
/*
** Provides an ALSA implementation of a MIDI output device.
**
**---------------------------------------------------------------------------
** Copyright 2008-2010 Randy Heit
** Copyright 2020 Petr Mrazek
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#if defined __linux__ && defined HAVE_SYSTEM_MIDI
#include <algorithm>
#include <memory>
#include <assert.h>
#include <thread>
#include <pthread.h>
#include <atomic>
#include <cstring>
#include "mididevice.h"
#include "zmusic/m_swap.h"
#include "zmusic/mus2midi.h"
#include "music_alsa_state.h"
#include <alsa/asoundlib.h>
namespace {
class AlsaMIDIDevice : public MIDIDevice
{
public:
AlsaMIDIDevice(int dev_id);
~AlsaMIDIDevice();
int Open() override;
void Close() override;
bool IsOpen() const override;
int GetTechnology() const override;
int SetTempo(int tempo) override;
int SetTimeDiv(int timediv) override;
int StreamOut(MidiHeader *data) override;
int StreamOutSync(MidiHeader *data) override;
int Resume() override;
void Stop() override;
bool FakeVolume() override {
// Not sure if we even can control the volume this way with Alsa, so make it fake.
return true;
};
bool Pause(bool paused) override;
void InitPlayback() override;
bool Update() override;
void PrecacheInstruments(const uint16_t *instruments, int count) override {}
bool CanHandleSysex() const override
{
// Assume we can, let Alsa sort it out. We do not truly have full control.
return true;
}
void HandleTempoChange(int tick, int tempo);
void HandleEvent(int tick, int status, int parm1, int parm2);
void HandleLongEvent(int tick, const uint8_t *data, int len);
void SendStopEvents();
void PumpEvents();
protected:
AlsaSequencer &sequencer;
MidiHeader *Events = nullptr;
bool Started = false;
uint32_t Position = 0;
const static int IntendedPortId = 0;
bool Connected = false;
int PortId = -1;
int QueueId = -1;
int DestinationClientId;
int DestinationPortId;
int Tempo = 480000;
int TimeDiv = 480;
std::thread PlayerThread;
std::atomic<bool> Exit;
};
}
AlsaMIDIDevice::AlsaMIDIDevice(int dev_id) : sequencer(AlsaSequencer::Get())
{
auto & internalDevices = sequencer.GetInternalDevices();
auto & device = internalDevices.at(dev_id);
DestinationClientId = device.ClientID;
DestinationPortId = device.PortNumber;
}
AlsaMIDIDevice::~AlsaMIDIDevice()
{
Close();
}
int AlsaMIDIDevice::Open()
{
if (!sequencer.IsOpen()) {
return 1;
}
if(PortId < 0)
{
snd_seq_port_info_t *pinfo;
snd_seq_port_info_alloca(&pinfo);
snd_seq_port_info_set_port(pinfo, IntendedPortId);
snd_seq_port_info_set_port_specified(pinfo, 1);
snd_seq_port_info_set_name(pinfo, "GZDoom Music");
snd_seq_port_info_set_capability(pinfo, 0);
snd_seq_port_info_set_type(pinfo, SND_SEQ_PORT_TYPE_MIDI_GENERIC | SND_SEQ_PORT_TYPE_APPLICATION);
int err = 0;
err = snd_seq_create_port(sequencer.handle, pinfo);
PortId = IntendedPortId;
}
if (QueueId < 0)
{
QueueId = snd_seq_alloc_named_queue(sequencer.handle, "GZDoom Queue");
}
if (!Connected) {
Connected = (snd_seq_connect_to(sequencer.handle, PortId, DestinationClientId, DestinationPortId) == 0);
}
return 0;
}
void AlsaMIDIDevice::Close()
{
if(Connected) {
snd_seq_disconnect_to(sequencer.handle, PortId, DestinationClientId, DestinationPortId);
Connected = false;
}
if(QueueId >= 0) {
snd_seq_free_queue(sequencer.handle, QueueId);
QueueId = -1;
}
if(PortId >= 0) {
snd_seq_delete_port(sequencer.handle, PortId);
PortId = -1;
}
}
bool AlsaMIDIDevice::IsOpen() const
{
return Connected;
}
int AlsaMIDIDevice::GetTechnology() const
{
// TODO: implement properly, for now assume everything is an external MIDI device
return MIDIDEV_MIDIPORT;
}
int AlsaMIDIDevice::SetTempo(int tempo)
{
Tempo = tempo;
return 0;
}
int AlsaMIDIDevice::SetTimeDiv(int timediv)
{
TimeDiv = timediv;
return 0;
}
void AlsaMIDIDevice::HandleEvent(int tick, int status, int parm1, int parm2)
{
int command = status & 0xF0;
int channel = status & 0x0F;
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, PortId);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_schedule_tick(&ev, QueueId, false, tick);
switch (command)
{
case MIDI_NOTEOFF:
snd_seq_ev_set_noteoff(&ev, channel, parm1, parm2);
break;
case MIDI_NOTEON:
snd_seq_ev_set_noteon(&ev, channel, parm1, parm2);
break;
case MIDI_POLYPRESS:
// FIXME: Seems to be missing in the Alsa sequencer implementation
return;
case MIDI_CTRLCHANGE:
snd_seq_ev_set_controller(&ev, channel, parm1, parm2);
break;
case MIDI_PRGMCHANGE:
snd_seq_ev_set_pgmchange(&ev, channel, parm1);
break;
case MIDI_CHANPRESS:
snd_seq_ev_set_chanpress(&ev, channel, parm1);
break;
case MIDI_PITCHBEND: {
long bend = ((long)parm1 + (long)(parm2 << 7)) - 0x2000;
snd_seq_ev_set_pitchbend(&ev, channel, bend);
break;
}
default:
return;
}
snd_seq_event_output(sequencer.handle, &ev);
}
void AlsaMIDIDevice::HandleLongEvent(int tick, const uint8_t *data, int len)
{
// SysEx messages...
if (len > 1 && (data[0] == 0xF0 || data[0] == 0xF7))
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, PortId);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_schedule_tick(&ev, QueueId, false, tick);
snd_seq_ev_set_sysex(&ev, len, (void *)data);
snd_seq_event_output(sequencer.handle, &ev);
}
}
void AlsaMIDIDevice::HandleTempoChange(int tick, int tempo) {
if(Tempo != tempo) {
Tempo = tempo;
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, PortId);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_schedule_tick(&ev, QueueId, false, tick);
snd_seq_change_queue_tempo(sequencer.handle, QueueId, Tempo, &ev);
snd_seq_event_output(sequencer.handle, &ev);
}
}
void AlsaMIDIDevice::PumpEvents() {
int error = 0;
snd_seq_queue_tempo_t *tempo;
snd_seq_queue_tempo_alloca(&tempo);
snd_seq_queue_tempo_set_tempo(tempo, Tempo);
snd_seq_queue_tempo_set_ppq(tempo, TimeDiv);
error = snd_seq_set_queue_tempo(sequencer.handle, QueueId, tempo);
snd_seq_start_queue(sequencer.handle, QueueId, NULL);
error = snd_seq_drain_output(sequencer.handle);
int running_time = 0;
while (!Exit) {
if(!Events) {
// NOTE: in practice, this is never reached. however, if it were, it would prevent crashes below.
continue;
}
uint32_t *event = (uint32_t *)(Events->lpData + Position);
int ticks = event[0];
running_time += ticks;
if (MEVENT_EVENTTYPE(event[2]) == MEVENT_TEMPO) {
HandleTempoChange(running_time, MEVENT_EVENTPARM(event[2]));
}
else if (MEVENT_EVENTTYPE(event[2]) == MEVENT_LONGMSG) {
HandleLongEvent(running_time, (uint8_t *)&event[3], MEVENT_EVENTPARM(event[2]));
}
else if (MEVENT_EVENTTYPE(event[2]) == 0) {
// Short MIDI event
int status = event[2] & 0xff;
int parm1 = (event[2] >> 8) & 0x7f;
int parm2 = (event[2] >> 16) & 0x7f;
HandleEvent(running_time, status, parm1, parm2);
}
// Advance to next event.
if (event[2] < 0x80000000)
{ // Short message
Position += 12;
}
else
{ // Long message
Position += 12 + ((MEVENT_EVENTPARM(event[2]) + 3) & ~3);
}
// Did we use up this buffer?
if (Position >= Events->dwBytesRecorded)
{
Events = Events->lpNext;
Position = 0;
if (Callback != NULL)
{
Callback(CallbackData);
}
snd_seq_drain_output(sequencer.handle);
snd_seq_sync_output_queue(sequencer.handle);
}
}
// Send stop events, just to be sure we don't end up with stuck notes
{
snd_seq_drop_output(sequencer.handle);
SendStopEvents();
// FIXME: attach to a timestamped event and make it go through the queue?
snd_seq_stop_queue(sequencer.handle, QueueId, NULL);
snd_seq_drain_output(sequencer.handle);
snd_seq_sync_output_queue(sequencer.handle);
}
}
void AlsaMIDIDevice::SendStopEvents() {
// NOTE: for some reason, the midi streamer doesn't send us these.
for (int channel = 0; channel < 16; ++channel)
{
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, PortId);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_schedule_tick(&ev, QueueId, true, 0);
snd_seq_ev_set_controller(&ev, channel, MIDI_CTL_ALL_NOTES_OFF, 0);
snd_seq_event_output(sequencer.handle, &ev);
snd_seq_ev_set_controller(&ev, channel, MIDI_CTL_RESET_CONTROLLERS, 0);
snd_seq_event_output(sequencer.handle, &ev);
}
snd_seq_drain_output(sequencer.handle);
snd_seq_sync_output_queue(sequencer.handle);
}
int AlsaMIDIDevice::Resume()
{
if(!Connected) {
return 1;
}
Exit = false;
PlayerThread = std::thread(&AlsaMIDIDevice::PumpEvents, this);
return 0;
}
void AlsaMIDIDevice::InitPlayback()
{
Exit = false;
}
void AlsaMIDIDevice::Stop()
{
/*
* NOTE: this is slow. Maybe we should just leave the thread be and let it asynchronously drain in the background.
*/
Exit = true;
PlayerThread.join();
}
bool AlsaMIDIDevice::Pause(bool paused)
{
// TODO: implement
return false;
}
int AlsaMIDIDevice::StreamOut(MidiHeader *header)
{
header->lpNext = NULL;
if (Events == NULL)
{
Events = header;
Position = 0;
}
else
{
MidiHeader **p;
for (p = &Events; *p != NULL; p = &(*p)->lpNext)
{ }
*p = header;
}
return 0;
}
int AlsaMIDIDevice::StreamOutSync(MidiHeader *header)
{
return StreamOut(header);
}
bool AlsaMIDIDevice::Update()
{
return true;
}
MIDIDevice *CreateAlsaMIDIDevice(int mididevice)
{
return new AlsaMIDIDevice(mididevice);
}
#endif

166
libraries/zmusic/mididevices/music_alsa_state.cpp Normal file
View file

@ -0,0 +1,166 @@
/*
** Provides an implementation of an ALSA sequencer wrapper
**
**---------------------------------------------------------------------------
** Copyright 2020 Petr Mrazek
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include "music_alsa_state.h"
#if defined __linux__ && defined HAVE_SYSTEM_MIDI
#include <alsa/asoundlib.h>
#include <sstream>
AlsaSequencer & AlsaSequencer::Get() {
static AlsaSequencer sequencer;
return sequencer;
}
AlsaSequencer::AlsaSequencer() {
Open();
}
AlsaSequencer::~AlsaSequencer() {
Close();
}
bool AlsaSequencer::Open() {
error = snd_seq_open(&handle, "default", SND_SEQ_OPEN_DUPLEX, 0);
if(error) {
return false;
}
error = snd_seq_set_client_name(handle, "GZDoom");
if(error) {
snd_seq_close(handle);
handle = nullptr;
return false;
}
OurId = snd_seq_client_id(handle);
if (OurId < 0) {
error = OurId;
OurId = -1;
snd_seq_close(handle);
handle = nullptr;
return false;
}
return true;
}
void AlsaSequencer::Close() {
if(!handle) {
return;
}
snd_seq_close(handle);
handle = nullptr;
}
namespace {
bool filter(snd_seq_port_info_t *pinfo)
{
int capability = snd_seq_port_info_get_capability(pinfo);
if(capability & SND_SEQ_PORT_CAP_NO_EXPORT) {
return false;
}
const int writable = (SND_SEQ_PORT_CAP_WRITE|SND_SEQ_PORT_CAP_SUBS_WRITE);
if((capability & writable) != writable) {
return false;
}
int type = snd_seq_port_info_get_type(pinfo);
return true;
}
}
int AlsaSequencer::EnumerateDevices() {
if(!handle) {
return 0;
}
snd_seq_client_info_t *cinfo;
snd_seq_port_info_t *pinfo;
snd_seq_client_info_alloca(&cinfo);
snd_seq_port_info_alloca(&pinfo);
int index = 0;
// enumerate clients
snd_seq_client_info_set_client(cinfo, -1);
while (snd_seq_query_next_client(handle, cinfo) >= 0) {
snd_seq_port_info_set_client(pinfo, snd_seq_client_info_get_client(cinfo));
// Ignore 'ALSA oddities' that we don't want to use
int clientID = snd_seq_client_info_get_client(cinfo);
if(clientID < 16) {
continue;
}
snd_seq_port_info_set_port(pinfo, -1);
// enumerate ports
while (snd_seq_query_next_port(handle, pinfo) >= 0) {
if (!filter(pinfo)) {
continue;
}
externalDevices.emplace_back();
internalDevices.emplace_back();
auto & item = externalDevices.back();
auto & itemInternal = internalDevices.back();
itemInternal.ID = item.ID = index++;
const char *name = snd_seq_port_info_get_name(pinfo);
int portNumber = snd_seq_port_info_get_port(pinfo);
if(!name) {
std::ostringstream out;
out << "MIDI Port " << clientID << ":" << portNumber;
itemInternal.Name = item.Name = out.str();
}
else {
itemInternal.Name = item.Name = name;
}
itemInternal.ClientID = clientID;
itemInternal.PortNumber = portNumber;
itemInternal.type = snd_seq_port_info_get_type(pinfo);
}
}
return index;
}
const std::vector<MidiOutDeviceInternal> & AlsaSequencer::GetInternalDevices()
{
return internalDevices;
}
const std::vector<MidiOutDevice> & AlsaSequencer::GetDevices() {
return externalDevices;
}
#endif

81
libraries/zmusic/mididevices/music_alsa_state.h Normal file
View file

@ -0,0 +1,81 @@
/*
** Provides an implementation of an ALSA sequencer wrapper
**
**---------------------------------------------------------------------------
** Copyright 2008-2010 Randy Heit
** Copyright 2020 Petr Mrazek
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#pragma once
#if defined __linux__ && defined HAVE_SYSTEM_MIDI
#include "zmusic/zmusic.h"
#include <vector>
#include <string>
typedef struct _snd_seq snd_seq_t;
// FIXME: make not visible from outside
struct MidiOutDeviceInternal {
std::string Name;
int ID = -1;
int ClientID = -1;
int PortNumber = -1;
unsigned int type = 0;
};
// NOTE: the sequencer state is shared between actually playing MIDI music and device enumeration, therefore we keep it around.
class AlsaSequencer {
private:
AlsaSequencer();
~AlsaSequencer();
public:
static AlsaSequencer &Get();
bool Open();
void Close();
bool IsOpen() const {
return nullptr != handle;
}
int EnumerateDevices();
const std::vector<MidiOutDevice> &GetDevices();
const std::vector<MidiOutDeviceInternal> &GetInternalDevices();
snd_seq_t *handle = nullptr;
int OurId = -1;
int error = -1;
private:
std::vector<MidiOutDeviceInternal> internalDevices;
std::vector<MidiOutDevice> externalDevices;
};
#endif

26
libraries/zmusic/musicformats/music_midi.cpp
View file

@ -41,6 +41,12 @@
#include "mididevices/mididevice.h"
#include "midisources/midisource.h"
#ifdef HAVE_SYSTEM_MIDI
#ifdef __linux__
#include "mididevices/music_alsa_state.h"
#endif
#endif
// MACROS ------------------------------------------------------------------
enum
@ -226,8 +232,8 @@ EMidiDevice MIDIStreamer::SelectMIDIDevice(EMidiDevice device)
case -7: return MDEV_ADL;
case -8: return MDEV_OPN;
default:
#ifdef _WIN32
return MDEV_MMAPI;
#ifdef HAVE_SYSTEM_MIDI
return MDEV_STANDARD;
#else
return MDEV_SNDSYS;
#endif
@ -268,13 +274,17 @@ MIDIDevice *MIDIStreamer::CreateMIDIDevice(EMidiDevice devtype, int samplerate)
dev = CreateOPNMIDIDevice(Args.c_str());
break;
case MDEV_MMAPI:
case MDEV_STANDARD:
#ifdef HAVE_SYSTEM_MIDI
#ifdef _WIN32
dev = CreateWinMIDIDevice(std::max(0, miscConfig.snd_mididevice));
#elif __linux__
dev = CreateAlsaMIDIDevice(std::max(0, miscConfig.snd_mididevice));
#endif
break;
#endif
// Intentional fall-through for non-Windows systems.
// Intentional fall-through for systems without standard midi support
#ifdef HAVE_FLUIDSYNTH
case MDEV_FLUIDSYNTH:
@ -308,8 +318,8 @@ MIDIDevice *MIDIStreamer::CreateMIDIDevice(EMidiDevice devtype, int samplerate)
else if (!checked[MDEV_TIMIDITY]) devtype = MDEV_TIMIDITY;
else if (!checked[MDEV_WILDMIDI]) devtype = MDEV_WILDMIDI;
else if (!checked[MDEV_GUS]) devtype = MDEV_GUS;
#ifdef _WIN32
else if (!checked[MDEV_MMAPI]) devtype = MDEV_MMAPI;
#ifdef HAVE_SYSTEM_MIDI
else if (!checked[MDEV_STANDARD]) devtype = MDEV_STANDARD;
#endif
else if (!checked[MDEV_OPL]) devtype = MDEV_OPL;
@ -374,9 +384,9 @@ bool MIDIStreamer::DumpWave(const char *filename, int subsong, int samplerate)
assert(MIDI == NULL);
auto devtype = SelectMIDIDevice(DeviceType);
if (devtype == MDEV_MMAPI)
if (devtype == MDEV_STANDARD)
{
throw std::runtime_error("MMAPI device is not supported");
throw std::runtime_error("System MIDI device is not supported");
}
auto iMIDI = CreateMIDIDevice(devtype, samplerate);
auto writer = new MIDIWaveWriter(filename, static_cast<SoftSynthMIDIDevice*>(iMIDI));

33
libraries/zmusic/zmusic/configuration.cpp
View file

@ -40,6 +40,7 @@
#include "zmusic.h"
#include "musinfo.h"
#include "midiconfig.h"
#include "mididevices/music_alsa_state.h"
struct Dummy
{
@ -78,6 +79,38 @@ void ZMusic_SetDmxGus(const void* data, unsigned len)
memcpy(gusConfig.dmxgus.data(), data, len);
}
int ZMusic_EnumerateMidiDevices()
{
#ifdef HAVE_SYSTEM_MIDI
#ifdef __linux__
auto & sequencer = AlsaSequencer::Get();
return sequencer.EnumerateDevices();
#elif _WIN32
// TODO: move the weird stuff from music_midi_base.cpp here, or at least to this lib and call it here
return {};
#endif
#else
return {};
#endif
}
const std::vector<MidiOutDevice> &ZMusic_GetMidiDevices()
{
#ifdef HAVE_SYSTEM_MIDI
#ifdef __linux__
auto & sequencer = AlsaSequencer::Get();
return sequencer.GetDevices();
#elif _WIN32
// TODO: move the weird stuff from music_midi_base.cpp here, or at least to this lib and call it here
return {};
#endif
#else
return {};
#endif
}
template<class valtype>
void ChangeAndReturn(valtype &variable, valtype value, valtype *realv)
{

2
libraries/zmusic/zmusic/mididefs.h
View file

@ -43,7 +43,7 @@ enum EMidiEvent : uint8_t
enum EMidiDevice
{
MDEV_DEFAULT = -1,
MDEV_MMAPI = 0,
MDEV_STANDARD = 0,
MDEV_OPL = 1,
MDEV_SNDSYS = 2,
MDEV_TIMIDITY = 3,

8
libraries/zmusic/zmusic/zmusic.cpp
View file

@ -210,10 +210,10 @@ MusInfo *ZMusic_OpenSong (MusicIO::FileInterface *reader, EMidiDevice device, co
delete source;
return nullptr;
}
#ifndef _WIN32
// non-Windows platforms don't support MDEV_MMAPI so map to MDEV_SNDSYS
if (device == MDEV_MMAPI)
#ifndef HAVE_SYSTEM_MIDI
// some platforms don't support MDEV_STANDARD so map to MDEV_SNDSYS
if (device == MDEV_STANDARD)
device = MDEV_SNDSYS;
#endif

9
libraries/zmusic/zmusic/zmusic.h
View file

@ -2,6 +2,8 @@
#include "mididefs.h"
#include "../../music_common/fileio.h"
#include <vector>
#include <string>
namespace ZMusic // Namespaced because these conflict with the same-named CVARs
{
@ -149,6 +151,13 @@ void ZMusic_SetWgOpn(const void* data, unsigned len);
// Set DMXGUS data for running the GUS synth in actual GUS mode.
void ZMusic_SetDmxGus(const void* data, unsigned len);
struct MidiOutDevice {
std::string Name;
int ID = -1;
};
int ZMusic_EnumerateMidiDevices();
const std::vector<MidiOutDevice> &ZMusic_GetMidiDevices();
// These exports are needed by the MIDI dumpers which need to remain on the client side.
class MIDISource; // abstract for the client
class MusInfo;

3
src/sound/music/i_music.cpp
View file

@ -270,9 +270,12 @@ void I_InitMusic (void)
nomusic = !!Args->CheckParm("-nomusic") || !!Args->CheckParm("-nosound");
// TODO: remove, move functionality to ZMusic_EnumerateMidiDevices
#ifdef _WIN32
I_InitMusicWin32 ();
#endif // _WIN32
ZMusic_EnumerateMidiDevices();
snd_mididevice.Callback();
Callbacks callbacks;

22
src/sound/music/music_midi_base.cpp
View file

@ -167,12 +167,20 @@ CCMD (snd_listmididevices)
}
}
}
#else
#else // _WIN32
void I_BuildMIDIMenuList (FOptionValues *opt)
{
AddDefaultMidiDevices(opt);
auto devices = ZMusic_GetMidiDevices();
for (auto & device: devices)
{
FOptionValues::Pair *pair = &opt->mValues[opt->mValues.Reserve(1)];
pair->Text = device.Name.c_str();
pair->Value = (float)device.ID;
}
}
CCMD (snd_listmididevices)
@ -184,13 +192,21 @@ CCMD (snd_listmididevices)
Printf("%s-4. Gravis Ultrasound Emulation\n", -4 == snd_mididevice ? TEXTCOLOR_BOLD : "");
Printf("%s-3. Emulated OPL FM Synth\n", -3 == snd_mididevice ? TEXTCOLOR_BOLD : "");
Printf("%s-2. TiMidity++\n", -2 == snd_mididevice ? TEXTCOLOR_BOLD : "");
auto devices = ZMusic_GetMidiDevices();
for (auto & device: devices)
{
Printf("%s%d. %s\n", -2 == snd_mididevice ? TEXTCOLOR_BOLD : "", device.ID, device.Name.c_str());
}
}
#endif
CUSTOM_CVAR (Int, snd_mididevice, DEF_MIDIDEV, CVAR_ARCHIVE|CVAR_GLOBALCONFIG|CVAR_NOINITCALL)
{
if ((self >= (signed)nummididevices) || (self < -8))
auto devices = ZMusic_GetMidiDevices();
if ((self >= (signed)devices.size()) || (self < -8))
{
// Don't do repeated message spam if there is no valid device.
if (self != 0)

2
src/sound/s_advsound.cpp
View file

@ -1230,7 +1230,7 @@ static void S_AddSNDINFO (int lump)
MidiDeviceSetting devset;
if (sc.Compare("timidity")) devset.device = MDEV_TIMIDITY;
else if (sc.Compare("fmod") || sc.Compare("sndsys")) devset.device = MDEV_SNDSYS;
else if (sc.Compare("standard")) devset.device = MDEV_MMAPI;
else if (sc.Compare("standard")) devset.device = MDEV_STANDARD;
else if (sc.Compare("opl")) devset.device = MDEV_OPL;
else if (sc.Compare("default")) devset.device = MDEV_DEFAULT;
else if (sc.Compare("fluidsynth")) devset.device = MDEV_FLUIDSYNTH;