earliest MIDI input! (no note input tho)

CMakeLists.txt

@@ -177,6 +177,7 @@ endif()
 
 set(AUDIO_SOURCES
 src/audio/abstract.cpp
+src/audio/midi.cpp
 src/audio/sdl.cpp
 )
 
@@ -199,6 +200,7 @@ endif()
 if (USE_RTMIDI)
   list(APPEND AUDIO_SOURCES src/audio/rtmidi.cpp)
   message(STATUS "Building with RtMidi")
+  list(APPEND DEPENDENCIES_DEFINES HAVE_RTMIDI)
 else()
   message(STATUS "Building without RtMidi")
 endif()

TODO.md

@@ -0,0 +1,15 @@
+# to-do for 0.6
+
+- **auto-backup. please.**
+- non-monospaced fonts in pattern editor
+- panning macro
+- pitch macro
+- sample editor
+  - keybinds
+  - don't allow editing samples that aren't 8/16-bit
+  - maybe an hex editor
+- piano/input pad
+- MIDI input
+- all the systems
+- Also confused as to why after playing a row with Ctrl-Enter, you are locked out of moving the cursor outside of +/- 1 position and THEN typing something places it under the actual cursor, and not the ghost cursor. it seems like just a way to get "please can we play rows" people to be quiet because it's otherwise effectively useless
+- edit latch! and maybe separate edit masks

amongus/RtMidiConfigUninstall.cmake.in

@@ -0,0 +1,21 @@
+if(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+  message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")
+endif(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+
+file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+foreach(file ${files})
+  message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
+  if(EXISTS "$ENV{DESTDIR}${file}")
+    exec_program(
+      "@CMAKE_COMMAND@" ARGS "-E remove \"$ENV{DESTDIR}${file}\""
+      OUTPUT_VARIABLE rm_out
+      RETURN_VALUE rm_retval
+      )
+    if(NOT "${rm_retval}" STREQUAL 0)
+      message(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
+    endif(NOT "${rm_retval}" STREQUAL 0)
+  else(EXISTS "$ENV{DESTDIR}${file}")
+    message(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
+  endif(EXISTS "$ENV{DESTDIR}${file}")
+endforeach(file)

src/audio/abstract.cpp

@@ -56,3 +56,61 @@ bool TAAudio::init(TAAudioDesc& request, TAAudioDesc& response) {
 
 TAAudio::~TAAudio() {
 }
+
+bool TAMidiIn::gather() {
+  return false;
+}
+
+bool TAMidiIn::isDeviceOpen() {
+  return false;
+}
+
+bool TAMidiOut::isDeviceOpen() {
+  return false;
+}
+
+bool TAMidiIn::openDevice(String name) {
+  return false;
+}
+
+bool TAMidiOut::openDevice(String name) {
+  return false;
+}
+
+bool TAMidiIn::closeDevice() {
+  return false;
+}
+
+bool TAMidiOut::closeDevice() {
+  return false;
+}
+
+std::vector<String> TAMidiIn::listDevices() {
+  return std::vector<String>();
+}
+
+std::vector<String> TAMidiOut::listDevices() {
+  return std::vector<String>();
+}
+
+bool TAMidiIn::init() {
+  return false;
+}
+
+bool TAMidiOut::init() {
+  return false;
+}
+
+bool TAMidiIn::quit() {
+  return true;
+}
+
+bool TAMidiOut::quit() {
+  return true;
+}
+
+TAMidiIn::~TAMidiIn() {
+}
+
+TAMidiOut::~TAMidiOut() {
+}

src/audio/jack.cpp

@@ -52,6 +52,7 @@ void TAAudioJACK::onBufferSize(jack_nframes_t bufsize) {
 
 void TAAudioJACK::onProcess(jack_nframes_t nframes) {
   if (audioProcCallback!=NULL) {
+    if (midiIn!=NULL) midiIn->gather();
     audioProcCallback(audioProcCallbackUser,inBufs,outBufs,desc.inChans,desc.outChans,desc.bufsize);
   }
   for (int i=0; i<desc.inChans; i++) {

src/audio/midi.cpp

@@ -0,0 +1,61 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2022 tildearrow and contributors
+ *
+ * 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.
+ */
+
+#include "taAudio.h"
+#ifdef HAVE_RTMIDI
+#include "rtmidi.h"
+#endif
+
+bool TAAudio::initMidi(bool jack) {
+#ifndef HAVE_RTMIDI
+  return false;
+#else
+  midiIn=new TAMidiInRtMidi;
+  midiOut=new TAMidiOutRtMidi;
+
+  if (!midiIn->init()) {
+    delete midiIn;
+    midiIn=NULL;
+    return false;
+  }
+
+  if (!midiOut->init()) {
+    midiIn->quit();
+    delete midiOut;
+    delete midiIn;
+    midiOut=NULL;
+    midiIn=NULL;
+    return false;
+  }
+  return true;
+#endif
+}
+
+void TAAudio::quitMidi() {
+  if (midiIn!=NULL) {
+    midiIn->quit();
+    delete midiIn;
+    midiIn=NULL;
+  }
+  if (midiOut!=NULL) {
+    midiOut->quit();
+    delete midiOut;
+    midiOut=NULL;
+  }
+}

src/audio/rtmidi.cpp

@@ -1 +1,201 @@
+/**
+ * Furnace Tracker - multi-system chiptune tracker
+ * Copyright (C) 2021-2022 tildearrow and contributors
+ *
+ * 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.
+ */
+
 #include "rtmidi.h"
+#include "../ta-log.h"
+
+// --- IN ---
+
+bool TAMidiInRtMidi::gather() {
+  std::vector<unsigned char> msg;
+  if (port==NULL) return false;
+  while (true) {
+    TAMidiMessage m;
+    double t=port->getMessage(&msg);
+    if (msg.empty()) break;
+
+    // parse message
+    m.time=t;
+    m.type=msg[0];
+    if (m.type!=TA_MIDI_SYSEX && msg.size()>1) {
+      memcpy(m.data,msg.data()+1,MIN(msg.size()-1,7));
+    }
+    queue.push(m);
+  }
+  return true;
+}
+
+std::vector<String> TAMidiInRtMidi::listDevices() {
+  std::vector<String> ret;
+  logD("listing devices.\n");
+  if (port==NULL) return ret;
+
+  try {
+    unsigned int count=port->getPortCount();
+    logD("got port count.\n");
+    for (unsigned int i=0; i<count; i++) {
+      String name=port->getPortName(i);
+      if (name!="") ret.push_back(name);
+    }
+  } catch (RtMidiError& e) {
+    logW("could not get MIDI inputs! %s\n",e.what());
+  }
+  return ret;
+}
+
+bool TAMidiInRtMidi::isDeviceOpen() {
+  return isOpen;
+}
+
+bool TAMidiInRtMidi::openDevice(String name) {
+  if (port==NULL) return false;
+  if (isOpen) return false;
+  try {
+    bool portOpen=false;
+    unsigned int count=port->getPortCount();
+    for (unsigned int i=0; i<count; i++) {
+      if (port->getPortName(i)==name) {
+        port->openPort(i);
+        portOpen=true;
+        break;
+      }
+    }
+    isOpen=portOpen;
+    return portOpen;
+  } catch (RtMidiError& e) {
+    logW("could not open MIDI in device! %s\n",e.what());
+    return false;
+  }
+  return true;
+}
+
+bool TAMidiInRtMidi::closeDevice() {
+  if (port==NULL) return false;
+  if (!isOpen) return false;
+  try {
+    port->closePort();
+  } catch (RtMidiError& e) {
+    logW("could not close MIDI in device! %s\n",e.what());
+    isOpen=false; // still
+    return false;
+  }
+  isOpen=false;
+  return true;
+}
+
+bool TAMidiInRtMidi::init() {
+  if (port!=NULL) return true;
+  try {
+    port=new RtMidiIn;
+  } catch (RtMidiError& e) {
+    logW("could not initialize RtMidi in! %s\n",e.what());
+    return false;
+  }
+  return true;
+}
+
+bool TAMidiInRtMidi::quit() {
+  if (port!=NULL) {
+    delete port;
+    port=NULL;
+  }
+  return true;
+}
+
+// --- OUT ---
+
+bool TAMidiOutRtMidi::send(TAMidiMessage& what) {
+  // TODO
+  return false;
+}
+
+bool TAMidiOutRtMidi::isDeviceOpen() {
+  return isOpen;
+}
+
+bool TAMidiOutRtMidi::openDevice(String name) {
+  if (port==NULL) return false;
+  if (isOpen) return false;
+  try {
+    bool portOpen=false;
+    unsigned int count=port->getPortCount();
+    for (unsigned int i=0; i<count; i++) {
+      if (port->getPortName(i)==name) {
+        port->openPort(i);
+        portOpen=true;
+        break;
+      }
+    }
+    isOpen=portOpen;
+    return portOpen;
+  } catch (RtMidiError& e) {
+    logW("could not open MIDI out device! %s\n",e.what());
+    return false;
+  }
+  return true;
+}
+
+bool TAMidiOutRtMidi::closeDevice() {
+  if (port==NULL) return false;
+  if (!isOpen) return false;
+  try {
+    port->closePort();
+  } catch (RtMidiError& e) {
+    logW("could not close MIDI out device! %s\n",e.what());
+    isOpen=false; // still
+    return false;
+  }
+  isOpen=false;
+  return true;
+}
+
+std::vector<String> TAMidiOutRtMidi::listDevices() {
+  std::vector<String> ret;
+  if (port==NULL) return ret;
+
+  try {
+    unsigned int count=port->getPortCount();
+    for (unsigned int i=0; i<count; i++) {
+      String name=port->getPortName(i);
+      if (name!="") ret.push_back(name);
+    }
+  } catch (RtMidiError& e) {
+    logW("could not get MIDI outputs! %s\n",e.what());
+  }
+  return ret;
+}
+
+bool TAMidiOutRtMidi::init() {
+  if (port!=NULL) return true;
+  try {
+    port=new RtMidiOut;
+  } catch (RtMidiError& e) {
+    logW("could not initialize RtMidi out! %s\n",e.what());
+    return false;
+  }
+  return true;
+}
+
+bool TAMidiOutRtMidi::quit() {
+  if (port!=NULL) {
+    delete port;
+    port=NULL;
+  }
+  return true;
+}

src/audio/rtmidi.h

@@ -21,9 +21,33 @@
 #include "taAudio.h"
 
 class TAMidiInRtMidi: public TAMidiIn {
-
+  RtMidiIn* port;
+  bool isOpen;
+  public:
+    bool gather();
+    bool isDeviceOpen();
+    bool openDevice(String name);
+    bool closeDevice();
+    std::vector<String> listDevices();
+    bool quit();
+    bool init();
+    TAMidiInRtMidi():
+      port(NULL),
+      isOpen(false) {}
 };
 
 class TAMidiOutRtMidi: public TAMidiOut {
-
+  RtMidiOut* port;
+  bool isOpen;
+  public:
+    bool send(TAMidiMessage& what);
+    bool isDeviceOpen();
+    bool openDevice(String name);
+    bool closeDevice();
+    std::vector<String> listDevices();
+    bool quit();
+    bool init();
+    TAMidiOutRtMidi():
+      port(NULL),
+      isOpen(false) {}
 };

src/audio/sdl.cpp

@@ -30,6 +30,7 @@ void taSDLProcess(void* inst, unsigned char* buf, int nframes) {
 
 void TAAudioSDL::onProcess(unsigned char* buf, int nframes) {
   if (audioProcCallback!=NULL) {
+    if (midiIn!=NULL) midiIn->gather();
     audioProcCallback(audioProcCallbackUser,inBufs,outBufs,desc.inChans,desc.outChans,desc.bufsize);
   }
   float* fbuf=(float*)buf;

src/audio/taAudio.h

@@ -90,28 +90,9 @@ enum TAMidiMessageTypes {
 };
 
 struct TAMidiMessage {
+  double time;
   unsigned char type;
-  union {
-    struct {
-      unsigned char note, vol;
-    } note;
-    struct {
-      unsigned char which, val;
-    } control;
-    unsigned char patch;
-    unsigned char pressure;
-    struct {
-      unsigned char low, high;
-    } pitch;
-    struct {
-      unsigned int vendor;
-    } sysEx;
-    unsigned char timeCode;
-    struct {
-      unsigned char low, high;
-    } position;
-    unsigned char song;
-  } data;
+  unsigned char data[7];
   unsigned char* sysExData;
   size_t sysExLen;
 
@@ -119,6 +100,7 @@ struct TAMidiMessage {
   void done();
 
   TAMidiMessage():
+    time(0.0),
     type(0),
     sysExData(NULL),
     sysExLen(0) {
@@ -127,16 +109,34 @@ struct TAMidiMessage {
 };
 
 class TAMidiIn {
-  std::queue<TAMidiMessage> queue;
   public:
+    std::queue<TAMidiMessage> queue;
     virtual bool gather();
     bool next(TAMidiMessage& where);
+    virtual bool isDeviceOpen();
+    virtual bool openDevice(String name);
+    virtual bool closeDevice();
+    virtual std::vector<String> listDevices();
+    virtual bool init();
+    virtual bool quit();
+    TAMidiIn() {
+    }
+    virtual ~TAMidiIn();
 };
 
 class TAMidiOut {
   std::queue<TAMidiMessage> queue;
   public:
     bool send(TAMidiMessage& what);
+    virtual bool isDeviceOpen();
+    virtual bool openDevice(String name);
+    virtual bool closeDevice();
+    virtual std::vector<String> listDevices();
+    virtual bool init();
+    virtual bool quit();
+    TAMidiOut() {
+    }
+    virtual ~TAMidiOut();
 };
 
 class TAAudio {
@@ -162,6 +162,8 @@ class TAAudio {
     virtual bool quit();
     virtual bool setRun(bool run);
     virtual std::vector<String> listAudioDevices();
+    bool initMidi(bool jack);
+    void quitMidi();
     virtual bool init(TAAudioDesc& request, TAAudioDesc& response);
 
     TAAudio():
@@ -172,7 +174,9 @@ class TAAudio {
       outBufs(NULL),
       audioProcCallback(NULL),
       sampleRateChanged(NULL),
-      bufferSizeChanged(NULL) {}
+      bufferSizeChanged(NULL),
+      midiIn(NULL),
+      midiOut(NULL) {}
 
     virtual ~TAAudio();
 };

src/engine/engine.cpp

@@ -2653,10 +2653,24 @@ std::vector<String>& DivEngine::getAudioDevices() {
   return audioDevs;
 }
 
+std::vector<String>& DivEngine::getMidiIns() {
+  return midiIns;
+}
+
+std::vector<String>& DivEngine::getMidiOuts() {
+  return midiOuts;
+}
+
 void DivEngine::rescanAudioDevices() {
   audioDevs.clear();
   if (output!=NULL) {
     audioDevs=output->listAudioDevices();
+    if (output->midiIn!=NULL) {
+      midiIns=output->midiIn->listDevices();
+    }
+    if (output->midiOut!=NULL) {
+      midiOuts=output->midiOut->listDevices();
+    }
   }
 }
 
@@ -2786,11 +2800,35 @@ bool DivEngine::initAudioBackend() {
     return false;
   }
 
+  if (output->initMidi(false)) {
+    midiIns=output->midiIn->listDevices();
+    midiOuts=output->midiOut->listDevices();
+  } else {
+    logW("error while initializing MIDI!\n");
+  }
+  if (output->midiIn) {
+    String inName=getConfString("midiInDevice","");
+    if (!inName.empty()) {
+      // try opening device
+      logI("opening MIDI input.\n");
+      if (!output->midiIn->openDevice(inName)) {
+        logW("could not open MIDI input device!\n");
+      }
+    }
+  }
+
   return true;
 }
 
 bool DivEngine::deinitAudioBackend() {
   if (output!=NULL) {
+    if (output->midiIn) {
+      if (output->midiIn->isDeviceOpen()) {
+        logI("closing MIDI input.\n");
+        output->midiIn->closeDevice();
+      }
+    }
+    output->quitMidi();
     output->quit();
     delete output;
     output=NULL;

src/engine/engine.h

@@ -214,6 +214,8 @@ class DivEngine {
   String lastError;
   String warnings;
   std::vector<String> audioDevs;
+  std::vector<String> midiIns;
+  std::vector<String> midiOuts;
   std::vector<DivCommand> cmdStream;
 
   struct SamplePreview {
@@ -570,6 +572,12 @@ class DivEngine {
     // get available audio devices
     std::vector<String>& getAudioDevices();
 
+    // get available MIDI inputs
+    std::vector<String>& getMidiIns();
+
+    // get available MIDI inputs
+    std::vector<String>& getMidiOuts();
+
     // rescan audio devices
     void rescanAudioDevices();
 

src/engine/playback.cpp

@@ -1538,6 +1538,31 @@ void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsi
   }
   got.bufsize=size;
 
+  // process MIDI events (TODO: everything)
+  if (output->midiIn) while (!output->midiIn->queue.empty()) {
+    TAMidiMessage& msg=output->midiIn->queue.front();
+    int chan=msg.type&15;
+    switch (msg.type&0xf0) {
+      case TA_MIDI_NOTE_OFF: {
+        if (chan<0 || chan>=chans) break;
+        pendingNotes.push(DivNoteEvent(msg.type&15,-1,-1,-1,false));
+        break;
+      }
+      case TA_MIDI_NOTE_ON: {
+        if (chan<0 || chan>=chans) break;
+        pendingNotes.push(DivNoteEvent(msg.type&15,-1,(int)msg.data[0]-12,msg.data[1],true));
+        break;
+      }
+      case TA_MIDI_PROGRAM: {
+        // TODO: change instrument event thingy
+        break;
+      }
+    }
+    logD("%.2x\n",msg.type);
+    output->midiIn->queue.pop();
+  }
+  
+  // process audio
   if (out!=NULL && ((sPreview.sample>=0 && sPreview.sample<(int)song.sample.size()) || (sPreview.wave>=0 && sPreview.wave<(int)song.wave.size()))) {
     unsigned int samp_bbOff=0;
     unsigned int prevAvail=blip_samples_avail(samp_bb);

src/gui/gui.h

@@ -628,6 +628,8 @@ class FurnaceGUI {
     String mainFontPath;
     String patFontPath;
     String audioDevice;
+    String midiInDevice;
+    String midiOutDevice;
 
     Settings():
       mainFontSize(18),
@@ -679,7 +681,9 @@ class FurnaceGUI {
       maxUndoSteps(100),
       mainFontPath(""),
       patFontPath(""),
-      audioDevice("") {}
+      audioDevice(""),
+      midiInDevice(""),
+      midiOutDevice("") {}
   } settings;
 
   char finalLayoutPath[4096];

src/gui/settings.cpp

@@ -222,7 +222,7 @@ void FurnaceGUI::drawSettings() {
 
         ImGui::EndTabItem();
       }
-      if (ImGui::BeginTabItem("Audio")) {
+      if (ImGui::BeginTabItem("Audio/MIDI")) {
         ImGui::Text("Backend");
         ImGui::SameLine();
         ImGui::Combo("##Backend",&settings.audioEngine,audioBackends,2);
@@ -286,6 +286,38 @@ void FurnaceGUI::drawSettings() {
         ImGui::Text("want: %d samples @ %.0fHz\n",audioWant.bufsize,audioWant.rate);
         ImGui::Text("got: %d samples @ %.0fHz\n",audioGot.bufsize,audioGot.rate);
 
+        ImGui::Separator();
+
+        ImGui::Text("MIDI input");
+        ImGui::SameLine();
+        String midiInName=settings.midiInDevice.empty()?"<disabled>":settings.midiInDevice;
+        if (ImGui::BeginCombo("##MidiInDevice",midiInName.c_str())) {
+          if (ImGui::Selectable("<disabled>",settings.midiInDevice.empty())) {
+            settings.midiInDevice="";
+          }
+          for (String& i: e->getMidiIns()) {
+            if (ImGui::Selectable(i.c_str(),i==settings.midiInDevice)) {
+              settings.midiInDevice=i;
+            }
+          }
+          ImGui::EndCombo();
+        }
+
+        ImGui::Text("MIDI output");
+        ImGui::SameLine();
+        String midiOutName=settings.midiOutDevice.empty()?"<disabled>":settings.midiOutDevice;
+        if (ImGui::BeginCombo("##MidiOutDevice",midiOutName.c_str())) {
+          if (ImGui::Selectable("<disabled>",settings.midiOutDevice.empty())) {
+            settings.midiOutDevice="";
+          }
+          for (String& i: e->getMidiIns()) {
+            if (ImGui::Selectable(i.c_str(),i==settings.midiOutDevice)) {
+              settings.midiOutDevice=i;
+            }
+          }
+          ImGui::EndCombo();
+        }
+
         ImGui::EndTabItem();
       }
       if (ImGui::BeginTabItem("Emulation")) {
@@ -970,6 +1002,8 @@ void FurnaceGUI::syncSettings() {
   settings.iconSize=e->getConfInt("iconSize",16);
   settings.audioEngine=(e->getConfString("audioEngine","SDL")=="SDL")?1:0;
   settings.audioDevice=e->getConfString("audioDevice","");
+  settings.midiInDevice=e->getConfString("midiInDevice","");
+  settings.midiOutDevice=e->getConfString("midiOutDevice","");
   settings.audioQuality=e->getConfInt("audioQuality",0);
   settings.audioBufSize=e->getConfInt("audioBufSize",1024);
   settings.audioRate=e->getConfInt("audioRate",44100);
@@ -1252,6 +1286,8 @@ void FurnaceGUI::commitSettings() {
   e->setConf("iconSize",settings.iconSize);
   e->setConf("audioEngine",String(audioBackends[settings.audioEngine]));
   e->setConf("audioDevice",settings.audioDevice);
+  e->setConf("midiInDevice",settings.midiInDevice);
+  e->setConf("midiOutDevice",settings.midiOutDevice);
   e->setConf("audioQuality",settings.audioQuality);
   e->setConf("audioBufSize",settings.audioBufSize);
   e->setConf("audioRate",settings.audioRate);