ref: 43eec25b1bef0a0257086e4de55e1edb073fa36c
dir: /src/ft2_midi.c/
#ifdef HAS_MIDI
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdio.h>
#include <stdbool.h>
#include "ft2_header.h"
#include "ft2_edit.h"
#include "ft2_config.h"
#include "ft2_gui.h"
#include "ft2_midi.h"
#include "ft2_audio.h"
#include "ft2_mouse.h"
#include "ft2_pattern_ed.h"
#include "ft2_structs.h"
#include "rtmidi/rtmidi_c.h"
// hide POSIX warnings
#ifdef _MSC_VER
#pragma warning(disable: 4996)
#endif
// This implements MIDI input only!
midi_t midi; // globalized
static volatile bool midiDeviceOpened;
static bool recMIDIValidChn = true;
static RtMidiPtr midiDev;
static inline void midiInSetChannel(uint8_t status)
{
recMIDIValidChn = (config.recMIDIAllChn || (status & 0xF) == config.recMIDIChn-1);
}
static inline void midiInKeyAction(int8_t m, uint8_t mv)
{
int16_t vol = (mv * 64 * config.recMIDIVolSens) / (127 * 100);
if (vol > 64)
vol = 64;
// FT2 bugfix: If velocity>0, and sensitivity made vol=0, set vol to 1 (prevent key off)
if (mv > 0 && vol == 0)
vol = 1;
if (mv > 0 && !config.recMIDIVelocity)
vol = -1; // don't record volume (velocity)
m -= 11;
if (config.recMIDITransp)
m += (int8_t)config.recMIDITranspVal;
if ((mv == 0 || vol != 0) && m > 0 && m < 96 && recMIDIValidChn)
recordNote(m, (int8_t)vol);
}
static inline void midiInControlChange(uint8_t data1, uint8_t data2)
{
if (data1 != 1) // 1 = modulation wheel
return;
midi.currMIDIVibDepth = data2 << 6;
if (recMIDIValidChn) // real FT2 forgot to check this here..
{
for (uint8_t i = 0; i < song.antChn; i++)
{
if (stm[i].midiVibDepth != 0 || editor.keyOnTab[i] != 0)
stm[i].midiVibDepth = midi.currMIDIVibDepth;
}
}
const uint8_t vibDepth = (midi.currMIDIVibDepth >> 9) & 0x0F;
if (vibDepth > 0 && recMIDIValidChn)
recordMIDIEffect(0x04, 0xA0 | vibDepth);
}
static inline void midiInPitchBendChange(uint8_t data1, uint8_t data2)
{
int16_t pitch = (int16_t)((data2 << 7) | data1) - 8192; // -8192..8191
pitch >>= 6; // -128..127
midi.currMIDIPitch = pitch;
if (recMIDIValidChn)
{
stmTyp *ch = stm;
for (uint8_t i = 0; i < song.antChn; i++, ch++)
{
if (ch->midiPitch != 0 || editor.keyOnTab[i] != 0)
ch->midiPitch = midi.currMIDIPitch;
}
}
}
static void midiInCallback(double dTimeStamp, const unsigned char *message, size_t messageSize, void *userData)
{
uint8_t byte[3];
if (!midi.enable || messageSize < 2)
return;
byte[0] = message[0];
if (byte[0] > 127 && byte[0] < 240)
{
byte[1] = message[1] & 0x7F;
if (messageSize >= 3)
byte[2] = message[2] & 0x7F;
else
byte[2] = 0;
midiInSetChannel(byte[0]);
if (byte[0] >= 128 && byte[0] <= 128+15) midiInKeyAction(byte[1], 0);
else if (byte[0] >= 144 && byte[0] <= 144+15) midiInKeyAction(byte[1], byte[2]);
else if (byte[0] >= 176 && byte[0] <= 176+15) midiInControlChange(byte[1], byte[2]);
else if (byte[0] >= 224 && byte[0] <= 224+15) midiInPitchBendChange(byte[1], byte[2]);
}
(void)dTimeStamp;
(void)userData;
}
static uint32_t getNumMidiInDevices(void)
{
if (midiDev == NULL)
return 0;
return rtmidi_get_port_count(midiDev);
}
static char *getMidiInDeviceName(uint32_t deviceID)
{
if (midiDev == NULL)
return NULL;
char *devStr = (char *)rtmidi_get_port_name(midiDev, deviceID);
if (!midiDev->ok)
return NULL;
return devStr;
}
void closeMidiInDevice(void)
{
while (!midi.initThreadDone);
if (midiDeviceOpened)
{
if (midiDev != NULL)
{
rtmidi_in_cancel_callback(midiDev);
rtmidi_close_port(midiDev);
}
midiDeviceOpened = false;
}
}
void freeMidiIn(void)
{
while (!midi.initThreadDone);
if (midiDev != NULL)
{
rtmidi_in_free(midiDev);
midiDev = NULL;
}
}
bool initMidiIn(void)
{
if (midiDev != NULL)
return false; // already initialized
midiDev = rtmidi_in_create_default();
if (!midiDev->ok)
{
midiDev = NULL;
return false;
}
midiDeviceOpened = false;
return true;
}
bool openMidiInDevice(uint32_t deviceID)
{
if (midiDev == NULL)
return false;
if (getNumMidiInDevices() == 0)
return false;
rtmidi_open_port(midiDev, deviceID, "FT2 Clone MIDI Port");
if (!midiDev->ok)
return false;
rtmidi_in_set_callback(midiDev, midiInCallback, NULL);
if (!midiDev->ok)
{
rtmidi_close_port(midiDev);
return false;
}
rtmidi_in_ignore_types(midiDev, true, true, true);
midiDeviceOpened = true;
return true;
}
void recordMIDIEffect(uint8_t effTyp, uint8_t effData)
{
// only handle this in record mode
if (!midi.enable || (playMode != PLAYMODE_RECSONG && playMode != PLAYMODE_RECPATT))
return;
const int16_t nr = editor.editPattern;
if (config.multiRec)
{
tonTyp *note = &patt[nr][editor.pattPos * MAX_VOICES];
for (int32_t i = 0; i < song.antChn; i++, note++)
{
if (config.multiRecChn[i] && editor.chnMode[i])
{
if (!allocatePattern(nr))
return;
if (note->effTyp == 0)
{
note->effTyp = effTyp;
note->eff = effData;
setSongModifiedFlag();
}
}
}
}
else
{
if (!allocatePattern(nr))
return;
tonTyp *note = &patt[nr][(editor.pattPos * MAX_VOICES) + cursor.ch];
if (note->effTyp != effTyp || note->eff != effData)
setSongModifiedFlag();
note->effTyp = effTyp;
note->eff = effData;
}
}
bool saveMidiInputDeviceToConfig(void)
{
if (!midi.initThreadDone || midiDev == NULL || !midiDeviceOpened)
return false;
const uint32_t numDevices = getNumMidiInDevices();
if (numDevices == 0)
return false;
char *midiInStr = getMidiInDeviceName(midi.inputDevice);
if (midiInStr == NULL)
return false;
FILE *f = UNICHAR_FOPEN(editor.midiConfigFileLocation, "w");
if (f == NULL)
{
free(midiInStr);
return false;
}
fputs(midiInStr, f);
free(midiInStr);
fclose(f);
return true;
}
bool setMidiInputDeviceFromConfig(void)
{
#define MAX_DEV_STR_LEN 1024
uint32_t i;
if (midi.inputDeviceName != NULL)
free(midi.inputDeviceName);
const uint32_t numDevices = getNumMidiInDevices();
if (numDevices == 0)
goto setDefMidiInputDev;
FILE *f = UNICHAR_FOPEN(editor.midiConfigFileLocation, "r");
if (f == NULL)
goto setDefMidiInputDev;
char *devString = (char *)calloc(MAX_DEV_STR_LEN+4, sizeof (char));
if (devString == NULL)
{
fclose(f);
goto setDefMidiInputDev;
}
if (fgets(devString, MAX_DEV_STR_LEN, f) == NULL)
{
fclose(f);
free(devString);
goto setDefMidiInputDev;
}
fclose(f);
// scan for device in list
char *midiInStr = NULL;
for (i = 0; i < numDevices; i++)
{
midiInStr = getMidiInDeviceName(i);
if (midiInStr == NULL)
continue;
if (!_stricmp(devString, midiInStr))
break; // device matched
free(midiInStr);
midiInStr = NULL;
}
free(devString);
// device not found in list, set default
if (i == numDevices)
goto setDefMidiInputDev;
midi.inputDevice = i;
midi.inputDeviceName = midiInStr;
midi.numInputDevices = numDevices;
return true;
// couldn't load device, set default
setDefMidiInputDev:
midi.inputDevice = 0;
midi.inputDeviceName = strdup("RtMidi");
midi.numInputDevices = numDevices;
return false;
}
void freeMidiInputDeviceList(void)
{
for (int32_t i = 0; i < MAX_MIDI_DEVICES; i++)
{
if (midi.inputDeviceNames[i] != NULL)
{
free(midi.inputDeviceNames[i]);
midi.inputDeviceNames[i] = NULL;
}
}
midi.numInputDevices = 0;
}
void rescanMidiInputDevices(void)
{
freeMidiInputDeviceList();
midi.numInputDevices = getNumMidiInDevices();
if (midi.numInputDevices > MAX_MIDI_DEVICES)
midi.numInputDevices = MAX_MIDI_DEVICES;
for (int32_t i = 0; i < midi.numInputDevices; i++)
{
char *deviceName = getMidiInDeviceName(i);
if (deviceName == NULL)
{
if (midi.numInputDevices > 0)
midi.numInputDevices--; // hide device
continue;
}
midi.inputDeviceNames[i] = deviceName;
}
setScrollBarEnd(SB_MIDI_INPUT_SCROLL, midi.numInputDevices);
setScrollBarPos(SB_MIDI_INPUT_SCROLL, 0, false);
}
void drawMidiInputList(void)
{
clearRect(114, 4, 365, 165);
if (!midi.initThreadDone || midiDev == NULL || midi.numInputDevices == 0)
{
textOut(114, 4 + (0 * 11), PAL_FORGRND, "No MIDI input devices found!");
textOut(114, 4 + (1 * 11), PAL_FORGRND, "Either wait a few seconds for MIDI to initialize, or restart the");
textOut(114, 4 + (2 * 11), PAL_FORGRND, "tracker if you recently plugged in a MIDI device.");
return;
}
for (uint16_t i = 0; i < 15; i++)
{
const int32_t deviceEntry = getScrollBarPos(SB_MIDI_INPUT_SCROLL) + i;
if (deviceEntry < midi.numInputDevices)
{
if (midi.inputDeviceNames[deviceEntry] == NULL)
continue;
const uint16_t y = 4 + (i * 11);
if (midi.inputDeviceName != NULL)
{
if (_stricmp(midi.inputDeviceName, midi.inputDeviceNames[deviceEntry]) == 0)
fillRect(114, y, 365, 10, PAL_BOXSLCT); // selection background color
}
char *tmpString = utf8ToCp437(midi.inputDeviceNames[deviceEntry], true);
if (tmpString != NULL)
{
textOutClipX(114, y, PAL_FORGRND, tmpString, 479);
free(tmpString);
}
}
}
}
void scrollMidiInputDevListUp(void)
{
scrollBarScrollUp(SB_MIDI_INPUT_SCROLL, 1);
}
void scrollMidiInputDevListDown(void)
{
scrollBarScrollDown(SB_MIDI_INPUT_SCROLL, 1);
}
void sbMidiInputSetPos(uint32_t pos)
{
if (ui.configScreenShown && editor.currConfigScreen == CONFIG_SCREEN_MIDI_INPUT)
drawMidiInputList();
(void)pos;
}
bool testMidiInputDeviceListMouseDown(void)
{
if (!ui.configScreenShown || editor.currConfigScreen != CONFIG_SCREEN_MIDI_INPUT)
return false; // we didn't click the area
if (!midi.initThreadDone)
return true;
const int32_t mx = mouse.x;
const int32_t my = mouse.y;
if (my < 4 || my > 166 || mx < 114 || mx > 479)
return false; // we didn't click the area
const int32_t deviceNum = (int32_t)scrollBars[SB_MIDI_INPUT_SCROLL].pos + ((my - 4) / 11);
if (midi.numInputDevices <= 0 || deviceNum >= midi.numInputDevices)
return true;
if (midi.inputDeviceName != NULL)
{
if (!_stricmp(midi.inputDeviceName, midi.inputDeviceNames[deviceNum]))
return true; // we clicked the currently selected device, do nothing
free(midi.inputDeviceName);
}
midi.inputDeviceName = strdup(midi.inputDeviceNames[deviceNum]);
midi.inputDevice = deviceNum;
closeMidiInDevice();
freeMidiIn();
initMidiIn();
openMidiInDevice(midi.inputDevice);
drawMidiInputList();
return true;
}
int32_t SDLCALL initMidiFunc(void *ptr)
{
midi.closeMidiOnExit = true;
midi.initThreadDone = false;
initMidiIn();
setMidiInputDeviceFromConfig();
openMidiInDevice(midi.inputDevice);
midi.initThreadDone = true;
midi.rescanDevicesFlag = true;
return true;
(void)ptr;
}
#else
typedef int make_iso_compilers_happy; // kludge: prevent warning about empty .c file if HAS_MIDI is not defined
#endif