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/*
SuperCollider real time audio synthesis system
Copyright (c) 2002 James McCartney. All rights reserved.
http://www.audiosynth.com
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
*/
#if SC_DARWIN
#include <Carbon/Carbon.h>
#include <unistd.h>
#else
# ifndef SC_WIN32
# include <time.h>
# include <X11/Intrinsic.h>
# else
# endif
#endif
#include "SC_PlugIn.h"
static InterfaceTable *ft;
struct KeyboardUGenGlobalState {
#if SC_DARWIN
// uint8 keys[16];
KeyMap keys;
#else
uint8 keys[32];
#endif
} gKeyStateGlobals;
struct KeyState : public Unit
{
KeyboardUGenGlobalState* gstate;
float m_y1, m_b1, m_lag;
};
//////////////////////////////////////////////////////////////////////////////////////////////////
extern "C"
{
void load(InterfaceTable *inTable);
void KeyState_next(KeyState *unit, int inNumSamples);
void KeyState_Ctor(KeyState *unit);
};
//////////////////////////////////////////////////////////////////////////////////////////////////
#if SC_DARWIN
void* gstate_update_func(void* arg)
{
KeyboardUGenGlobalState* gstate = &gKeyStateGlobals;
for (;;) {
Point p;
GetKeys(gstate->keys);
usleep(17000);
}
return 0;
}
#elif defined(SC_WIN32)
void* gstate_update_func(void* arg)
{
POINT p;
int mButton;
KeyboardUGenGlobalState* gstate;
gstate = &gKeyStateGlobals;
/* // "KeyState" is disabled for now, on Windows...
for(;;) {
//GetKey((long*)gstate->keys);
::Sleep(17); // 17msec.
}
*/
return 0;
}
# else
static Display * d = 0;
void* gstate_update_func(void* arg)
{
KeyboardUGenGlobalState* gstate;
Window r;
struct timespec requested_time , remaining_time;
requested_time.tv_sec = 0;
requested_time.tv_nsec = 17000 * 1000;
d = XOpenDisplay ( NULL );
if (!d) return 0;
gstate = &gKeyStateGlobals;
for (;;) {
XQueryKeymap ( d , (char *) (gstate->keys) );
nanosleep ( &requested_time , &remaining_time );
}
return 0;
}
#endif
//////////////////////////////////////////////////////////////////////////////////////////////////
void KeyState_next(KeyState *unit, int inNumSamples)
{
// minval, maxval, warp, lag
uint8 *keys = (uint8*)unit->gstate->keys;
int keynum = (int)ZIN0(0);
#if SC_DARWIN
int byte = (keynum >> 3) & 15;
#else
int byte = (keynum >> 3) & 31;
#endif
int bit = keynum & 7;
int val = keys[byte] & (1 << bit);
float minval = ZIN0(1);
float maxval = ZIN0(2);
float lag = ZIN0(3);
float y1 = unit->m_y1;
float b1 = unit->m_b1;
if (lag != unit->m_lag) {
unit->m_b1 = lag == 0.f ? 0.f : exp(log001 / (lag * unit->mRate->mSampleRate));
unit->m_lag = lag;
}
float y0 = val ? maxval : minval;
ZOUT0(0) = y1 = y0 + b1 * (y1 - y0);
unit->m_y1 = zapgremlins(y1);
}
void KeyState_Ctor(KeyState *unit)
{
SETCALC(KeyState_next);
unit->gstate = &gKeyStateGlobals;
unit->m_b1 = 0.f;
unit->m_lag = 0.f;
KeyState_next(unit, 1);
}
void load(InterfaceTable *inTable)
{
ft = inTable;
pthread_t keybListenThread;
pthread_create (&keybListenThread, NULL, gstate_update_func, (void*)0);
DefineSimpleUnit(KeyState);
}
#ifdef __GNUC__
#if !defined(SC_DARWIN) && !defined(SC_WIN32)
static void __attribute__ ((destructor)) finalize(void)
{
if (d)
XCloseDisplay(d);
}
#endif
#endif
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