alsa-tools/us428control/usbus428ctldefs.h

/* -*- mode:C++; indent-tabs-mode:t; tab-width:8; c-basic-offset: 8 -*- */
/*
 *
 * Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
 *
 *   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
 */

#ifdef __cplusplus
#include <string.h>
extern int verbose;
#endif

enum E_In84 {
	eFader0 = 0,
	eFader1,
	eFader2,
	eFader3,
	eFader4,
	eFader5,
	eFader6,
	eFader7,
	eFaderM,
	eTransport,
	eModifier = 10,
	eFilterSelect,
	eSelect,
	eMute,

	eSwitch   = 15,
	eWheelGain,
	eWheelFreq,
	eWheelQ,
	eWheelPan,
	eWheel    = 20
};

#define T_RECORD   1
#define T_PLAY     2
#define T_STOP     4
#define T_F_FWD    8
#define T_REW   0x10
#define T_SOLO  0x20
#define T_REC   0x40
#define T_NULL  0x80


struct us428_ctls{
	unsigned char   Fader[9];
	unsigned char 	Transport;
	unsigned char 	Modifier;
	unsigned char 	FilterSelect;
	unsigned char 	Select;
	unsigned char   Mute;
	unsigned char   UNKNOWN;
	unsigned char   Switch;
	unsigned char   Wheel[5];
};

typedef struct us428_ctls us428_ctls_t;

typedef struct us428_setByte{
	unsigned char Offset,
		Value;
}us428_setByte_t;

enum {
	eLT_Volume = 0,
	eLT_Light
};

typedef struct usX2Y_volume {
	unsigned char	Channel,
		LH,
		LL,
		RH,
		RL;
	unsigned char	Slider;
	char		Pan,
		Mute;
#ifdef __cplusplus
public:
	void init(unsigned char _Channel) {
		memset(this, 0, sizeof(*this));
		Channel = _Channel;
	}
	int Scale(){return 0x40;}

	void calculate() {
		int lPan = (int)Pan * Slider / 0x80;
		int ValL = (Slider - lPan) * Scale();
		LH = ValL >> 8;
		LL = ValL;
		int ValR = (Slider + lPan) * Scale();
		RH = ValR >> 8;
		RL = ValR;
		if (2 < verbose)
			printf("S=% 3i, P=% 3i, lP=% 3i, VL=%05i, VR=%05i\n", (int)Slider, (int)Pan, (int)lPan, ValL, ValR);
	}

	void SetTo(unsigned char _Channel, int RawValue){
		Slider = RawValue;
		Channel = eFaderM == _Channel ? 4 : _Channel;
		calculate();
	}
	void PanTo(int RawValue, bool Grob) {
		int NewPan;
		if (Grob) {
			static int GrobVals[] = {-128, -64, 0, 64, 127};
			int i = 4;
			while (i >= 0 && GrobVals[i] > Pan)
				i--;
			if (GrobVals[i] != Pan  &&  RawValue < 0)
				i++;

			if (i >= 0) {
				if ((i += RawValue) >= 0  &&  i < 5)
					NewPan = GrobVals[i];
				else
					return;
			}

		} else {
			NewPan = Pan + RawValue;
		}
		if (NewPan < -128  ||  NewPan > 127)
			return;
		Pan = NewPan;
		calculate();
	}
#endif
} usX2Y_volume_t;

struct us428_lights{
	us428_setByte_t Light[7];
#ifdef __cplusplus
public:
	enum eLight{
		eL_Select0 = 0,
		eL_Rec0 = 8,
		eL_Mute0 = 16,
		eL_Solo = 24,
		eL_InputMonitor = 25,
		eL_BankL = 26,
		eL_BankR = 27,
		eL_Rew = 28,
		eL_FFwd = 29,
		eL_Play = 30,
		eL_Record = 31,
		eL_AnalogDigital = 32,
		eL_Null = 34,
		eL_Low = 36,
		eL_LowMid = 37,
		eL_HiMid = 38,
		eL_High = 39
	};
	bool LightIs(int L){
		return Light[L / 8].Value & (1 << (L % 8));
	}
	void LightSet(int L, bool Value){
		if (Value)
			Light[L / 8].Value |= (1 << (L % 8));
		else
			Light[L / 8].Value &= ~(1 << (L % 8));
	}
	void init_us428_lights();
#endif
};
typedef struct us428_lights us428_lights_t;

typedef struct {
	char type;
	union {
		usX2Y_volume_t	vol;
		us428_lights_t  lights;
	};
} us428_p4out_t;

#define N_us428_ctl_BUFS 16
#define N_us428_p4out_BUFS 16
struct us428ctls_sharedmem{
	us428_ctls_t	CtlSnapShot[N_us428_ctl_BUFS];
	int		CtlSnapShotDiffersAt[N_us428_ctl_BUFS];
	int		CtlSnapShotLast, CtlSnapShotRed;
	us428_p4out_t	p4out[N_us428_p4out_BUFS];
	int		p4outLast, p4outSent;
};
typedef struct us428ctls_sharedmem us428ctls_sharedmem_t;