/****************************************************************************
 * Copyright (C) 2015
 * by Dimok
 *
 * This software is provided 'as-is', without any express or implied
 * warranty. In no event will the authors be held liable for any
 * damages arising from the use of this software.
 *
 * Permission is granted to anyone to use this software for any
 * purpose, including commercial applications, and to alter it and
 * redistribute it freely, subject to the following restrictions:
 *
 * 1. The origin of this software must not be misrepresented; you
 * must not claim that you wrote the original software. If you use
 * this software in a product, an acknowledgment in the product
 * documentation would be appreciated but is not required.
 *
 * 2. Altered source versions must be plainly marked as such, and
 * must not be misrepresented as being the original software.
 *
 * 3. This notice may not be removed or altered from any source
 * distribution.
 ***************************************************************************/
#ifndef __VPAD_FUNCTIONS_H_
#define __VPAD_FUNCTIONS_H_

#ifdef __cplusplus
extern "C" {
#endif

#include <gctypes.h>

#define VPAD_BUTTON_A        0x8000
#define VPAD_BUTTON_B        0x4000
#define VPAD_BUTTON_X        0x2000
#define VPAD_BUTTON_Y        0x1000
#define VPAD_BUTTON_LEFT     0x0800
#define VPAD_BUTTON_RIGHT    0x0400
#define VPAD_BUTTON_UP       0x0200
#define VPAD_BUTTON_DOWN     0x0100
#define VPAD_BUTTON_ZL       0x0080
#define VPAD_BUTTON_ZR       0x0040
#define VPAD_BUTTON_L        0x0020
#define VPAD_BUTTON_R        0x0010
#define VPAD_BUTTON_PLUS     0x0008
#define VPAD_BUTTON_MINUS    0x0004
#define VPAD_BUTTON_HOME     0x0002
#define VPAD_BUTTON_SYNC     0x0001
#define VPAD_BUTTON_STICK_R  0x00020000
#define VPAD_BUTTON_STICK_L  0x00040000
#define VPAD_BUTTON_TV       0x00010000

#define VPAD_STICK_R_EMULATION_LEFT    0x04000000
#define VPAD_STICK_R_EMULATION_RIGHT   0x02000000
#define VPAD_STICK_R_EMULATION_UP      0x01000000
#define VPAD_STICK_R_EMULATION_DOWN    0x00800000

#define VPAD_STICK_L_EMULATION_LEFT    0x40000000
#define VPAD_STICK_L_EMULATION_RIGHT   0x20000000
#define VPAD_STICK_L_EMULATION_UP      0x10000000
#define VPAD_STICK_L_EMULATION_DOWN    0x08000000


typedef struct
{
    f32 x,y;
} Vec2D;

typedef struct
{
    u16 x, y;               /* Touch coordinates */
    u16 touched;            /* 1 = Touched, 0 = Not touched */
    u16 invalid;            /* 0 = All valid, 1 = X invalid, 2 = Y invalid, 3 = Both invalid? */
} VPADTPData;

typedef struct
{
    u32 btns_h;                  /* Held buttons */
    u32 btns_d;                  /* Buttons that are pressed at that instant */
    u32 btns_r;                  /* Released buttons */
    Vec2D lstick, rstick;        /* Each contains 4-byte X and Y components */
    char unknown1c[0x52 - 0x1c]; /* Contains accelerometer and gyroscope data somewhere */
    VPADTPData tpdata;           /* Normal touchscreen data */
    VPADTPData tpdata1;          /* Modified touchscreen data 1 */
    VPADTPData tpdata2;          /* Modified touchscreen data 2 */
    char unknown6a[0xa0 - 0x6a];
    uint8_t volume;
    uint8_t battery;             /* 0 to 6 */
    uint8_t unk_volume;          /* One less than volume */
    char unknowna4[0xac - 0xa4];
} VPADData;

void InitVPadFunctionPointers(void);

extern void (* VPADInit)(void);
extern void (* VPADRead)(int chan, VPADData *buffer, u32 buffer_size, s32 *error);

#ifdef __cplusplus
}
#endif

#endif // __VPAD_FUNCTIONS_H_