/*
 *   This file is part of MiniGUI, a mature cross-platform windowing
 *   and Graphics User Interface (GUI) support system for embedded systems
 *   and smart IoT devices.
 *
 *   Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
 *   Copyright (C) 1998~2002, WEI Yongming
 *
 *   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 3 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, see <http://www.gnu.org/licenses/>.
 *
 *   Or,
 *
 *   As this program is a library, any link to this program must follow
 *   GNU General Public License version 3 (GPLv3). If you cannot accept
 *   GPLv3, you need to be licensed from FMSoft.
 *
 *   If you have got a commercial license of this program, please use it
 *   under the terms and conditions of the commercial license.
 *
 *   For more information about the commercial license, please refer to
 *   <http://www.minigui.com/blog/minigui-licensing-policy/>.
 */

/*
 *      MiniGUI for Linux/uClinux, eCos, uC/OS-II, VxWorks,
 *      pSOS, ThreadX, NuCleus, OSE, and Win32.
 */

#include <minigui/common.h>

#ifdef __UCOSII__

/* --------------------- Interfaces for Common IAL Engine ----------------- */
#ifdef _COMM_IAL

/* Please implemente the following functions if your MiniGUI is
 * configured to use the comm IAL engine */

#define COMM_MOUSEINPUT    0x01  // mouse event
#define COMM_KBINPUT       0x02  // keyboard event

/*
 * Initialize the input device here.
 *
 * return zero on success, non-zero on error.
 */
int __comminput_init (void)
{
    /* TODO */
    return 0;
}

/*
 * Waits for input for keyboard and touchpanel.
 * If no data, this function should go into sleep;
 * when data is available, keyboard or touchpanel driver should wake up
 * the task/thread in MiniGUI who call __comminput_wait_for_input.
 *
 * Normal implementation makes this function sleep on a RTOS event object,
 * such as semaphore, and then returns COMM_MOUSEINPUT or COMM_KBINPUT
 * according to type of the input event.
 */
int __comminput_wait_for_input (void)
{
    /* TODO */
    return 0;
}

/*
 * Gets touchpanel position and button data.
 * x, y   : position values
 * button : Non-zero value means pen is down.
 */
int __comminput_ts_getdata (short *x, short *y, short *button)
{
    /* TODO */
    return 0;
}

/*
 * Gets keyboard key data.
 * key        : return MiniGUI scancode of the key.
 * key_status : key down or up, non-zero value means down.
 */
int __comminput_kb_getdata (short *key, short *key_status)
{
    /* TODO */
    return 0;
}

/*
 * De-initialize the input device here.
 * return: void.
 */
void  __comminput_deinit (void)
{
    /* TODO */
    return;
}

#endif /* _COMM_IAL */

/*------------- Interfaces for COMMON LCD NEWGAL engine  ------------------- */
#ifdef _MGGAL_COMMLCD

/* The pixel format defined by depth */
#define COMMLCD_PSEUDO_RGB332    1
#define COMMLCD_TRUE_RGB555      2

#define COMMLCD_TRUE_RGB565      3
#define COMMLCD_TRUE_RGB888      4
#define COMMLCD_TRUE_RGB0888     5

/* Please implemente the following functions if your MiniGUI is
 * configured to use the comm IAL engine */

struct commlcd_info {
    short height, width;  // Pixels
    short bpp;            // Depth (bits-per-pixel)
    short type;           // Pixel type
    short rlen;           // Length of one raster line in bytes
    void  *fb;            // Address of the frame buffer
};

int __commlcd_drv_init (void)
{
    /* TODO: Do LCD initialization here, if you have not. */
    return 0;
}

/* This should be a pointer to the real framebuffer of your LCD */
static char a_fb [320*240*2];

int __commlcd_drv_getinfo (struct commlcd_info *li)
{
    /* TODO:
     * Set LCD information in a commlcd_info structure pointed by li
     * according to properties of your LCD.
     */
    li->width  = 320;
    li->height = 240;
    li->bpp    = 16;
    li->type   = 0;
    li->rlen   = 320*2;
    li->fb     = a_fb;

    return 0;
}

int __commlcd_drv_release (void)
{
    /* TODO: release your LCD device */
    return 0;
}

int __commlcd_drv_setclut (int firstcolor, int ncolors, GAL_Color *colors)
{
    /* TODO: set hardware pallete if your LCD is 8-bpp. */
    return 0;
}

#endif /* _MGGAL_COMMLCD */

/* --------------------- I/O functions -------------------------- */
// for debug purpose

/* Gets a char from uart */
int drv_uart_get_byte (void)
{
    // TODO...
    return 'a';
}

/* Sends a char to uart */
int drv_uart_send_byte (int ch)
{
    // TODO...
    return 0;
}

/* --------------------- Heap management -------------------------- */
#ifdef __TARGET_S3C2410__

#include "2410addr.h"

#define HEAPEND  0x0FF00000

extern char Image$$RW$$Limit[];
static unsigned char* __ucos2_heap = Image$$RW$$Limit;
static unsigned int __ucos2_heap_size = HEAPEND - (unsigned int)__ucos2_heap;

#elif defined (__TARGET_S3C44B0X__)

#define HEAPEND  0x0c700000

extern unsigned int bottom_of_heap;     /* defined in heap.s */
static unsigned char* __ucos2_heap = (char*) bottom_of_heap;
static unsigned int __ucos2_heap_size = HEAPEND - bottom_of_heap;

#else

/* use a static array as the heap */

#define HEAPSIZE  (1024*1024*3)

static unsigned char __ucos2_heap [HEAPSIZE];
static unsigned int __ucos2_heap_size = HEAPSIZE;

#endif

#include "os_cpu.h"
#include "os_cfg.h"
#include "ucos_ii.h"

/*
 * The mutex priority of the malloc.
 * the priority of this mutex should be higher than 16, which
 * is the highest task priority of MiniGUI threads in uC/OS-II.
 */
#define UCOS2_MALLOC_MUTEX_PRIO     15

static OS_EVENT* __ucos2_malloc_mutex;

static int __ucos2_heap_lock (void)
{
    INT8U err;

    OSMutexPend (__ucos2_malloc_mutex, 0, &err);

    if (err == OS_NO_ERR)
        return 0;

    return -1;
}

static int __ucos2_heap_unlock (void)
{
    OSMutexPost (__ucos2_malloc_mutex);
    return 0;
}

/* ------------------- Application entry for uC/OS-II -------------- */

/* MiniGUI application entry defined in other module. */
extern int minigui_entry (int argc, const char* argv []);

/* the stack for main thread */
static char main_stack [MAIN_PTH_DEF_STACK_SIZE];

void minigui_app_entry (void)
{
    INT8U err;

    /* TODO: do some initialization here */

    /*
     * Initialize MiniGUI's own printf system firstly.
     */
    init_minigui_printf (drv_uart_send_byte, drv_uart_get_byte);

    /*
     * Initialize MiniGUI's heap memory management module secondly.
     */
    __ucos2_malloc_mutex = OSMutexCreate (UCOS2_MALLOC_MUTEX_PRIO, &err);
    if (err != OS_NO_ERR) {
        fprintf (stderr, "Can not init mutex object for heap.\n");
        return;
    }

    if (init_minigui_malloc (__ucos2_heap, __ucos2_heap_size,
            __ucos2_heap_lock, __ucos2_heap_unlock)) {
        fprintf (stderr, "Can not init MiniGUI heap system.\n");
        return;
    }

    /*
     * Initialize MiniGUI's POSIX thread module and call minigui_entry thirdly.
     */
    if (start_minigui_pthread (minigui_entry, 0, NULL,
            main_stack, MAIN_PTH_DEF_STACK_SIZE)) {
        fprintf (stderr, "Can not init MiniGUI's pthread implementation.\n");
        return;
    }

    /* TODO: Call uC/OS-II OSStart here */
}

#endif /* __UCOSII__ */