source: trunk/platform/a495/kbd.c @ 1605

#include "lolevel.h"
#include "platform.h"
#include "core.h"
#include "conf.h"
#include "keyboard.h"

typedef struct {
    short grp;
    short hackkey;
    long canonkey;
} KeyMap;


static long kbd_new_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
static long kbd_prev_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };
static long kbd_mod_state[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF };

static long last_kbd_key = 0;

extern void _platformsub_kbd_fetch_data(long*);

#define KEYS_MASK0 (0x00020000)
#define KEYS_MASK1 (0x00000000)
#define KEYS_MASK2 (0x017001f4)
#define KEYS_INV2 (0x01700000)
/*
the 4 button states residing in the upper half of physw_status[2] seem to be inverted
to handle these correctly, their value needs to be inverted:
- when reading from physw_status[2] to the state variables
- when writing to physw_status[2] from the state variables
KEYS_INV2 should be used for that
SD_READONLY_FLAG and USB_MASK are not affected by this

when idle, physw_status[2] looks like: "000001000000000xxxxx000111110100"
                         KEYS_MASK2 is "00000001011100000000000111110100"
*/

#define SD_READONLY_FLAG (0x40000)
#define USB_MASK (0x80000)
#define USB_IDX 2

extern void usb_remote_key( int ) ;
int get_usb_bit() 
{
        long usb_physw[3];
        usb_physw[USB_IDX] = 0;
        _kbd_read_keys_r2(usb_physw);
        return(( usb_physw[USB_IDX] & USB_MASK)==USB_MASK) ; 
}

static KeyMap keymap[] = {
    /* tiny bug: key order matters. see kbd_get_pressed_key()
    * for example
    */

    //{ 0, KEY_DISPLAY  , 0x00020000 }, // Playback
    { 0, KEY_PRINT      , 0x00020000 }, // Playback

    { 2, KEY_SHOOT_FULL , 0x00000030 }, // 0x00000010 (KEY_SHOOT_HALF) + 0x00000020 (KEY_SHOOT_FULL_ONLY)
    { 2, KEY_SHOOT_FULL_ONLY, 0x00000020 },
    { 2, KEY_SHOOT_HALF , 0x00000010 },
    
    { 2, KEY_UP         , 0x00100000 },
    { 2, KEY_DOWN       , 0x00200000 },
    { 2, KEY_LEFT       , 0x00400000 },
    { 2, KEY_RIGHT      , 0x00000004 },
    { 2, KEY_SET        , 0x00000100 },
    { 2, KEY_ZOOM_IN    , 0x00000080 },
    { 2, KEY_ZOOM_OUT   , 0x00000040 },
    { 2, KEY_MENU       , 0x01000000 },
    { 0, 0, 0 }
};


long __attribute__((naked)) wrap_kbd_p1_f() ;


static void __attribute__((noinline)) mykbd_task_proceed()
{
        /* Initialize our own kbd_new_state[] array with the
           current physical status. (inspired by the S90 port)
           */
        kbd_new_state[0] = physw_status[0];
        kbd_new_state[1] = physw_status[1];
        kbd_new_state[2] = physw_status[2] ^ KEYS_INV2;
        while (physw_run){
                _SleepTask(10);
                
                if (wrap_kbd_p1_f() == 1){ // autorepeat ?
                        _kbd_p2_f();
                }
        }
}

void __attribute__((naked,noinline)) mykbd_task()
{
        mykbd_task_proceed();
        _ExitTask();
}


long __attribute__((naked,noinline)) wrap_kbd_p1_f()
{
        asm volatile(
                        "STMFD   SP!, {R1-R5,LR}\n"
                        "MOV     R4, #0\n"
                        //"BL      _kbd_read_keys\n"       // replaces kbd_fetch_data()
                        "BL      my_kbd_read_keys\n"     // +
                        "B       _kbd_p1_f_cont\n"       // continue
        );
        
        return 0; // shut up the compiler
}


void my_kbd_read_keys()
{
        // If script are running, replace PRINT button with DISPLAY
        if (state_kbd_script_run) {
                int i;
                for (i=0; keymap[i].hackkey; i++) {
                        if (keymap[i].hackkey == KEY_PRINT) {
                                keymap[i].hackkey = KEY_DISPLAY;
                                break;
                        }
                }
        } else {
                int i;
                for (i=0; keymap[i].hackkey; i++) {
                        if (keymap[i].hackkey == KEY_DISPLAY) {
                                keymap[i].hackkey = KEY_PRINT;
                                break;
                        }
                }
        }
        
        kbd_prev_state[0] = kbd_new_state[0];
        //kbd_prev_state[1] = kbd_new_state[1];
        kbd_prev_state[2] = kbd_new_state[2];
        
        asm volatile(
        "BL      _kbd_read_keys\n"
        );
        
        //_platformsub_kbd_fetch_data(kbd_new_state);
        kbd_new_state[0] = physw_status[0];
        kbd_new_state[1] = physw_status[1];
        kbd_new_state[2] = physw_status[2] ^ KEYS_INV2;
        
        if (kbd_process() == 0){
                // leave it alone...
        } else {
        // override keys
        physw_status[0] = (kbd_new_state[0] | KEYS_MASK0) & (~KEYS_MASK0 | kbd_mod_state[0]);
        //physw_status[1] = (kbd_new_state[1] | KEYS_MASK1) & (~KEYS_MASK1 | kbd_mod_state[1]);
        physw_status[2] = ((kbd_new_state[2] | KEYS_MASK2) & (~KEYS_MASK2 | kbd_mod_state[2])) ^ KEYS_INV2;
        }
        
        //_kbd_read_keys_r2(physw_status);

        usb_remote_key(physw_status[USB_IDX]) ;
        
        if (conf.remote_enable) {
                physw_status[USB_IDX] = physw_status[USB_IDX] & ~(SD_READONLY_FLAG | USB_MASK);
        } else {
                physw_status[USB_IDX] = physw_status[USB_IDX] & ~SD_READONLY_FLAG;
        }
}




/****************/

void kbd_key_press(long key)
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (keymap[i].hackkey == key){
                        kbd_mod_state[keymap[i].grp] &= ~keymap[i].canonkey;
                        return;
                }
        }
}

void kbd_key_release(long key)
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (keymap[i].hackkey == key){
                        kbd_mod_state[keymap[i].grp] |= keymap[i].canonkey;
                        return;
                }
        }
}

void kbd_key_release_all()
{
        kbd_mod_state[0] |= KEYS_MASK0;
        kbd_mod_state[1] |= KEYS_MASK1;
        kbd_mod_state[2] |= KEYS_MASK2;
}

long kbd_is_key_pressed(long key)
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (keymap[i].hackkey == key){
                        return ((kbd_new_state[keymap[i].grp] & keymap[i].canonkey) == 0) ? 1:0;
                }
        }
        return 0;
}

long kbd_is_key_clicked(long key)
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (keymap[i].hackkey == key){
                        return ((kbd_prev_state[keymap[i].grp] & keymap[i].canonkey) != 0) &&
                                   ((kbd_new_state[keymap[i].grp] & keymap[i].canonkey) == 0);
                }
        }
        return 0;
}

long kbd_get_pressed_key()
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (kbd_is_key_pressed(keymap[i].hackkey)) {
                        return keymap[i].hackkey;
                }
        }
        return 0;
}

long kbd_get_clicked_key()
{
        int i;
        for (i=0;keymap[i].hackkey;i++){
                if (((kbd_prev_state[keymap[i].grp] & keymap[i].canonkey) != 0) &&
                        ((kbd_new_state[keymap[i].grp] & keymap[i].canonkey) == 0)) {
                        return keymap[i].hackkey;
                }
        }
        return 0;
}


void kbd_reset_autoclicked_key() {
        last_kbd_key = 0;
}

long kbd_get_autoclicked_key() {
        static long last_kbd_time = 0, press_count = 0;
        register long key, t;
        
        key=kbd_get_clicked_key();
        if (key) {
                last_kbd_key = key;
                press_count = 0;
                last_kbd_time = get_tick_count();
                return key;
        } else {
                if (last_kbd_key && kbd_is_key_pressed(last_kbd_key)) {
                        t = get_tick_count();
                        if (t-last_kbd_time>((press_count)?175:500)) {
                                ++press_count;
                                last_kbd_time = t;
                                return last_kbd_key;
                        } else {
                                return 0;
                        }
                } else {
                        last_kbd_key = 0;
                        return 0;
                }
        }
}


long kbd_use_zoom_as_mf() {
        return 0;
}