ps2_vusb/mousekey.c

   1 #include <stdint.h>
   2 #include <util/delay.h>
   3 #include "usb_keycodes.h"
   4 #include "host.h"
   5 #include "timer.h"
   6 #include "print.h"
   7 #include "mousekey.h"
   8
   9
  10 static report_mouse_t report;
  11 static report_mouse_t report_prev;
  12
  13 static uint8_t mousekey_repeat =  0;
  14
  15
  16 /*
  17  * TODO: fix acceleration algorithm
  18  * see wikipedia http://en.wikipedia.org/wiki/Mouse_keys
  19  */
  20 #ifndef MOUSEKEY_DELAY_TIME
  21 #   define MOUSEKEY_DELAY_TIME 255
  22 #endif
  23
  24
  25 static inline uint8_t move_unit(void)
  26 {
  27     uint8_t unit = (10 + (mousekey_repeat));
  28     return unit > 127 ? 127 : unit;
  29 }
  30
  31 void mousekey_decode(uint8_t code)
  32 {
  33     if      (code == KB_MS_UP)      report.y -= move_unit();
  34     else if (code == KB_MS_DOWN)    report.y += move_unit();
  35     else if (code == KB_MS_LEFT)    report.x -= move_unit();
  36     else if (code == KB_MS_RIGHT)   report.x += move_unit();
  37     else if (code == KB_MS_BTN1)    report.buttons |= MOUSE_BTN1;
  38     else if (code == KB_MS_BTN2)    report.buttons |= MOUSE_BTN2;
  39     else if (code == KB_MS_BTN3)    report.buttons |= MOUSE_BTN3;
  40 /*
  41     else if (code == KB_MS_BTN4)    report.buttons |= MOUSE_BTN4;
  42     else if (code == KB_MS_BTN5)    report.buttons |= MOUSE_BTN5;
  43     else if (code == KB_MS_WH_UP)   report.v += 1;
  44     else if (code == KB_MS_WH_DOWN) report.v -= 1;
  45     else if (code == KB_MS_WH_LEFT) report.h -= 1;
  46     else if (code == KB_MS_WH_RIGHT)report.h += 1;
  47 */
  48 }
  49
  50 bool mousekey_changed(void)
  51 {
  52     return (report.buttons != report_prev.buttons ||
  53             report.x != report_prev.x ||
  54             report.y != report_prev.y ||
  55             report.x || report.y);
  56     //return (report.buttons != report_prev.buttons || report.x || report.y);
  57 }
  58
  59 void mousekey_send(void)
  60 {
  61     static uint16_t last_timer = 0;
  62
  63     if (!mousekey_changed()) {
  64         mousekey_repeat = 0;
  65         return;
  66     }
  67
  68     // send immediately when buttun state is changed
  69     if (report.buttons == report_prev.buttons) {
  70         // TODO: delay parameter setting
  71         if ((timer_elapsed(last_timer) < (mousekey_repeat == 1 ? 20 : 5))) {
  72             return;
  73         }
  74     }
  75
  76     if (report.x && report.y) {
  77         report.x *= 0.7;
  78         report.y *= 0.7;
  79     }
  80
  81     /*
  82     print("mousekey_repeat: "); phex(mousekey_repeat); print("\n");
  83     print("timer: "); phex16(timer_read()); print("\n");
  84     print("last_timer: "); phex16(last_timer); print("\n");
  85     print("mousekey: "); phex(report.buttons); print(" "); phex(report.x); print(" "); phex(report.y); print("\n");
  86     */
  87
  88     host_mouse_send(&report);
  89     report_prev.buttons = report.buttons;
  90     report_prev.x = report.x;
  91     report_prev.y = report.y;
  92     if (mousekey_repeat != 0xFF) mousekey_repeat++;
  93     last_timer = timer_read();
  94     mousekey_clear_report();
  95 }
  96
  97 void mousekey_clear_report(void)
  98 {
  99     report.buttons = 0;
 100     report.x = 0;
 101     report.y = 0;
 102 }