mp_fifo.c

   1 #include <stdlib.h>
   2 #include "osdep/timer.h"
   3 #include "input/input.h"
   4 #include "input/mouse.h"
   5
   6
   7 int key_fifo_size = 7;
   8 static int *key_fifo_data = NULL;
   9 static int key_fifo_read=0;
  10 static int key_fifo_write=0;
  11
  12 static void mplayer_put_key_internal(int code){
  13   int fifo_free = key_fifo_read - key_fifo_write - 1;
  14   if (fifo_free < 0) fifo_free += key_fifo_size;
  15 //  printf("mplayer_put_key(%d)\n",code);
  16   if (key_fifo_data == NULL)
  17     key_fifo_data = malloc(key_fifo_size * sizeof(int));
  18   if(!fifo_free) return; // FIFO FULL!!
  19   // reserve some space for key release events to avoid stuck keys
  20   if((code & MP_KEY_DOWN) && fifo_free < (key_fifo_size >> 1))
  21     return;
  22   key_fifo_data[key_fifo_write]=code;
  23   key_fifo_write=(key_fifo_write+1)%key_fifo_size;
  24 }
  25
  26 int mplayer_get_key(int fd){
  27   int key;
  28 //  printf("mplayer_get_key(%d)\n",fd);
  29   if (key_fifo_data == NULL)
  30     return MP_INPUT_NOTHING;
  31   if(key_fifo_write==key_fifo_read) return MP_INPUT_NOTHING;
  32   key=key_fifo_data[key_fifo_read];
  33   key_fifo_read=(key_fifo_read+1)%key_fifo_size;
  34 //  printf("mplayer_get_key => %d\n",key);
  35   return key;
  36 }
  37
  38
  39 unsigned doubleclick_time = 300;
  40
  41 static void put_double(int code) {
  42   if (code >= MOUSE_BTN0 && code <= MOUSE_BTN9)
  43     mplayer_put_key_internal(code - MOUSE_BTN0 + MOUSE_BTN0_DBL);
  44 }
  45
  46 void mplayer_put_key(int code) {
  47   static unsigned last_key_time[2];
  48   static int last_key[2];
  49   unsigned now = GetTimerMS();
  50   // ignore system-doubleclick if we generate these events ourselves
  51   if (doubleclick_time &&
  52       (code & ~MP_KEY_DOWN) >= MOUSE_BTN0_DBL &&
  53       (code & ~MP_KEY_DOWN) <= MOUSE_BTN9_DBL)
  54     return;
  55   mplayer_put_key_internal(code);
  56   if (code & MP_KEY_DOWN) {
  57     code &= ~MP_KEY_DOWN;
  58     last_key[1] = last_key[0];
  59     last_key[0] = code;
  60     last_key_time[1] = last_key_time[0];
  61     last_key_time[0] = now;
  62     if (last_key[1] == code &&
  63         now - last_key_time[1] < doubleclick_time)
  64       put_double(code);
  65     return;
  66   }
  67   if (last_key[0] == code && last_key[1] == code &&
  68       now - last_key_time[1] < doubleclick_time)
  69     put_double(code);
  70 }