fifo.c

   1 #include "input/mouse.h"
   2
   3 #if 0
   4
   5 // keyboard:
   6 static int keyb_fifo_put=-1;
   7 static int keyb_fifo_get=-1;
   8
   9 static void set_nonblock_flag(int fd) {
  10   int oldflags;
  11
  12   oldflags = fcntl(fd, F_GETFL, 0);
  13   if (oldflags != -1) {
  14     if (fcntl(keyb_fifo_put, F_SETFL, oldflags | O_NONBLOCK) != -1) {
  15        return;
  16     }
  17   }
  18   mp_msg(MSGT_INPUT,MSGL_ERR,"Cannot set nonblocking mode for fd %d!\n", fd);
  19 }
  20
  21 static void make_pipe(int* pr,int* pw){
  22   int temp[2];
  23   if(pipe(temp)!=0) mp_msg(MSGT_FIXME, MSGL_FIXME, MSGTR_CannotMakePipe);
  24   *pr=temp[0];
  25   *pw=temp[1];
  26   set_nonblock_flag(temp[1]);
  27 }
  28
  29 static void mplayer_put_key_internal(int code){
  30
  31     if( write(keyb_fifo_put,&code,4) != 4 ){
  32         mp_msg(MSGT_INPUT,MSGL_ERR,"*** key event dropped (FIFO is full) ***\n");
  33     }
  34 }
  35
  36 #else
  37
  38 int key_fifo_size = 7;
  39 static int *key_fifo_data = NULL;
  40 static int key_fifo_read=0;
  41 static int key_fifo_write=0;
  42
  43 static void mplayer_put_key_internal(int code){
  44   int fifo_free = key_fifo_read - key_fifo_write - 1;
  45   if (fifo_free < 0) fifo_free += key_fifo_size;
  46 //  printf("mplayer_put_key(%d)\n",code);
  47   if (key_fifo_data == NULL)
  48     key_fifo_data = malloc(key_fifo_size * sizeof(int));
  49   if(!fifo_free) return; // FIFO FULL!!
  50   // reserve some space for key release events to avoid stuck keys
  51   if((code & MP_KEY_DOWN) && fifo_free < (key_fifo_size >> 1))
  52     return;
  53   key_fifo_data[key_fifo_write]=code;
  54   key_fifo_write=(key_fifo_write+1)%key_fifo_size;
  55 }
  56
  57 int mplayer_get_key(int fd){
  58   int key;
  59 //  printf("mplayer_get_key(%d)\n",fd);
  60   if (key_fifo_data == NULL)
  61     return MP_INPUT_NOTHING;
  62   if(key_fifo_write==key_fifo_read) return MP_INPUT_NOTHING;
  63   key=key_fifo_data[key_fifo_read];
  64   key_fifo_read=(key_fifo_read+1)%key_fifo_size;
  65 //  printf("mplayer_get_key => %d\n",key);
  66   return key;
  67 }
  68
  69 #endif
  70
  71 static unsigned doubleclick_time = 300;
  72
  73 static void put_double(int code) {
  74   if (code >= MOUSE_BTN0 && code <= MOUSE_BTN9)
  75     mplayer_put_key_internal(code - MOUSE_BTN0 + MOUSE_BTN0_DBL);
  76 }
  77
  78 void mplayer_put_key(int code) {
  79   static unsigned last_key_time[2];
  80   static int last_key[2];
  81   unsigned now = GetTimerMS();
  82   // ignore system-doubleclick if we generate these events ourselves
  83   if (doubleclick_time &&
  84       (code & ~MP_KEY_DOWN) >= MOUSE_BTN0_DBL &&
  85       (code & ~MP_KEY_DOWN) <= MOUSE_BTN9_DBL)
  86     return;
  87   mplayer_put_key_internal(code);
  88   if (code & MP_KEY_DOWN) {
  89     code &= ~MP_KEY_DOWN;
  90     last_key[1] = last_key[0];
  91     last_key[0] = code;
  92     last_key_time[1] = last_key_time[0];
  93     last_key_time[0] = now;
  94     if (last_key[1] == code &&
  95         now - last_key_time[1] < doubleclick_time)
  96       put_double(code);
  97     return;
  98   }
  99   if (last_key[0] == code && last_key[1] == code &&
 100       now - last_key_time[1] < doubleclick_time)
 101     put_double(code);
 102 }