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mpv/fifo.c
reimar 0944709a29 Reserve half of fifo for key release events to help avoiding stop buttons
and remove thus useless hack for mouse wheel.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22149 b3059339-0415-0410-9bf9-f77b7e298cf2
2007-02-05 17:51:26 +00:00

103 lines
2.7 KiB
C

#include "input/mouse.h"
#if 0
// keyboard:
static int keyb_fifo_put=-1;
static int keyb_fifo_get=-1;
static void set_nonblock_flag(int fd) {
int oldflags;
oldflags = fcntl(fd, F_GETFL, 0);
if (oldflags != -1) {
if (fcntl(keyb_fifo_put, F_SETFL, oldflags | O_NONBLOCK) != -1) {
return;
}
}
mp_msg(MSGT_INPUT,MSGL_ERR,"Cannot set nonblocking mode for fd %d!\n", fd);
}
static void make_pipe(int* pr,int* pw){
int temp[2];
if(pipe(temp)!=0) mp_msg(MSGT_FIXME, MSGL_FIXME, MSGTR_CannotMakePipe);
*pr=temp[0];
*pw=temp[1];
set_nonblock_flag(temp[1]);
}
static void mplayer_put_key_internal(int code){
if( write(keyb_fifo_put,&code,4) != 4 ){
mp_msg(MSGT_INPUT,MSGL_ERR,"*** key event dropped (FIFO is full) ***\n");
}
}
#else
int key_fifo_size = 7;
static int *key_fifo_data = NULL;
static int key_fifo_read=0;
static int key_fifo_write=0;
static void mplayer_put_key_internal(int code){
int fifo_free = key_fifo_read - key_fifo_write - 1;
if (fifo_free < 0) fifo_free += key_fifo_size;
// printf("mplayer_put_key(%d)\n",code);
if (key_fifo_data == NULL)
key_fifo_data = malloc(key_fifo_size * sizeof(int));
if(!fifo_free) return; // FIFO FULL!!
// reserve some space for key release events to avoid stuck keys
if((code & MP_KEY_DOWN) && fifo_free < (key_fifo_size >> 1))
return;
key_fifo_data[key_fifo_write]=code;
key_fifo_write=(key_fifo_write+1)%key_fifo_size;
}
int mplayer_get_key(int fd){
int key;
// printf("mplayer_get_key(%d)\n",fd);
if (key_fifo_data == NULL)
return MP_INPUT_NOTHING;
if(key_fifo_write==key_fifo_read) return MP_INPUT_NOTHING;
key=key_fifo_data[key_fifo_read];
key_fifo_read=(key_fifo_read+1)%key_fifo_size;
// printf("mplayer_get_key => %d\n",key);
return key;
}
#endif
static unsigned doubleclick_time = 300;
static void put_double(int code) {
if (code >= MOUSE_BTN0 && code <= MOUSE_BTN9)
mplayer_put_key_internal(code - MOUSE_BTN0 + MOUSE_BTN0_DBL);
}
void mplayer_put_key(int code) {
static unsigned last_key_time[2];
static int last_key[2];
unsigned now = GetTimerMS();
// ignore system-doubleclick if we generate these events ourselves
if (doubleclick_time &&
(code & ~MP_KEY_DOWN) >= MOUSE_BTN0_DBL &&
(code & ~MP_KEY_DOWN) <= MOUSE_BTN9_DBL)
return;
mplayer_put_key_internal(code);
if (code & MP_KEY_DOWN) {
code &= ~MP_KEY_DOWN;
last_key[1] = last_key[0];
last_key[0] = code;
last_key_time[1] = last_key_time[0];
last_key_time[0] = now;
if (last_key[1] == code &&
now - last_key_time[1] < doubleclick_time)
put_double(code);
return;
}
if (last_key[0] == code && last_key[1] == code &&
now - last_key_time[1] < doubleclick_time)
put_double(code);
}