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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdlib.h>
#include "osdep/timer.h"
#include "input/input.h"
#include "input/mouse.h"
#include "mp_fifo.h"
#include "talloc.h"
#include "options.h"
struct mp_fifo {
struct MPOpts *opts;
int *data;
int readpos;
int writepos;
int size;
unsigned last_key_time[2];
int last_key[2];
};
struct mp_fifo *mp_fifo_create(struct MPOpts *opts)
{
struct mp_fifo *fifo = talloc_zero(NULL, struct mp_fifo);
fifo->opts = opts;
fifo->size = opts->key_fifo_size;
fifo->data = talloc_array_ptrtype(fifo, fifo->data, fifo->size);
return fifo;
}
static void mplayer_put_key_internal(struct mp_fifo *fifo, int code)
{
int fifo_free = fifo->readpos - fifo->writepos - 1;
if (fifo_free < 0)
fifo_free += fifo->size;
if (!fifo_free)
return; // FIFO FULL!!
// reserve some space for key release events to avoid stuck keys
if((code & MP_KEY_DOWN) && fifo_free < (fifo->size >> 1))
return;
fifo->data[fifo->writepos++] = code;
fifo->writepos %= fifo->size;
}
int mplayer_get_key(void *ctx, int fd)
{
struct mp_fifo *fifo = ctx;
if (fifo->writepos == fifo->readpos)
return MP_INPUT_NOTHING;
int key = fifo->data[fifo->readpos++];
fifo->readpos %= fifo->size;
return key;
}
static void put_double(struct mp_fifo *fifo, int code)
{
if (code >= MOUSE_BTN0 && code <= MOUSE_BTN9)
mplayer_put_key_internal(fifo, code - MOUSE_BTN0 + MOUSE_BTN0_DBL);
}
void mplayer_put_key(struct mp_fifo *fifo, int code)
{
unsigned now = GetTimerMS();
int doubleclick_time = fifo->opts->doubleclick_time;
// 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(fifo, code);
if (code & MP_KEY_DOWN) {
code &= ~MP_KEY_DOWN;
fifo->last_key[1] = fifo->last_key[0];
fifo->last_key[0] = code;
fifo->last_key_time[1] = fifo->last_key_time[0];
fifo->last_key_time[0] = now;
if (fifo->last_key[1] == code
&& now - fifo->last_key_time[1] < doubleclick_time)
put_double(fifo, code);
return;
}
if (fifo->last_key[0] == code && fifo->last_key[1] == code
&& now - fifo->last_key_time[1] < doubleclick_time)
put_double(fifo, code);
}
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