From 8d5214de0abc768242aacf8bc217e1726cb6a661 Mon Sep 17 00:00:00 2001 From: wm4 Date: Tue, 17 Dec 2013 01:23:09 +0100 Subject: Move mpvcore/input/ to input/ --- input/joystick.c | 162 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 input/joystick.c (limited to 'input/joystick.c') diff --git a/input/joystick.c b/input/joystick.c new file mode 100644 index 0000000000..d8e9d13423 --- /dev/null +++ b/input/joystick.c @@ -0,0 +1,162 @@ +/* + * 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 "config.h" + +#include "joystick.h" +#include "input.h" + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "mpvcore/mp_msg.h" +#include "keycodes.h" + +#ifndef JOY_AXIS_DELTA +#define JOY_AXIS_DELTA 500 +#endif + +#ifndef JS_DEV +#define JS_DEV "/dev/input/js0" +#endif + +#include + +int axis[256]; +int btns = 0; + +int mp_input_joystick_init(char* dev) { + int fd,l=0; + int initialized = 0; + struct js_event ev; + + mp_msg(MSGT_INPUT,MSGL_V,"Opening joystick device %s\n",dev ? dev : JS_DEV); + + fd = open( dev ? dev : JS_DEV , O_RDONLY | O_NONBLOCK ); + if(fd < 0) { + mp_msg(MSGT_INPUT,MSGL_ERR,"Can't open joystick device %s: %s\n",dev ? dev : JS_DEV,strerror(errno)); + return -1; + } + + while(! initialized) { + l = 0; + while((unsigned int)l < sizeof(struct js_event)) { + int r = read(fd,((char*)&ev)+l,sizeof(struct js_event)-l); + if(r < 0) { + if(errno == EINTR) + continue; + else if(errno == EAGAIN) { + initialized = 1; + break; + } + mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n",strerror(errno)); + close(fd); + return -1; + } + l += r; + } + if((unsigned int)l < sizeof(struct js_event)) { + if(l > 0) + mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: We lose %d bytes of data\n",l); + break; + } + if(ev.type == JS_EVENT_BUTTON) + btns |= (ev.value << ev.number); + if(ev.type == JS_EVENT_AXIS) + axis[ev.number] = ev.value; + } + + return fd; +} + +int mp_input_joystick_read(void *ctx, int fd) { + struct js_event ev; + int l=0; + + while((unsigned int)l < sizeof(struct js_event)) { + int r = read(fd,&ev+l,sizeof(struct js_event)-l); + if(r <= 0) { + if(errno == EINTR) + continue; + else if(errno == EAGAIN) + return MP_INPUT_NOTHING; + if( r < 0) + mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n",strerror(errno)); + else + mp_msg(MSGT_INPUT,MSGL_ERR,"Error while reading joystick device: %s\n","EOF"); + return MP_INPUT_DEAD; + } + l += r; + } + + if((unsigned int)l < sizeof(struct js_event)) { + if(l > 0) + mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: We lose %d bytes of data\n",l); + return MP_INPUT_NOTHING; + } + + if(ev.type & JS_EVENT_INIT) { + mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick: warning init event, we have lost sync with driver.\n"); + ev.type &= ~JS_EVENT_INIT; + if(ev.type == JS_EVENT_BUTTON) { + int s = (btns >> ev.number) & 1; + if(s == ev.value) // State is the same : ignore + return MP_INPUT_NOTHING; + } + if(ev.type == JS_EVENT_AXIS) { + if( ( axis[ev.number] == 1 && ev.value > JOY_AXIS_DELTA) || + (axis[ev.number] == -1 && ev.value < -JOY_AXIS_DELTA) || + (axis[ev.number] == 0 && ev.value >= -JOY_AXIS_DELTA && ev.value <= JOY_AXIS_DELTA) + ) // State is the same : ignore + return MP_INPUT_NOTHING; + } + } + + if(ev.type & JS_EVENT_BUTTON) { + btns &= ~(1 << ev.number); + btns |= (ev.value << ev.number); + if(ev.value == 1) + return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_DOWN; + else + return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_UP; + } else if(ev.type & JS_EVENT_AXIS) { + if(ev.value < -JOY_AXIS_DELTA && axis[ev.number] != -1) { + axis[ev.number] = -1; + return (MP_JOY_AXIS0_MINUS+(2*ev.number)) | MP_KEY_STATE_DOWN; + } else if(ev.value > JOY_AXIS_DELTA && axis[ev.number] != 1) { + axis[ev.number] = 1; + return (MP_JOY_AXIS0_PLUS+(2*ev.number)) | MP_KEY_STATE_DOWN; + } else if(ev.value <= JOY_AXIS_DELTA && ev.value >= -JOY_AXIS_DELTA && axis[ev.number] != 0) { + int r = axis[ev.number] == 1 ? MP_JOY_AXIS0_PLUS+(2*ev.number) : MP_JOY_AXIS0_MINUS+(2*ev.number); + axis[ev.number] = 0; + return r | MP_KEY_STATE_UP; + } else + return MP_INPUT_NOTHING; + } else { + mp_msg(MSGT_INPUT,MSGL_WARN,"Joystick warning unknown event type %d\n",ev.type); + return MP_INPUT_ERROR; + } + + return MP_INPUT_NOTHING; +} -- cgit v1.2.3