mirror of
https://github.com/mpv-player/mpv
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78128bddda
I hate tabs. This replaces all tabs in all source files with spaces. The only exception is old-makefile. The replacement was made by running the GNU coreutils "expand" command on every file. Since the replacement was automatic, it's possible that some formatting was destroyed (but perhaps only if it was assuming that the end of a tab does not correspond to aligning the end to multiples of 8 spaces).
181 lines
5.1 KiB
C
181 lines
5.1 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include "joystick.h"
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#include "input.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#include "common/msg.h"
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#include "keycodes.h"
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#ifndef JOY_AXIS_DELTA
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#define JOY_AXIS_DELTA 500
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#endif
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#ifndef JS_DEV
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#define JS_DEV "/dev/input/js0"
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#endif
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#include <linux/joystick.h>
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static int mp_input_joystick_read(void *ctx, int fd);
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struct ctx {
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struct mp_log *log;
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int axis[256];
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int btns;
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};
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static int close_js(void *ctx, int fd)
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{
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talloc_free(ctx);
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return 0;
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}
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int mp_input_joystick_init(struct input_ctx *ictx, struct mp_log *log, char *dev)
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{
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int fd,l=0;
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int initialized = 0;
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struct js_event ev;
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mp_verbose(log, "Opening joystick device %s\n",dev ? dev : JS_DEV);
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fd = open( dev ? dev : JS_DEV , O_RDONLY | O_NONBLOCK );
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if(fd < 0) {
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mp_err(log, "Can't open joystick device %s: %s\n",dev ? dev : JS_DEV,strerror(errno));
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return -1;
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}
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struct ctx *ctx = talloc_ptrtype(NULL, ctx);
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*ctx = (struct ctx) {.log = log};
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while(! initialized) {
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l = 0;
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while((unsigned int)l < sizeof(struct js_event)) {
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int r = read(fd,((char*)&ev)+l,sizeof(struct js_event)-l);
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if(r < 0) {
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if(errno == EINTR)
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continue;
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else if(errno == EAGAIN) {
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initialized = 1;
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break;
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}
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MP_ERR(ctx, "Error while reading joystick device: %s\n",strerror(errno));
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close(fd);
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talloc_free(ctx);
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return -1;
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}
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l += r;
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}
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if((unsigned int)l < sizeof(struct js_event)) {
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if(l > 0)
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MP_WARN(ctx, "Joystick: We lose %d bytes of data\n",l);
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break;
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}
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if(ev.type == JS_EVENT_BUTTON)
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ctx->btns |= (ev.value << ev.number);
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if(ev.type == JS_EVENT_AXIS)
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ctx->axis[ev.number] = ev.value;
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}
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mp_input_add_fd(ictx, fd, 1, NULL, mp_input_joystick_read, close_js, ctx);
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return fd;
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}
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static int mp_input_joystick_read(void *pctx, int fd) {
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struct ctx *ctx = pctx;
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struct js_event ev;
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int l=0;
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while((unsigned int)l < sizeof(struct js_event)) {
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int r = read(fd,((char*)&ev)+l,sizeof(struct js_event)-l);
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if(r <= 0) {
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if(errno == EINTR)
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continue;
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else if(errno == EAGAIN)
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return MP_INPUT_NOTHING;
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if( r < 0)
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MP_ERR(ctx, "Error while reading joystick device: %s\n",strerror(errno));
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else
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MP_ERR(ctx, "Error while reading joystick device: %s\n","EOF");
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return MP_INPUT_DEAD;
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}
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l += r;
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}
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if((unsigned int)l < sizeof(struct js_event)) {
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if(l > 0)
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MP_WARN(ctx, "Joystick: We lose %d bytes of data\n",l);
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return MP_INPUT_NOTHING;
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}
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if(ev.type & JS_EVENT_INIT) {
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MP_WARN(ctx, "Joystick: warning init event, we have lost sync with driver.\n");
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ev.type &= ~JS_EVENT_INIT;
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if(ev.type == JS_EVENT_BUTTON) {
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int s = (ctx->btns >> ev.number) & 1;
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if(s == ev.value) // State is the same : ignore
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return MP_INPUT_NOTHING;
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}
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if(ev.type == JS_EVENT_AXIS) {
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if( ( ctx->axis[ev.number] == 1 && ev.value > JOY_AXIS_DELTA) ||
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(ctx->axis[ev.number] == -1 && ev.value < -JOY_AXIS_DELTA) ||
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(ctx->axis[ev.number] == 0 && ev.value >= -JOY_AXIS_DELTA && ev.value <= JOY_AXIS_DELTA)
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) // State is the same : ignore
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return MP_INPUT_NOTHING;
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}
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}
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if(ev.type & JS_EVENT_BUTTON) {
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ctx->btns &= ~(1 << ev.number);
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ctx->btns |= (ev.value << ev.number);
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if(ev.value == 1)
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return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_DOWN;
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else
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return (MP_JOY_BTN0 + ev.number) | MP_KEY_STATE_UP;
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} else if(ev.type & JS_EVENT_AXIS) {
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if(ev.value < -JOY_AXIS_DELTA && ctx->axis[ev.number] != -1) {
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ctx->axis[ev.number] = -1;
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return (MP_JOY_AXIS0_MINUS+(2*ev.number)) | MP_KEY_STATE_DOWN;
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} else if(ev.value > JOY_AXIS_DELTA && ctx->axis[ev.number] != 1) {
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ctx->axis[ev.number] = 1;
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return (MP_JOY_AXIS0_PLUS+(2*ev.number)) | MP_KEY_STATE_DOWN;
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} else if(ev.value <= JOY_AXIS_DELTA && ev.value >= -JOY_AXIS_DELTA && ctx->axis[ev.number] != 0) {
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int r = ctx->axis[ev.number] == 1 ? MP_JOY_AXIS0_PLUS+(2*ev.number) : MP_JOY_AXIS0_MINUS+(2*ev.number);
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ctx->axis[ev.number] = 0;
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return r | MP_KEY_STATE_UP;
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} else
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return MP_INPUT_NOTHING;
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} else {
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MP_WARN(ctx, "Joystick warning unknown event type %d\n",ev.type);
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return MP_INPUT_ERROR;
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}
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return MP_INPUT_NOTHING;
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}
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