mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 15:52:25 +00:00
ed71606e65
Until now, there were two functions to add input sources (stuff like stdin input, slave mode, lirc, joystick). Unify them to a single function (mp_input_add_fd()), and make sure the associated callbacks always have a context parameter. Change the lirc and joystick code such that they take store their state in a context struct (probably worthless), and use the new mp_msg replacements (the point of this refactoring). Additionally, get rid of the ugly USE_FD0_CMD_SELECT etc. ifdeffery in the terminal handling code.
181 lines
5.0 KiB
C
181 lines
5.0 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,&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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