diff options
Diffstat (limited to 'minui/events.c')
| -rw-r--r-- | minui/events.c | 211 |
1 files changed, 0 insertions, 211 deletions
diff --git a/minui/events.c b/minui/events.c deleted file mode 100644 index df7dad4..0000000 --- a/minui/events.c +++ /dev/null @@ -1,211 +0,0 @@ -/* - * Copyright (C) 2007 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ - -#include <stdio.h> -#include <stdlib.h> -#include <fcntl.h> -#include <dirent.h> -#include <sys/epoll.h> - -#include <linux/input.h> - -#include "minui.h" - -#define MAX_DEVICES 16 -#define MAX_MISC_FDS 16 - -#define BITS_PER_LONG (sizeof(unsigned long) * 8) -#define BITS_TO_LONGS(x) (((x) + BITS_PER_LONG - 1) / BITS_PER_LONG) - -#define test_bit(bit, array) \ - ((array)[(bit)/BITS_PER_LONG] & (1 << ((bit) % BITS_PER_LONG))) - -struct fd_info { - int fd; - ev_callback cb; - void *data; -}; - -static int epollfd; -static struct epoll_event polledevents[MAX_DEVICES + MAX_MISC_FDS]; -static int npolledevents; - -static struct fd_info ev_fdinfo[MAX_DEVICES + MAX_MISC_FDS]; - -static unsigned ev_count = 0; -static unsigned ev_dev_count = 0; -static unsigned ev_misc_count = 0; - -int ev_init(ev_callback input_cb, void *data) -{ - DIR *dir; - struct dirent *de; - int fd; - struct epoll_event ev; - bool epollctlfail = false; - - epollfd = epoll_create(MAX_DEVICES + MAX_MISC_FDS); - if (epollfd == -1) - return -1; - - dir = opendir("/dev/input"); - if(dir != 0) { - while((de = readdir(dir))) { - unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)]; - -// fprintf(stderr,"/dev/input/%s\n", de->d_name); - if(strncmp(de->d_name,"event",5)) continue; - fd = openat(dirfd(dir), de->d_name, O_RDONLY); - if(fd < 0) continue; - - /* read the evbits of the input device */ - if (ioctl(fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits) < 0) { - close(fd); - continue; - } - - /* TODO: add ability to specify event masks. For now, just assume - * that only EV_KEY and EV_REL event types are ever needed. */ - if (!test_bit(EV_KEY, ev_bits) && !test_bit(EV_REL, ev_bits)) { - close(fd); - continue; - } - - ev.events = EPOLLIN | EPOLLWAKEUP; - ev.data.ptr = (void *)&ev_fdinfo[ev_count]; - if (epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev)) { - close(fd); - epollctlfail = true; - continue; - } - - ev_fdinfo[ev_count].fd = fd; - ev_fdinfo[ev_count].cb = input_cb; - ev_fdinfo[ev_count].data = data; - ev_count++; - ev_dev_count++; - if(ev_dev_count == MAX_DEVICES) break; - } - } - - if (epollctlfail && !ev_count) { - close(epollfd); - epollfd = -1; - return -1; - } - - return 0; -} - -int ev_add_fd(int fd, ev_callback cb, void *data) -{ - struct epoll_event ev; - int ret; - - if (ev_misc_count == MAX_MISC_FDS || cb == NULL) - return -1; - - ev.events = EPOLLIN | EPOLLWAKEUP; - ev.data.ptr = (void *)&ev_fdinfo[ev_count]; - ret = epoll_ctl(epollfd, EPOLL_CTL_ADD, fd, &ev); - if (!ret) { - ev_fdinfo[ev_count].fd = fd; - ev_fdinfo[ev_count].cb = cb; - ev_fdinfo[ev_count].data = data; - ev_count++; - ev_misc_count++; - } - - return ret; -} - -int ev_get_epollfd(void) -{ - return epollfd; -} - -void ev_exit(void) -{ - while (ev_count > 0) { - close(ev_fdinfo[--ev_count].fd); - } - ev_misc_count = 0; - ev_dev_count = 0; - close(epollfd); -} - -int ev_wait(int timeout) -{ - npolledevents = epoll_wait(epollfd, polledevents, ev_count, timeout); - if (npolledevents <= 0) - return -1; - return 0; -} - -void ev_dispatch(void) -{ - int n; - int ret; - - for (n = 0; n < npolledevents; n++) { - struct fd_info *fdi = polledevents[n].data.ptr; - ev_callback cb = fdi->cb; - if (cb) - cb(fdi->fd, polledevents[n].events, fdi->data); - } -} - -int ev_get_input(int fd, uint32_t epevents, struct input_event *ev) -{ - int r; - - if (epevents & EPOLLIN) { - r = read(fd, ev, sizeof(*ev)); - if (r == sizeof(*ev)) - return 0; - } - return -1; -} - -int ev_sync_key_state(ev_set_key_callback set_key_cb, void *data) -{ - unsigned long key_bits[BITS_TO_LONGS(KEY_MAX)]; - unsigned long ev_bits[BITS_TO_LONGS(EV_MAX)]; - unsigned i; - int ret; - - for (i = 0; i < ev_dev_count; i++) { - int code; - - memset(key_bits, 0, sizeof(key_bits)); - memset(ev_bits, 0, sizeof(ev_bits)); - - ret = ioctl(ev_fdinfo[i].fd, EVIOCGBIT(0, sizeof(ev_bits)), ev_bits); - if (ret < 0 || !test_bit(EV_KEY, ev_bits)) - continue; - - ret = ioctl(ev_fdinfo[i].fd, EVIOCGKEY(sizeof(key_bits)), key_bits); - if (ret < 0) - continue; - - for (code = 0; code <= KEY_MAX; code++) { - if (test_bit(code, key_bits)) - set_key_cb(code, 1, data); - } - } - - return 0; -} |