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88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
/*
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KindlePDFViewer: power slider key event watcher
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Copyright (C) 2012 Qingping Hou <dave2008713@gamil.com>
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This program 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 3 of the License, or
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(at your option) any later version.
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This program 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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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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 <fcntl.h>
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#include <linux/input.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <errno.h>
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#define OUTPUT_SIZE 21
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#define EVENT_PIPE "/tmp/event_slider"
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#define CODE_IN_SAVER 10000
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#define CODE_OUT_SAVER 10001
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int
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main ( int argc, char *argv[] )
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{
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int fd, ret;
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FILE *fp;
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char std_out[OUTPUT_SIZE] = "";
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struct input_event ev;
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__u16 key_code = 10000;
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/* create the npipe if not exists */
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/*if(access(argv[1], F_OK)){*/
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/*printf("npipe %s not found, try to create it...\n", argv[1]);*/
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/*if(mkfifo(argv[1], 0777)) {*/
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/*printf("Create npipe %s failed!\n", argv[1]);*/
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/*}*/
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/*}*/
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/* open npipe for writing */
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fd = open(argv[1], O_RDWR | O_NONBLOCK);
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if(fd < 0) {
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printf("Open %s falied: %s\n", argv[1], strerror(errno));
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exit(EXIT_FAILURE);
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}
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/* initialize event struct */
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ev.type = EV_KEY;
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ev.code = key_code;
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ev.value = 1;
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while(1) {
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/* listen power slider events */
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memset(std_out, 0, OUTPUT_SIZE);
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fp = popen("lipc-wait-event -s 0 com.lab126.powerd goingToScreenSaver,outOfScreenSaver", "r");
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ret = fread(std_out, OUTPUT_SIZE, 1, fp);
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pclose(fp);
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/* fill event struct */
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gettimeofday(&ev.time, NULL);
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if(std_out[0] == 'g') {
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ev.code = CODE_IN_SAVER;
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} else if(std_out[0] == 'o') {
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ev.code = CODE_OUT_SAVER;
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} else {
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printf("Unrecognized event.\n");
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exit(EXIT_FAILURE);
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}
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/* generate event */
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ret = write(fd, &ev, sizeof(struct input_event));
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}
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close(fd);
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return EXIT_SUCCESS;
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}
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