#include "button.h"
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#include <stdbool.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <linux/input.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 <assert.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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struct button{
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pthread_t pid;
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int fd;
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button_event_cb cb;
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void *userdata;
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};
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//RK3308麦克风采集自带5个按键，按键设备为/dev/input/event1，每个按键的code码如下：
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typedef enum {
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//短按代表音量加；长按代表上一首
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PHY_BUTTON_CODE_VOLUME_ADD = 115,
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//短按代表音量减；长按代表下一首
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PHY_BUTTON_CODE_VOLUME_SUB = 114,
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//只支持短按
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PHY_BUTTON_CODE_MUTE = 248,
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//只支持短按
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PHY_BUTTON_CODE_PLAY_PAUSE = 207,
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//长按代表进入配网模式
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PHY_BUTTON_CODE_MODE = 373
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}phy_button_code_t;
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typedef struct {
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int val;
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struct timeval last_time;
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bool long_pressed;
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}phy_button_t;
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#define PHY_BUTTON_NUM 5
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static bool is_long_pressed(struct timeval *now, struct timeval *before, int interval) {
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int64_t expire = now->tv_sec * 1000 + now->tv_usec / 1000 - (before->tv_sec * 1000 + before->tv_usec / 1000);
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if (expire >= interval) {
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return true;
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}
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return false;
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}
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int button_run(button_handle_t self) {
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return button_run2(self, 100);
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}
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int button_run2(button_handle_t self, int ms) {
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fd_set rfd;
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struct timeval tv;
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struct input_event ev;
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int ret;
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phy_button_t buttons[PHY_BUTTON_NUM];
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memset(buttons, 0, sizeof(buttons));
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/*
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buttons[0] ---> PHY_BUTTON_CODE_VOLUME_ADD
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buttons[1] ---> PHY_BUTTON_CODE_VOLUME_SUB
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buttons[2] ---> PHY_BUTTON_CODE_MUTE
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buttons[3] ---> PHY_BUTTON_CODE_PLAY_PAUSE
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buttons[4] ---> PHY_BUTTON_CODE_MODE
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*/
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while (1) {
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tv.tv_sec = 0;
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tv.tv_usec = ms * 1000;
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FD_ZERO(&rfd);
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FD_SET(self->fd, &rfd);
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ret = select(self->fd + 1, &rfd, NULL, NULL, &tv);
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if (ret == 0) {
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struct timeval now;
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gettimeofday(&now, NULL);
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//if (buttons[0].long_pressed == false && buttons[0].val == 1 && is_long_pressed(&now, &buttons[0].last_time, 1500)) {
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if (buttons[0].val == 1 && is_long_pressed(&now, &buttons[0].last_time, 1500)) {
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self->cb(BUTTON_EVENT_PREV, self->userdata);
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buttons[0].long_pressed = true;
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buttons[0].last_time = now;
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//} else if (buttons[1].long_pressed == false && buttons[1].val == 1 && is_long_pressed(&now, &buttons[1].last_time, 1500)) {
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} else if (buttons[1].val == 1 && is_long_pressed(&now, &buttons[1].last_time, 1500)) {
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self->cb(BUTTON_EVENT_NEXT, self->userdata);
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buttons[1].long_pressed = true;
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buttons[1].last_time = now;
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} else if (buttons[2].long_pressed == false && buttons[2].val == 1 && is_long_pressed(&now, &buttons[2].last_time, 1500)) {
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buttons[2].long_pressed = true;
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self->cb(BUTTON_EVENT_MUTE_UNMUTE_LONG, self->userdata);
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buttons[2].long_pressed = true;
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buttons[2].last_time = now;
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} else if (buttons[3].long_pressed == false && buttons[3].val == 1 && is_long_pressed(&now, &buttons[3].last_time, 1500)) {
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buttons[3].long_pressed = true;
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self->cb(BUTTON_EVENT_PLAY_PAUSE_LONG, self->userdata);
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buttons[3].long_pressed = true;
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buttons[3].last_time = now;
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} else if (buttons[4].long_pressed == false && buttons[4].val == 1 && is_long_pressed(&now, &buttons[4].last_time, 3000)) {
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self->cb(BUTTON_EVENT_MODE_WIFI, self->userdata);
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buttons[4].long_pressed = true;
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buttons[4].last_time = now;
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}
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}
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if ((ret > 0) && FD_ISSET(self->fd, &rfd)) {
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memset(&ev, 0, sizeof(ev));
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read(self->fd, &ev, sizeof(ev));
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if (ev.type == EV_KEY) {
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//printf("type: %d, code: %d, value: %d\n", ev.type, ev.code, ev.value);
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//按键状态发生改变
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switch (ev.code) {
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case PHY_BUTTON_CODE_VOLUME_ADD:
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if (buttons[0].val == 0 && ev.value == 1) {
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//按键按下，开始计时
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gettimeofday(&buttons[0].last_time, NULL);
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} else if (buttons[0].val == 1 && ev.value == 0) {
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//按键松开
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if (!buttons[0].long_pressed) {
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self->cb(BUTTON_EVENT_VOLUME_ADD, self->userdata);
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}
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buttons[0].long_pressed = false;
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}
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//更新按键状态
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buttons[0].val = ev.value;
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break;
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case PHY_BUTTON_CODE_VOLUME_SUB:
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if (buttons[1].val == 0 && ev.value == 1) {
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//按键按下，开始计时
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gettimeofday(&buttons[1].last_time, NULL);
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} else if (buttons[1].val == 1 && ev.value == 0) {
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//按键松开
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if (!buttons[1].long_pressed) {
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self->cb(BUTTON_EVENT_VOLUME_SUB, self->userdata);
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}
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buttons[1].long_pressed = false;
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}
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//更新按键状态
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buttons[1].val = ev.value;
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break;
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case PHY_BUTTON_CODE_MUTE:
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if (buttons[2].val == 0 && ev.value == 1) {
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//按键按下，开始计时
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gettimeofday(&buttons[2].last_time, NULL);
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} else if (buttons[2].val == 1 && ev.value == 0) {
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//按键松开
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if (!buttons[2].long_pressed) {
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self->cb(BUTTON_EVENT_MUTE_UNMUTE, self->userdata);
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}
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buttons[2].long_pressed = false;
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}
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//更新按键状态
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buttons[2].val = ev.value;
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break;
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case PHY_BUTTON_CODE_PLAY_PAUSE:
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if (buttons[3].val == 0 && ev.value == 1) {
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//按键按下，开始计时
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gettimeofday(&buttons[3].last_time, NULL);
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} else if (buttons[3].val == 1 && ev.value == 0) {
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//按键松开
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if (!buttons[3].long_pressed) {
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self->cb(BUTTON_EVENT_PLAY_PAUSE, self->userdata);
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}
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buttons[3].long_pressed = false;
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}
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//更新按键状态
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buttons[3].val = ev.value;
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break;
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case PHY_BUTTON_CODE_MODE:
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if (buttons[4].val == 0 && ev.value == 1) {
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//按键按下，开始计时
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gettimeofday(&buttons[4].last_time, NULL);
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} else if (buttons[4].val == 1 && ev.value == 0) {
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//按键松开
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if (!buttons[4].long_pressed) {
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self->cb(BUTTON_EVENT_MODE_NORMAL, self->userdata);
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}
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buttons[4].long_pressed = false;
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}
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//更新按键状态
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buttons[4].val = ev.value;
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break;
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default:break;
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}
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}
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}
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}
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return 0;
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}
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button_handle_t button_create(button_config_t *config) {
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button_handle_t self = (button_handle_t)calloc(1, sizeof(*self));
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if (self) {
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if (!config->dev) {
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#ifdef RK3308_BOARD_V10
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config->dev = "/dev/input/event1";
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#elif defined(RK3308_BOARD_V11)
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config->dev = "/dev/input/event0";
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#else
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#error "RK3308 BOADRD VERSION IS ERROR"
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#endif
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}
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self->fd = open(config->dev, O_RDONLY);
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assert(self->fd > 0);
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self->cb = config->cb;
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self->userdata = config->userdata;
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}
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return self;
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}
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void button_destroy(button_handle_t self) {
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if (!self) return;
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close(self->fd);
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free(self);
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}
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