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UltrafineDisplay.cpp
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UltrafineDisplay.cpp
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//
// Created by nagato on 9/9/20.
//
#include <cstring>
#include <stdlib.h>
#include <curses.h>
#include <unistd.h>
#include "UltrafineDisplay.h"
UltrafineDisplay::UltrafineDisplay(libusb_device *lg_usb) {
lg_dev = lg_usb;
libusb_open(lg_dev, &lg_handle);
struct libusb_device_descriptor desc;
int r = libusb_get_device_descriptor(lg_dev, &desc);
product_id = desc.idProduct;
vendor_id = desc.idVendor;
// libusb_get_string_descriptor_ascii(lg_handle, desc.iProduct, DisplayType, 127);
strcpy(DisplayType, support_device[product_id]);
libusb_set_auto_detach_kernel_driver(lg_handle, 1);
libusb_success = libusb_claim_interface(lg_handle, lg_iface);
if (libusb_success != LIBUSB_SUCCESS) {
printw("failed to claim interface %d. Error: %d\n", lg_iface, libusb_success);
printw("Error: %s\n", libusb_error_name(libusb_success));
}
}
UltrafineDisplay::UltrafineDisplay(const UltrafineDisplay &a) {
strcpy(DisplayType, a.DisplayType);
product_id = a.product_id;
vendor_id = a.vendor_id;
lg_dev = a.lg_dev;
lg_handle = a.lg_handle;
lg_iface = 1;
libusb_success = 0;
brightness_step = 5;
}
UltrafineDisplay::~UltrafineDisplay(){
}
void UltrafineDisplay::LG_Close(){
if (libusb_success == LIBUSB_SUCCESS){
libusb_release_interface(lg_handle, lg_iface);
libusb_attach_kernel_driver(lg_handle, lg_iface);
}
libusb_close(lg_handle);
}
uint16_t UltrafineDisplay::get_brightness() {
u_char data[8] = {0x00};
int res= libusb_control_transfer(lg_handle, LIBUSB_ENDPOINT_IN | LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE,
HID_GET_REPORT, (HID_REPORT_TYPE_FEATURE << 8) | 0, 1, data, sizeof(data), 0);
if (res < 0){
}
uint16_t val = data[0] + (data[1] << 8);
return val;
}
void UltrafineDisplay::set_brightness(uint16_t val) {
uint8_t data[6] = {
uint8_t(val & 0x00ff),
uint8_t((val >> 8) & 0x00ff),
0x00,
0x00,
0x00,
0x00
};
int res = libusb_control_transfer(lg_handle, LIBUSB_ENDPOINT_OUT | LIBUSB_REQUEST_TYPE_CLASS | LIBUSB_RECIPIENT_INTERFACE,
HID_SET_REPORT, (HID_REPORT_TYPE_FEATURE << 8) | 0, 1, data, sizeof(data), 0);
}
uint8_t UltrafineDisplay::get_brightness_level() {
uint16_t brightness = get_brightness();
return uint8_t((float(brightness) / 54000) * 100.0);
}
void UltrafineDisplay::set_brightness_level(uint8_t val) {
uint16_t brightess = val * 54000 / 100;
set_brightness(brightess);
}
char * UltrafineDisplay::getDisplayName() {
return DisplayType;
}
void UltrafineDisplay::interactive() {
uint8_t brightnessVolume;
brightnessVolume = get_brightness_level();
printw("Press '-' or '=' to adjust brightnes.\n");
printw("press 'i' to set brightness from 0 to 100.\n");
printw("press 'm' to set max brightness.\n");
printw("press 'u' to choose another display.\n");
printw("Current brghitness volume : %d\r", get_brightness_level());
int stop = false;
while(!stop){
clrtoeol();
usleep(400 * 1000);
printw("Current brghitness volume : %d\r", get_brightness_level());
int c = getch();
char buffer[128];
int input_volume;
switch(c){
case '+':
case '=':
brightnessVolume += brightness_step;
brightnessVolume = brightnessVolume > 100 ? 100 : brightnessVolume;
set_brightness_level(brightnessVolume);
break;
case '-':
case '_':
brightnessVolume -= brightness_step;
brightnessVolume = brightnessVolume < 0 ? 0 : brightnessVolume;
set_brightness_level(brightnessVolume);
break;
case 'i':
case 'I':
clear();
printw("Input brightness from 0 to 100\n");
printw("current brightness : %d\n", get_brightness_level());
printw("Input your brightness : ");
echo();
getstr(buffer);
noecho();
input_volume = atoi(buffer);
brightnessVolume = input_volume > 100 ? 100 : input_volume;
set_brightness_level(input_volume);
clear();
printw("Press '-' or '=' to adjust brightnes.\n");
printw("press 'i' to set brightness from 0 to 100.\n");
printw("press 'm' to set max brightness.\n");
printw("press 'u' to choose another display.\n");
break;
case 'm':
set_brightness_level(100);
break;
case 'u':
case 'q':
case '\n':
clear();
stop = true;
break;
default: break;
}
}
}