365 lines
11 KiB
C
365 lines
11 KiB
C
/*
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* =====================================================================================
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*
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* Filename: hanvon-libusb.c
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*
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* Description: Libusb GP0504 handler prototype
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*
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* Version: 0.1
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* Created: 08/17/2020 04:05:14 PM
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* Revision: none
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* Compiler: gcc
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*
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* Author: surkeh@protonmail.com
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*
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* =====================================================================================
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*/
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#define DEBUG(msg,...) fprintf(stderr,"%s(%d): " msg , __FILE__,__LINE__,__VA_ARGS__)
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#include <stdlib.h>
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#include <stdio.h>
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#include <libusb-1.0/libusb.h>
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#include <libevdev/libevdev.h>
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#include <libevdev/libevdev-uinput.h>
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// #include <asm/unaligned.h>
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#define STATE_SUCCESS 0
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#define STATE_NOT_FOUND 1
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#define UNREF_DEVICE 1
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#define KEEP_DEVICE_REF 0
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#define VENDOR_ID_HANVON 0x0b57
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#define PRODUCT_ID_AM3M 0x8528
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#define PRODUCT_ID_AM0806 0x8502
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#define PRODUCT_ID_AM0605 0x8503
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#define PRODUCT_ID_AM1107 0x8505
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#define PRODUCT_ID_AM1209 0x8501
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#define PRODUCT_ID_RL0604 0x851f
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#define PRODUCT_ID_RL0504 0x851d
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#define PRODUCT_ID_GP0806 0x8039
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#define PRODUCT_ID_GP0806B 0x8511
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#define PRODUCT_ID_GP0605 0x8512
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#define PRODUCT_ID_GP0605A 0x803a
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#define PRODUCT_ID_GP0504 0x8037
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#define PRODUCT_ID_NXS1513 0x8030
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#define PRODUCT_ID_GP0906 0x8521
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#define PRODUCT_ID_APPIV0906 0x8532
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#define AM_PACKET_LEN 10
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//static int lbuttons[]={BTN_0,BTN_1,BTN_2,BTN_3}; /* reported on all AMs */
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//static int rbuttons[]={BTN_4,BTN_5,BTN_6,BTN_7}; /* reported on AM1107+ */
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#define AM_WHEEL_THRESHOLD 4
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#define AM_MAX_TILT_X 0x3f
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#define AM_MAX_TILT_Y 0x7f
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#define AM_MAX_PRESSURE 0x400
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struct hanvon_message
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{
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unsigned char msgtype;
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unsigned char is_move;
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unsigned short x_movement;
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unsigned short y_movement;
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unsigned char pressure;
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unsigned char x_tilt;
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unsigned char y_tilt;
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};
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int find_device(libusb_device **list, unsigned int count) {
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if (count < 0) {
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return -1;
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}
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int found = -1;
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struct libusb_device_descriptor desc;
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for (unsigned int i = 0; i < count; i++) {
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libusb_device *t = list[i];
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libusb_get_device_descriptor(list[i], &desc);
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// printf( "Dev%u ID %04x:%04x\n", (i), desc.idVendor, desc.idProduct );
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if (desc.idVendor == VENDOR_ID_HANVON) {
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switch(desc.idProduct) {
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default:
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break;
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case PRODUCT_ID_AM0806:
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case PRODUCT_ID_AM0605:
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case PRODUCT_ID_AM1107:
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case PRODUCT_ID_AM1209:
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case PRODUCT_ID_RL0604:
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case PRODUCT_ID_RL0504:
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case PRODUCT_ID_GP0806:
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case PRODUCT_ID_GP0806B:
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case PRODUCT_ID_GP0605:
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case PRODUCT_ID_GP0605A:
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case PRODUCT_ID_GP0504:
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case PRODUCT_ID_NXS1513:
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case PRODUCT_ID_GP0906:
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case PRODUCT_ID_APPIV0906:
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return i;
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} // end switch
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} // end if
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} // end for
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return found;
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}
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void display_packets(const unsigned char* buf) {
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for(int i = 0; i < AM_PACKET_LEN; i++) {
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fprintf(stderr,"0x%x, ", buf[i]);
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}
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fprintf(stderr,"\n");
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}
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void callback(struct libusb_transfer *transfer) {
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unsigned char *data = transfer -> buffer;
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display_packets(data);
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}
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void callback_gp0504 (struct libusb_transfer *tx) { // for callback
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unsigned char *data = tx -> buffer;
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struct hanvon_message *msg = (struct hanvon_message *)tx -> buffer;
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unsigned short temp;
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int err = 0;
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struct libevdev_uinput *ud = tx -> user_data;
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switch(msg->msgtype) {
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case 0x01:
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display_packets(data);
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break;
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case 0x02:
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/*is_move values:
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0x80: near
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0x10: floating
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0x02: button press
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0x01: touching
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*/
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if(msg->is_move & (0x80|0x10))
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{
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msg->x_movement = htobe16(msg->x_movement);
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//DEBUG("Set X to %x\n",msg->x_movement);
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err = libevdev_uinput_write_event(ud, EV_ABS, ABS_X, msg->x_movement);
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if(err) { DEBUG("err: %d\n",err); }
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msg->y_movement = htobe16(msg->y_movement);
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//DEBUG("Set Y to %x\n",msg->y_movement);
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err = libevdev_uinput_write_event(ud, EV_ABS, ABS_Y, msg->y_movement);
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if(err) { DEBUG("err: %d\n",err); }
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}
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err = libevdev_uinput_write_event(ud, EV_KEY, BTN_LEFT, msg->is_move & 0x01);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(ud, EV_KEY, BTN_RIGHT, msg->is_move & 0x02);
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if(err) { DEBUG("err: %d\n",err); }
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// pen touches surface
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//err += libevdev_uinput_write_event(ud, EV_KEY, BTN_LEFT, data[6] > 68);
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// data[1]:
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// 0x10 = lift, 0x90 = close, 0x91 = press
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// 0x12 = btn (lift), 0x92 = btn (close), 0x93 = btn (press)
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//err += libevdev_uinput_write_event(ud, EV_KEY, BTN_RIGHT, data[1] & 0x02);
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// if((data[1] & 0xf0) != 0) {
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// //absolute x
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// temp = data[2];
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// temp <<= 8;
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// temp += data[3];
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// err += libevdev_uinput_write_event(ud, EV_ABS, ABS_X, temp);
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// //absolute y
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// temp = data[4];
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// temp <<= 8;
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// temp += data[5];
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// err += libevdev_uinput_write_event(ud, EV_ABS, ABS_Y, temp);
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// }
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//else
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{
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display_packets(data);
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}
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break;
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default:
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display_packets(data);
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break;
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}
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err += libevdev_uinput_write_event(ud, EV_SYN, SYN_REPORT, 0);
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if (err != 0) {
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printf("error : gp0504, %i\n", err);
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}
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return;
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}
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// https://www.freedesktop.org/software/libevdev/doc/latest/group__kernel.html
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int init_ctrl(struct libusb_device * const d, struct libevdev **evdev, struct libevdev_uinput **uidev) {
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struct input_absinfo *abs;
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printf("init_ctrl: %x\n", uidev);
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int is_ok = 0;
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if (d == NULL) {
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return is_ok;
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}
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struct libusb_device_descriptor desc;
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libusb_get_device_descriptor(d, &desc);
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(*evdev) = libevdev_new();
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libevdev_enable_event_type((*evdev), EV_SYN);
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libevdev_enable_event_code((*evdev), EV_SYN, SYN_REPORT, NULL);
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// every tablet has these features
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libevdev_enable_event_type((*evdev), EV_KEY); // enable pen button
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_LEFT, NULL); // pen tap
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_RIGHT, NULL); // pen button
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libevdev_enable_event_type((*evdev), EV_ABS); // enable absolute position
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abs = malloc(sizeof(struct input_absinfo));
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abs->value = 0x1000;
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abs->minimum = 0;
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abs->maximum = 0x27DE;
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abs->fuzz = 0;
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abs->flat = 0;
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abs->resolution = 40;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_X, abs)<0) // pen button
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{
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DEBUG("%s","failed to register absolute x\n");
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}
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abs = malloc(sizeof(struct input_absinfo));
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abs->value = 0x1000;
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abs->minimum = 0;
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abs->maximum = 0x1cfe;
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abs->fuzz = 0;
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abs->flat = 0;
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abs->resolution = 40;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_Y, abs)<0) // pen button
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{
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DEBUG("%s","failed to register absolute x\n");
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}
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switch(desc.idProduct) {
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case PRODUCT_ID_GP0504:
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libevdev_set_name((*evdev), "Hanvon Graphicpal GP0504");
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break;
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case PRODUCT_ID_GP0906:
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break;
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case PRODUCT_ID_APPIV0906:
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break;
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}
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int err = libevdev_uinput_create_from_device((*evdev), LIBEVDEV_UINPUT_OPEN_MANAGED, uidev);
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printf("Initializing controls status: %x, \n", uidev);
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return is_ok;
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}
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int handle_device_lusb(libusb_device *d) {
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libusb_device_handle *h;
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int status = libusb_open(d, &h);
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if (status < 0 || h == NULL) {
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printf("Error opening device, %i.\n", status);
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return 0;
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}
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struct libevdev *evdev = NULL;
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struct libevdev_uinput *uidev = NULL;
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printf("handle_device: %x\n", uidev);
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init_ctrl(d, &evdev, &uidev);
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if (evdev == NULL || uidev == NULL) {
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printf("Error initializing controls, %x, %x.\n", evdev, uidev);
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return 0;
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}
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struct libusb_transfer *tx;
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const int ENDPOINT_ADDR = 0x81; // bEndpointAddress from lsusb -v
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// AM_PACKET_LEN = 10; // wMaxPacketSize from lsusb -v
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unsigned char buffer[AM_PACKET_LEN];
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// Allocate memory for transfer, configure, then submit
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tx = libusb_alloc_transfer(0);
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libusb_fill_interrupt_transfer( tx,
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h,
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ENDPOINT_ADDR,
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buffer,
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AM_PACKET_LEN,
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callback_gp0504,
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uidev, // extra data to send in tx
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130); // timeout in milliseconds
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do {
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status = libusb_submit_transfer(tx);
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if (status < 0 ) {
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//return status;
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//continue;
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}
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libusb_handle_events(NULL);
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} while (1);
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libevdev_uinput_destroy(uidev);
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return 0;
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}
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libusb_device *FindHanvon( libusb_context **context);
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int HandleData( void );
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int main()
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{
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#define UNREF_DEVICE 1
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#define KEEP_DEVICE_REF 0
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libusb_device ** devs;
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int r = libusb_init(NULL);
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if (r < 0) {
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return r;
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}
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int count = libusb_get_device_list(NULL, &devs);
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if (count < 0) {
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libusb_exit(NULL);
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return count;
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}
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int index = find_device(devs, count);
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if (index < 0) {
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printf("Device not plugged in\n");
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libusb_exit(NULL);
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return 0;
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}
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libusb_device *device = devs[index];
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libusb_free_device_list (devs, UNREF_DEVICE);
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int s = handle_device_lusb(device);
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libusb_exit(NULL);
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return 0;
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}
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libusb_device *FindHanvon( libusb_context **context)
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{
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libusb_device **deviceList;
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libusb_device *found = NULL;
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ssize_t nDevices = libusb_get_device_list( context[0], &deviceList);
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if( nDevices > 0 )
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{
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struct libusb_device_descriptor description;
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for( ssize_t i = 0; i < nDevices; i++ )
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{
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libusb_device *device = deviceList[i];
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libusb_get_device_descriptor(device, &description);
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//printf( "Dev%u ID %04x:%04x\n", (i + 1), description.idVendor, description.idProduct );
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if( description.idVendor == VENDOR_ID_HANVON )
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{
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switch( description.idProduct )
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case PRODUCT_ID_AM0806:
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case PRODUCT_ID_AM0605:
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case PRODUCT_ID_AM1107:
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case PRODUCT_ID_AM1209:
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case PRODUCT_ID_RL0604:
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case PRODUCT_ID_RL0504:
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case PRODUCT_ID_GP0806:
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case PRODUCT_ID_GP0806B:
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case PRODUCT_ID_GP0605:
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case PRODUCT_ID_GP0605A:
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case PRODUCT_ID_GP0504:
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case PRODUCT_ID_NXS1513:
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case PRODUCT_ID_GP0906:
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case PRODUCT_ID_APPIV0906:
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found = device;
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break;
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}
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}
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printf( "\n\n" );
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}
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libusb_free_device_list( deviceList, UNREF_DEVICE );
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return found;
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}
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