555 lines
19 KiB
C
555 lines
19 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 Hanvon tablet driver
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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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* Maintained by: scuti@teknik.io
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* 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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#define STATE_SUCCESS 0
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#define STATE_NOT_FOUND 1
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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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#define AM_RESOLUTION 40
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#define AM_WHEEL_THRESHOLD 4
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#define AM_MAX_ABS_X 0x27DE
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#define AM_MAX_ABS_Y 0x1CFE
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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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#define APPIV_MAX_ABS_X 0x5750
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#define APPIV_MAX_ABS_Y 0x5750
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#define BUTTON_EVENT_GP 0x01
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#define PEN_EVENT 0x02
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#define BUTTON_EVENT_0906 0x0C
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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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struct hanvon_message {
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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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// GLOBAL
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int wheel_position;
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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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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,"\r");
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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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static inline void report_buttons( struct libevdev_uinput *ud,
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int buttons[],
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unsigned char data)
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{
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int err = 0;
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if((data & 0xf0) == 0xa0) {
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// TODO test that these are the correct buttons and all buttons are covered
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err = libevdev_uinput_write_event(ud, EV_KEY, buttons[1], (data & 0x02));
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(ud, EV_KEY, buttons[2], (data & 0x04));
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(ud, EV_KEY, buttons[3], (data & 0x08));
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if(err) { DEBUG("err: %d\n",err); }
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} else if(data <= 0x3f) { /* slider area active */
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int delta = data - wheel_position;
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if(abs(delta) < AM_WHEEL_THRESHOLD) {
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err = libevdev_uinput_write_event(ud, EV_REL, REL_WHEEL, delta); // TODO test delta as input
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if(err) { DEBUG("err: %d\n",err); }
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wheel_position = data;
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}
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}
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}
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// NOTE:
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// Judging by the original driver, this should work for all but may not work
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// for the APPIV0906. Possibly needs little endian for APPIV0906 x and y data
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// but we don't have any means of testing this without that tablet.
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// NOTE:
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// Left and right mouse click should work for all but additional buttons are
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// not supported by the default handler.
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void callback_default (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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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 BUTTON_EVENT_GP:
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if(data[1] == 0x55) { // left side buttons
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report_buttons(ud, lbuttons, msg->x_movement); // button pressed data in same place as position data
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}
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if(data[3] == 0xAA) { // right side buttons (am1107, am1209
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report_buttons(ud, rbuttons, msg->y_movement); // button pressed data in same place as position data
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}
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break;
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case PEN_EVENT:
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/* is_move values:
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0x80: near, 0x02: button press
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0x10: floating, 0x01: touching */
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_TOOL_PEN, msg->is_move & (0x80|0x10)
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);
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if(err) { DEBUG("err: %d\n",err); }
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if(msg->is_move & (0x80|0x10)) {
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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(
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ud, EV_ABS, ABS_X, msg->x_movement
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);
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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(
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ud, EV_ABS, ABS_Y, msg->y_movement
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);
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if(err) { DEBUG("err: %d\n",err); }
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}
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err = libevdev_uinput_write_event(
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ud, EV_ABS, ABS_PRESSURE, msg->pressure * 8 // reference original driver
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_ABS, ABS_TILT_X, msg->x_tilt
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_ABS, ABS_TILT_Y, msg->y_tilt
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_LEFT, msg->is_move & 0x01
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_RIGHT, (msg->is_move & 0x02) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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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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break;
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case BUTTON_EVENT_0906:
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// TODO confirm this is the byte that contains button flags
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_0, (msg->is_move & 0x0100) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_1, (msg->is_move & 0x0200) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_2, (msg->is_move & 0x0400) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_3, (msg->is_move & 0x0800) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_4, (msg->is_move & 0x1000) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_5, (msg->is_move & 0x2000) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_6, (msg->is_move & 0x4000) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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err = libevdev_uinput_write_event(
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ud, EV_KEY, BTN_7, (msg->is_move & 0x8000) / 2
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);
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if(err) { DEBUG("err: %d\n",err); }
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default:
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// do nothing
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break;
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}
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// always display packets
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display_packets(data);
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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,
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struct libevdev **evdev,
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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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wheel_position = AM_WHEEL_THRESHOLD - 1; // init global
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if (d == NULL) {
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return -1;
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}
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int is_ok = 0;
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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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// set up inputs all devices have
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libevdev_enable_property((*evdev), INPUT_PROP_DIRECT);
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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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libevdev_enable_event_type((*evdev), EV_KEY); // enable pen button
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_TOOL_PEN, NULL);
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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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// enable absolute position, pressure, tilt
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libevdev_enable_event_type((*evdev), EV_ABS);
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abs = malloc(sizeof(struct input_absinfo));
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// set up absolute x coordinate input
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abs->value = 0x1000;
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abs->minimum = 0;
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switch(desc.idProduct) {
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case PRODUCT_ID_APPIV0906:
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abs->maximum = APPIV_MAX_ABS_X;
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break;
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default:
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abs->maximum = AM_MAX_ABS_X;
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break;
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}
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abs->fuzz = 0;
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abs->flat = 0;
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abs->resolution = AM_RESOLUTION;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_X, abs)<0) {
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DEBUG("%s","failed to register absolute x\n");
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is_ok = -1;
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}
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// set up absolute y coordinate input
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abs->value = 0x1000;
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abs->minimum = 0;
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switch(desc.idProduct) {
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case PRODUCT_ID_APPIV0906:
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abs->maximum = APPIV_MAX_ABS_Y;
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break;
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default:
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abs->maximum = AM_MAX_ABS_Y;
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break;
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}
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abs->resolution = AM_RESOLUTION;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_Y, abs)<0) {
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DEBUG("%s","failed to register absolute y\n");
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is_ok = -1;
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}
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// set up pressure input
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abs -> value = 0;
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abs -> minimum = 0;
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abs -> maximum = AM_MAX_PRESSURE;
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abs -> resolution = 0;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_PRESSURE, abs)<0) {
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DEBUG("%s","failed to register pressure\n");
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is_ok = -1;
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}
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// set up tilt x input
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abs -> value = 0;
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abs -> minimum = 0;
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abs -> maximum = AM_MAX_TILT_X;
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abs -> resolution = 0;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_TILT_X, abs)<0) {
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DEBUG("%s","failed to register x tilt\n");
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is_ok = -1;
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}
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// set up tilt y input
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abs -> value = 0;
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abs -> minimum = 0;
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abs -> maximum = AM_MAX_TILT_Y;
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abs -> resolution = 0;
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if(libevdev_enable_event_code((*evdev), EV_ABS, ABS_TILT_Y, abs)<0) {
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DEBUG("%s","failed to register y tilt\n");
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is_ok = -1;
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}
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// Scroll wheel is NOT universal
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if(libevdev_enable_event_code((*evdev), EV_REL, REL_WHEEL, NULL)<0) {
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DEBUG("%s","failed to register scroll wheel\n");
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is_ok = -1;
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}
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// set up device-specific inputs
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switch(desc.idProduct) {
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case PRODUCT_ID_AM3M:
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case PRODUCT_ID_AM0806:
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case PRODUCT_ID_AM0605:
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_0, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_1, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_2, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_3, NULL);
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break;
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case PRODUCT_ID_AM1107:
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case PRODUCT_ID_AM1209:
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_0, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_1, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_2, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_3, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_4, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_5, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_6, NULL);
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libevdev_enable_event_code((*evdev), EV_KEY, BTN_7, NULL);
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break;
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default:
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// do nothing
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break;
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}
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// set up libevdev device name strings
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switch(desc.idProduct) {
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// cases are in ID order
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case PRODUCT_ID_AM3M:
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// space between Art and Master intentional
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libevdev_set_name((*evdev), "Hanvon Art Master III");
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break;
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case PRODUCT_ID_AM0806:
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libevdev_set_name((*evdev), "Hanvon ArtMaster AM0806");
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break;
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case PRODUCT_ID_AM0605:
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libevdev_set_name((*evdev), "Hanvon ArtMaster AM0605");
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break;
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case PRODUCT_ID_AM1107:
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// space between Art and Master intentional
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libevdev_set_name((*evdev), "Hanvon Art Master AM1107");
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break;
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case PRODUCT_ID_AM1209:
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libevdev_set_name((*evdev), "Hanvon ArtMaster AM1209");
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break;
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case PRODUCT_ID_RL0604:
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libevdev_set_name((*evdev), "Hanvon Rollick 0604");
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break;
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case PRODUCT_ID_RL0504:
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libevdev_set_name((*evdev), "Hanvon Rollick 0504");
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break;
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case PRODUCT_ID_GP0806:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0806");
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break;
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case PRODUCT_ID_GP0806B:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0806B");
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break;
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case PRODUCT_ID_GP0605:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0605");
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break;
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case PRODUCT_ID_GP0605A:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0605A");
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break;
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case PRODUCT_ID_GP0504:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0504");
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break;
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case PRODUCT_ID_NXS1513:
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libevdev_set_name((*evdev), "Hanvon Nilox NXS1513");
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break;
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case PRODUCT_ID_GP0906:
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libevdev_set_name((*evdev), "Hanvon Graphicpal 0906");
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break;
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case PRODUCT_ID_APPIV0906:
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libevdev_set_name((*evdev), "Hanvon Art Painter Pro APPIV0906");
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break;
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}
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int err = libevdev_uinput_create_from_device(
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(*evdev), LIBEVDEV_UINPUT_OPEN_MANAGED, uidev
|
|
);
|
|
printf("Initializing controls status: %x, \n", uidev);
|
|
free(abs);
|
|
return is_ok;
|
|
}
|
|
|
|
// GLOBAL: for main and hotplug_callback
|
|
static int HOT_COUNT = 0;
|
|
static struct libusb_transfer *TX = NULL;
|
|
void loop() {
|
|
int status = 0;
|
|
int LAST_HOT_COUNT = 0;
|
|
while (1) {
|
|
if (TX != NULL && TX->dev_handle != 0) {
|
|
status = libusb_submit_transfer(TX);
|
|
}
|
|
if (status < 0 && LAST_HOT_COUNT != HOT_COUNT) {
|
|
printf("\nwarning: usb transfer status = %i\n", status);
|
|
//continue;
|
|
}
|
|
LAST_HOT_COUNT = HOT_COUNT;
|
|
libusb_handle_events_completed(NULL, NULL);
|
|
}
|
|
}
|
|
|
|
// TODO: make scuti explain why this is called twice
|
|
int hotplug_callback(struct libusb_context *ctx, struct libusb_device *dev,
|
|
libusb_hotplug_event event, void *user_data) {
|
|
|
|
static libusb_device_handle *dev_handle;
|
|
static struct libevdev_uinput *uidev = NULL;
|
|
static struct libevdev *evdev = NULL;
|
|
struct libusb_device_descriptor desc;
|
|
int rc;
|
|
libusb_get_device_descriptor(dev, &desc);
|
|
if (LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED == event) {
|
|
// check if the device supported
|
|
libusb_device *devs[1] = {dev};
|
|
int index = find_device(devs, 1);
|
|
if (index < 0) {
|
|
printf("INFO: Detected Hanvon device, but it is not supported.\n");
|
|
} else {
|
|
// libusb functions that accept libusb_device = SAFE
|
|
// submit asynchronous transfers = SAFE
|
|
// other functions that accept device handle = NOT SAFE
|
|
libusb_open(dev, &dev_handle);
|
|
if (init_ctrl(dev, &evdev, &uidev) < 0) {
|
|
printf("Error: Could not initialize controls.\n");
|
|
exit(EXIT_FAILURE);
|
|
|
|
}
|
|
const int ENDPOINT_ADDR = 0x81; // bEndpointAddress from lsusb -v
|
|
//AM_PACKET_LEN = 10; // wMaxPacketSize from lsusb -v
|
|
unsigned char buffer[AM_PACKET_LEN];
|
|
TX = libusb_alloc_transfer(0);
|
|
libusb_fill_interrupt_transfer(
|
|
TX,
|
|
dev_handle,
|
|
ENDPOINT_ADDR,
|
|
buffer,
|
|
AM_PACKET_LEN,
|
|
callback_default,
|
|
uidev, // extra data to send in tx
|
|
130 // timeout in milliseconds
|
|
);
|
|
}
|
|
} else if (LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT) {
|
|
if (dev_handle) {
|
|
libusb_close(dev_handle);
|
|
dev_handle = NULL;
|
|
libevdev_uinput_destroy(uidev);
|
|
libusb_free_transfer(TX);
|
|
TX = NULL;
|
|
}
|
|
} else {
|
|
printf ("INFO: Device left, but handle did not exist.\n");
|
|
}
|
|
HOT_COUNT++;
|
|
return 0;
|
|
}
|
|
|
|
int main() {
|
|
#define UNREF_DEVICE 1
|
|
#define KEEP_DEVICE_REF 0
|
|
|
|
int r = libusb_init(NULL);
|
|
if (r < 0) {
|
|
return r;
|
|
}
|
|
libusb_hotplug_callback_handle callback_handle;
|
|
int rc;
|
|
rc = libusb_hotplug_register_callback(
|
|
NULL,
|
|
LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED |
|
|
LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT,
|
|
0,
|
|
VENDOR_ID_HANVON, // VENDOR
|
|
LIBUSB_HOTPLUG_MATCH_ANY, // PRODUCT
|
|
LIBUSB_HOTPLUG_MATCH_ANY, // DEV CLASS
|
|
hotplug_callback,
|
|
NULL,
|
|
&callback_handle
|
|
);
|
|
if (rc != LIBUSB_SUCCESS) {
|
|
printf("Error creating a hotplug callback\n");
|
|
libusb_exit(NULL);
|
|
return EXIT_FAILURE;
|
|
}
|
|
loop();
|
|
return 0;
|
|
}
|