118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
/*
|
|
DingusPPC - The Experimental PowerPC Macintosh emulator
|
|
Copyright (C) 2018-23 divingkatae and maximum
|
|
(theweirdo) spatium
|
|
|
|
(Contact divingkatae#1017 or powermax#2286 on Discord for more info)
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/** @file Apple Desktop Bus Keyboard emulation. */
|
|
|
|
#include <devices/common/adb/adbkeyboard.h>
|
|
#include <devices/common/adb/adbbus.h>
|
|
#include <devices/deviceregistry.h>
|
|
#include <core/hostevents.h>
|
|
#include <loguru.hpp>
|
|
|
|
AdbKeyboard::AdbKeyboard(std::string name) : AdbDevice(name) {
|
|
EventManager::get_instance()->add_keyboard_handler(this, &AdbKeyboard::event_handler);
|
|
|
|
this->reset();
|
|
}
|
|
|
|
void AdbKeyboard::event_handler(const KeyboardEvent& event) {
|
|
this->pending_events.push_back(std::make_unique<KeyboardEvent>(event));
|
|
}
|
|
|
|
void AdbKeyboard::reset() {
|
|
this->my_addr = ADB_ADDR_KBD;
|
|
this->dev_handler_id = 2; // Extended ADB keyboard
|
|
this->exc_event_flag = 1;
|
|
this->srq_flag = 1; // enable service requests
|
|
this->pending_events.clear();
|
|
}
|
|
|
|
bool AdbKeyboard::get_register_0() {
|
|
if (this->pending_events.empty()) {
|
|
return false;
|
|
}
|
|
uint8_t* out_buf = this->host_obj->get_output_buf();
|
|
out_buf[0] = this->consume_pending_event();
|
|
out_buf[1] = this->consume_pending_event();
|
|
this->host_obj->set_output_count(2);
|
|
return true;
|
|
}
|
|
|
|
uint8_t AdbKeyboard::consume_pending_event() {
|
|
if (this->pending_events.empty()) {
|
|
// In most cases we have only one pending event when the host polls us,
|
|
// but we need to fill two entries of the output buffer. We need to set
|
|
// the key status bit to 1 (released), and the key to a non-existent
|
|
// one (0x7F). Otherwise if we leave it empty, the host will think that
|
|
// the 'a' key (code 0) is pressed (status 0).
|
|
return 0xFF;
|
|
}
|
|
std::unique_ptr<KeyboardEvent> event = std::move(this->pending_events.front());
|
|
this->pending_events.pop_front();
|
|
|
|
uint8_t key_state = 0;
|
|
if (event->flags & KEYBOARD_EVENT_DOWN) {
|
|
key_state = 0;
|
|
} else if (event->flags & KEYBOARD_EVENT_UP) {
|
|
key_state = 1;
|
|
} else {
|
|
LOG_F(WARNING, "%s: unknown keyboard event flags %x", this->name.c_str(), event->flags);
|
|
}
|
|
|
|
return (key_state << 7) | (event->key & 0x7F);
|
|
}
|
|
|
|
void AdbKeyboard::set_register_2() {
|
|
}
|
|
|
|
void AdbKeyboard::set_register_3() {
|
|
if (this->host_obj->get_input_count() < 2) // ensure we got enough data
|
|
return;
|
|
|
|
const uint8_t* in_data = this->host_obj->get_input_buf();
|
|
|
|
switch (in_data[1]) {
|
|
case 0:
|
|
this->my_addr = in_data[0] & 0xF;
|
|
this->srq_flag = !!(in_data[0] & 0x20);
|
|
break;
|
|
case 1:
|
|
case 2:
|
|
this->dev_handler_id = in_data[1];
|
|
break;
|
|
case 3: // extended keyboard protocol isn't supported yet
|
|
break;
|
|
case 0xFE: // move to a new address if there was no collision
|
|
if (!this->got_collision) {
|
|
this->my_addr = in_data[0] & 0xF;
|
|
}
|
|
break;
|
|
default:
|
|
LOG_F(WARNING, "%s: unknown handler ID = 0x%X", this->name.c_str(), in_data[1]);
|
|
}
|
|
}
|
|
|
|
static const DeviceDescription AdbKeyboard_Descriptor = {
|
|
AdbKeyboard::create, {}, {}
|
|
};
|
|
|
|
REGISTER_DEVICE(AdbKeyboard, AdbKeyboard_Descriptor);
|