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https://github.com/libretro/RetroArch.git
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7954dab835
== DETAILS Starting to implement the I/O handling on the HID driver. The old implementation basically had a never-ending HIDRead() callback set up, so that callback N would start the read process for invocation N+1. We will take the same approach here; but now that the I/O thread is happenning on its own core, we should be able to let it run full- throttle without impacting emulator performance. Of course, this hinges on the callback actually running on the same core as the syscall was initiated on. == TESTING Can confirm that the read_loop_callback gets invoked on the same core that the HIDRead() was invoked on.
111 lines
3.5 KiB
C
111 lines
3.5 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2013-2014 - Jason Fetters
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __WIIU_HID__H
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#define __WIIU_HID__H
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#include "../connect/joypad_connection.h"
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#include "../input_defines.h"
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#include "../input_driver.h"
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#include "../../verbosity.h"
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#define DEVICE_UNUSED 0
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#define DEVICE_USED 1
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#define MAX_HID_PADS 5
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#define ADAPTER_STATE_NEW 0
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#define ADAPTER_STATE_READING 1
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#define ADAPTER_STATE_DONE 2
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typedef struct wiiu_hid
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{
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HIDClient *client;
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joypad_connection_t *connections;
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OSThread *polling_thread;
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void *polling_thread_stack;
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volatile bool polling_thread_quit;
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} wiiu_hid_t;
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typedef struct wiiu_adapter wiiu_adapter_t;
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struct wiiu_adapter {
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wiiu_adapter_t *next;
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wiiu_hid_t *hid;
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uint8_t state;
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uint8_t *rx_buffer;
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uint32_t rx_size;
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int32_t slot;
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uint32_t handle;
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uint8_t interface_index;
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};
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typedef struct wiiu_attach wiiu_attach_event;
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struct wiiu_attach {
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wiiu_attach_event *next;
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uint32_t type;
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uint32_t handle;
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uint16_t vendor_id;
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uint16_t product_id;
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uint8_t interface_index;
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uint8_t is_keyboard;
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uint8_t is_mouse;
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uint16_t max_packet_size_rx;
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uint16_t max_packet_size_tx;
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};
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typedef struct _wiiu_event_list wiiu_event_list;
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typedef struct _wiiu_adapter_list wiiu_adapter_list;
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struct _wiiu_event_list {
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OSFastMutex lock;
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wiiu_attach_event *list;
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};
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struct _wiiu_adapter_list {
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OSFastMutex lock;
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wiiu_adapter_t *list;
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};
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static void *alloc_zeroed(size_t alignment, size_t size);
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static OSThread *new_thread(void);
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static wiiu_hid_t *new_hid(void);
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static void delete_hid(wiiu_hid_t *hid);
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static void delete_hidclient(HIDClient *client);
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static HIDClient *new_hidclient(void);
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static wiiu_adapter_t *new_adapter(wiiu_attach_event *event);
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static void delete_adapter(wiiu_adapter_t *adapter);
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static wiiu_attach_event *new_attach_event(HIDDevice *device);
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static void delete_attach_event(wiiu_attach_event *);
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static void wiiu_hid_init_lists(void);
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static void start_polling_thread(wiiu_hid_t *hid);
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static void stop_polling_thread(wiiu_hid_t *hid);
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static int wiiu_hid_polling_thread(int argc, const char **argv);
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static int32_t wiiu_attach_callback(HIDClient *client, HIDDevice *device, uint32_t attach);
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static wiiu_attach_event *synchronized_get_events_list(void);
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static void wiiu_handle_attach_events(wiiu_hid_t *hid, wiiu_attach_event *list);
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static void wiiu_hid_attach(wiiu_hid_t *hid, wiiu_attach_event *event);
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static void wiiu_hid_detach(wiiu_hid_t *hid, wiiu_attach_event *event);
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static void synchronized_add_to_adapters_list(wiiu_adapter_t *adapter);
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static void synchronized_add_event(wiiu_attach_event *event);
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static void wiiu_start_read_loop(wiiu_adapter_t *adapter);
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static void wiiu_hid_read_loop_callback(uint32_t handle, int32_t error,
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uint8_t *buffer, uint32_t buffer_size, void *userdata);
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static void wiiu_hid_polling_thread_cleanup(OSThread *thread, void *stack);
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#endif // __WIIU_HID__H
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