mirror of
https://github.com/libretro/RetroArch.git
synced 2024-11-29 03:00:24 +00:00
270 lines
6.4 KiB
C
270 lines
6.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2016 - 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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#ifdef _WIN32
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#include <direct.h>
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#else
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#include <unistd.h>
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#endif
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#include <compat/strl.h>
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#include <compat/posix_string.h>
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#include <file/file_path.h>
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#include <retro_miscellaneous.h>
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#include <net/net_compat.h>
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#include <net/net_socket.h>
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#ifdef HAVE_CONFIG_H
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#include "../config.h"
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#endif
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#include "input_remote.h"
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#include "../configuration.h"
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#include "../msg_hash.h"
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#include "../verbosity.h"
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#define DEFAULT_NETWORK_GAMEPAD_PORT 55400
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#define UDP_FRAME_PACKETS 16
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struct remote_message
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{
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int port;
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int device;
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int index;
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int id;
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uint16_t state;
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};
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struct input_remote
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{
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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int net_fd[MAX_USERS];
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#endif
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bool state[RARCH_BIND_LIST_END];
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};
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typedef struct input_remote_state
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{
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/* This is a bitmask of (1 << key_bind_id). */
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uint64_t buttons[MAX_USERS];
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/* Left X, Left Y, Right X, Right Y */
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int16_t analog[4][MAX_USERS];
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} input_remote_state_t;
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static input_remote_state_t remote_st_ptr;
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static input_remote_state_t *input_remote_get_state_ptr(void)
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{
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return &remote_st_ptr;
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}
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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static bool input_remote_init_network(input_remote_t *handle,
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uint16_t port, unsigned user)
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{
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int fd;
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struct addrinfo *res = NULL;
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port = port + user;
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if (!network_init())
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return false;
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RARCH_LOG("Bringing up remote interface on port %hu.\n",
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(unsigned short)port);
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fd = socket_init((void**)&res, port, NULL, SOCKET_TYPE_DATAGRAM);
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if (fd < 0)
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goto error;
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handle->net_fd[user] = fd;
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if (!socket_nonblock(handle->net_fd[user]))
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goto error;
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if (!socket_bind(handle->net_fd[user], res))
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{
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RARCH_ERR("%s\n", msg_hash_to_str(MSG_FAILED_TO_BIND_SOCKET));
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goto error;
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}
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freeaddrinfo_retro(res);
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return true;
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error:
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if (res)
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freeaddrinfo_retro(res);
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return false;
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}
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#endif
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input_remote_t *input_remote_new(uint16_t port)
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{
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unsigned user;
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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settings_t *settings = config_get_ptr();
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#endif
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input_remote_t *handle = (input_remote_t*)
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calloc(1, sizeof(*handle));
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if (!handle)
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return NULL;
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(void)port;
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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for(user = 0; user < settings->input.max_users; user ++)
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{
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handle->net_fd[user] = -1;
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if(settings->network_remote_enable_user[user])
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if (!input_remote_init_network(handle, port, user))
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goto error;
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}
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#endif
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return handle;
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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error:
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input_remote_free(handle);
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return NULL;
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#endif
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}
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void input_remote_free(input_remote_t *handle)
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{
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unsigned user;
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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settings_t *settings = config_get_ptr();
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for(user = 0; user < settings->input.max_users; user ++)
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socket_close(handle->net_fd[user]);
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#endif
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free(handle);
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}
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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static void input_remote_parse_packet(struct remote_message *msg, unsigned user)
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{
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input_remote_state_t *ol_state = input_remote_get_state_ptr();
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/* Parse message */
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switch (msg->device)
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{
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case RETRO_DEVICE_JOYPAD:
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ol_state->buttons[user] &= ~(1 << msg->id);
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if (msg->state)
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ol_state->buttons[user] |= 1 << msg->id;
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break;
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case RETRO_DEVICE_ANALOG:
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ol_state->analog[msg->index * 2 + msg->id][user] = msg->state;
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break;
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}
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}
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#endif
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void input_remote_state(
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int16_t *ret,
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unsigned port,
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unsigned device,
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unsigned idx,
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unsigned id)
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{
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input_remote_state_t *ol_state = input_remote_get_state_ptr();
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if (!ol_state)
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return;
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switch (device)
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{
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case RETRO_DEVICE_JOYPAD:
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if (input_remote_key_pressed(id, port))
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*ret |= 1;
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break;
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case RETRO_DEVICE_ANALOG:
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{
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unsigned base = 0;
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if (idx == RETRO_DEVICE_INDEX_ANALOG_RIGHT)
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base = 2;
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if (id == RETRO_DEVICE_ID_ANALOG_Y)
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base += 1;
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if (ol_state && ol_state->analog[base][port])
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*ret = ol_state->analog[base][port];
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}
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break;
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}
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}
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bool input_remote_key_pressed(int key, unsigned port)
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{
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input_remote_state_t *ol_state = input_remote_get_state_ptr();
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if (!ol_state)
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return false;
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return (ol_state->buttons[port] & (UINT64_C(1) << key));
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}
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void input_remote_poll(input_remote_t *handle)
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{
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unsigned user;
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settings_t *settings = config_get_ptr();
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input_remote_state_t *ol_state = input_remote_get_state_ptr();
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for(user = 0; user < settings->input.max_users; user++)
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{
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if (settings->network_remote_enable_user[user])
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{
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#if defined(HAVE_NETWORKING) && defined(HAVE_NETWORKGAMEPAD)
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struct remote_message msg;
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ssize_t ret;
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fd_set fds;
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if (handle->net_fd[user] < 0)
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return;
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FD_ZERO(&fds);
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FD_SET(handle->net_fd[user], &fds);
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ret = recvfrom(handle->net_fd[user], (char*)&msg,
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sizeof(msg), 0, NULL, NULL);
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if (ret == sizeof(msg))
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input_remote_parse_packet(&msg, user);
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else if ((ret != -1) || ((errno != EAGAIN) && (errno != ENOENT)))
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#endif
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{
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ol_state->buttons[user] = 0;
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ol_state->analog[0][user] = 0;
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ol_state->analog[1][user] = 0;
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ol_state->analog[2][user] = 0;
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ol_state->analog[3][user] = 0;
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}
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}
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}
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}
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