dolphin/Externals/WiiUse/Src/io_nix.c

329 lines
8.2 KiB
C

/*
* wiiuse
*
* Written By:
* Michael Laforest < para >
* Email: < thepara (--AT--) g m a i l [--DOT--] com >
*
* Copyright 2006-2007
*
* This file is part of wiiuse.
*
* 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 <http://www.gnu.org/licenses/>.
*
*/
#include <sys/time.h>
#include <errno.h>
#include <sys/types.h>
#include <stdlib.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/hci.h>
#include <bluetooth/hci_lib.h>
#include <bluetooth/l2cap.h>
#include "definitions.h"
#include "wiiuse_internal.h"
static int wiiuse_connect_single(struct wiimote_t* wm, char* address);
// Find a wiimote or wiimotes.
// Does not replace already found wiimotes even if they are disconnected.
// wm An array of wiimote_t structures.
// max_wiimotes The number of wiimote structures in wm.
// timeout The number of seconds before the search times out.
// Returns the total number of found wiimotes.
// This function will only look for wiimote devices.
// When a device is found the address in the structures will be set.
// You can then call wiimote_connect() to connect to the found devices.
int wiiuse_find(struct wiimote_t** wm, int max_wiimotes, int timeout)
{
int device_id;
int device_sock;
int found_devices;
int found_wiimotes = 0;
int i;
// Count the number of already found wiimotes
for (i = 0; i < max_wiimotes; ++i)
{
if (WIIMOTE_IS_SET(wm[i], WIIMOTE_STATE_DEV_FOUND))
found_wiimotes++;
}
// get the id of the first bluetooth device.
device_id = hci_get_route(NULL);
if (device_id < 0)
{
perror("hci_get_route");
return 0;
}
// create a socket to the device
device_sock = hci_open_dev(device_id);
if (device_sock < 0)
{
perror("hci_open_dev");
return 0;
}
int try_num = 0;
while ((try_num < timeout) && (found_wiimotes < max_wiimotes))
{
inquiry_info scan_info_arr[128];
inquiry_info* scan_info = scan_info_arr;
memset(&scan_info_arr, 0, sizeof(scan_info_arr));
// scan for bluetooth devices for ~one second
found_devices = hci_inquiry(device_id, 1, 128, NULL, &scan_info, IREQ_CACHE_FLUSH);
if (found_devices < 0)
{
perror("hci_inquiry");
return 0;
}
WIIUSE_INFO("Found %i bluetooth device(s).", found_devices);
// display discovered devices
for (i = 0; (i < found_devices) && (found_wiimotes < max_wiimotes); ++i)
{
if ((scan_info[i].dev_class[0] == WM_DEV_CLASS_0) &&
(scan_info[i].dev_class[1] == WM_DEV_CLASS_1) &&
(scan_info[i].dev_class[2] == WM_DEV_CLASS_2))
{
int new_wiimote = 1;
int j;
// Determine if this wiimote has already been found.
for (j = 0; j < found_wiimotes && new_wiimote; ++j)
{
if (WIIMOTE_IS_SET(wm[j], WIIMOTE_STATE_DEV_FOUND) &&
bacmp(&scan_info[i].bdaddr,&wm[j]->bdaddr) == 0)
new_wiimote = 0;
}
if (new_wiimote)
{
// found a new device
ba2str(&scan_info[i].bdaddr, wm[found_wiimotes]->bdaddr_str);
WIIUSE_INFO("Found wiimote (%s) [id %i].",
wm[found_wiimotes]->bdaddr_str, wm[found_wiimotes]->unid);
wm[found_wiimotes]->bdaddr = scan_info[i].bdaddr;
WIIMOTE_ENABLE_STATE(wm[found_wiimotes], WIIMOTE_STATE_DEV_FOUND);
++found_wiimotes;
}
}
}
try_num++;
}
close(device_sock);
return found_wiimotes;
}
// Connect to a wiimote or wiimotes once an address is known.
// wm An array of wiimote_t structures.
// wiimotes The number of wiimote structures in wm.
// Return the number of wiimotes that successfully connected.
// Connect to a number of wiimotes when the address is already set
// in the wiimote_t structures. These addresses are normally set
// by the wiiuse_find() function, but can also be set manually.
int wiiuse_connect(struct wiimote_t** wm, int wiimotes)
{
int connected = 0;
int i = 0;
for (; i < wiimotes; ++i)
{
if (!WIIMOTE_IS_SET(wm[i], WIIMOTE_STATE_DEV_FOUND))
// if the device address is not set, skip it
continue;
if (wiiuse_connect_single(wm[i], NULL))
++connected;
}
return connected;
}
// Connect to a wiimote with a known address.
// wm Pointer to a wiimote_t structure.
// address The address of the device to connect to.
// If NULL, use the address in the struct set by wiiuse_find().
// Return 1 on success, 0 on failure
static int wiiuse_connect_single(struct wiimote_t* wm, char* address)
{
struct sockaddr_l2 addr;
if (!wm || WIIMOTE_IS_CONNECTED(wm))
return 0;
addr.l2_family = AF_BLUETOOTH;
bdaddr_t *bdaddr = &wm->bdaddr;
if (address)
// use provided address
str2ba(address, &addr.l2_bdaddr);
else
{
if (bacmp(bdaddr, BDADDR_ANY) == 0)
return 0;
// use address of device discovered
addr.l2_bdaddr = *bdaddr;
}
// OUTPUT CHANNEL
wm->out_sock = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
if (wm->out_sock == -1)
return 0;
addr.l2_cid = 0;
addr.l2_psm = htobs(WM_OUTPUT_CHANNEL);
// connect to wiimote
if (connect(wm->out_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0)
{
perror("connect() output sock");
return 0;
}
// INPUT CHANNEL
wm->in_sock = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
if (wm->in_sock == -1)
{
close(wm->out_sock);
wm->out_sock = -1;
return 0;
}
addr.l2_psm = htobs(WM_INPUT_CHANNEL);
// connect to wiimote
if (connect(wm->in_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0)
{
perror("connect() interrupt sock");
close(wm->out_sock);
wm->out_sock = -1;
return 0;
}
WIIUSE_INFO("Connected to wiimote [id %i].", wm->unid);
// do the handshake
WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_CONNECTED);
wiiuse_set_report_type(wm);
return 1;
}
// Disconnect a wiimote.
// wm Pointer to a wiimote_t structure.
// Note that this will not free the wiimote structure.
void wiiuse_disconnect(struct wiimote_t* wm)
{
if (!wm || !WIIMOTE_IS_CONNECTED(wm))
return;
close(wm->out_sock);
close(wm->in_sock);
wm->out_sock = -1;
wm->in_sock = -1;
wm->event = WIIUSE_NONE;
WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_CONNECTED);
WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_HANDSHAKE);
}
int wiiuse_io_read(struct wiimote_t* wm)
{
struct timeval tv;
fd_set fds;
int r;
if (!wm)
return 0;
// block select() for 1/2000th of a second
tv.tv_sec = 0;
tv.tv_usec = wm->timeout * 1000; // timeout is in Milliseconds tv_usec is in Microseconds!
FD_ZERO(&fds);
// only poll it if it is connected
if (WIIMOTE_IS_SET(wm, WIIMOTE_STATE_CONNECTED))
{
FD_SET(wm->in_sock, &fds);
//highest_fd = wm[i]->in_sock;
}
else
// nothing to poll
return 0;
if (select(wm->in_sock + 1, &fds, NULL, NULL, &tv) == -1)
{
WIIUSE_ERROR("Unable to select() the wiimote interrupt socket(s).");
perror("Error Details");
return 0;
}
// if this wiimote is not connected, skip it
if (!WIIMOTE_IS_CONNECTED(wm))
return 0;
if (FD_ISSET(wm->in_sock, &fds))
{
//memset(wm->event_buf, 0, sizeof(wm->event_buf));
// read the pending message into the buffer
r = read(wm->in_sock, wm->event_buf, sizeof(wm->event_buf));
if (r == -1)
{
// error reading data
WIIUSE_ERROR("Receiving wiimote data (id %i).", wm->unid);
perror("Error Details");
if (errno == ENOTCONN)
{
// this can happen if the bluetooth dongle is disconnected
WIIUSE_ERROR("Bluetooth appears to be disconnected. Wiimote unid %i will be disconnected.", wm->unid);
wiiuse_disconnect(wm);
wm->event = WIIUSE_UNEXPECTED_DISCONNECT;
}
return 0;
}
if (!r)
{
// remote disconnect
wiiuse_disconnected(wm);
return 0;
}
wm->event_buf[0] = 0xa2; // Make sure it's 0xa2, just in case
return 1;
}
return 0;
}
int wiiuse_io_write(struct wiimote_t* wm, byte* buf, int len)
{
if(buf[0] == 0xa2)
buf[0] = 0x52; // May not be needed. Will be changing/correcting in the next few revisions
return write(wm->out_sock, buf, len);
}