271 lines
6.5 KiB
C
271 lines
6.5 KiB
C
/*
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* wiiuse
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*
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* Written By:
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* Michael Laforest < para >
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* Email: < thepara (--AT--) g m a i l [--DOT--] com >
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*
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* Copyright 2006-2007
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*
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* This file is part of wiiuse.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* 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
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* $Header$
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*
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*/
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/**
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* @file
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* @brief Handles device I/O for *nix.
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*/
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#ifndef WIN32
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <bluetooth/bluetooth.h>
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#include <bluetooth/hci.h>
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#include <bluetooth/hci_lib.h>
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#include <bluetooth/l2cap.h>
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#include "definitions.h"
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#include "wiiuse_internal.h"
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#include "io.h"
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static int wiiuse_connect_single(struct wiimote_t* wm, char* address);
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/**
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* @brief Find a wiimote or wiimotes.
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*
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* @param wm An array of wiimote_t structures.
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* @param max_wiimotes The number of wiimote structures in \a wm.
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* @param timeout The number of seconds before the search times out.
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*
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* @return The number of wiimotes found.
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*
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* @see wiimote_connect()
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*
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* This function will only look for wiimote devices. \n
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* When a device is found the address in the structures will be set. \n
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* You can then call wiimote_connect() to connect to the found \n
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* devices.
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*/
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int wiiuse_find(struct wiimote_t** wm, int max_wiimotes, int timeout) {
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int device_id;
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int device_sock;
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int found_devices;
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int found_wiimotes;
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/* reset all wiimote bluetooth device addresses */
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for (found_wiimotes = 0; found_wiimotes < max_wiimotes; ++found_wiimotes)
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wm[found_wiimotes]->bdaddr = *BDADDR_ANY;
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found_wiimotes = 0;
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/* get the id of the first bluetooth device. */
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device_id = hci_get_route(NULL);
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if (device_id < 0) {
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perror("hci_get_route");
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return 0;
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}
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/* create a socket to the device */
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device_sock = hci_open_dev(device_id);
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if (device_sock < 0) {
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perror("hci_open_dev");
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return 0;
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}
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inquiry_info scan_info_arr[128];
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inquiry_info* scan_info = scan_info_arr;
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memset(&scan_info_arr, 0, sizeof(scan_info_arr));
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/* scan for bluetooth devices for 'timeout' seconds */
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found_devices = hci_inquiry(device_id, timeout, 128, NULL, &scan_info, IREQ_CACHE_FLUSH);
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if (found_devices < 0) {
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perror("hci_inquiry");
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return 0;
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}
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WIIUSE_INFO("Found %i bluetooth device(s).", found_devices);
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int i = 0;
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/* display discovered devices */
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for (; (i < found_devices) && (found_wiimotes < max_wiimotes); ++i) {
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if ((scan_info[i].dev_class[0] == WM_DEV_CLASS_0) &&
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(scan_info[i].dev_class[1] == WM_DEV_CLASS_1) &&
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(scan_info[i].dev_class[2] == WM_DEV_CLASS_2))
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{
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/* found a device */
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ba2str(&scan_info[i].bdaddr, wm[found_wiimotes]->bdaddr_str);
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WIIUSE_INFO("Found wiimote (%s) [id %i].", wm[found_wiimotes]->bdaddr_str, wm[found_wiimotes]->unid);
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wm[found_wiimotes]->bdaddr = scan_info[i].bdaddr;
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WIIMOTE_ENABLE_STATE(wm[found_wiimotes], WIIMOTE_STATE_DEV_FOUND);
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++found_wiimotes;
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}
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}
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close(device_sock);
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return found_wiimotes;
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}
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/**
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* @brief Connect to a wiimote or wiimotes once an address is known.
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*
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* @param wm An array of wiimote_t structures.
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* @param wiimotes The number of wiimote structures in \a wm.
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*
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* @return The number of wiimotes that successfully connected.
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*
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* @see wiiuse_find()
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* @see wiiuse_connect_single()
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* @see wiiuse_disconnect()
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*
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* Connect to a number of wiimotes when the address is already set
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* in the wiimote_t structures. These addresses are normally set
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* by the wiiuse_find() function, but can also be set manually.
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*/
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int wiiuse_connect(struct wiimote_t** wm, int wiimotes) {
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int connected = 0;
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int i = 0;
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for (; i < wiimotes; ++i) {
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if (!WIIMOTE_IS_SET(wm[i], WIIMOTE_STATE_DEV_FOUND))
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/* if the device address is not set, skip it */
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continue;
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if (wiiuse_connect_single(wm[i], NULL))
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++connected;
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}
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return connected;
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}
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/**
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* @brief Connect to a wiimote with a known address.
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*
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* @param wm Pointer to a wiimote_t structure.
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* @param address The address of the device to connect to.
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* If NULL, use the address in the struct set by wiiuse_find().
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*
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* @return 1 on success, 0 on failure
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*/
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static int wiiuse_connect_single(struct wiimote_t* wm, char* address) {
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struct sockaddr_l2 addr;
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if (!wm || WIIMOTE_IS_CONNECTED(wm))
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return 0;
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addr.l2_family = AF_BLUETOOTH;
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if (address)
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/* use provided address */
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str2ba(address, &addr.l2_bdaddr);
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else
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/* use address of device discovered */
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addr.l2_bdaddr = wm->bdaddr;
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/*
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* OUTPUT CHANNEL
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*/
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wm->out_sock = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
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if (wm->out_sock == -1)
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return 0;
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addr.l2_psm = htobs(WM_OUTPUT_CHANNEL);
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/* connect to wiimote */
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if (connect(wm->out_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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perror("connect() output sock");
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return 0;
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}
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/*
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* INPUT CHANNEL
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*/
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wm->in_sock = socket(AF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
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if (wm->in_sock == -1) {
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close(wm->out_sock);
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wm->out_sock = -1;
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return 0;
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}
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addr.l2_psm = htobs(WM_INPUT_CHANNEL);
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/* connect to wiimote */
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if (connect(wm->in_sock, (struct sockaddr*)&addr, sizeof(addr)) < 0) {
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perror("connect() interrupt sock");
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close(wm->out_sock);
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wm->out_sock = -1;
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return 0;
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}
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WIIUSE_INFO("Connected to wiimote [id %i].", wm->unid);
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/* do the handshake */
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WIIMOTE_ENABLE_STATE(wm, WIIMOTE_STATE_CONNECTED);
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wiiuse_handshake(wm, NULL, 0);
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wiiuse_set_report_type(wm);
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return 1;
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}
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/**
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* @brief Disconnect a wiimote.
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*
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* @param wm Pointer to a wiimote_t structure.
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*
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* @see wiiuse_connect()
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*
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* Note that this will not free the wiimote structure.
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*/
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void wiiuse_disconnect(struct wiimote_t* wm) {
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if (!wm || WIIMOTE_IS_CONNECTED(wm))
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return;
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close(wm->out_sock);
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close(wm->in_sock);
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wm->out_sock = -1;
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wm->in_sock = -1;
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wm->event = WIIUSE_NONE;
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WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_CONNECTED);
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WIIMOTE_DISABLE_STATE(wm, WIIMOTE_STATE_HANDSHAKE);
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}
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int wiiuse_io_read(struct wiimote_t* wm) {
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/* not used */
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return 0;
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}
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int wiiuse_io_write(struct wiimote_t* wm, byte* buf, int len) {
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return write(wm->out_sock, buf, len);
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}
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#endif /* ifndef WIN32 */
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