7935c687c7
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@12415 178a84e3-b1eb-0310-8ba1-8eac791a3b58
388 lines
9.1 KiB
C
388 lines
9.1 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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#include "io.h"
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#include "events.h"
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#include "os.h"
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#ifdef WIIUSE_BLUEZ
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#include <bluetooth/bluetooth.h> /* for ba2str, str2ba */
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#include <bluetooth/hci.h> /* for inquiry_info */
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#include <bluetooth/hci_lib.h> /* for hci_get_route, hci_inquiry, etc */
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#include <bluetooth/l2cap.h> /* for sockaddr_l2 */
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#include <stdio.h> /* for perror */
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#include <string.h> /* for memset */
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#include <sys/socket.h> /* for connect, socket */
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#include <sys/time.h> /* for struct timeval */
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#include <unistd.h> /* for close, write */
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#include <errno.h>
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static int wiiuse_os_connect_single(struct wiimote_t* wm, char* address);
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int wiiuse_os_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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inquiry_info scan_info_arr[128];
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inquiry_info* scan_info = scan_info_arr;
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int found_devices;
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int found_wiimotes;
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int i = 0;
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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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/* bacpy(&(wm[found_wiimotes]->bdaddr), BDADDR_ANY); */
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memset(&(wm[found_wiimotes]->bdaddr), 0, sizeof(bdaddr_t));
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}
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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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if (errno == ENODEV) {
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WIIUSE_ERROR("Could not detect a Bluetooth adapter!");
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} else {
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perror("hci_get_route");
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}
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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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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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/* display discovered devices */
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for (i = 0; (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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/* 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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* @see wiiuse_connect()
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* @see wiiuse_os_connect_single()
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*/
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int wiiuse_os_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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{
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continue;
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}
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if (wiiuse_os_connect_single(wm[i], NULL)) {
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++connected;
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}
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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_os_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_os_connect_single(struct wiimote_t* wm, char* address) {
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struct sockaddr_l2 addr;
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memset(&addr, 0, sizeof(addr));
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if (!wm || WIIMOTE_IS_CONNECTED(wm)) {
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return 0;
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}
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addr.l2_family = AF_BLUETOOTH;
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bdaddr_t *bdaddr = &wm->bdaddr;
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if (address)
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/* use provided address */
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{
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str2ba(address, &addr.l2_bdaddr);
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} else {
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/** @todo this line doesn't make sense
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bacmp(bdaddr, BDADDR_ANY);*/
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/* use address of device discovered */
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addr.l2_bdaddr = *bdaddr;
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}
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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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}
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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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void wiiuse_os_disconnect(struct wiimote_t* wm) {
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if (!wm || WIIMOTE_IS_CONNECTED(wm)) {
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return;
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}
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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_os_poll(struct wiimote_t** wm, int wiimotes) {
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int evnt;
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struct timeval tv;
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fd_set fds;
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int r;
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int i;
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byte read_buffer[MAX_PAYLOAD];
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int highest_fd = -1;
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evnt = 0;
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if (!wm) {
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return 0;
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}
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/* block select() for 1/2000th of a second */
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tv.tv_sec = 0;
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tv.tv_usec = 500;
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FD_ZERO(&fds);
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for (i = 0; i < wiimotes; ++i) {
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/* only poll it if it is connected */
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if (WIIMOTE_IS_SET(wm[i], WIIMOTE_STATE_CONNECTED)) {
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FD_SET(wm[i]->in_sock, &fds);
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/* find the highest fd of the connected wiimotes */
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if (wm[i]->in_sock > highest_fd) {
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highest_fd = wm[i]->in_sock;
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}
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}
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wm[i]->event = WIIUSE_NONE;
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}
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if (highest_fd == -1)
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/* nothing to poll */
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{
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return 0;
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}
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if (select(highest_fd + 1, &fds, NULL, NULL, &tv) == -1) {
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WIIUSE_ERROR("Unable to select() the wiimote interrupt socket(s).");
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perror("Error Details");
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return 0;
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}
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/* check each socket for an event */
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for (i = 0; i < wiimotes; ++i) {
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/* if this wiimote is not connected, skip it */
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if (!WIIMOTE_IS_CONNECTED(wm[i])) {
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continue;
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}
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if (FD_ISSET(wm[i]->in_sock, &fds)) {
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/* clear out the event buffer */
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memset(read_buffer, 0, sizeof(read_buffer));
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/* clear out any old read data */
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clear_dirty_reads(wm[i]);
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/* read the pending message into the buffer */
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r = wiiuse_os_read(wm[i], read_buffer, sizeof(read_buffer));
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if (r > 0) {
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/* propagate the event */
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propagate_event(wm[i], read_buffer[0], read_buffer + 1);
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evnt += (wm[i]->event != WIIUSE_NONE);
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}
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} else {
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/* send out any waiting writes */
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wiiuse_send_next_pending_write_request(wm[i]);
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idle_cycle(wm[i]);
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}
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}
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return evnt;
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}
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int wiiuse_os_read(struct wiimote_t* wm, byte* buf, int len) {
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int rc;
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int i;
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rc = read(wm->in_sock, buf, len);
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if (rc == -1) {
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/* error reading data */
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WIIUSE_ERROR("Receiving wiimote data (id %i).", wm->unid);
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perror("Error Details");
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if (errno == ENOTCONN) {
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/* this can happen if the bluetooth dongle is disconnected */
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WIIUSE_ERROR("Bluetooth appears to be disconnected. Wiimote unid %i will be disconnected.", wm->unid);
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wiiuse_os_disconnect(wm);
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wiiuse_disconnected(wm);
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}
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} else if (rc == 0) {
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/* remote disconnect */
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wiiuse_disconnected(wm);
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} else {
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/* read successful */
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/* on *nix we ignore the first byte */
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memmove(buf, buf + 1, len - 1);
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/* log the received data */
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#ifdef WITH_WIIUSE_DEBUG
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{
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int i;
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printf("[DEBUG] (id %i) RECV: (%.2x) ", wm->unid, buf[0]);
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for (i = 1; i < rc; i++) {
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printf("%.2x ", buf[i]);
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}
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printf("\n");
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}
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#endif
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}
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return rc;
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}
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int wiiuse_os_write(struct wiimote_t* wm, byte report_type, byte* buf, int len) {
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int rc;
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byte write_buffer[MAX_PAYLOAD];
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write_buffer[0] = WM_SET_REPORT | WM_BT_OUTPUT;
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write_buffer[1] = report_type;
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memcpy(write_buffer + 2, buf, len);
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rc = write(wm->out_sock, write_buffer, len + 2);
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if (rc < 0) {
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wiiuse_disconnected(wm);
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}
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return rc;
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}
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void wiiuse_init_platform_fields(struct wiimote_t* wm) {
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memset(&(wm->bdaddr), 0, sizeof(bdaddr_t)); /* = *BDADDR_ANY;*/
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wm->out_sock = -1;
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wm->in_sock = -1;
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}
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void wiiuse_cleanup_platform_fields(struct wiimote_t* wm) {
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wm->out_sock = -1;
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wm->in_sock = -1;
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}
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#endif /* ifdef WIIUSE_BLUEZ */
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