mirror of
https://github.com/dolphin-emu/dolphin.git
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439 lines
8.4 KiB
C++
439 lines
8.4 KiB
C++
// Copyright 2013 Dolphin Emulator Project
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// Licensed under GPLv2
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// Refer to the license.txt file included.
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#include <cstdio>
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#include <cstdlib>
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#include <ctime>
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#include <functional>
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#include <list>
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#include <string.h>
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#include "Common/Thread.h"
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#include "Common/Timer.h"
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#include "InputCommon/UDPWiimote.h"
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#ifdef _WIN32
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#define sock_t SOCKET
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#define ERRNO WSAGetLastError()
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#undef EWOULDBLOCK
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#define EWOULDBLOCK WSAEWOULDBLOCK
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#define BAD_SOCK INVALID_SOCKET
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#define close(x) closesocket(x)
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#define cleanup do {noinst--; if (noinst==0) WSACleanup();} while (0)
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#define blockingoff(sock) ioctlsocket(sock, FIONBIO, &iMode)
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#define dataz char*
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#ifdef _MSC_VER
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#pragma comment (lib, "Ws2_32.lib")
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#endif
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#else
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#include <unistd.h>
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <fcntl.h>
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#define BAD_SOCK -1
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#define ERRNO errno
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#define cleanup noinst--
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#define blockingoff(sock) fcntl(sock, F_SETFL, O_NONBLOCK)
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#define dataz void*
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#define sock_t int
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#endif
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struct UDPWiimote::_d
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{
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std::thread thread;
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std::list<sock_t> sockfds;
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std::mutex termLock, mutex, nameMutex;
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volatile bool exit;
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sock_t bipv4_fd, bipv6_fd;
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};
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int UDPWiimote::noinst = 0;
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UDPWiimote::UDPWiimote(const char *_port, const char * name, int _index) :
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port(_port), displayName(name),
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d(new _d) ,x(0),y(0),z(1.0f),naX(0),naY(0),naZ(-1.0f),nunX(0),nunY(0),
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pointerX(1001.0f/2),pointerY(0),nunMask(0),mask(0),index(_index), int_port(atoi(_port))
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{
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static bool sranded=false;
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if (!sranded)
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{
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srand((unsigned int)time(0));
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sranded=true;
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}
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bcastMagic=rand() & 0xFFFF;
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#ifdef _WIN32
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u_long iMode = 1;
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#endif
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struct addrinfo hints, *servinfo, *p;
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int rv;
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#ifdef _WIN32
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if (noinst==0)
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{
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WORD sockVersion;
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WSADATA wsaData;
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sockVersion = MAKEWORD(2, 2);
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WSAStartup(sockVersion, &wsaData);
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}
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#endif
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noinst++;
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memset(&hints, 0, sizeof hints);
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hints.ai_family = AF_INET;
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_flags = AI_PASSIVE; // use my IP
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if (!int_port)
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{
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cleanup;
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err=-1;
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return;
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}
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if ((rv = getaddrinfo(NULL, _port, &hints, &servinfo)) != 0)
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{
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cleanup;
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err=-1;
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return;
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}
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// loop through all the results and bind to everything we can
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for(p = servinfo; p != NULL; p = p->ai_next)
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{
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sock_t sock;
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if ((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == BAD_SOCK)
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{
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continue;
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}
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if (bind(sock, p->ai_addr, (int)p->ai_addrlen) == -1)
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{
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close(sock);
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continue;
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}
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d->sockfds.push_back(sock);
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}
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if (d->sockfds.empty())
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{
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cleanup;
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err=-2;
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return;
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}
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freeaddrinfo(servinfo);
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err=0;
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d->exit=false;
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initBroadcastIPv4();
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initBroadcastIPv6();
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std::lock_guard<std::mutex> lk(d->termLock);
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d->thread = std::thread(std::mem_fun(&UDPWiimote::mainThread), this);
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return;
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}
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void UDPWiimote::mainThread()
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{
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std::unique_lock<std::mutex> lk(d->termLock);
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Common::Timer time;
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fd_set fds;
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struct timeval timeout;
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timeout.tv_sec=0;
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timeout.tv_usec=0;
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time.Update();
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do
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{
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int maxfd=0;
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FD_ZERO(&fds);
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for (auto& fd : d->sockfds)
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{
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FD_SET(fd,&fds);
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#ifndef _WIN32
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if (fd>=maxfd)
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maxfd=(fd)+1;
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#endif
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}
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u64 tleft=timeout.tv_sec*1000+timeout.tv_usec/1000;
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u64 telapsed=time.GetTimeDifference();
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time.Update();
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if (tleft<=telapsed)
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{
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timeout.tv_sec=1;
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timeout.tv_usec=500000;
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broadcastPresence();
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}
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else
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{
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tleft-=telapsed;
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timeout.tv_sec=(long)(tleft/1000);
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timeout.tv_usec=(tleft%1000)*1000;
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}
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lk.unlock(); //VERY hacky. don't like it
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if (d->exit) return;
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int rt=select(maxfd,&fds,NULL,NULL,&timeout);
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if (d->exit) return;
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lk.lock();
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if (d->exit) return;
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if (rt)
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{
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for (sock_t fd : d->sockfds)
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{
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if (FD_ISSET(fd,&fds))
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{
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u8 bf[64];
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int size=60;
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size_t addr_len;
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struct sockaddr_storage their_addr;
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addr_len = sizeof their_addr;
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if ((size = recvfrom(fd,
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(dataz)bf,
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size , 0,(struct sockaddr *)&their_addr, (socklen_t*)&addr_len)) == -1)
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{
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ERROR_LOG(WIIMOTE,"UDPWii Packet error");
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}
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else
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{
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std::lock_guard<std::mutex> lkm(d->mutex);
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if (pharsePacket(bf,size)==0)
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{
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//NOTICE_LOG(WIIMOTE,"UDPWII New pack");
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}
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else
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{
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//NOTICE_LOG(WIIMOTE,"UDPWII Wrong pack format... ignoring");
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}
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}
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}
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}
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}
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} while (!(d->exit));
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}
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UDPWiimote::~UDPWiimote()
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{
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d->exit = true;
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{
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std::lock_guard<std::mutex> lk(d->termLock);
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d->thread.join();
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}
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for (auto& elem : d->sockfds)
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close(elem);
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close(d->bipv4_fd);
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close(d->bipv6_fd);
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cleanup;
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delete d;
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}
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#define ACCEL_FLAG (1 << 0)
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#define BUTT_FLAG (1 << 1)
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#define IR_FLAG (1 << 2)
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#define NUN_FLAG (1 << 3)
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#define NUNACCEL_FLAG (1 << 4)
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int UDPWiimote::pharsePacket(u8 * bf, size_t size)
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{
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if (size < 3)
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return -1;
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if (bf[0] != 0xde)
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return -1;
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//if (bf[1]==0)
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// time=0;
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//if (bf[1]<time) //NOT LONGER NEEDED TO ALLOW MULTIPLE IPHONES ON A SINGLE PORT
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// return -1;
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//time=bf[1];
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u32 *p=(u32*)(&bf[3]);
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if (bf[2] & ACCEL_FLAG)
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{
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if ((size-(((u8*)p)-bf)) < 12)
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return -1;
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double ux,uy,uz;
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ux=(double)((s32)ntohl(*p)); p++;
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uy=(double)((s32)ntohl(*p)); p++;
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uz=(double)((s32)ntohl(*p)); p++;
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x=ux/1048576; //packet accel data
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y=uy/1048576;
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z=uz/1048576;
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}
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if (bf[2] & BUTT_FLAG)
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{
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if ((size-(((u8*)p)-bf)) < 4)
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return -1;
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mask=ntohl(*p); p++;
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}
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if (bf[2] & IR_FLAG)
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{
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if ((size-(((u8*)p)-bf)) < 8)
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return -1;
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pointerX=((double)((s32)ntohl(*p)))/1048576; p++;
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pointerY=((double)((s32)ntohl(*p)))/1048576; p++;
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}
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if (bf[2] & NUN_FLAG)
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{
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if ((size-(((u8*)p)-bf)) < 9)
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return -1;
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nunMask=*((u8*)p); p=(u32*)(((u8*)p)+1);
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nunX=((double)((s32)ntohl(*p)))/1048576; p++;
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nunY=((double)((s32)ntohl(*p)))/1048576; p++;
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}
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if (bf[2] & NUNACCEL_FLAG)
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{
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if ((size-(((u8*)p)-bf)) < 12)
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return -1;
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double ux,uy,uz;
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ux=(double)((s32)ntohl(*p)); p++;
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uy=(double)((s32)ntohl(*p)); p++;
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uz=(double)((s32)ntohl(*p)); p++;
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naX=ux/1048576; //packet accel data
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naY=uy/1048576;
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naZ=uz/1048576;
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}
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return 0;
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}
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void UDPWiimote::initBroadcastIPv4()
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{
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d->bipv4_fd=socket(AF_INET, SOCK_DGRAM, 0);
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if (d->bipv4_fd == BAD_SOCK)
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{
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WARN_LOG(WIIMOTE,"socket() failed");
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return;
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}
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int broad=1;
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if (setsockopt(d->bipv4_fd,SOL_SOCKET,SO_BROADCAST, (const dataz)(&broad), sizeof broad) == -1)
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{
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WARN_LOG(WIIMOTE,"setsockopt(SO_BROADCAST) failed");
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return;
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}
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}
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void UDPWiimote::broadcastIPv4(const void * data, size_t size)
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{
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struct sockaddr_in their_addr;
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their_addr.sin_family = AF_INET;
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their_addr.sin_port = htons(4431);
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their_addr.sin_addr.s_addr = INADDR_BROADCAST;
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memset(their_addr.sin_zero, '\0', sizeof their_addr.sin_zero);
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int num;
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if ((num=sendto(d->bipv4_fd,(const dataz)data,(int)size,0,(struct sockaddr *) &their_addr, sizeof their_addr)) == -1)
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{
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WARN_LOG(WIIMOTE,"sendto() failed");
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return;
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}
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}
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void UDPWiimote::initBroadcastIPv6()
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{
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//TODO: IPv6 support
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}
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void UDPWiimote::broadcastIPv6(const void * data, size_t size)
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{
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//TODO: IPv6 support
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}
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void UDPWiimote::broadcastPresence()
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{
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size_t slen;
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u8 bf[512];
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bf[0]=0xdf; //magic number
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*((u16*)(&(bf[1])))=htons(bcastMagic); //unique per-wiimote 16-bit ID
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bf[3]=(u8)index; //wiimote index
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*((u16*)(&(bf[4])))=htons(int_port); //port
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{
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std::lock_guard<std::mutex> lk(d->nameMutex);
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slen=displayName.size();
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if (slen>=256)
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slen=255;
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bf[6]=(u8)slen; //display name size (max 255)
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memcpy(&(bf[7]),displayName.c_str(),slen); //display name
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}
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broadcastIPv4(bf,7+slen);
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broadcastIPv6(bf,7+slen);
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}
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void UDPWiimote::getAccel(float &_x, float &_y, float &_z)
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{
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std::lock_guard<std::mutex> lk(d->mutex);
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_x=(float)x;
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_y=(float)y;
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_z=(float)z;
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}
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u32 UDPWiimote::getButtons()
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{
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u32 msk;
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std::lock_guard<std::mutex> lk(d->mutex);
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msk=mask;
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return msk;
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}
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void UDPWiimote::getIR(float &_x, float &_y)
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{
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std::lock_guard<std::mutex> lk(d->mutex);
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_x=(float)pointerX;
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_y=(float)pointerY;
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}
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void UDPWiimote::getNunchuck(float &_x, float &_y, u8 &_mask)
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{
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std::lock_guard<std::mutex> lk(d->mutex);
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_x=(float)nunX;
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_y=(float)nunY;
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_mask=nunMask;
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}
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void UDPWiimote::getNunchuckAccel(float &_x, float &_y, float &_z)
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{
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std::lock_guard<std::mutex> lk(d->mutex);
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_x=(float)naX;
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_y=(float)naY;
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_z=(float)naZ;
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}
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const char * UDPWiimote::getPort()
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{
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return port.c_str();
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}
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void UDPWiimote::changeName(const char * name)
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{
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std::lock_guard<std::mutex> lk(d->nameMutex);
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displayName=name;
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}
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