/* * lirc.c: LIRC remote control * * See the main source file 'vdr.c' for copyright information and * how to reach the author. * * LIRC support added by Carsten Koch 2000-06-16. * * $Id: lirc.c 2.5.1.2 2013/10/29 16:06:20 kls Exp $ */ #include "lirc.h" #include #include #define RECONNECTDELAY 3000 // ms cLircRemote::cLircRemote(const char *DeviceName) :cRemote("LIRC") ,cThread("LIRC remote control") { addr.sun_family = AF_UNIX; strcpy(addr.sun_path, DeviceName); if (!Connect()) f = -1; Start(); } cLircRemote::~cLircRemote() { int fh = f; f = -1; Cancel(); if (fh >= 0) close(fh); } bool cLircRemote::Connect(void) { if ((f = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0) { if (connect(f, (struct sockaddr *)&addr, sizeof(addr)) >= 0) return true; LOG_ERROR_STR(addr.sun_path); close(f); f = -1; } else LOG_ERROR_STR(addr.sun_path); return false; } bool cLircRemote::Ready(void) { return f >= 0; } void cLircRemote::Action(void) { cTimeMs FirstTime; cTimeMs LastTime; cTimeMs ThisTime; char buf[LIRC_BUFFER_SIZE]; char LastKeyName[LIRC_KEY_BUF] = ""; bool pressed = false; bool repeat = false; int timeout = -1; while (Running()) { bool ready = f >= 0 && cFile::FileReady(f, timeout); int ret = ready ? safe_read(f, buf, sizeof(buf)) : -1; if (f < 0 || ready && ret <= 0) { esyslog("ERROR: lircd connection broken, trying to reconnect every %.1f seconds", float(RECONNECTDELAY) / 1000); if (f >= 0) close(f); f = -1; while (Running() && f < 0) { cCondWait::SleepMs(RECONNECTDELAY); if (Connect()) { isyslog("reconnected to lircd"); break; } } } if (ready && ret > 0) { buf[ret - 1] = 0; int count; char KeyName[LIRC_KEY_BUF]; if (sscanf(buf, "%*x %x %29s", &count, KeyName) != 2) { // '29' in '%29s' is LIRC_KEY_BUF-1! esyslog("ERROR: unparseable lirc command: %s", buf); continue; } int Delta = ThisTime.Elapsed(); // the time between two subsequent LIRC events ThisTime.Set(); if (count == 0) { if (strcmp(KeyName, LastKeyName) == 0 && FirstTime.Elapsed() < (uint)Setup.RcRepeatDelay) continue; // skip keys coming in too fast if (repeat) Put(LastKeyName, false, true); strcpy(LastKeyName, KeyName); pressed = true; repeat = false; FirstTime.Set(); timeout = -1; } else if (FirstTime.Elapsed() < (uint)Setup.RcRepeatDelay) continue; // repeat function kicks in after a short delay else if (LastTime.Elapsed() < (uint)Setup.RcRepeatDelta) continue; // skip same keys coming in too fast else { pressed = true; repeat = true; timeout = Delta * 10 / 9; } if (pressed) { LastTime.Set(); Put(KeyName, repeat); } } else if (pressed && repeat) { // the last one was a repeat, so let's generate a release Put(LastKeyName, false, true); pressed = false; repeat = false; *LastKeyName = 0; timeout = -1; } else { pressed = false; repeat = false; *LastKeyName = 0; timeout = -1; } } }