mirror of https://github.com/VDR4Arch/vdr.git
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/*
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* lirc.c: LIRC remote control
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* LIRC support added by Carsten Koch <Carsten.Koch@icem.de> 2000-06-16.
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*
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* $Id: lirc.c 1.14 2006/01/27 15:59:47 kls Exp $
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*/
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#include "lirc.h"
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#include <netinet/in.h>
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#include <sys/socket.h>
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#define REPEATLIMIT 20 // ms
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#define REPEATDELAY 350 // ms
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#define KEYPRESSDELAY 150 // ms
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#define RECONNECTDELAY 3000 // ms
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cLircRemote::cLircRemote(const char *DeviceName)
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:cRemote("LIRC")
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,cThread("LIRC remote control")
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{
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, DeviceName);
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if (Connect()) {
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Start();
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return;
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}
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f = -1;
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}
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cLircRemote::~cLircRemote()
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{
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int fh = f;
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f = -1;
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Cancel();
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if (fh >= 0)
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close(fh);
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}
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bool cLircRemote::Connect(void)
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{
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if ((f = socket(AF_UNIX, SOCK_STREAM, 0)) >= 0) {
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if (connect(f, (struct sockaddr *)&addr, sizeof(addr)) >= 0)
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return true;
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LOG_ERROR_STR(addr.sun_path);
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close(f);
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f = -1;
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}
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else
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LOG_ERROR_STR(addr.sun_path);
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return false;
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}
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bool cLircRemote::Ready(void)
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{
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return f >= 0;
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}
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void cLircRemote::Action(void)
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{
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cTimeMs FirstTime;
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cTimeMs LastTime;
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char buf[LIRC_BUFFER_SIZE];
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char LastKeyName[LIRC_KEY_BUF] = "";
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bool repeat = false;
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int timeout = -1;
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while (Running() && f >= 0) {
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bool ready = cFile::FileReady(f, timeout);
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int ret = ready ? safe_read(f, buf, sizeof(buf)) : -1;
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if (ready && ret <= 0 ) {
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esyslog("ERROR: lircd connection broken, trying to reconnect every %.1f seconds", float(RECONNECTDELAY) / 1000);
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close(f);
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f = -1;
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while (Running() && f < 0) {
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cCondWait::SleepMs(RECONNECTDELAY);
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if (Connect()) {
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isyslog("reconnected to lircd");
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break;
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}
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}
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}
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if (ready && ret > 21) {
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int count;
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char KeyName[LIRC_KEY_BUF];
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if (sscanf(buf, "%*x %x %29s", &count, KeyName) != 2) { // '29' in '%29s' is LIRC_KEY_BUF-1!
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esyslog("ERROR: unparseable lirc command: %s", buf);
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continue;
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}
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if (count == 0) {
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if (strcmp(KeyName, LastKeyName) == 0 && FirstTime.Elapsed() < KEYPRESSDELAY)
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continue; // skip keys coming in too fast
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if (repeat)
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Put(LastKeyName, false, true);
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strcpy(LastKeyName, KeyName);
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repeat = false;
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FirstTime.Set();
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timeout = -1;
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}
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else {
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if (FirstTime.Elapsed() < REPEATDELAY)
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continue; // repeat function kicks in after a short delay
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repeat = true;
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timeout = REPEATDELAY;
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}
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LastTime.Set();
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Put(KeyName, repeat);
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}
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else if (repeat) { // the last one was a repeat, so let's generate a release
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if (LastTime.Elapsed() >= REPEATDELAY) {
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Put(LastKeyName, false, true);
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repeat = false;
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*LastKeyName = 0;
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timeout = -1;
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}
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}
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}
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}
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