mirror of https://github.com/VDR4Arch/vdr.git
105 lines
2.4 KiB
C
105 lines
2.4 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 1.4 2003/04/12 14:37:17 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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#include <sys/un.h>
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#define REPEATLIMIT 20 // ms
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#define REPEATDELAY 350 // ms
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cLircRemote::cLircRemote(char *DeviceName)
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:cRemote("LIRC")
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{
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struct sockaddr_un addr;
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addr.sun_family = AF_UNIX;
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strcpy(addr.sun_path, DeviceName);
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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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Start();
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return;
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}
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LOG_ERROR_STR(DeviceName);
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close(f);
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}
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else
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LOG_ERROR_STR(DeviceName);
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f = -1;
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}
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cLircRemote::~cLircRemote()
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{
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Cancel();
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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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dsyslog("LIRC remote control thread started (pid=%d)", getpid());
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int FirstTime = 0;
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int LastTime = 0;
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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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for (; f >= 0;) {
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LOCK_THREAD;
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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) {
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if (ret <= 21) {
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esyslog("ERROR: lircd connection lost");
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close(f);
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f = -1;
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break;
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}
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int count;
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char KeyName[LIRC_KEY_BUF];
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sscanf(buf, "%*x %x %29s", &count, KeyName); // '29' in '%29s' is LIRC_KEY_BUF-1!
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int Now = time_ms();
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if (count == 0) {
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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 = Now;
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timeout = -1;
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}
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else {
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if (Now - FirstTime < 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 = Now;
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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 (time_ms() - LastTime >= 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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