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/*
* xine_frontend_lirc.c
*
* Forward (local) lirc keys to VDR (server)
*
*
* Almost directly copied from vdr-1.4.3-2 (lirc.c : cLircRemote)
*
* $Id: xine_frontend_lirc.c,v 1.4 2006-12-19 08:48:27 phintuka Exp $
*
*/
#include <stdint.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/un.h>
#define REPEATDELAY 350 /* ms */
#define REPEATFREQ 100 /* ms */
#define REPEATTIMEOUT 500 /* ms */
#define RECONNECTDELAY 3000 /* ms */
#define LIRC_KEY_BUF 30
#define LIRC_BUFFER_SIZE 128
#define MIN_LIRCD_CMD_LEN 5
/* static data */
static pthread_t lirc_thread;
static volatile char *lirc_device_name = NULL;
static volatile int fd_lirc = -1;
static int lirc_repeat_emu = 0;
static uint64_t time_ms()
{
struct timeval t;
if (gettimeofday(&t, NULL) == 0)
return ((uint64_t)t.tv_sec) * 1000ULL + t.tv_usec / 1000ULL;
return 0;
}
static uint64_t elapsed(uint64_t t)
{
return time_ms() - t;
}
static void lircd_connect(void)
{
struct sockaddr_un addr;
if(fd_lirc >= 0) {
close(fd_lirc);
fd_lirc = -1;
}
if(!lirc_device_name) {
LOGDBG("no lirc device given");
return;
}
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, (char*)lirc_device_name);
if ((fd_lirc = socket(AF_UNIX, SOCK_STREAM, 0)) < 0) {
LOGERR("lirc error: socket() < 0");
return;
}
if (connect(fd_lirc, (struct sockaddr *)&addr, sizeof(addr))) {
LOGERR("lirc error: connect(%s) < 0", lirc_device_name);
close(fd_lirc);
fd_lirc = -1;
return;
}
}
void *lirc_receiver_thread(void *fe)
{
int timeout = -1;
uint64_t FirstTime = time_ms();
uint64_t LastTime = time_ms();
char buf[LIRC_BUFFER_SIZE];
char LastKeyName[LIRC_KEY_BUF] = "";
int repeat = 0;
LOGMSG("lirc forwarding started");
nice(-1);
lircd_connect();
while(lirc_device_name && fd_lirc >= 0) {
fd_set set;
int ready, ret = -1;
FD_ZERO(&set);
FD_SET(fd_lirc, &set);
if (timeout >= 0) {
struct timeval tv;
#if 0
if(TimeoutMs < 100)
TimeoutMs = 100;
#endif
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
ready = select(FD_SETSIZE, &set, NULL, NULL, &tv) > 0 && FD_ISSET(fd_lirc, &set);
} else {
ready = select(FD_SETSIZE, &set, NULL, NULL, NULL) > 0 && FD_ISSET(fd_lirc, &set);
}
if(ready < 0) {
LOGMSG("LIRC connection lost ?");
break;
}
if(ready) {
do {
errno = 0;
ret = read(fd_lirc, buf, sizeof(buf));
} while(ret < 0 && errno == EINTR);
if (ret <= 0 ) {
/* try reconnecting */
LOGERR("LIRC connection lost");
lircd_connect();
while(lirc_device_name && fd_lirc < 0) {
sleep(RECONNECTDELAY/1000);
lircd_connect();
}
if(fd_lirc >= 0)
LOGMSG("LIRC reconnected");
continue;
}
if (ret >= MIN_LIRCD_CMD_LEN) {
unsigned int count;
char KeyName[LIRC_KEY_BUF];
LOGDBG("LIRC: %s", buf);
if (sscanf(buf, "%*x %x %29s", &count, KeyName) != 2) {
/* '29' in '%29s' is LIRC_KEY_BUF-1! */
LOGMSG("unparseable lirc command: %s", buf);
continue;
}
if(lirc_repeat_emu)
if (strcmp(KeyName, LastKeyName) == 0 && elapsed(LastTime) < REPEATDELAY)
count = repeat + 1;
if (count == 0) {
if (strcmp(KeyName, LastKeyName) == 0 && elapsed(FirstTime) < REPEATDELAY)
continue; /* skip keys coming in too fast */
if (repeat)
if(find_input((fe_t*)fe))
process_xine_keypress(((fe_t*)fe)->input, "LIRC", LastKeyName, 0, 1);
/* Put(LastKeyName, false, true); code, repeat, release */
strcpy(LastKeyName, KeyName);
repeat = 0;
FirstTime = time_ms();
timeout = -1;
}
else {
if (elapsed(LastTime) < REPEATFREQ)
continue; /* repeat function kicks in after a short delay */
if (elapsed(FirstTime) < REPEATDELAY) {
if(lirc_repeat_emu)
LastTime = time_ms();
continue; /* skip keys coming in too fast */
}
repeat = 1;
timeout = REPEATDELAY;
}
LastTime = time_ms();
if(find_input((fe_t*)fe))
process_xine_keypress(((fe_t*)fe)->input, "LIRC", KeyName, repeat, 0);
/*Put(KeyName, repeat);*/
}
else if (repeat) { /* the last one was a repeat, so let's generate a release */
if (elapsed(LastTime) >= REPEATTIMEOUT) {
if(find_input((fe_t*)fe))
process_xine_keypress(((fe_t*)fe)->input, "LIRC", LastKeyName, 0, 1);
/* Put(LastKeyName, false, true); */
repeat = 0;
*LastKeyName = 0;
timeout = -1;
}
}
}
}
if(fd_lirc >= 0)
close(fd_lirc);
fd_lirc = -1;
pthread_exit(NULL);
return NULL; /* never reached */
}
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