inline int get_lead(struct ir_remote *remote)
{
if(remote->plead==0) return 1;
if(!sync_pending_space(remote)) return 0;
set_pending_pulse(remote->plead);
return 1;
}
inline int get_header(struct ir_remote *remote)
{
if (is_rcmm(remote)) {
lirc_t deltap, deltas, sum;
deltap = get_next_pulse(remote->phead);
if (deltap == 0) {
unget_rec_buffer(1);
return (0);
}
deltas = get_next_space(remote->shead);
if (deltas == 0) {
unget_rec_buffer(2);
return (0);
}
sum = deltap + deltas;
if (expect(remote, sum, remote->phead + remote->shead)) {
return (1);
}
unget_rec_buffer(2);
return (0);
} else if (is_bo(remote)) {
if (expectpulse(remote, remote->pone) && expectspace(remote, remote->sone)
&& expectpulse(remote, remote->pone) && expectspace(remote, remote->sone)
&& expectpulse(remote, remote->phead) && expectspace(remote, remote->shead)) {
return 1;
}
return 0;
}
if (remote->shead == 0) {
if (!sync_pending_space(remote))
return 0;
set_pending_pulse(remote->phead);
return 1;
}
if (!expectpulse(remote, remote->phead)) {
unget_rec_buffer(1);
return (0);
}
/* if this flag is set I need a decision now if this is really
a header */
if (remote->flags & NO_HEAD_REP) {
lirc_t deltas;
deltas = get_next_space(remote->shead);
if (deltas != 0) {
if (expect(remote, remote->shead, deltas)) {
return (1);
}
unget_rec_buffer(2);
return (0);
}
}
set_pending_space(remote->shead);
return (1);
}
int expectpulse(struct ir_remote *remote,int exdelta)
{
lirc_t deltap;
int retval;
//LOGPRINTF(5, "expecting pulse: %lu", exdelta);
if(!sync_pending_space(remote)) return 0;
deltap=get_next_pulse(rec_buffer.pendingp+exdelta);
if(deltap==0) return(0);
if(rec_buffer.pendingp>0)
{
if(rec_buffer.pendingp>deltap) return 0;
retval=expect(remote,deltap-rec_buffer.pendingp,exdelta);
if(!retval) return(0);
set_pending_pulse(0);
}
else
{
retval=expect(remote,deltap,exdelta);
}
return(retval);
}
ir_code get_data(struct ir_remote *remote,int bits,int done)
{
ir_code code;
int i;
code=0;
if(is_rcmm(remote))
{
lirc_t deltap,deltas,sum;
if(bits%2 || done%2)
{
return((ir_code) -1);
}
if(!sync_pending_space(remote)) return 0;
for(i=0;i<bits;i+=2)
{
code<<=2;
deltap=get_next_pulse(remote->pzero+remote->pone+
remote->ptwo+remote->pthree);
deltas=get_next_space(remote->szero+remote->sone+
remote->stwo+remote->sthree);
if(deltap==0 || deltas==0)
{
return((ir_code) -1);
}
sum=deltap+deltas;
//LOGPRINTF(3,"rcmm: sum %ld",(unsigned long) sum);
if(expect(remote,sum,remote->pzero+remote->szero))
{
code|=0;
//LOGPRINTF(2,"00");
}
else if(expect(remote,sum,remote->pone+remote->sone))
{
code|=1;
//LOGPRINTF(2,"01");
}
else if(expect(remote,sum,remote->ptwo+remote->stwo))
{
code|=2;
//LOGPRINTF(2,"10");
}
else if(expect(remote,sum,remote->pthree+remote->sthree))
{
code|=3;
//LOGPRINTF(2,"11");
}
else
{
//LOGPRINTF(2,"no match for %d+%d=%d",deltap,deltas,sum);
return((ir_code) -1);
}
}
return(code);
}
else if(is_grundig(remote))
{
lirc_t deltap,deltas,sum;
int state,laststate;
if(bits%2 || done%2)
{
return((ir_code) -1);
}
if(!sync_pending_pulse(remote)) return ((ir_code) -1);
for(laststate=state=-1,i=0;i<bits;)
{
deltas=get_next_space(remote->szero+remote->sone+
remote->stwo+remote->sthree);
deltap=get_next_pulse(remote->pzero+remote->pone+
remote->ptwo+remote->pthree);
if(deltas==0 || deltap==0)
{
return((ir_code) -1);
}
sum=deltas+deltap;
//LOGPRINTF(3,"grundig: sum %ld",(unsigned long) sum);
if(expect(remote,sum,remote->szero+remote->pzero))
{
state=0;
//LOGPRINTF(2,"2T");
}
else if(expect(remote,sum,remote->sone+remote->pone))
{
state=1;
//LOGPRINTF(2,"3T");
}
else if(expect(remote,sum,remote->stwo+remote->ptwo))
{
state=2;
//LOGPRINTF(2,"4T");
}
else if(expect(remote,sum,remote->sthree+remote->pthree))
{
state=3;
//LOGPRINTF(2,"6T");
}
else
{
//LOGPRINTF(2,"no match for %d+%d=%d",deltas,deltap,sum);
return((ir_code) -1);
}
if(state==3) /* 6T */
{
i+=2;code<<=2;state=-1;
code|=0;
}
else if(laststate==2 && state==0) /* 4T2T */
{
i+=2;code<<=2;state=-1;
code|=1;
}
else if(laststate==1 && state==1) /* 3T3T */
{
i+=2;code<<=2;state=-1;
code|=2;
}
else if(laststate==0 && state==2) /* 2T4T */
{
i+=2;code<<=2;state=-1;
code|=3;
}
else if(laststate==-1)
{
/* 1st bit */
}
else
{
return((ir_code) -1);
}
laststate=state;
}
return(code);
}
else if(is_serial(remote))
{
int received;
int space, start_bit, stop_bit, parity_bit;
int parity;
lirc_t delta,origdelta,pending,expecting, gap_delta;
lirc_t base, stop;
lirc_t max_space, max_pulse;
base=1000000/remote->baud;
/* start bit */
set_pending_pulse(base);
received=0;
space=(rec_buffer.pendingp==0); /* expecting space ? */
start_bit=0;
stop_bit=0;
parity_bit=0;
delta=origdelta=0;
stop=base*remote->stop_bits/2;
parity=0;
gap_delta=0;
max_space = remote->sone*remote->bits_in_byte+stop;
max_pulse = remote->pzero*(1+remote->bits_in_byte);
if(remote->parity != IR_PARITY_NONE)
{
parity_bit = 1;
max_space += remote->sone;
max_pulse += remote->pzero;
bits += bits/remote->bits_in_byte;
}
while(received<bits || stop_bit)
{
if(delta==0)
{
delta=space ?
get_next_space(max_space):
get_next_pulse(max_pulse);
if(delta==0 && space &&
received+remote->bits_in_byte+parity_bit>=bits)
{
/* open end */
delta=max_space;
}
origdelta=delta;
}
if(delta==0)
{
//LOGPRINTF(1,"failed before bit %d",received+1);
return((ir_code) -1);
}
pending=(space ?
rec_buffer.pendings:rec_buffer.pendingp);
if(expect(remote, delta, pending))
{
delta=0;
}
else if(delta>pending)
{
delta-=pending;
}
else
{
//LOGPRINTF(1,"failed before bit %d",received+1);
return((ir_code) -1);
}
if(pending>0)
{
if(stop_bit)
{
//LOGPRINTF(5, "delta: %lu", delta);
gap_delta = delta;
delta=0;
set_pending_pulse(base);
set_pending_space(0);
stop_bit=0;
space=0;
//LOGPRINTF(3,"stop bit found");
}
else
{
//LOGPRINTF(3,"pending bit found");
set_pending_pulse(0);
set_pending_space(0);
if(delta==0)
{
space=(space ? 0:1);
}
}
continue;
}
expecting=(space ? remote->sone:remote->pzero);
if(delta>expecting || expect(remote,delta,expecting))
{
delta-=(expecting>delta ? delta:expecting);
received++;
code<<=1;
code|=space;
parity^=space;
//LOGPRINTF(2,"adding %d",space);
if(received%(remote->bits_in_byte+parity_bit)==0)
{
ir_code temp;
if((remote->parity == IR_PARITY_EVEN && parity) ||
(remote->parity == IR_PARITY_ODD && !parity))
{
//LOGPRINTF(1, "parity error ""after %d bits",received+1);
return((ir_code) -1);
}
parity = 0;
/* parity bit is filtered out */
temp=code>>(remote->bits_in_byte+parity_bit);
code=temp<<remote->bits_in_byte|
reverse(code>>parity_bit,
remote->bits_in_byte);
if(space && delta==0)
{
//LOGPRINTF(1,"failed at stop ""bit after %d bits",received+1);
return((ir_code) -1);
}
//LOGPRINTF(3,"awaiting stop bit");
set_pending_space(stop);
stop_bit=1;
}
}
else
{
if(delta==origdelta)
ir_code get_data(struct ir_remote * remote, int bits, int done)
{
ir_code code;
int i;
code = 0;
if (is_rcmm(remote)) {
lirc_t deltap, deltas, sum;
if (bits % 2 || done % 2) {
logprintf(LOG_ERR, "invalid bit number.");
return ((ir_code) - 1);
}
if (!sync_pending_space(remote))
return 0;
for (i = 0; i < bits; i += 2) {
code <<= 2;
deltap = get_next_pulse(remote->pzero + remote->pone + remote->ptwo + remote->pthree);
deltas = get_next_space(remote->szero + remote->sone + remote->stwo + remote->sthree);
if (deltap == 0 || deltas == 0) {
logprintf(LOG_ERR, "failed on bit %d", done + i + 1);
return ((ir_code) - 1);
}
sum = deltap + deltas;
logprintf(3, "rcmm: sum %ld", (__u32) sum);
if (expect(remote, sum, remote->pzero + remote->szero)) {
code |= 0;
logprintf(2, "00");
} else if (expect(remote, sum, remote->pone + remote->sone)) {
code |= 1;
logprintf(2, "01");
} else if (expect(remote, sum, remote->ptwo + remote->stwo)) {
code |= 2;
logprintf(2, "10");
} else if (expect(remote, sum, remote->pthree + remote->sthree)) {
code |= 3;
logprintf(2, "11");
} else {
logprintf(2, "no match for %d+%d=%d", deltap, deltas, sum);
return ((ir_code) - 1);
}
}
return (code);
} else if (is_grundig(remote)) {
lirc_t deltap, deltas, sum;
int state, laststate;
if (bits % 2 || done % 2) {
logprintf(LOG_ERR, "invalid bit number.");
return ((ir_code) - 1);
}
if (!sync_pending_pulse(remote))
return ((ir_code) - 1);
for (laststate = state = -1, i = 0; i < bits;) {
deltas = get_next_space(remote->szero + remote->sone + remote->stwo + remote->sthree);
deltap = get_next_pulse(remote->pzero + remote->pone + remote->ptwo + remote->pthree);
if (deltas == 0 || deltap == 0) {
logprintf(LOG_ERR, "failed on bit %d", done + i + 1);
return ((ir_code) - 1);
}
sum = deltas + deltap;
logprintf(3, "grundig: sum %ld", (__u32) sum);
if (expect(remote, sum, remote->szero + remote->pzero)) {
state = 0;
logprintf(2, "2T");
} else if (expect(remote, sum, remote->sone + remote->pone)) {
state = 1;
logprintf(2, "3T");
} else if (expect(remote, sum, remote->stwo + remote->ptwo)) {
state = 2;
logprintf(2, "4T");
} else if (expect(remote, sum, remote->sthree + remote->pthree)) {
state = 3;
logprintf(2, "6T");
} else {
logprintf(2, "no match for %d+%d=%d", deltas, deltap, sum);
return ((ir_code) - 1);
}
if (state == 3) { /* 6T */
i += 2;
code <<= 2;
state = -1;
code |= 0;
} else if (laststate == 2 && state == 0) { /* 4T2T */
i += 2;
code <<= 2;
state = -1;
code |= 1;
} else if (laststate == 1 && state == 1) { /* 3T3T */
i += 2;
code <<= 2;
state = -1;
code |= 2;
} else if (laststate == 0 && state == 2) { /* 2T4T */
i += 2;
code <<= 2;
state = -1;
code |= 3;
} else if (laststate == -1) {
/* 1st bit */
} else {
logprintf(LOG_ERR, "invalid state %d:%d", laststate, state);
return ((ir_code) - 1);
}
laststate = state;
}
return (code);
}
for (i = 0; i < bits; i++) {
code = code << 1;
if (is_goldstar(remote)) {
if ((done + i) % 2) {
logprintf(2, "$1");
remote->pone = remote->ptwo;
remote->sone = remote->stwo;
} else {
logprintf(2, "$2");
remote->pone = remote->pthree;
remote->sone = remote->sthree;
}
}
if (expectone(remote, done + i)) {
logprintf(2, "1");
code |= 1;
} else if (expectzero(remote, done + i)) {
logprintf(2, "0");
code |= 0;
} else {
logprintf(1, "failed on bit %d", done + i + 1);
return ((ir_code) - 1);
}
}
return (code);
}
