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vdr/channels.c

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/*
* channels.c: Channel handling
*
* See the main source file 'vdr.c' for copyright information and
* how to reach the author.
*
* $Id: channels.c 1.28 2004/10/22 14:11:07 kls Exp $
*/
#include "channels.h"
#include <linux/dvb/frontend.h>
#include <ctype.h>
// IMPORTANT NOTE: in the 'sscanf()' calls there is a blank after the '%d'
// format characters in order to allow any number of blanks after a numeric
// value!
// -- Channel Parameter Maps -------------------------------------------------
const tChannelParameterMap InversionValues[] = {
{ 0, INVERSION_OFF },
{ 1, INVERSION_ON },
{ 999, INVERSION_AUTO },
{ -1 }
};
const tChannelParameterMap BandwidthValues[] = {
{ 6, BANDWIDTH_6_MHZ },
{ 7, BANDWIDTH_7_MHZ },
{ 8, BANDWIDTH_8_MHZ },
{ 999, BANDWIDTH_AUTO },
{ -1 }
};
const tChannelParameterMap CoderateValues[] = {
{ 0, FEC_NONE },
{ 12, FEC_1_2 },
{ 23, FEC_2_3 },
{ 34, FEC_3_4 },
{ 45, FEC_4_5 },
{ 56, FEC_5_6 },
{ 67, FEC_6_7 },
{ 78, FEC_7_8 },
{ 89, FEC_8_9 },
{ 999, FEC_AUTO },
{ -1 }
};
const tChannelParameterMap ModulationValues[] = {
{ 0, QPSK },
{ 16, QAM_16 },
{ 32, QAM_32 },
{ 64, QAM_64 },
{ 128, QAM_128 },
{ 256, QAM_256 },
{ 999, QAM_AUTO },
{ -1 }
};
const tChannelParameterMap TransmissionValues[] = {
{ 2, TRANSMISSION_MODE_2K },
{ 8, TRANSMISSION_MODE_8K },
{ 999, TRANSMISSION_MODE_AUTO },
{ -1 }
};
const tChannelParameterMap GuardValues[] = {
{ 4, GUARD_INTERVAL_1_4 },
{ 8, GUARD_INTERVAL_1_8 },
{ 16, GUARD_INTERVAL_1_16 },
{ 32, GUARD_INTERVAL_1_32 },
{ 999, GUARD_INTERVAL_AUTO },
{ -1 }
};
const tChannelParameterMap HierarchyValues[] = {
{ 0, HIERARCHY_NONE },
{ 1, HIERARCHY_1 },
{ 2, HIERARCHY_2 },
{ 4, HIERARCHY_4 },
{ 999, HIERARCHY_AUTO },
{ -1 }
};
int UserIndex(int Value, const tChannelParameterMap *Map)
{
const tChannelParameterMap *map = Map;
while (map && map->userValue != -1) {
if (map->userValue == Value)
return map - Map;
map++;
}
return -1;
}
int DriverIndex(int Value, const tChannelParameterMap *Map)
{
const tChannelParameterMap *map = Map;
while (map && map->userValue != -1) {
if (map->driverValue == Value)
return map - Map;
map++;
}
return -1;
}
int MapToUser(int Value, const tChannelParameterMap *Map)
{
int n = DriverIndex(Value, Map);
if (n >= 0)
return Map[n].userValue;
return -1;
}
int MapToDriver(int Value, const tChannelParameterMap *Map)
{
int n = UserIndex(Value, Map);
if (n >= 0)
return Map[n].driverValue;
return -1;
}
// -- tChannelID -------------------------------------------------------------
const tChannelID tChannelID::InvalidID;
bool tChannelID::operator== (const tChannelID &arg) const
{
return source == arg.source && nid == arg.nid && tid == arg.tid && sid == arg.sid && rid == arg.rid;
}
tChannelID tChannelID::FromString(const char *s)
{
char *sourcebuf = NULL;
int nid;
int tid;
int sid;
int rid = 0;
int fields = sscanf(s, "%a[^-]-%d-%d-%d-%d", &sourcebuf, &nid, &tid, &sid, &rid);
if (fields == 4 || fields == 5) {
int source = cSource::FromString(sourcebuf);
free(sourcebuf);
if (source >= 0)
return tChannelID(source, nid, tid, sid, rid);
}
return tChannelID::InvalidID;
}
const char *tChannelID::ToString(void)
{
static char buffer[256];
snprintf(buffer, sizeof(buffer), rid ? "%s-%d-%d-%d-%d" : "%s-%d-%d-%d", cSource::ToString(source), nid, tid, sid, rid);
return buffer;
}
tChannelID &tChannelID::ClrPolarization(void)
{
while (tid > 100000)
tid -= 100000;
return *this;
}
// -- cChannel ---------------------------------------------------------------
char *cChannel::buffer = NULL;
cChannel::cChannel(void)
{
memset(&__BeginData__, 0, (char *)&__EndData__ - (char *)&__BeginData__);
inversion = INVERSION_AUTO;
bandwidth = BANDWIDTH_AUTO;
coderateH = FEC_AUTO;
coderateL = FEC_AUTO;
modulation = QAM_AUTO;
transmission = TRANSMISSION_MODE_AUTO;
guard = GUARD_INTERVAL_AUTO;
hierarchy = HIERARCHY_AUTO;
modification = CHANNELMOD_NONE;
linkChannels = NULL;
refChannel = NULL;
}
cChannel::cChannel(const cChannel &Channel)
{
*this = Channel;
*name = 0;
vpid = 0;
ppid = 0;
apids[0] = 0;
dpids[0] = 0;
tpid = 0;
caids[0] = 0;
nid = 0;
tid = 0;
sid = 0;
rid = 0;
number = 0;
groupSep = false;
modification = CHANNELMOD_NONE;
linkChannels = NULL;
refChannel = NULL;
}
cChannel::~cChannel()
{
delete linkChannels;
linkChannels = NULL; // more than one channel can link to this one, so we need the following loop
for (cChannel *Channel = Channels.First(); Channel; Channel = Channels.Next(Channel)) {
if (Channel->linkChannels) {
for (cLinkChannel *lc = Channel->linkChannels->First(); lc; lc = Channel->linkChannels->Next(lc)) {
if (lc->Channel() == this) {
Channel->linkChannels->Del(lc);
break;
}
}
if (Channel->linkChannels->Count() == 0) {
delete Channel->linkChannels;
Channel->linkChannels = NULL;
}
}
}
}
cChannel& cChannel::operator= (const cChannel &Channel)
{
memcpy(&__BeginData__, &Channel.__BeginData__, (char *)&Channel.__EndData__ - (char *)&Channel.__BeginData__);
return *this;
}
int cChannel::Transponder(int Frequency, char Polarization)
{
// some satellites have transponders at the same frequency, just with different polarization:
switch (tolower(Polarization)) {
case 'h': Frequency += 100000; break;
case 'v': Frequency += 200000; break;
case 'l': Frequency += 300000; break;
case 'r': Frequency += 400000; break;
}
return Frequency;
}
int cChannel::Transponder(void) const
{
int tf = frequency;
while (tf > 20000)
tf /= 1000;
if (IsSat())
tf = Transponder(tf, polarization);
return tf;
}
tChannelID cChannel::GetChannelID(void) const
{
return tChannelID(source, nid, (nid || tid) ? tid : Transponder(), sid, rid);
}
int cChannel::Modification(int Mask)
{
int Result = modification & Mask;
modification = CHANNELMOD_NONE;
return Result;
}
bool cChannel::SetSatTransponderData(int Source, int Frequency, char Polarization, int Srate, int CoderateH)
{
// Workarounds for broadcaster stupidity:
// Some providers broadcast the transponder frequency of their channels with two different
// values (like 12551 and 12552), so we need to allow for a little tolerance here
if (abs(frequency - Frequency) <= 1)
Frequency = frequency;
// Sometimes the transponder frequency is set to 0, which is just wrong
if (Frequency == 0)
return false;
if (source != Source || frequency != Frequency || polarization != Polarization || srate != Srate || coderateH != CoderateH) {
if (Number()) {
dsyslog("changing transponder data of channel %d from %s:%d:%c:%d:%d to %s:%d:%c:%d:%d", Number(), cSource::ToString(source), frequency, polarization, srate, coderateH, cSource::ToString(Source), Frequency, Polarization, Srate, CoderateH);
modification |= CHANNELMOD_TRANSP;
Channels.SetModified();
}
source = Source;
frequency = Frequency;
polarization = Polarization;
srate = Srate;
coderateH = CoderateH;
modulation = QPSK;
}
return true;
}
bool cChannel::SetCableTransponderData(int Source, int Frequency, int Modulation, int Srate, int CoderateH)
{
if (source != Source || frequency != Frequency || modulation != Modulation || srate != Srate || coderateH != CoderateH) {
if (Number()) {
dsyslog("changing transponder data of channel %d from %s:%d:%d:%d:%d to %s:%d:%d:%d:%d", Number(), cSource::ToString(source), frequency, modulation, srate, coderateH, cSource::ToString(Source), Frequency, Modulation, Srate, CoderateH);
modification |= CHANNELMOD_TRANSP;
Channels.SetModified();
}
source = Source;
frequency = Frequency;
modulation = Modulation;
srate = Srate;
coderateH = CoderateH;
}
return true;
}
bool cChannel::SetTerrTransponderData(int Source, int Frequency, int Bandwidth, int Modulation, int Hierarchy, int CoderateH, int CoderateL, int Guard, int Transmission)
{
if (source != Source || frequency != Frequency || bandwidth != Bandwidth || modulation != Modulation || hierarchy != Hierarchy || coderateH != CoderateH || coderateL != CoderateL || guard != Guard || transmission != Transmission) {
if (Number()) {
dsyslog("changing transponder data of channel %d from %s:%d:%d:%d:%d:%d:%d:%d:%d to %s:%d:%d:%d:%d:%d:%d:%d:%d", Number(), cSource::ToString(source), frequency, bandwidth, modulation, hierarchy, coderateH, coderateL, guard, transmission, cSource::ToString(Source), Frequency, Bandwidth, Modulation, Hierarchy, CoderateH, CoderateL, Guard, Transmission);
modification |= CHANNELMOD_TRANSP;
Channels.SetModified();
}
source = Source;
frequency = Frequency;
bandwidth = Bandwidth;
modulation = Modulation;
hierarchy = Hierarchy;
coderateH = CoderateH;
coderateL = CoderateL;
guard = Guard;
transmission = Transmission;
}
return true;
}
void cChannel::SetId(int Nid, int Tid, int Sid, int Rid)
{
if (nid != Nid || tid != Tid || sid != Sid || rid != Rid) {
if (Number()) {
dsyslog("changing id of channel %d from %d-%d-%d-%d to %d-%d-%d-%d", Number(), nid, tid, sid, rid, Nid, Tid, Sid, Rid);
modification |= CHANNELMOD_ID;
Channels.SetModified();
}
nid = Nid;
tid = Tid;
sid = Sid;
rid = Rid;
}
}
void cChannel::SetName(const char *Name)
{
if (!isempty(Name) && strcmp(name, Name) != 0) {
if (Number()) {
dsyslog("changing name of channel %d from '%s' to '%s'", Number(), name, Name);
modification |= CHANNELMOD_NAME;
Channels.SetModified();
}
strn0cpy(name, Name, MaxChannelName);
}
}
static bool IntArraysDiffer(const int *a, const int *b, const char na[][4] = NULL, const char nb[][4] = NULL)
{
int i = 0;
while (a[i] && b[i]) {
if (a[i] != b[i] || na && nb && strcmp(na[i], nb[i]) != 0)
return true;
i++;
}
return a[i] != b[i] || a[i] && na && nb && strcmp(na[i], nb[i]) != 0;
}
static int IntArrayToString(char *s, const int *a, int Base = 10, const char n[][4] = NULL)
{
char *q = s;
int i = 0;
while (a[i] || i == 0) {
q += sprintf(q, Base == 16 ? "%s%X" : "%s%d", i ? "," : "", a[i]);
if (a[i] && n && *n[i])
q += sprintf(q, "=%s", n[i]);
if (!a[i])
break;
i++;
}
*q = 0;
return q - s;
}
void cChannel::SetPids(int Vpid, int Ppid, int *Apids, char ALangs[][4], int *Dpids, char DLangs[][4], int Tpid)
{
bool modified = vpid != Vpid || ppid != Ppid || tpid != Tpid;
if (!modified)
modified = IntArraysDiffer(apids, Apids, alangs, ALangs) || IntArraysDiffer(dpids, Dpids, dlangs, DLangs);
if (modified) {
char OldApidsBuf[MAXAPIDS * 2 * 10 + 10]; // 2: Apids and Dpids, 10: 5 digits plus delimiting ',' or ';' plus optional '=cod', +10: paranoia
char NewApidsBuf[MAXAPIDS * 2 * 10 + 10];
char *q = OldApidsBuf;
q += IntArrayToString(q, apids, 10, alangs);
if (dpids[0]) {
*q++ = ';';
q += IntArrayToString(q, dpids, 10, dlangs);
}
*q = 0;
q = NewApidsBuf;
q += IntArrayToString(q, Apids, 10, ALangs);
if (Dpids[0]) {
*q++ = ';';
q += IntArrayToString(q, Dpids, 10, DLangs);
}
*q = 0;
dsyslog("changing pids of channel %d from %d+%d:%s:%d to %d+%d:%s:%d", Number(), vpid, ppid, OldApidsBuf, tpid, Vpid, Ppid, NewApidsBuf, Tpid);
vpid = Vpid;
ppid = Ppid;
for (int i = 0; i <= MAXAPIDS; i++) { // <= to copy the terminating 0
apids[i] = Apids[i];
strn0cpy(alangs[i], ALangs[i], 4);
dpids[i] = Dpids[i];
strn0cpy(dlangs[i], DLangs[i], 4);
}
tpid = Tpid;
modification |= CHANNELMOD_PIDS;
Channels.SetModified();
}
}
void cChannel::SetCaIds(const int *CaIds)
{
if (caids[0] && caids[0] <= 0x00FF)
return; // special values will not be overwritten
if (IntArraysDiffer(caids, CaIds)) {
char OldCaIdsBuf[MAXCAIDS * 5 + 10]; // 5: 4 digits plus delimiting ',', 10: paranoia
char NewCaIdsBuf[MAXCAIDS * 5 + 10];
IntArrayToString(OldCaIdsBuf, caids, 16);
IntArrayToString(NewCaIdsBuf, CaIds, 16);
dsyslog("changing caids of channel %d from %s to %s", Number(), OldCaIdsBuf, NewCaIdsBuf);
for (int i = 0; i <= MAXCAIDS; i++) { // <= to copy the terminating 0
caids[i] = CaIds[i];
if (!CaIds[i])
break;
}
modification |= CHANNELMOD_CA;
Channels.SetModified();
}
}
void cChannel::SetCaDescriptors(int Level)
{
if (Level > 0) {
modification |= CHANNELMOD_CA;
Channels.SetModified();
if (Level > 1)
dsyslog("changing ca descriptors of channel %d", Number());
}
}
void cChannel::SetLinkChannels(cLinkChannels *LinkChannels)
{
if (!linkChannels && !LinkChannels)
return;
if (linkChannels && LinkChannels) {
cLinkChannel *lca = linkChannels->First();
cLinkChannel *lcb = LinkChannels->First();
while (lca && lcb) {
if (lca->Channel() != lcb->Channel()) {
lca = NULL;
break;
}
lca = linkChannels->Next(lca);
lcb = LinkChannels->Next(lcb);
}
if (!lca && !lcb) {
delete LinkChannels;
return; // linkage has not changed
}
}
char buffer[((linkChannels ? linkChannels->Count() : 0) + (LinkChannels ? LinkChannels->Count() : 0)) * 6 + 256]; // 6: 5 digit channel number plus blank, 256: other texts (see below) plus reserve
char *q = buffer;
q += sprintf(q, "linking channel %d from", Number());
if (linkChannels) {
for (cLinkChannel *lc = linkChannels->First(); lc; lc = linkChannels->Next(lc)) {
lc->Channel()->SetRefChannel(NULL);
q += sprintf(q, " %d", lc->Channel()->Number());
}
delete linkChannels;
}
else
q += sprintf(q, " none");
q += sprintf(q, " to");
linkChannels = LinkChannels;
if (linkChannels) {
for (cLinkChannel *lc = linkChannels->First(); lc; lc = linkChannels->Next(lc)) {
lc->Channel()->SetRefChannel(this);
q += sprintf(q, " %d", lc->Channel()->Number());
//dsyslog("link %4d -> %4d: %s", Number(), lc->Channel()->Number(), lc->Channel()->Name());
}
}
else
q += sprintf(q, " none");
dsyslog(buffer);
}
void cChannel::SetRefChannel(cChannel *RefChannel)
{
refChannel = RefChannel;
}
static int PrintParameter(char *p, char Name, int Value)
{
return Value >= 0 && Value != 999 ? sprintf(p, "%c%d", Name, Value) : 0;
}
const char *cChannel::ParametersToString(void) const
{
char type = *cSource::ToString(source);
if (isdigit(type))
type = 'S';
#define ST(s) if (strchr(s, type))
static char buffer[64];
char *q = buffer;
*q = 0;
ST(" S ") q += sprintf(q, "%c", polarization);
ST("CST") q += PrintParameter(q, 'I', MapToUser(inversion, InversionValues));
ST("CST") q += PrintParameter(q, 'C', MapToUser(coderateH, CoderateValues));
ST(" T") q += PrintParameter(q, 'D', MapToUser(coderateL, CoderateValues));
ST("C T") q += PrintParameter(q, 'M', MapToUser(modulation, ModulationValues));
ST(" T") q += PrintParameter(q, 'B', MapToUser(bandwidth, BandwidthValues));
ST(" T") q += PrintParameter(q, 'T', MapToUser(transmission, TransmissionValues));
ST(" T") q += PrintParameter(q, 'G', MapToUser(guard, GuardValues));
ST(" T") q += PrintParameter(q, 'Y', MapToUser(hierarchy, HierarchyValues));
return buffer;
}
static const char *ParseParameter(const char *s, int &Value, const tChannelParameterMap *Map)
{
if (*++s) {
char *p = NULL;
errno = 0;
int n = strtol(s, &p, 10);
if (!errno && p != s) {
Value = MapToDriver(n, Map);
if (Value >= 0)
return p;
}
}
esyslog("ERROR: illegal value for parameter '%c'", *(s - 1));
return NULL;
}
bool cChannel::StringToParameters(const char *s)
{
while (s && *s) {
switch (toupper(*s)) {
case 'B': s = ParseParameter(s, bandwidth, BandwidthValues); break;
case 'C': s = ParseParameter(s, coderateH, CoderateValues); break;
case 'D': s = ParseParameter(s, coderateL, CoderateValues); break;
case 'G': s = ParseParameter(s, guard, GuardValues); break;
case 'H': polarization = *s++; break;
case 'I': s = ParseParameter(s, inversion, InversionValues); break;
case 'L': polarization = *s++; break;
case 'M': s = ParseParameter(s, modulation, ModulationValues); break;
case 'R': polarization = *s++; break;
case 'T': s = ParseParameter(s, transmission, TransmissionValues); break;
case 'V': polarization = *s++; break;
case 'Y': s = ParseParameter(s, hierarchy, HierarchyValues); break;
default: esyslog("ERROR: unknown parameter key '%c'", *s);
return false;
}
}
return true;
}
const char *cChannel::ToText(const cChannel *Channel)
{
char buf[MaxChannelName * 2];
const char *s = Channel->name;
if (strchr(s, ':'))
s = strreplace(strcpy(buf, s), ':', '|');
free(buffer);
if (Channel->groupSep) {
if (Channel->number)
asprintf(&buffer, ":@%d %s\n", Channel->number, s);
else
asprintf(&buffer, ":%s\n", s);
}
else {
char vpidbuf[32];
char *q = vpidbuf;
q += snprintf(q, sizeof(vpidbuf), "%d", Channel->vpid);
if (Channel->ppid && Channel->ppid != Channel->vpid)
q += snprintf(q, sizeof(vpidbuf) - (q - vpidbuf), "+%d", Channel->ppid);
*q = 0;
char apidbuf[MAXAPIDS * 2 * 10 + 10]; // 2: Apids and Dpids, 10: 5 digits plus delimiting ',' or ';' plus optional '=cod', +10: paranoia
q = apidbuf;
q += IntArrayToString(q, Channel->apids, 10, Channel->alangs);
if (Channel->dpids[0]) {
*q++ = ';';
q += IntArrayToString(q, Channel->dpids, 10, Channel->dlangs);
}
*q = 0;
char caidbuf[MAXCAIDS * 5 + 10]; // 5: 4 digits plus delimiting ',', 10: paranoia
q = caidbuf;
q += IntArrayToString(q, Channel->caids, 16);
*q = 0;
asprintf(&buffer, "%s:%d:%s:%s:%d:%s:%s:%d:%s:%d:%d:%d:%d\n", s, Channel->frequency, Channel->ParametersToString(), cSource::ToString(Channel->source), Channel->srate, vpidbuf, apidbuf, Channel->tpid, caidbuf, Channel->sid, Channel->nid, Channel->tid, Channel->rid);
}
return buffer;
}
const char *cChannel::ToText(void) const
{
return ToText(this);
}
bool cChannel::Parse(const char *s, bool AllowNonUniqueID)
{
bool ok = true;
if (*s == ':') {
groupSep = true;
if (*++s == '@' && *++s) {
char *p = NULL;
errno = 0;
int n = strtol(s, &p, 10);
if (!errno && p != s && n > 0) {
number = n;
s = p;
}
}
strn0cpy(name, skipspace(s), MaxChannelName);
}
else {
groupSep = false;
char *namebuf = NULL;
char *sourcebuf = NULL;
char *parambuf = NULL;
char *vpidbuf = NULL;
char *apidbuf = NULL;
char *caidbuf = NULL;
int fields = sscanf(s, "%a[^:]:%d :%a[^:]:%a[^:] :%d :%a[^:]:%a[^:]:%d :%a[^:]:%d :%d :%d :%d ", &namebuf, &frequency, &parambuf, &sourcebuf, &srate, &vpidbuf, &apidbuf, &tpid, &caidbuf, &sid, &nid, &tid, &rid);
if (fields >= 9) {
if (fields == 9) {
// allow reading of old format
sid = atoi(caidbuf);
delete caidbuf;
caidbuf = NULL;
caids[0] = tpid;
caids[1] = 0;
tpid = 0;
}
vpid = ppid = 0;
apids[0] = 0;
dpids[0] = 0;
ok = false;
if (parambuf && sourcebuf && vpidbuf && apidbuf) {
ok = StringToParameters(parambuf) && (source = cSource::FromString(sourcebuf)) >= 0;
char *p = strchr(vpidbuf, '+');
if (p)
*p++ = 0;
sscanf(vpidbuf, "%d", &vpid);
if (p)
sscanf(p, "%d", &ppid);
else
ppid = vpid;
char *dpidbuf = strchr(apidbuf, ';');
if (dpidbuf)
*dpidbuf++ = 0;
p = apidbuf;
char *q;
int NumApids = 0;
while ((q = strtok(p, ",")) != NULL) {
if (NumApids < MAXAPIDS) {
char *l = strchr(q, '=');
if (l) {
*l++ = 0;
strn0cpy(alangs[NumApids], l, 4);
}
else
*alangs[NumApids] = 0;
apids[NumApids++] = strtol(q, NULL, 10);
}
else
esyslog("ERROR: too many APIDs!"); // no need to set ok to 'false'
p = NULL;
}
apids[NumApids] = 0;
if (dpidbuf) {
char *p = dpidbuf;
char *q;
int NumDpids = 0;
while ((q = strtok(p, ",")) != NULL) {
if (NumDpids < MAXAPIDS) {
char *l = strchr(q, '=');
if (l) {
*l++ = 0;
strn0cpy(dlangs[NumDpids], l, 4);
}
else
*dlangs[NumDpids] = 0;
dpids[NumDpids++] = strtol(q, NULL, 10);
}
else
esyslog("ERROR: too many DPIDs!"); // no need to set ok to 'false'
p = NULL;
}
dpids[NumDpids] = 0;
}
if (caidbuf) {
char *p = caidbuf;
char *q;
int NumCaIds = 0;
while ((q = strtok(p, ",")) != NULL) {
if (NumCaIds < MAXCAIDS) {
caids[NumCaIds++] = strtol(q, NULL, 16) & 0xFFFF;
if (NumCaIds == 1 && caids[0] <= 0x00FF)
break;
}
else
esyslog("ERROR: too many CA ids!"); // no need to set ok to 'false'
p = NULL;
}
caids[NumCaIds] = 0;
}
}
strn0cpy(name, namebuf, MaxChannelName);
free(parambuf);
free(sourcebuf);
free(vpidbuf);
free(apidbuf);
free(caidbuf);
free(namebuf);
if (!GetChannelID().Valid()) {
esyslog("ERROR: channel data results in invalid ID!");
return false;
}
if (!AllowNonUniqueID && Channels.GetByChannelID(GetChannelID())) {
esyslog("ERROR: channel data not unique!");
return false;
}
}
else
return false;
}
strreplace(name, '|', ':');
return ok;
}
bool cChannel::Save(FILE *f)
{
return fprintf(f, ToText()) > 0;
}
// -- cChannels --------------------------------------------------------------
cChannels Channels;
cChannels::cChannels(void)
{
maxNumber = 0;
modified = CHANNELSMOD_NONE;
}
bool cChannels::Load(const char *FileName, bool AllowComments, bool MustExist)
{
if (cConfig<cChannel>::Load(FileName, AllowComments, MustExist)) {
ReNumber();
return true;
}
return false;
}
int cChannels::GetNextGroup(int Idx)
{
cChannel *channel = Get(++Idx);
while (channel && !(channel->GroupSep() && *channel->Name()))
channel = Get(++Idx);
return channel ? Idx : -1;
}
int cChannels::GetPrevGroup(int Idx)
{
cChannel *channel = Get(--Idx);
while (channel && !(channel->GroupSep() && *channel->Name()))
channel = Get(--Idx);
return channel ? Idx : -1;
}
int cChannels::GetNextNormal(int Idx)
{
cChannel *channel = Get(++Idx);
while (channel && channel->GroupSep())
channel = Get(++Idx);
return channel ? Idx : -1;
}
void cChannels::ReNumber( void )
{
int Number = 1;
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (channel->GroupSep()) {
if (channel->Number() > Number)
Number = channel->Number();
}
else {
maxNumber = Number;
channel->SetNumber(Number++);
}
}
}
cChannel *cChannels::GetByNumber(int Number, int SkipGap)
{
cChannel *previous = NULL;
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep()) {
if (channel->Number() == Number)
return channel;
else if (SkipGap && channel->Number() > Number)
return SkipGap > 0 ? channel : previous;
previous = channel;
}
}
return NULL;
}
cChannel *cChannels::GetByServiceID(int Source, int Transponder, unsigned short ServiceID)
{
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep() && channel->Source() == Source && ISTRANSPONDER(channel->Transponder(), Transponder) && channel->Sid() == ServiceID)
return channel;
}
return NULL;
}
cChannel *cChannels::GetByChannelID(tChannelID ChannelID, bool TryWithoutRid, bool TryWithoutPolarization)
{
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep() && channel->GetChannelID() == ChannelID)
return channel;
}
if (TryWithoutRid) {
ChannelID.ClrRid();
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep() && channel->GetChannelID().ClrRid() == ChannelID)
return channel;
}
}
if (TryWithoutPolarization) {
ChannelID.ClrPolarization();
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep() && channel->GetChannelID().ClrPolarization() == ChannelID)
return channel;
}
}
return NULL;
}
bool cChannels::HasUniqueChannelID(cChannel *NewChannel, cChannel *OldChannel)
{
tChannelID NewChannelID = NewChannel->GetChannelID();
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep() && channel != OldChannel && channel->GetChannelID() == NewChannelID)
return false;
}
return true;
}
bool cChannels::SwitchTo(int Number)
{
cChannel *channel = GetByNumber(Number);
return channel && cDevice::PrimaryDevice()->SwitchChannel(channel, true);
}
void cChannels::SetModified(bool ByUser)
{
modified = ByUser ? CHANNELSMOD_USER : !modified ? CHANNELSMOD_AUTO : modified;
}
int cChannels::Modified(void)
{
int Result = modified;
modified = CHANNELSMOD_NONE;
return Result;
}
cChannel *cChannels::NewChannel(const cChannel *Transponder, const char *Name, int Nid, int Tid, int Sid, int Rid)
{
if (Transponder) {
dsyslog("creating new channel '%s' on %s transponder %d with id %d-%d-%d-%d", Name, cSource::ToString(Transponder->Source()), Transponder->Transponder(), Nid, Tid, Sid, Rid);
cChannel *NewChannel = new cChannel(*Transponder);
NewChannel->SetId(Nid, Tid, Sid, Rid);
NewChannel->SetName(Name);
Add(NewChannel);
ReNumber();
return NewChannel;
}
return NULL;
}
const char *ChannelString(const cChannel *Channel, int Number)
{
static char buffer[256];
if (Channel) {
if (Channel->GroupSep())
snprintf(buffer, sizeof(buffer), "%s", Channel->Name());
else
snprintf(buffer, sizeof(buffer), "%d%s %s", Channel->Number(), Number ? "-" : "", Channel->Name());
}
else if (Number)
snprintf(buffer, sizeof(buffer), "%d-", Number);
else
snprintf(buffer, sizeof(buffer), "%s", tr("*** Invalid Channel ***"));
return buffer;
}
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