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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 2.14 2010/05/02 15:07:38 kls Exp $
*/
#include "channels.h"
#include <ctype.h>
#include "device.h"
#include "epg.h"
#include "timers.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!
// --- tChannelID ------------------------------------------------------------
const tChannelID tChannelID::InvalidID;
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;
}
cString tChannelID::ToString(void) const
{
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 --------------------------------------------------------------
cChannel::cChannel(void)
{
name = strdup("");
shortName = strdup("");
provider = strdup("");
portalName = strdup("");
memset(&__BeginData__, 0, (char *)&__EndData__ - (char *)&__BeginData__);
parameters = "";
modification = CHANNELMOD_NONE;
schedule = NULL;
linkChannels = NULL;
refChannel = NULL;
}
cChannel::cChannel(const cChannel &Channel)
{
name = NULL;
shortName = NULL;
provider = NULL;
portalName = NULL;
schedule = NULL;
linkChannels = NULL;
refChannel = NULL;
*this = Channel;
}
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;
}
}
}
free(name);
free(shortName);
free(provider);
free(portalName);
}
cChannel& cChannel::operator= (const cChannel &Channel)
{
name = strcpyrealloc(name, Channel.name);
shortName = strcpyrealloc(shortName, Channel.shortName);
provider = strcpyrealloc(provider, Channel.provider);
portalName = strcpyrealloc(portalName, Channel.portalName);
memcpy(&__BeginData__, &Channel.__BeginData__, (char *)&Channel.__EndData__ - (char *)&Channel.__BeginData__);
parameters = Channel.parameters;
return *this;
}
int cChannel::Transponder(int Frequency, char Polarization)
{
// some satellites have transponders at the same frequency, just with different polarization:
switch (toupper(Polarization)) {
case 'H': Frequency += 100000; break;
case 'V': Frequency += 200000; break;
case 'L': Frequency += 300000; break;
case 'R': Frequency += 400000; break;
default: esyslog("ERROR: invalid value for Polarization '%c'", Polarization);
}
return Frequency;
}
int cChannel::Transponder(void) const
{
int tf = frequency;
while (tf > 20000)
tf /= 1000;
if (IsSat()) {
const char *p = strpbrk(parameters, "HVLRhvlr"); // lowercase for backwards compatibility
if (p)
tf = Transponder(tf, *p);
}
return tf;
}
bool cChannel::HasTimer(void) const
{
for (cTimer *Timer = Timers.First(); Timer; Timer = Timers.Next(Timer)) {
if (Timer->Channel() == this)
return true;
}
return false;
}
int cChannel::Modification(int Mask)
{
int Result = modification & Mask;
modification = CHANNELMOD_NONE;
return Result;
}
void cChannel::CopyTransponderData(const cChannel *Channel)
{
if (Channel) {
frequency = Channel->frequency;
source = Channel->source;
srate = Channel->srate;
parameters = Channel->parameters;
}
}
bool cChannel::SetTransponderData(int Source, int Frequency, int Srate, const char *Parameters, bool Quiet)
{
if (strchr(Parameters, ':')) {
esyslog("ERROR: parameter string '%s' contains ':'", Parameters);
return false;
}
// 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;
// Sometimes the symbol rate is off by one
if (abs(srate - Srate) <= 1)
Srate = srate;
if (source != Source || frequency != Frequency || srate != Srate || strcmp(parameters, Parameters)) {
cString OldTransponderData = TransponderDataToString();
source = Source;
frequency = Frequency;
srate = Srate;
parameters = Parameters;
schedule = NULL;
if (Number() && !Quiet) {
dsyslog("changing transponder data of channel %d from %s to %s", Number(), *OldTransponderData, *TransponderDataToString());
modification |= CHANNELMOD_TRANSP;
Channels.SetModified();
}
}
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();
Channels.UnhashChannel(this);
}
nid = Nid;
tid = Tid;
sid = Sid;
rid = Rid;
if (Number())
Channels.HashChannel(this);
schedule = NULL;
}
}
void cChannel::SetName(const char *Name, const char *ShortName, const char *Provider)
{
if (!isempty(Name)) {
bool nn = strcmp(name, Name) != 0;
bool ns = strcmp(shortName, ShortName) != 0;
bool np = strcmp(provider, Provider) != 0;
if (nn || ns || np) {
if (Number()) {
dsyslog("changing name of channel %d from '%s,%s;%s' to '%s,%s;%s'", Number(), name, shortName, provider, Name, ShortName, Provider);
modification |= CHANNELMOD_NAME;
Channels.SetModified();
}
if (nn)
name = strcpyrealloc(name, Name);
if (ns)
shortName = strcpyrealloc(shortName, ShortName);
if (np)
provider = strcpyrealloc(provider, Provider);
}
}
}
void cChannel::SetPortalName(const char *PortalName)
{
if (!isempty(PortalName) && strcmp(portalName, PortalName) != 0) {
if (Number()) {
dsyslog("changing portal name of channel %d from '%s' to '%s'", Number(), portalName, PortalName);
modification |= CHANNELMOD_NAME;
Channels.SetModified();
}
portalName = strcpyrealloc(portalName, PortalName);
}
}
#define STRDIFF 0x01
#define VALDIFF 0x02
static int IntArraysDiffer(const int *a, const int *b, const char na[][MAXLANGCODE2] = NULL, const char nb[][MAXLANGCODE2] = NULL)
{
int result = 0;
for (int i = 0; a[i] || b[i]; i++) {
if (a[i] && na && nb && strcmp(na[i], nb[i]) != 0)
result |= STRDIFF;
if (a[i] != b[i])
result |= VALDIFF;
if (!a[i] || !b[i])
break;
}
return result;
}
static int IntArrayToString(char *s, const int *a, int Base = 10, const char n[][MAXLANGCODE2] = 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 Vtype, int *Apids, char ALangs[][MAXLANGCODE2], int *Dpids, char DLangs[][MAXLANGCODE2], int *Spids, char SLangs[][MAXLANGCODE2], int Tpid)
{
int mod = CHANNELMOD_NONE;
if (vpid != Vpid || ppid != Ppid || vtype != Vtype || tpid != Tpid)
mod |= CHANNELMOD_PIDS;
int m = IntArraysDiffer(apids, Apids, alangs, ALangs) | IntArraysDiffer(dpids, Dpids, dlangs, DLangs) | IntArraysDiffer(spids, Spids, slangs, SLangs);
if (m & STRDIFF)
mod |= CHANNELMOD_LANGS;
if (m & VALDIFF)
mod |= CHANNELMOD_PIDS;
if (mod) {
const int BufferSize = (MAXAPIDS + MAXDPIDS) * (5 + 1 + MAXLANGCODE2) + 10; // 5 digits plus delimiting ',' or ';' plus optional '=cod+cod', +10: paranoia
char OldApidsBuf[BufferSize];
char NewApidsBuf[BufferSize];
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;
const int SBufferSize = MAXSPIDS * (5 + 1 + MAXLANGCODE2) + 10; // 5 digits plus delimiting ',' or ';' plus optional '=cod', +10: paranoia
char OldSpidsBuf[SBufferSize];
char NewSpidsBuf[SBufferSize];
q = OldSpidsBuf;
q += IntArrayToString(q, spids, 10, slangs);
*q = 0;
q = NewSpidsBuf;
q += IntArrayToString(q, Spids, 10, SLangs);
*q = 0;
if (Number())
dsyslog("changing pids of channel %d from %d+%d=%d:%s:%s:%d to %d+%d=%d:%s:%s:%d", Number(), vpid, ppid, vtype, OldApidsBuf, OldSpidsBuf, tpid, Vpid, Ppid, Vtype, NewApidsBuf, NewSpidsBuf, Tpid);
vpid = Vpid;
ppid = Ppid;
vtype = Vtype;
for (int i = 0; i < MAXAPIDS; i++) {
apids[i] = Apids[i];
strn0cpy(alangs[i], ALangs[i], MAXLANGCODE2);
}
apids[MAXAPIDS] = 0;
for (int i = 0; i < MAXDPIDS; i++) {
dpids[i] = Dpids[i];
strn0cpy(dlangs[i], DLangs[i], MAXLANGCODE2);
}
dpids[MAXDPIDS] = 0;
for (int i = 0; i < MAXSPIDS; i++) {
spids[i] = Spids[i];
strn0cpy(slangs[i], SLangs[i], MAXLANGCODE2);
}
spids[MAXSPIDS] = 0;
tpid = Tpid;
modification |= mod;
Channels.SetModified();
}
}
void cChannel::SetSubtitlingDescriptors(uchar *SubtitlingTypes, uint16_t *CompositionPageIds, uint16_t *AncillaryPageIds)
{
if (SubtitlingTypes) {
for (int i = 0; i < MAXSPIDS; i++)
subtitlingTypes[i] = SubtitlingTypes[i];
}
if (CompositionPageIds) {
for (int i = 0; i < MAXSPIDS; i++)
compositionPageIds[i] = CompositionPageIds[i];
}
if (AncillaryPageIds) {
for (int i = 0; i < MAXSPIDS; i++)
ancillaryPageIds[i] = AncillaryPageIds[i];
}
}
void cChannel::SetCaIds(const int *CaIds)
{
if (caids[0] && caids[0] <= CA_USER_MAX)
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);
if (Number())
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 (Number() && 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");
if (Number())
dsyslog("%s", buffer);
}
void cChannel::SetRefChannel(cChannel *RefChannel)
{
refChannel = RefChannel;
}
cString cChannel::TransponderDataToString(void) const
{
if (cSource::IsTerr(source))
return cString::sprintf("%d:%s:%s", frequency, *parameters, *cSource::ToString(source));
return cString::sprintf("%d:%s:%s:%d", frequency, *parameters, *cSource::ToString(source), srate);
}
cString cChannel::ToText(const cChannel *Channel)
{
char FullName[strlen(Channel->name) + 1 + strlen(Channel->shortName) + 1 + strlen(Channel->provider) + 1 + 10]; // +10: paranoia
char *q = FullName;
q += sprintf(q, "%s", Channel->name);
if (!isempty(Channel->shortName))
q += sprintf(q, ",%s", Channel->shortName);
else if (strchr(Channel->name, ','))
q += sprintf(q, ",");
if (!isempty(Channel->provider))
q += sprintf(q, ";%s", Channel->provider);
*q = 0;
strreplace(FullName, ':', '|');
cString buffer;
if (Channel->groupSep) {
if (Channel->number)
buffer = cString::sprintf(":@%d %s\n", Channel->number, FullName);
else
buffer = cString::sprintf(":%s\n", FullName);
}
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);
if (Channel->vpid && Channel->vtype)
q += snprintf(q, sizeof(vpidbuf) - (q - vpidbuf), "=%d", Channel->vtype);
*q = 0;
const int BufferSize = (MAXAPIDS + MAXDPIDS) * (5 + 1 + MAXLANGCODE2) + 10; // 5 digits plus delimiting ',' or ';' plus optional '=cod+cod', +10: paranoia
char apidbuf[BufferSize];
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;
buffer = cString::sprintf("%s:%d:%s:%s:%d:%s:%s:%d:%s:%d:%d:%d:%d\n", FullName, Channel->frequency, *Channel->parameters, *cSource::ToString(Channel->source), Channel->srate, vpidbuf, apidbuf, Channel->tpid, caidbuf, Channel->sid, Channel->nid, Channel->tid, Channel->rid);
}
return buffer;
}
cString cChannel::ToText(void) const
{
return ToText(this);
}
bool cChannel::Parse(const char *s)
{
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;
}
}
name = strcpyrealloc(name, skipspace(s));
strreplace(name, '|', ':');
}
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;
vtype = 0;
apids[0] = 0;
dpids[0] = 0;
ok = false;
if (parambuf && sourcebuf && vpidbuf && apidbuf) {
parameters = parambuf;
ok = (source = cSource::FromString(sourcebuf)) >= 0;
char *p;
if ((p = strchr(vpidbuf, '=')) != NULL) {
*p++ = 0;
if (sscanf(p, "%d", &vtype) != 1)
return false;
}
if ((p = strchr(vpidbuf, '+')) != NULL) {
*p++ = 0;
if (sscanf(p, "%d", &ppid) != 1)
return false;
}
if (sscanf(vpidbuf, "%d", &vpid) != 1)
return false;
if (!ppid)
ppid = vpid;
if (vpid && !vtype)
vtype = 2; // default is MPEG-2
char *dpidbuf = strchr(apidbuf, ';');
if (dpidbuf)
*dpidbuf++ = 0;
p = apidbuf;
char *q;
int NumApids = 0;
char *strtok_next;
while ((q = strtok_r(p, ",", &strtok_next)) != NULL) {
if (NumApids < MAXAPIDS) {
char *l = strchr(q, '=');
if (l) {
*l++ = 0;
strn0cpy(alangs[NumApids], l, MAXLANGCODE2);
}
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;
char *strtok_next;
while ((q = strtok_r(p, ",", &strtok_next)) != NULL) {
if (NumDpids < MAXDPIDS) {
char *l = strchr(q, '=');
if (l) {
*l++ = 0;
strn0cpy(dlangs[NumDpids], l, MAXLANGCODE2);
}
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;
char *strtok_next;
while ((q = strtok_r(p, ",", &strtok_next)) != NULL) {
if (NumCaIds < MAXCAIDS) {
caids[NumCaIds++] = strtol(q, NULL, 16) & 0xFFFF;
if (NumCaIds == 1 && caids[0] <= CA_USER_MAX)
break;
}
else
esyslog("ERROR: too many CA ids!"); // no need to set ok to 'false'
p = NULL;
}
caids[NumCaIds] = 0;
}
}
strreplace(namebuf, '|', ':');
char *p = strchr(namebuf, ';');
if (p) {
*p++ = 0;
provider = strcpyrealloc(provider, p);
}
p = strrchr(namebuf, ','); // long name might contain a ',', so search for the rightmost one
if (p) {
*p++ = 0;
shortName = strcpyrealloc(shortName, p);
}
name = strcpyrealloc(name, namebuf);
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;
}
}
else
return false;
}
return ok;
}
bool cChannel::Save(FILE *f)
{
return fprintf(f, "%s", *ToText()) > 0;
}
// --- cChannelSorter --------------------------------------------------------
class cChannelSorter : public cListObject {
public:
cChannel *channel;
tChannelID channelID;
cChannelSorter(cChannel *Channel) {
channel = Channel;
channelID = channel->GetChannelID();
}
virtual int Compare(const cListObject &ListObject) const {
cChannelSorter *cs = (cChannelSorter *)&ListObject;
return memcmp(&channelID, &cs->channelID, sizeof(channelID));
}
};
// --- cChannels -------------------------------------------------------------
cChannels Channels;
cChannels::cChannels(void)
{
maxNumber = 0;
modified = CHANNELSMOD_NONE;
}
void cChannels::DeleteDuplicateChannels(void)
{
cList<cChannelSorter> ChannelSorter;
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (!channel->GroupSep())
ChannelSorter.Add(new cChannelSorter(channel));
}
ChannelSorter.Sort();
cChannelSorter *cs = ChannelSorter.First();
while (cs) {
cChannelSorter *next = ChannelSorter.Next(cs);
if (next && cs->channelID == next->channelID) {
dsyslog("deleting duplicate channel %s", *next->channel->ToText());
Del(next->channel);
}
cs = next;
}
}
bool cChannels::Load(const char *FileName, bool AllowComments, bool MustExist)
{
if (cConfig<cChannel>::Load(FileName, AllowComments, MustExist)) {
DeleteDuplicateChannels();
ReNumber();
return true;
}
return false;
}
void cChannels::HashChannel(cChannel *Channel)
{
channelsHashSid.Add(Channel, Channel->Sid());
}
void cChannels::UnhashChannel(cChannel *Channel)
{
channelsHashSid.Del(Channel, Channel->Sid());
}
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;
}
int cChannels::GetPrevNormal(int Idx)
{
cChannel *channel = Get(--Idx);
while (channel && channel->GroupSep())
channel = Get(--Idx);
return channel ? Idx : -1;
}
void cChannels::ReNumber(void)
{
channelsHashSid.Clear();
maxNumber = 0;
int Number = 1;
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (channel->GroupSep()) {
if (channel->Number() > Number)
Number = channel->Number();
}
else {
HashChannel(channel);
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)
{
cList<cHashObject> *list = channelsHashSid.GetList(ServiceID);
if (list) {
for (cHashObject *hobj = list->First(); hobj; hobj = list->Next(hobj)) {
cChannel *channel = (cChannel *)hobj->Object();
if (channel->Sid() == ServiceID && channel->Source() == Source && ISTRANSPONDER(channel->Transponder(), Transponder))
return channel;
}
}
return NULL;
}
cChannel *cChannels::GetByChannelID(tChannelID ChannelID, bool TryWithoutRid, bool TryWithoutPolarization)
{
int sid = ChannelID.Sid();
cList<cHashObject> *list = channelsHashSid.GetList(sid);
if (list) {
for (cHashObject *hobj = list->First(); hobj; hobj = list->Next(hobj)) {
cChannel *channel = (cChannel *)hobj->Object();
if (channel->Sid() == sid && channel->GetChannelID() == ChannelID)
return channel;
}
if (TryWithoutRid) {
ChannelID.ClrRid();
for (cHashObject *hobj = list->First(); hobj; hobj = list->Next(hobj)) {
cChannel *channel = (cChannel *)hobj->Object();
if (channel->Sid() == sid && channel->GetChannelID().ClrRid() == ChannelID)
return channel;
}
}
if (TryWithoutPolarization) {
ChannelID.ClrPolarization();
for (cHashObject *hobj = list->First(); hobj; hobj = list->Next(hobj)) {
cChannel *channel = (cChannel *)hobj->Object();
if (channel->Sid() == sid && channel->GetChannelID().ClrPolarization() == ChannelID)
return channel;
}
}
}
return NULL;
}
cChannel *cChannels::GetByTransponderID(tChannelID ChannelID)
{
int source = ChannelID.Source();
int nid = ChannelID.Nid();
int tid = ChannelID.Tid();
for (cChannel *channel = First(); channel; channel = Next(channel)) {
if (channel->Tid() == tid && channel->Nid() == nid && channel->Source() == source)
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, const char *ShortName, const char *Provider, int Nid, int Tid, int Sid, int Rid)
{
if (Transponder) {
dsyslog("creating new channel '%s,%s;%s' on %s transponder %d with id %d-%d-%d-%d", Name, ShortName, Provider, *cSource::ToString(Transponder->Source()), Transponder->Transponder(), Nid, Tid, Sid, Rid);
cChannel *NewChannel = new cChannel;
NewChannel->CopyTransponderData(Transponder);
NewChannel->SetId(Nid, Tid, Sid, Rid);
NewChannel->SetName(Name, ShortName, Provider);
Add(NewChannel);
ReNumber();
return NewChannel;
}
return NULL;
}
cString ChannelString(const cChannel *Channel, int Number)
{
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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