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vdr/channels.c
Klaus Schmidinger 8849308cf9 Version 1.5.6 
- Fixed a buffer overflow in initializing the system character table (thanks
  to Marco Schlüßler).
- Updated the Russian OSD texts (thanks to Oleg Roitburd).
- Fixed handling single byte characters >0x7F in Utf8ToArray() (thanks to Udo
  Richter).
- Improved numdigits(), isnumber() and strreplace() (thanks to Tobias Bratfisch).
- Fixed clearing color buttons in the 'curses' skin (thanks to Udo Richter).
- Fixed a typo in the function name of cOsd::SetOsdPosition() and added a range
  check to it (thanks to Christoph Haubrich).
- Updated the Finnish OSD texts (thanks to Rolf Ahrenberg).
- Improved cControl::Launch() to keep 'control' from pointing to uninitialized
  memory (thanks to Rolf Ahrenberg).
- Made skipspace() an inline function (suggested by Tobias Bratfisch) and changed
  it to handle the most common case of 'no leading space' very fast, and avoid
  calling isspace(), which made the whole function a lot faster.
- Fixed detection of Premiere NVOD channel links (thanks to Markus Hahn).
- Added a table of the used trick speed values to the description of
  cDevice::TrickSpeed() (suggested by Martin Dauskardt).
- Added a missing 'P' to vdr.c's SHUTDOWNCANCELROMPT macro (reported by Marco
  Schlüßler).
2007-07-22 18:00:00 +02:00

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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 1.54 2007/07/21 14:55:01 kls Exp $
*/
#include "channels.h"
#include <linux/dvb/frontend.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!
// -- 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;
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__);
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;
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__);
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;
}
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;
polarization = Channel->polarization;
inversion = Channel->inversion;
bandwidth = Channel->bandwidth;
coderateH = Channel->coderateH;
coderateL = Channel->coderateL;
modulation = Channel->modulation;
transmission = Channel->transmission;
guard = Channel->guard;
hierarchy = Channel->hierarchy;
}
}
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;
// Sometimes the symbol rate is off by one
if (abs(srate - Srate) <= 1)
Srate = srate;
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;
schedule = NULL;
}
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;
schedule = NULL;
}
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;
schedule = NULL;
}
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 *Apids, char ALangs[][MAXLANGCODE2], int *Dpids, char DLangs[][MAXLANGCODE2], int Tpid)
{
int mod = CHANNELMOD_NONE;
if (vpid != Vpid || ppid != Ppid || tpid != Tpid)
mod |= CHANNELMOD_PIDS;
int m = IntArraysDiffer(apids, Apids, alangs, ALangs) | IntArraysDiffer(dpids, Dpids, dlangs, DLangs);
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;
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++) {
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;
tpid = Tpid;
modification |= mod;
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;
}
cString cChannel::ParametersToString(void) const
{
char type = **cSource::ToString(source);
if (isdigit(type))
type = 'S';
#define ST(s) if (strchr(s, type))
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: invalid 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;
}
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);
if (!isempty(Channel->provider))
q += sprintf(q, ";%s", Channel->provider);
*q = 0;
strreplace(FullName, ':', '|');
char *buffer;
if (Channel->groupSep) {
if (Channel->number)
asprintf(&buffer, ":@%d %s\n", Channel->number, FullName);
else
asprintf(&buffer, ":%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);
*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;
asprintf(&buffer, "%s:%d:%s:%s:%d:%s:%s:%d:%s:%d:%d:%d:%d\n", FullName, Channel->frequency, *Channel->ParametersToString(), *cSource::ToString(Channel->source), Channel->srate, vpidbuf, apidbuf, Channel->tpid, caidbuf, Channel->sid, Channel->nid, Channel->tid, Channel->rid);
}
return cString(buffer, true);
}
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;
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;
if (sscanf(vpidbuf, "%d", &vpid) != 1)
return false;
if (p) {
if (sscanf(p, "%d", &ppid) != 1)
return false;
}
else
ppid = vpid;
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] <= 0x00FF)
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 = strchr(namebuf, ',');
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();
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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