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From 43914f1e49c368fbcc4d97e63e0e878de1238594 Mon Sep 17 00:00:00 2001
From: etobi <git@e-tobi.net>
Date: Fri, 12 Feb 2010 21:55:04 +0100
Subject: [PATCH 1/5] Record teletext subtitles
---
channels.c | 7 +++++++
channels.h | 14 ++++++++++++++
pat.c | 18 +++++++++++++++++-
receiver.c | 2 +-
remux.c | 28 ++++++++++++++++++++++++++++
remux.h | 1 +
6 files changed, 68 insertions(+), 2 deletions(-)
diff --git a/channels.c b/channels.c
index c14df19..817b7d3 100644
--- a/channels.c
+++ b/channels.c
@@ -551,6 +551,13 @@ void cChannel::SetSubtitlingDescriptors(uchar *SubtitlingTypes, uint16_t *Compos
}
}
+void cChannel::SetTeletextSubtitlePages(tTeletextSubtitlePage pages[])
+{
+ for (int i = 0; i < MAXTXTPAGES; i++)
+ teletextSubtitlePages[i] = pages[i];
+ teletextSubtitlePages[MAXTXTPAGES].ttxtType = 0;
+}
+
void cChannel::SetCaIds(const int *CaIds)
{
if (caids[0] && caids[0] <= CA_USER_MAX)
diff --git a/channels.h b/channels.h
index b465f6a..18ed7c6 100644
--- a/channels.h
+++ b/channels.h
@@ -35,6 +35,7 @@
#define MAXDPIDS 16 // dolby (AC3 + DTS)
#define MAXSPIDS 32 // subtitles
#define MAXCAIDS 8 // conditional access
+#define MAXTXTPAGES 8 // teletext pages
#define MAXLANGCODE1 4 // a 3 letter language code, zero terminated
#define MAXLANGCODE2 8 // up to two 3 letter language codes, separated by '+' and zero terminated
@@ -92,6 +93,16 @@ public:
static const tChannelID InvalidID;
};
+struct tTeletextSubtitlePage {
+ tTeletextSubtitlePage(void) { ttxtPage = ttxtMagazine = ttxtType = ttxtLanguage[0] = 0; }
+ tTeletextSubtitlePage(int page) { ttxtMagazine = (page / 100) & 0x7; ttxtPage = (((page % 100) / 10) << 4) + (page % 10); ttxtType = 0x02; }
+ char ttxtLanguage[MAXLANGCODE1];
+ uchar ttxtPage;
+ uchar ttxtMagazine;
+ uchar ttxtType;
+ int PageNumber(void) const { return BCDCHARTOINT(ttxtMagazine) * 100 + BCDCHARTOINT(ttxtPage); }
+ };
+
class cChannel;
class cLinkChannel : public cListObject {
@@ -133,6 +144,7 @@ private:
uint16_t compositionPageIds[MAXSPIDS];
uint16_t ancillaryPageIds[MAXSPIDS];
int tpid;
+ tTeletextSubtitlePage teletextSubtitlePages[MAXTXTPAGES + 1]; // list is termintated by ttxtType=0
int caids[MAXCAIDS + 1]; // list is zero-terminated
int nid;
int tid;
@@ -192,6 +204,7 @@ public:
uint16_t CompositionPageId(int i) const { return (0 <= i && i < MAXSPIDS) ? compositionPageIds[i] : uint16_t(0); }
uint16_t AncillaryPageId(int i) const { return (0 <= i && i < MAXSPIDS) ? ancillaryPageIds[i] : uint16_t(0); }
int Tpid(void) const { return tpid; }
+ const tTeletextSubtitlePage TeletextSubtitlePage(int i) const { return (0 <= i && i < MAXTXTPAGES) ? teletextSubtitlePages[i] : tTeletextSubtitlePage(); };
const int *Caids(void) const { return caids; }
int Ca(int Index = 0) const { return Index < MAXCAIDS ? caids[Index] : 0; }
int Nid(void) const { return nid; }
@@ -228,6 +241,7 @@ public:
void SetName(const char *Name, const char *ShortName, const char *Provider);
void SetPortalName(const char *PortalName);
void SetPids(int Vpid, int Ppid, int Vtype, int *Apids, char ALangs[][MAXLANGCODE2], int *Dpids, char DLangs[][MAXLANGCODE2], int *Spids, char SLangs[][MAXLANGCODE2], int Tpid);
+ void SetTeletextSubtitlePages(tTeletextSubtitlePage pages[]);
void SetCaIds(const int *CaIds); // list must be zero-terminated
void SetCaDescriptors(int Level);
void SetLinkChannels(cLinkChannels *LinkChannels);
diff --git a/pat.c b/pat.c
index 9b3ded6..f4be6a6 100644
--- a/pat.c
+++ b/pat.c
@@ -341,6 +341,8 @@ void cPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
char DLangs[MAXDPIDS][MAXLANGCODE2] = { "" };
char SLangs[MAXSPIDS][MAXLANGCODE2] = { "" };
int Tpid = 0;
+ tTeletextSubtitlePage TeletextSubtitlePages[MAXTXTPAGES];
+ int NumTPages = 0;
int NumApids = 0;
int NumDpids = 0;
int NumSpids = 0;
@@ -426,8 +428,21 @@ void cPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
NumSpids++;
}
break;
- case SI::TeletextDescriptorTag:
+ case SI::TeletextDescriptorTag: {
Tpid = esPid;
+ SI::TeletextDescriptor *sd = (SI::TeletextDescriptor *)d;
+ SI::TeletextDescriptor::Teletext ttxt;
+ for (SI::Loop::Iterator it; sd->teletextLoop.getNext(ttxt, it); ) {
+ bool isSubtitlePage = (ttxt.getTeletextType() == 0x02) || (ttxt.getTeletextType() == 0x05);
+ if ((NumTPages < MAXTXTPAGES) && ttxt.languageCode[0] && isSubtitlePage) {
+ strn0cpy(TeletextSubtitlePages[NumTPages].ttxtLanguage, I18nNormalizeLanguageCode(ttxt.languageCode), MAXLANGCODE1);
+ TeletextSubtitlePages[NumTPages].ttxtPage = ttxt.getTeletextPageNumber();
+ TeletextSubtitlePages[NumTPages].ttxtMagazine = ttxt.getTeletextMagazineNumber();
+ TeletextSubtitlePages[NumTPages].ttxtType = ttxt.getTeletextType();
+ NumTPages++;
+ }
+ }
+ }
break;
case SI::ISO639LanguageDescriptorTag: {
SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
@@ -458,6 +473,7 @@ void cPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length
}
if (Setup.UpdateChannels >= 2) {
Channel->SetPids(Vpid, Ppid, Vtype, Apids, ALangs, Dpids, DLangs, Spids, SLangs, Tpid);
+ Channel->SetTeletextSubtitlePages(TeletextSubtitlePages);
Channel->SetCaIds(CaDescriptors->CaIds());
Channel->SetSubtitlingDescriptors(SubtitlingTypes, CompositionPageIds, AncillaryPageIds);
}
diff --git a/receiver.c b/receiver.c
index f922e98..dab95b3 100644
--- a/receiver.c
+++ b/receiver.c
@@ -82,7 +82,7 @@ bool cReceiver::SetPids(const cChannel *Channel)
(Channel->Ppid() == Channel->Vpid() || AddPid(Channel->Ppid())) &&
AddPids(Channel->Apids()) &&
(!Setup.UseDolbyDigital || AddPids(Channel->Dpids())) &&
- AddPids(Channel->Spids());
+ AddPids(Channel->Spids()) && AddPid(Channel->Tpid());
}
return true;
}
diff --git a/remux.c b/remux.c
index 070a06a..869b6e4 100644
--- a/remux.c
+++ b/remux.c
@@ -215,6 +215,29 @@ int cPatPmtGenerator::MakeSubtitlingDescriptor(uchar *Target, const char *Langua
return i;
}
+int cPatPmtGenerator::MakeTeletextDescriptor(uchar *Target, const cChannel *Channel)
+{
+ int i = 0, j = 0;
+ Target[i++] = SI::TeletextDescriptorTag;
+ int l = i;
+ Target[i++] = 0x00; // length
+ for (int n = 0; Channel->TeletextSubtitlePage(n).ttxtType; n++) {
+ const char* Language = Channel->TeletextSubtitlePage(n).ttxtLanguage;
+ Target[i++] = *Language++;
+ Target[i++] = *Language++;
+ Target[i++] = *Language++;
+ Target[i++] = (Channel->TeletextSubtitlePage(n).ttxtType << 3) + Channel->TeletextSubtitlePage(n).ttxtMagazine;
+ Target[i++] = Channel->TeletextSubtitlePage(n).ttxtPage;
+ j++;
+ }
+ if (j > 0) {
+ Target[l] = j * 5; // update length
+ IncEsInfoLength(i);
+ return i;
+ }
+ return 0;
+}
+
int cPatPmtGenerator::MakeLanguageDescriptor(uchar *Target, const char *Language)
{
int i = 0;
@@ -296,6 +319,7 @@ void cPatPmtGenerator::GeneratePmt(const cChannel *Channel)
if (Channel) {
int Vpid = Channel->Vpid();
int Ppid = Channel->Ppid();
+ int Tpid = Channel->Tpid();
uchar *p = buf;
int i = 0;
p[i++] = 0x02; // table id
@@ -330,6 +354,10 @@ void cPatPmtGenerator::GeneratePmt(const cChannel *Channel)
i += MakeStream(buf + i, 0x06, Channel->Spid(n));
i += MakeSubtitlingDescriptor(buf + i, Channel->Slang(n), Channel->SubtitlingType(n), Channel->CompositionPageId(n), Channel->AncillaryPageId(n));
}
+ if (Tpid) {
+ i += MakeStream(buf + i, 0x06, Tpid);
+ i += MakeTeletextDescriptor(buf + i, Channel);
+ }
int sl = i - SectionLength - 2 + 4; // -2 = SectionLength storage, +4 = length of CRC
buf[SectionLength] |= (sl >> 8) & 0x0F;
diff --git a/remux.h b/remux.h
index 1115c4a..cef50d7 100644
--- a/remux.h
+++ b/remux.h
@@ -170,6 +170,7 @@ protected:
int MakeStream(uchar *Target, uchar Type, int Pid);
int MakeAC3Descriptor(uchar *Target);
int MakeSubtitlingDescriptor(uchar *Target, const char *Language, uchar SubtitlingType, uint16_t CompositionPageId, uint16_t AncillaryPageId);
+ int MakeTeletextDescriptor(uchar *Target, const cChannel *Channel);
int MakeLanguageDescriptor(uchar *Target, const char *Language);
int MakeCRC(uchar *Target, const uchar *Data, int Length);
void GeneratePmtPid(const cChannel *Channel);
--
1.6.5
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