mirror of
https://github.com/vdr-projects/vdr.git
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c2c45d68c6
- Added Macedonian language texts (thanks to Dimitar Petrovski). - Updated the Estonian OSD texts (thanks to Arthur Konovalov). - Updated the Finnish OSD texts (thanks to Rolf Ahrenberg). - Added handling of EnhancedAC3DescriptorTag (thanks to Eric Valette). - The default SVDRP port is now 6419 (registered with ICANN/IANA by Christian Tramnitz). Use '-p 2001' to switch back to the old port if necessary. - Updated the Italian OSD texts (thanks to Diego Pierotto). - cDvbDevice::ProvidesTransponder() now checks the modulation capabilities of the device (as far as the driver allows this). - Fixed cFrameDetector::Analyze() in case part of the data has been processed and there is less than MIN_TS_PACKETS_FOR_FRAME_DETECTOR left (reported by Derek Kelly). - Added a note about not deleting cDeviceHook objects to device.h. - Added user defined key kUser0 (suggested by Ulf Kiener). - Include paths are now added instead of overwriting INCLUDES in the Makefile (thanks to Paul Menzel). - The various modulation types are now taken into account when selecting a device for a recording or live viewing, so that devices that provide more capabilities are spared. - Fixed generating PMT language descriptors for multi language PIDs (thanks to Rolf Ahrenberg). - Transponders that use "8psk turbo fec" (a non-standard mode used by North American providers) are now identified by assuming that all 8psk transponders on DVB-S use "turbo fec". In order to determine whether a certain device can handle "turbo fec", the new driver flag FE_CAN_TURBO_FEC is checked. If your device can handle "turbo fec", and your driver doesn't have that flag, yet, you can apply the patch from ftp://ftp.tvdr.de/vdr/Developer/v4l-dvb-add-FE_CAN_TURBO_FEC.diff. A temporary macro in dvbdevice.c defines the flag for all those who don't need this in the driver, so that they can continue using an unmodified driver. Thanks to Derek Kelly for testing this. - Updated the Ukrainian OSD texts (thanks to Yarema Aka Knedlyk). - Fixed handling "none" color entries in XPM files (thanks to Thomas Günther). - Fixed a crash when creating a new channel if the channel list is empty (reported by Halim Sahin). - Updated the Czech OSD texts (thanks to Radek Stastny). - Fixed a possible out of buffer memory access in case of bad TS data (reported by Rolf Ahrenberg). - Implemented handling of HD resolution subtitles according to v1.3.1 of ETSI EN 300 743, chapter 7.2.1 (thanks to Rolf Ahrenberg). - The EPG data now handles stream components 5 (H.264-video) and 6 (HEAAC-audio). - Fixed a problem with external Dolby Digital processing via the '-a' option in live mode and with TS recordings (reported by Christopher Reimer). - Added handling MPEG audio types "ISO/IEC 14496-3 Audio with LATM transport syntax" and "ISO/IEC 13818-7 Audio with ADTS transport syntax" (suggested by Luis Fernandes). See man vdr(5) on how the APID section of channels has been extended to store this information. - Added detecting channels that use service type 0x16. - Added full handling of the stream types of Dolby Digital pids (thanks to Jose Alberto Reguero). - The new setup option "OSD/Number keys for characters" can be used to control whether the number keys can be used to enter characters in a text input field (suggested by Stefan Huskamp).
502 lines
19 KiB
C
502 lines
19 KiB
C
/*
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* pat.c: PAT section filter
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*
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* See the main source file 'vdr.c' for copyright information and
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* how to reach the author.
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*
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* $Id: pat.c 2.11 2010/06/05 13:26:47 kls Exp $
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*/
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#include "pat.h"
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#include <malloc.h>
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#include "channels.h"
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#include "libsi/section.h"
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#include "libsi/descriptor.h"
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#include "thread.h"
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#define PMT_SCAN_TIMEOUT 10 // seconds
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// --- cCaDescriptor ---------------------------------------------------------
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class cCaDescriptor : public cListObject {
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private:
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int caSystem;
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int esPid;
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int length;
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uchar *data;
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public:
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cCaDescriptor(int CaSystem, int CaPid, int EsPid, int Length, const uchar *Data);
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virtual ~cCaDescriptor();
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bool operator== (const cCaDescriptor &arg) const;
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int CaSystem(void) { return caSystem; }
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int EsPid(void) { return esPid; }
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int Length(void) const { return length; }
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const uchar *Data(void) const { return data; }
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};
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cCaDescriptor::cCaDescriptor(int CaSystem, int CaPid, int EsPid, int Length, const uchar *Data)
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{
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caSystem = CaSystem;
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esPid = EsPid;
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length = Length + 6;
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data = MALLOC(uchar, length);
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data[0] = SI::CaDescriptorTag;
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data[1] = length - 2;
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data[2] = (caSystem >> 8) & 0xFF;
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data[3] = caSystem & 0xFF;
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data[4] = ((CaPid >> 8) & 0x1F) | 0xE0;
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data[5] = CaPid & 0xFF;
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if (Length)
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memcpy(&data[6], Data, Length);
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}
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cCaDescriptor::~cCaDescriptor()
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{
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free(data);
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}
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bool cCaDescriptor::operator== (const cCaDescriptor &arg) const
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{
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return esPid == arg.esPid && length == arg.length && memcmp(data, arg.data, length) == 0;
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}
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// --- cCaDescriptors --------------------------------------------------------
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class cCaDescriptors : public cListObject {
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private:
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int source;
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int transponder;
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int serviceId;
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int numCaIds;
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int caIds[MAXCAIDS + 1];
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cList<cCaDescriptor> caDescriptors;
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void AddCaId(int CaId);
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public:
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cCaDescriptors(int Source, int Transponder, int ServiceId);
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bool operator== (const cCaDescriptors &arg) const;
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bool Is(int Source, int Transponder, int ServiceId);
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bool Is(cCaDescriptors * CaDescriptors);
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bool Empty(void) { return caDescriptors.Count() == 0; }
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void AddCaDescriptor(SI::CaDescriptor *d, int EsPid);
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int GetCaDescriptors(const int *CaSystemIds, int BufSize, uchar *Data, int EsPid);
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const int *CaIds(void) { return caIds; }
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};
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cCaDescriptors::cCaDescriptors(int Source, int Transponder, int ServiceId)
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{
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source = Source;
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transponder = Transponder;
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serviceId = ServiceId;
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numCaIds = 0;
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caIds[0] = 0;
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}
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bool cCaDescriptors::operator== (const cCaDescriptors &arg) const
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{
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cCaDescriptor *ca1 = caDescriptors.First();
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cCaDescriptor *ca2 = arg.caDescriptors.First();
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while (ca1 && ca2) {
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if (!(*ca1 == *ca2))
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return false;
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ca1 = caDescriptors.Next(ca1);
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ca2 = arg.caDescriptors.Next(ca2);
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}
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return !ca1 && !ca2;
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}
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bool cCaDescriptors::Is(int Source, int Transponder, int ServiceId)
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{
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return source == Source && transponder == Transponder && serviceId == ServiceId;
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}
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bool cCaDescriptors::Is(cCaDescriptors *CaDescriptors)
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{
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return Is(CaDescriptors->source, CaDescriptors->transponder, CaDescriptors->serviceId);
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}
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void cCaDescriptors::AddCaId(int CaId)
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{
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if (numCaIds < MAXCAIDS) {
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for (int i = 0; i < numCaIds; i++) {
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if (caIds[i] == CaId)
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return;
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}
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caIds[numCaIds++] = CaId;
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caIds[numCaIds] = 0;
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}
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}
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void cCaDescriptors::AddCaDescriptor(SI::CaDescriptor *d, int EsPid)
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{
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cCaDescriptor *nca = new cCaDescriptor(d->getCaType(), d->getCaPid(), EsPid, d->privateData.getLength(), d->privateData.getData());
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for (cCaDescriptor *ca = caDescriptors.First(); ca; ca = caDescriptors.Next(ca)) {
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if (*ca == *nca) {
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delete nca;
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return;
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}
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}
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AddCaId(nca->CaSystem());
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caDescriptors.Add(nca);
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//#define DEBUG_CA_DESCRIPTORS 1
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#ifdef DEBUG_CA_DESCRIPTORS
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char buffer[1024];
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char *q = buffer;
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q += sprintf(q, "CAM: %04X %5d %5d %04X %04X -", source, transponder, serviceId, d->getCaType(), EsPid);
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for (int i = 0; i < nca->Length(); i++)
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q += sprintf(q, " %02X", nca->Data()[i]);
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dsyslog("%s", buffer);
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#endif
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}
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// EsPid is to select the "type" of CaDescriptor to be returned
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// >0 - CaDescriptor for the particular esPid
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// =0 - common CaDescriptor
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// <0 - all CaDescriptors regardless of type (old default)
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int cCaDescriptors::GetCaDescriptors(const int *CaSystemIds, int BufSize, uchar *Data, int EsPid)
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{
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if (!CaSystemIds || !*CaSystemIds)
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return 0;
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if (BufSize > 0 && Data) {
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int length = 0;
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for (cCaDescriptor *d = caDescriptors.First(); d; d = caDescriptors.Next(d)) {
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if (EsPid < 0 || d->EsPid() == EsPid) {
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const int *caids = CaSystemIds;
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do {
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if (d->CaSystem() == *caids) {
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if (length + d->Length() <= BufSize) {
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memcpy(Data + length, d->Data(), d->Length());
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length += d->Length();
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}
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else
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return -1;
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}
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} while (*++caids);
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}
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}
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return length;
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}
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return -1;
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}
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// --- cCaDescriptorHandler --------------------------------------------------
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class cCaDescriptorHandler : public cList<cCaDescriptors> {
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private:
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cMutex mutex;
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public:
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int AddCaDescriptors(cCaDescriptors *CaDescriptors);
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// Returns 0 if this is an already known descriptor,
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// 1 if it is an all new descriptor with actual contents,
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// and 2 if an existing descriptor was changed.
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int GetCaDescriptors(int Source, int Transponder, int ServiceId, const int *CaSystemIds, int BufSize, uchar *Data, int EsPid);
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};
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int cCaDescriptorHandler::AddCaDescriptors(cCaDescriptors *CaDescriptors)
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{
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cMutexLock MutexLock(&mutex);
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for (cCaDescriptors *ca = First(); ca; ca = Next(ca)) {
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if (ca->Is(CaDescriptors)) {
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if (*ca == *CaDescriptors) {
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delete CaDescriptors;
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return 0;
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}
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Del(ca);
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Add(CaDescriptors);
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return 2;
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}
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}
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Add(CaDescriptors);
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return CaDescriptors->Empty() ? 0 : 1;
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}
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int cCaDescriptorHandler::GetCaDescriptors(int Source, int Transponder, int ServiceId, const int *CaSystemIds, int BufSize, uchar *Data, int EsPid)
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{
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cMutexLock MutexLock(&mutex);
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for (cCaDescriptors *ca = First(); ca; ca = Next(ca)) {
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if (ca->Is(Source, Transponder, ServiceId))
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return ca->GetCaDescriptors(CaSystemIds, BufSize, Data, EsPid);
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}
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return 0;
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}
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cCaDescriptorHandler CaDescriptorHandler;
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int GetCaDescriptors(int Source, int Transponder, int ServiceId, const int *CaSystemIds, int BufSize, uchar *Data, int EsPid)
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{
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return CaDescriptorHandler.GetCaDescriptors(Source, Transponder, ServiceId, CaSystemIds, BufSize, Data, EsPid);
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}
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// --- cPatFilter ------------------------------------------------------------
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cPatFilter::cPatFilter(void)
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{
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pmtIndex = 0;
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pmtPid = 0;
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pmtSid = 0;
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lastPmtScan = 0;
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numPmtEntries = 0;
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Set(0x00, 0x00); // PAT
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}
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void cPatFilter::SetStatus(bool On)
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{
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cFilter::SetStatus(On);
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pmtIndex = 0;
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pmtPid = 0;
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pmtSid = 0;
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lastPmtScan = 0;
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numPmtEntries = 0;
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}
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void cPatFilter::Trigger(void)
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{
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numPmtEntries = 0;
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}
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bool cPatFilter::PmtVersionChanged(int PmtPid, int Sid, int Version)
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{
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uint64_t v = Version;
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v <<= 32;
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uint64_t id = (PmtPid | (Sid << 16)) & 0x00000000FFFFFFFFLL;
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for (int i = 0; i < numPmtEntries; i++) {
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if ((pmtVersion[i] & 0x00000000FFFFFFFFLL) == id) {
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bool Changed = (pmtVersion[i] & 0x000000FF00000000LL) != v;
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if (Changed)
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pmtVersion[i] = id | v;
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return Changed;
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}
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}
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if (numPmtEntries < MAXPMTENTRIES)
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pmtVersion[numPmtEntries++] = id | v;
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return true;
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}
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void cPatFilter::Process(u_short Pid, u_char Tid, const u_char *Data, int Length)
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{
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if (Pid == 0x00) {
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if (Tid == 0x00) {
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if (pmtPid && time(NULL) - lastPmtScan > PMT_SCAN_TIMEOUT) {
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Del(pmtPid, 0x02);
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pmtPid = 0;
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pmtIndex++;
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lastPmtScan = time(NULL);
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}
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if (!pmtPid) {
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SI::PAT pat(Data, false);
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if (!pat.CheckCRCAndParse())
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return;
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SI::PAT::Association assoc;
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int Index = 0;
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for (SI::Loop::Iterator it; pat.associationLoop.getNext(assoc, it); ) {
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if (!assoc.isNITPid()) {
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if (Index++ >= pmtIndex && Channels.GetByServiceID(Source(), Transponder(), assoc.getServiceId())) {
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pmtPid = assoc.getPid();
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pmtSid = assoc.getServiceId();
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Add(pmtPid, 0x02);
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break;
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}
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}
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}
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if (!pmtPid)
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pmtIndex = 0;
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}
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}
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}
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else if (Pid == pmtPid && Tid == SI::TableIdPMT && Source() && Transponder()) {
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SI::PMT pmt(Data, false);
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if (!pmt.CheckCRCAndParse())
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return;
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if (pmt.getServiceId() != pmtSid)
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return; // skip broken PMT records
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if (!PmtVersionChanged(pmtPid, pmt.getTableIdExtension(), pmt.getVersionNumber())) {
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lastPmtScan = 0; // this triggers the next scan
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return;
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}
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if (!Channels.Lock(true, 10)) {
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numPmtEntries = 0; // to make sure we try again
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return;
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}
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cChannel *Channel = Channels.GetByServiceID(Source(), Transponder(), pmt.getServiceId());
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if (Channel) {
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SI::CaDescriptor *d;
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cCaDescriptors *CaDescriptors = new cCaDescriptors(Channel->Source(), Channel->Transponder(), Channel->Sid());
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// Scan the common loop:
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for (SI::Loop::Iterator it; (d = (SI::CaDescriptor*)pmt.commonDescriptors.getNext(it, SI::CaDescriptorTag)); ) {
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CaDescriptors->AddCaDescriptor(d, 0);
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delete d;
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}
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// Scan the stream-specific loop:
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SI::PMT::Stream stream;
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int Vpid = 0;
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int Ppid = 0;
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int Vtype = 0;
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int Apids[MAXAPIDS + 1] = { 0 }; // these lists are zero-terminated
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int Atypes[MAXDPIDS + 1] = { 0 };
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int Dpids[MAXDPIDS + 1] = { 0 };
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int Dtypes[MAXDPIDS + 1] = { 0 };
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int Spids[MAXSPIDS + 1] = { 0 };
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uchar SubtitlingTypes[MAXSPIDS + 1] = { 0 };
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uint16_t CompositionPageIds[MAXSPIDS + 1] = { 0 };
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uint16_t AncillaryPageIds[MAXSPIDS + 1] = { 0 };
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char ALangs[MAXAPIDS][MAXLANGCODE2] = { "" };
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char DLangs[MAXDPIDS][MAXLANGCODE2] = { "" };
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char SLangs[MAXSPIDS][MAXLANGCODE2] = { "" };
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int Tpid = 0;
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int NumApids = 0;
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int NumDpids = 0;
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int NumSpids = 0;
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for (SI::Loop::Iterator it; pmt.streamLoop.getNext(stream, it); ) {
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bool ProcessCaDescriptors = false;
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int esPid = stream.getPid();
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switch (stream.getStreamType()) {
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case 1: // STREAMTYPE_11172_VIDEO
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case 2: // STREAMTYPE_13818_VIDEO
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case 0x1B: // MPEG4
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Vpid = esPid;
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Ppid = pmt.getPCRPid();
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Vtype = stream.getStreamType();
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ProcessCaDescriptors = true;
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break;
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case 3: // STREAMTYPE_11172_AUDIO
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case 4: // STREAMTYPE_13818_AUDIO
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case 0x0F: // ISO/IEC 13818-7 Audio with ADTS transport sytax
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case 0x11: // ISO/IEC 14496-3 Audio with LATM transport syntax
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{
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if (NumApids < MAXAPIDS) {
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Apids[NumApids] = esPid;
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Atypes[NumApids] = stream.getStreamType();
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SI::Descriptor *d;
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for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
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switch (d->getDescriptorTag()) {
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case SI::ISO639LanguageDescriptorTag: {
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SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
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SI::ISO639LanguageDescriptor::Language l;
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char *s = ALangs[NumApids];
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int n = 0;
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for (SI::Loop::Iterator it; ld->languageLoop.getNext(l, it); ) {
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if (*ld->languageCode != '-') { // some use "---" to indicate "none"
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if (n > 0)
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*s++ = '+';
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strn0cpy(s, I18nNormalizeLanguageCode(l.languageCode), MAXLANGCODE1);
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s += strlen(s);
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if (n++ > 1)
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break;
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}
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}
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}
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break;
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default: ;
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}
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delete d;
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}
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NumApids++;
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}
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ProcessCaDescriptors = true;
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}
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break;
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case 5: // STREAMTYPE_13818_PRIVATE
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case 6: // STREAMTYPE_13818_PES_PRIVATE
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//XXX case 8: // STREAMTYPE_13818_DSMCC
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{
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int dpid = 0;
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int dtype = 0;
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char lang[MAXLANGCODE1] = { 0 };
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SI::Descriptor *d;
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for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
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switch (d->getDescriptorTag()) {
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case SI::AC3DescriptorTag:
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case SI::EnhancedAC3DescriptorTag:
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dpid = esPid;
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dtype = d->getDescriptorTag();
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ProcessCaDescriptors = true;
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break;
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case SI::SubtitlingDescriptorTag:
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if (NumSpids < MAXSPIDS) {
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Spids[NumSpids] = esPid;
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SI::SubtitlingDescriptor *sd = (SI::SubtitlingDescriptor *)d;
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SI::SubtitlingDescriptor::Subtitling sub;
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char *s = SLangs[NumSpids];
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int n = 0;
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for (SI::Loop::Iterator it; sd->subtitlingLoop.getNext(sub, it); ) {
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if (sub.languageCode[0]) {
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SubtitlingTypes[NumSpids] = sub.getSubtitlingType();
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CompositionPageIds[NumSpids] = sub.getCompositionPageId();
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AncillaryPageIds[NumSpids] = sub.getAncillaryPageId();
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if (n > 0)
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*s++ = '+';
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strn0cpy(s, I18nNormalizeLanguageCode(sub.languageCode), MAXLANGCODE1);
|
|
s += strlen(s);
|
|
if (n++ > 1)
|
|
break;
|
|
}
|
|
}
|
|
NumSpids++;
|
|
}
|
|
break;
|
|
case SI::TeletextDescriptorTag:
|
|
Tpid = esPid;
|
|
break;
|
|
case SI::ISO639LanguageDescriptorTag: {
|
|
SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
|
|
strn0cpy(lang, I18nNormalizeLanguageCode(ld->languageCode), MAXLANGCODE1);
|
|
}
|
|
break;
|
|
default: ;
|
|
}
|
|
delete d;
|
|
}
|
|
if (dpid) {
|
|
if (NumDpids < MAXDPIDS) {
|
|
Dpids[NumDpids] = dpid;
|
|
Dtypes[NumDpids] = dtype;
|
|
strn0cpy(DLangs[NumDpids], lang, MAXLANGCODE1);
|
|
NumDpids++;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case 0x81: // STREAMTYPE_USER_PRIVATE
|
|
if (Channel->IsAtsc()) { // ATSC AC-3
|
|
char lang[MAXLANGCODE1] = { 0 };
|
|
SI::Descriptor *d;
|
|
for (SI::Loop::Iterator it; (d = stream.streamDescriptors.getNext(it)); ) {
|
|
switch (d->getDescriptorTag()) {
|
|
case SI::ISO639LanguageDescriptorTag: {
|
|
SI::ISO639LanguageDescriptor *ld = (SI::ISO639LanguageDescriptor *)d;
|
|
strn0cpy(lang, I18nNormalizeLanguageCode(ld->languageCode), MAXLANGCODE1);
|
|
}
|
|
break;
|
|
default: ;
|
|
}
|
|
delete d;
|
|
}
|
|
if (NumDpids < MAXDPIDS) {
|
|
Dpids[NumDpids] = esPid;
|
|
strn0cpy(DLangs[NumDpids], lang, MAXLANGCODE1);
|
|
NumDpids++;
|
|
}
|
|
ProcessCaDescriptors = true;
|
|
}
|
|
break;
|
|
default: ;//printf("PID: %5d %5d %2d %3d %3d\n", pmt.getServiceId(), stream.getPid(), stream.getStreamType(), pmt.getVersionNumber(), Channel->Number());
|
|
}
|
|
if (ProcessCaDescriptors) {
|
|
for (SI::Loop::Iterator it; (d = (SI::CaDescriptor*)stream.streamDescriptors.getNext(it, SI::CaDescriptorTag)); ) {
|
|
CaDescriptors->AddCaDescriptor(d, esPid);
|
|
delete d;
|
|
}
|
|
}
|
|
}
|
|
if (Setup.UpdateChannels >= 2) {
|
|
Channel->SetPids(Vpid, Ppid, Vtype, Apids, Atypes, ALangs, Dpids, Dtypes, DLangs, Spids, SLangs, Tpid);
|
|
Channel->SetCaIds(CaDescriptors->CaIds());
|
|
Channel->SetSubtitlingDescriptors(SubtitlingTypes, CompositionPageIds, AncillaryPageIds);
|
|
}
|
|
Channel->SetCaDescriptors(CaDescriptorHandler.AddCaDescriptors(CaDescriptors));
|
|
}
|
|
lastPmtScan = 0; // this triggers the next scan
|
|
Channels.Unlock();
|
|
}
|
|
}
|