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mpegstreamdata.h
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mpegstreamdata.h
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// -*- Mode: c++ -*-
// Copyright (c) 2003-2004, Daniel Thor Kristjansson
#ifndef MPEGSTREAMDATA_H_
#define MPEGSTREAMDATA_H_
// POSIX
#include <stdint.h> // uint64_t
// C++
#include <vector>
using namespace std;
// Qt
#include <QMap>
#include "tspacket.h"
#include "mythtimer.h"
#include "streamlisteners.h"
#include "eitscanner.h"
#include "mythtvexp.h"
class EITHelper;
class PSIPTable;
class RingBuffer;
typedef vector<uint> uint_vec_t;
typedef QMap<unsigned int, PSIPTable*> pid_psip_map_t;
typedef QMap<const PSIPTable*, int> psip_refcnt_map_t;
typedef ProgramAssociationTable* pat_ptr_t;
typedef ProgramAssociationTable const* pat_const_ptr_t;
typedef vector<const ProgramAssociationTable*> pat_vec_t;
typedef QMap<uint, pat_vec_t> pat_map_t;
typedef QMap<uint, ProgramAssociationTable*> pat_cache_t;
typedef ConditionalAccessTable* cat_ptr_t;
typedef ConditionalAccessTable const* cat_const_ptr_t;
typedef vector<const ConditionalAccessTable*> cat_vec_t;
typedef QMap<uint, cat_vec_t> cat_map_t;
typedef QMap<uint, ConditionalAccessTable*> cat_cache_t;
typedef ProgramMapTable* pmt_ptr_t;
typedef ProgramMapTable const* pmt_const_ptr_t;
typedef vector<const ProgramMapTable*> pmt_vec_t;
typedef QMap<uint, pmt_vec_t> pmt_map_t;
typedef QMap<uint, ProgramMapTable*> pmt_cache_t;
typedef vector<unsigned char> uchar_vec_t;
typedef uchar_vec_t sections_t;
typedef QMap<uint, sections_t> sections_map_t;
typedef vector<MPEGStreamListener*> mpeg_listener_vec_t;
typedef vector<TSPacketListener*> ts_listener_vec_t;
typedef vector<TSPacketListenerAV*> ts_av_listener_vec_t;
typedef vector<MPEGSingleProgramStreamListener*> mpeg_sp_listener_vec_t;
typedef enum
{
kEncUnknown = 0,
kEncDecrypted = 1,
kEncEncrypted = 2,
} CryptStatus;
class MTV_PUBLIC CryptInfo
{
public:
CryptInfo() :
status(kEncUnknown), encrypted_packets(0), decrypted_packets(0),
encrypted_min(1000), decrypted_min(8) { }
CryptInfo(uint e, uint d) :
status(kEncUnknown), encrypted_packets(0), decrypted_packets(0),
encrypted_min(e), decrypted_min(d) { }
public:
CryptStatus status;
uint encrypted_packets;
uint decrypted_packets;
uint encrypted_min;
uint decrypted_min;
};
void init_sections(sections_t §, uint last_section);
typedef enum
{
kPIDPriorityNone = 0,
kPIDPriorityLow = 1,
kPIDPriorityNormal = 2,
kPIDPriorityHigh = 3,
} PIDPriority;
typedef QMap<uint, PIDPriority> pid_map_t;
class MTV_PUBLIC MPEGStreamData : public EITSource
{
public:
MPEGStreamData(int desiredProgram, bool cacheTables);
virtual ~MPEGStreamData();
void SetCaching(bool cacheTables) { _cache_tables = cacheTables; }
void SetListeningDisabled(bool lt) { _listening_disabled = lt; }
virtual void Reset(void) { MPEGStreamData::ResetMPEG(-1); }
virtual void ResetMPEG(int desiredProgram);
/// \brief Current Offset from computer time to DVB time in seconds
double TimeOffset(void) const;
// EIT Source
virtual void SetEITHelper(EITHelper *eit_helper);
virtual void SetEITRate(float rate);
virtual bool HasEITPIDChanges(const uint_vec_t& /*in_use_pids*/) const
{ return false; }
virtual bool GetEITPIDChanges(const uint_vec_t& /*in_use_pids*/,
uint_vec_t& /*add_pids*/,
uint_vec_t& /*del_pids*/) const
{ return false; }
// Table processing
void SetIgnoreCRC(bool haveCRCbug) { _have_CRC_bug = haveCRCbug; }
virtual bool IsRedundant(uint pid, const PSIPTable&) const;
virtual bool HandleTables(uint pid, const PSIPTable &psip);
virtual void HandleTSTables(const TSPacket* tspacket);
virtual bool ProcessTSPacket(const TSPacket& tspacket);
virtual int ProcessData(const unsigned char *buffer, int len);
inline void HandleAdaptationFieldControl(const TSPacket* tspacket);
// Listening
virtual void AddListeningPID(
uint pid, PIDPriority priority = kPIDPriorityNormal)
{ _pids_listening[pid] = priority; }
virtual void AddNotListeningPID(uint pid)
{ _pids_notlistening[pid] = kPIDPriorityNormal; }
virtual void AddWritingPID(
uint pid, PIDPriority priority = kPIDPriorityHigh)
{ _pids_writing[pid] = priority; }
virtual void AddAudioPID(
uint pid, PIDPriority priority = kPIDPriorityHigh)
{ _pids_audio[pid] = priority; }
virtual void RemoveListeningPID(uint pid) { _pids_listening.remove(pid); }
virtual void RemoveNotListeningPID(uint pid)
{ _pids_notlistening.remove(pid); }
virtual void RemoveWritingPID(uint pid) { _pids_writing.remove(pid); }
virtual void RemoveAudioPID(uint pid) { _pids_audio.remove(pid); }
virtual bool IsListeningPID(uint pid) const;
virtual bool IsNotListeningPID(uint pid) const;
virtual bool IsWritingPID(uint pid) const;
bool IsVideoPID(uint pid) const
{ return _pid_video_single_program == pid; }
virtual bool IsAudioPID(uint pid) const;
const pid_map_t& ListeningPIDs(void) const
{ return _pids_listening; }
const pid_map_t& AudioPIDs(void) const
{ return _pids_audio; }
const pid_map_t& WritingPIDs(void) const
{ return _pids_writing; }
uint GetPIDs(pid_map_t&) const;
// PID Priorities
PIDPriority GetPIDPriority(uint pid) const;
// Table versions
void SetVersionPAT(uint tsid, int version, uint last_section)
{
if (VersionPAT(tsid) == version)
return;
_pat_version[tsid] = version;
init_sections(_pat_section_seen[tsid], last_section);
}
int VersionPAT(uint tsid) const
{
const QMap<uint, int>::const_iterator it = _pat_version.find(tsid);
if (it == _pat_version.end())
return -1;
return *it;
}
void SetVersionCAT(uint tsid, int version, uint last_section)
{
if (VersionCAT(tsid) == version)
return;
_cat_version[tsid] = version;
init_sections(_cat_section_seen[tsid], last_section);
}
int VersionCAT(uint tsid) const
{
const QMap<uint, int>::const_iterator it = _cat_version.find(tsid);
if (it == _cat_version.end())
return -1;
return *it;
}
void SetVersionPMT(uint program_num, int version, uint last_section)
{
if (VersionPMT(program_num) == version)
return;
_pmt_version[program_num] = version;
init_sections(_pmt_section_seen[program_num], last_section);
}
int VersionPMT(uint prog_num) const
{
const QMap<uint, int>::const_iterator it = _pmt_version.find(prog_num);
if (it == _pmt_version.end())
return -1;
return *it;
}
// Sections seen
void SetPATSectionSeen(uint tsid, uint section);
bool PATSectionSeen( uint tsid, uint section) const;
bool HasAllPATSections(uint tsid) const;
void SetCATSectionSeen(uint tsid, uint section);
bool CATSectionSeen( uint tsid, uint section) const;
bool HasAllCATSections(uint tsid) const;
void SetPMTSectionSeen(uint prog_num, uint section);
bool PMTSectionSeen( uint prog_num, uint section) const;
bool HasAllPMTSections(uint prog_num) const;
// Caching
bool HasProgram(uint progNum) const;
bool HasCachedAllPAT(uint tsid) const;
bool HasCachedAnyPAT(uint tsid) const;
bool HasCachedAnyPAT(void) const;
bool HasCachedAllCAT(uint tsid) const;
bool HasCachedAnyCAT(uint tsid) const;
bool HasCachedAnyCAT(void) const;
bool HasCachedAllPMT(uint program_num) const;
bool HasCachedAnyPMT(uint program_num) const;
bool HasCachedAllPMTs(void) const;
bool HasCachedAnyPMTs(void) const;
pat_const_ptr_t GetCachedPAT(uint tsid, uint section_num) const;
pat_vec_t GetCachedPATs(uint tsid) const;
pat_vec_t GetCachedPATs(void) const;
pat_map_t GetCachedPATMap(void) const;
cat_const_ptr_t GetCachedCAT(uint tsid, uint section_num) const;
cat_vec_t GetCachedCATs(uint tsid) const;
cat_vec_t GetCachedCATs(void) const;
cat_map_t GetCachedCATMap(void) const;
pmt_const_ptr_t GetCachedPMT(uint program_num, uint section_num) const;
pmt_vec_t GetCachedPMTs(void) const;
pmt_map_t GetCachedPMTMap(void) const;
virtual void ReturnCachedTable(const PSIPTable *psip) const;
virtual void ReturnCachedPATTables(pat_vec_t&) const;
virtual void ReturnCachedPATTables(pat_map_t&) const;
virtual void ReturnCachedCATTables(cat_vec_t&) const;
virtual void ReturnCachedCATTables(cat_map_t&) const;
virtual void ReturnCachedPMTTables(pmt_vec_t&) const;
virtual void ReturnCachedPMTTables(pmt_map_t&) const;
// Encryption Monitoring
void AddEncryptionTestPID(uint pnum, uint pid, bool isvideo);
void RemoveEncryptionTestPIDs(uint pnum);
bool IsEncryptionTestPID(uint pid) const;
void TestDecryption(const ProgramMapTable* pmt);
void ResetDecryptionMonitoringState(void);
bool IsProgramDecrypted(uint pnum) const;
bool IsProgramEncrypted(uint pnum) const;
// "signals"
void AddMPEGListener(MPEGStreamListener*);
void RemoveMPEGListener(MPEGStreamListener*);
void UpdatePAT(const ProgramAssociationTable*);
void UpdateCAT(const ConditionalAccessTable*);
void UpdatePMT(uint program_num, const ProgramMapTable*);
void AddWritingListener(TSPacketListener*);
void RemoveWritingListener(TSPacketListener*);
// Single Program Stuff, signals with processed tables
void AddMPEGSPListener(MPEGSingleProgramStreamListener*);
void RemoveMPEGSPListener(MPEGSingleProgramStreamListener*);
void AddAVListener(TSPacketListenerAV*);
void RemoveAVListener(TSPacketListenerAV*);
void UpdatePATSingleProgram(ProgramAssociationTable*);
void UpdatePMTSingleProgram(ProgramMapTable*);
public:
// Single program stuff, sets
void SetDesiredProgram(int p, int cardid);
inline void SetPATSingleProgram(ProgramAssociationTable*);
inline void SetPMTSingleProgram(ProgramMapTable*);
void SetVideoStreamsRequired(uint num)
{ _pmt_single_program_num_video = num; }
uint GetVideoStreamsRequired() const
{ return _pmt_single_program_num_video; }
void SetAudioStreamsRequired(uint num)
{ _pmt_single_program_num_audio = num; }
uint GetAudioStreamsRequired() const
{ return _pmt_single_program_num_audio; }
void SetRecordingType(const QString &recording_type);
// Single program stuff, gets
int DesiredProgram(void) const { return _desired_program; }
uint VideoPIDSingleProgram(void) const { return _pid_video_single_program; }
QString GetRecordingType(void) const;
const ProgramAssociationTable* PATSingleProgram(void) const
{ return _pat_single_program; }
const ProgramMapTable* PMTSingleProgram(void) const
{ return _pmt_single_program; }
ProgramAssociationTable* PATSingleProgram(void)
{ return _pat_single_program; }
ProgramMapTable* PMTSingleProgram(void)
{ return _pmt_single_program; }
// Single program stuff, mostly used internally
int VersionPATSingleProgram(void) const;
int VersionPMTSingleProgram(void) const;
bool CreatePATSingleProgram(const ProgramAssociationTable&);
bool CreatePMTSingleProgram(const ProgramMapTable&);
protected:
// Table processing -- for internal use
PSIPTable* AssemblePSIP(const TSPacket* tspacket, bool& moreTablePackets);
bool AssemblePSIP(PSIPTable& psip, TSPacket* tspacket);
void SavePartialPSIP(uint pid, PSIPTable* packet);
PSIPTable* GetPartialPSIP(uint pid)
{ return _partial_psip_packet_cache[pid]; }
void ClearPartialPSIP(uint pid)
{ _partial_psip_packet_cache.remove(pid); }
void DeletePartialPSIP(uint pid);
void ProcessPAT(const ProgramAssociationTable *pat);
void ProcessCAT(const ConditionalAccessTable *cat);
void ProcessPMT(const ProgramMapTable *pmt);
void ProcessEncryptedPacket(const TSPacket&);
static int ResyncStream(const unsigned char *buffer, int curr_pos, int len);
void UpdateTimeOffset(uint64_t si_utc_time);
// Caching
void IncrementRefCnt(const PSIPTable *psip) const;
virtual bool DeleteCachedTable(PSIPTable *psip) const;
void CachePAT(const ProgramAssociationTable *pat);
void CacheCAT(const ConditionalAccessTable *pat);
void CachePMT(const ProgramMapTable *pmt);
protected:
QString _sistandard;
bool _have_CRC_bug;
mutable QMutex _si_time_lock;
uint _si_time_offset_cnt;
uint _si_time_offset_indx;
double _si_time_offsets[16];
// Generic EIT stuff used for ATSC and DVB
EITHelper *_eit_helper;
float _eit_rate;
// Listening
pid_map_t _pids_listening;
pid_map_t _pids_notlistening;
pid_map_t _pids_writing;
pid_map_t _pids_audio;
bool _listening_disabled;
// Encryption monitoring
mutable QMutex _encryption_lock;
QMap<uint, CryptInfo> _encryption_pid_to_info;
QMap<uint, uint_vec_t> _encryption_pnum_to_pids;
QMap<uint, uint_vec_t> _encryption_pid_to_pnums;
QMap<uint, CryptStatus> _encryption_pnum_to_status;
// Signals
mutable QMutex _listener_lock;
mpeg_listener_vec_t _mpeg_listeners;
mpeg_sp_listener_vec_t _mpeg_sp_listeners;
ts_listener_vec_t _ts_writing_listeners;
ts_av_listener_vec_t _ts_av_listeners;
// Table versions
QMap<uint, int> _pat_version;
QMap<uint, int> _cat_version;
QMap<uint, int> _pmt_version;
sections_map_t _pat_section_seen;
sections_map_t _cat_section_seen;
sections_map_t _pmt_section_seen;
// PSIP construction
pid_psip_map_t _partial_psip_packet_cache;
// Caching
bool _cache_tables;
mutable QMutex _cache_lock;
mutable pat_cache_t _cached_pats;
mutable cat_cache_t _cached_cats;
mutable pmt_cache_t _cached_pmts;
mutable psip_refcnt_map_t _cached_ref_cnt;
mutable psip_refcnt_map_t _cached_slated_for_deletion;
// Single program variables
int _desired_program;
QString _recording_type;
bool _strip_pmt_descriptors;
bool _normalize_stream_type;
uint _pid_video_single_program;
uint _pid_pmt_single_program;
uint _pmt_single_program_num_video;
uint _pmt_single_program_num_audio;
ProgramAssociationTable *_pat_single_program;
ProgramMapTable *_pmt_single_program;
// PAT Timeout handling.
private:
bool _invalid_pat_seen;
bool _invalid_pat_warning;
MythTimer _invalid_pat_timer;
protected:
static const unsigned char bit_sel[8];
};
#include "mpegtables.h"
inline void MPEGStreamData::SetPATSingleProgram(ProgramAssociationTable* pat)
{
if (_pat_single_program)
delete _pat_single_program;
_pat_single_program = pat;
}
inline void MPEGStreamData::SetPMTSingleProgram(ProgramMapTable* pmt)
{
if (_pmt_single_program)
delete _pmt_single_program;
_pmt_single_program = pmt;
}
inline int MPEGStreamData::VersionPATSingleProgram() const
{
return (_pat_single_program) ? int(_pat_single_program->Version()) : -1;
}
inline int MPEGStreamData::VersionPMTSingleProgram() const
{
return (_pmt_single_program) ? int(_pmt_single_program->Version()) : -1;
}
inline void MPEGStreamData::HandleAdaptationFieldControl(const TSPacket*)
{
// TODO
//AdaptationFieldControl afc(tspacket.data()+4);
}
#endif