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DTVRecorder Class Reference

This is a specialization of RecorderBase used to handle MPEG-2, MPEG-4, MPEG-4 AVC, DVB and ATSC streams. More...

#include <dtvrecorder.h>

Inheritance diagram for DTVRecorder:
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Collaboration diagram for DTVRecorder:
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Public Member Functions

 DTVRecorder (TVRec *rec)
 
 ~DTVRecorder () override
 
void SetOption (const QString &name, const QString &value) override
 Set an specific option. More...
 
void SetOption (const QString &name, int value) override
 handles the "wait_for_seqstart" option. More...
 
void SetOptionsFromProfile (RecordingProfile *profile, const QString &videodev, const QString &audiodev, const QString &vbidev) override
 Sets basic recorder options. More...
 
bool IsErrored (void) override
 Tells us whether an unrecoverable error has been encountered. More...
 
long long GetFramesWritten (void) override
 Returns number of frames written to disk. More...
 
void SetVideoFilters (QString &) override
 Tells recorder which filters to use. More...
 
void Initialize (void) override
 This is called between SetOptionsFromProfile() and run() to initialize any devices, etc. More...
 
int GetVideoFd (void) override
 Returns file descriptor of recorder device. More...
 
virtual void SetStreamData (MPEGStreamData *data)
 
MPEGStreamDataGetStreamData (void) const
 
void Reset (void) override
 Reset the recorder to the startup state. More...
 
void ClearStatistics (void) override
 
RecordingQualityGetRecordingQuality (const RecordingInfo *r) const override
 Returns a report about the current recordings quality. More...
 
void HandlePAT (const ProgramAssociationTable *_pat) override
 
void HandleCAT (const ConditionalAccessTable *) override
 
void HandlePMT (uint progNum, const ProgramMapTable *_pmt) override
 
void HandleEncryptionStatus (uint, bool) override
 
void HandleSingleProgramPAT (ProgramAssociationTable *pat, bool insert) override
 
void HandleSingleProgramPMT (ProgramMapTable *pmt, bool insert) override
 
void HandleSTT (const SystemTimeTable *) override
 
void HandleVCT (uint, const VirtualChannelTable *) override
 
void HandleMGT (const MasterGuideTable *) override
 
void HandleTDT (const TimeDateTable *) override
 
void HandleNIT (const NetworkInformationTable *) override
 
void HandleSDT (uint, const ServiceDescriptionTable *) override
 
bool ProcessTSPacket (const TSPacket &tspacket) override
 
bool ProcessVideoTSPacket (const TSPacket &tspacket) override
 
bool ProcessAudioTSPacket (const TSPacket &tspacket) override
 
bool ProcessAVTSPacket (const TSPacket &tspacket)
 Common code for processing either audio or video packets. More...
 
- Public Member Functions inherited from RecorderBase
 RecorderBase (TVRec *rec)
 
 ~RecorderBase () override
 
void SetFrameRate (double rate)
 Sets the video frame rate. More...
 
void SetRecording (const RecordingInfo *pginfo)
 Changes the Recording from the one set initially with SetOptionsFromProfile(). More...
 
void SetRingBuffer (RingBuffer *rbuf)
 Tells recorder to use an externally created ringbuffer. More...
 
void SetBoolOption (const QString &name, bool value)
 Set an specific boolean option. More...
 
void SetNextRecording (const RecordingInfo *ri, RingBuffer *rb)
 Sets next recording info, to be applied as soon as practical. More...
 
void run (void) override=0
 run() starts the recording process, and does not exit until the recording is complete. More...
 
long long GetKeyframePosition (long long desired) const
 Returns closest keyframe position before the desired frame. More...
 
bool GetKeyframePositions (long long start, long long end, frm_pos_map_t &map) const
 
bool GetKeyframeDurations (long long start, long long end, frm_pos_map_t &map) const
 
virtual void StopRecording (void)
 StopRecording() signals to the recorder that it should stop recording and exit cleanly. More...
 
virtual bool IsRecording (void)
 Tells whether the StartRecorder() loop is running. More...
 
virtual bool IsRecordingRequested (void)
 Tells us if StopRecording() has been called. More...
 
virtual void Pause (bool clear=true)
 Pause tells recorder to pause, it should not block. More...
 
virtual void Unpause (void)
 Unpause tells recorder to unpause. More...
 
virtual bool IsPaused (bool holding_lock=false) const
 Returns true iff recorder is paused. More...
 
virtual bool WaitForPause (int timeout=1000)
 WaitForPause blocks until recorder is actually paused, or timeout milliseconds elapse. More...
 
double GetFrameRate (void) const
 Returns the latest frame rate. More...
 
virtual bool CheckForRingBufferSwitch (void)
 If requested, switch to new RingBuffer/ProgramInfo objects. More...
 
void SavePositionMap (bool force=false, bool finished=false)
 Save the seektable to the DB. More...
 
- Public Member Functions inherited from MPEGStreamListener
virtual void HandleSplice (const SpliceInformationTable *)
 

Protected Member Functions

virtual void InitStreamData (void)
 
void FinishRecording (void) override
 Flushes the ringbuffer, and if this is not a live LiveTV recording saves the position map and filesize. More...
 
void ResetForNewFile (void) override
 
void HandleKeyframe (int64_t extra)
 This save the current frame to the position maps and handles ringbuffer switching. More...
 
void HandleTimestamps (int stream_id, int64_t pts, int64_t dts)
 
void UpdateFramesWritten (void)
 
void BufferedWrite (const TSPacket &tspacket, bool insert=false)
 
bool FindAudioKeyframes (const TSPacket *tspacket)
 
bool FindMPEG2Keyframes (const TSPacket *tspacket)
 Locates the keyframes and saves them to the position map. More...
 
bool FindH264Keyframes (const TSPacket *tspacket)
 This searches the TS packet to identify keyframes. More...
 
void HandleH264Keyframe (void)
 This save the current frame to the position maps and handles ringbuffer switching. More...
 
void FindPSKeyFrames (const uint8_t *buffer, uint len) override
 
bool FindOtherKeyframes (const TSPacket *tspacket)
 Non-Audio/Video data. More...
 
bool CheckCC (uint pid, uint new_cnt)
 
virtual QString GetSIStandard (void) const
 
virtual void SetCAMPMT (const ProgramMapTable *)
 
virtual void UpdateCAMTimeOffset (void)
 
- Protected Member Functions inherited from RecorderBase
void SetIntOption (RecordingProfile *profile, const QString &name)
 Convenience function used to set integer options from a profile. More...
 
void SetStrOption (RecordingProfile *profile, const QString &name)
 Convenience function used to set QString options from a profile. More...
 
virtual bool PauseAndWait (int timeout=100)
 If m_requestPause is true, sets pause and blocks up to timeout milliseconds or until unpaused, whichever is sooner. More...
 
virtual void SetRecordingStatus (RecStatus::Type status, const QString &file, int line)
 
virtual void StartNewFile (void)
 
void SetPositionMapType (MarkTypes type)
 Set seektable type. More...
 
void AspectChange (uint aspect, long long frame)
 Note a change in aspect ratio in the recordedmark table. More...
 
void ResolutionChange (uint width, uint height, long long frame)
 Note a change in video size in the recordedmark table. More...
 
void FrameRateChange (uint framerate, long long frame)
 Note a change in video frame rate in the recordedmark table. More...
 
void VideoCodecChange (AVCodecID vCodec)
 Note a change in video codec. More...
 
void AudioCodecChange (AVCodecID aCodec)
 Note a change in audio codec. More...
 
void SetDuration (uint64_t duration)
 Note the total duration in the recordedmark table. More...
 
void SetTotalFrames (uint64_t total_frames)
 Note the total frames in the recordedmark table. More...
 
void TryWriteProgStartMark (const frm_pos_map_t &durationDeltaCopy)
 
- Protected Member Functions inherited from MPEGStreamListener
virtual ~MPEGStreamListener ()=default
 
- Protected Member Functions inherited from MPEGSingleProgramStreamListener
virtual ~MPEGSingleProgramStreamListener ()=default
 
- Protected Member Functions inherited from DVBMainStreamListener
virtual ~DVBMainStreamListener ()=default
 
- Protected Member Functions inherited from ATSCMainStreamListener
virtual ~ATSCMainStreamListener ()=default
 
- Protected Member Functions inherited from TSPacketListener
virtual ~TSPacketListener ()=default
 
- Protected Member Functions inherited from TSPacketListenerAV
virtual ~TSPacketListenerAV ()=default
 
- Protected Member Functions inherited from PSStreamListener
virtual ~PSStreamListener ()=default
 

Protected Attributes

int m_streamFd {-1}
 
QString m_recordingType {"all"}
 
QElapsedTimer m_audioTimer
 
uint32_t m_startCode {0xffffffff}
 
int m_firstKeyframe {-1}
 
unsigned long long m_lastGopSeen {0}
 
unsigned long long m_lastSeqSeen {0}
 
unsigned long long m_lastKeyframeSeen {0}
 
unsigned int m_audioBytesRemaining {0}
 
unsigned int m_videoBytesRemaining {0}
 
unsigned int m_otherBytesRemaining {0}
 
int m_progressiveSequence {0}
 
int m_repeatPict {0}
 
bool m_pesSynced {false}
 
bool m_seenSps {false}
 
H264Parser m_h264Parser
 
bool m_waitForKeyframeOption {true}
 Wait for the a GOP/SEQ-start before sending data. More...
 
bool m_hasWrittenOtherKeyframe {false}
 
QString m_error
 non-empty iff irrecoverable recording error detected More...
 
MPEGStreamDatam_streamData {nullptr}
 
bool m_bufferPackets {false}
 
vector< unsigned char > m_payloadBuffer
 
QMutex m_pidLock {QMutex::Recursive}
 
ProgramAssociationTablem_inputPat {nullptr}
 PAT on input side. More...
 
ProgramMapTablem_inputPmt {nullptr}
 PMT on input side. More...
 
bool m_hasNoAV {false}
 
bool m_recordMpts {false}
 
bool m_recordMptsOnly {false}
 
unsigned char m_streamId [0x1fff+1] {0}
 
unsigned char m_pidStatus [0x1fff+1] {0}
 
unsigned char m_continuityCounter [0x1fff+1] {0}
 
vector< TSPacketm_scratch
 
int m_minimumRecordingQuality {95}
 
bool m_use_pts {false}
 
uint64_t m_tsCount [256] {0}
 
int64_t m_tsLast [256] {}
 
int64_t m_tsFirst [256] {}
 
QDateTime m_tsFirstDt [256]
 
QAtomicInt m_packetCount {0}
 
QAtomicInt m_continuityErrorCount {0}
 
unsigned long long m_framesSeenCount {0}
 
unsigned long long m_framesWrittenCount {0}
 
double m_totalDuration {0.0}
 
double m_tdBase {0.0}
 
uint64_t m_tdTickCount {0}
 
FrameRate m_tdTickFramerate {0}
 
bool m_musicChoice {false}
 
- Protected Attributes inherited from RecorderBase
TVRecm_tvrec {nullptr}
 
RingBufferm_ringBuffer {nullptr}
 
bool m_weMadeBuffer {true}
 
AVContainer m_containerFormat {formatUnknown}
 
AVCodecID m_primaryVideoCodec {AV_CODEC_ID_NONE}
 
AVCodecID m_primaryAudioCodec {AV_CODEC_ID_NONE}
 
QString m_videocodec {"rtjpeg"}
 
QString m_videodevice
 
bool m_ntsc {true}
 
bool m_ntscFrameRate {true}
 
double m_videoFrameRate {29.97}
 
uint m_videoAspect {0}
 
uint m_videoHeight {0}
 
uint m_videoWidth {0}
 
FrameRate m_frameRate {0}
 
RecordingInfom_curRecording {nullptr}
 
QMutex m_pauseLock
 
bool m_requestPause {false}
 
bool m_paused {false}
 
QWaitCondition m_pauseWait
 
QWaitCondition m_unpauseWait
 
bool m_requestRecording {false}
 True if API call has requested a recording be [re]started. More...
 
bool m_recording {false}
 True while recording is actually being performed. More...
 
QWaitCondition m_recordingWait
 
QMutex m_nextRingBufferLock
 
RingBufferm_nextRingBuffer {nullptr}
 
RecordingInfom_nextRecording {nullptr}
 
MythTimer m_ringBufferCheckTimer
 
MarkTypes m_positionMapType {MARK_GOP_BYFRAME}
 
QMutex m_positionMapLock
 
frm_pos_map_t m_positionMap
 
frm_pos_map_t m_positionMapDelta
 
frm_pos_map_t m_durationMap
 
frm_pos_map_t m_durationMapDelta
 
MythTimer m_positionMapTimer
 
qint64 m_estimatedProgStartMS {0}
 
long long m_lastSavedKeyframe {0}
 
long long m_lastSavedDuration {0}
 
QMutex m_statisticsLock
 
QAtomicInt m_timeOfFirstDataIsSet
 
QDateTime m_timeOfFirstData
 
QAtomicInt m_timeOfLatestDataCount
 
QAtomicInt m_timeOfLatestDataPacketInterval
 
QDateTime m_timeOfLatestData
 
MythTimer m_timeOfLatestDataTimer
 
RecordingGaps m_recordingGaps
 

Static Protected Attributes

static const uint kMaxKeyFrameDistance = 80
 If the number of regular frames detected since the last detected keyframe exceeds this value, then we begin marking random regular frames as keyframes. More...
 
static const unsigned char kPayloadStartSeen = 0x2
 
- Static Protected Attributes inherited from RecorderBase
static const uint kTimeOfLatestDataIntervalTarget = 5000
 timeOfLatest update interval target in milliseconds. More...
 

Additional Inherited Members

- Public Types inherited from RecorderBase
enum  AspectRatio {
  ASPECT_UNKNOWN = 0x00, ASPECT_1_1 = 0x01, ASPECT_4_3 = 0x02, ASPECT_16_9 = 0x03,
  ASPECT_2_21_1 = 0x04, ASPECT_CUSTOM = 0x05
}
 
- Static Public Member Functions inherited from RecorderBase
static RecorderBaseCreateRecorder (TVRec *tvrec, ChannelBase *channel, RecordingProfile &profile, const GeneralDBOptions &genOpt)
 

Detailed Description

This is a specialization of RecorderBase used to handle MPEG-2, MPEG-4, MPEG-4 AVC, DVB and ATSC streams.

See also
DBox2Recorder, DVBRecorder, FirewireRecorder, HDHRRecoreder, IPTVRecorder

Definition at line 27 of file dtvrecorder.h.

Constructor & Destructor Documentation

◆ DTVRecorder()

DTVRecorder::DTVRecorder ( TVRec rec)
explicit

Definition at line 46 of file dtvrecorder.cpp.

◆ ~DTVRecorder()

DTVRecorder::~DTVRecorder ( void  )
override

Definition at line 60 of file dtvrecorder.cpp.

Member Function Documentation

◆ SetOption() [1/2]

void DTVRecorder::SetOption ( const QString &  name,
const QString &  value 
)
overridevirtual

Set an specific option.

Base options include: codec, videodevice, tvformat (ntsc,ntsc-jp,pal-m), vbiformat ("none","pal teletext","ntsc").

Reimplemented from RecorderBase.

Reimplemented in NuppelVideoRecorder, V4LRecorder, and MpegRecorder.

Definition at line 79 of file dtvrecorder.cpp.

Referenced by V4LRecorder::SetOption(), ImportRecorder::SetOptionsFromProfile(), SetOptionsFromProfile(), and ASIRecorder::SetOptionsFromProfile().

◆ SetOption() [2/2]

void DTVRecorder::SetOption ( const QString &  name,
int  value 
)
overridevirtual

handles the "wait_for_seqstart" option.

Reimplemented from RecorderBase.

Reimplemented in NuppelVideoRecorder, V4LRecorder, and MpegRecorder.

Definition at line 90 of file dtvrecorder.cpp.

◆ SetOptionsFromProfile()

void DTVRecorder::SetOptionsFromProfile ( RecordingProfile profile,
const QString &  videodev,
const QString &  audiodev,
const QString &  vbidev 
)
overridevirtual

Sets basic recorder options.

SetOptionsFromProfile is used to tell the recorder about the recording profile as well as the devices to use.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, FirewireRecorder, V4L2encRecorder, ImportRecorder, and MpegRecorder.

Definition at line 100 of file dtvrecorder.cpp.

◆ IsErrored()

bool DTVRecorder::IsErrored ( void  )
inlineoverridevirtual

◆ GetFramesWritten()

long long DTVRecorder::GetFramesWritten ( void  )
inlineoverridevirtual

Returns number of frames written to disk.

It is not always safe to seek up to this frame in a player because frames may not be written in display order.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, and ImportRecorder.

Definition at line 50 of file dtvrecorder.h.

◆ SetVideoFilters()

void DTVRecorder::SetVideoFilters ( QString &  filters)
inlineoverridevirtual

Tells recorder which filters to use.

These filters are used by frame grabber encoders to lower the bitrate while keeping quality good. They must execute quickly so that frames are not lost by the recorder.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, and MpegRecorder.

Definition at line 53 of file dtvrecorder.h.

◆ Initialize()

void DTVRecorder::Initialize ( void  )
inlineoverridevirtual

This is called between SetOptionsFromProfile() and run() to initialize any devices, etc.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, and MpegRecorder.

Definition at line 54 of file dtvrecorder.h.

◆ GetVideoFd()

int DTVRecorder::GetVideoFd ( void  )
inlineoverridevirtual

Returns file descriptor of recorder device.

This is used by channel when only one open file descriptor is allowed on a device node. This is the case with video4linux devices and similar devices in BSD. It is not needed by newer drivers, such as those used for DVB.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, and MpegRecorder.

Definition at line 55 of file dtvrecorder.h.

◆ SetStreamData()

void DTVRecorder::SetStreamData ( MPEGStreamData data)
virtual

◆ GetStreamData()

MPEGStreamData* DTVRecorder::GetStreamData ( void  ) const
inline

◆ Reset()

void DTVRecorder::Reset ( void  )
overridevirtual

Reset the recorder to the startup state.

This is used after Pause(bool), WaitForPause() and after the RingBuffer's StopReads() method has been called.

Implements RecorderBase.

Reimplemented in NuppelVideoRecorder, and MpegRecorder.

Definition at line 188 of file dtvrecorder.cpp.

◆ ClearStatistics()

void DTVRecorder::ClearStatistics ( void  )
overridevirtual

Reimplemented from RecorderBase.

Definition at line 167 of file dtvrecorder.cpp.

Referenced by ResetForNewFile(), and NuppelVideoRecorder::ResetForNewFile().

◆ GetRecordingQuality()

RecordingQuality * DTVRecorder::GetRecordingQuality ( const RecordingInfo ri) const
overridevirtual

Returns a report about the current recordings quality.

Reimplemented from RecorderBase.

Reimplemented in ImportRecorder.

Definition at line 1576 of file dtvrecorder.cpp.

◆ HandlePAT()

void DTVRecorder::HandlePAT ( const ProgramAssociationTable _pat)
overridevirtual

Implements MPEGStreamListener.

Definition at line 1218 of file dtvrecorder.cpp.

◆ HandleCAT()

void DTVRecorder::HandleCAT ( const ConditionalAccessTable )
inlineoverridevirtual

Implements MPEGStreamListener.

Definition at line 67 of file dtvrecorder.h.

◆ HandlePMT()

void DTVRecorder::HandlePMT ( uint  progNum,
const ProgramMapTable _pmt 
)
overridevirtual

Implements MPEGStreamListener.

Definition at line 1255 of file dtvrecorder.cpp.

◆ HandleEncryptionStatus()

void DTVRecorder::HandleEncryptionStatus ( uint  ,
bool   
)
inlineoverridevirtual

Implements MPEGStreamListener.

Definition at line 69 of file dtvrecorder.h.

◆ HandleSingleProgramPAT()

void DTVRecorder::HandleSingleProgramPAT ( ProgramAssociationTable pat,
bool  insert 
)
overridevirtual

◆ HandleSingleProgramPMT()

void DTVRecorder::HandleSingleProgramPMT ( ProgramMapTable pmt,
bool  insert 
)
overridevirtual

◆ HandleSTT()

void DTVRecorder::HandleSTT ( const SystemTimeTable )
inlineoverridevirtual

Implements ATSCMainStreamListener.

Definition at line 76 of file dtvrecorder.h.

◆ HandleVCT()

void DTVRecorder::HandleVCT ( uint  ,
const VirtualChannelTable  
)
inlineoverridevirtual

Implements ATSCMainStreamListener.

Definition at line 77 of file dtvrecorder.h.

◆ HandleMGT()

void DTVRecorder::HandleMGT ( const MasterGuideTable )
inlineoverridevirtual

Implements ATSCMainStreamListener.

Definition at line 78 of file dtvrecorder.h.

◆ HandleTDT()

void DTVRecorder::HandleTDT ( const TimeDateTable )
inlineoverridevirtual

Implements DVBMainStreamListener.

Definition at line 81 of file dtvrecorder.h.

◆ HandleNIT()

void DTVRecorder::HandleNIT ( const NetworkInformationTable )
inlineoverridevirtual

Implements DVBMainStreamListener.

Definition at line 82 of file dtvrecorder.h.

◆ HandleSDT()

void DTVRecorder::HandleSDT ( uint  ,
const ServiceDescriptionTable  
)
inlineoverridevirtual

Implements DVBMainStreamListener.

Definition at line 83 of file dtvrecorder.h.

◆ ProcessTSPacket()

bool DTVRecorder::ProcessTSPacket ( const TSPacket tspacket)
overridevirtual

Implements TSPacketListener.

Reimplemented in FirewireRecorder, and MpegRecorder.

Definition at line 1416 of file dtvrecorder.cpp.

Referenced by MpegRecorder::ProcessTSPacket().

◆ ProcessVideoTSPacket()

bool DTVRecorder::ProcessVideoTSPacket ( const TSPacket tspacket)
overridevirtual

Implements TSPacketListenerAV.

Definition at line 1480 of file dtvrecorder.cpp.

Referenced by FirewireRecorder::ProcessTSPacket().

◆ ProcessAudioTSPacket()

bool DTVRecorder::ProcessAudioTSPacket ( const TSPacket tspacket)
overridevirtual

Implements TSPacketListenerAV.

Definition at line 1513 of file dtvrecorder.cpp.

Referenced by FirewireRecorder::ProcessTSPacket().

◆ ProcessAVTSPacket()

bool DTVRecorder::ProcessAVTSPacket ( const TSPacket tspacket)

Common code for processing either audio or video packets.

Definition at line 1537 of file dtvrecorder.cpp.

Referenced by ProcessAudioTSPacket(), and ProcessVideoTSPacket().

◆ InitStreamData()

void DTVRecorder::InitStreamData ( void  )
protectedvirtual

Reimplemented in FirewireRecorder, MpegRecorder, and ImportRecorder.

Definition at line 215 of file dtvrecorder.cpp.

Referenced by SetStreamData().

◆ FinishRecording()

void DTVRecorder::FinishRecording ( void  )
overrideprotectedvirtual

Flushes the ringbuffer, and if this is not a live LiveTV recording saves the position map and filesize.

Reimplemented from RecorderBase.

Reimplemented in NuppelVideoRecorder.

Definition at line 114 of file dtvrecorder.cpp.

Referenced by NuppelVideoRecorder::FinishRecording(), HDHRRecorder::run(), CetonRecorder::run(), DVBRecorder::run(), IPTVRecorder::run(), ExternalRecorder::run(), V4L2encRecorder::run(), ImportRecorder::run(), FirewireRecorder::run(), and ASIRecorder::run().

◆ ResetForNewFile()

void DTVRecorder::ResetForNewFile ( void  )
overrideprotectedvirtual

◆ HandleKeyframe()

void DTVRecorder::HandleKeyframe ( int64_t  extra)
protected

This save the current frame to the position maps and handles ringbuffer switching.

Definition at line 766 of file dtvrecorder.cpp.

Referenced by FindAudioKeyframes(), FindMPEG2Keyframes(), FindOtherKeyframes(), FindPSKeyFrames(), and ProcessTSPacket().

◆ HandleTimestamps()

void DTVRecorder::HandleTimestamps ( int  stream_id,
int64_t  pts,
int64_t  dts 
)
protected

Definition at line 584 of file dtvrecorder.cpp.

Referenced by FindMPEG2Keyframes().

◆ UpdateFramesWritten()

void DTVRecorder::UpdateFramesWritten ( void  )
protected

◆ BufferedWrite()

void DTVRecorder::BufferedWrite ( const TSPacket tspacket,
bool  insert = false 
)
protected

◆ FindAudioKeyframes()

bool DTVRecorder::FindAudioKeyframes ( const TSPacket tspacket)
protected

Definition at line 700 of file dtvrecorder.cpp.

Referenced by ProcessAudioTSPacket().

◆ FindMPEG2Keyframes()

bool DTVRecorder::FindMPEG2Keyframes ( const TSPacket tspacket)
protected

Locates the keyframes and saves them to the position map.

This searches for three magic integers in the stream. The picture start code 0x00000100, the GOP code 0x000001B8, and the sequence start code 0x000001B3. The GOP code is prefered, but is only required of MPEG1 streams, the sequence start code is a decent fallback for MPEG2 streams, and if all else fails we just look for the picture start codes and call every 16th frame a keyframe.

NOTE: This does not only find keyframes but also tracks the total frames as well. At least a couple times seeking has been broken by short-circuiting the search once a keyframe stream id has been found. This may work on some channels, but will break on others so algorithmic optimizations should be done with great care.

PES header format
byte 0 byte 1 byte 2 byte 3 [byte 4 byte 5]
0x00 0x00 0x01 PESStreamID PES packet length
Returns
Returns true if packet[s] should be output.

Definition at line 383 of file dtvrecorder.cpp.

Referenced by ProcessVideoTSPacket().

◆ FindH264Keyframes()

bool DTVRecorder::FindH264Keyframes ( const TSPacket tspacket)
protected

This searches the TS packet to identify keyframes.

Parameters
tspacketPointer the the TS packet data.
Returns
Returns true if a keyframe has been found.

Definition at line 806 of file dtvrecorder.cpp.

Referenced by ProcessVideoTSPacket().

◆ HandleH264Keyframe()

void DTVRecorder::HandleH264Keyframe ( void  )
protected

This save the current frame to the position maps and handles ringbuffer switching.

Definition at line 1002 of file dtvrecorder.cpp.

Referenced by FindH264Keyframes().

◆ FindPSKeyFrames()

void DTVRecorder::FindPSKeyFrames ( const uint8_t *  buffer,
uint  len 
)
overrideprotectedvirtual

Implements PSStreamListener.

Definition at line 1031 of file dtvrecorder.cpp.

◆ FindOtherKeyframes()

bool DTVRecorder::FindOtherKeyframes ( const TSPacket tspacket)
protected

Non-Audio/Video data.

For streams which contain no audio/video, write just 1 key-frame at the start.

Definition at line 740 of file dtvrecorder.cpp.

Referenced by ProcessTSPacket().

◆ CheckCC()

bool DTVRecorder::CheckCC ( uint  pid,
uint  new_cnt 
)
inlineprotected

Definition at line 215 of file dtvrecorder.h.

Referenced by ProcessAVTSPacket(), and ProcessTSPacket().

◆ GetSIStandard()

virtual QString DTVRecorder::GetSIStandard ( void  ) const
inlineprotectedvirtual

Reimplemented in DVBRecorder, CetonRecorder, and HDHRRecorder.

Definition at line 125 of file dtvrecorder.h.

Referenced by HandlePMT().

◆ SetCAMPMT()

virtual void DTVRecorder::SetCAMPMT ( const ProgramMapTable )
inlineprotectedvirtual

Reimplemented in DVBRecorder.

Definition at line 126 of file dtvrecorder.h.

Referenced by HandlePMT().

◆ UpdateCAMTimeOffset()

virtual void DTVRecorder::UpdateCAMTimeOffset ( void  )
inlineprotectedvirtual

Reimplemented in DVBRecorder.

Definition at line 127 of file dtvrecorder.h.

Member Data Documentation

◆ m_streamFd

int DTVRecorder::m_streamFd {-1}
protected

Definition at line 130 of file dtvrecorder.h.

◆ m_recordingType

QString DTVRecorder::m_recordingType {"all"}
protected

Definition at line 132 of file dtvrecorder.h.

Referenced by SetOption().

◆ m_audioTimer

QElapsedTimer DTVRecorder::m_audioTimer
protected

Definition at line 135 of file dtvrecorder.h.

Referenced by FindAudioKeyframes().

◆ m_startCode

uint32_t DTVRecorder::m_startCode {0xffffffff}
protected

◆ m_firstKeyframe

int DTVRecorder::m_firstKeyframe {-1}
protected

◆ m_lastGopSeen

unsigned long long DTVRecorder::m_lastGopSeen {0}
protected

Definition at line 138 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), FindPSKeyFrames(), and ResetForNewFile().

◆ m_lastSeqSeen

unsigned long long DTVRecorder::m_lastSeqSeen {0}
protected

Definition at line 139 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), FindPSKeyFrames(), and ResetForNewFile().

◆ m_lastKeyframeSeen

unsigned long long DTVRecorder::m_lastKeyframeSeen {0}
protected

◆ m_audioBytesRemaining

unsigned int DTVRecorder::m_audioBytesRemaining {0}
protected

Definition at line 141 of file dtvrecorder.h.

Referenced by FindPSKeyFrames(), and ResetForNewFile().

◆ m_videoBytesRemaining

unsigned int DTVRecorder::m_videoBytesRemaining {0}
protected

Definition at line 142 of file dtvrecorder.h.

Referenced by FindPSKeyFrames(), and ResetForNewFile().

◆ m_otherBytesRemaining

unsigned int DTVRecorder::m_otherBytesRemaining {0}
protected

Definition at line 143 of file dtvrecorder.h.

Referenced by FindPSKeyFrames(), and ResetForNewFile().

◆ m_progressiveSequence

int DTVRecorder::m_progressiveSequence {0}
protected

Definition at line 146 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), and ResetForNewFile().

◆ m_repeatPict

int DTVRecorder::m_repeatPict {0}
protected

Definition at line 147 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), ResetForNewFile(), and UpdateFramesWritten().

◆ m_pesSynced

bool DTVRecorder::m_pesSynced {false}
protected

Definition at line 150 of file dtvrecorder.h.

Referenced by FindH264Keyframes().

◆ m_seenSps

bool DTVRecorder::m_seenSps {false}
protected

◆ m_h264Parser

H264Parser DTVRecorder::m_h264Parser
protected

◆ m_waitForKeyframeOption

bool DTVRecorder::m_waitForKeyframeOption {true}
protected

◆ m_hasWrittenOtherKeyframe

bool DTVRecorder::m_hasWrittenOtherKeyframe {false}
protected

Definition at line 157 of file dtvrecorder.h.

Referenced by FindOtherKeyframes(), and ResetForNewFile().

◆ m_error

QString DTVRecorder::m_error
protected

◆ m_streamData

MPEGStreamData* DTVRecorder::m_streamData {nullptr}
protected

◆ m_bufferPackets

bool DTVRecorder::m_bufferPackets {false}
protected

◆ m_payloadBuffer

vector<unsigned char> DTVRecorder::m_payloadBuffer
protected

◆ m_pidLock

QMutex DTVRecorder::m_pidLock {QMutex::Recursive}
mutableprotected

Definition at line 170 of file dtvrecorder.h.

Referenced by HandlePAT(), and HandlePMT().

◆ m_inputPat

ProgramAssociationTable* DTVRecorder::m_inputPat {nullptr}
protected

PAT on input side.

Definition at line 172 of file dtvrecorder.h.

Referenced by HandlePAT(), and ~DTVRecorder().

◆ m_inputPmt

ProgramMapTable* DTVRecorder::m_inputPmt {nullptr}
protected

◆ m_hasNoAV

bool DTVRecorder::m_hasNoAV {false}
protected

Definition at line 175 of file dtvrecorder.h.

Referenced by HandlePMT(), and ProcessTSPacket().

◆ m_recordMpts

bool DTVRecorder::m_recordMpts {false}
protected

◆ m_recordMptsOnly

bool DTVRecorder::m_recordMptsOnly {false}
protected

◆ m_streamId

unsigned char DTVRecorder::m_streamId[0x1fff+1] {0}
protected

Definition at line 180 of file dtvrecorder.h.

Referenced by HandleSingleProgramPMT(), ProcessTSPacket(), and ProcessVideoTSPacket().

◆ m_pidStatus

unsigned char DTVRecorder::m_pidStatus[0x1fff+1] {0}
protected

Definition at line 181 of file dtvrecorder.h.

Referenced by ProcessAVTSPacket().

◆ m_continuityCounter

unsigned char DTVRecorder::m_continuityCounter[0x1fff+1] {0}
protected

Definition at line 182 of file dtvrecorder.h.

Referenced by ProcessAVTSPacket(), and ProcessTSPacket().

◆ m_scratch

vector<TSPacket> DTVRecorder::m_scratch
protected

Definition at line 183 of file dtvrecorder.h.

Referenced by HandleSingleProgramPAT(), and HandleSingleProgramPMT().

◆ m_minimumRecordingQuality

int DTVRecorder::m_minimumRecordingQuality {95}
protected

Definition at line 186 of file dtvrecorder.h.

Referenced by DTVRecorder().

◆ m_use_pts

bool DTVRecorder::m_use_pts {false}
protected

Definition at line 187 of file dtvrecorder.h.

Referenced by HandleTimestamps().

◆ m_tsCount

uint64_t DTVRecorder::m_tsCount[256] {0}
protected

Definition at line 188 of file dtvrecorder.h.

Referenced by ClearStatistics(), and HandleTimestamps().

◆ m_tsLast

int64_t DTVRecorder::m_tsLast[256] {}
protected

Definition at line 189 of file dtvrecorder.h.

Referenced by ClearStatistics(), FindMPEG2Keyframes(), and HandleTimestamps().

◆ m_tsFirst

int64_t DTVRecorder::m_tsFirst[256] {}
protected

Definition at line 190 of file dtvrecorder.h.

Referenced by ClearStatistics(), FindMPEG2Keyframes(), and HandleTimestamps().

◆ m_tsFirstDt

QDateTime DTVRecorder::m_tsFirstDt[256]
protected

Definition at line 191 of file dtvrecorder.h.

Referenced by HandleTimestamps().

◆ m_packetCount

QAtomicInt DTVRecorder::m_packetCount {0}
mutableprotected

◆ m_continuityErrorCount

QAtomicInt DTVRecorder::m_continuityErrorCount {0}
mutableprotected

◆ m_framesSeenCount

unsigned long long DTVRecorder::m_framesSeenCount {0}
protected

◆ m_framesWrittenCount

unsigned long long DTVRecorder::m_framesWrittenCount {0}
protected

◆ m_totalDuration

double DTVRecorder::m_totalDuration {0.0}
protected

◆ m_tdBase

double DTVRecorder::m_tdBase {0.0}
protected

Definition at line 199 of file dtvrecorder.h.

Referenced by ClearStatistics(), and UpdateFramesWritten().

◆ m_tdTickCount

uint64_t DTVRecorder::m_tdTickCount {0}
protected

Definition at line 200 of file dtvrecorder.h.

Referenced by ClearStatistics(), and UpdateFramesWritten().

◆ m_tdTickFramerate

FrameRate DTVRecorder::m_tdTickFramerate {0}
protected

Definition at line 201 of file dtvrecorder.h.

Referenced by ClearStatistics(), and UpdateFramesWritten().

◆ m_musicChoice

bool DTVRecorder::m_musicChoice {false}
protected

Definition at line 205 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), and HandleTimestamps().

◆ kMaxKeyFrameDistance

const uint DTVRecorder::kMaxKeyFrameDistance = 80
staticprotected

If the number of regular frames detected since the last detected keyframe exceeds this value, then we begin marking random regular frames as keyframes.

Definition at line 211 of file dtvrecorder.h.

Referenced by FindMPEG2Keyframes(), and FindPSKeyFrames().

◆ kPayloadStartSeen

const unsigned char DTVRecorder::kPayloadStartSeen = 0x2
staticprotected

Definition at line 212 of file dtvrecorder.h.

Referenced by ProcessAVTSPacket().


The documentation for this class was generated from the following files: