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HEVCParser Class Reference

#include <libmythtv/mpeg/HEVCParser.h>

Inheritance diagram for HEVCParser:
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Collaboration diagram for HEVCParser:
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Classes

struct  PPS
 
struct  ScalingList
 
struct  ShortTermRefPicSet
 
struct  SPS
 
struct  VPS
 

Public Types

enum  NAL_unit_type : std::uint8_t {
  TAIL_N = 0 , TAIL_R = 1 , TSA_N = 2 , TSA_R = 3 ,
  STSA_N = 4 , STSA_R = 5 , RADL_N = 6 , RADL_R = 7 ,
  RASL_N = 8 , RASL_R = 9 , RSV_VCL_N10 = 10 , RSV_VCL_N12 = 12 ,
  RSV_VCL_N14 = 14 , RSV_VCL_R11 = 11 , RSV_VCL_R13 = 13 , RSV_VCL_R15 = 15 ,
  BLA_W_LP = 16 , BLA_W_RADL = 17 , BLA_N_LP = 18 , IDR_W_RADL = 19 ,
  IDR_N_LP = 20 , CRA_NUT = 21 , RSV_IRAP_VCL22 = 22 , RSV_IRAP_VCL23 = 23 ,
  RSV_VCL24 = 24 , RSV_VCL25 = 25 , RSV_VCL26 = 26 , RSV_VCL27 = 27 ,
  RSV_VCL28 = 28 , RSV_VCL29 = 29 , RSV_VCL30 = 30 , RSV_VCL31 = 31 ,
  VPS_NUT = 32 , SPS_NUT = 33 , PPS_NUT = 34 , AUD_NUT = 35 ,
  EOS_NUT = 36 , EOB_NUT = 37 , FD_NUT = 38 , PREFIX_SEI_NUT = 39 ,
  SUFFIX_SEI_NUT = 40 , RSV_NVCL41 = 41 , RSV_NVCL42 = 42 , RSV_NVCL43 = 43 ,
  RSV_NVCL44 = 44 , RSV_NVCL45 = 45 , RSV_NVCL46 = 46 , RSV_NVCL47 = 47 ,
  UNSPEC48 = 48 , UNSPEC49 = 49 , UNSPEC50 = 50 , UNSPEC51 = 51 ,
  UNSPEC52 = 52 , UNSPEC53 = 53 , UNSPEC54 = 54 , UNSPEC55 = 55 ,
  UNSPEC56 = 56 , UNSPEC57 = 57 , UNSPEC58 = 58 , UNSPEC59 = 59 ,
  UNSPEC60 = 60 , UNSPEC61 = 61 , UNSPEC62 = 62 , UNSPEC63 = 63
}
 
enum  QuantMatrixSize : std::uint8_t { QUANT_MATIX_4X4 = 0 , QUANT_MATIX_8X8 = 1 , QUANT_MATIX_16X16 = 2 , QUANT_MATIX_32X32 = 3 }
 
- Public Types inherited from H2645Parser
enum  field_type : std::uint8_t { FRAME = 'F' , FIELD_TOP = 'T' , FIELD_BOTTOM = 'B' }
 
enum  NAL_unit_type : std::int8_t { UNKNOWN = -1 }
 
enum  SLICE_type : std::uint8_t {
  SLICE_P = 0 , SLICE_B = 1 , SLICE_I = 2 , SLICE_SP = 3 ,
  SLICE_SI = 4 , SLICE_P_a = 5 , SLICE_B_a = 6 , SLICE_I_a = 7 ,
  SLICE_SP_a = 8 , SLICE_SI_a = 9 , SLICE_UNDEF = 10
}
 

Public Member Functions

 HEVCParser (void)
 
 HEVCParser (const HEVCParser &rhs)
 
 ~HEVCParser (void) override
 
uint32_t addBytes (const uint8_t *bytes, uint32_t byte_count, uint64_t stream_offset) override
 
void Reset (void) override
 
QString NAL_type_str (int8_t type) override
 
uint pictureWidthCropped (void) const override
 
uint pictureHeightCropped (void) const override
 
field_type getFieldType (void) const override
 
MythAVRational getFrameRate () const override
 
- Public Member Functions inherited from H2645Parser
 H2645Parser (void)
 
 H2645Parser (const H2645Parser &rhs)
 
virtual ~H2645Parser (void)
 
virtual uint32_t addBytes (const uint8_t *bytes, uint32_t byte_count, uint64_t stream_offset)=0
 
virtual void Reset (void)
 
virtual QString NAL_type_str (int8_t type)=0
 
bool stateChanged (void) const
 
bool onFrameStart (void) const
 
bool onKeyFrameStart (void) const
 
uint pictureWidth (void) const
 
uint pictureHeight (void) const
 
virtual uint pictureWidthCropped (void) const =0
 
virtual uint pictureHeightCropped (void) const =0
 
uint aspectRatio (void) const
 Computes aspect ratio from picture size and sample aspect ratio. More...
 
virtual MythAVRational getFrameRate () const =0
 
virtual field_type getFieldType (void) const =0
 
uint64_t frameAUstreamOffset (void) const
 
uint64_t keyframeAUstreamOffset (void) const
 
uint64_t SPSstreamOffset (void) const
 
uint32_t GetTimeScale (void) const
 
uint32_t GetUnitsInTick (void) const
 
SCAN_t GetScanType (void) const
 

Static Public Member Functions

static bool NALisRAP (uint type)
 
static bool NALisIRAP (uint type)
 
static bool NALisVCL (uint type)
 

Protected Member Functions

bool newAU (void)
 
void processRBSP (bool rbsp_complete)
 
bool profileTierLevel (BitReader &br, bool profilePresentFlag, int maxNumSubLayersMinus1)
 
bool parseSliceSegmentLayer (BitReader &br)
 
bool parseSliceSegmentHeader (BitReader &br)
 
bool parseSPS (BitReader &br)
 
bool parseVPS (BitReader &br)
 
bool parsePPS (BitReader &br)
 
- Protected Member Functions inherited from H2645Parser
void resetRBSP (void)
 
bool fillRBSP (const uint8_t *byteP, uint32_t byte_count, bool found_start_code)
 
void vui_parameters (BitReader &br, bool hevc)
 

Private Attributes

uint32_t m_maxPicOrderCntLsb {0}
 
uint32_t m_picOrderCntMsb {0}
 
uint32_t m_picOrderCntVal {0}
 
uint32_t m_prevPicOrderCntLsb {0}
 
uint32_t m_prevPicOrderCntMsb {0}
 
uint32_t m_resolutionCheck {0}
 
uint m_nalUnitType {UNSPEC63}
 
uint8_t m_nalTemperalId {0}
 
uint8_t m_nuhLayerId {0}
 
bool m_firstSliceSegmentInPicFlag {false}
 
bool m_nextNALisAU {false}
 
bool m_noRaslOutputFlag {false}
 
bool m_seenEOS {true}
 
std::map< uint, SPS > m_sps
 
std::map< uint, PPS > m_pps
 
std::map< uint, VPS > m_vps
 
std::map< uint, uint > m_poc
 

Additional Inherited Members

- Static Public Attributes inherited from H2645Parser
static constexpr uint16_t kMaxSliceHeaderSize { 256 }
 
- Protected Attributes inherited from H2645Parser
uint64_t m_framecnt {0}
 
uint64_t m_keyframecnt {0}
 
uint64_t m_totalframecnt {0}
 
uint64_t m_totalkeyframecnt {0}
 
uint64_t m_auOffset {0}
 
uint64_t m_frameStartOffset {0}
 
uint64_t m_keyframeStartOffset {0}
 
uint64_t m_pktOffset {0}
 
uint64_t m_spsOffset {0}
 
uint32_t m_consecutiveZeros {0}
 
uint32_t m_rbspBufferSize {188 * 2}
 
uint32_t m_rbspIndex {0}
 
uint32_t m_syncAccumulator {0xffffffff}
 
uint32_t m_timeScale {0}
 
uint32_t m_unitsInTick {0}
 
SCAN_t m_scanType {SCAN_t::UNKNOWN_SCAN}
 
uint m_frameCropBottomOffset {0}
 
uint m_frameCropLeftOffset {0}
 
uint m_frameCropRightOffset {0}
 
uint m_frameCropTopOffset {0}
 
uint m_picHeight {0}
 
uint m_picWidth {0}
 
uint m_sarHeight {0}
 
uint m_sarWidth {0}
 
uint8_t * m_rbspBuffer {nullptr}
 
uint8_t m_aspectRatioIdc {0}
 
int8_t m_chromaFormatIdc {1}
 
bool m_auPending {false}
 
bool m_fixedRate {false}
 
bool m_haveUnfinishedNAL {false}
 
bool m_isKeyframe {false}
 
bool m_onAU {false}
 
bool m_onFrame {false}
 
bool m_onKeyFrame {false}
 
bool m_seenSPS {false}
 
bool m_separateColourPlaneFlag {false}
 
bool m_stateChanged {false}
 
- Static Protected Attributes inherited from H2645Parser
static constexpr uint8_t kExtendedSar { 255 }
 

Detailed Description

Definition at line 32 of file HEVCParser.h.

Member Enumeration Documentation

◆ NAL_unit_type

enum HEVCParser::NAL_unit_type : std::uint8_t
Enumerator
TAIL_N 
TAIL_R 
TSA_N 
TSA_R 
STSA_N 
STSA_R 
RADL_N 
RADL_R 
RASL_N 
RASL_R 
RSV_VCL_N10 
RSV_VCL_N12 
RSV_VCL_N14 
RSV_VCL_R11 
RSV_VCL_R13 
RSV_VCL_R15 
BLA_W_LP 
BLA_W_RADL 
BLA_N_LP 
IDR_W_RADL 
IDR_N_LP 
CRA_NUT 
RSV_IRAP_VCL22 
RSV_IRAP_VCL23 
RSV_VCL24 
RSV_VCL25 
RSV_VCL26 
RSV_VCL27 
RSV_VCL28 
RSV_VCL29 
RSV_VCL30 
RSV_VCL31 
VPS_NUT 
SPS_NUT 
PPS_NUT 
AUD_NUT 
EOS_NUT 
EOB_NUT 
FD_NUT 
PREFIX_SEI_NUT 
SUFFIX_SEI_NUT 
RSV_NVCL41 
RSV_NVCL42 
RSV_NVCL43 
RSV_NVCL44 
RSV_NVCL45 
RSV_NVCL46 
RSV_NVCL47 
UNSPEC48 
UNSPEC49 
UNSPEC50 
UNSPEC51 
UNSPEC52 
UNSPEC53 
UNSPEC54 
UNSPEC55 
UNSPEC56 
UNSPEC57 
UNSPEC58 
UNSPEC59 
UNSPEC60 
UNSPEC61 
UNSPEC62 
UNSPEC63 

Definition at line 36 of file HEVCParser.h.

◆ QuantMatrixSize

enum HEVCParser::QuantMatrixSize : std::uint8_t
Enumerator
QUANT_MATIX_4X4 
QUANT_MATIX_8X8 
QUANT_MATIX_16X16 
QUANT_MATIX_32X32 

Definition at line 206 of file HEVCParser.h.

Constructor & Destructor Documentation

◆ HEVCParser() [1/2]

HEVCParser::HEVCParser ( void  )
inline

Definition at line 215 of file HEVCParser.h.

◆ HEVCParser() [2/2]

HEVCParser::HEVCParser ( const HEVCParser &  rhs)

◆ ~HEVCParser()

HEVCParser::~HEVCParser ( void  )
inlineoverride

Definition at line 217 of file HEVCParser.h.

Member Function Documentation

◆ addBytes()

uint32_t HEVCParser::addBytes ( const uint8_t *  bytes,
uint32_t  byte_count,
uint64_t  stream_offset 
)
overridevirtual

Implements H2645Parser.

Definition at line 126 of file HEVCParser.cpp.

◆ getFieldType()

field_type HEVCParser::getFieldType ( void  ) const
inlineoverridevirtual

Implements H2645Parser.

Definition at line 255 of file HEVCParser.h.

◆ getFrameRate()

MythAVRational HEVCParser::getFrameRate ( ) const
overridevirtual

Implements H2645Parser.

Definition at line 2070 of file HEVCParser.cpp.

◆ NAL_type_str()

QString HEVCParser::NAL_type_str ( int8_t  type)
overridevirtual

Implements H2645Parser.

Definition at line 50 of file HEVCParser.cpp.

Referenced by addBytes().

◆ NALisIRAP()

static bool HEVCParser::NALisIRAP ( uint  type)
inlinestatic

Definition at line 234 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader(), and processRBSP().

◆ NALisRAP()

static bool HEVCParser::NALisRAP ( uint  type)
inlinestatic

Definition at line 224 of file HEVCParser.h.

◆ NALisVCL()

static bool HEVCParser::NALisVCL ( uint  type)
inlinestatic

Definition at line 239 of file HEVCParser.h.

Referenced by addBytes(), newAU(), and processRBSP().

◆ newAU()

bool HEVCParser::newAU ( void  )
protected

Definition at line 248 of file HEVCParser.cpp.

Referenced by processRBSP().

◆ parsePPS()

bool HEVCParser::parsePPS ( BitReader &  br)
protected

Definition at line 1965 of file HEVCParser.cpp.

◆ parseSliceSegmentHeader()

bool HEVCParser::parseSliceSegmentHeader ( BitReader &  br)
protected

Definition at line 1248 of file HEVCParser.cpp.

Referenced by parseSliceSegmentLayer().

◆ parseSliceSegmentLayer()

bool HEVCParser::parseSliceSegmentLayer ( BitReader &  br)
protected

Definition at line 1231 of file HEVCParser.cpp.

Referenced by processRBSP().

◆ parseSPS()

bool HEVCParser::parseSPS ( BitReader &  br)
protected

Definition at line 1575 of file HEVCParser.cpp.

Referenced by processRBSP().

◆ parseVPS()

bool HEVCParser::parseVPS ( BitReader &  br)
protected

Definition at line 1832 of file HEVCParser.cpp.

Referenced by processRBSP().

◆ pictureHeightCropped()

uint HEVCParser::pictureHeightCropped ( void  ) const
overridevirtual

Implements H2645Parser.

Definition at line 2060 of file HEVCParser.cpp.

◆ pictureWidthCropped()

uint HEVCParser::pictureWidthCropped ( void  ) const
overridevirtual

Implements H2645Parser.

Definition at line 2049 of file HEVCParser.cpp.

◆ processRBSP()

void HEVCParser::processRBSP ( bool  rbsp_complete)
protected

Definition at line 457 of file HEVCParser.cpp.

Referenced by addBytes().

◆ profileTierLevel()

bool HEVCParser::profileTierLevel ( BitReader &  br,
bool  profilePresentFlag,
int  maxNumSubLayersMinus1 
)
protected

Definition at line 576 of file HEVCParser.cpp.

Referenced by parseSPS(), and parseVPS().

◆ Reset()

void HEVCParser::Reset ( void  )
overridevirtual

Reimplemented from H2645Parser.

Definition at line 45 of file HEVCParser.cpp.

Member Data Documentation

◆ m_firstSliceSegmentInPicFlag

bool HEVCParser::m_firstSliceSegmentInPicFlag {false}
private

Definition at line 283 of file HEVCParser.h.

Referenced by newAU(), and parseSliceSegmentHeader().

◆ m_maxPicOrderCntLsb

uint32_t HEVCParser::m_maxPicOrderCntLsb {0}
private

Definition at line 271 of file HEVCParser.h.

◆ m_nalTemperalId

uint8_t HEVCParser::m_nalTemperalId {0}
private

Definition at line 280 of file HEVCParser.h.

Referenced by addBytes().

◆ m_nalUnitType

uint HEVCParser::m_nalUnitType {UNSPEC63}
private

Definition at line 278 of file HEVCParser.h.

Referenced by addBytes(), newAU(), parseSliceSegmentHeader(), and processRBSP().

◆ m_nextNALisAU

bool HEVCParser::m_nextNALisAU {false}
private

Definition at line 284 of file HEVCParser.h.

Referenced by newAU().

◆ m_noRaslOutputFlag

bool HEVCParser::m_noRaslOutputFlag {false}
private

Definition at line 285 of file HEVCParser.h.

Referenced by newAU(), and parseSliceSegmentHeader().

◆ m_nuhLayerId

uint8_t HEVCParser::m_nuhLayerId {0}
private

Definition at line 281 of file HEVCParser.h.

Referenced by addBytes(), newAU(), and parseSPS().

◆ m_picOrderCntMsb

uint32_t HEVCParser::m_picOrderCntMsb {0}
private

Definition at line 272 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader().

◆ m_picOrderCntVal

uint32_t HEVCParser::m_picOrderCntVal {0}
private

Definition at line 273 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader().

◆ m_poc

std::map<uint, uint> HEVCParser::m_poc
private

Definition at line 291 of file HEVCParser.h.

Referenced by parseSPS().

◆ m_pps

std::map<uint, PPS> HEVCParser::m_pps
private

Definition at line 289 of file HEVCParser.h.

Referenced by parsePPS(), and parseSliceSegmentHeader().

◆ m_prevPicOrderCntLsb

uint32_t HEVCParser::m_prevPicOrderCntLsb {0}
private

Definition at line 274 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader().

◆ m_prevPicOrderCntMsb

uint32_t HEVCParser::m_prevPicOrderCntMsb {0}
private

Definition at line 275 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader().

◆ m_resolutionCheck

uint32_t HEVCParser::m_resolutionCheck {0}
private

Definition at line 276 of file HEVCParser.h.

Referenced by parseSPS().

◆ m_seenEOS

bool HEVCParser::m_seenEOS {true}
private

Definition at line 286 of file HEVCParser.h.

Referenced by newAU().

◆ m_sps

std::map<uint, SPS> HEVCParser::m_sps
private

Definition at line 288 of file HEVCParser.h.

Referenced by parseSliceSegmentHeader(), and parseSPS().

◆ m_vps

std::map<uint, VPS> HEVCParser::m_vps
private

Definition at line 290 of file HEVCParser.h.

Referenced by parseSPS(), and parseVPS().

The documentation for this class was generated from the following files:
Generated on Tue Oct 28 2025 03:16:34 for MythTV by doxygen 1.9.4