Miscellaneous Helper Functions. More...

Classes
class	cBufferFillLevelLowPassFilter
	Fill Level Low Pass Filter. More...

class	cGrabBuffer
	Grabbing Buffer. More...

class	cSoftHdGrab
	Grabbing Processor. More...

class	cH264Parser
	H.264 Parser. More...

class	cJitterTracker
	Jitter Tracker. More...

class	cSoftHdLogger
	Logger. More...

struct	CodecInfo
	Codec Information Structure. More...

class	cPes
	PES Packet Parser. More...

class	cPesVideo
	Video PES Packet Parser. More...

class	cPesAudio
	Audio PES Packet Parser. More...

class	cPtsTrackingBuffer
	PTS Tracking Buffer. More...

class	cReassemblyBuffer
	Base Class for Stream Reassembly Buffers. More...

class	cReassemblyBufferVideo
	Video Stream Reassembly Buffer. More...

struct	SyncWordInfo
	Information about a detected audio sync word. More...

class	cReassemblyBufferAudio
	Audio Stream Reassembly Buffer. More...

Macros
#define	OPAQUE 0xff

#define	TRANSPARENT 0x00

#define	UNMULTIPLY(color, alpha) ((0xff * color) / alpha)

#define	BLEND(back, front, alpha) ((front * alpha) + (back * (255 - alpha))) / 255

#define	AV_LOGLEVEL AV_LOG_INFO
	FFmpeg log level.

#define	LOGFATAL cSoftHdLogger::GetLogger()->LogFatal
	log to LOG_ERR and abort

#define	LOGERROR cSoftHdLogger::GetLogger()->LogError
	log to LOG_ERR

#define	LOGWARNING cSoftHdLogger::GetLogger()->LogWarning
	log to LOG_WARN

#define	LOGINFO cSoftHdLogger::GetLogger()->LogInfo
	log to LOG_INFO

#define	LOGDEBUG cSoftHdLogger::GetLogger()->LogDebug
	log to LOG_DEBUG

#define	LOGDEBUG2 cSoftHdLogger::GetLogger()->LogDebug2
	log to LOG_DEBUG and add a prefix

#define	GL_CHECK(stmt)
	glCheckError macro

#define	EGL_CHECK(stmt)
	eglCheckError macro

#define	AV_NOPTS_VALUE INT64_C(0x8000000000000000)

#define	VIDEO_SURFACES_MAX 3
	maximum video surfaces kept by the filter and render queues

#define	av_err2str(err) av_err2string(err)

Enumerations
enum	Grabtype { GRABVIDEO , GRABPIP , GRABOSD }

enum	NalUnitTypes { NALU_TYPE_NON_IDR = (1 << 0) , NALU_TYPE_PART_A = (1 << 1) , NALU_TYPE_PART_B = (1 << 2) , NALU_TYPE_PART_C = (1 << 3) , NALU_TYPE_IDR = (1 << 4) , NALU_TYPE_SEI = (1 << 5) , NALU_TYPE_SPS = (1 << 6) , NALU_TYPE_PPS = (1 << 7) , NALU_TYPE_AUD = (1 << 8) }

enum	LogFlags { L_DEBUG = (1 << 0) , L_AV_SYNC = (1 << 1) , L_SOUND = (1 << 2) , L_OSD = (1 << 3) , L_DRM = (1 << 4) , L_CODEC = (1 << 5) , L_STILL = (1 << 6) , L_TRICK = (1 << 7) , L_MEDIA = (1 << 8) , L_OPENGL = (1 << 9) , L_OPENGL_TIME = (1 << 10) , L_OPENGL_TIME_ALL = (1 << 11) , L_PACKET = (1 << 12) , L_GRAB = (1 << 13) , L_FFMPEG = (1 << 14) }
	Logger Flags. More...

Functions
enum AVPixelFormat	DrmFormatToAVFormat (cDrmBuffer *buf)
	Convert a DRM format to a ffmpeg AV format.

static uint8_t *	BufToRgb (cDrmBuffer buf, int size, int dstW, int dstH, enum AVPixelFormat dstPixFmt)
	Convert a DRM buffer to rgb format image.

static uint8_t *	ScaleRgb24 (uint8_t src, int size, int srcW, int srcH, int dstW, int dstH)
	Scale an image.

static void	AlphaBlend (uint8_t result, uint8_t front, uint8_t *back, const unsigned int width, const unsigned int height)
	Blend two images.

static int	BlitVideo (uint8_t dst, uint8_t src, int dstW, int dstH, int dstX, int dstY, int srcW, int srcH)
	Blit the video on black background.

uint8_t *	CreateJpeg (uint8_t image, int size, int quality, int width, int height)
	Call rgb to jpeg for C Plugin.

const char *	GrabtypeToString (Grabtype t)

bool	isValidStartCode (const uint8_t *data, int offset, int size, int &startCodeLength)
	Check for a 0x000001 or 0x00000001 start code.

static int	NalUnitType (const uint8_t *data, int offset, int startCodeLength)
	Return the nal unit type.

static void	glCheckError (const char stmt, const char fname, int line)
	Check for OpenGL errors and log them.

static void	eglCheckError (const char stmt, const char fname, int line)
	Check for EGL errors and log them.

static bool	isInterlacedFrame (AVFrame *frame)
	Check, if this is an interlaced frame.

static const char *	av_err2string (int errnum)
	Workaround for av_err2str() not working with C++.

static const char *	Timestamp2String (int64_t ts, uint8_t divisor)
	Nice time-stamp string.

static uint32_t	ReadBytes (const uint8_t *data, int count)
	Return count amount of bytes from data

void	cBufferFillLevelLowPassFilter::Reset ()
	Resets the filter state.

void	cBufferFillLevelLowPassFilter::ResetFramesCounters ()
	Resets the received and written frames counters.

void	cBufferFillLevelLowPassFilter::UpdateAvgBufferFillLevel (int)
	Updates the buffer fill level average.

const char *	cBufferFillLevelLowPassFilter::StateToString (State d)
	Converts the filter state to a string representation.

void	cGrabBuffer::FreeDrmBuf (void)
	Free the grabbed drm buffer.

void	cGrabBuffer::SetDrmBuf (cDrmBuffer *)
	Set the grab buffer and the dimensions how it is presented on the screen.

bool	cSoftHdGrab::Start (bool, int, int, int, int, int)
	Start a grab in the video renderer.

uint8_t *	cSoftHdGrab::GetGrab (int , int , int , int , int *, Grabtype)
	Convert the cloned drm buffer data to RGB(void, pip) or ARGB (osd) and return a pointer to the raw data.

bool	cSoftHdGrab::ProcessGrab (void)
	Start the conversion.

int	cH264Parser::GetSPSOffset (void)
	Get the SPS offset.

int	cH264Parser::GetPPSOffset (void)
	Get the PPS offset.

int	cH264Parser::GetSliceOffset (void)
	Get the slice offset.

	cH264Parser::cH264Parser (AVPacket *, int, int, int)
	Init the h264 parser and detect the nalu types.

void	cH264Parser::AddInvalidReference (int, int)
	Adds an invalid reference.

void	cH264Parser::AddValidReference (int)
	Adds a valid reference.

void	cH264Parser::BuildInvalidReferenceString (int)
	Add a whitespace-separated list of all invalid references to the log output string.

void	cH264Parser::BuildValidReferenceString (void)
	Add a whitespace-separated list of all valid references to the log output string.

void	cH264Parser::AddFrameNumber (int)
	Add the frame number to the log output string.

void	cH264Parser::PrintStreamData (void)
	Print raw stream data of the first 35 bytes.

void	cH264Parser::PrintNalUnits (void)
	Print the previously created log output string.

unsigned int	cH264Parser::ReadBit (void)
	Read the next bit of a stream.

unsigned int	cH264Parser::ReadBits (int)
	Read n number of bits of a stream.

unsigned int	cH264Parser::ReadExponentialGolombCode (void)
	Read an unsigned exponential-golomb coded integer.

unsigned int	cH264Parser::ReadSE (void)
	Read a signed exponential-golomb coded integer.

void	cH264Parser::ConvertEBSPtoRBSP (const uint8_t *, int)

void	cJitterTracker::PacketReceived (void)
	Called each time a packet is received.

void	cJitterTracker::Reset (void)
	Resets the jitter tracker.

static std::shared_ptr< cSoftHdLogger >	cSoftHdLogger::GetLogger ()
	Get an instance to the global logger.

void	cSoftHdLogger::SetLogLevel (int level)
	Set the loglevel.

void	cSoftHdLogger::LogFatal (const char *format,...)
	Log to syslog LOG_ERR and abort.

void	cSoftHdLogger::LogError (const char *format,...)
	Log to syslog LOG_ERR.

void	cSoftHdLogger::LogWarning (const char *format,...)
	Log to syslog LOG_WARNING.

void	cSoftHdLogger::LogInfo (const char *format,...)
	Log to syslog LOG_INFO.

void	cSoftHdLogger::LogDebug (const char *format,...)
	Log to syslog LOG_DEBUG.

void	cSoftHdLogger::LogDebug2 (const int cat, const char *format,...)
	Log to syslog LOG_DEBUG and add logging category to output.

void	cSoftHdLogger::LogFFmpeg (const char *, va_list)
	Log to syslog LOG_DEBUG and add prefix [FFMpeg] to output.

static void	cSoftHdLogger::LogFFmpegCallback (void , int, const char , va_list)
	Callback for ffmpeg logs.

	cPes::cPes (const uint8_t *, int)
	Create a PES packet parser.

void	cPes::Init (void)
	Initialize and validate the PES packet.

bool	cPes::IsValid (void)
	Check if the PES packet is valid.

bool	cPes::IsHeaderValid (void)
	Check if the PES header is valid.

bool	cPes::HasPts (void)
	Check if the PES packet contains a Presentation Time Stamp (PTS)

int64_t	cPes::GetPts (void)
	Get the Presentation Time Stamp (PTS) from the PES header.

const uint8_t *	cPes::GetPayload (void)
	Get a pointer to the PES payload data.

int	cPes::GetPayloadSize (void)
	Get the size of the PES payload.

int	cPes::GetPacketLength (void)
	Get the total length of the PES packet.

AVPacket *	cReassemblyBuffer::PopAvPacket (int)
	Pop an AVPacket from the reassembly buffer.

bool	cReassemblyBufferVideo::ParseCodecHeader (const uint8_t *, int)
	Parse video codec header to detect codec type.

bool	cReassemblyBufferVideo::HasLeadingZero (const uint8_t *, int)
	Check if video data has a leading zero byte before the start code.

AVPacket *	cReassemblyBufferAudio::PopAvPacket (void) override
	Pop an audio AVPacket from the reassembly buffer.

AVCodecID	cReassemblyBufferAudio::TruncateBufferUntilFirstValidData (void)
	Truncate buffer until the first valid audio frame.

SyncWordInfo	cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord ()
	Find two consecutive audio frames with the same sync word.

SyncWordInfo	cReassemblyBufferAudio::FindSyncWord (const uint8_t *, int)
	Find the first audio sync word in data.

AVCodecID	cReassemblyBufferAudio::DetectCodecFromSyncWord (const uint8_t *, int)
	Detect audio codec from sync word pattern.

int	cReassemblyBufferAudio::GetFrameSizeForCodec (AVCodecID, const uint8_t *)
	Get the frame size for a given codec and frame header.

void	cReassemblyBuffer::Reset (void)
	Reset the reassembly buffer.

void	cPtsTrackingBuffer::Push (const uint8_t *, int, int64_t)
	Push data into the PTS tracking buffer.

void	cPtsTrackingBuffer::Erase (size_t)
	Erase data from the beginning of the buffer.

int64_t	cPtsTrackingBuffer::GetPts (void)
	Get the PTS value for the current buffer position.

Variables
static const std::map< AVCodecID, CodecInfo >	AudioCodecMap
	Map of Audio Codec Information.

Detailed Description

Miscellaneous Helper Functions.

{

H.264 Parser.

Event Handler.

Controls the state machine.

{@

Macro Definition Documentation

◆ av_err2str

#define av_err2str ( err ) av_err2string(err)

Definition at line 112 of file misc.h.

◆ AV_LOGLEVEL

#define AV_LOGLEVEL AV_LOG_INFO

FFmpeg log level.

Definition at line 25 of file logger.h.

◆ AV_NOPTS_VALUE

#define AV_NOPTS_VALUE INT64_C(0x8000000000000000)

Definition at line 74 of file misc.h.

◆ BLEND

#define BLEND	(	back,
		front,
		alpha
	)	((front * alpha) + (back * (255 - alpha))) / 255

Definition at line 40 of file grab.cpp.

◆ EGL_CHECK

#define EGL_CHECK ( stmt )

Value:

        do { \
        stmt; \
		eglCheckError(#stmt, __FILE__, __LINE__); \
    } while (0)

eglCheckError macro

Definition at line 62 of file misc.h.

◆ GL_CHECK

#define GL_CHECK ( stmt )

Value:

        do { \
        stmt; \
		glCheckError(#stmt, __FILE__, __LINE__); \
    } while (0)

glCheckError macro

Definition at line 56 of file misc.h.

◆ LOGDEBUG

#define LOGDEBUG cSoftHdLogger::GetLogger()->LogDebug

log to LOG_DEBUG

Definition at line 40 of file logger.h.

◆ LOGDEBUG2

#define LOGDEBUG2 cSoftHdLogger::GetLogger()->LogDebug2

log to LOG_DEBUG and add a prefix

Definition at line 42 of file logger.h.

◆ LOGERROR

#define LOGERROR cSoftHdLogger::GetLogger()->LogError

log to LOG_ERR

Definition at line 34 of file logger.h.

◆ LOGFATAL

#define LOGFATAL cSoftHdLogger::GetLogger()->LogFatal

log to LOG_ERR and abort

Definition at line 32 of file logger.h.

◆ LOGINFO

#define LOGINFO cSoftHdLogger::GetLogger()->LogInfo

log to LOG_INFO

Definition at line 38 of file logger.h.

◆ LOGWARNING

#define LOGWARNING cSoftHdLogger::GetLogger()->LogWarning

log to LOG_WARN

Definition at line 36 of file logger.h.

◆ OPAQUE

#define OPAQUE 0xff

Definition at line 37 of file grab.cpp.

◆ TRANSPARENT

#define TRANSPARENT 0x00

Definition at line 38 of file grab.cpp.

◆ UNMULTIPLY

#define UNMULTIPLY	(	color,
		alpha
	)	((0xff * color) / alpha)

Definition at line 39 of file grab.cpp.

◆ VIDEO_SURFACES_MAX

#define VIDEO_SURFACES_MAX 3

maximum video surfaces kept by the filter and render queues

Definition at line 77 of file misc.h.

Enumeration Type Documentation

◆ Grabtype

enum Grabtype

Enumerator
GRABVIDEO
GRABPIP
GRABOSD

Definition at line 27 of file grab.h.

◆ LogFlags

enum LogFlags

Logger Flags.

depending on the flag used in the macro, logging is enabled and gets a nice prefix in the syslog.

Enumerator
L_DEBUG	common debug logs
L_AV_SYNC	audio/video sync logs
L_SOUND	sound logs
L_OSD	osd logs
L_DRM	drm logs
L_CODEC	codec logs
L_STILL	stillpicture logs
L_TRICK	trickspeed logs
L_MEDIA	mediaplayer logs
L_OPENGL	opengl osd logs
L_OPENGL_TIME	opengl osd flush time measurement
L_OPENGL_TIME_ALL	opengl osd all commands time measurement
L_PACKET	decoder packet/frame tracking logs
L_GRAB	grabbing logs
L_FFMPEG	ffmpeg logs

Definition at line 50 of file logger.h.

◆ NalUnitTypes

enum NalUnitTypes

Enumerator
NALU_TYPE_NON_IDR
NALU_TYPE_PART_A
NALU_TYPE_PART_B
NALU_TYPE_PART_C
NALU_TYPE_IDR
NALU_TYPE_SEI
NALU_TYPE_SPS
NALU_TYPE_PPS
NALU_TYPE_AUD

Definition at line 28 of file h264parser.h.

Function Documentation

◆ AddFrameNumber()

void cH264Parser::AddFrameNumber ( int num )

Add the frame number to the log output string.

Parameters

num	frame number to add to the string

Definition at line 600 of file h264parser.cpp.

References cH264Parser::m_naluString.

◆ AddInvalidReference()

void cH264Parser::AddInvalidReference	(	int	modRef,
		int	frameNumber
	)

Adds an invalid reference.

Parameters

modRef	number of the reference frame
frameNumber	number of the frame to add

Definition at line 541 of file h264parser.cpp.

References cH264Parser::m_hasInvalidBackwardReferences, cH264Parser::m_hasInvalidReferences, and cH264Parser::m_invalidReferences.

◆ AddValidReference()

void cH264Parser::AddValidReference ( int modRef )

Adds a valid reference.

Parameters

modRef number of the reference frame

Definition at line 555 of file h264parser.cpp.

References cH264Parser::m_hasValidReferences, and cH264Parser::m_validReferences.

◆ AlphaBlend()

static void AlphaBlend	(	uint8_t *	result,
		uint8_t *	front,
		uint8_t *	back,
		const unsigned int	width,
		const unsigned int	height
	)

static

Blend two images.

Both, front and back image data have to be same size front is the OSD (ARGB) back is the video (RGB) result is RGB

Parameters

[out]	result	pointer to the resulting image data
[in]	front	pointer to the upper image data
[in]	back	pointer to the lower image data
[in]	width	image width
[in]	height	image height

Definition at line 204 of file grab.cpp.

References BLEND, OPAQUE, TRANSPARENT, and UNMULTIPLY.

Referenced by cSoftHdGrab::ProcessGrab().

◆ av_err2string()

static const char * av_err2string ( int errnum )

inlinestatic

Workaround for av_err2str() not working with C++.

Definition at line 100 of file misc.h.

◆ BlitVideo()

static int BlitVideo	(	uint8_t *	dst,
		uint8_t *	src,
		int	dstW,
		int	dstH,
		int	dstX,
		int	dstY,
		int	srcW,
		int	srcH
	)

static

Blit the video on black background.

Parameters

[in]	dst	pointer to the destination video
[in]	src	pointer to the source video
[in]	dstW	destination width of the image
[in]	dstH	destination height of the image
[in]	dstX	x offset of the (already scaled) video on the image
[in]	dstY	y offset of the (already scaled) video on the image
[in]	srcW	source video width
[in]	srcH	source video height

Returns: 0 on success, -1 on error

Definition at line 265 of file grab.cpp.

References L_GRAB, and LOGDEBUG2.

Referenced by cSoftHdGrab::ProcessGrab().

◆ BufToRgb()

static uint8_t * BufToRgb	(	cDrmBuffer *	buf,
		int *	size,
		int	dstW,
		int	dstH,
		enum AVPixelFormat	dstPixFmt
	)

static

Convert a DRM buffer to rgb format image.

Conversion is done with ffmpegs swscale

Parameters

[in]	buf	pointer to the source drm buffer struct
[out]	size	size of the return data
[in]	dstW	width of the returned image
[in]	dstH	height of the returned image
[in]	dstPixFmt	pixel format of the returned image

Returns: a pointer to the image data

Definition at line 75 of file grab.cpp.

References DrmFormatToAVFormat(), L_GRAB, LOGDEBUG2, and LOGERROR.

Referenced by cSoftHdGrab::GetGrab().

◆ BuildInvalidReferenceString()

void cH264Parser::BuildInvalidReferenceString ( int frameNumber )

Add a whitespace-separated list of all invalid references to the log output string.

Parameters

frameNumber only build the string up to the given frameNumber

Definition at line 566 of file h264parser.cpp.

References cH264Parser::m_hasInvalidReferences, cH264Parser::m_invalidReferences, and cH264Parser::m_naluString.

◆ BuildValidReferenceString()

void cH264Parser::BuildValidReferenceString ( void )

Add a whitespace-separated list of all valid references to the log output string.

Definition at line 583 of file h264parser.cpp.

References cH264Parser::m_hasValidReferences, cH264Parser::m_naluString, and cH264Parser::m_validReferences.

◆ cH264Parser()

cH264Parser::cH264Parser	(	AVPacket *	avpkt,
		int	maxFrameNum,
		int	refIdxL0,
		int	refIdxL1
	)

Init the h264 parser and detect the nalu types.

Parameters

avpkt	AVPacket to parse
maxFrameNum	log2MaxFrameNumMinus4 from a previous SPS parsing, will be overwritten if this packet contains SPS
refIdxL0	ppsNumRefIdxL0DefaultActiveMinus1 from a previous PPS parsing, will be overwritten if this packet contains PPS
refIdxL1	ppsNumRefIdxL1DefaultActiveMinus1 from a previous PPS parsing, will be overwritten if this packet contains PPS

Definition at line 159 of file h264parser.cpp.

References cH264Parser::ConvertEBSPtoRBSP(), cH264Parser::GetPPSOffset(), cH264Parser::GetSliceOffset(), cH264Parser::GetSPSOffset(), isValidStartCode(), cH264Parser::m_frameNum, cH264Parser::m_hasPPS, cH264Parser::m_hasSPS, cH264Parser::m_height, cH264Parser::m_isIDR, cH264Parser::m_isReference, cH264Parser::m_log2MaxFrameNumMinus4, cH264Parser::m_mbaff, cH264Parser::m_nalRefIdc, cH264Parser::m_naluString, cH264Parser::m_nalutype, cH264Parser::m_nCurrentBit, cH264Parser::m_nLength, cH264Parser::m_numRefIdxL0Active, cH264Parser::m_numRefIdxL1Active, cH264Parser::m_parseError, cH264Parser::m_pAvpkt, cH264Parser::m_ppsNumRefIdxL0DefaultActiveMinus1, cH264Parser::m_ppsNumRefIdxL1DefaultActiveMinus1, cH264Parser::m_pStart, cH264Parser::m_rbsp, cH264Parser::m_refMods, cH264Parser::m_sliceType, cH264Parser::m_width, NALU_TYPE_AUD, NALU_TYPE_IDR, NALU_TYPE_NON_IDR, NALU_TYPE_PART_A, NALU_TYPE_PART_B, NALU_TYPE_PART_C, NALU_TYPE_PPS, NALU_TYPE_SEI, NALU_TYPE_SPS, NalUnitType(), cH264Parser::ReadBit(), cH264Parser::ReadBits(), cH264Parser::ReadExponentialGolombCode(), and cH264Parser::ReadSE().

◆ ConvertEBSPtoRBSP()

void cH264Parser::ConvertEBSPtoRBSP	(	const uint8_t *	src,
		int	length
	)

private

Definition at line 722 of file h264parser.cpp.

References cH264Parser::m_rbsp.

Referenced by cH264Parser::cH264Parser().

◆ cPes()

cPes::cPes	(	const uint8_t *	data,
		int	size
	)

Create a PES packet parser.

Initializes the parser with a pointer to PES packet data and its size. The actual validation is performed by calling Init() in derived classes.

Parameters

data	Pointer to the raw PES packet data
size	Size of the PES packet in bytes

Definition at line 203 of file pes.cpp.

◆ CreateJpeg()

uint8_t * CreateJpeg	(	uint8_t *	image,
		int *	size,
		int	quality,
		int	width,
		int	height
	)

Call rgb to jpeg for C Plugin.

Definition at line 428 of file grab.cpp.

Referenced by cSoftHdGrab::ProcessGrab().

◆ DetectCodecFromSyncWord()

AVCodecID cReassemblyBufferAudio::DetectCodecFromSyncWord	(	const uint8_t *	syncWord,
		int	size
	)

Detect audio codec from sync word pattern.

Checks if the data starts with a valid sync word for any supported audio codec. Uses the AudioCodecMap to test sync word patterns for MP2, AAC LATM, AAC ADTS, AC3, and E-AC3.

Parameters

syncWord	Pointer to potential sync word data
size	Size of available data

Returns: Detected AVCodecID, or AV_CODEC_ID_NONE if no match

Definition at line 590 of file pes.cpp.

References AudioCodecMap.

Referenced by cReassemblyBufferAudio::FindSyncWord(), cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ DrmFormatToAVFormat()

enum AVPixelFormat DrmFormatToAVFormat ( cDrmBuffer * buf )

Convert a DRM format to a ffmpeg AV format.

Definition at line 45 of file grab.cpp.

Referenced by BufToRgb().

◆ eglCheckError()

static void eglCheckError	(	const char *	stmt,
		const char *	fname,
		int	line
	)

inlinestatic

Check for EGL errors and log them.

Definition at line 49 of file misc.h.

References LOGERROR.

◆ Erase()

void cPtsTrackingBuffer::Erase ( size_t amount )

Erase data from the beginning of the buffer.

Removes the specified number of bytes from the front of the buffer and adjusts all PTS positions accordingly. The PTS value for the new position 0 is preserved by finding the last PTS value before the erase point.

This ensures that when frames are popped from the buffer, they retain the PTS of the PES packet where the frame started, even if that PES packet has been partially consumed.

Parameters

amount Number of bytes to erase from the beginning

Definition at line 666 of file pes.cpp.

References AV_NOPTS_VALUE, LOGFATAL, cPtsTrackingBuffer::m_data, cPtsTrackingBuffer::m_identifier, and cPtsTrackingBuffer::m_pts.

Referenced by cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord(), cReassemblyBuffer::PopAvPacket(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and cReassemblyBufferAudio::TruncateBufferUntilFirstValidData().

◆ FindSyncWord()

SyncWordInfo cReassemblyBufferAudio::FindSyncWord	(	const uint8_t *	data,
		int	size
	)

Find the first audio sync word in data.

Scans the data byte-by-byte looking for any recognized audio sync word pattern. Checks all supported audio codecs (MP2, AAC LATM, AAC ADTS, AC3, E-AC3).

Parameters

data	Pointer to audio data
size	Size of the data in bytes

Returns: SyncWordInfo with detected codec and position, or AV_CODEC_ID_NONE if not found

Definition at line 568 of file pes.cpp.

References cReassemblyBufferAudio::DetectCodecFromSyncWord().

Referenced by cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ FindTwoConsecutiveFramesWithSameSyncWord()

SyncWordInfo cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord ( void )

private

Find two consecutive audio frames with the same sync word.

Searches the buffer for a valid audio frame followed immediately by another frame of the same codec. This validates that the sync word and frame header are genuine and not false positives in random data.

The function modifies the buffer internally by erasing false positives as it searches. When no sync word is found, it keeps the last MAX_HEADER_SIZE bytes.

Returns: SyncWordInfo with codec ID and position, or AV_CODEC_ID_NONE if not found

Definition at line 521 of file pes.cpp.

References AudioCodecMap, cReassemblyBufferAudio::DetectCodecFromSyncWord(), cPtsTrackingBuffer::Erase(), cReassemblyBufferAudio::FindSyncWord(), cPtsTrackingBuffer::GetSize(), cReassemblyBuffer::m_buffer, cReassemblyBufferAudio::MAX_HEADER_SIZE, and cPtsTrackingBuffer::Peek().

Referenced by cReassemblyBufferAudio::TruncateBufferUntilFirstValidData().

◆ FreeDrmBuf()

void cGrabBuffer::FreeDrmBuf ( void )

Free the grabbed drm buffer.

Definition at line 290 of file grab.cpp.

References L_GRAB, LOGDEBUG2, cGrabBuffer::m_pBuf, and plane.

Referenced by cVideoRender::ClearGrabBuffers().

◆ GetFrameSizeForCodec()

int cReassemblyBufferAudio::GetFrameSizeForCodec	(	AVCodecID	codec,
		const uint8_t *	data
	)

Get the frame size for a given codec and frame header.

Calculates the frame size by parsing the codec-specific frame header. Only used for testing purposes to expose the AudioCodecMap frame size calculation.

Parameters

codec	The audio codec ID
data	Pointer to the frame header data

Returns: Frame size in bytes

Exceptions

std::out_of_range	if codec is not in AudioCodecMap
std::invalid_argument	if frame header is invalid

Definition at line 614 of file pes.cpp.

References AudioCodecMap.

Referenced by TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ GetGrab()

uint8_t * cSoftHdGrab::GetGrab	(	int *	size,
		int *	width,
		int *	height,
		int *	x,
		int *	y,
		Grabtype	type
	)

private

Convert the cloned drm buffer data to RGB(void, pip) or ARGB (osd) and return a pointer to the raw data.

Parameters

[out]	size	size of the grabbed buffer
[out]	width	width of the grabbed buffer
[out]	height	height of the grabbed buffer
[out]	x	x offset of the grabbed buffer
[out]	y	y offset of the grabbed buffer
[in]	buffer	type buffer type (Grabtype)

Returns: a pointer to the raw buffer data

Definition at line 373 of file grab.cpp.

References BufToRgb(), cVideoRender::GetGrabbedOsdBuffer(), cVideoRender::GetGrabbedPipBuffer(), cVideoRender::GetGrabbedVideoBuffer(), GRABOSD, GRABPIP, GrabtypeToString(), GRABVIDEO, L_GRAB, LOGDEBUG2, LOGFATAL, cSoftHdGrab::m_pRender, and plane.

Referenced by cSoftHdGrab::ProcessGrab().

◆ GetLogger()

std::shared_ptr< cSoftHdLogger > cSoftHdLogger::GetLogger ( )

static

Get an instance to the global logger.

Returns: pointer to the logger instance

Definition at line 50 of file logger.cpp.

References cSoftHdLogger::cSoftHdLogger().

Referenced by cSoftHdLogger::LogFFmpegCallback(), cSoftHdConfig::SetupParse(), and cMenuSetupSoft::Store().

◆ GetPacketLength()

int cPes::GetPacketLength ( void )

Get the total length of the PES packet.

Returns the complete size of the PES packet including both header and payload. The length is read from the PES packet header (bytes 4-5).

For packets with a specified length field (common for audio):

Returns the actual PES packet length from the header
Calculated as 6 + length_field (per H.222.0 standard)
The length_field specifies bytes after the 6-byte header prefix (3 bytes start code + 1 byte stream ID + 2 bytes length field)

For unbounded packets (length field = 0, common for video streams):

Returns the input buffer size (m_size)

Returns: Total size in bytes: actual packet length if specified, otherwise input buffer size

Definition at line 336 of file pes.cpp.

References cPes::m_data, and cPes::m_size.

◆ GetPayload()

const uint8_t * cPes::GetPayload ( void )

Get a pointer to the PES payload data.

Returns a pointer to the start of the payload data, skipping the PES header. For H.264/HEVC streams with a leading zero byte, the leading zero is also skipped.

Returns: Pointer to the payload data

Definition at line 301 of file pes.cpp.

References cPes::m_data.

◆ GetPayloadSize()

int cPes::GetPayloadSize ( void )

Get the size of the PES payload.

Calculates the size of the payload by subtracting the header size (and optional leading zero for H.264/HEVC) from the total packet size.

Returns: Size of the payload in bytes

Definition at line 314 of file pes.cpp.

References cPes::m_data, and cPes::m_size.

◆ GetPPSOffset()

int cH264Parser::GetPPSOffset ( void )

private

Get the PPS offset.

Return values

positive	value PPS offset in the data stream
-1	if there is no PPS

Definition at line 107 of file h264parser.cpp.

References isValidStartCode(), cH264Parser::m_pAvpkt, and NalUnitType().

Referenced by cH264Parser::cH264Parser().

◆ GetPts() [1/2]

int64_t cPes::GetPts ( void )

Get the Presentation Time Stamp (PTS) from the PES header.

Extracts the PTS value from the PES packet header if present. The PTS indicates when the decoded content should be presented.

Returns: The PTS value in 90 kHz units, or AV_NOPTS_VALUE if no PTS is present

Definition at line 285 of file pes.cpp.

References AV_NOPTS_VALUE, cPes::HasPts(), and cPes::m_data.

◆ GetPts() [2/2]

int64_t cPtsTrackingBuffer::GetPts ( void )

Get the PTS value for the current buffer position.

Returns the PTS associated with position 0 in the buffer, which represents the presentation timestamp for the data at the front of the buffer.

Returns: PTS value, or AV_NOPTS_VALUE if no PTS is available

Definition at line 704 of file pes.cpp.

References AV_NOPTS_VALUE, and cPtsTrackingBuffer::m_pts.

Referenced by cReassemblyBuffer::PopAvPacket(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ GetSliceOffset()

int cH264Parser::GetSliceOffset ( void )

private

Get the slice offset.

Return values

positive	value slice offset in the data stream
-1	if there is no slice

Definition at line 132 of file h264parser.cpp.

References isValidStartCode(), cH264Parser::m_pAvpkt, and NalUnitType().

Referenced by cH264Parser::cH264Parser().

◆ GetSPSOffset()

int cH264Parser::GetSPSOffset ( void )

private

Get the SPS offset.

Return values

positive	value SPS offset in the data stream
-1	if there is no SPS

Definition at line 82 of file h264parser.cpp.

References isValidStartCode(), cH264Parser::m_pAvpkt, and NalUnitType().

Referenced by cH264Parser::cH264Parser().

◆ glCheckError()

static void glCheckError	(	const char *	stmt,
		const char *	fname,
		int	line
	)

inlinestatic

Check for OpenGL errors and log them.

Definition at line 40 of file misc.h.

References LOGERROR.

◆ GrabtypeToString()

const char * GrabtypeToString ( Grabtype t )

inline

Definition at line 33 of file grab.h.

References GRABOSD, GRABPIP, and GRABVIDEO.

Referenced by cSoftHdGrab::GetGrab().

◆ HasLeadingZero()

bool cReassemblyBufferVideo::HasLeadingZero	(	const uint8_t *	data,
		int	size
	)

Check if video data has a leading zero byte before the start code.

Some H.264/HEVC streams include a leading zero byte (0x00) before the standard start code (0x000001). This method detects that pattern.

Parameters

data	Pointer to video data
size	Size of the data in bytes

Returns: true if a leading zero is present, false otherwise

Definition at line 438 of file pes.cpp.

References ReadBytes(), cReassemblyBufferVideo::VIDEO_FRAME_START_CODE, and cReassemblyBufferVideo::VIDEO_FRAME_START_CODE_LEN.

Referenced by cReassemblyBufferVideo::ParseCodecHeader(), cSoftHdDevice::PlayVideoInternal(), and TEST_CASE().

◆ HasPts()

bool cPes::HasPts ( void )

Check if the PES packet contains a Presentation Time Stamp (PTS)

Examines the PES header flags to determine if a PTS is present in the packet. The PTS presence is indicated by specific bits in the PES header flags field.

Returns: true if the PES packet contains a PTS, false otherwise

Definition at line 272 of file pes.cpp.

References cPes::m_data.

Referenced by cPes::GetPts().

◆ Init()

void cPes::Init ( void )

protected

Initialize and validate the PES packet.

Performs validation checks on the PES packet structure:

Validates the PES header (start code prefix)
Checks if the stream ID matches the expected type (audio/video)
Ensures the packet has sufficient size for the header
Verifies the payload offset is within bounds

Sets m_valid to true if all checks pass. Called by derived class constructors.

Definition at line 219 of file pes.cpp.

References cPes::GetStreamId(), cPes::IsHeaderValid(), cPes::IsStreamIdValid(), LOGDEBUG, LOGWARNING, cPes::m_data, cPes::m_size, and cPes::m_valid.

Referenced by cPesAudio::cPesAudio(), and cPesVideo::cPesVideo().

◆ IsHeaderValid()

bool cPes::IsHeaderValid ( void )

protected

Check if the PES header is valid.

Validates that the PES packet has a valid header by checking:

The packet is long enough to contain a header
The start code prefix (0x000001) is present

Returns: true if the header is valid, false otherwise

Definition at line 259 of file pes.cpp.

References cPes::m_data, cPes::m_size, cPes::PES_PACKET_START_CODE_PREFIX, and ReadBytes().

Referenced by cPes::Init().

◆ isInterlacedFrame()

static bool isInterlacedFrame ( AVFrame * frame )

inlinestatic

Check, if this is an interlaced frame.

Parameters

frame AVFrame

Returns: true, if this frame is an interlaced frame

Definition at line 86 of file misc.h.

Referenced by cVideoFilter::Action(), cVideoDecoder::ReceiveFrame(), and cVideoStream::RenderFrame().

◆ IsValid()

bool cPes::IsValid ( void )

Check if the PES packet is valid.

Validates that the PES packet is well-formed and matches the expected stream type by checking:

The PES header is valid
The stream ID matches the expected stream type (video or audio)

The stream ID is masked with 0xF0 to check the stream type category (e.g., 0xE0 for video, 0xC0 for audio) while ignoring the low nibble which indicates the specific stream number.

Video streams have stream IDs in the range 0xE0-0xEF according to H.222.0 03/2017 Table 2-22, audio streams have IDs in the range 0xC0-0xCF.

Returns: true if the packet is valid and matches the expected stream type, false otherwise

Definition at line 245 of file pes.cpp.

References cPes::m_valid.

◆ isValidStartCode()

bool isValidStartCode	(	const uint8_t *	data,
		int	offset,
		int	size,
		int &	startCodeLength
	)

Check for a 0x000001 or 0x00000001 start code.

Parameters

[in]	data	pointer to the data stream
[in]	offset	start parsing at offset
[in]	size	size of data
[out]	startCodeLength	start code length (3 or 4)

Return values

true	if a valid start code was detected
false	no valid startcode was detected

Definition at line 47 of file h264parser.cpp.

References ReadBytes().

Referenced by cH264Parser::cH264Parser(), cH264Parser::GetPPSOffset(), cH264Parser::GetSliceOffset(), and cH264Parser::GetSPSOffset().

◆ LogDebug()

void cSoftHdLogger::LogDebug	(	const char *	format,
			...
	)

Log to syslog LOG_DEBUG.

Definition at line 147 of file logger.cpp.

References cSoftHdLogger::m_logLevel, and cSoftHdLogger::MAX_LOGMESSAGE_SIZE.

◆ LogDebug2()

void cSoftHdLogger::LogDebug2	(	const int	cat,
		const char *	format,
			...
	)

Log to syslog LOG_DEBUG and add logging category to output.

Definition at line 166 of file logger.cpp.

References L_AV_SYNC, L_CODEC, L_DEBUG, L_DRM, L_GRAB, L_MEDIA, L_OPENGL, L_OPENGL_TIME, L_OPENGL_TIME_ALL, L_OSD, L_PACKET, L_SOUND, L_STILL, L_TRICK, cSoftHdLogger::m_logLevel, and cSoftHdLogger::MAX_LOGMESSAGE_SIZE.

◆ LogError()

void cSoftHdLogger::LogError	(	const char *	format,
			...
	)

Log to syslog LOG_ERR.

Definition at line 90 of file logger.cpp.

References cSoftHdLogger::MAX_LOGMESSAGE_SIZE, and SysLogLevel.

◆ LogFatal()

void cSoftHdLogger::LogFatal	(	const char *	format,
			...
	)

Log to syslog LOG_ERR and abort.

Definition at line 69 of file logger.cpp.

References cSoftHdLogger::MAX_LOGMESSAGE_SIZE, and SysLogLevel.

◆ LogFFmpeg()

void cSoftHdLogger::LogFFmpeg	(	const char *	fmt,
		va_list	vl
	)

Log to syslog LOG_DEBUG and add prefix [FFMpeg] to output.

Definition at line 226 of file logger.cpp.

References AV_LOGLEVEL, L_FFMPEG, cSoftHdLogger::m_logLevel, and cSoftHdLogger::MAX_LOGMESSAGE_SIZE.

◆ LogFFmpegCallback()

void cSoftHdLogger::LogFFmpegCallback	(	void *	ptr,
		int	level,
		const char *	fmt,
		va_list	vl
	)

static

Callback for ffmpeg logs.

Log to LOG_DEBUG and add prefix to output

Definition at line 248 of file logger.cpp.

References cSoftHdLogger::GetLogger().

Referenced by cVideoDecoder::cVideoDecoder().

◆ LogInfo()

void cSoftHdLogger::LogInfo	(	const char *	format,
			...
	)

Log to syslog LOG_INFO.

Definition at line 128 of file logger.cpp.

References cSoftHdLogger::MAX_LOGMESSAGE_SIZE, and SysLogLevel.

◆ LogWarning()

void cSoftHdLogger::LogWarning	(	const char *	format,
			...
	)

Log to syslog LOG_WARNING.

Definition at line 109 of file logger.cpp.

References cSoftHdLogger::MAX_LOGMESSAGE_SIZE, and SysLogLevel.

◆ NalUnitType()

static int NalUnitType	(	const uint8_t *	data,
		int	offset,
		int	startCodeLength
	)

static

Return the nal unit type.

Parameters

data	pointer to the data stream
offset	start parsing at offset
startCodeLength	start code length (3 or 4)

Returns: the nal unit type

Definition at line 71 of file h264parser.cpp.

Referenced by cH264Parser::cH264Parser(), cH264Parser::GetPPSOffset(), cH264Parser::GetSliceOffset(), and cH264Parser::GetSPSOffset().

◆ PacketReceived()

void cJitterTracker::PacketReceived ( void )

Called each time a packet is received.

Calculates the diff in PTS to the last received packet and compares that to the diff of the wall clock time of the last received packet to now.

Definition at line 27 of file jittertracker.cpp.

References cJitterTracker::m_firstPacket, cJitterTracker::m_lastDiffMs, cJitterTracker::m_lastTime, cJitterTracker::m_longTermMaxJitterMs, cJitterTracker::m_packetCounter, cJitterTracker::m_secondPacket, and cJitterTracker::m_shortTermMaxJitterMs.

Referenced by cSoftHdDevice::PlayAudio(), and cSoftHdDevice::PlayVideoInternal().

◆ ParseCodecHeader()

bool cReassemblyBufferVideo::ParseCodecHeader	(	const uint8_t *	fragment,
		int	size
	)

Parse video codec header to detect codec type.

Analyzes video frame start codes and stream type bytes to identify the codec. Supports MPEG2, H.264, and HEVC video codecs.

Parameters

fragment	Pointer to video frame data
size	Size of the fragment in bytes

Returns: true if a codec was detected, false otherwise

Definition at line 404 of file pes.cpp.

References cReassemblyBufferVideo::H264_STREAM_TYPE, cReassemblyBufferVideo::HasLeadingZero(), cReassemblyBufferVideo::HEVC_STREAM_TYPE, cReassemblyBuffer::m_codec, cReassemblyBufferVideo::MPEG2_STREAM_TYPE, ReadBytes(), cReassemblyBufferVideo::VIDEO_FRAME_START_CODE, and cReassemblyBufferVideo::VIDEO_FRAME_START_CODE_LEN.

Referenced by cSoftHdDevice::PlayVideoInternal(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ PopAvPacket() [1/2]

AVPacket * cReassemblyBuffer::PopAvPacket ( int size )

protected

Pop an AVPacket from the reassembly buffer.

Creates an AVPacket containing the specified amount of data from the buffer.

Parameters

size	Number of bytes to pop from the buffer

Returns: Allocated AVPacket with data, or nullptr if size is 0

Definition at line 357 of file pes.cpp.

References AV_NOPTS_VALUE, cPtsTrackingBuffer::Erase(), cPtsTrackingBuffer::GetPts(), LOGFATAL, cReassemblyBuffer::m_buffer, cReassemblyBuffer::m_lastPoppedPts, and cPtsTrackingBuffer::Peek().

◆ PopAvPacket() [2/2]

AVPacket * cReassemblyBufferAudio::PopAvPacket ( void )

overridevirtual

Pop an audio AVPacket from the reassembly buffer.

Truncates the buffer to the first valid audio frame, detects the codec, and pops a complete audio frame as an AVPacket.

Returns: Allocated AVPacket with one audio frame, or nullptr if no valid frame found

Implements cReassemblyBuffer.

Definition at line 455 of file pes.cpp.

References AudioCodecMap, AV_NOPTS_VALUE, LOGERROR, LOGWARNING, cReassemblyBuffer::m_buffer, cReassemblyBuffer::m_codec, cReassemblyBufferAudio::m_ptsInvalid, cPtsTrackingBuffer::Peek(), cReassemblyBuffer::PopAvPacket(), and cReassemblyBufferAudio::TruncateBufferUntilFirstValidData().

Referenced by cSoftHdDevice::PlayAudio().

◆ PrintNalUnits()

void cH264Parser::PrintNalUnits ( void )

Print the previously created log output string.

Definition at line 634 of file h264parser.cpp.

References L_CODEC, LOGDEBUG2, cH264Parser::m_height, cH264Parser::m_naluString, and cH264Parser::m_width.

◆ PrintStreamData()

void cH264Parser::PrintStreamData ( void )

Print raw stream data of the first 35 bytes.

Definition at line 618 of file h264parser.cpp.

References LOGDEBUG, and cH264Parser::m_pAvpkt.

◆ ProcessGrab()

bool cSoftHdGrab::ProcessGrab ( void )

private

Start the conversion.

This does the following: 1) Get grabbed video data if available, otherwise create a black screen for video 2) Get grabbed pip data if available 3) Get grabbed osd data if available 4) Blit the video data into a black background image if it is scaled 5) If available, blit the pip data onto it 6) If available, blit the osd data onto it respecting alpha values 7) Scale the result to the user requested size 8) Create a jpg or pnm image as requested

Definition at line 447 of file grab.cpp.

References AlphaBlend(), BlitVideo(), CreateJpeg(), cSoftHdGrab::GetGrab(), GRABOSD, GRABPIP, GRABVIDEO, L_GRAB, LOGDEBUG2, cSoftHdGrab::m_grabbedHeight, cSoftHdGrab::m_grabbedImage, cSoftHdGrab::m_grabbedSize, cSoftHdGrab::m_grabbedWidth, cSoftHdGrab::m_isActive, cSoftHdGrab::m_isJpeg, cSoftHdGrab::m_quality, cSoftHdGrab::m_screenHeight, cSoftHdGrab::m_screenWidth, and ScaleRgb24().

Referenced by cSoftHdGrab::Start().

◆ Push()

void cPtsTrackingBuffer::Push	(	const uint8_t *	data,
		int	size,
		int64_t	pts
	)

Push data into the PTS tracking buffer.

Appends data to the buffer and associates the PTS with the current buffer position if a valid PTS is provided.

Parameters

data	Pointer to data to append
size	Size of data in bytes
pts	Presentation timestamp, or AV_NOPTS_VALUE if not available

Definition at line 645 of file pes.cpp.

References AV_NOPTS_VALUE, cPtsTrackingBuffer::m_data, and cPtsTrackingBuffer::m_pts.

Referenced by cReassemblyBuffer::Push(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ ReadBit()

unsigned int cH264Parser::ReadBit ( void )

private

Read the next bit of a stream.

Definition at line 643 of file h264parser.cpp.

References cH264Parser::m_nCurrentBit, cH264Parser::m_nLength, cH264Parser::m_parseError, and cH264Parser::m_pStart.

Referenced by cH264Parser::cH264Parser(), cH264Parser::ReadBits(), and cH264Parser::ReadExponentialGolombCode().

◆ ReadBits()

unsigned int cH264Parser::ReadBits ( int n )

private

Read n number of bits of a stream.

Definition at line 660 of file h264parser.cpp.

References cH264Parser::m_nCurrentBit, cH264Parser::m_nLength, cH264Parser::m_parseError, and cH264Parser::ReadBit().

Referenced by cH264Parser::cH264Parser(), and cH264Parser::ReadExponentialGolombCode().

◆ ReadBytes()

static uint32_t ReadBytes	(	const uint8_t *	data,
		int	count
	)

inlinestatic

Return count amount of bytes from data

Definition at line 149 of file misc.h.

Referenced by cReassemblyBufferVideo::HasLeadingZero(), cPes::IsHeaderValid(), isValidStartCode(), and cReassemblyBufferVideo::ParseCodecHeader().

◆ ReadExponentialGolombCode()

unsigned int cH264Parser::ReadExponentialGolombCode ( void )

private

Read an unsigned exponential-golomb coded integer.

Definition at line 679 of file h264parser.cpp.

References cH264Parser::m_nCurrentBit, cH264Parser::m_nLength, cH264Parser::m_parseError, cH264Parser::ReadBit(), and cH264Parser::ReadBits().

Referenced by cH264Parser::cH264Parser(), and cH264Parser::ReadSE().

◆ ReadSE()

unsigned int cH264Parser::ReadSE ( void )

private

Read a signed exponential-golomb coded integer.

Definition at line 710 of file h264parser.cpp.

References cH264Parser::ReadExponentialGolombCode().

Referenced by cH264Parser::cH264Parser().

◆ Reset() [1/3]

void cBufferFillLevelLowPassFilter::Reset ( void )

Resets the filter state.

Definition at line 23 of file filllevel.cpp.

References cBufferFillLevelLowPassFilter::m_bufferFillLevelFramesAvg, cBufferFillLevelLowPassFilter::m_frameCounter, cBufferFillLevelLowPassFilter::m_state, and cBufferFillLevelLowPassFilter::UNINITIALIZED.

Referenced by cSoftHdAudio::DropSamplesOlderThanPtsMs(), and cSoftHdAudio::FlushBuffers().

◆ Reset() [2/3]

void cJitterTracker::Reset ( void )

Resets the jitter tracker.

Definition at line 73 of file jittertracker.cpp.

References cJitterTracker::m_firstPacket, cJitterTracker::m_lastDiffMs, cJitterTracker::m_longTermMaxJitterMs, cJitterTracker::m_packetCounter, cJitterTracker::m_secondPacket, and cJitterTracker::m_shortTermMaxJitterMs.

Referenced by cSoftHdDevice::OnEnteringState().

◆ Reset() [3/3]

void cReassemblyBuffer::Reset ( void )

Reset the reassembly buffer.

Clears all buffered data, PTS tracking, and resets codec detection state.

Definition at line 624 of file pes.cpp.

References AV_NOPTS_VALUE, cReassemblyBuffer::m_buffer, cReassemblyBuffer::m_codec, cReassemblyBuffer::m_lastPoppedPts, and cPtsTrackingBuffer::Reset().

Referenced by cSoftHdDevice::Clear(), cSoftHdDevice::FlushAudio(), cSoftHdDevice::OnEnteringState(), cSoftHdDevice::PlayAudio(), cSoftHdDevice::PlayVideoInternal(), and cSoftHdDevice::ResetPipStream().

◆ ResetFramesCounters()

void cBufferFillLevelLowPassFilter::ResetFramesCounters ( void )

Resets the received and written frames counters.

Definition at line 33 of file filllevel.cpp.

References cBufferFillLevelLowPassFilter::m_receivedFrames, and cBufferFillLevelLowPassFilter::m_writtenToAlsaFrames.

Referenced by cSoftHdAudio::FlushBuffers().

◆ ScaleRgb24()

static uint8_t * ScaleRgb24	(	uint8_t *	src,
		int *	size,
		int	srcW,
		int	srcH,
		int	dstW,
		int	dstH
	)

static

Scale an image.

Conversion is done with ffmpegs swscale

Parameters

[in]	src	pointer to the source data
[out]	size	size of the return data
[in]	srcW	source width
[in]	srcH	source height
[in]	dstW	width of the returned image
[in]	dstH	height of the returned image

Returns: a pointer to the converted image data

Definition at line 153 of file grab.cpp.

References L_GRAB, LOGDEBUG2, and LOGERROR.

Referenced by cSoftHdGrab::ProcessGrab().

◆ SetDrmBuf()

void cGrabBuffer::SetDrmBuf ( cDrmBuffer * buf )

Set the grab buffer and the dimensions how it is presented on the screen.

Definition at line 309 of file grab.cpp.

References cGrabBuffer::m_pBuf, and cGrabBuffer::m_rect.

Referenced by cVideoRender::CreateGrabBuffers().

◆ SetLogLevel()

void cSoftHdLogger::SetLogLevel ( int level )

Set the loglevel.

Parameters

level new loglevel

Definition at line 61 of file logger.cpp.

References cSoftHdLogger::m_logLevel.

◆ Start()

bool cSoftHdGrab::Start	(	bool	jpeg,
		int	quality,
		int	width,
		int	height,
		int	screenWidth,
		int	screenHeight
	)

Start a grab in the video renderer.

Parameters

jpeg	flag true, create JPEG data
quality	JPEG quality
width	width of requested grab image
height	height of requested grab image
screenWidth	current screen width
screenHeight	current screen height

Definition at line 329 of file grab.cpp.

References cVideoRender::ClearGrabBuffers(), L_GRAB, LOGDEBUG2, cSoftHdGrab::m_grabbedHeight, cSoftHdGrab::m_grabbedImage, cSoftHdGrab::m_grabbedWidth, cSoftHdGrab::m_isActive, cSoftHdGrab::m_isJpeg, cSoftHdGrab::m_pRender, cSoftHdGrab::m_quality, cSoftHdGrab::m_screenHeight, cSoftHdGrab::m_screenWidth, cSoftHdGrab::ProcessGrab(), and cVideoRender::TriggerGrab().

Referenced by cSoftHdDevice::GrabImage().

◆ StateToString()

const char * cBufferFillLevelLowPassFilter::StateToString ( State state )

private

Converts the filter state to a string representation.

Parameters

state The state to convert

Returns: String representation of the state

Definition at line 89 of file filllevel.cpp.

References cBufferFillLevelLowPassFilter::SETTLED, cBufferFillLevelLowPassFilter::SETTLING, and cBufferFillLevelLowPassFilter::UNINITIALIZED.

◆ Timestamp2String()

static const char * Timestamp2String	(	int64_t	ts,
		uint8_t	divisor
	)

inlinestatic

Nice time-stamp string.

Parameters

ts	time stamp
divisor	optional divisor for the given timestamp int (must be > 0)

Returns: nice formatted timestamp string

Definition at line 127 of file misc.h.

References AV_NOPTS_VALUE.

Referenced by cVideoRender::DisplayFrame(), cSoftHdAudio::DropSamplesOlderThanPtsMs(), cSoftHdAudio::Enqueue(), cSoftHdDevice::IsBufferingThresholdReached(), cVideoRender::LogDroppedDuped(), cVideoRender::PageFlip(), cVideoDecoder::ReceiveFrame(), and cVideoDecoder::SendPacket().

◆ TruncateBufferUntilFirstValidData()

AVCodecID cReassemblyBufferAudio::TruncateBufferUntilFirstValidData ( void )

Truncate buffer until the first valid audio frame.

Searches for two consecutive audio frames with the same sync word to validate the frame header, then erases all data before the first valid frame. This removes garbage data and synchronizes to the audio stream.

Returns: Detected codec ID, or AV_CODEC_ID_NONE if no valid frames found

Definition at line 493 of file pes.cpp.

References cPtsTrackingBuffer::Erase(), cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord(), cPtsTrackingBuffer::GetSize(), LOGDEBUG, cReassemblyBuffer::m_buffer, and cReassemblyBufferAudio::m_ptsInvalid.

Referenced by cReassemblyBufferAudio::PopAvPacket(), TEST_CASE(), TEST_CASE(), TEST_CASE(), TEST_CASE(), and TEST_CASE().

◆ UpdateAvgBufferFillLevel()

void cBufferFillLevelLowPassFilter::UpdateAvgBufferFillLevel ( int hardwareBufferFillLevelFrames )

Updates the buffer fill level average.

Calculates the current buffer fill level based on received frames, written frames, and the hardware buffer fill level. Applies a low-pass filter (exponential moving average) to smooth the value. This is necessary, because the packets coming from VDR have a few milliseconds jitter.

Handles state transitions:

UNINITIALIZED -> SETTLING: Initializes the average and sets a faster alpha.
SETTLING -> SETTLED: After a duration, switches to a slower alpha and fixes the target value.

Parameters

hardwareBufferFillLevelFrames Current fill level reported by the hardware (ALSA)

Definition at line 53 of file filllevel.cpp.

Referenced by cSoftHdAudio::ClockDriftCompensation().

Variable Documentation

◆ AudioCodecMap

const std::map<AVCodecID, CodecInfo> AudioCodecMap

static

Map of Audio Codec Information.

Key: AVCodecID Value: CodecInfo with sync word detection and frame size calculation lambdas

Definition at line 47 of file pes.cpp.

Referenced by cReassemblyBufferAudio::DetectCodecFromSyncWord(), cReassemblyBufferAudio::FindTwoConsecutiveFramesWithSameSyncWord(), cReassemblyBufferAudio::GetFrameSizeForCodec(), and cReassemblyBufferAudio::PopAvPacket().

Classes

Macros

Enumerations

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ av_err2str

◆ AV_LOGLEVEL

◆ AV_NOPTS_VALUE

◆ BLEND

◆ EGL_CHECK

◆ GL_CHECK

◆ LOGDEBUG

◆ LOGDEBUG2

◆ LOGERROR

◆ LOGFATAL

◆ LOGINFO

◆ LOGWARNING

◆ OPAQUE

◆ TRANSPARENT

◆ UNMULTIPLY

◆ VIDEO_SURFACES_MAX

Enumeration Type Documentation

◆ Grabtype

◆ LogFlags

◆ NalUnitTypes

Function Documentation

◆ AddFrameNumber()

◆ AddInvalidReference()

◆ AddValidReference()

◆ AlphaBlend()

◆ av_err2string()

◆ BlitVideo()

◆ BufToRgb()

◆ BuildInvalidReferenceString()

◆ BuildValidReferenceString()

◆ cH264Parser()

◆ ConvertEBSPtoRBSP()

◆ cPes()

◆ CreateJpeg()

◆ DetectCodecFromSyncWord()

◆ DrmFormatToAVFormat()

◆ eglCheckError()

◆ Erase()

◆ FindSyncWord()

◆ FindTwoConsecutiveFramesWithSameSyncWord()

◆ FreeDrmBuf()

◆ GetFrameSizeForCodec()

◆ GetGrab()

◆ GetLogger()

◆ GetPacketLength()

◆ GetPayload()

◆ GetPayloadSize()

◆ GetPPSOffset()

◆ GetPts() [1/2]

◆ GetPts() [2/2]

◆ GetSliceOffset()

◆ GetSPSOffset()

◆ glCheckError()

◆ GrabtypeToString()

◆ HasLeadingZero()

◆ HasPts()

◆ Init()

◆ IsHeaderValid()

◆ isInterlacedFrame()

◆ IsValid()

◆ isValidStartCode()

◆ LogDebug()

◆ LogDebug2()

◆ LogError()

◆ LogFatal()

◆ LogFFmpeg()

◆ LogFFmpegCallback()

◆ LogInfo()

◆ LogWarning()

◆ NalUnitType()

◆ PacketReceived()

◆ ParseCodecHeader()

◆ PopAvPacket() [1/2]