hds::SEGY Class Reference

Public Types
enum	Format {   UNDEFINED = 0, IBM = 1, Int4 = 2, Int2 = 3,   IEEE = 5 }
enum	TraceHeaderKey {   THK_NTR = 0, THK_NSP, THK_NRP, THK_NDP,   THK_L, THK_NS, THK_DT, THK_MUTS,   THK_MUTE }

Public Member Functions
	SEGY (QIODevice *segy_io_dev=0x0)
	~SEGY ()
bool	nextTrace (std::vector< float > &samples, std::vector< int > &header)
void	reset ()
int	samplesNum () const
float	dtVal () const
Format	format () const
qint64	ioDeviceSize () const
qint64	ioDevicePos () const

Static Public Member Functions
static int	getTrHdrVal (TraceHeaderKey key, const std::vector< int > &header)
static QString	formatStr (Format fmt)

Protected Member Functions
bool	load_current_line_headers ()

Protected Attributes
QIODevice *	m_psegy_io_dev
std::vector< char >	m_current_line_text_hdr
std::vector< char >	m_current_line_bin_hdr
bool	m_cur_line_hdrs_loaded

Member Enumeration Documentation

enum hds::SEGY::Format

Format of SEG-Y file.

enum hds::SEGY::TraceHeaderKey

Key of trace header.

Enumerator
THK_NTR	Logical number of the trace.
THK_NDP	CDP ensamble number.
THK_NS	Number of samples.
THK_DT	Sample interval (mks).
THK_MUTS	Start mute time (ms).
THK_MUTE	End mute time (ms).

Constructor & Destructor Documentation

hds::SEGY::SEGY

(

QIODevice *

segy_io_dev = 0x0

)

Default constructor.

hds::SEGY::~SEGY

(

)

Destructor. Get next trace from line sequence, return false if no more traces.

Member Function Documentation

float hds::SEGY::dtVal

(

)

const

Get dt(ms) sampling from binary line header.

Return value < 0 on error.

Format hds::SEGY::format

(

)

const

Return format of SEG-Y. UNDEFINED on error.

static QString hds::SEGY::formatStr ( Format  fmt )

static

Make format string form format type.

static int hds::SEGY::getTrHdrVal ( TraceHeaderKey  key, const std::vector< int > &  header  )

static

Get value from trace header with provided key.

qint64 hds::SEGY::ioDevicePos

(

)

const

Get position on IO device of SEG-Y file (useful for progress).

qint64 hds::SEGY::ioDeviceSize

(

)

const

Get size of IO device of SEG-Y file (useful for progress).

bool hds::SEGY::load_current_line_headers ( )

protected

Load headers for current line.

void hds::SEGY::reset

(

)

Set pointer to the first trace.

int hds::SEGY::samplesNum

(

)

const

Get number of samples from binary line header. 

Return -1 on error.

Member Data Documentation

std::vector<char> hds::SEGY::m_current_line_bin_hdr

protected

Current line headers loaded flag.

std::vector<char> hds::SEGY::m_current_line_text_hdr

protected

Binary header for current line.

QIODevice* hds::SEGY::m_psegy_io_dev

protected

< I/O device for SEGY data access. Text header for current line.

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

• /net/opt/univers/ubp-i-15.3-centos7-x64.urij/include/hds_formats/hds_segy.hpp