How to use the construct.SLInt32 function in construct
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PIC-IRIS / PH5 / ph5 / core / sac_h.py View on Github 
construct.SLInt32("nzhour"), # GMT hour.
construct.SLInt32("nzmin"), # GMT minute.
construct.SLInt32("nzsec"), # GMT second.
construct.SLInt32("nzmsec"), # GMT millisecond.
# Header version number. Current value is the
# integer 6.
construct.SLInt32("nvhdr"),
# Older version data (NVHDR < 6) are automatically
# updated
construct.SLInt32("norid"), # Origin ID (CSS 3.0)
construct.SLInt32("nevid"), # Event ID (CSS 3.0)
# Number of points per data component. [required]
construct.SLInt32("npts"),
construct.SLInt32("nsnpts"), #
construct.SLInt32("nwfid"), # Waveform ID (CSS 3.0)
construct.SLInt32("nxsize"), #
construct.SLInt32("nysize"), #
construct.SLInt32("unused15"), #
# Type of file [required]:
construct.SLInt32("iftype"),
# * ITIME {Time series file}
# * IRLIM {Spectral file---real and imaginary}
# * IAMPH {Spectral file---amplitude and phase}
# * IXY {General x versus y data}
# * IXYZ {General XYZ (3-D) file}
# Type of dependent variable:
construct.SLInt32("idep"),
# * IUNKN (Unknown)
# * IDISP (Displacement in nm)
# * IVEL (Velocity in nm/sec)
# * IVOLTS (Velocity in volts)
# * IACC (Acceleration in nm/sec/sec)"""
import struct
import construct as cons
class FrameAdapter(cons.Adapter):
def _decode(self, obj, context):
return Frame(context['_']['slp_file'], obj)
FRAME = cons.Struct('frames',
cons.ULInt32('cmd_table_offset'),
cons.ULInt32('outline_table_offset'),
cons.ULInt32('palette_offset'),
cons.ULInt32('properties'),
cons.SLInt32('width'),
cons.SLInt32('height'),
cons.SLInt32('hotspot_x'),
cons.SLInt32('hotspot_y'),
)
HEADER = cons.Struct('header',
cons.String('version', 4),
cons.ULInt32('num_frames'),
cons.String('comment', 24),
cons.Array(lambda ctx: ctx['num_frames'], FrameAdapter(FRAME)),
)
class ImageAdapter(object):
"""
A generic image writer. Could be used with PIL, cairo, ...
"""# * IEX (Other explosion)
# * INU (Nuclear explosion)
# * INC (Nuclear cavity collapse)
# * IO\_ (Other source of known origin)
# * IR (Regional event of unknown origin)
# * IT (Teleseismic event of unknown origin)
# * IU (Undetermined or conflicting information)
# Quality of data [not currently used]:
construct.SLInt32("iqual"),
# * IGOOD (Good data)
# * IGLCH (Glitches)
# * IDROP (Dropouts)
# * ILOWSN (Low signal to noise ratio)
# * IOTHER (Other)
# Synthetic data flag [not currently used]:
construct.SLInt32("isynth"),
# * IRLDTA (Real data)
# * ?????
# (Flags for various synthetic seismogram
# codes)
construct.SLInt32("imagtyp"), #
construct.SLInt32("imagsrc"), #
construct.SLInt32("unused19"), #
construct.SLInt32("unused20"), #
construct.SLInt32("unused21"), #
construct.SLInt32("unused22"), #
construct.SLInt32("unused23"), #
construct.SLInt32("unused24"), #
construct.SLInt32("unused25"), #
construct.SLInt32("unused26"), #
# TRUE if data is evenly spaced. [required]
construct.SLInt32("leven"),construct.SLInt32("sourceSurfaceElevation"),
construct.SLInt32("sourceDepth"), # Source depth
# Elevation at receiver group
construct.SLInt32("datumElevRec"),
# Source elevation
construct.SLInt32("datumElevSource"),
# Water depth at source
construct.SLInt32("sourceWaterDepth"),
# Water depth at group
construct.SLInt32("recWaterDepth"),
# Elevation and depth scalar
construct.SLInt16("elevationScale"),
# Coordinate scalar
construct.SLInt16("coordScale"),
# X coordinate of source
construct.SLInt32("sourceLongOrX"),
# Y coordinate of source
construct.SLInt32("sourceLatOrY"),
# X coordinate of receiver group
construct.SLInt32("recLongOrX"),
# Y coordinate of receiver group
construct.SLInt32("recLatOrY"),
# Coordinate system
construct.SLInt16("coordUnits"),
# Weathering velocity
construct.SLInt16("weatheringVelocity"),
# Sub-weathering velocity
construct.SLInt16("subWeatheringVelocity"),
# Uphole time at source in ms
construct.SLInt16("sourceUpholeTime"),
# Uphole time at group in ms
construct.SLInt16("recUpholeTime"),# * IRLDTA (Real data)
# * ?????
# (Flags for various synthetic seismogram
# codes)
construct.SLInt32("imagtyp"), #
construct.SLInt32("imagsrc"), #
construct.SLInt32("unused19"), #
construct.SLInt32("unused20"), #
construct.SLInt32("unused21"), #
construct.SLInt32("unused22"), #
construct.SLInt32("unused23"), #
construct.SLInt32("unused24"), #
construct.SLInt32("unused25"), #
construct.SLInt32("unused26"), #
# TRUE if data is evenly spaced. [required]
construct.SLInt32("leven"),
# TRUE if station components have a positive
# polarity
construct.SLInt32("lpspol"),
# (left-hand rule).
# TRUE if it is okay to overwrite this file on disk.
construct.SLInt32("lovrok"),
# TRUE if DIST AZ BAZ and GCARC are to be calculated
# from
construct.SLInt32("lcalda"),
# st event coordinates.
construct.SLInt32("unused27"))
return BIN
# SAC Little Endian binary header, string partdef seg_header_le():
TRACE = construct.Struct("TRACE",
# X coordinate of ensemble
construct.SLInt32("Xcoor"),
# Y coordinate of ensemble
construct.SLInt32("Ycoor"),
# Same as lino in reel header
construct.SLInt32("Inn"),
construct.SLInt32("Cnn"), # Same as cdp
construct.SLInt32("Spn"), # Shot point number
# Scaler to apply to Spn
construct.SLInt16("Scal"),
# Trace value measurement units
construct.SLInt16("Tvmu"),
# Transduction constant mantissa
construct.SLInt32("Tucmant"),
# Transduction constant exponent
construct.SLInt16("Tucexp"),
construct.SLInt16("Tdu"), # Transduction units
# Device/Trace identifier
construct.SLInt16("Dti"),
construct.SLInt16("Tscaler"), # Time scalar
# Source Type/Orientation
construct.SLInt16("Sto"),
# Source Energy direction
construct.String("Sed", 6),
# Source measurement mantissa
construct.SLInt32("Smsmant"),
# Source measurement exponent
construct.SLInt16("Smsexp"),
# Source measurement Units
construct.SLInt16("Smu"),def seg_header_le():
TRACE = construct.Struct("TRACE",
# X coordinate of ensemble
construct.SLInt32("Xcoor"),
# Y coordinate of ensemble
construct.SLInt32("Ycoor"),
# Same as lino in reel header
construct.SLInt32("Inn"),
construct.SLInt32("Cnn"), # Same as cdp
construct.SLInt32("Spn"), # Shot point number
# Scaler to apply to Spn
construct.SLInt16("Scal"),
# Trace value measurement units
construct.SLInt16("Tvmu"),
# Transduction constant mantissa
construct.SLInt32("Tucmant"),
# Transduction constant exponent
construct.SLInt16("Tucexp"),
construct.SLInt16("Tdu"), # Transduction units
# Device/Trace identifier
construct.SLInt16("Dti"),
construct.SLInt16("Tscaler"), # Time scalar
# Source Type/Orientation
construct.SLInt16("Sto"),
# Source Energy direction
construct.String("Sed", 6),# Number of points per data component. [required]
construct.SLInt32("npts"),
construct.SLInt32("nsnpts"), #
construct.SLInt32("nwfid"), # Waveform ID (CSS 3.0)
construct.SLInt32("nxsize"), #
construct.SLInt32("nysize"), #
construct.SLInt32("unused15"), #
# Type of file [required]:
construct.SLInt32("iftype"),
# * ITIME {Time series file}
# * IRLIM {Spectral file---real and imaginary}
# * IAMPH {Spectral file---amplitude and phase}
# * IXY {General x versus y data}
# * IXYZ {General XYZ (3-D) file}
# Type of dependent variable:
construct.SLInt32("idep"),
# * IUNKN (Unknown)
# * IDISP (Displacement in nm)
# * IVEL (Velocity in nm/sec)
# * IVOLTS (Velocity in volts)
# * IACC (Acceleration in nm/sec/sec)
# Reference time equivalence:
construct.SLInt32("iztype"),
# * IUNKN (5): Unknown
# * IB (9): Begin time
# * IDAY (10): Midnight of refernece GMT day
# * IO (11): Event origin time
# * IA (12): First arrival time
# * ITn (13-22): User defined time pick n,n=0,9
construct.SLInt32("unused16"), #
# Type of recording instrument. [currently not used]
construct.SLInt32("iinst"),# * IDROP (Dropouts)
# * ILOWSN (Low signal to noise ratio)
# * IOTHER (Other)
# Synthetic data flag [not currently used]:
construct.SLInt32("isynth"),
# * IRLDTA (Real data)
# * ?????
# (Flags for various synthetic seismogram
# codes)
construct.SLInt32("imagtyp"), #
construct.SLInt32("imagsrc"), #
construct.SLInt32("unused19"), #
construct.SLInt32("unused20"), #
construct.SLInt32("unused21"), #
construct.SLInt32("unused22"), #
construct.SLInt32("unused23"), #
construct.SLInt32("unused24"), #
construct.SLInt32("unused25"), #
construct.SLInt32("unused26"), #
# TRUE if data is evenly spaced. [required]
construct.SLInt32("leven"),
# TRUE if station components have a positive
# polarity
construct.SLInt32("lpspol"),
# (left-hand rule).
# TRUE if it is okay to overwrite this file on disk.
construct.SLInt32("lovrok"),
# TRUE if DIST AZ BAZ and GCARC are to be calculated
# from
construct.SLInt32("lcalda"),
# st event coordinates.
construct.SLInt32("unused27"))def bin_header_le_int():
BIN = construct.Struct("BIN",
# GMT year corresponding to reference (zero) time in
# file.
construct.SLInt32("nzyear"),
construct.SLInt32("nzjday"), # GMT julian day.
construct.SLInt32("nzhour"), # GMT hour.
construct.SLInt32("nzmin"), # GMT minute.
construct.SLInt32("nzsec"), # GMT second.
construct.SLInt32("nzmsec"), # GMT millisecond.
# Header version number. Current value is the
# integer 6.
construct.SLInt32("nvhdr"),
# Older version data (NVHDR < 6) are automatically
# updated
construct.SLInt32("norid"), # Origin ID (CSS 3.0)
construct.SLInt32("nevid"), # Event ID (CSS 3.0)
# Number of points per data component. [required]
construct.SLInt32("npts"),
construct.SLInt32("nsnpts"), #
construct.SLInt32("nwfid"), # Waveform ID (CSS 3.0)
construct.SLInt32("nxsize"), #
construct.SLInt32("nysize"), #
construct.SLInt32("unused15"), #construct
A powerful declarative symmetric parser/builder for binary data
Package Health Score
83 / 100Popular construct functions
- construct.Array
- construct.BFloat32
- construct.BitField
- construct.Bytes
- construct.Const
- construct.Container
- construct.Enum
- construct.Flag
- construct.LFloat32
- construct.SBInt16
- construct.SBInt32
- construct.SLInt16
- construct.SLInt32
- construct.String
- construct.Struct
- construct.UBInt16
- construct.UBInt32
- construct.UBInt8
- construct.ULInt16
- construct.ULInt32