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# Authors: Denis Engemann <denis.engemann@gmail.com?>
#
# License: BSD (3-clause)
from ..constants import Bunch
BTI = Bunch()
BTI.ELEC_STATE_NOT_COLLECTED = 0
BTI.ELEC_STATE_COLLECTED = 1
BTI.ELEC_STATE_SKIPPED = 2
BTI.ELEC_STATE_NOT_APPLICABLE = 3
#
## Byte offesets and data sizes for different files
#
BTI.FILE_MASK = 2147483647
BTI.FILE_CURPOS = 8
BTI.FILE_END = -8
BTI.FILE_HS_VERSION = 0
BTI.FILE_HS_TIMESTAMP = 4
BTI.FILE_HS_CHECKSUM = 8
BTI.FILE_HS_N_DIGPOINTS = 12
BTI.FILE_HS_N_INDEXPOINTS = 16
BTI.FILE_PDF_H_ENTER = 1
BTI.FILE_PDF_H_FTYPE = 5
BTI.FILE_PDF_H_XLABEL = 16
BTI.FILE_PDF_H_NEXT = 2
BTI.FILE_PDF_H_EXIT = 20
BTI.FILE_PDF_EPOCH_EXIT = 28
BTI.FILE_PDF_CH_NEXT = 6
BTI.FILE_PDF_CH_LABELSIZE = 16
BTI.FILE_PDF_CH_YLABEL = 16
BTI.FILE_PDF_CH_OFF_FLAG = 16
BTI.FILE_PDF_CH_EXIT = 12
BTI.FILE_PDF_EVENT_NAME = 16
BTI.FILE_PDF_EVENT_EXIT = 32
BTI.FILE_PDF_PROCESS_BLOCKTYPE = 20
BTI.FILE_PDF_PROCESS_USER = 32
BTI.FILE_PDF_PROCESS_FNAME = 256
BTI.FILE_PDF_PROCESS_EXIT = 32
BTI.FILE_PDF_ASSOC_NEXT = 32
BTI.FILE_PDFED_NAME = 17
BTI.FILE_PDFED_NEXT = 9
BTI.FILE_PDFED_EXIT = 8
#
## General data constants
#
BTI.DATA_N_IDX_POINTS = 5
BTI.DATA_ROT_N_ROW = 3
BTI.DATA_ROT_N_COL = 3
BTI.DATA_XFM_N_COL = 4
BTI.DATA_XFM_N_ROW = 4
BTI.FIFF_LOGNO = 111
#
## Channel Types
#
BTI.CHTYPE_MEG = 1
BTI.CHTYPE_EEG = 2
BTI.CHTYPE_REFERENCE = 3
BTI.CHTYPE_EXTERNAL = 4
BTI.CHTYPE_TRIGGER = 5
BTI.CHTYPE_UTILITY = 6
BTI.CHTYPE_DERIVED = 7
BTI.CHTYPE_SHORTED = 8
#
## Processes
#
BTI.PROC_DEFAULTS = 'BTi_defaults'
BTI.PROC_FILTER = 'b_filt_hp,b_filt_lp,b_filt_notch'
BTI.PROC_BPFILTER = 'b_filt_b_pass,b_filt_b_reject'
#
## User blocks
#
BTI.UB_B_MAG_INFO = 'B_Mag_Info'
BTI.UB_B_COH_POINTS = 'B_COH_Points'
BTI.UB_B_CCP_XFM_BLOCK = 'b_ccp_xfm_block'
BTI.UB_B_EEG_LOCS = 'b_eeg_elec_locs'
BTI.UB_B_WHC_CHAN_MAP_VER = 'B_WHChanMapVer'
BTI.UB_B_WHC_CHAN_MAP = 'B_WHChanMap'
BTI.UB_B_WHS_SUBSYS_VER = 'B_WHSubsysVer' # B_WHSubsysVer
BTI.UB_B_WHS_SUBSYS = 'B_WHSubsys'
BTI.UB_B_CH_LABELS = 'B_ch_labels'
BTI.UB_B_CALIBRATION = 'B_Calibration'
BTI.UB_B_SYS_CONFIG_TIME = 'B_SysConfigTime'
BTI.UB_B_DELTA_ENABLED = 'B_DELTA_ENABLED'
BTI.UB_B_E_TABLE_USED = 'B_E_table_used'
BTI.UB_B_E_TABLE = 'B_E_TABLE'
BTI.UB_B_WEIGHTS_USED = 'B_weights_used'
BTI.UB_B_TRIG_MASK = 'B_trig_mask'
BTI.UB_B_WEIGHT_TABLE = 'BWT_'
#
## transforms
#
BTI.T_ROT_VV = ((0, -1, 0, 0), (1, 0, 0, 0), (0, 0, 1, 0), (1, 1, 1, 1))
BTI.T_IDENT = ((1, 0, 0, 0), (0, 1, 0, 0), (0, 0, 1, 0), (1, 1, 1, 1))
BTI.T_ROT_IX = slice(0, 3), slice(0, 3)
BTI.T_TRANS_IX = slice(0, 3), slice(3, 4)
BTI.T_SCA_IX = slice(3, 4), slice(0, 4)
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