Input to the Library from Disk Storage

The fax library accepts TIFF/F files that have valid tag values as shown in the following table, where x equals a number.

NOTE:

An asterisk (*) after a TIFF/F tag field name indicates a subset of the TIFF/F tags; see the fx_setparm( ) FC_TFTAGCHECK parameter.

Except for PageNumber, all tags listed are mandatory. All tags listed are checked by default. If the PageNumber tag is absent, the fax library assumes there is only one page in a single page file. Page numbers can be zero base or one base. Note that zero-based page numbering adheres to the TIFF/F standard.

Table 22. TIFF/F Tags Input to Library

Field	Valid Values	Description
BitsPerSample	1	one bit per sample
Compression*	3	Group 3 - MH or MR encoding
	4	Group 4 - MMR encoding
FillOrder*	1	most significant bit first
	2	least significant bit first
ImageWidth*	1728	number of pixels per line
	2048	number of pixels per line
	2432	number of pixels per line
PageNumber	x/x	page number/number of pages
SamplesPerPixel	1	one sample per pixel
StripByteCounts*	x	byte count in image (as appropriate)
StripOffsets*	x	byte offset of image (as appropriate)
T4Options	x/x	Group 3 - MH encoding, EOL not padded/padded
T6Options	x	Group 4 - MMR encoding
Yresolution*	<= 150	coarse (normal)
	>150	fine

If T4Options or T6Options tag is absent, the following values are assumed:

Field	Valid Values	Description
T4Options	0	Group 3 - MH encoding, EOL not padded
	4	Group 3 - MH encoding, EOL padded
T6Options	0	Group 4 - MMR encoding

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