From 22f703cab05b7cd368f4de9e03991b7664dc5022 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Mon, 1 Sep 2014 13:56:46 +0200 Subject: Initial import of argyll version 1.5.1-8 --- tiff/html/man/libtiff.3tiff.html | 3137 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 3137 insertions(+) create mode 100644 tiff/html/man/libtiff.3tiff.html (limited to 'tiff/html/man/libtiff.3tiff.html') diff --git a/tiff/html/man/libtiff.3tiff.html b/tiff/html/man/libtiff.3tiff.html new file mode 100644 index 0000000..bea73f7 --- /dev/null +++ b/tiff/html/man/libtiff.3tiff.html @@ -0,0 +1,3137 @@ + + + + + + +INTRO + + + +

INTRO

+NAME
+SYNOPSIS
+DESCRIPTION
+DATA TYPES
+LIST OF ROUTINES
+TAG USAGE
+PSEUDO TAGS
+DIAGNOSTICS
+SEE ALSO
+BUGS
+ +

+ +

NAME

+ + + + + +

libtiff − introduction to libtiff, a +library for reading and writing TIFF +files

+ +

SYNOPSIS

+ + + + + +

#include <tiffio.h>

+ +

cc file.c -ltiff

+ +

DESCRIPTION

+ + + + + +

libtiff is a library for reading and writing +data files encoded with the Tag Image File format, +Revision 6.0 (or revision 5.0 or revision 4.0). This file +format is suitable for archiving multi-color and +monochromatic image data.

+ +

The library supports several compression algorithms, +as indicated by the Compression field, including: no +compression (1), CCITT 1D Huffman compression +(2), CCITT Group 3 Facsimile compression +(3), CCITT Group 4 Facsimile compression (4), +Lempel-Ziv & Welch compression (5), baseline JPEG +compression (7), word-aligned 1D Huffman compression +(32771), and PackBits compression (32773). In addition, +several nonstandard compression algorithms are supported: +the 4-bit compression algorithm used by the +ThunderScan program (32809) (decompression only), +NeXT’s 2-bit compression algorithm (32766) +(decompression only), an experimental LZ-style algorithm +known as Deflate (32946), and an experimental CIE LogLuv +compression scheme designed for images with high dynamic +range (32845 for LogL and 32845 for LogLuv). Directory +information may be in either little- or big-endian byte +order−byte swapping is automatically done by the +library. Data bit ordering may be either Most Significant +Bit ( MSB ) to Least Significant Bit ( LSB +) or LSB to MSB. Finally, the +library does not support files in which the +BitsPerSample, Compression, +MinSampleValue, or MaxSampleValue fields are +defined differently on a per-sample basis (in Rev. 6.0 the +Compression tag is not defined on a per-sample basis, +so this is immaterial).

+ +

DATA TYPES

+ + + + + +

The library makes extensive use of C typedefs to +promote portability. Two sets of typedefs are used, one for +communication with clients of the library and one for +internal data structures and parsing of the TIFF +format. The following typedefs are exposed to users +either through function definitions or through parameters +passed through the varargs interfaces.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

	+ + typedef unsigned short uint16; +	+ + 16-bit unsigned integer +
	+ + typedef unsigned <thing> +uint32; +	+ + 32-bit unsigned integer +
	+ + typedef unsigned int ttag_t; +	+ + directory tag +
	+ + typedef uint16 tdir_t; +	+ + directory index +
	+ + typedef uint16 tsample_t; +	+ + sample number +
	+ + typedef uint32 tstrip_t; +	+ + strip number +
	+ + typedef uint32 ttile_t; +	+ + tile number +
	+ + typedef int32 tsize_t; +	+ + i/o size in bytes +
	+ + typedef void* tdata_t; +	+ + image data ref +
	+ + typedef void* thandle_t; +	+ + client data handle +
	+ + typedef int32 toff_t; +	+ + file offset +

+ + + + + +

Note that tstrip_t, ttile_t, and +tsize_t are constrained to be no more than 32-bit +quantities by 32-bit fields they are stored in in the +TIFF image. Likewise tsample_t is limited by the +16-bit field used to store the SamplesPerPixel tag. +tdir_t constrains the maximum number of IFDs +that may appear in an image and may be an arbitrary +size (w/o penalty). ttag_t must be either int, +unsigned int, pointer, or double because the library uses a +varargs interface and ANSI C restricts the type +of the parameter before an ellipsis to be a promoted type. +toff_t is defined as int32 because TIFF file offsets +are (unsigned) 32-bit quantities. A signed value is used +because some interfaces return −1 on error. Finally, +note that user-specified data references are passed as +opaque handles and only cast at the lowest layers where +their type is presumed.

+ +

LIST OF ROUTINES

+ + + + + +

The following routines are part of the library. +Consult specific manual pages for details on their +operation; on most systems doing ‘‘man +function-name’’ will work.

+ + +

Name Description

	+ + TIFFCheckpointDirectory +	+ + writes the current state of the directory +
	+ + TIFFCheckTile +	+ + very x,y,z,sample is within image +
	+ + TIFFCIELabToRGBInit +	+ + initialize CIE Lab* 1976 to RGB conversion +state +
	+ + TIFFCIELabToXYZ +	+ + perform CIE Lab* 1976 to CIE XYZ +conversion +
	+ + TIFFClientOpen +	+ + open a file for reading or writing +
	+ + TIFFClose +	+ + close an open file +
	+ + TIFFComputeStrip +	+ + return strip containing y,sample +
	+ + TIFFComputeTile +	+ + return tile containing x,y,z,sample +
	+ + TIFFCurrentDirectory +	+ + return index of current directory +
	+ + TIFFCurrentRow +	+ + return index of current scanline +
	+ + TIFFCurrentStrip +	+ + return index of current strip +
	+ + TIFFCurrentTile +	+ + return index of current tile +
	+ + TIFFDataWidth +	+ + return the size of TIFF data types +
	+ + TIFFError +	+ + library error handler +
	+ + TIFFFdOpen +	+ + open a file for reading or writing +
	+ + TIFFFileName +	+ + return name of open file +
	+ + TIFFFileno +	+ + return open file descriptor +
	+ + TIFFFindCODEC +	+ + find standard codec for the specific +scheme +
	+ + TIFFFlush +	+ + flush all pending writes +
	+ + TIFFFlushData +	+ + flush pending data writes +
	+ + TIFFGetBitRevTable +	+ + return bit reversal table +
	+ + TIFFGetField +	+ + return tag value in current directory +
	+ + TIFFGetFieldDefaulted +	+ + return tag value in current directory +
	+ + TIFFGetMode +	+ + return open file mode +
	+ + TIFFGetVersion +	+ + return library version string +
	+ + TIFFIsCODECConfigured +	+ + check, whether we have working codec +
	+ + TIFFIsMSB2LSB +	+ + return true if image data is being +returned +
		+ + with bit 0 as the most significant bit +
	+ + TIFFIsTiled +	+ + return true if image data is tiled +
	+ + TIFFIsByteSwapped +	+ + return true if image data is byte-swapped +
	+ + TIFFNumberOfStrips +	+ + return number of strips in an image +
	+ + TIFFNumberOfTiles +	+ + return number of tiles in an image +
	+ + TIFFOpen +	+ + open a file for reading or writing +
	+ + TIFFPrintDirectory +	+ + print description of the current +directory +
	+ + TIFFReadBufferSetup +	+ + specify i/o buffer for reading +
	+ + TIFFReadDirectory +	+ + read the next directory +
	+ + TIFFReadEncodedStrip +	+ + read and decode a strip of data +
	+ + TIFFReadEncodedTile +	+ + read and decode a tile of data +
	+ + TIFFReadRawStrip +	+ + read a raw strip of data +
	+ + TIFFReadRawTile +	+ + read a raw tile of data +
	+ + TIFFReadRGBAImage +	+ + read an image into a fixed format raster +
	+ + TIFFReadScanline +	+ + read and decode a row of data +
	+ + TIFFReadTile +	+ + read and decode a tile of data +
	+ + TIFFRegisterCODEC +	+ + override standard codec for the specific +scheme +
	+ + TIFFReverseBits +	+ + reverse bits in an array of bytes +
	+ + TIFFRGBAImageBegin +	+ + setup decoder state for TIFFRGBAImageGet +
	+ + TIFFRGBAImageEnd +	+ + release TIFFRGBAImage decoder state +
	+ + TIFFRGBAImageGet +	+ + read and decode an image +
	+ + TIFFRGBAImageOK +	+ + is image readable by TIFFRGBAImageGet +
	+ + TIFFScanlineSize +	+ + return size of a scanline +
	+ + TIFFSetDirectory +	+ + set the current directory +
	+ + TIFFSetSubDirectory +	+ + set the current directory +
	+ + TIFFSetErrorHandler +	+ + set error handler function +
	+ + TIFFSetField +	+ + set a tag’s value in the current +directory +
	+ + TIFFSetWarningHandler +	+ + set warning handler function +
	+ + TIFFStripSize +	+ + returns size of a strip +
	+ + TIFFRawStripSize +	+ + returns the number of bytes in a raw +strip +
	+ + TIFFSwabShort +	+ + swap bytes of short +
	+ + TIFFSwabLong +	+ + swap bytes of long +
	+ + TIFFSwabArrayOfShort +	+ + swap bytes of an array of shorts +
	+ + TIFFSwabArrayOfLong +	+ + swap bytes of an array of longs +
	+ + TIFFTileRowSize +	+ + return size of a row in a tile +
	+ + TIFFTileSize +	+ + return size of a tile +
	+ + TIFFUnRegisterCODEC +	+ + unregisters the codec +
	+ + TIFFVGetField +	+ + return tag value in current directory +
	+ + TIFFVGetFieldDefaulted +	+ + return tag value in current directory +
	+ + TIFFVSetField +	+ + set a tag’s value in the current +directory +
	+ + TIFFVStripSize +	+ + returns the number of bytes in a strip +
	+ + TIFFWarning +	+ + library warning handler +
	+ + TIFFWriteDirectory +	+ + write the current directory +
	+ + TIFFWriteEncodedStrip +	+ + compress and write a strip of data +
	+ + TIFFWriteEncodedTile +	+ + compress and write a tile of data +
	+ + TIFFWriteRawStrip +	+ + write a raw strip of data +
	+ + TIFFWriteRawTile +	+ + write a raw tile of data +
	+ + TIFFWriteScanline +	+ + write a scanline of data +
	+ + TIFFWriteTile +	+ + compress and write a tile of data +
	+ + TIFFXYZToRGB +	+ + perform CIE XYZ to RGB conversion +
	+ + TIFFYCbCrToRGBInit +	+ + initialize YCbCr to RGB conversion state +
	+ + TIFFYCbCrtoRGB +	+ + perform YCbCr to RGB conversion +

+ + + + + +

Auxiliary functions:

+ + + + + + + + + + + + + + + + + + + + + + + + + + +

	+ + _TIFFfree +	+ + free memory buffer +
	+ + _TIFFmalloc +	+ + dynamically allocate memory buffer +
	+ + _TIFFmemcmp +	+ + compare contents of the memory buffers +
	+ + _TIFFmemcpy +	+ + copy contents of the one buffer to +another +
	+ + _TIFFmemset +	+ + fill memory buffer with a constant byte +
	+ + _TIFFrealloc +	+ + dynamically reallocate memory buffer +

+ +

TAG USAGE

+ + + + + +

The table below lists the TIFF tags that +are recognized and handled by the library. If no use is +indicated in the table, then the library reads and writes +the tag, but does not use it internally. Note that some tags +are meaningful only when a particular compression scheme is +being used; e.g. Group3Options is only useful if +Compression is set to CCITT Group 3 +encoding. Tags of this sort are considered +codec-specific tags and the library does not +recognize them except when the Compression tag has +been previously set to the relevant compression +scheme.

+ +

Tag Name                Value  R/W  Library Use/Notes
+

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

+ + Artist +	+ + 315 +	+ + R/W +
+ + BadFaxLines +	+ + 326 +	+ + R/W +
+ + BitsPerSample +	+ + 258 +	+ + R/W +
		+ + lots +
+ + CellLength +	+ + 265 +	+
		+ + parsed but ignored +
+ + CellWidth +	+ + 264 +	+
		+ + parsed but ignored +
+ + CleanFaxData +	+ + 327 +	+ + R/W +
+ + ColorMap +	+ + 320 +	+ + R/W +
+ + ColorResponseUnit +	+ + 300 +	+
		+ + parsed but ignored +
+ + Compression +	+ + 259 +	+ + R/W +
		+ + choosing codec +
+ + ConsecutiveBadFaxLines +	+ + 328 +	+ + R/W +

+ + + + + +

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

+ + DataType +	+ + 32996 +	+ + R +
		+ + obsoleted by SampleFormat tag +
+ + DateTime +	+ + 306 +	+ + R/W +
+ + DocumentName +	+ + 269 +	+ + R/W +
+ + DotRange +	+ + 336 +	+ + R/W +
+ + ExtraSamples +	+ + 338 +	+ + R/W +
		+ + lots +
+ + FaxRecvParams +	+ + 34908 +	+ + R/W +
+ + FaxSubAddress +	+ + 34909 +	+ + R/W +
+ + FaxRecvTime +	+ + 34910 +	+ + R/W +
+ + FillOrder +	+ + 266 +	+ + R/W +
		+ + control bit order +
+ + FreeByteCounts +	+ + 289 +	+
		+ + parsed but ignored +
+ + FreeOffsets +	+ + 288 +	+
		+ + parsed but ignored +
+ + GrayResponseCurve +	+ + 291 +	+
		+ + parsed but ignored +
+ + GrayResponseUnit +	+ + 290 +	+
		+ + parsed but ignored +
+ + Group3Options +	+ + 292 +	+ + R/W +
		+ + used by Group 3 codec +
+ + Group4Options +	+ + 293 +	+ + R/W +
+ + HostComputer +	+ + 316 +	+ + R/W +
+ + ImageDepth +	+ + 32997 +	+ + R/W +
		+ + tile/strip calculations +
+ + ImageDescription +	+ + 270 +	+ + R/W +
+ + ImageLength +	+ + 257 +	+ + R/W +
		+ + lots +
+ + ImageWidth +	+ + 256 +	+ + R/W +
		+ + lots +
+ + InkNames +	+ + 333 +	+ + R/W +
+ + InkSet +	+ + 332 +	+ + R/W +
+ + JPEGTables +	+ + 347 +	+ + R/W +
		+ + used by JPEG codec +
+ + Make +	+ + 271 +	+ + R/W +
+ + Matteing +	+ + 32995 +	+ + R +
		+ + obsoleted by ExtraSamples tag +
+ + MaxSampleValue +	+ + 281 +	+ + R/W +
+ + MinSampleValue +	+ + 280 +	+ + R/W +
+ + Model +	+ + 272 +	+ + R/W +
+ + NewSubFileType +	+ + 254 +	+ + R/W +
		+ + called SubFileType in spec +
+ + NumberOfInks +	+ + 334 +	+ + R/W +
+ + Orientation +	+ + 274 +	+ + R/W +
+ + PageName +	+ + 285 +	+ + R/W +
+ + PageNumber +	+ + 297 +	+ + R/W +
+ + PhotometricInterpretation +		+ + 262 +
		+ + R/Wused by Group 3 and JPEG codecs +
+ + PlanarConfiguration +	+ + 284 +	+ + R/W +
		+ + data i/o +
+ + Predictor +	+ + 317 +	+ + R/W +
		+ + used by LZW and Deflate codecs +
+ + PrimaryChromacities +	+ + 319 +	+ + R/W +
+ + ReferenceBlackWhite +	+ + 532 +	+ + R/W +
+ + ResolutionUnit +	+ + 296 +	+ + R/W +
		+ + used by Group 3 codec +
+ + RowsPerStrip +	+ + 278 +	+ + R/W +
		+ + data i/o +
+ + SampleFormat +	+ + 339 +	+ + R/W +
+ + SamplesPerPixel +	+ + 277 +	+ + R/W +
		+ + lots +
+ + SMinSampleValue +	+ + 340 +	+ + R/W +
+ + SMaxSampleValue +	+ + 341 +	+ + R/W +
+ + Software +	+ + 305 +	+ + R/W +
+ + StoNits +	+ + 37439 +	+ + R/W +
+ + StripByteCounts +	+ + 279 +	+ + R/W +
		+ + data i/o +
+ + StripOffsets +	+ + 273 +	+ + R/W +
		+ + data i/o +
+ + SubFileType +	+ + 255 +	+ + R/W +
		+ + called OSubFileType in spec +
+ + TargetPrinter +	+ + 337 +	+ + R/W +
+ + Thresholding +	+ + 263 +	+ + R/W +
		+
+ + TileByteCounts +	+ + 324 +	+ + R/W +
		+ + data i/o +
+ + TileDepth +	+ + 32998 +	+ + R/W +
		+ + tile/strip calculations +
+ + TileLength +	+ + 323 +	+ + R/W +
		+ + data i/o +
+ + TileOffsets +	+ + 324 +	+ + R/W +
		+ + data i/o +
+ + TileWidth +	+ + 322 +	+ + R/W +
		+ + data i/o +
+ + TransferFunction +	+ + 301 +	+ + R/W +
+ + WhitePoint +	+ + 318 +	+ + R/W +
+ + XPosition +	+ + 286 +	+ + R/W +
+ + XResolution +	+ + 282 +	+ + R/W +
+ + YCbCrCoefficients +	+ + 529 +	+ + R/W +
		+ + used by TIFFRGBAImage support +
+ + YCbCrPositioning +	+ + 531 +	+ + R/W +
		+ + tile/strip size calulcations +
+ + YCbCrSubsampling +	+ + 530 +	+ + R/W +
+ + YPosition +	+ + 286 +	+ + R/W +
+ + YResolution +	+ + 283 +	+ + R/W +
		+ + used by Group 3 codec +

+ +

PSEUDO TAGS

+ + + + + +

In addition to the normal TIFF tags the +library supports a collection of tags whose values lie in a +range outside the valid range of TIFF tags. These +tags are termed pseud-tags and are used to control +various codec-specific functions within the library. The +table below summarizes the defined pseudo-tags.

+ +

Tag Name                Codec  R/W  Library Use/Notes
+

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

+ + TIFFTAG_FAXMODE +	+ + G3 +	+ + R/W +
		+ + general codec operation +
+ + TIFFTAG_FAXFILLFUNC +	+ + G3/G4 +	+ + R/W +
		+ + bitmap fill function +
+ + TIFFTAG_JPEGQUALITY +	+ + JPEG +	+ + R/W +
		+ + compression quality control +
+ + TIFFTAG_JPEGCOLORMODE +	+ + JPEG +	+ + R/W +
		+ + control colorspace conversions +
+ + TIFFTAG_JPEGTABLESMODE +	+ + JPEG +	+ + R/W +
		+ + control contents of JPEGTables tag +
+ + TIFFTAG_ZIPQUALITY +	+ + Deflate +	+ + R/Wcompression quality level +
+ + TIFFTAG_PIXARLOGDATAFMT +	+ + PixarLog +	+ + R/Wuser data format +
+ + TIFFTAG_PIXARLOGQUALITY +	+ + PixarLog +	+ + R/Wcompression quality level +
+ + TIFFTAG_SGILOGDATAFMT +	+ + SGILog +	+ + R/W +
		+ + user data format +

+ + + + + +

TIFFTAG_FAXMODE

+ + + + + +

Control the operation of the Group 3 codec. Possible +values (independent bits that can be combined by +or’ing them together) are: FAXMODE_CLASSIC (enable +old-style format in which the RTC is written at +the end of the last strip), FAXMODE_NORTC (opposite of +FAXMODE_CLASSIC; also called FAXMODE_CLASSF), FAXMODE_NOEOL +(do not write EOL codes at the start of each row +of data), FAXMODE_BYTEALIGN (align each encoded row to an +8-bit boundary), FAXMODE_WORDALIGN (align each encoded row +to an 16-bit boundary), The default value is dependent on +the compression scheme; this pseudo-tag is used by the +various G3 and G4 codecs to share code.

+ + + + + +

TIFFTAG_FAXFILLFUNC

+ + + + + +

Control the function used to convert arrays of black +and white runs to packed bit arrays. This hook can be used +to image decoded scanlines in multi-bit depth rasters (e.g. +for display in colormap mode) or for other purposes. The +default value is a pointer to a builtin function that images +packed bilevel data.

+ + + + + +

TIFFTAG_IPTCNEWSPHOTO

+ + + + + +

Tag contaings image metadata per the IPTC newsphoto +spec: Headline, captioning, credit, etc... Used by most wire +services.

+ + + + + +

TIFFTAG_PHOTOSHOP

+ + + + + +

Tag contains Photoshop captioning information and +metadata. Photoshop uses in parallel and redundantly +alongside IPTCNEWSPHOTO information.

+ + + + + +

TIFFTAG_JPEGQUALITY

+ + + + + +

Control the compression quality level used in the +baseline algorithm. Note that quality levels are in the +range 0-100 with a default value of 75.

+ + + + + +

TIFFTAG_JPEGCOLORMODE

+ + + + + +

Control whether or not conversion is done between +RGB and YCbCr colorspaces. Possible values are: +JPEGCOLORMODE_RAW (do not convert), and JPEGCOLORMODE_RGB +(convert to/from RGB) The default value is +JPEGCOLORMODE_RAW.

+ + + + + +

TIFFTAG_JPEGTABLESMODE

+ + + + + +

Control the information written in the +JPEGTables tag. Possible values (independent bits +that can be combined by or’ing them together) are: +JPEGTABLESMODE_QUANT (include quantization tables), and +JPEGTABLESMODE_HUFF (include Huffman encoding tables). The +default value is +JPEGTABLESMODE_QUANT|JPEGTABLESMODE_HUFF.

+ + + + + +

TIFFTAG_ZIPQUALITY

+ + + + + +

Control the compression technique used by the +Deflate codec. Quality levels are in the range 1-9 with +larger numbers yielding better compression at the cost of +more computation. The default quality level is 6 which +yields a good time-space tradeoff.

+ + + + + +

TIFFTAG_PIXARLOGDATAFMT

+ + + + + +

Control the format of user data passed in to +the PixarLog codec when encoding and passed out from +when decoding. Possible values are: PIXARLOGDATAFMT_8BIT for +8-bit unsigned pixels, PIXARLOGDATAFMT_8BITABGR for 8-bit +unsigned ABGR-ordered pixels, PIXARLOGDATAFMT_11BITLOG for +11-bit log-encoded raw data, PIXARLOGDATAFMT_12BITPICIO for +12-bit PICIO-compatible data, PIXARLOGDATAFMT_16BIT for +16-bit signed samples, and PIXARLOGDATAFMT_FLOAT for 32-bit +IEEE floating point samples.

+ + + + + +

TIFFTAG_PIXARLOGQUALITY

+ + + + + +

Control the compression technique used by the +PixarLog codec. This value is treated identically to +TIFFTAG_ZIPQUALITY; see the above description.

+ + + + + +

TIFFTAG_SGILOGDATAFMT

+ + + + + +

Control the format of client data passed in +to the SGILog codec when encoding and passed out from +when decoding. Possible values are: SGILOGDATAFMT_FLTXYZ for +converting between LogLuv and 32-bit IEEE floating valued +XYZ pixels, SGILOGDATAFMT_16BITLUV for 16-bit encoded Luv +pixels, SGILOGDATAFMT_32BITRAW and SGILOGDATAFMT_24BITRAW +for no conversion of data, SGILOGDATAFMT_8BITRGB for +returning 8-bit RGB data (valid only when decoding +LogLuv-encoded data), SGILOGDATAFMT_FLTY for converting +between LogL and 32-bit IEEE floating valued Y pixels, +SGILOGDATAFMT_16BITL for 16-bit encoded L pixels, and +SGILOGDATAFMT_8BITGRY for returning 8-bit greyscale data +(valid only when decoding LogL-encoded data).

+ +

DIAGNOSTICS

+ + + + + +

All error messages are directed through the +TIFFError routine. By default messages are directed +to stderr in the form: module: message\n. +Warning messages are likewise directed through the +TIFFWarning routine.

+ +

BUGS

+ + + + + +

The library does not support multi-sample images +where some samples have different bits/sample.

+ +

The library does not support random access to +compressed data that is organized with more than one row per +tile or strip.

+ + -- cgit v1.2.3