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/TIFFReadRGBAImage.3tiff.html | 301 +++++++++++++++++++++++++++++ 1 file changed, 301 insertions(+) create mode 100644 tiff/html/man/TIFFReadRGBAImage.3tiff.html (limited to 'tiff/html/man/TIFFReadRGBAImage.3tiff.html') diff --git a/tiff/html/man/TIFFReadRGBAImage.3tiff.html b/tiff/html/man/TIFFReadRGBAImage.3tiff.html new file mode 100644 index 0000000..165284e --- /dev/null +++ b/tiff/html/man/TIFFReadRGBAImage.3tiff.html @@ -0,0 +1,301 @@ + + + + + + +TIFFReadRGBAImage + + + +

TIFFReadRGBAImage

+NAME
+SYNOPSIS
+DESCRIPTION
+NOTES
+RETURN VALUES
+DIAGNOSTICS
+SEE ALSO
+ +

+ +

NAME

+ + + + + +

TIFFReadRGBAImage, TIFFReadRGBAImageOriented − read +and decode an image into a fixed-format raster

+ +

SYNOPSIS

+ + + + + +

#include <tiffio.h>

+ +

#define TIFFGetR(abgr) ((abgr) & 0xff)
+#define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)
+#define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)
+#define TIFFGetA(abgr) (((abgr) >> 24) & +0xff)

+ +

int TIFFReadRGBAImage(TIFF *tif, +uint32 width, uint32 height, +uint32 *raster, int +stopOnError)
+int TIFFReadRGBAImageOriented(TIFF *tif, +uint32 width, uint32 height, +uint32 *raster, int orientation, +int stopOnError)

+ +

DESCRIPTION

+ + + + + +

TIFFReadRGBAImage reads a strip- or tile-based +image into memory, storing the result in the user supplied +raster. The raster is assumed to be an array of +width times height 32-bit entries, where +width must be less than or equal to the width of the +image (height may be any non-zero size). If the +raster dimensions are smaller than the image, the image data +is cropped to the raster bounds. If the raster height is +greater than that of the image, then the image data are +placed in the lower part of the raster. (Note that the +raster is assume to be organized such that the pixel at +location (x,y) is +raster[y*width+x]; with the +raster origin in the lower-left hand corner.)

+ +

TIFFReadRGBAImageOriented works like +TIFFReadRGBAImage with except of that user can +specify the raster origin position with the +orientation parameter. Four orientations +supported:

+ + + + + +

ORIENTATION_TOPLEFT

+ + + + + +

origin in top-left corner,

+ + + + + +

ORIENTATION_TOPRIGHT

+ + + + + +

origin in top-right corner,

+ + + + + +

ORIENTATION_BOTLEFT

+ + + + + +

origin in bottom-left corner and

+ + + + + +

ORIENTATION_BOTRIGHT

+ + + + + +

origin in bottom-right corner.

+ + + + + +

If you choose ORIENTATION_BOTLEFT result will be +the same as returned by the TIFFReadRGBAImage.

+ +

Raster pixels are 8-bit packed red, green, blue, alpha +samples. The macros TIFFGetR, TIFFGetG, +TIFFGetB, and TIFFGetA should be used to +access individual samples. Images without Associated Alpha +matting information have a constant Alpha of 1.0 (255).

+ +

TIFFReadRGBAImage converts non-8-bit images by +scaling sample values. Palette, grayscale, bilevel, +CMYK , and YCbCr images are converted to +RGB transparently. Raster pixels are returned +uncorrected by any colorimetry information present in the +directory.

+ +

The paramater stopOnError specifies how to act if +an error is encountered while reading the image. If +stopOnError is non-zero, then an error will terminate +the operation; otherwise TIFFReadRGBAImage will +continue processing data until all the possible data in the +image have been requested.

+ +

NOTES

+ + + + + +

In C++ the stopOnError parameter defaults to +0.

+ +

Samples must be either 1, 2, 4, 8, or 16 bits. +Colorimetric samples/pixel must be either 1, 3, or 4 (i.e. +SamplesPerPixel minus ExtraSamples).

+ +

Palettte image colormaps that appear to be incorrectly +written as 8-bit values are automatically scaled to +16-bits.

+ +

TIFFReadRGBAImage is just a wrapper around the +more general TIFFRGBAImage(3TIFF) facilities.

+ +

RETURN VALUES

+ + + + + +

1 is returned if the image was successfully read and +converted. Otherwise, 0 is returned if an error was +encountered and stopOnError is zero.

+ +

DIAGNOSTICS

+ + + + + +

All error messages are directed to the +TIFFError(3TIFF) routine.

+ +

Sorry, can not handle %d-bit pictures. The image +had BitsPerSample other than 1, 2, 4, 8, or 16.

+ +

Sorry, can not handle %d-channel images. The image +had SamplesPerPixel other than 1, 3, or 4.

+ +

Missing needed "PhotometricInterpretation" +tag. The image did not have a tag that describes how to +display the data.

+ +

No "PhotometricInterpretation" tag, assuming +RGB. The image was missing a tag that describes how to +display it, but because it has 3 or 4 samples/pixel, it is +assumed to be RGB.

+ +

No "PhotometricInterpretation" tag, assuming +min-is-black. The image was missing a tag that describes +how to display it, but because it has 1 sample/pixel, it is +assumed to be a grayscale or bilevel image.

+ +

No space for photometric conversion table. There +was insufficient memory for a table used to convert image +samples to 8-bit RGB.

+ +

Missing required "Colormap" tag. A +Palette image did not have a required Colormap +tag.

+ +

No space for tile buffer. There was insufficient +memory to allocate an i/o buffer.

+ +

No space for strip buffer. There was insufficient +memory to allocate an i/o buffer.

+ +

Can not handle format. The image has a format +(combination of BitsPerSample, +SamplesPerPixel, and +PhotometricInterpretation) that +TIFFReadRGBAImage can not handle.

+ +

No space for B&W mapping table. There was +insufficient memory to allocate a table used to map +grayscale data to RGB.

+ +

No space for Palette mapping table. There was +insufficient memory to allocate a table used to map data to +8-bit RGB.

+ +