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Top Forums Programming Receiving JPEG packet from camera Post 302482055 by photon on Monday 20th of December 2010 01:25:00 PM
Old 12-20-2010
I don't have documentation that is the problem and I am forced to try and understand how to get this JPEG image correct.

Documentation does say image size is

Code:
0xNNMMZZYY - Image Size 32 bits

The data for example gives me:
NN=0
MM=0
ZZ=10
YY=64

I know how many data bytes total from the formula I calulated.
((zz - 1) * 259) + 256 + YY = DataSize for individual packets

Don't know what the formula means, but it works, so I tried to append
the bytes one by one, but got a fuzzy image and I know the camera works
because the older pascal code works and uses a Blockwrite function:
Code:
 Blockwrite(MyFileHandle, byte, 1, BytesRead);

which writes byte by byte in a loop, similar to the way I first explained and tried to emulate.
 

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JPEGICC(1)						      General Commands Manual							JPEGICC(1)

NAME
jpegicc - little cms ICC profile applier for JPEG. SYNOPSIS
jpegicc [options] input.jpg output.jpg DESCRIPTION
lcms is a standalone CMM engine, which deals with the color management. It implements a fast transformation between ICC profiles. jpegicc is little cms ICC profile applier for JPEG. OPTIONS
-b Black point compensation. -c <0,1,2,3> Precalculates transform. (0=Off, 1=Normal, 2=Hi-res, 3=LoRes) [defaults to 1] -g Marks out-of-gamut colors on softproof. -h <0,1,2> Show summary of options and examples. -i profile Input profile (defaults to sRGB). -m <0,1,2,3> SoftProof intent. -n Ignore embedded profile. -p profile Soft proof profile -o profile Output profile (defaults to sRGB). -q <0..100> Output JPEG quality. -t <0,1,2,3> Intent (0=Perceptual, 1=Colorimetric, 2=Saturation, 3=Absolute). -v Verbose. EXAMPLES
To color correct from scanner to sRGB: jpegicc -iscanner.icm in.jpg out.jpg To convert from monitor1 to monitor2: jpegicc -imon1.icm -omon2.icm in.jpg out.jpg To make a CMYK separation: jpegicc -oprinter.icm inrgb.jpg outcmyk.jpg To recover sRGB from a CMYK separation: jpegicc -iprinter.icm incmyk.jpg outrgb.jpg To convert from CIELab ITU/Fax JPEG to sRGB jpegicc -iitufax.icm in.jpg out.jpg NOTES
For suggestions, comments, bug reports etc. send mail to info@littlecms.com. SEE ALSO
tifficc(1), icc2ps(1), icclink(1), icctrans(1), wtpt(1) AUTHOR
This manual page was written by Shiju p. Nair <shiju.p@gmail.com>, for the Debian project. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWlcms | +--------------------+-----------------+ |Interface Stability | Uncommitted | +--------------------+-----------------+ NOTES
Source for LCMS is available on http://opensolaris.org. September 30, 2004 JPEGICC(1)
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