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JPEG_ColorSpace
Specify the loaded color space.
JPEG_RGB is separate RGB channels.
JPEG_GRAYLEV is unique intensity channel (gray levels).
JPEG_YCbCr three channels (CCIR Recommendation 601-1)
JPEG_CMYK four channels (Cyan Magenta Yellow Black) - linear convertion
JPEG_YCbCrK four channels (YCbCr and Black)
JPEG_DCTMethod
Specify the DCT method.
JPEG_ISLOW is slow but accurate integer algorithm.
JPEG_IFAST is faster, less accurate integer method.
JPEG_FLOAT is a floating-point method (machine dependent).
JPEG_OptimalHuffman
Specifies if jpeg compressor have to use an optimal huffman table (more compression)), instead standard table.
JPEG_Progressive
Specifies if this is a progressive jpeg.
JPEG_Quality
Quality factor, from 1 to 100. The higher the value, the better the image quality, and the larger resultant memory needed.
JPEG_Smooth
Smoothing factor (0 is none, 100 is max). If JPEG_Smooth is not zero, the jpeg compressor smooth the image before compress it. This improves compression.
JPEG_Scale
JPEGScale defines the sizes of loaded JPEG image. This proprety affects the speed of load.
Allowed values are:
JPEG_AUTOCALC : self calculates JPEGScale to mach Params.Width and Params.Height properties;
JPEG_FULLSIZE : full size image (default). Slow loading.
JPEG_HALF : 1/2 of the full size;
JPEG_QUARTER : 1/4 of the full size;
JPEG_EIGHTH : 1/8 of the full size. Very fast loading.
JPEG_MarkerList
JPEG_MarkerList contains a list of markers contained in a JPEG file. JPEG markers can contains text, objects and images. Applications can read raw markers from JPEG_MarkerList.
JPEG_WarningTot
JPEG_WarningTot is the count of all warnings encountered during loading a Jpeg. We suggest to use Aborting to see if the image is corrupted.
JPEG_WarningCode
JPEG_WarningCode is the last warning code encountered during loading a Jpeg.
JPEG_OriginalWidth
JPEG_OriginalWidth specifies the original width when the jpeg image is scaled (using JPEG_Scale).
JPEG_OriginalHeight
JPEG_OriginalHeight specifies the original height when the jpeg image is scaled (using JPEG_Scale).
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