Libjpeg
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JCOEF is a short, it can be changed to an int for a speed increase. | JCOEF is a short, it can be changed to an int for a speed increase. | ||
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JCOEFPTR is "JCOEF FAR *" (currently a short *). | JCOEFPTR is "JCOEF FAR *" (currently a short *). | ||
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JSAMPLE is unsigned char | JSAMPLE is unsigned char | ||
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JSAMPROW is "JSAMPLE FAR *" (pointer to one image row of pixel samples) | JSAMPROW is "JSAMPLE FAR *" (pointer to one image row of pixel samples) | ||
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| + | inptr is is JCOEFPTR, but it would probably be faster as an int ptr. | ||
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| + | quantptr is an int32* or a uint32* (probably an int32* since imul is used) | ||
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| + | DEQUANTIZE appears to do nothing more than multiply. | ||
Latest revision as of 03:56, 15 August 2009
JCOEF is a short, it can be changed to an int for a speed increase.
JCOEFPTR is "JCOEF FAR *" (currently a short *).
JSAMPLE is unsigned char
JSAMPROW is "JSAMPLE FAR *" (pointer to one image row of pixel samples)
inptr is is JCOEFPTR, but it would probably be faster as an int ptr.
quantptr is an int32* or a uint32* (probably an int32* since imul is used)
DEQUANTIZE appears to do nothing more than multiply.
