=> R0 = pointer to JPEG
R1 = x coordinate at which to plot
R2 = y coordinate at which to plot
R3 = scale factors, or 0 for 1:1 scaling
R4 = length of image
R5 = plotting flags
This SWI decompresses, scales and plots on the screen a JPEG image held in a buffer.
This is similar to OS_SpriteOp 52 for sprites in that the scale factors and the coordinates have exactly the same meaning. However, this call only supports a direct plot.
In plotting the JPEG, the SpriteExtend module may claim extra workspace in a dynamic area to store tables etc. It keeps these cached until either it is asked to plot a different JPEG, or the user decreases the dynamic area's size. This speeds up successive replots of the same JPEG. You can find out how much extra workspace SpriteExtend will require - if any - by first calling JPEG_Info or JPEG_FileInfo, and hence ensure there is sufficient free memory before making this call.
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