read_jpeg_info

Returns width, height and color format information via w, h and chans.

void read_jpeg_info(char[] filename, int w, int h, int chans)
void
read_jpeg_info
(
in char[] filename
,
out int w
,
out int h
,
out int chans
)
void read_jpeg_info(Reader stream, int w, int h, int chans)

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imageformats jpeg functions