Many cameras have a "debug mode" that writes JPEG and raw at the same time. The raw file has no header, so try to to open the matching JPEG fil

out must be buffer big enough to contain full image, and in must contain the full decompressed data from the IDAT chunks (with filter index bytes and

Prediction used for interpolation / alpha=0 pixels. Does not have to be the same as the guess used for encoding/decoding.

background color chunk (bKGD)*/

international text chunk (iTXt)*/

text chunk (tEXt)*/

compressed text chunk (zTXt)*/

put a pixel, given its RGBA16 color, into image of any color 16-bitdepth type*/

put a pixel, given its RGBA color, into image of any color type*/

write given buffer to the file, overwriting the file, it doesn't append to it.*/

build a table that decodes both magnitude and value of small ACs in one go.

decode image to YCbCr format

this function is designed to support animated gifs, although stb_image doesn't support it

@OPTIMIZE: store non-zigzagged during the decode passes, and only de-zigzag when dequantizing