Commit 4dbc293125b417f97e5b1ca9e7260c82ff199a06
2022-08-07T09:24:57
Fix buf image mode decompr err w/ short prog JPEGs Regression introduced by 6d91e950c871103a11bac2f10c63bf998796c719 Because we're now using a 5x5 smoothing window when decompressing progressive JPEG images, we need to ensure that the whole_image virtual array contains at least five rows. Previously that was not always the case unless the progressive JPEG image being decompressed had at least five iMCU rows. Since an iMCU has a height of (8 * the vertical sampling factor), attempting to decompress 4:2:2 and 4:4:4 images <= 32 pixels in height or 4:2:0 images <= 64 pixels in height triggered a JERR_BAD_VIRTUAL_ACCESS error in decompress_smooth_data(), because access_rows exceeded the number of rows in the virtual array. Fixes #613