webp: Improve valid_file to check the header for magic words#5266
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lgritz wants to merge 1 commit into
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webp: Improve valid_file to check the header for magic words#5266lgritz wants to merge 1 commit into
lgritz wants to merge 1 commit into
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This is MUCH faster than asking libwebp to open the file! Signed-off-by: Larry Gritz <lg@larrygritz.com>
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Here we are giving a 64byte header to WebpGetInfo to parse through. Is that so much slower than doing a 12byte read here? Is WebP going off the rails validating that 64bytes? |
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I found at least some cases where this kept webp from going off the rails. |
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This is MUCH faster than asking libwebp to open the file!