Fix Arithmetic lossless scans truncating with DNL markers.#102
Fix Arithmetic lossless scans truncating with DNL markers.#102robert-ancell wants to merge 1 commit intothorfdbg:masterfrom
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If a scan runs out of arithmetic bits and we are on the start of a line the decoder stops decoding even though the rest of the line may still be valid, just not require any bits. Instead, when we receive the DNL update the image height and continue processing as normal.
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Discovered using the following test image which runs out of bits before the last line is started. When running it through the libjpeg decoder the bottom line is black: |
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I'm not 100% sure I have the logic correct, it's not clear to me if we still need a case where ParseMCU is not called. |
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Hi Robert, |
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If a scan runs out of arithmetic bits and we are on the start of a line the decoder stops decoding even though the rest of the line may still be valid, just not require any bits.
Instead, when we receive the DNL update the image height and continue processing as normal.