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Ignore unsupported quantization tables when we won't use them #12

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Ignore unsupported quantization tables when we won't use them #12

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3 changes: 2 additions & 1 deletion picojpeg.c
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Original file line number Diff line number Diff line change
Expand Up @@ -642,8 +642,9 @@ static uint8 readSOFMarker(void)
gCompVSamp[i] = (uint8)getBits1(4);
gCompQuant[i] = (uint8)getBits1(8);

if (gCompQuant[i] > 1)
if (i < 2 && gCompQuant[i] > 1) {
return PJPG_UNSUPPORTED_QUANT_TABLE;
}
}

return 0;
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