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On 02.09.2011 17:41, Georg Gottleuber wrote:
> Decoding this with pdf-filter outputs a different result as with pdfshow
> (MuPDF). (the first 400 byte are equal but pdfshow is right as it shows
> the full text)
In the decoder I think it is this sign error:
=== modified file 'src/base/pdf-stm-f-lzw.c'
- --- src/base/pdf-stm-f-lzw.c 2011-08-29 15:34:31 +0000
+++ src/base/pdf-stm-f-lzw.c 2011-09-02 15:58:50 +0000
@@ -687,7 +687,7 @@
if (!lzwdec_put_decoded (st, out))
return PDF_STM_FILTER_APPLY_STATUS_NO_OUTPUT; /* No more
output */
- - if (st->dict.size == st->buffer.maxval - 1 - st->early_change)
+ if (st->dict.size == st->buffer.maxval + 1 - st->early_change)
{
lzw_buffer_inc_bitsize (&st->buffer);
/* break; We must wait for the reset code, don't reset
yet. */
Did not thought that I find the error that fast. Sorry if you searched
for it meanwhile.
A patch will follow.
Regards,
Georg
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