Hi Christophe
I sent you an email privately but I'm not sure if you got it. The first
patch was based on my erroneous belief that the library was only
allocating memory for one line of chroma for each frame. Looking at the
code again now I can see that the library is allocating exactly the
right amount of memory. Both of my patches and my original message
should therefore be disregarded.
I have some useful modifications to libmpeg2 which report decoding
errors to the user via a flag in the mpeg2_info_t struct, however I want
to test them more and write some documentation for the README before
submitting them. I would also be interested in attempting to write error
concealment code for libmpeg2 if nobody else is doing it.
All the best,
Ivan
On 05/05/18 22:54, Christophe Massiot wrote:
Hi,
Can you provide a sample to reproduce the crash supposedly fixed by your first
patch? Privately if needed.
Thanks in advance
On 19 Apr 2018, at 00:50, Ivan Maguidhir <i...@maguidhir.ie> wrote:
Dear libmpeg2 developers,
Find attached two patches which fix problems that I encountered while
processing MPEG2 streams from a large number of DVD-Video discs using the
library. The P0_buffer_overflow.patch fixes bugs to do with the allocation
of memory for each frame's chroma information. The
P1_unexpected_gop_header.patch causes the parser to accept a GOP header when
a picture has already started. This can happen where streams have been
spliced together, for example. I hope these are of some use.
Kind regards,
Ivan Maguidhir
<P0_buffer_overflow.patch><P1_unexpected_gop_header.patch>------------------------------------------------------------------------------
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