[Matroska-devel] libEBML 1.3.1, libMatroska 1.4.2 released

Moritz Bunkus moritz at bunkus.org
Sun Jan 4 15:21:52 CET 2015


Hey,

I've released new versions of libEBML (v1.3.1) and libMatroska
(v1.4.2). Download links for the impatient:

http://dl.matroska.org/downloads/libebml/libebml-1.3.1.tar.bz2
http://dl.matroska.org/downloads/libmatroska/libmatroska-1.4.2.tar.bz2

Important news about the changes below; so please continue to read:

Both are binary-compatible to their respective previous releases and did
not have their .so version bumped.

In both libraries several instances of out-of-bounds memory accesses
have been fixed. libEBML will also not catch exceptions thrown by an
IOCallback instance anymore.

The build system of both libraries has been switched to use autoconf,
automake and libtool. Now you can (or have to) use the normal
three-point procedure of »configure && make && make install«. The upside
is that this should make cross-compilation easier.

In addition both libraries now come with pkg-config files. These are
called »libebml« and »libmatroska« respectively (all
lower-case). libMatroska's configure script already uses pkg-config for
determining libEBML's location. Here the usual environment variables
used for pkg-config are used as well (most notably PKG_CONFIG_PATH).

The upcoming release of MKVToolNix will require both of these two new
versions.

Here's libEBML's ChangeLog since the previous release (v1.3.0):

----------------------------------------------------------------------
2015-01-04  Moritz Bunkus  <moritz at bunkus.org>

        * Released v1.3.1.

        * EbmlElement::Render(): doesn't catch exceptions anymore. Instead
        exceptions generated from the IOCallback class (e.g. if a write
        failed) are propagated to the caller.

2014-12-21  Moritz Bunkus  <moritz at bunkus.org>

        * build system: switched the build system from hand-crafted
        Makefiles to an autoconf/automake-based system. A pkg-config file
        will be installed as well; its name is »libebml«. Patch by Jan
        Engelhardt <jengelh at inai.de>.

2014-12-20  Moritz Bunkus  <moritz at bunkus.org>

        * EbmlMaster::Read(): when reading with SCOPE_ALL_DATA only those
        elements that could successfully be read will be kept
        (e.g. defective block groups will be dropped).

2014-12-19  Moritz Bunkus  <moritz at bunkus.org>

        * EbmlMemoryStream: add a new class for safe memory access that
        throws exception on failures.

2014-12-18  Moritz Bunkus  <moritz at bunkus.org>

        * EbmlMaster: Fixed read() trying to calculate the end position of
        elements with an unknown size. This avoids endless loops and
        assertions in certain cases. See https://trac.bunkus.org/ticket/1089
----------------------------------------------------------------------

Here's libMatroska's ChangeLog since the previous release (v1.3.0):

----------------------------------------------------------------------
2015-01-04  Moritz Bunkus  <moritz at bunkus.org>

        * Released v1.4.2.

2014-12-21  Moritz Bunkus  <moritz at bunkus.org>

        * build system: switched the build system from hand-crafted
        Makefiles to an autoconf/automake-based system. A pkg-config file
        will be installed as well; its name is »libmatroska«. Based on a
        similar patch for libEBML by Jan Engelhardt <jengelh at inai.de>.

2014-12-20  Moritz Bunkus  <moritz at bunkus.org>

        * KaxBlock::ReadData(): fixed several instances of unchecked
        memory access leading to invalid memory access/segmentation faults
        with invalid or broken data inside block groups/simple blocks.

2014-12-19  Moritz Bunkus  <moritz at bunkus.org>

        * KaxBlock::ReadInternalHead(): fixed a off-by-one buffer overflow
        if with EBML lacing and exactly one frame in the lace.
----------------------------------------------------------------------

Have fun.

Kind regards,
mosu
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