Signed-off-by: Martin Storsjö <martin@martin.st>

This might not be needed at the moment, but it's good practice to
pass it to all chained AVFormatContexts, if it would happen to be
used there at a later point.

Signed-off-by: Martin Storsjö <martin@martin.st>

Make it consistent with the other function-like macros.

Split away option settings, sanity checks and general setup.

Mostly cosmetic changes adding some intermediate to shorten the lines.

Fixes CVE-2012-2788

Use the MAX_URL_SIZE define where applicable. Increase buffer
sizes for all buffers that need to fit a long pathname - buffers
that need to fit only the hostname (and other short strings, but
not the pathname - such as "headers" in http_connect) are kept
at 1024 bytes for now.

Also increase the max line length in http_read_header, since it
might need to contain a full url for Location: redirects.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Diego Biurrun <diego@biurrun.de>

Anonymous typedef structs prevent forward declaration, this
change gives the AVIOContext and AVIOInterruptCB structures
a name.  These structures are now in line with other common
structures such as AVFormatContext and AVCodecContext.

Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

This packetization scheme simply places the full packets into the
RTP packet without any extra header bytes.

Signed-off-by: Martin Storsjö <martin@martin.st>

Additional safety in case a special ogg stream is crafted
with the proper number of

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

The fisbone packets can be muxed in any order as long the last one
comes before the first data packet.

Not having the header for a codec is a tell-tale of a broken file.

This allows using avcodec_free_frame() to free it properly.

This is required in chained muxers, if the SAR happens to be set.

Signed-off-by: Martin Storsjö <martin@martin.st>

Fixes bug 372.

This occurs with fuzzed mpeg-ts files. set_codec_from_probe_data() is
called with a zeroed AVProbeData since no packet made through for
specific stream.

Frames described by this grouping are the starter of a closed or
an open GOP.
This is useful for open GOP of H.264 stream which is not described
by sync sample atom.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Support Matroska native formatting.

On demuxing prepend a Frame container atom (32bit big endian encoded
frame size and 'icpf' string).
On muxing remove it.

Support Matroska native formatting.

On demuxing reconstruct the 36-bytes QuickTime atom that the ALAC
decoder expects by prepending the "atom size", "tag" and
"tag version" fields missing from the Matroska's CodecPrivate
element.

On muxing remove the initial 12 bytes

Sample files are available:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska.mka
and the CoreAudio file it was created from with today's mkvmerge:
http://www.bunkus.org/videotools/mkvtoolnix/samples/alac/alac-in-matroska-source.caf

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Stricter validation, explicitly exit on misparsing and some error
forwarding from the ebml parsing functions used.

Make MATROSKA_TRACK_ENCODING_COMP_HEADERSTRIP behave like
the other encodings and spare few lines of boilerplate code.

Make all the compression encodings behave the same way.

This fixes stream copy from a format that already has incompatible
codec tags set. The chained ismv muxer exports this same codec tag
list, so set it on this one as well, to allow the caller (and
lavf common code) to set them correctly.

Signed-off-by: Martin Storsjö <martin@martin.st>

A quite widespread pattern in the demuxer is read a 32bit unsigned
integer and then loop till this value is reached.

Checking for EOF prevents pathological situations.

The compiler fails to figure out that enc->codec_type can only
have 3 different values.
Thus when an if/else is encountered it triggers on the possibility
of the else case has not initialized the flags variable.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>