Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This enables non interleaved AVI mode for example.
Players that are picky on strict interleaving can set this.
Patches to only switch to non intereaved AVI mode when the index is not strictly
correctly interleaved are welcome.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is required by has_codec_parameters in libavformat/utils.c

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

All file names should be in UTF-8 within libavformat.

This is handled by mapping the open() function to an internal one
in os_support.h for windows.

fopen() could be overridden in the same way, but if that would be
used from ffmpeg.c, it would add a dependency on an ff prefixed
internal lavf function.

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

This avoids clashes if we internally want to override the global
open function.

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

This should hopefully fix roundup issue 2586.

This commit only implements it in the demuxer, not in the
protocol handler. If desired, some of the code could be
refactored to be shared by both implementations.

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

This can later be extended to support other AES bit sizes,
encryption, other crypto algorithms, reading the key from a URL, etc.

In order to use it, the key and initialization vector has to be
passed via AVOptions. Since such options can't be passed to
protocols from the command line, the protocol is currently
only for libavformat internal use.

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

Fixes ticket #93.

AVERROR_NOTSUPP has been dropped with the major bump. Since the
signalled error denotes a configuration problem, AVERROR(EINVAL) looks
an adequate replacement.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>

This helps callers to intelligently switch between bitrate
variants.

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

In write_packet(), return AVERROR(EINVAL) rather than AVERROR(EIO) if
the provided output filename pattern is not valid. Indeed this has to
be considered a configuration error rather than an I/O error.

Allow a less confusing error report.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>

AVERROR_NUMEXPECTED is used only in the image muxer and demuxer, and
has a too much specific meaning, which is better explained through a
log message. Thus it can be replaced by AVERROR(EINVAL).

This breaks API.

Signed-off-by: Stefano Sabatini <stefano.sabatini-lala@poste.it>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>

Signed-off-by: Anton Khirnov <anton@khirnov.net>

This fixes e.g. reading data over HTTP, where the underlying
socket is set to read/write.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

After switching this from a statically allocated array to a
dynamically allocated one in the major bump, this needs explicit
freeing.

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

Since the libavformat major bump, URLContext contains an AVClass,
making it a usable log context.

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

Signed-off-by: Mans Rullgard <mans@mansr.com>

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>

The problem with url_exist() is that it tries to open a resource in
RDONLY mode. If the file is a FIFO and there is already a reading
client, the open() call will hang.

By using avio_check() with access mode of 0, the second reading
process will check if the file exists without attempting to open it,
thus avoiding the lock.

Fix issue #1663.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Make AVIO_FLAG_ access constants work as flags, and in particular fix
the behavior of functions (such as avio_check()) which expect them to
be flags rather than modes.

This breaks API.

This patch also introduces CODEC_ID_CELT.

Signed-off-by: Nicolas George <nicolas.george@normalesup.org>