As per the RFCs:
http://tools.ietf.org/html/rfc3555#page-38
http://tools.ietf.org/html/rfc3003

CC: libav-stable@libav.org

Most importantly, it contains the encoder delay and replaygain info.

As indicated in the function documentation, the header MUST be
checked prior to calling it because no consistency check is done
there.

CC:libav-stable@libav.org

Instead of using a fixed bitrate_idx, calculate a matching bitrate for
the XING header.

Using a fixed bitrate_idx causes tools such as file(1) and mediainfo(1)
to report wrong bitrate and bitrate mode when using CBR.

Bug-Id: https://bugs.debian.org/736088

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

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

This will allow us to avoid copying the packets in many cases.

This breaks ABI.

Based on the code by:
Peter Belkner <pbelkner@snafu.de>,
Michael Niedermayer <michaelni@gmx.at>,
Clément Bœsch <clement.boesch@smartjog.com>,
Reimar Döffinger <Reimar.Doeffinger@gmx.de>, and
Tobias Rapp <t.rapp@noa-audio.com>
Alex Converse <alex.converse@gmail.com>

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

Also clarify the meaning of the log message.

Signed-off-by: Alex Converse <alex.converse@gmail.com>

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

Also add missing trailing commas, break long codec_tag lines and
add spaces in codec_tag declarations.

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

It will be need by new functions called from mp3_write_trailer().

This will allow writing the tag in several steps, needed for writing
attached pictures.

All current usages of it are incompatible with localization.
For example strcasecmp("i", "I") != 0 is possible, but would
break many of the places where it is used.

Instead use our own implementations that always treat the data
as ASCII.

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

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

Specifically, ff_mpa_freq_tab, ff_mpa_bitrate_tab, ff_mpa_decode_header,
ff_mpegaudio_decode_header.

ID3v1 are legacy tags with several limitations; furthermore
avconv/ffmpeg writes the tags in UTF-8 which probably has near-0
software support.

Add a -write_id3v1 option to be able to turn it on; disabled by default.

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

It's more readable and less prone to breakage.

This breaks API and ABI.

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

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

The two functions are identical, no point in duplicating code here.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

In the name of consistency:
put_byte           -> avio_w8
put_<type>         -> avio_w<type>
put_buffer         -> avio_write

put_nbyte will be made private
put_tag will be merged with avio_put_str

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

This also lists the objects from those two libraries as internal (by adding
the ff_ prefix) so that they can then be hidden via linker scripts.

fixes issue2562.

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

This is needed for upcoming ID3v2.3 muxing support.

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

make the initialization of put clearer

this are the differences between
[FFmpeg-devel] [PATCH 1/3] mp3enc: add support for writing UTF-16 tags
and the already applied 187e23478b

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>

Also it gets rid of some mysterious magic numbers in code.

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

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

Fixes issue 2442.

Originally committed as revision 26121 to svn://svn.ffmpeg.org/ffmpeg/trunk

ID3v2 tags which no longer works since ID3v2 handling was moved to
generic code.
In addition, in caused false-positives for all files starting with
one or more 0-bytes.

Originally committed as revision 25929 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Anton Khirnov  anton _at_ khirnov _dot_ net

Originally committed as revision 25505 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Anton Khirnov  anton _at_ khirnov _dot_ net

Originally committed as revision 25493 to svn://svn.ffmpeg.org/ffmpeg/trunk