It is supposed to be a flag. The only currently defined value is
AVIO_SEEKABLE_NORMAL, but other ones may be added in the future.
However all the current lavf code treats this field as a bool (mainly
for historical reasons).
Change all those cases to properly check for AVIO_SEEKABLE_NORMAL.
Currently, AVStream contains an embedded AVCodecContext instance, which
is used by demuxers to export stream parameters to the caller and by
muxers to receive stream parameters from the caller. It is also used
internally as the codec context that is passed to parsers.
In addition, it is also widely used by the callers as the decoding (when
demuxer) or encoding (when muxing) context, though this has been
officially discouraged since Libav 11.
There are multiple important problems with this approach:
- the fields in AVCodecContext are in general one of
* stream parameters
* codec options
* codec state
However, it's not clear which ones are which. It is consequently
unclear which fields are a demuxer allowed to set or a muxer allowed to
read. This leads to erratic behaviour depending on whether decoding or
encoding is being performed or not (and whether it uses the AVStream
embedded codec context).
- various synchronization issues arising from the fact that the same
context is used by several different APIs (muxers/demuxers,
parsers, bitstream filters and encoders/decoders) simultaneously, with
there being no clear rules for who can modify what and the different
processes being typically delayed with respect to each other.
- avformat_find_stream_info() making it necessary to support opening
and closing a single codec context multiple times, thus
complicating the semantics of freeing various allocated objects in the
codec context.
Those problems are resolved by replacing the AVStream embedded codec
context with a newly added AVCodecParameters instance, which stores only
the stream parameters exported by the demuxers or read by the muxers.
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>
Using an unsigned variable avoids problems with overflows.
There is further no need for a 64-bit intermediate here.
Signed-off-by: Mans Rullgard <mans@mansr.com>
In the name of consistency:
get_byte -> avio_r8
get_<type> -> avio_r<type>
get_buffer -> avio_read
get_partial_buffer will be made private later
get_strz is left out becase I want to change it later to return
something useful.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit b7effd4e83)
In the name of consistency:
get_byte -> avio_r8
get_<type> -> avio_r<type>
get_buffer -> avio_read
get_partial_buffer will be made private later
get_strz is left out becase I want to change it later to return
something useful.
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.
(cherry picked from commit c6610a216e)
different magic in the header (mainly targeted to Sony's .oma/.aa3
format).
Patch by Michael Karcher, ffmpeg A mkarcher dialup fu-berlin de
Originally committed as revision 23583 to svn://svn.ffmpeg.org/ffmpeg/trunk
formats with only one stream; the AVFormatContext values will be derived from
the AVStream and this helps in calculating stream bitrate.
Originally committed as revision 21361 to svn://svn.ffmpeg.org/ffmpeg/trunk
Patch by Matti Hamalainen (mhamalai@students.oamk.+358)
Thread: [PATCH] 6/6 Add parsing of ID3v2 tags in Musepack SV7 demuxer
Originally committed as revision 19631 to svn://svn.ffmpeg.org/ffmpeg/trunk
Patch by Matti Hamalainen (to get his mail address remove common endings from
"mhamalainen@studentsnen.oamknen.finen")
Thread: [PATCH]5/6 Add APE tag metadata reading support in Musepack SV7 demuxer
Originally committed as revision 19630 to svn://svn.ffmpeg.org/ffmpeg/trunk
bits_per_coded_sample but that cannot be done seperately.
Patch by Luca Abeni
Also reset the minor version and fix the forgotton change to libfaad.
Note: The API/ABI should not be considered stable yet, there still may
be a change done here or there if some developer has some cleanup ideas and
patches!
Originally committed as revision 15262 to svn://svn.ffmpeg.org/ffmpeg/trunk
patch by Stefano Sabatini, stefano.sabatini-lala poste.it
along with some spelling/consistency fixes for the long names by me
Originally committed as revision 13649 to svn://svn.ffmpeg.org/ffmpeg/trunk
patch by: Björn Axelsson, bjorn d axelsson a intinor d se
thread: [PATCH] Remove static ByteIOContexts, 06 nov 2007
Originally committed as revision 11071 to svn://svn.ffmpeg.org/ffmpeg/trunk
Michael Niedermayer
Carl Eugen Hoyos
Anton Khirnov
Alexandra Hájková
Paul B Mahol
Luca Barbato
Vittorio Giovara
Diego Biurrun
Michael Niedermayer
Justin Ruggles
Martin Storsjö
Mans Rullgard
Kostya Shishkov
Diego Elio Pettenò
Anton Khirnov
Reimar Döffinger
Michael Karcher
Stefano Sabatini
Vitor Sessak
David Conrad
Matti Hamalainen
Alex Converse
Luca Abeni
Björn Axelsson
Panagiotis Issaris