An auxiliary function for AVFormatContexts (mainly muxers,
but potentially (e.g. rtsp) also demuxers).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is only used by demuxers (and it is generally demuxers
who have to translate format-specific IDs to stream indices).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is not forbidden to call this with a muxer, so it is moved to
avformat.c and not demux_utils.c. ff_find_decoder(), which is used
by av_find_best_stream() is also moved as well, despite being even
more geared towards demuxers.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
While it is clearly written with demuxers in mind,
it is not forbidden to call it with muxers, hence avformat.c
and not demux_utils.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is not explicitly forbidden to call these functions with muxers
(although it is probably intended to be only called by demuxers;
av_guess_sample_aspect_ratio even says that "the stream aspect ratio
is set by the demuxer").
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is not to call this with a muxer, so move it to avformat.c
and not demux_utils.c.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This file will contain the AVFormatContext-specific parts
that are used by both demuxers and muxers.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is only used by demuxers (although it is hypothetically
possible that some day e.g. a protocol might need it, but
that is unlikely given that they don't deal with AVCodecParameters).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is demuxer-only: It potentially adds an AVStream and it sets
AVStream.attached_pic.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This function is only intended for demuxers (as calling it doesn't
have any observable effect for a muxer).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is demuxer-only: Muxers deal only with chapters given to them;
they don't create any of their own.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This file is both for the various public APIs that are demuxer-only
as well as for the demuxer-only internal functions.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
ff_get_packet_palette() and ff_reshuffle_raw_rgb() belong together:
E.g. the former takes the return value of the latter as argument.
So move ff_get_packet_palette() to rawutils.c (which consists solely
of ff_reshuffle_raw_rgb()).
Also add a separate header for these two functions.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is only used by muxers. Given that it is not part of
the core muxing code and given that mux.c is already big enough,
it is moved to a new file for utility functions for muxing.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is the appropriate place given that AVStream is about to
become an AVOpt-enabled struct.
Also move av_disposition_(to|from)_string, as these are tied
to the disposition stream option.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Also improve the size check a bit; given that av_realloc_array()
checks for overflow itself, we only have to check for
nb_side_data + 1 still being representable in an int.
But given that we can check for representability in size_t
at no additional cost we do so as it leads to a nicer error code.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This avoids having to rebuild big files every time FFMPEG_VERSION
changes (which it does with every commit).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They are incompatible with the new channel layout scheme and no decoder
uses them.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Fixes: pointer index expression with base 0x000000000000 overflowed to 0xffffffffffffffff
Fixes: 44012/clusterfuzz-testcase-minimized-ffmpeg_dem_HLS_fuzzer-5670607746891776
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Updating a chapter with the same id does not break monotonicity
Fixes: Timeout
Fixes: 43727/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-4960623367159808
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Up until now, we had a PacketList structure which is actually
a PacketListEntry; a proper PacketList did not exist
and all the related functions just passed pointers to pointers
to the head and tail elements around. All these pointers were
actually consecutive elements of their containing structs,
i.e. the users already treated them as if they were a struct.
So add a proper PacketList struct and rename the current PacketList
to PacketListEntry; also make the functions use this structure
instead of the pair of pointers.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This function is quite small (96B with GCC 11.2 on x64 Ubuntu 21.10
at -O3), making it more economical to duplicate it into libavformat
instead of exporting it as avpriv: Doing so saves 2x24B in .dynsim,
2x16B in .dynstr, 2x2B .gnu.version, 24B in .rela.plt, 16B in .plt,
16B in .plt.sec (if enabled), 4B .gnu.hash; besides the actual
duplicated code this also adds 2x8B .eh_frame_hdr and 24B .eh_frame.
In other words: Duplicating is neutral size-wise (it is also presumed
neutral for other systems). Given that it avoids the runtime
overhead of dynamic symbols, it is advantageouos to duplicate the
function.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Adds support for concat demuxer to copy the side data information
from the input file to the resulting file. It will behave like the
metadata copy, where the metadata of the first file is kept in the
the output file.
Extract the current code that already performs the stream side_data
copy into a separate method and reuse the method in the concat demuxer.
Signed-off-by: Gerard Sole <g.sole.ca@gmail.com>
Otherwise there is no way to detect an error returned by avio_close() because
ff_format_io_close cannot get the return value.
Checking the return value of the close function is important in order to check
if all data was successfully written and the underlying close() operation was
successful.
It can also be useful even for read mode because it can return any pending
AVIOContext error, so the user don't have to manually check AVIOContext->error.
In order to still support if the user overrides io_close, the generic code only
uses io_close2 if io_close is either NULL or the default io_close callback.
Signed-off-by: Marton Balint <cus@passwd.hu>
Andreas Rheinhardt
Martin Storsjö
Anton Khirnov
Peter Ross
Michael Niedermayer
Marton Balint
Gerard Sole