It dates back to pre-2005 days, when people generally tended to commit
their work directly without going through the mailing list. Few
developers do it today, and never outside of their standalone modules.
This item is thus confusing and misleading and is better removed.
The section consistes of a single short paragraph linking to other
chapters. The enclosing chapter also has no other sections, all other
text is placed in the chapter directly.
Keeping a separate section for this paragraph just adds more clutter.
It is also used by AVCodecContext.
Reviewed-by: James Almer <jamrial@gmail.com>
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is of no value to the user, because every muxer can always
be flushed with a NULL packet. As its documentation shows
("If not set, the muxer will not receive a NULL packet in
the write_packet function") it is actually an internal flag
that has been publically exposed because there was no internal
flags field for output formats for a long time. But now there is
and so use it by replacing the public flag with a private one.
Reviewed-by: James Almer <jamrial@gmail.com>
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They were replaced by TX from libavutil; the tremendous work
to get to this point (both creating TX as well as porting
the users of the components removed in this commit) was
completely performed by Lynne alone.
Removing the subsystems from configure may break some command lines,
because the --disable-fft etc. options are no longer recognized.
Co-authored-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
ISO C++ forbids compound-literals. It's not available with MSVC.
This is a known issue from 10 years ago, and that's why there is a
av_get_time_base_q().
Since we have no plan to remove AV_TIME_BASE_Q, just make it
available in C++.
There are multiple choices:
1. Use C++11 syntax: AVRational{1, AV_TIME_BASE}
Users may still use C++98 to write new code. So no.
2. Use av_get_time_base_q().
It's for this purpose. But it's not compile time constants as
AV_TIME_BASE_Q in C.
So I choose av_make_q() as Anton's suggestion.
https://libav-devel.libav.narkive.com/ZQCWfTun/patch-0-2-fix-avutil-h-usage-from-c
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
It is badly named (should have been -top_field_first, or at least -tff),
underdocumented and underspecified, and (most importantly) entirely
redundant with the setfield filter.
It was added in cb114ed464 with the comment
"This will allow fixing several bugs with the -shortest option".
Since
* there is no explanation of what these bugs are
* libavformat is not the place to work around ffmpeg CLI bugs
* there is no indication that this feature is actually in use
deprecate it without replacement.
For badly interleaved files, interleave packets from multiple tracks
at the demuxer level can trigger seeking back and forth, which can be
dramatically slow depending on the protocol. Demuxer level interleave
can be useless sometimes, e.g., reading mp4 via http and then
transcoding/remux to DASH. Disable this option when you don't need the
demuxer level interleave, and want to avoid the IO penalizes.
Co-authored-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Zhao Zhili <zhilizhao@tencent.com>
av_image_copy() accepts const uint8_t* const * as source;
lots of user have uint8_t* const * and therefore either
cast (the majority) or copy the array of pointers.
This commit changes this by adding a static inline wrapper
for av_image_copy() that casts between the two types
so that we do not need to add casts everywhere else.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Also constify AVAudioFifo* in the peek functions
besides constifying intermediate pointers (void**->void * const *).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is done immediately without waiting for the next major bump
just as in 9546b3a1cb and
4eaaa38d3d.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
They are currently non-const for reasons unknown, although
avio_write() accepts a const buffer.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
These defines are also used in other contexts than just AVCodecContext
ones, e.g. in libavformat. Furthermore, given that these defines are
public, the AV-prefix is the right one, so deprecate (and not just move)
the FF-macros.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This reverts commit eb88ccb92e.
AVCodecContext fields are the proper place for a decoder to export such values.
This change is in preparation for the following commits.
add option named rtmp_enhanced_codec,
it would support hvc1,av01,vp09 now,
the fourcc is using Array of strings.
Signed-off-by: Steven Liu <lq@chinaffmpeg.org>
These are in-place transforms, required for DCT-I and DST-I.
Templated as the mod2 variant requires minor modifications, and is
required specifically for DCT-I/DST-I.
Can be used to configure libplacebo's underlying raw options, which
sometimes includes new or advanced / in-depth settings not (yet) exposed
by vf_libplacebo.
C++ doesn't support designated initializers until C++20. We have
a bunch of pre-defined channel layouts, the gains to make them
usable in C++ exceed the losses.
Bump minor version so C++ project can check before use these defines.
Also initialize .opaque field explicitly to reduce warning in C++.
Signed-off-by: James Almer <jamrial@gmail.com>
The commits eac4324bfb and
cd8211527e renamed the examples, but the
targets were not updated. Hence, the builds are missing -lm.
Signed-off-by: Sebastian Ramacher <sramacher@debian.org>
Signed-off-by: James Almer <jamrial@gmail.com>
