The Developer Documentation had instructions to
subscribe to the ffmpeg-cvslog email list. But that is
no longer accurate. For the purposes in this section --
review of patches, discussion of development issues --
ffmpeg_devel is the appropriate email list. Some developers
may want to monitor ffmpeg-cvslog, but it is not mandatory.
This is v3 of this doc, based on discussion in thread
<https://ffmpeg.org/pipermail/ffmpeg-devel/2017-November/220528.html>
and in response to docs Maintainer comments in
<https://ffmpeg.org/pipermail/ffmpeg-devel/2017-December/221596.html>.
1. In doc/developer.texi, add a new section about
ffmpeg-devel, based on existing text from ffmpeg-cvslog
section regarding discussion of patches and of
development issues. Reflect wording from discussion at
<https://ffmpeg.org/pipermail/ffmpeg-devel/2017-November/221199.html>
but with copy-editing to make wording more concise.
2. In doc/developer.texi, rewrite the ffmpeg-cvslog section
to match the current usage of ffmpeg-cvslog. Some
developers choose to follow this list, but it is not
mandatory.
There are a lot of improvements possible to the
Developer Documentation page, beyond this refactoring.
However, making those improvements is a much bigger
and more difficult task. This change is "low hanging
fruit".
Signed-off-by: Jim DeLaHunt <from.ffmpeg-dev@jdlh.com>
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
This should save quite a bit of space if either has been disabled for size reasons.
Could just check if the encoding flag is set during runtime on every single location,
however the overhead of branch misses would somewhat decrease performance.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Also change note to say that we compare against the officially decoded
samples rather than our own, this was changed long ago.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Due to a somewhat high volume of complains, phase inversion has
been made optional with RFC8251. This allows for better bass
frequency response when partially downmixing to play on systems
with an LFE speaker.
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
This decoder-side change, introduced in RFC 8251 (section 9), slightly
improves the decoded quality of 16kbps speech in Hybrid Mode.
Differences can be seen/heard in testvector05.bit, testvector06.bit,
and testvector12.bit in the RFC 6716/8251 testvectors found here:
https://people.xiph.org/~greg/opus_testvectors/
Signed-off-by: Andrew D'Addesio <modchipv12@gmail.com>
As per Sec.8 of RFC8251:
Cap on Band Energy
NaN due to large log-energy value. Affects celt_denormalize().
Signed-off-by: Andrew D'Addesio <modchipv12@gmail.com>
As per Sec.6 of RFC8251:
Integer Wrap-Around in Inverse Gain Computation
32-bit integer overflow in Levinson recursion. Affects
silk_is_lpc_stable().
Signed-off-by: Andrew D'Addesio <modchipv12@gmail.com>
Add av_sat_sub32 and av_sat_dsub32 as the subtraction analogues to
av_sat_add32/av_sat_dadd32.
Also clarify the formulas for dadd32/dsub32.
Signed-off-by: Andrew D'Addesio <modchipv12@gmail.com>
The current edit unit cannot be reliably determined for the last packet of a
video stream, because we can't query the start offset of the next edit unit
from the index. This caused missing timestamps for the last video packet.
Therefore from now on, we allow setting the PTS even if we are not sure of the
current edit unit if mxf_set_current_edit_unit returned a specific failure, and
the assumed current edit unit is the last.
Fixes last packet timestamp of:
ffprobe -fflags nofillin -show_packets tests/data/lavf/lavf.mxf -select_streams v
Signed-off-by: Marton Balint <cus@passwd.hu>
Previously, the Developer Documentation <ffmpeg.org/developer.html>
contained a single chapter, "1. Developer Guide," with all content under
that single chapter. Thus the document structure was one level deeper
and more complicated than it needed to be. It differed from similar
documents such as /faq.html, which have multiple chapters.
Eliminate the single chapter, and promote each section underneath to
chapter, and each subsection to section. Thus content and relative
structure remains the same, but the overall structure is simpler.
Anchors within the page remain the same.
Signed-off-by: Jim DeLaHunt <from.ffmpeg-dev@jdlh.com>
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Fixes ticket #6804. All of the ogg header and packet parsers may
return standard AVERROR codes; these return values should not be
treated as success.
Additionally changes oggparsevorbis, to not give up too early
with certain types of poorly muxed files.
Signed-off-by: Dale Curtis <dalecurtis@chromium.org>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The macro was added in 43171a2a73, but I forgot to add it to the DJGPP architecture in that change.
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This should refer to the existing SPS structure, not the VAAPI sequence
parameter buffer (which is not yet initialised).
From ffmpeg commit f31478ba14.
Signed-off-by: Mark Thompson <sw@jkqxz.net>
Michael Niedermayer
sfan5
Jim DeLaHunt
Mark Thompson
Paul B Mahol
James Almer
Steven Liu
Rostislav Pehlivanov
Andrew D'Addesio
Robert Nagy
Carl Eugen Hoyos
Marton Balint
Martin Vignali
John Stebbins
Dale Curtis
Thomas Köppe
Jun Zhao
Jun Zhao