Define positive return values as non errors and leave further meaning undefined
This allows future extensions to use these values
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Initially written by Guillaume Martres <smarter@ubuntu.com> as a GSoC
project. Further contributions by the OpenHEVC project and other
developers, namely:
Mickaël Raulet <mraulet@insa-rennes.fr>
Seppo Tomperi <seppo.tomperi@vtt.fi>
Gildas Cocherel <gildas.cocherel@laposte.net>
Khaled Jerbi <khaled_jerbi@yahoo.fr>
Wassim Hamidouche <wassim.hamidouche@insa-rennes.fr>
Vittorio Giovara <vittorio.giovara@gmail.com>
Jan Ekström <jeebjp@gmail.com>
Anton Khirnov <anton@khirnov.net>
Martin Storsjö <martin@martin.st>
Luca Barbato <lu_zero@gentoo.org>
Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
seek_preroll field is added to the AVCodecContext struct. It indicates
the number of samples to be discarded whenever there is a discontinuity.
The minor version is bumped accordingly.
Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'c4bfa098072ba338d83555d6e2199f7e1e64ffff':
Add a WebP decoder
Conflicts:
Changelog
doc/general.texi
libavcodec/Makefile
libavcodec/avcodec.h
libavcodec/version.h
libavformat/img2.c
The previously existing webp decoder is disabled as the new
one supports lossless mode and alpha while the previous does not.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Based on a patch by Wolfram Gloger <wmglo@dent.med.uni-muenchen.de>.
http://lists.ffmpeg.org/pipermail/ffmpeg-devel/2012-December/136677.html
The original patch was rebased by Tudor SUCIU <tudor.suciu@gmail.com>.
Lots of additional features and fixes are made by me.
Fixes ticket #2086.
Changes since last version:
- change default page to all pages
Signed-off-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Remove the header decoding for PCM audio from mpeg.c and the
20/24bit parts from pcm.c and merge them into a new decoder in
pcm-dvd.c.
The decoder has added support for samples that span multiple
packets and modified 20/24bit group decoding. Both is needed to
decode samples that have been generated with DVD-Lab Pro 2. The
decoding of 16bit PCM and two channel 24bit is identical to
before. No other samples are known to verify the correctness of
the encoding this software does.
The complete list of tested formats is
48kHz/16bit/2-8 channels
48kHz/24bit/2-5 channels
96kHz/16bit/2-4 channels
96kHz/24bit/2 channels
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Using VDPAU correctly means checking for preemption
and possibly regenerating the context all the time.
With the current API there is no context or other
user-defined pointer and thus this in not possible
during decoding unless using some hack like global
variables.
The need to reinitialize both surfaces and even function
pointers makes handling preemption even more difficult.
This patch introduces a new render2 function that gets
both the AVCodecContext and AVFrame in addition,
in both the user can store additional opaque data.
This allows even advanced approaches like keeping a
"generation counter" for the surfaces so they can be
regenerated on the fly and efficiently.
In addition, the function has a return value that will
be passed through all the way instead of being silently
ignored as for the current render function.
Unfortunately the HWAccel API has no way of providing
API/ABI compatibility, so a currently disallowed
state (render pointer being NULL) is used to extend it.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
The bitstream buffers are now private and freed by libavcodec. For
backward compatibility, the hold bitstream buffer pointer is left NULL
(applications were supposed to av_freep() it).
Signed-off-by: Anton Khirnov <anton@khirnov.net>
The method guess_ni_flag needs to divide timestamps in the index
by sample_size if it is set in order to compare different streams correctly.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit '502ab21af0ca68f76d6112722c46d2f35c004053':
x86: lpc: simd av_update_lls
The versions are bumped due to changes in lls.h which is used across
libraries affecting intra library ABI
(This version bump also covers changes to lls.h in the immedeatly previous
commits)
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '41578f70cf8aec8e7565fba1ca7e07f3dc46c3d2':
lpc: use function pointers, in preparation for asm
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Currently the WebVTT demuxer parses the cues but throws away
the cue id (the optional first line of the cue) and cue
settings (the optional rendering instructions that follow
the timestamp).
However, in order to write inband text tracks (to WebM
files), the entire cue payload from the WebVTT source must
be preserved.
This commit makes no change to the data part of the output
buffer packet (where the actual cue text is stored), but
does add the cue id and settings as a side data items, if
they're present in the cue. Existing code that cares only
about the data part of the packet can continue to ignore the
side data.
There are two new packet data type flags,
AV_PKT_DATA_WEBVTT_IDENTIFIER and
AV_PKT_DATA_WEBVTT_SETTINGS.
* commit '728214992e3698305550c1762f973d2ac567f016':
vc1dec: Remove interlaced warning
vc1dec: Fix mixed field/frame intensity compensation
vc1dec: Match addressing between compensation and MC in vc1_mc_4mv_chroma4
vc1dec: Handle top and bottom blocks in vc1_mc_4mv_chroma4() differently if needed
vc1dec: Fix doxy for vc1_mc_4mv_chroma4()
vc1dec: Drop old use_ic code from vc1_b_mc
vc1: Use shuffled use_ic instead of equally shuffled mv_mode
vc1dec: Implement intensity compensation for vc1_interp_mc()
Conflicts:
Changelog
libavcodec/vc1dec.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Some fixes provided by Paul B Mahol <onemda@gmail.com>
and Michael Niedermayer <michaelni@gmx.at> and me.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Kostya Shishkov <kostya.shishkov@gmail.com>
* commit '507b1e454cf9953da3e18f33c9bd1fca78c97cb5':
avcodec: Add field order information to AVCodecParserContext.
Conflicts:
doc/APIchanges
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '803d21f38bdafe7c4e2571a9ae7052013a12923b':
lavc: schedule AVCodecContext.lowres for removal on next bump.
Conflicts:
libavcodec/avcodec.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
avcodec: Bump minor for JPEG 2000 decoder
JPEG 2000 decoder for DCinema
The mqc code is merged, the rest is added independent of
the existing jpeg2000 decoder and encoder.
Conflicts:
Changelog
doc/general.texi
libavcodec/Makefile
libavcodec/allcodecs.c
libavcodec/mqc.c
libavcodec/mqc.h
libavcodec/mqcdec.c
libavcodec/version.h
tests/fate/video.mak
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Currently, we have a AV_CODEC_ID_SSA, which matches the way the ASS/SSA
markup is muxed in a standalone .ass/.ssa file. This means the AVPacket
data starts with a "Dialogue:" string, followed by a timing information
(start and end of the event as string) and a trailing CRLF after each
line. One packet can contain several lines. We'll refer to this layout
as "SSA" or "SSA lines".
In matroska, this markup is not stored as such: it has no "Dialogue:"
prefix, it contains a ReadOrder field, the timing information is not in
the payload, and it doesn't contain the trailing CRLF. See [1] for more
info. We'll refer to this layout as "ASS".
Since we have only one common codec for both formats, the matroska
demuxer is constructing an AVPacket following the "SSA lines" format.
This causes several problems, so it was decided to change this into
clean ASS packets.
Some insight about what is changed or unchanged in this commit:
CODECS
------
- the decoding process still writes "SSA lines" markup inside the ass
fields of the subtitles rectangles (sub->rects[n]->ass), which is
still the current common way of representing decoded subtitles
markup. It is meant to change later.
- new ASS codec id: AV_CODEC_ID_ASS (which is different from the
legacy AV_CODEC_ID_SSA)
- lavc/assdec: the "ass" decoder is renamed into "ssa" (instead of
"ass") for consistency with the codec id and allows to add a real
ass decoder. This ass decoder receives clean ASS lines (so it starts
with a ReadOrder, is followed by the Layer, etc). We make sure this
is decoded properly in a new ass-line rectangle of the decoded
subtitles (the ssa decoder OTOH is doing a simple straightforward
copy). Using the packet timing instead of data string makes sure the
ass-line now contains the appropriate timing.
- lavc/assenc: just like the ass decoder, the "ssa" encoder is renamed
into "ssa" (instead of "ass") for consistency with the codec id, and
allows to add a real "ass" encoder.
One important thing about this encoder is that it only supports one
ass rectangle: we could have put several dialogue events in the
AVPacket (separated by a \0 for instance) but this would have cause
trouble for the muxer which needs not only the start time, but also
the duration: typically, you have merged events with the same start
time (stored in the AVPacket->pts) but a different duration. At the
moment, only the matroska do the merge with the SSA-line codec.
We will need to make sure all the decoders in the future can't add
more than one rectangle (and only one Dialogue line in it
obviously).
FORMATS
-------
- lavf/assenc: the .ass/.ssa muxer can take both SSA and ASS packets.
In the case of ASS packets as input, it adds the timing based on the
AVPacket pts and duration, and mux it with "Dialogue:", trailing
CRLF, etc.
- lavf/assdec: unchanged; it currently still only outputs SSA-lines
packets.
- lavf/mkv: the demuxer can now output ASS packets without the need of
any "SSA-lines" reconstruction hack. It will become the default at
next libavformat bump, and the SSA support will be dropped from the
demuxer. The muxer can take ASS packets since it's muxed normally,
and still supports the old SSA packets. All the SSA support and
hacks in Matroska code will be dropped at next lavf bump.
[1]: http://www.matroska.org/technical/specs/subtitles/ssa.html
* qatar/master:
hwaccel: fix use with frame based multithreading
Conflicts:
libavcodec/h263dec.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Allows use of AVHWAccel based decoders with frame based multithreading.
The decoders will be forced into an non-concurrent mode by delaying
ff_thread_finish_setup() calls after decoding of the current frame
is finished.
This wastes memory by unnecessarily using multiple threads and thus
copies of the decoder context but allows seamless switching between
hardware accelerated and frame threaded software decoding when the
hardware decoder does not support the stream.
The two types of packets (PCI and DSI) are passed untouched but combined by the new codec ID AV_CODEC_ID_DVD_NAV.
The first 980 bytes in the packet contain the PCI data. The next 1018 are the DSI data.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'f099d3d1d5466bd63f4ab36270d169ff9ea613b8':
Add av_log_{ask_for_sample|missing_feature} replacements to libavutil
ismindex: Check the return value of allocations
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This reverts commit d3edc65dd1, reversing
changes made to 150de78d7c.
Conflicts:
libavcodec/version.h
It seems there are several applications still using it
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit '0f24a3ca999a702f83af9307f9f47b6fdeb546a5':
lavc: remove disabled FF_API_OLD_ENCODE_VIDEO cruft
lavc: remove disabled FF_API_OLD_ENCODE_AUDIO cruft
lavc: remove disabled FF_API_OLD_DECODE_AUDIO cruft
Conflicts:
libavcodec/flacenc.c
libavcodec/libgsm.c
libavcodec/utils.c
libavcodec/version.h
The compatibility wrapers are left as they likely sre still
in wide use. They will be removed when they break or otherwise
cause work without an volunteer being available.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '8df23e938b4022d6e6e9e1180ea6418abae74fda':
lavc: postpone the removal of request_channels API.
AVFrame: deprecate all now unused fields
Merged-by: Michael Niedermayer <michaelni@gmx.at>
