It allows attaching other external, opaque data to the frame and passing it
through the reordering process, for cases when the caller wants other data
than just the plain packet pts. There is no way to cleanly achieve this
without the field.
The rationale is that you have a packed format in form
<greyscale sample> <alpha sample> <greyscale sample> <alpha sample>
and shortening greyscale to 'G' might make one thing about Greenscale instead.
An alias pixel format and color space name are provided for compatibility.
* commit '69e7336b8e16ee65226fc20381baf537f4b125e6':
avstring: Expose the simple name match function
Conflicts:
libavutil/avstring.c
libavutil/avstring.h
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'c5fca0174db9ed45be821177f49bd9633152704d':
lavc: add a property for marking codecs that support frame reordering
Conflicts:
doc/APIchanges
libavcodec/avcodec.h
libavcodec/codec_desc.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
This provides a public sustainable API/ABI for DCT functions.
Only externally used dct functions are included.
The structure is extensible without ABI issues compared to the
existing dct contexts.
See Mailing list and IRC log of 2014-07-26/27
Reviewed-by: ubitux
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
The AVStream.parser field is considered private and its location cannot be
preserved while preserving also ABI compatibility to libav, as libav added fields
before it.
Some tools like ffmpeg.c access this field though
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'f6ee61fb05482c617f5deee29a190d8ff483b3d1':
lavc: export DV profile API used by muxer/demuxer as public
Conflicts:
configure
doc/APIchanges
libavcodec/Makefile
libavcodec/dv_profile.c
libavcodec/dv_profile.h
libavcodec/version.h
libavformat/dvenc.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'f134b5ec53b4cb51cb69bf0c64de87687ea72b12':
apichanges: fill in changes for lavu 51.19 and 51.20
Conflicts:
doc/APIchanges
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '9e500efdbe0deeff1602500ebc229a0a6b6bb1a2':
Add av_image_check_sar() and use it to validate SAR
Conflicts:
libavcodec/dpx.c
libavcodec/dvdec.c
libavcodec/ffv1dec.c
libavcodec/utils.c
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '874390e163427c1fe7682ab27924a7843780dbb3':
lavc: add a convenience function for rescaling timestamps in a packet
Conflicts:
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '194be1f43ea391eb986732707435176e579265aa':
lavf: switch to AVStream.time_base as the hint for the muxer timebase
Conflicts:
doc/APIchanges
libavformat/filmstripenc.c
libavformat/movenc.c
libavformat/mxfenc.c
libavformat/oggenc.c
libavformat/swf.h
libavformat/version.h
tests/ref/lavf/mkv
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Previously, AVStream.codec.time_base was used for that purpose, which
was quite confusing for the callers. This change also opens the path for
removing AVStream.codec.
The change in the lavf-mkv test is due to the native timebase (1/1000)
being used instead of the default one (1/90000), so the packets are now
sent to the crc muxer in the same order in which they are demuxed
(previously some of them got reordered because of inexact timestamp
conversion).
* commit '0957b274e312e985d69cb490bee2a7ff820acaa6':
lavc: add an option to enable side data-only packets during encoding
Conflicts:
libavcodec/avcodec.h
libavcodec/options_table.h
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '8c02adc62d71dfbb079a04753d8c16152c49de88':
lavu: add all color-related enums to AVFrame
Conflicts:
libavcodec/avcodec.h
libavutil/frame.c
libavutil/frame.h
libavutil/version.h
The version check is changed so they are available with the current ABI
FFmpeg libs should have no problems with added fields, nor should any
application using the libs, and we regularly added fields in the past.
We also moved 2 of these fields to AVFrame already previously without issues.
See: a80e622924
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Some encoders (e.g. flac) need to send side data when there is no more
data to be output. This enables them to output a packet with no data in
it, only side data.
* commit '6d212599aa684f30511fb08ca30fe2378405304e':
avformat: Provide a standard compliance flag
Conflicts:
doc/APIchanges
libavformat/avformat.h
libavformat/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '21f68c2489cba2a1a4a41d0c5c828266e6162800':
avcodec: bump version after rotation api
Conflicts:
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'a312f71090ee620ee252f2034aef6b13e2dafe9c':
lavf: deprecate now unused AVStream.pts
Conflicts:
libavformat/mux.c
libavformat/version.h
mostly not merged as the code is needed for a/vsync drop handling
and what the code does is what is needed, it could maybe be moved
elsewhere or factored somehow but simply removing it would be droping
these features.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Add AV_PKT_DATA_DISPLAYMATRIX and AV_FRAME_DATA_DISPLAYMATRIX as stream and
frame side data (respectively) to describe a display transformation matrix
for linear transformation operations on the decoded video.
Add functions to easily extract a rotation angle from a matrix and
conversely to setup a matrix for a given rotation angle.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
* commit '33082af7560a18179b52734665ef66f812902d33':
doc/APIchanges: fill in missing hashes and dates
Conflicts:
doc/APIchanges
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Right now, the caller has to manually manage some allocated
AVCodecContext fields, like extradata or subtitle_header. This is
fragile and prone to leaks, especially if we want to add more such
fields in the future.
The only reason for this behaviour is so that the AVStream codec context
can be reused for decoding. Such reuse is discouraged anyway, so this
commit is the first step to deprecating it.
These functions are using the POSIX clock_gettime() function with the
CLOCK_MONOTONIC clock id. If these are not present on the targeted
platform, the new functions will fallback on using the original realtime functions
av_gettime() and av_usleep().
Monotonic support can be added on other platforms with their
equivalent native system API eventually if possible.
Whenever time is requested to measure relative time, the monotonic clock,
when available, is superior to the system realtime clock because it is
not affected by discontinuous jumps in the system time
In a future step, offering the flexibility to let the user choose between
rt and monotonic clock for avdevices packets will be investigated.
It is very easy to experience the issues that this patch attempt to address
by rewinding back in the past the system time while ffmpeg is running.
this is breaking the ffmpeg report printing (ffmepg.c:print_report()) and
the the rate emulator functionality (-re) without the patch.
Signed-off-by: Olivier Langlois <olivier@trillion01.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Use it instead of checking CODEC_FLAG_BITEXACT in the first stream's
codec context.
Using codec options inside lavf is fragile and can easily break when the
muxing codec context is not the encoding context.
* commit '66e6c8a7b4e3ac926302529606bd3e323c28b20f':
lavu: Add a pixel format for new VDA hwaccel
Conflicts:
doc/APIchanges
libavutil/pixfmt.h
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Existing av_opt_set_dict doesn't accept flags.
It doesn't allow to pass options to nested structs.
New function alllows that.
Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
* commit '6484149158b6fc6d13d2b2ef84cb26a2d3275400':
lavc: make the xvid-specific "gmc" flag a private option of libxvid
Conflicts:
libavcodec/libxvid.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit 'ed4b757177f9b563412cdbc8ee3405d82e10fc05':
dxva2_h264: add a workaround for old Intel GPUs
Conflicts:
doc/APIchanges
libavcodec/version.h
See: 8b2a130d3f
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Old Intel GPUs expect the reference frame index to the actual surface,
instead of the index into RefFrameList as specified by the spec.
This workaround should be set when using one of the "ClearVideo" decoder
devices.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This fixes usage of AV_TIME_BASE_Q in C++ applications, which
cannot use compound literals directly in their code.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This fixes usage of AV_TIME_BASE_Q in C++ applications, which
cannot use compound literals directly in their code.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
After this commit applications needs to call av_format_inject_global_side_data()
or handle AVStream side data by some other means if they want it not to be lost.
This fixes a API incompatibility with libav.
libav API does not allow the data to be passed through AVPackets
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
