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>
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>
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>
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>
Use the xm# and ym# aliases as they remain in sync with m# after a SWAP.
No actual changes to the assembly.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Also port relevant AVX2/XOP optimizations from x264 with permission
to relicense to LGPL from the corresponding authors
Signed-off-by: James Almer <jamrial@gmail.com>
Reviewed-by: "Ronald S. Bultje" <rsbultje@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This change make error handling simplier.
av_opt_freep_ranges may be called when some ranges are NULL,
for example after memory allocation fail.
Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
According to the ReplayGain spec, the peak amplitude may overflow and may result
in peak amplitude values greater than 1.0 with psychoacoustically coded audio,
such as MP3. Fully compliant decoders must allow peak overflows.
Additionally, having peak values in the 0<->UINT32_MAX scale makes it more
difficult for applications to actually use the peak values (e.g. when
implementing clipping prevention) since values have to be rescaled down.
This patch corrects the peak parsing by removing the rescaling of the decoded
values between 0 and UINT32_MAX and the 1.0 upper limit.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Configure will detect the availability of the Windows' console functions and set
HAVE_SETCONSOLETEXTATTRIBUTE. Meaning av_log will use those functions to
control colours. When ffmpeg is run in Cygwin's mintty terminal emulator it
will not use colour highlighting in this case.
Mintty responds to the usual escape code colours (it even supports 256 colours).
Windows' cmd.exe does not. Fortunately it seems that Cygwin's emulation layer
now translates the basic 16 colours into Windows' Console command functions.
That means that we can have av_log use the standard colour commands and let
ffmpeg print colours in both mintty and cmd.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Lukasz Marek
Martin Storsjö
Vittorio Giovara
Olivier Langlois
Michael Niedermayer
Anton Khirnov
Matt Oliver
Luca Barbato
Nicolas George
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James Almer
Y.C. Liu
Janne Grunau
Carl Eugen Hoyos
Derek Buitenhuis
Alessandro Ghedini
Timothy Gu
Janne Grunau
Lukasz Marek
James Darnley