Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Without this patch, "Library Version Macros" module is not visible on
libavutil homepage in `make apidoc`.
Signed-off-by: NTimothy Gu <timothygu99@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Allows to alloc fifo buffer by passing
number of elements and size of element.
Signed-off-by: NLukasz Marek <lukasz.m.luki2@gmail.com>

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: NAnton 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: NOlivier Langlois <olivier@trillion01.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This will become "const" on the next major API version
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

The current hwaccel is broken and cannot be fixed in a compatible
way. It will be deprecated and replaced with a new one.

Function allows to free fifo and reset freed pointer.
Signed-off-by: NLukasz Marek <lukasz.m.luki2@gmail.com>

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: NLukasz Marek <lukasz.m.luki2@gmail.com>

The helpers use local memory to compute the final hash,
making AV_HASH_MAX_SIZE safe to use.

Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

This fixes usage of AV_TIME_BASE_Q in C++ applications, which
cannot use compound literals directly in their code.
Signed-off-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: NLuca 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: NDerek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

This adds the reversed byte-order version of the ANSI CRC16.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Signed-off-by: NMichael 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: NAnton Khirnov <anton@khirnov.net>

And provide extended coloring capabilities for debugging.
The default colors do not change in 256 more to keep
supporting people using Black on White, White on Black and
Solarized terminals.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

AVOptionRange is not flexible enough to store AV_OPT_TYPE_IMAGE_SIZE
ranges. Current implementation can only store pixel count.
This patch aims to keep backward compatibility and extend
AVOptionRange with possibility to store width/height ranges.
Signed-off-by: NLukasz Marek <lukasz.m.luki@gmail.com>

Signed-off-by: NNedeljko Babic <nbabic@mips.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

av_dynarray_add_nofree function have similar functionality
as existing av_dynarray_add, but it doesn't deallocate memory
on fails.
Signed-off-by: NLukasz Marek <lukasz.m.luki@gmail.com>

Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

Signed-off-by: NLukasz Marek <lukasz.m.luki@gmail.com>

It was never used since it was added and the things it was intended for
are now exported differently.

Signed-off-by: NJames Almer <jamrial@gmail.com>
Signed-off-by: NMichael Niedermayer <michaelni@gmx.at>

Add a function to create a rational
and macros for common values.

Includes a libavcodec utility function to update a frame's side data.