Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

And move the resource deallocation in stream_open failure path.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

The name was misleading.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

The structure is not video-specific.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

It does not belong to the stream setup.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

And refactor the code in preparation of the following
patches.
Signed-off-by: NLuca Barbato <lu_zero@gentoo.org>

Now all IO should go through the IO callbacks and be interceptable by
the caller.

Some (de)muxers open additional files beyond the main IO context.
Currently, they call avio_open() directly, which prevents the caller
from using custom IO for such streams.

This commit adds callbacks to AVFormatContext that default to
avio_open2()/avio_close(), but can be overridden by the caller. All
muxers and demuxers using AVIO are switched to using those callbacks
instead of calling avio_open()/avio_close() directly.

(de)muxers that use the URLProtocol layer directly instead of AVIO
remain unconverted for now. This should be fixed in later commits.

Introduced in 0e6c8532.

Some debuggers/profilers use this metadata to determine which function a
given instruction is in; without it they get can confused by local labels
(if you haven't stripped those). On the other hand, some tools are still
confused even with this metadata. e.g. this fixes `gdb`, but not `perf`.

Currently only implemented for ELF.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

The REP_RET workaround is only needed on old AMD cpus, and the labels clutter
up the symbol table and confuse debugging/profiling tools, so use EQU to
create SHN_ABS symbols instead of creating local labels. Furthermore, skip
the workaround completely in functions that definitely won't run on such cpus.

Note that EQU is just creating a local label when using nasm instead of yasm.
This is probably a bug, but at least it doesn't break anything.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

cpuflags is never undefined any more, it's set to 0 instead.

Also fix an incorrect comment.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

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

When allocating stack space with a larger alignment than the known stack
alignment a temporary register is used for storing the stack pointer.
Ensure that this isn't one of the registers used for passing arguments.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

 * Correctly handle FMA instructions with memory operands.
 * Print a warning if FMA instructions are used without the correct cpuflag.
 * Simplify the instantiation code.
 * Clarify documentation.

Only the last operand in FMA3 instructions can be a memory operand. When
converting FMA4 instructions to FMA3 instructions we can utilize the fact
that multiply is a commutative operation and reorder operands if necessary
to ensure that a memory operand is used only as the last operand.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

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

Makes it possible to use them in arithmetic expressions.
Signed-off-by: NAnton Khirnov <anton@khirnov.net>

The parameters in the docs are currently swapped.

This fixes crashes since 243df135.
Signed-off-by: NMartin Storsjö <martin@martin.st>

This option is only used by mpegvideoenc.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc.
It is a very codec-specific options, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This options is only used by huffyuv, ffvhuv, jpegls, mjpeg,
mpegvideoenc, png, utvideo.
It is a very codec-specific options, so deprecate the global variant.
Set proper limits to the maximum allowed values, and update utvideoenc
tests to use the new option name.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

These options are only used by alac and flac.
They are very codec-specific options, so deprecate the global variants.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc and openh264.
It is a very codec-specific option, so deprecate the global variant.

The openh264 option is dropped altogether since it is just a fallback
for -max_nal_size anyway.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpeg2.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by ffv1 and ffvhuff.
It is a very codec-specific option, so deprecate the global variant.
Improve documentation a little.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc, and xvid.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc, x264, xavs, and vpx.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc, x264, and xavs.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by x264 and xavs.
It is a very codec-specific option, so deprecate the global variant.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

These options are only used by mpegvideoenc and vpx.
They are very codec-specific options, so deprecate the global variants.

Add an allowed value to the private options for frame_skip_cmp which
seems to have been forgotten, but perfectly working.

The libvpx frame dropping feature uses one of such option
(frame_skip_threshold) without the other three. For this reason rename
the option to something more consistent with the other libvpx variables.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

This option is only used by mpegvideoenc,
It is a very codec-specific option, so deprecate the global variant.
Set proper limits to the maximum allowed values.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>

The b_frame_strategy option is only used by mpegvideoenc, qsv, x264, and
xavs, while b_sensitivity is only used by mpegvideoenc.

These are very codec-specific options, so deprecate the global variants.
Set proper limits to the maximum allowed values.
Signed-off-by: NVittorio Giovara <vittorio.giovara@gmail.com>