These strings are so short (longest takes 11B) that using
pointers is wasteful. Avoiding them also moves hashdesc
into .rodata (from .data.rel.ro).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Also make initialization/uninitialization behaviour more explicit in the docs,
and make sure we do not leak a channel map on error.
Signed-off-by: Marton Balint <cus@passwd.hu>
Also make use of the av_channel_from_string() function to determine the channel
id. This fixes some parse issues in av_channel_layout_from_string().
Signed-off-by: Marton Balint <cus@passwd.hu>
We lacked tests which supposed to fail, and there are some which should fail
but right now it does not. This will be fixed in a later commit.
Signed-off-by: Marton Balint <cus@passwd.hu>
Deduplicates a lot of code.
Some minor differences (mostly white space and inconsistent use of quotes) are
expected in the fate tests, there was no point aiming for exactly the same
formatting.
Signed-off-by: Marton Balint <cus@passwd.hu>
All versions of MSVC that support C11 (namely >= v19.27)
also support the restrict keyword, therefore av_restrict
is no longer necessary since 75697836b1.
Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Native access is from the code that declared the options, foreign access
is from code that is using the options. Forbid foreign access to
AVOption.offset/default_val, for which there is no good reason, and
which should allow us more freedom in extending their semantics in a
compatible way.
Replace the opt_size() function, currently only called from
av_opt_copy(), with
* a constant array of element sizes
* a function that signals whether an option type is POD (i.e.
memcpyable) or not
Will be useful in following commits.
This is possible because the lifetime of these structures coincide.
It has the advantage of allowing to remove AVHWFramesInternal
from the public header; given that AVHWFramesInternal.priv is no more,
most accesses to AVHWFramesInternal are no more; indeed, the only
field accessed of it outside of hwcontext.c is the internal frame pool,
making this commit very simple.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is no longer used by any hwcontext, as they all allocate
their private data together with their public data and access
it via AVHWFramesContext.hwctx.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to D3D12VAFramesContext as one no longer has to
go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of these structures coincide.
It has the advantage of allowing to remove the AVHWDeviceInternal
from the public header; given that AVHWDeviceInternal.priv is no more,
all accesses to it happen in hwcontext.c, so that this commit moves
the joint structure there.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
It is no longer used by any hwcontext, as they all allocate
their private data together with their public data and access
it via AVHWDeviceContext.hwctx.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to D3D12VADevicePriv as one no longer has to
go through AVHWDeviceInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to VTFramesContext as one no longer has to
go through AVHWFramesInternal.
Tested-by: Jan Ekström <jeebjp@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to QSVFramesContext as one no longer has to
go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to QSVDeviceContext as one no longer has to
go through AVHWDeviceInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to D3D11VAFramesContext as one no longer has to
go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to DXVA2FramesContext as one no longer has to
go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Use AVHWFramesContext.hwctx instead.
This simplifies access to VDPAUFramesContext as one no longer has
to go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to VDPAUDeviceContext as one no longer has to
go through AVHWDeviceInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This makes the code much simpler (especially for adding support
for other instruction set extensions), avoids needing inline
assembly for this feature, and generally is more of the canonical
way to do this.
The CPU feature detection was added in
493fcde50a, using HWCAP_CPUID.
The argument for using that, was that HWCAP_CPUID was added much
earlier in the kernel (in Linux v4.11), while the HWCAP flags for
individual features always come later. This allows detecting support
for new CPU extensions before the kernel exposes information about
them via hwcap flags.
However in practice, there's probably quite little advantage in this.
E.g. HWCAP2_I8MM was added in Linux v5.10 - long after HWCAP_CPUID,
but there's probably very little practical cases where one would
run a kernel older than that on a CPU that supports those instructions.
Additionally, we provide our own definitions of the flag values to
check (as they are fixed constants anyway), with names not conflicting
with the ones from system headers. This reduces the number of ifdefs
needed, and allows detecting those features even if building with
userland headers that are lacking the definitions of those flags.
Also, slightly older versions of QEMU, e.g. 6.2 in Ubuntu 22.04,
do expose support for these features via HWCAP flags, but the
emulated cpuid registers are missing the bits for exposing e.g. I8MM.
(This issue is fixed in later versions of QEMU though.)
Signed-off-by: Martin Storsjö <martin@martin.st>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to OpenCLFramesContext as one no longer has to
go through AVHWFramesInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This is possible because the lifetime of both coincide.
Besides reducing the number of allocations this also simplifies
access to OpenCLDeviceContext as one no longer has to
go through AVHWDeviceInternal.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To do so, concatenate all the names together to one big string
name1\0name2\0....lastname\0\0. This avoids the pointer in
the FunctionLoadInfo structure and thereby moves vk_load_info
into .rodata (and makes it smaller by 888B).
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Andreas Rheinhardt
Henrik Gramner
Marton Balint
Anton Khirnov
James Almer
Andrew Sayers
Martin Storsjö