It is possible to avoid the factors array for the power-of-two
tables for which said array is unused by using a different
structure for initialization for power-of-two tables than for
non-power-of-two-tables. This saves 3*15*16B from .data.
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Up until now, av_aes_init() uses a->round_key[0].u8 + t
as dst of memcpy where it is intended for t to greater
than 16 (u8 is an uint8_t[16]); given that round_key itself
is an array, it is actually intended for the dst to be
in a latter round_key member. To do this properly,
just cast a->round_key to unsigned char*.
This fixes the srtp, aes, aes_ctr, mov-3elist-encrypted,
mov-frag-encrypted and mov-tenc-only-encrypted
FATE-tests with (Clang-)UBSan.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
The AES code uses av_aes_block, a union consisting of
uint64_t[2], uint32_t[4], uint8_t[4][4] and uint8_t[16].
subshift() performs byte-wise manipulations of two av_aes_blocks,
but when encrypting, it does so with a shift of two bytes;
more precisely, it uses
"av_aes_block *s1 = (av_aes_block *) (s0[0].u8 - s)"
and lateron uses the uint8_t[16] member to access s0.
Yet av_aes_block requires to be suitably aligned for
the uint64_t[2] member, which s0[0].u8 - 2 is certainly
not. This is in violation of 6.3.2.3 (7) of C11. UBSan
reports this in the aes_ctr, mov-3elist-encrypted,
mov-frag-encrypted, mov-tenc-only-encrypted and srtp
tests.
Furthermore, there is another issue here: The pointer points
outside of s0; this works, because all the accesses lateron
use an index >= 3. (Clang-)UBSan reports this as
"runtime error: index -2 out of bounds for type 'uint8_t[16]'".
This commit fixes both of these issues: The latter issue
is fixed by applying an offset of "+ 3" during the cast
and subtracting this from the indices used lateron.
The former issue is solved by not casting to av_aes_block*
at all; instead simply cast to unsigned char*.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Separate the blocks to make the grouping easier to grasp,
add the file properly to the group and fix the file description
incorrectly used as filename, fixing the following doxy warning:
warning: the name 'Colorspace' supplied as the argument in
the \file statement is not an input file
Make it a bit easier to grasp the grouping when not
unnecessarily splitting comment blocks.
Additionally do not try to add lavu_video_stereo3d to itself, resolving
the following doxy warning:
warning: Refusing to add group lavu_video_stereo3d to itself
Make it a bit easier to grasp the grouping when not
unnecessarily splitting comment blocks.
Additionally do not try to add lavu_video_spherical to itself, resolving
the following doxy warning:
warning: Refusing to add group lavu_video_spherical to itself
Make it a bit easier to grasp the grouping when not
unnecessarily splitting comment blocks.
Additionally do not try to add lavu_video_display to itself, resolving
the following doxy warning:
warning: Refusing to add group lavu_video_display to itself
VSETVLI xd, x0, ...' has rather nonobvious semantics:
- If xd is x0, then it preserves the current vector length.
- If xd is not x0, it sets the vector length to the supported maximum.
Also somewhat confusingly, while VMV.X.S always does its thing
regardless of the selected vector length, VMV.S.X does _nothing_ if the
selected vector length is zero.
So the current code breaks fails to initialise the accumulator if we
are unlucky to have a selected vector length of zero on entry. Fix it
by forcing the vector length to one.
Add an AV_PIX_FMT_NE macro for RGB32FBE/RGB32FLE and also one for
RGBA32FBE/RGBA32FLE for packed 32-bit float RGB samples, and also
packed 32-bit float RGBA samples, respectively.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Leo Izen <leo.izen@gmail.com>
Currently it is done in several different ways, which
might cause needless dependencies or in case of
tx_float_neon.S is incorrect.
Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
GCC 4.0 not only added a visibility attribute, but also
a pragma to set it for a whole region of code.*
This commit exposes this via macros.
*: See https://gcc.gnu.org/gcc-4.0/changes.html
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
P012, Y212 and XV36 are used for 12bit content in FFmpeg VAAPI, so
these formats should be used in FFmpeg QSV too, however the SDK only
declares support for P016, Y216 and Y416. So this commit fudged mappings
between AV_PIX_FMT_P012 and MFX_FOURCC_P016, AV_PIX_FMT_Y212 and
MFX_FOURCC_Y216, AV_PIX_FMT_XV36 and MFX_FOURCC_Y416.
Signed-off-by: Fei Wang <fei.w.wang@intel.com>
Signed-off-by: Wenbin Chen <wenbin.chen@intel.com>
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
XV30 is used for 10bit 4:4:4 content in FFmpeg VAAPI, so XV30 should be
used for 10bit 4:4:4 content in FFmpeg QSV too because QSV is based on
VAAPI on Linux. However the SDK only declares support for Y410 but does
nothing with the alpha in Y410, so this commit fudged a mapping between
AV_PIX_FMT_XV30 and MFX_FOURCC_Y410.
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
We can't get Shift from bit depth for some formats in the SDK. For
example, bit depth is 10, however Shift is 0 for Y410 (XV30 in FFmpeg).
In order to support these formats in the next commits, this patch
specified Shift for each format
Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
On most cases, the vector type (VTYPE) for the RISC-V Vector extension
is supplied as an immediate value, with either of the VSETVLI or
VSETIVLI instructions. There is however a third instruction VSETVL
which takes the vector type from a general purpose register. That is so
the type can be selected at run-time.
This introduces a macro to load a (valid) vector type into a register.
The syntax follows that of VSETVLI and VSETIVLI, with element size,
group multiplier, then tail and mask policies.
Unfortunately, it is common, and will remain so, that the Bit
manipulations are not enabled at compilation time. This is an official
policy for Debian ports in general (though they do not support RISC-V
officially as of yet) to stick to the minimal target baseline, which
does not include the B extension or even its Zbb subset.
For inline helpers (CPOP, REV8), compiler builtins (CTZ, CLZ) or
even plain C code (MIN, MAX, MINU, MAXU), run-time detection seems
impractical. But at least it can work for the byte-swap DSP functions.
The butterflies_fixed function pointer declaration specifies av_restrict
for the first two pointer arguments. So the corresponding function
definitions should honor this declaration.
MSVC emits warning C4113 for this.
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Namely to lavu/tests/pixelutils.c. This way, this function will
not be included into actual binaries any more.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Instead use av_pix_fmt_desc_next(). It is still possible
to check its return values by comparing it with the
(currently) expected values and the code does so.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
ff_check_pixfmt_descriptors() was added in commit
20e99a9c10. At this time,
the values of enum AVPixelFormat were not contiguous;
instead there was a jump from 111 to 291 (or from 115
to 295 depending upon AV_PIX_FMT_ABI_GIT_MASTER).
ff_check_pixfmt_descriptors() accounts for this
by skipping empty descriptors. Yet this issue no longer
exists: There are no holes.
The check for said holes makes GCC believe that the name
can be NULL; because it is used as argument corresponding to
%s in a log statement, it therefore emits a warning
(since d75c4693fe). Therefore
this commit simply removes these checks.
Also move the checks for name before the log statement.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Don't place it as doxy specific for the order field, and generalize it both to
also cover already defined orders and to not make it seem like the user is
required to handle a layout they don't fully support or understand.
Signed-off-by: James Almer <jamrial@gmail.com>
RVV defines a total of 12 different extensions, including:
- 5 different instruction subsets:
- Zve32x: 8-, 16- and 32-bit integers,
- Zve32f: Zve32x plus single precision floats,
- Zve64x: Zve32x plus 64-bit integers,
- Zve64f: Zve32f plus Zve64x,
- Zve64d: Zve64f plus double precision floats.
- 6 different vector lengths:
- Zvl32b (embedded only),
- Zvl64b (embedded only),
- Zvl128b,
- Zvl256b,
- Zvl512b,
- Zvl1024b,
- and the V extension proper: equivalent to Zve64f and Zvl128b.
In total, there are 6 different possible sets of supported instructions
(including the empty set), but for convenience we allocate one bit for
each type sets: up-to-32-bit ints (RVV_I32), floats (RVV_F32),
64-bit ints (RVV_I64) and doubles (RVV_F64).
Whence the vector size is needed, it can be retrieved by reading the
unprivileged read-only vlenb CSR. This should probably be a separate
helper macro if needed at a later point.
This introduces compile-time and run-time CPU detection on RISC-V. In
practice, I doubt that FFmpeg will ever see a RISC-V CPU without all of
I, F and D extensions, and if it does, it probably won't have run-time
detection. So the flags are essentially always set.
But as things stand, checkasm wants them that way. Compare the ARMV8
flag on AArch64. We are nowhere near running short on CPU flag bits.
They are intended as replacements for avcodec_enum_to_chroma_pos()
and avcodec_chroma_pos_to_enum().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
To support non-aligned buffers during the post-transform step, just iterate
backwards over the array.
This allows using the 15xN-point FFT, with which the speed is 2.1 times
faster than our old libavcodec implementation.
~4x faster than the C version.
The shuffles in the 15pt dim1 are seriously expensive. Not happy with it,
but I'm contempt.
Can be easily converted to pure AVX by removing all vpermpd/vpermps
instructions.
In case new orders are added in the future, existing library users can still
use the layout simply by ignoring everything but the channel count in it, so
make this explicit.
Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: James Almer <jamrial@gmail.com>
Up until now, using NULL as key in av_dict_get() on a non-empty
AVDictionary would crash; using NULL as key in av_dict_set()
would also crash for a non-empty AVDictionary unless AV_DICT_MULTIKEY
was set; in case the dictionary was initially empty or AV_DICT_MULTIKEY
was set, it was even possible for av_dict_set() to succeed when
adding a NULL key, namely when one uses a value != NULL and
the AV_DICT_DONT_STRDUP_VAL flag. Using av_dict_get() on such
an AVDictionary will usually lead to crashes, though.
Fix this by actually checking for key in both functions; error out
if they are NULL.
While just at it, also stop relying on av_strdup(NULL) to return NULL
in av_dict_set().
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Since introducing the various packed formats used by VAAPI (and p012),
we've noticed that there's actually a gap in how
av_find_best_pix_fmt_of_2 works. It doesn't actually assign any value
to having the same bit depth as the source format, when comparing
against formats with a higher bit depth. This usually doesn't matter,
because av_get_padded_bits_per_pixel() will account for it.
However, as many of these formats use padding internally, we find that
av_get_padded_bits_per_pixel() actually returns the same value for the
10 bit, 12 bit, 16 bit flavours, etc. In these tied situations, we end
up just picking the first of the two provided formats, even if the
second one should be preferred because it matches the actual bit depth.
This bug already existed if you tried to compare yuv420p10 against p016
and p010, for example, but it simply hadn't come up before so we never
noticed.
But now, we actually got a situation in the VAAPI VP9 decoder where it
offers both p010 and p012 because Profile 3 could be either depth and
ends up picking p012 for 10 bit content due to the ordering of the
testing.
In addition, in the process of testing the fix, I realised we have the
same gap when it comes to chroma subsampling - we do not favour a
format that has exactly the same subsampling vs one with less
subsampling when all else is equal.
To fix this, I'm introducing a small score penalty if the bit depth or
subsampling doesn't exactly match the source format. This will break
the tie in favour of the format with the exact match, but not offset
any of the other scoring penalties we already have.
I have added a set of tests around these formats which will fail
without this fix.
Andreas Rheinhardt
Anton Khirnov
Carl Eugen Hoyos
Marvin Scholz
Rémi Denis-Courmont
Leo Izen
Reimar Döffinger
Fei Wang
Haihao Xiang
Lynne
Johannes Kauffmann
James Almer
Paul B Mahol
Philip Langdale