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FFmpeg/libavutil
History
Alan Kelly f4b044bbe3 swscale: Disable avx2 hscale 8to15 on IceLake and below due to Intel Gather Data Sampling mitigation performance loss 
Intel provided a microcode update to mitigate this security
    vulnerability which has a huge negative performance impact on gather
    instructions. This means that hscale 8to15 avx2, which uses gather
    extensively, is no longer faster than SSSE3 on impacted CPUs.

    https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/gather-data-sampling.html

    Broadwell:
    hscale_8_to_15__fs_4_dstW_512_c:                      3379.5 ( 1.00x)
    hscale_8_to_15__fs_4_dstW_512_sse2:                    615.7 ( 5.49x)
    hscale_8_to_15__fs_4_dstW_512_ssse3:                   613.4 ( 5.51x)
    hscale_8_to_15__fs_4_dstW_512_avx2:                    495.7 ( 6.82x)

    Skylake:
    hscale_8_to_15__fs_4_dstW_512_c:                      3411.4 ( 1.00x)
    hscale_8_to_15__fs_4_dstW_512_sse2:                    591.0 ( 5.77x)
    hscale_8_to_15__fs_4_dstW_512_ssse3:                   591.5 ( 5.77x)
    hscale_8_to_15__fs_4_dstW_512_avx2:                   1386.2 ( 2.46x)

    Cascade Lake:
    hscale_8_to_15__fs_4_dstW_512_c:                      3231.3 ( 1.00x)
    hscale_8_to_15__fs_4_dstW_512_sse2:                    517.9 ( 6.24x)
    hscale_8_to_15__fs_4_dstW_512_ssse3:                   521.6 ( 6.19x)
    hscale_8_to_15__fs_4_dstW_512_avx2:                   1775.0 ( 1.82x)

    Sapphire Rapids:
    hscale_8_to_15__fs_4_dstW_512_c:                      1840.0 ( 1.00x)
    hscale_8_to_15__fs_4_dstW_512_sse2:                    287.9 ( 6.39x)
    hscale_8_to_15__fs_4_dstW_512_ssse3:                   293.8 ( 6.26x)
    hscale_8_to_15__fs_4_dstW_512_avx2:                    219.2 ( 8.40x)
2025-09-06 20:57:48 +00:00
..
aarch64
aarch64: increase default alignment for functions and constants
2025-05-19 13:20:51 +02:00
arm
avutil/cpu_internal: Provide ff_getauxval() wrapper for getauxvaul()
2024-09-09 06:20:11 -04:00
loongarch
avutil/cpu_internal: Provide ff_getauxval() wrapper for getauxvaul()
2024-09-09 06:20:11 -04:00
mips
avutil/cpu_internal: Provide ff_getauxval() wrapper for getauxvaul()
2024-09-09 06:20:11 -04:00
ppc
libavutil/ppc: defines involving bit shifts should be unsigned
2024-11-03 22:05:06 -05:00
riscv
avutil/riscv: avoid redefinition of _GNU_SOURCE
2025-08-26 15:08:52 +00:00
tests
avutil/tests/pca: comment out unused code
2025-08-11 19:29:53 +00:00
wasm
all: fix whitespace/new-line issues
2025-08-03 13:48:47 +02:00
x86
swscale: Disable avx2 hscale 8to15 on IceLake and below due to Intel Gather Data Sampling mitigation performance loss
2025-09-06 20:57:48 +00:00
.gitignore
…
adler32.c
…
adler32.h
…
aes_ctr.c
avutil/aes_ctr: simplify incrementing the counter
2025-04-05 20:46:40 -03:00
aes_ctr.h
…
aes_internal.h
lavu/aes: add x86 AESNI optimizations
2025-04-05 20:46:40 -03:00
aes.c
all: fix whitespace/new-line issues
2025-08-03 13:48:47 +02:00
aes.h
…
ambient_viewing_environment.c
avutil/ambient_viewing_environment: set a sane default value for AVRational fields
2024-06-20 17:02:50 -03:00
ambient_viewing_environment.h
…
attributes_internal.h
avutil/attributes_internal: Add EXTERN macro for extern+hidden
2025-03-05 00:24:54 +01:00
attributes.h
lavu: add av_scanf_format() and use it on av_sscanf()
2025-07-22 01:35:01 +02:00
audio_fifo.c
…
audio_fifo.h
…
avassert.h
avutil/avassert: always implement av_assume with av_unreachable
2025-08-14 19:42:13 +00:00
avsscanf.c
avutil/avsscanf: Remove dead code
2024-07-21 17:02:12 +02:00
avstring.c
avutil/avstring: shrink allocation from av_get_token to fit token
2025-07-22 19:56:34 +02:00
avstring.h
lavu: add av_scanf_format() and use it on av_sscanf()
2025-07-22 01:35:01 +02:00
avutil.h
Remove libpostproc
2025-05-07 15:35:47 +02:00
avutilres.rc
…
base64.c
libavutil/base64: Try not to write over the array end
2024-05-13 03:26:57 +02:00
base64.h
…
blowfish.c
…
blowfish.h
…
bprint.c
avutil/bprint: fix av_bprint_strftime with %p format string reporting truncated output
2025-08-31 09:37:59 +02:00
bprint.h
fix "param"s that should be "@param"
2024-03-04 17:45:00 +01:00
bswap.h
lavu/bswap: remove some inline assembler
2024-06-13 21:16:16 +03:00
buffer_internal.h
…
buffer.c
avutil/buffer: Check ff_mutex_init() for failure
2024-07-21 17:02:13 +02:00
buffer.h
…
camellia.c
…
camellia.h
…
cast5.c
…
cast5.h
…
channel_layout.c
avutil/channel_layout: add a 5.1.2 layout using side channels
2025-01-03 10:27:12 -03:00
channel_layout.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
colorspace.h
…
common.h
lavu/common.h: Fix UB in av_clip_uintp2_c()
2024-06-14 14:28:25 +02:00
container_fifo.c
lavc/container_fifo: move to lavu and make public
2024-12-15 14:05:15 +01:00
container_fifo.h
lavc/container_fifo: move to lavu and make public
2024-12-15 14:05:15 +01:00
cpu_internal.h
configure: Add wasm as a fake arch
2024-12-04 16:43:06 +08:00
cpu.c
avutil/cpu: Disable ff_getauxval() on x86
2025-02-02 17:03:20 +01:00
cpu.h
configure: Add wasm as a fake arch
2024-12-04 16:43:06 +08:00
crc.c
…
crc.h
…
csp.c
avutil/csp: Improve enum range comparisons
2025-03-21 04:30:09 +01:00
csp.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
cuda_check.h
…
des.c
…
des.h
…
detection_bbox.c
avutil/common: Don't auto-include mem.h
2024-03-31 00:08:43 +01:00
detection_bbox.h
…
dict.c
avutil/dict: fix memleak in av_dict_set()
2025-04-07 23:38:09 -03:00
dict.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
display.c
…
display.h
…
dovi_meta.c
avutil/dovi_meta: add dolby vision extension blocks
2024-04-03 16:16:25 +02:00
dovi_meta.h
avutil/dovi_meta: document static vs dynamic ext blocks
2024-08-16 11:48:02 +02:00
downmix_info.c
avutil/downmix_info: check for side data allocation success before zeroing it
2025-01-28 15:26:00 -03:00
downmix_info.h
…
dynarray.h
…
emms.h
…
encryption_info.c
…
encryption_info.h
…
error.c
avutil/error: Add HTTP 429 Too Many Requests AVERROR code
2024-04-25 14:13:47 +01:00
error.h
avutil/error: Add HTTP 429 Too Many Requests AVERROR code
2024-04-25 14:13:47 +01:00
eval.c
avutil/log: Set AVClass* in av_expr_eval()
2025-03-08 01:05:47 +01:00
eval.h
apply spelling fixes
2023-11-18 19:55:42 +01:00
executor.c
avutil/executor: Fix stack overflow due to recursive call
2024-07-11 20:26:23 +08:00
executor.h
avutil/executor: Allowing thread_count be zero
2024-06-27 20:54:42 +08:00
ffmath.h
…
fifo.c
avutil: remove deprecated FF_API_FIFO_OLD_API
2024-03-07 08:53:30 -03:00
fifo.h
avutil/fifo, file: Remove unused headers
2024-03-27 17:07:22 +01:00
file_open.c
avutil/file_open: Fix build error with wasi
2024-07-16 22:50:21 +08:00
file_open.h
…
file.c
avutil/file: fix av_file_map file mapping on Windows
2024-12-15 14:02:29 +01:00
file.h
avutil/fifo, file: Remove unused headers
2024-03-27 17:07:22 +01:00
film_grain_params.c
avutil/common: Don't auto-include mem.h
2024-03-31 00:08:43 +01:00
film_grain_params.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
fixed_dsp.c
avutil/common: Don't auto-include mem.h
2024-03-31 00:08:43 +01:00
fixed_dsp.h
configure: Remove av_restrict
2024-03-15 12:51:15 +01:00
float2half.c
…
float2half.h
…
float_dsp.c
avutil/float_dsp: Unavpriv avpriv_scalarproduct_float_c()
2025-03-28 14:33:08 -03:00
float_dsp.h
avutil/float_dsp: Unavpriv avpriv_scalarproduct_float_c()
2025-03-28 14:33:08 -03:00
float_scalarproduct.c
avutil/float_dsp: Unavpriv avpriv_scalarproduct_float_c()
2025-03-28 14:33:08 -03:00
frame.c
avutil/frame: add AVFrame.alpha_mode
2025-09-02 17:05:50 +02:00
frame.h
avutil/frame: add AVFrame.alpha_mode
2025-09-02 17:05:50 +02:00
getenv_utf8.h
…
half2float.c
…
half2float.h
…
hash.c
avutil/hash: Avoid relocations for hash names
2024-03-18 01:48:46 +01:00
hash.h
…
hdr_dynamic_metadata.c
…
hdr_dynamic_metadata.h
fix "@param foo[in/out]" to "@param[in, out] foo"
2024-03-04 17:45:12 +01:00
hdr_dynamic_vivid_metadata.c
…
hdr_dynamic_vivid_metadata.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
hmac.c
avutil/hmac: avoid calling functions through pointer of invalid type
2025-07-22 19:56:34 +02:00
hmac.h
…
hwcontext_amf_internal.h
avutil: add hwcontext_amf.
2025-02-04 00:14:14 +01:00
hwcontext_amf.c
avutil/hwcontext_amf: add device cache size
2025-07-29 23:38:08 +02:00
hwcontext_amf.h
acvodec/amfenc: Enable use of AMF Surface in multiple encoders
2025-06-26 13:48:26 +02:00
hwcontext_cuda_internal.h
all: fix whitespace/new-line issues
2025-08-03 13:48:47 +02:00
hwcontext_cuda.c
avcodec/nvdec: switch to proper pixfmts on next major bump
2025-07-11 17:49:58 +02:00
hwcontext_cuda.h
…
hwcontext_d3d11va.c
avfilter: add scale_d3d11 filter
2025-07-31 21:07:51 +00:00
hwcontext_d3d11va.h
…
hwcontext_d3d12va_internal.h
libavutil: add hwcontext_d3d12va and AV_PIX_FMT_D3D12
2023-12-21 16:15:23 +08:00
hwcontext_d3d12va.c
avcodec/d3d12va_encode: texture array support for HEVC
2025-09-03 11:56:06 +02:00
hwcontext_d3d12va.h
avcodec/d3d12va_encode: texture array support for HEVC
2025-09-03 11:56:06 +02:00
hwcontext_drm.c
avutil/hwcontext_drm: fix mapping when dst format is unset
2025-09-03 20:21:51 -05:00
hwcontext_drm.h
…
hwcontext_dxva2.c
libavutil/hwcontext_{d3d11va, dxva2}: Support Y212/XV36 pixel format
2024-11-05 10:28:03 +08:00
hwcontext_dxva2.h
…
hwcontext_internal.h
avutil/hwcontext: Add ohcodec device and pixel format
2025-07-18 14:44:39 +08:00
hwcontext_mediacodec.c
…
hwcontext_mediacodec.h
…
hwcontext_oh.c
avutil/hwcontext: Add ohcodec device and pixel format
2025-07-18 14:44:39 +08:00
hwcontext_oh.h
avutil/hwcontext: Add ohcodec device and pixel format
2025-07-18 14:44:39 +08:00
hwcontext_opencl.c
avutil/hwcontext: Allocate AVHWFramesCtx jointly with its internals
2024-03-07 08:53:31 -03:00
hwcontext_opencl.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
hwcontext_qsv.c
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
hwcontext_qsv.h
all: fix whitespace/new-line issues
2025-08-03 13:48:47 +02:00
hwcontext_stub.c
…
hwcontext_vaapi.c
lavu/hwcontext_vaapi: drop a redundant check
2025-08-08 12:53:39 +00:00
hwcontext_vaapi.h
…
hwcontext_vdpau.c
avutil/hwcontext: Allocate AVHWFramesCtx jointly with its internals
2024-03-07 08:53:31 -03:00
hwcontext_vdpau.h
…
hwcontext_videotoolbox.c
avutil/hwcontext_videotoolbox: fix unused variable warning
2025-07-07 01:33:18 +02:00
hwcontext_videotoolbox.h
avutil/hwcontext_videotoolbox: Update documentation
2024-07-05 19:13:43 +08:00
hwcontext_vulkan.c
avutil/hwcontext_vulkan: add debug option to avoid host ptr imports
2025-08-20 15:05:41 +00:00
hwcontext_vulkan.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
hwcontext.c
avutil/hwcontext: Add ohcodec device and pixel format
2025-07-18 14:44:39 +08:00
hwcontext.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
iamf.c
avutil/iamf: use AV_OPT_TYPE_UINT
2024-05-04 21:31:33 -03:00
iamf.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
imgutils_internal.h
avutil/internal: Move avpriv_set_systematic_pal2 decl to imgutils_internal.h
2024-03-31 00:08:43 +01:00
imgutils.c
avutil/imgutils: av_image_check_size2() ensure width and height fit in 32bit
2024-07-12 22:16:05 +02:00
imgutils.h
avutil/imgutils: add new function av_image_fill_color()
2023-12-13 18:51:32 +01:00
integer.c
…
integer.h
…
internal.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
intfloat.h
…
intmath.c
…
intmath.h
avutil/intmath: use AV_HAS_BUILTIN to detect builtin availability
2025-06-12 14:17:37 +03:00
intreadwrite.h
avutil/aarch64: add AV_COPY128 and AV_ZERO128 macros
2024-08-26 10:26:59 +02:00
lfg.c
…
lfg.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
libavutil.v
…
libm.h
avutil/libm: Only include intfloat.h when needed
2025-03-22 03:35:28 +01:00
lls.c
lavu/lls: R-V V update_lls
2024-06-01 18:05:58 +03:00
lls.h
lavu/lls: R-V V update_lls
2024-06-01 18:05:58 +03:00
log2_tab.c
…
log.c
lavu/log: fix color for AV_CLASS_CATEGORY_HWDEVICE on non-Win32
2025-08-10 02:24:56 +00:00
log.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
lzo.c
…
lzo.h
…
macos_kperf.c
avutil/macos_kperf: Fix assert which makes kperf failed to run
2024-06-18 15:24:12 +08:00
macos_kperf.h
…
macros.h
…
Makefile
avutil/hwcontext: Add ohcodec device and pixel format
2025-07-18 14:44:39 +08:00
mastering_display_metadata.c
avutil/mastering_display_metadata: set a sane default value for AVRational fields
2024-06-20 17:02:50 -03:00
mastering_display_metadata.h
avutil/mastering_display_metadata: add a new allocator function that returns a size
2024-04-11 11:46:18 -03:00
mathematics.c
…
mathematics.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
md5.c
…
md5.h
…
mem_internal.h
avutil: Fix linking x86 asm constants with Clang in MSVC mode
2025-06-13 11:36:20 +03:00
mem.c
avutil/internal: Move FF_MEMORY_POISON to its only user
2024-03-31 00:08:43 +01:00
mem.h
…
motion_vector.h
…
murmur3.c
…
murmur3.h
…
objc.h
…
opt.c
avutil/opt: also print option names on parse error
2025-08-30 18:46:15 +00:00
opt.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
parseutils.c
avutil/parseutils: do no rely on av_d2q returning higher num/den than allowed in av_parse_video_rate
2024-11-16 20:58:49 +01:00
parseutils.h
…
pca.c
avutil/common: Don't auto-include mem.h
2024-03-31 00:08:43 +01:00
pca.h
…
pixdesc.c
avutil/frame: add AVFrame.alpha_mode
2025-09-02 17:05:50 +02:00
pixdesc.h
avutil/frame: add AVFrame.alpha_mode
2025-09-02 17:05:50 +02:00
pixelutils.c
…
pixelutils.h
…
pixfmt.h
avutil/frame: add AVFrame.alpha_mode
2025-09-02 17:05:50 +02:00
qsort.h
…
random_seed.c
random_seed: Improve behaviour with small timer increments with high precision timers
2025-02-13 11:41:51 +02:00
random_seed.h
…
rational.c
avutil/rational: never return greater num/den than the maximum allowed in av_d2q
2024-11-16 20:58:49 +01:00
rational.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
rc4.c
…
rc4.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
refstruct.c
avutil/refstruct: Remove redundant check
2025-05-22 15:12:54 +02:00
refstruct.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
replaygain.h
…
reverse.c
…
reverse.h
…
ripemd.c
…
ripemd.h
…
samplefmt.c
…
samplefmt.h
…
sfc64.h
avutil/eval: Use even better PRNG
2024-01-16 01:34:57 +01:00
sha512.c
…
sha512.h
…
sha.c
…
sha.h
…
side_data.c
avutil/side_data: add EXIF side data type
2025-08-19 11:26:46 -04:00
side_data.h
avutil/frame: move side data helpers to a new file
2025-03-03 18:10:10 -03:00
slicethread.c
avutil/slicethread: Mark avpriv_slicethread_{create,free} as av_cold
2025-03-26 03:14:41 +01:00
slicethread.h
…
softfloat_ieee754.h
…
softfloat_tables.h
…
softfloat.h
…
spherical.c
lavu/spherical: Add support for Spherical Immersive type
2025-07-31 10:58:36 +02:00
spherical.h
lavu/spherical: Add support for Spherical Immersive type
2025-07-31 10:58:36 +02:00
stereo3d.c
avutil/stereo3d: add a Stereo3D view to signal that the view is unspecified
2024-06-28 13:16:57 -03:00
stereo3d.h
avutil/stereo3d: add a Stereo3D view to signal that the view is unspecified
2024-06-28 13:16:57 -03:00
tablegen.h
…
tdrdi.c
avutil: add an API to handle 3D Reference Displays Information
2025-07-01 22:41:56 +02:00
tdrdi.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
tea.c
…
tea.h
…
thread.h
w32pthreads: add support for setting thread name
2025-08-15 19:54:01 +00:00
threadmessage.c
…
threadmessage.h
…
time_internal.h
…
time.c
…
time.h
…
timecode_internal.c
avutil/timecode: add ff_timecode_set_smpte
2025-03-02 18:43:08 +01:00
timecode_internal.h
avutil/timecode: add ff_timecode_set_smpte
2025-03-02 18:43:08 +01:00
timecode.c
avutil/timecode: add ff_timecode_set_smpte
2025-03-02 18:43:08 +01:00
timecode.h
libavutil/timecode: fix parameter order in documentation
2024-01-14 14:58:57 +01:00
timer.h
lavu: Set default FF_TIMER_UNITS to "ns"
2024-08-05 21:16:26 +03:00
timestamp.c
avutil/timestamp: avoid possible FPE when 0 is passed to av_ts_make_time_string2()
2024-06-30 09:11:44 +02:00
timestamp.h
avutil/timestamp: change precision of av_ts_make_time_string()
2024-03-25 21:30:51 +01:00
tree.c
…
tree.h
…
twofish.c
…
twofish.h
…
tx_double.c
…
tx_float.c
…
tx_int32.c
…
tx_priv.h
…
tx_template.c
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
tx.c
avutil/tx: zero whole array, not only one element
2025-08-07 07:36:33 +00:00
tx.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
utils.c
lavu: deprecate av_opt_set_int_list() and related infrastructure
2024-09-30 09:14:04 +02:00
uuid.c
…
uuid.h
…
version_major.h
…
version.c
lib*/version: Use static_assert for static asserts
2024-03-31 00:08:42 +01:00
version.h
avutil/version: bump minor after recent change
2025-09-03 22:34:40 +00:00
video_enc_params.c
…
video_enc_params.h
avutil/video_enc_params: fix doxy for av_video_enc_params_block()
2023-10-30 10:30:05 -03:00
video_hint.c
…
video_hint.h
all: fix typos found by codespell
2025-08-03 13:48:47 +02:00
vulkan_functions.h
lavc: add an av1_vulkan encoder
2025-08-08 18:29:40 +09:00
vulkan_glslang.c
vulkan_shaderc/glslang: print full shaders on TRACE rather than VERBOSE
2025-04-14 06:10:40 +02:00
vulkan_loader.h
lavc: add an av1_vulkan encoder
2025-08-08 18:29:40 +09:00
vulkan_shaderc.c
vulkan_shaderc/glslang: print full shaders on TRACE rather than VERBOSE
2025-04-14 06:10:40 +02:00
vulkan_spirv.h
lavu/vulkan_spirv: use correct inclusion guards
2024-10-06 06:04:36 +02:00
vulkan.c
vulkan: add support for 16-bit RGGB Bayer pixfmt
2025-08-08 01:06:11 +09:00
vulkan.h
hwcontext_vulkan: use host image copy
2025-06-11 01:20:18 +09:00
wchar_filename.h
avutil/wchar_filename: re-introduce explicit cast of void* to char*
2024-10-27 09:37:46 +01:00
xga_font_data.c
avutil/xga_font_data: add getters to access the shared arrays
2025-07-22 09:47:18 -03:00
xga_font_data.h
avutil/xga_font_data: add getters to access the shared arrays
2025-07-22 09:47:18 -03:00
xtea.c
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xtea.h
…