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ffmpeg/tests/fate
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Jun Zhao 0886e50c6b lavc/hevc: add aarch64 neon for 8-bit dequant 
Implement NEON optimization for HEVC dequant at 8-bit depth.

The NEON implementation uses srshr (Signed Rounding Shift Right) which
does both the add with offset and right shift in a single instruction.

Optimization details:
- 4x4 (16 coeffs): Single load-process-store sequence
- 8x8 (64 coeffs): Fully unrolled, no loop overhead
- 16x16 (256 coeffs): Pipelined load/compute/store to hide memory latency
- 32x32 (1024 coeffs): Pipelined with all available NEON registers

Performance benchmark on Apple M4:
./tests/checkasm/checkasm --test=hevc_dequant --bench
hevc_dequant_4x4_8_c:                                   11.3 ( 1.00x)
hevc_dequant_4x4_8_neon:                                 6.3 ( 1.78x)

hevc_dequant_8x8_8_c:                                   33.9 ( 1.00x)
hevc_dequant_8x8_8_neon:                                 6.6 ( 5.11x)

hevc_dequant_16x16_8_c:                                153.8 ( 1.00x)
hevc_dequant_16x16_8_neon:                               9.0 (17.02x)

hevc_dequant_32x32_8_c:                                 78.1 ( 1.00x)
hevc_dequant_32x32_8_neon:                              31.9 ( 2.45x)

Note on Performance Anomaly:
The observation that hevc_dequant_32x32_8_c is faster than 16x16 (78.1 vs 153.8)
is due to Clang auto-vectorizing only for sizes >= 32x32.
Compiler: Apple clang version 17.0.0 (clang-1700.6.3.2)

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
2026-01-25 06:55:26 +00:00
..
aac.mak fate/all: fix missing some mov demuxer dependencies 2025-07-05 21:10:49 +02:00
ac3.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
acodec.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
adpcm.mak tests/fate/audio: Sanyo LD-ADPCM test case 2025-08-04 08:01:24 +00:00
alac.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
als.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
amrnb.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
amrwb.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
api.mak tests/fate/api: fix fate-lavf-flv test 2025-10-25 11:11:41 +02:00
apng.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
apv.mak fate: Add test for APV 400-10 profile 2025-05-13 19:38:08 +01:00
atrac.mak avcodec/atrac3: fix inconsistent band num calculation 2025-08-29 12:29:52 +00:00
audio.mak tests/fate/audio: G.728 test case 2025-08-04 08:01:24 +00:00
av1.mak avcodec/libaom: Add test for HDR10+ metadata support 2025-09-02 16:05:45 +02:00
bmp.mak fate/bmp: Fix test requirements 2022-04-28 02:39:37 +02:00
build.mak Merge commit 'db869f4ea4' 2017-10-11 19:02:04 -03:00
caf.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
canopus.mak fate/canopus: Fix test requirements 2022-05-03 04:18:05 +02:00
cbs.mak tests/fate/cbs: add a test for gray apv 2025-08-13 11:42:50 -03:00
cdxl.mak fate/cdxl: Fix test requirements 2022-04-28 02:39:37 +02:00
checkasm.mak lavc/hevc: add aarch64 neon for 8-bit dequant 2026-01-25 06:55:26 +00:00
concatdec.mak fate/all: add missing dependencies for extradata bsf 2025-07-05 21:10:43 +02:00
cover-art.mak fate/all: add missing file protocol dependencies 2025-07-05 21:10:49 +02:00
dca.mak tests/dca: remove usage of deprecated request_channel_layout option 2023-12-28 15:31:50 -03:00
demux.mak tests/fate/demux: Fix dependencies of jxs-concat-demux test 2026-01-03 01:27:53 +01:00
dfa.mak fate/dfa: Fix test requirements 2022-04-28 02:39:37 +02:00
dnxhd.mak fate/dnxhd: Fix test requirements 2022-05-03 04:18:05 +02:00
dpcm.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
dvvideo.mak lavc/dvdec: export bitrate 2023-07-07 12:12:52 +02:00
ea.mak fate/ea: Fix test requirements 2022-05-03 04:18:05 +02:00
enc_external.mak fate/all: switch-fix mov muxer dependency to mp4 muxer dependency 2025-07-05 21:10:44 +02:00
exif.mak
ffmpeg.mak fate/ffmpeg: remove comparison against ref from fix_sub_duration_heartbeat 2025-12-11 22:48:26 +02:00
ffprobe.mak all: fix whitespace/new-line issues 2025-08-03 13:48:47 +02:00
fifo-muxer.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
filter-audio.mak fate/filter-audio: add amerge layout_mode test 2025-12-07 19:36:49 +00:00
filter-video.mak avfilter/vf_drawvg: values from the p() function can be used as colors. 2026-01-04 13:42:20 +00:00
fits.mak fate/all: fix multiple dependencies 2025-07-05 21:10:48 +02:00
flac.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
flvenc.mak fate/all: add missing dependencies for extradata bsf 2025-07-05 21:10:43 +02:00
gapless.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
gif.mak fate/all: fix multiple dependencies 2025-07-05 21:10:48 +02:00
h264.mak tests/fate/cbs: move redundant_pps tests to the proper location 2025-08-13 11:36:22 -03:00
hap.mak fate/hap: Fix test requirements 2022-05-03 04:18:06 +02:00
hevc.mak tests/fate/hevc: add a mv-hevc sample using long term ref 2025-11-10 12:22:05 +08:00
hlsenc.mak tests/fate/hlsenc: add testcase of hls fragment mp4 named cmfa 2025-08-05 11:47:11 +00:00
hw.mak tests: Add EXESUF to program calls. 2019-04-19 01:11:39 +02:00
iamf.mak tests/fate/iamf: add tests for Projection mode ambisonic Audio Elements 2025-12-29 12:02:53 -03:00
id3v2.mak tests/fate/id3v2.mak: Use run wrapper in fate-id3v2-invalid-tags 2025-12-22 22:34:48 +00:00
image.mak tests/fate/image: add Exif rotation metadata tests 2025-09-17 02:17:09 +00:00
imf.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
indeo.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
jpeg2000.mak fate/jpeg2000dec: add support for p0_10.j2k 2024-06-24 08:50:59 -07:00
jxl.mak fate/jpegxl: add multiframe permuted TOC image parser test 2023-12-15 11:52:43 -05:00
lavf-audio.mak all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
lavf-container.mak fate/lavf-container: add test for APV in MP4 2025-07-18 14:55:34 -03:00
lavf-image.mak Revert "tests/fate: disable compression for zlib-based codecs" 2024-10-16 17:38:57 -03:00
lavf-image2pipe.mak fate: add QOI/XBM/XWD image2pipe tests 2022-12-03 19:38:11 +01:00
lavf-video.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
libavcodec.mak configure: add celp_math component 2025-06-17 16:39:36 +10:00
libavdevice.mak tests: Move all test programs to a subdirectory 2016-05-13 14:55:56 +02:00
libavformat.mak fate/all: fix multiple dependencies 2025-07-05 21:10:48 +02:00
libavutil.mak avutil/frame: add helper for adding side data to array 2024-03-20 19:14:02 +02:00
libswresample.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
libswscale.mak tests/fate: add fate-sws-ops-list test 2025-12-08 16:58:53 +00:00
lossless-audio.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
lossless-video.mak tests/fate: replace deprecated -vsync with -fps_mode 2023-11-14 18:18:26 +01:00
matroska.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
microsoft.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
monkeysaudio.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
mov.mak ffprobe: Include the RFC 4281 "mime codec string" in show_stream output 2025-12-12 18:40:01 +02:00
mp3.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
mpc.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
mpeg4.mak fate/mpeg4: fix multiple dependencies 2025-07-05 21:10:47 +02:00
mpegps.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
mpegts.mak tests/Makefile: Make DEMDEC etc. auxiliary functions more flexible 2022-04-28 02:39:37 +02:00
mxf.mak fftools/ffprobe: Make pix_fmt output bitexact 2025-03-30 08:24:39 +02:00
ogg-flac.mak Revert "Re-initialize stream on new metadata." 2025-11-10 14:03:43 +02:00
ogg-opus.mak Revert "Re-initialize stream on new metadata." 2025-11-10 14:03:43 +02:00
ogg-vorbis.mak Revert "Re-initialize stream on new metadata." 2025-11-10 14:03:43 +02:00
oma.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
opus.mak fate/opus: add silk LBRR test (refs #9890) 2022-10-04 11:54:57 +02:00
pcm.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
pixfmt.mak avfilter/vsrc_testsrc: add support for YUV444P1{0,2}MSB to yuvtestsrc 2025-10-28 19:16:58 +00:00
pixlet.mak fate/pixlet: Fix test requirements 2022-05-03 04:18:06 +02:00
probe.mak tests/fate/probe: add test for dts in wav 2025-05-16 20:43:58 +02:00
prores.mak tests/fate/prores: add a probe test 2025-09-16 15:42:03 -03:00
qoa.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
qt.mak tests/fate/qt: Use passthrough fps_mode for svq3-watermark 2025-05-21 03:10:52 +02:00
qtrle.mak fate/qtrle: Fix test requirements 2022-05-03 04:18:06 +02:00
real.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
screen.mak tests/fate/screen: Add test for skipping cursor with FIC 2025-07-03 19:42:28 +02:00
seek.mak fate/seek: fix missing mpeg4video parser dependency 2025-07-05 21:10:50 +02:00
segafilm.mak fate/segafilm: Add tests for segafilm (de)muxer 2022-09-20 18:32:28 +02:00
segment.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
source-check.sh tests/fate/source-check: Relax BSD licence check 2024-05-27 19:04:09 +02:00
source.mak
spdif.mak all: fix typos found by codespell 2025-08-03 13:48:47 +02:00
speedhq.mak fate/speedhq: Fix test requirements 2022-04-28 02:39:37 +02:00
subtitles.mak avformat/mccenc: use Lavf version string instead of FFmpeg 2025-10-06 11:51:50 -03:00
truehd.mak tests/truehd: remove usage of deprecated request_channel_layout option 2023-12-28 15:31:36 -03:00
utvideo.mak fate/utvideo: Fix test requirements 2022-04-28 02:39:37 +02:00
vbn.mak fate/vbn, tests/fate-run: Delete intermediate VBN-files after tests 2022-05-03 04:18:05 +02:00
vcodec.mak fate/vcodec: Test median prediction in ffvhuff,huffyuv 2025-12-14 10:13:29 +01:00
video.mak tests/fate/video: LEAD MCMP test case 2025-08-04 08:01:24 +00:00
voice.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
vorbis.mak fate/vorbis: fix multiple dependencies 2025-07-05 21:10:45 +02:00
vpx.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
vqf.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
vvc.mak fate/vvc: add vvc-conformance-FIELD_A_4 2025-08-08 16:55:12 +00:00
wavpack.mak fate/all: add missing file protocol dependencies 2025-07-05 21:10:49 +02:00
webm-dash-manifest.mak fate/vpx: Move webm-dash-manifest tests to a new file 2022-05-03 04:18:06 +02:00
wma.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00
xvid.mak fate/all: add missing crc/framecrc/md5/framemd5/pipe dependencies 2025-07-05 21:10:49 +02:00