From: Wu Jianhua <toqsxw@outlook.com>
To: "ffmpeg-devel@ffmpeg.org" <ffmpeg-devel@ffmpeg.org>
Cc: Stone Chen <chen.stonechen@gmail.com>
Subject: [FFmpeg-devel] 回复: [PATCH v3 1/2][GSoC 2024] libavcodec/x86/vvc: Add AVX2 DMVR SAD functions for VVC
Date: Sat, 18 May 2024 10:50:18 +0000
Message-ID: <OSZP286MB2173ABC03D7967FC0D1EAA3DCAEF2@OSZP286MB2173.JPNP286.PROD.OUTLOOK.COM> (raw)
In-Reply-To: <20240514204019.11022-2-chen.stonechen@gmail.com>
> 发件人: ffmpeg-devel <ffmpeg-devel-bounces@ffmpeg.org> 代表 Stone Chen <chen.stonechen@gmail.com>
> 发送时间: 2024年5月14日 13:40
> 收件人: ffmpeg-devel@ffmpeg.org
> 抄送: Stone Chen
> 主题: [FFmpeg-devel] [PATCH v3 1/2][GSoC 2024] libavcodec/x86/vvc: Add AVX2 DMVR SAD functions for VVC
>
> Implements AVX2 DMVR (decoder-side motion vector refinement) SAD functions. DMVR SAD is only calculated if w >= 8, h >= 8, and w * h > 128. > > To reduce complexity, SAD is only calculated on even rows. This is calculated for all video bitdepths, but the values passed to the function are always > 16bit (even if the original video bitdepth is 8). The AVX2 implementation uses min/max/sub.
>
> Benchmarks ( AMD 7940HS )
> Before:
> BQTerrace_1920x1080_60_10_420_22_RA.vvc | 80.7 |
> Chimera_8bit_1080P_1000_frames.vvc | 158.0 |
> NovosobornayaSquare_1920x1080.bin | 159.7 |
> RitualDance_1920x1080_60_10_420_37_RA.266 | 146.3 |
>
> After:
> BQTerrace_1920x1080_60_10_420_22_RA.vvc | 82.7 |
> Chimera_8bit_1080P_1000_frames.vvc | 167.0 |
> NovosobornayaSquare_1920x1080.bin | 166.3 |
> RitualDance_1920x1080_60_10_420_37_RA.266 | 154.0 |
> ---
LGTM. Thanks for your efforts.
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next prev parent reply other threads:[~2024-05-18 10:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-14 20:40 [FFmpeg-devel] " Stone Chen
2024-05-14 20:40 ` [FFmpeg-devel] [PATCH v3 2/2][GSoC 2024] tests/checkasm: Add check_vvc_sad to vvc_mc.c Stone Chen
2024-05-18 10:50 ` Wu Jianhua [this message]
2024-05-18 13:04 ` [FFmpeg-devel] [PATCH v3 1/2][GSoC 2024] libavcodec/x86/vvc: Add AVX2 DMVR SAD functions for VVC Ronald S. Bultje
2024-05-18 13:12 ` Stone Chen
2024-05-18 15:33 ` Ronald S. Bultje
2024-05-19 14:24 ` Stone Chen
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