From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 9503A424DB for ; Thu, 17 Mar 2022 18:59:00 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 7209568AC6D; Thu, 17 Mar 2022 20:58:58 +0200 (EET) Received: from outmail148098.authsmtp.com (outmail148098.authsmtp.com [62.13.148.98]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 8AB5668067F for ; Thu, 17 Mar 2022 20:58:52 +0200 (EET) Received: from mail-c237.authsmtp.com (mail-c237.authsmtp.com [62.13.128.237]) by punt15.authsmtp.com. (8.15.2/8.15.2) with ESMTP id 22HIwpfe082675; Thu, 17 Mar 2022 18:58:51 GMT (envelope-from bavison@riscosopen.org) Received: from rpi2021 (237.63.9.51.dyn.plus.net [51.9.63.237]) (authenticated bits=0) by mail.authsmtp.com (8.15.2/8.15.2) with ESMTPSA id 22HIwmc9057073 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 17 Mar 2022 18:58:49 GMT (envelope-from bavison@riscosopen.org) Received: by rpi2021 (sSMTP sendmail emulation); Thu, 17 Mar 2022 18:58:48 +0000 From: Ben Avison To: ffmpeg-devel@ffmpeg.org Date: Thu, 17 Mar 2022 18:58:13 +0000 Message-Id: <20220317185819.466470-1-bavison@riscosopen.org> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Server-Quench: 4842acd1-a624-11ec-ba2e-8434971169dc X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCd1YggXA1ZfRRob ESQCJDVBUg4iPRpU DBlFKhFVNl8UURhQ KkJXbgASJgRDAnRQ QXkJW1ZWQFx5U2Z9 YQ9RIwBcfENQWQZ0 UktOXVBXFgB3AFID BGZnFUQhfgVDf353 ZghnXXZbEkBycUQs ERpVCDwAZ2N9aWFK A10KJgEBbQtOfRtM bVF+UnpZMitsBgsE NC97Z3dvCH1WNi9S TgwGakwZGBRDNyQ5 DxcaATQqHFYMWyQ0 KQdO X-Authentic-SMTP: 61633632303230.1024:7600 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 51.9.63.237/2525 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. Subject: [FFmpeg-devel] [PATCH 0/6] avcodec/vc1: Arm optimisations X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Ben Avison Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: The VC1 decoder was missing lots of important fast paths for Arm, especially for 64-bit Arm. This submission fills in implementations for all functions where a fast path already existed and the fallback C implementation was taking 1% or more of the runtime, and adds a new fast path to permit vc1_unescape_buffer() to be overridden. I've measured the playback speed on a 1.5 GHz Cortex-A72 (Raspberry Pi 4) using `ffmpeg -i -f null -` for a couple of example streams: Architecture: AArch32 AArch32 AArch64 AArch64 Stream: 1 2 1 2 Before speed: 1.22x 0.82x 1.00x 0.67x After speed: 1.31x 0.98x 1.39x 1.06x Improvement: 7.4% 20% 39% 58% `make fate` passes on both AArch32 and AArch64. Ben Avison (6): avcodec/vc1: Arm 64-bit NEON deblocking filter fast paths avcodec/vc1: Arm 32-bit NEON deblocking filter fast paths avcodec/vc1: Arm 64-bit NEON inverse transform fast paths avcodec/idctdsp: Arm 64-bit NEON block add and clamp fast paths avcodec/blockdsp: Arm 64-bit NEON block clear fast paths avcodec/vc1: Introduce fast path for unescaping bitstream buffer libavcodec/aarch64/Makefile | 6 +- libavcodec/aarch64/blockdsp_init_aarch64.c | 42 + libavcodec/aarch64/blockdsp_neon.S | 43 + libavcodec/aarch64/idctdsp_init_aarch64.c | 26 +- libavcodec/aarch64/idctdsp_neon.S | 130 ++ libavcodec/aarch64/vc1dsp_init_aarch64.c | 93 ++ libavcodec/aarch64/vc1dsp_neon.S | 1552 ++++++++++++++++++++ libavcodec/arm/vc1dsp_init_neon.c | 74 + libavcodec/arm/vc1dsp_neon.S | 761 ++++++++++ libavcodec/blockdsp.c | 2 + libavcodec/blockdsp.h | 1 + libavcodec/vc1dec.c | 20 +- libavcodec/vc1dsp.c | 2 + libavcodec/vc1dsp.h | 3 + 14 files changed, 2736 insertions(+), 19 deletions(-) create mode 100644 libavcodec/aarch64/blockdsp_init_aarch64.c create mode 100644 libavcodec/aarch64/blockdsp_neon.S create mode 100644 libavcodec/aarch64/idctdsp_neon.S create mode 100644 libavcodec/aarch64/vc1dsp_neon.S -- 2.25.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".