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[79.124.17.100]) by mx.google.com with ESMTP id cw18si6983018edb.520.2021.12.08.18.55.14; Wed, 08 Dec 2021 18:55:15 -0800 (PST) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@foxmail.com header.s=s201512 header.b=OfcKE50Z; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=foxmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5B27C68AE6C; Thu, 9 Dec 2021 04:55:09 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from out162-62-58-211.mail.qq.com (out162-62-58-211.mail.qq.com [162.62.58.211]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 63BFB68A78A for ; Thu, 9 Dec 2021 04:55:01 +0200 (EET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foxmail.com; s=s201512; t=1639018497; bh=IvupBijym2tE+P6PIfhuht1wratr8ur7pTL1y72oiXI=; h=From:To:Cc:Subject:Date; b=OfcKE50Zsal0smYSNAK80FlsIZiWkCkFQ9nMI1w7hWtXW0EmHPEkupKdMTkXVQO7j SclgvHVoXx6rv9oQZ8JiHKU0Fmv008ropXiD9tL1O+CiF2bm1vN1YujZzrnXZ7rpYQ z7M3FfAgLb21pVkKpgLymTi9SbhBs+EGgDsF3RK8= Received: from localhost.localdomain ([42.194.215.216]) by newxmesmtplogicsvrszc10.qq.com (NewEsmtp) with SMTP id DB7B4250; Thu, 09 Dec 2021 10:54:55 +0800 X-QQ-mid: xmsmtpt1639018495tbxixgbv7 Message-ID: X-QQ-XMAILINFO: MOlRQ9LII+xln5RR6XVVb9qNF6lD7I9szFqNQrbSYRS+I5DnbZvYhvGq0TsILn omnKzo2Po9skisOlwsZYKVa2E9EUWZdqj/S5MxSlizXt/ZW0/VNEFEknwVsqsUw9EDuZ9WJGi3Jc 8klQ9IfkI/s+OEevqIQDu3gXZLiGLzdNZs5jWgBKXHaiEj/i1sarjAekRDFx/wmIGDTyI18lBMwI rh9klRNPeytIGWxLXn8klbUDU7FczcxigqdzMDuHBFboQkY6MHaSRPwd+RthAkZb2MGfrGq6+R8e l0CHL8KmnHB5jxGd6rqip1fKgTw538etnR9NLgKSpYJhqTCVQ1OlI9le0Jzxie3Dm9gUE2YU4YFA nL0ThweBVK/SwreFotVApPrE1CX8u3BQs2M0qP2zoJmUPRIWPYiYBqfiamDpUY/z5GkhgLJRrKwg MetSZ0szNszPMVg+3kg/F0m0GLn1xgTW6ia35p8AwtB2uFSUDNDvPQj5GCrGstup/HSi9WeBDxP6 O2qP2craLNM9jWk6FKIrW9JGJ/c4ufz6sa3e1fBChbjoLnxeJnmL/J3Qf+qJfJzqTiTew013LqT1 Xg/RlF4ZprEm6H31gHgY0NXsT+BSV0/oPayIlTHcM4RlMX44LLkvjrSUfcLRoAFskBJ/uYTB52gh f7pnl9GCiaU679sPCiKryT18Tea81dOuBmRKCZ9xnBYUexbei2Yed+3F5hVB+W9dbT2NIMpJGBCz sji51+qZA2/jNRs+XJkYWAYpe3oFw7t7Y1N5RmCkOl5sD9WA76a4ZNu9KGh0+MY1DMCvoXZ72oa9 6537MRx9n3aRsMAsRLDxl3rcjU9+X3iXwfinV0tf8hIz18tM+Zwj6rLXtdATck6t0LwRYRSKyjSE cBJUmsQeX3ozUtv0KSvqK4q3PLhyRe4jZ+YkwSs5cy From: Lingjiang Fang To: vacingfang@tencent.com, ffmpeg-devel@ffmpeg.org Date: Thu, 9 Dec 2021 10:54:34 +0800 X-OQ-MSGID: <20211209025434.9975-1-vacingfang@foxmail.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] accelerate h2645 nalu start code finding 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: Lingjiang Fang Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: HSOxhokQDkm6 --- libavcodec/h2645_parse.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) refer from webrtc h264 parser diff --git a/libavcodec/h2645_parse.c b/libavcodec/h2645_parse.c index 6fbe97ad4a..e372d2a27b 100644 --- a/libavcodec/h2645_parse.c +++ b/libavcodec/h2645_parse.c @@ -330,16 +330,25 @@ static int h264_parse_nal_header(H2645NAL *nal, void *logctx) static int find_next_start_code(const uint8_t *buf, const uint8_t *next_avc) { int i = 0; + const uint8_t *end = NULL; if (buf + 3 >= next_avc) return next_avc - buf; - while (buf + i + 3 < next_avc) { - if (buf[i] == 0 && buf[i + 1] == 0 && buf[i + 2] == 1) - break; - i++; + end = next_avc - 3; + while (buf + i < end) { + if (buf[i + 2] > 1) { + i += 3; + } else if (buf[i + 2] == 1) { + if (buf[i + 1] == 0 && buf[i] == 0) { + break; + } + i += 3; + } else { + ++i; + } } - return i + 3; + return (buf + i + 3 > next_avc)? next_avc - buf : i + 3; } static void alloc_rbsp_buffer(H2645RBSP *rbsp, unsigned int size, int use_ref)