From patchwork Fri Feb 5 19:11:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 25456 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 581ED44B3F5 for ; Fri, 5 Feb 2021 21:18:34 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 36C29687FFC; Fri, 5 Feb 2021 21:18:34 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe01-2.mx.upcmail.net (vie01a-dmta-pe01-2.mx.upcmail.net [62.179.121.155]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 4547C680C9A for ; Fri, 5 Feb 2021 21:18:27 +0200 (EET) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe01.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1l86Wv-0006ji-0Q for ffmpeg-devel@ffmpeg.org; Fri, 05 Feb 2021 20:12:33 +0100 Received: from localhost ([213.47.68.29]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id 86VxlZ3RMljeH86VxlwZsD; Fri, 05 Feb 2021 20:11:33 +0100 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.68.29 X-CNFS-Analysis: v=2.3 cv=BoHjPrf5 c=1 sm=1 tr=0 a=2hcxjKEKjp0CzLx6oWAm4g==:117 a=2hcxjKEKjp0CzLx6oWAm4g==:17 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=EYIcXbVYE2Qz3ZaiImwA:9 a=pHzHmUro8NiASowvMSCR:22 a=Ew2E2A-JSTLzCXPT_086:22 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 5 Feb 2021 20:11:31 +0100 Message-Id: <20210205191132.6027-2-michael@niedermayer.cc> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210205191132.6027-1-michael@niedermayer.cc> References: <20210205191132.6027-1-michael@niedermayer.cc> X-CMAE-Envelope: MS4wfBNruSQgkLVn6fgB57kn88CRBV5NgmxaphFFt23txxa2WpDHBxBX1szJz+l1kPk2vC0YKdWW1AuYSysVS4S9wu1fBTUaYQTf2Jm8jtBxf1VVypPASFG6 U7YjgT10xqpyHg0I6LtzUxtebp28S492YcoHJlho9uhJ64NltUhpNh9m Subject: [FFmpeg-devel] [PATCH 2/3] Support size = 1 and size = 0 special cases in probing X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 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 MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Michael Niedermayer --- libavformat/mov.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavformat/mov.c b/libavformat/mov.c index 9406e42f49..70f76caff5 100644 --- a/libavformat/mov.c +++ b/libavformat/mov.c @@ -7113,6 +7113,11 @@ static int mov_probe(const AVProbeData *p) if ((offset + 8) > (unsigned int)p->buf_size) break; size = AV_RB32(p->buf + offset); + if (size == 1 && offset + 16 > (unsigned int)p->buf_size) { + size = AV_RB64(p->buf+offset + 8); + } else if (size == 0) { + size = p->buf_size - offset; + } tag = AV_RL32(p->buf + offset + 4); switch(tag) { /* check for obvious tags */