From patchwork Fri Jun 7 21:56:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 13456 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 2ACC8447E5F for ; Sat, 8 Jun 2019 00:57:54 +0300 (EEST) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 19B8668AA33; Sat, 8 Jun 2019 00:57:54 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from vie01a-dmta-pe06-1.mx.upcmail.net (vie01a-dmta-pe06-1.mx.upcmail.net [84.116.36.14]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 801F568A9F3 for ; Sat, 8 Jun 2019 00:57:47 +0300 (EEST) Received: from [172.31.216.235] (helo=vie01a-pemc-psmtp-pe12.mail.upcmail.net) by vie01a-dmta-pe06.mx.upcmail.net with esmtp (Exim 4.92) (envelope-from ) id 1hZMrr-0009Nq-3R for ffmpeg-devel@ffmpeg.org; Fri, 07 Jun 2019 23:57:47 +0200 Received: from localhost ([213.47.41.20]) by vie01a-pemc-psmtp-pe12.mail.upcmail.net with ESMTP id ZMqthg2Fm5D5NZMqthLyTd; Fri, 07 Jun 2019 23:56:47 +0200 X-Env-Mailfrom: michael@niedermayer.cc X-Env-Rcptto: ffmpeg-devel@ffmpeg.org X-SourceIP: 213.47.41.20 X-CNFS-Analysis: v=2.3 cv=bu8y+3Si c=1 sm=1 tr=0 a=I1eytVlZLDX1BM2VTtTtSw==:117 a=I1eytVlZLDX1BM2VTtTtSw==:17 a=jpOVt7BSZ2e4Z31A5e1TngXxSK0=:19 a=MKtGQD3n3ToA:10 a=1oJP67jkp3AA:10 a=GEAsPZ9sns4A:10 a=ZZnuYtJkoWoA:10 a=VmHtmPKPZehB-AmD3DEA:9 a=ODM8OcCYzN4A:10 a=fJJoJPkrUeEA:10 a=D7I79eYmwNYA:10 a=tzUwfwlpluQA:10 From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Fri, 7 Jun 2019 23:56:19 +0200 Message-Id: <20190607215619.20992-3-michael@niedermayer.cc> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190607215619.20992-1-michael@niedermayer.cc> References: <20190607215619.20992-1-michael@niedermayer.cc> MIME-Version: 1.0 X-CMAE-Envelope: MS4wfJbg6yq8ZfLsLMIS4rT6AGrlLtitvTL7rgDpjtyrrEt35q7yayKAmZsIEuLuFlF0Nwk3L+wRE4qFRn2Y8/l0jSvQUwNdwNvYgv/pafw70OtwoRQnjYzt 2WO1ALZUxwXArs4g9nFbnKCqnbVf0ZXHMKsrHDniSnqetvIO0Kwq9dLl Subject: [FFmpeg-devel] [PATCH 3/3] avformat/vividas: reduce keybits to require half the space 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Michael Niedermayer --- libavformat/vividas.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/libavformat/vividas.c b/libavformat/vividas.c index 5e303b9c52..72f2093d13 100644 --- a/libavformat/vividas.c +++ b/libavformat/vividas.c @@ -78,11 +78,11 @@ static int viv_probe(const AVProbeData *p) return AVPROBE_SCORE_MAX; } -static const unsigned short keybits[32] = { - 163, 416, 893, 82, 223, 572, 1137, 430, - 659, 1104, 13, 626, 695, 972, 1465, 686, - 843, 1216, 317, 1122, 1383, 92, 513, 1158, - 1243, 48, 573, 1306, 1495, 396, 1009, 350, +static const uint8_t keybits[32] = { + 20, 52, 111, 10, 27, 71, 142, 53, + 82, 138, 1, 78, 86, 121, 183, 85, +105, 152, 39, 140, 172, 11, 64, 144, +155, 6, 71, 163, 186, 49, 126, 43, }; static uint32_t decode_key(uint8_t *buf) @@ -91,7 +91,7 @@ static uint32_t decode_key(uint8_t *buf) for (int i = 0; i < 32; i++) { unsigned p = keybits[i]; - key |= (unsigned)!!(buf[p>>3] & (1<<(p&7))) << i; + key |= (unsigned)!!(buf[p] & (1<<((i*5+3)&7))) << i; } return key;