From patchwork Mon Nov 23 19:37:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andreas Rheinhardt X-Patchwork-Id: 24000 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 E0AC144A49B for ; Mon, 23 Nov 2020 21:38:39 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id C771B68BBCB; Mon, 23 Nov 2020 21:38:39 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wr1-f65.google.com (mail-wr1-f65.google.com [209.85.221.65]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id D7D8A68BBD5 for ; Mon, 23 Nov 2020 21:38:24 +0200 (EET) Received: by mail-wr1-f65.google.com with SMTP id l1so19773052wrb.9 for ; Mon, 23 Nov 2020 11:38:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references:reply-to :mime-version:content-transfer-encoding; bh=B9q7pE7FlbwcpcPXUinr4r1GvYLRYy5JAwz2X73zCG4=; b=SOQSFYJUbVLtPWxXREwOcYRypW01Meo5i9N5CEdHL7cTzr/0kCjrwB7uucWdGCapCa PQFHsV7TIiOhbgl1hklyu0njoWWXV3iLMlBURJxkSGFSnDMnioHPJsTmSKYlP2eXhBtm 4v5ta/tYTk21qioh5c6F8X3EHobZgAarIwP03ZdUQP1m1eGS260rIHtarwipdzsK3sP8 mBhiFMxyN6YZ9/IlKvhetc97ER6yhtP73nM5By5QbwNyD0R+BCeB5Hh1MIbAWfArG4Hu tNx8J1aSgs/JY+7+UtVw6qvmF55LZ7wLmMTXBqSOs8PsNWq+FXzDURaEjbr2hD47fSAA 300A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:reply-to:mime-version:content-transfer-encoding; bh=B9q7pE7FlbwcpcPXUinr4r1GvYLRYy5JAwz2X73zCG4=; b=lcCJjes2iPfF0UQLe2albqt4l1Mqi/b9/vUBftPG0vvMKFMIh8AYwTRjWfIv2W9Yfu QTkSl7OWOpYs2bvMlc2Zrn5KCt3azLOSu4zbBdjvzwBbTm10GozjEe+wusayYPytYhyd dTfTEuSI5HirBUaXHL+1GqIZRhdKrhFddr/yJnTNl7nd7muy3CK5C9I0Jx1JsWykbpdI G1lpASjoVIwQamRK64bkHTs0zBwHTqgUWJw7qyQQakdUoR0cIoBhJsudBMdeMWMJOmb0 QlI6bEheCRN0Abt+L/7Vi50LYg3QrGRrcl1jmsbKLQD0U1wMpys57JSsPOS/9WBS806Y 1Aqg== X-Gm-Message-State: AOAM530kbBaDjDfm5/xaytgiTGLgq9v1BOxSLpP7pFuS3Uz/r4neUK0d DwXF16caAUdv8T5utUz/oNvOK7fXh12EkA== X-Google-Smtp-Source: ABdhPJybU7SrvrjXuuV0NXTy9hQHoOEInMlMEqoF5n9qayv1KzdV45EDBboF91M1RFxxdvV/GmVSlA== X-Received: by 2002:a5d:45d0:: with SMTP id b16mr671376wrs.350.1606160303896; Mon, 23 Nov 2020 11:38:23 -0800 (PST) Received: from sblaptop.fritz.box (ipbcc1aa4b.dynamic.kabel-deutschland.de. [188.193.170.75]) by smtp.gmail.com with ESMTPSA id e6sm564086wme.27.2020.11.23.11.38.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Nov 2020 11:38:23 -0800 (PST) From: Andreas Rheinhardt To: ffmpeg-devel@ffmpeg.org Date: Mon, 23 Nov 2020 20:37:29 +0100 Message-Id: <20201123193739.1249300-19-andreas.rheinhardt@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201120072116.818090-1-andreas.rheinhardt@gmail.com> References: <20201120072116.818090-1-andreas.rheinhardt@gmail.com> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 181/191] avcodec/h261: Make ff_h261_common_init() thread-safe 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 Cc: Andreas Rheinhardt Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Andreas Rheinhardt --- libavcodec/h261.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/libavcodec/h261.c b/libavcodec/h261.c index 47bad4e57f..9c848eb7e8 100644 --- a/libavcodec/h261.c +++ b/libavcodec/h261.c @@ -25,6 +25,8 @@ * H.261 codec */ +#include "libavutil/thread.h" + #include "avcodec.h" #include "h261.h" @@ -80,13 +82,13 @@ void ff_h261_loop_filter(MpegEncContext *s) h261_loop_filter(dest_cr, uvlinesize); } -av_cold void ff_h261_common_init(void) +static av_cold void h261_common_init(void) { - static int done = 0; - - if (done) - return; - ff_rl_init(&ff_h261_rl_tcoeff, ff_h261_rl_table_store); - done = 1; +} + +av_cold void ff_h261_common_init(void) +{ + static AVOnce init_static_once = AV_ONCE_INIT; + ff_thread_once(&init_static_once, h261_common_init); }