From patchwork Fri Dec 1 20:02:42 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhong Li X-Patchwork-Id: 6418 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.2.161.94 with SMTP id m30csp2831752jah; Mon, 27 Nov 2017 23:03:44 -0800 (PST) X-Google-Smtp-Source: AGs4zMZ+OObi5n94BN3KZplhAeJNKxSjTxtjl9xcMgJWhyZELx/0AxkHwSpJSi+zH0ePRmsSU2KB X-Received: by 10.223.176.194 with SMTP id j2mr35735266wra.62.1511852624672; Mon, 27 Nov 2017 23:03:44 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1511852624; cv=none; d=google.com; s=arc-20160816; b=PKR0erSn731+vARR3dll2Mb+kJMsuUdhw/Z298ePCRh3lSkq0YeGW+4wOnvqZwIIej gN4cQmekJErBLMs+4KOC5q/c2Px8Qh261UckDuHWvi+WSiV0R8UpicgV7AvSFqVncMhu j7wbpILXyRgvFU6+iYqyAcliS3YgYXLuRadClcUVZSpBK34IpCPT1AxvQV3c4qsbXIc5 b2zf9gAzJcH09Ps/qCHnJKWg3SFuxLzkShquId+AE1cJxKjWLD+c4jdmP9/XYS9Ca9Gj lwHtK0AvgMHB5zMr3iNZ5YdPN1apPKq0GXHLoMDa9hEbj/S8syHuMPtOB3prL/Vyzn5m Ze+A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version:cc:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:message-id:date:to:from:delivered-to :arc-authentication-results; bh=ZFr0bfEsg5QCPAA/qzRZ/j2+UvW5Pf9du2/vzrLvvmY=; b=q0Vpc9e0o5EKZbnXidqzb3YG6auBxwnbNozc7s8oxrm9X50ws4iU7XRO06OdraWPSg ymMiMWiD/GYWK+H4gMcwOp/HiiShY3KHhEpHze8FnGj7eHl/2NN5HvjkheMaWar7reKr H/CRfLXzLC/INgw7I/vooNUx+yW4uzYXJkB/R7Q8jAcSwdNkpNP8BGbC9ojnXGoP2Tmi FgtUlLbDD8lOty1fpGQOAlh86PLglh2WUYUMkkLCwbxW/fXJgETeFzQV5T+jR1HeYKQn dolkCVDmrwVa8GhbuWjy0Yu90Ru95YLmMht+DQL3etq7yDhk6fX1l+pnWQsiXChiIUDa sgHA== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id s184si12367346wmd.136.2017.11.27.23.03.43; Mon, 27 Nov 2017 23:03:44 -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; 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 Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 5FB5F68A042; Tue, 28 Nov 2017 09:03:40 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 6A3CB6898B7 for ; Tue, 28 Nov 2017 09:03:33 +0200 (EET) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 Nov 2017 23:03:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.44,467,1505804400"; d="scan'208";a="10422241" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.13.100]) by orsmga001.jf.intel.com with ESMTP; 27 Nov 2017 23:03:31 -0800 From: Zhong Li To: ffmpeg-devel@ffmpeg.org Date: Fri, 1 Dec 2017 15:02:42 -0500 Message-Id: <1512158562-24848-1-git-send-email-zhong.li@intel.com> X-Mailer: git-send-email 1.8.3.1 Subject: [FFmpeg-devel] [PATCH] lavc/qsvenc: set HRD buffer size 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: Zhong Li MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Hypothetical Reference Decoding (HRD) model assumes that data flows into a buffer of the fixed size BufferSizeInKB with a constant bitrate. BufferSizeInKB represents the maximum possible size of any compressed frames. Signed-off-by: Zhong Li --- libavcodec/qsvenc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/qsvenc.c b/libavcodec/qsvenc.c index c45b2a6..9283d40 100644 --- a/libavcodec/qsvenc.c +++ b/libavcodec/qsvenc.c @@ -429,7 +429,7 @@ static int init_video_param(AVCodecContext *avctx, QSVEncContext *q) q->param.mfx.NumSlice = avctx->slices; q->param.mfx.NumRefFrame = FFMAX(0, avctx->refs); q->param.mfx.EncodedOrder = 0; - q->param.mfx.BufferSizeInKB = 0; + q->param.mfx.BufferSizeInKB = (avctx->rc_buffer_size > 0) ? avctx->rc_buffer_size / 8000 : 0; desc = av_pix_fmt_desc_get(sw_format); if (!desc)