From patchwork Tue Mar 20 07:13:46 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gagandeep Singh X-Patchwork-Id: 8055 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.2.1.70 with SMTP id c67csp3547423jad; Tue, 20 Mar 2018 00:14:30 -0700 (PDT) X-Google-Smtp-Source: AG47ELsGrmUrE8br3EljwMpo7PLjfiFfxgue5Q5f71N8jUGtWss1Va59U4yzqG729ZGscDYvEIZa X-Received: by 10.28.12.14 with SMTP id 14mr1102118wmm.107.1521530070819; Tue, 20 Mar 2018 00:14:30 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1521530070; cv=none; d=google.com; s=arc-20160816; b=0GCeFYgj9S1m5X0eT74QCh0fnr2dyCsRvJvdZsnQ38CZclCFK4ilGx4KPwJWWNjN1T N2uv1vGYjYgeaCkd5GR5jVyPnMPIQ8SXTdwFP3cWxDLu3EWhNrfdR1SXOKXQ6AGpvbA1 cPqutPgCDXR/8BCIplb2Ynmp8ntf5Msfl6l5itUDTuVI2xL6PGvZzUxgTALkZVVxAG7U DeIFvjTYC7XVKBtQIj3NjwifwS5fj4iODQ0SPxMwTHMxX6ukrFv09pmCjPcFfp35gcGQ +5skEoKqooyJ94zEjA9xY1ae3hfcA9uvzZ4b4cpcN/pYIzS+0bEDV+geGvRQUqdMJxve q+Sw== 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:dkim-signature :delivered-to:arc-authentication-results; bh=TwCgFXnd3gyt7vnBO9FMTT+1++SwWOApdoYUNOQWoVM=; b=UC/OYQl4VogwiRH9ugr5GZCFYSxkYXtA1LX8H6tB4xaP1I5p2+Laf9u8mUiFL8fPh8 4zcGF93x6BSmr1+Ew5tnUuHeXuj0WM4jH9fhdZOS8YdJmCYMiP7x1wc6vDm+VM8k770h PcupHTCGdvzS35Sv60hlM1XmCE9PfDTkkKP8DNYKcR19np0pw/X8hz3K5GUBDHhVmH8C jaj3wMJKeJFpzy0PCEzxbRBOBLsUkfQIKyTUovRdC2qS+qTE9suhNDRNUfaA0+mOR2LR TDqRsYVhhFVBdHox6zQ2rRC/MWLu9WIcKmbWe34BUNgsBohiTDiWprpcH4zhe9cUWNG0 BjTg== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20161025 header.b=AW2z6JIJ; 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=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id m45si910546wrf.510.2018.03.20.00.14.29; Tue, 20 Mar 2018 00:14:30 -0700 (PDT) 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=@gmail.com header.s=20161025 header.b=AW2z6JIJ; 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=QUARANTINE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 0AEA168A1B5; Tue, 20 Mar 2018 09:14:14 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-io0-f196.google.com (mail-io0-f196.google.com [209.85.223.196]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 04182689D34 for ; Tue, 20 Mar 2018 09:14:07 +0200 (EET) Received: by mail-io0-f196.google.com with SMTP id 141so1048185iou.12 for ; Tue, 20 Mar 2018 00:14:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=6S5dPwltvOZSBA+pVEjebtJ3lea1r17U4ZiXHXcy/OE=; b=AW2z6JIJ2PyC79Hp7vUDomuMuOFnmDC7la5vcETEJfzjREj4UepW77dBk4cPRi4DWi 29pX/O8e0vKGO7hh19C7NiFA5cq/SHUZfYMM9O8bKF0tcQG2kFjCAX4ov8wxSYqg5trH Mo0bCc9HU2NInehmLJ3HwhkrY3LIvHbyj/8D9R7wZWJumRz5Xi743ZVYZ7zjiHufGCnJ OjR6z4luPAPRUYEgXQnJAsSqBuhflmYi8NTj6Nh+h1YswpjGN2vdTMKIdjNd2DROcg00 isYPJAP7stUUT6iUkmKc3amHl2tr5x+kET4ylJ7YC0+QFH6MKLwgjDNwnutzq7BcTwgw Fqmg== 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; bh=6S5dPwltvOZSBA+pVEjebtJ3lea1r17U4ZiXHXcy/OE=; b=ollPLvYcR+uw79rRMwzmXb/qql3xF4uXouMDKzIGkfTU672cn3ZVyT4yQTfqN8a5Ye 5VOs+EBDYMEY+pf+pp8oOc2X0u8/ifvlgz18QZbOGuT/YKdiSpV1xoZlhyPhuVHRnm6P T92NuIrc/EyWaHvLdYD7I2kLl7sDyaBjYST9yPpvEJQyIf9Ev6I2NjbhtdzgMBDWl2lA f+Jfr0LMw+z1FQFvzet1iniK75tB+vVCBJvZkgdle+aSTLlcMJyv6Urs+uQm2lpx3Tky 6O6hosw1emRzPNzpSDDHbvrGPMz8dJ9iRFSwh+Hwt6GOqv/eQ2RKF1SZAEqrFNDpJUuK /XMw== X-Gm-Message-State: AElRT7FWXj9bwbzIkQz2U/ZgG7BBzyKQKOIrwOavGwAeaLVxUzaaZbgc FMN4vAtuxl+04GlevvFE7g+oNhQEezE= X-Received: by 10.107.32.13 with SMTP id g13mr18685iog.101.1521530059513; Tue, 20 Mar 2018 00:14:19 -0700 (PDT) Received: from localhost.localdomain ([2402:8100:20bc:70d9:6025:c00b:53d9:25f4]) by smtp.googlemail.com with ESMTPSA id 193sm677327ioe.7.2018.03.20.00.14.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 20 Mar 2018 00:14:19 -0700 (PDT) From: Gagandeep Singh To: ffmpeg-devel@ffmpeg.org Date: Tue, 20 Mar 2018 12:43:46 +0530 Message-Id: <20180320071346.21636-1-deepgagan231197@gmail.com> X-Mailer: git-send-email 2.14.1 Subject: [FFmpeg-devel] [PATCH] lavc/cfhd:fixed alpha channel decoding in gbrap12 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: Gagandeep Singh MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" alpha channel required a post processing after it's decoding --- libavcodec/cfhd.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/libavcodec/cfhd.c b/libavcodec/cfhd.c index a064cd1599..d64acab8d4 100644 --- a/libavcodec/cfhd.c +++ b/libavcodec/cfhd.c @@ -94,6 +94,19 @@ static inline int dequant_and_decompand(int level, int quantisation) FFSIGN(level) * quantisation; } +static inline void process_alpha(int16_t *alpha, int width) +{ + int i, channel; + for (i = 0; i < width; i++){ + channel = alpha[i]; + channel -= 16 << 4; + channel <<= 8; + channel -= 128; + channel /= 223; + alpha[i] = channel; + } +} + static inline void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, @@ -792,6 +805,8 @@ static int cfhd_decode(AVCodecContext *avctx, void *data, int *got_frame, high = s->plane[plane].l_h[7]; for (i = 0; i < lowpass_height * 2; i++) { horiz_filter_clip(dst, low, high, lowpass_width, s->bpc); + if(act_plane == 3) + process_alpha(dst, lowpass_width * 2); low += lowpass_width; high += lowpass_width; dst += pic->linesize[act_plane] / 2;