From patchwork Wed Mar 18 05:26:54 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kartik K. Khullar" X-Patchwork-Id: 18282 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 EAF5C44B4C2 for ; Wed, 18 Mar 2020 07:28:57 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id C85C668B135; Wed, 18 Mar 2020 07:28:57 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id BFC8068B132 for ; Wed, 18 Mar 2020 07:28:50 +0200 (EET) Received: by mail-pf1-f176.google.com with SMTP id f206so2254852pfa.10 for ; Tue, 17 Mar 2020 22:28:50 -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:mime-version :content-transfer-encoding; bh=1bufd1S+cU7iLPsIvlMx9uvl/VycB7eIHo1V84TA7/0=; b=MPb1UPnRd7NmbBDahVEBCNg+KhCirp1PpBXZydz44bMpF89LXooKd3ETNBd2SxmTWs US+OBzjM92Pm8F5Z3mZkB0ueODp1lzfCbEcgyUHoOEuubThpZoN1/DkDsWCCzVzmMpY9 rvLJ0FZlm3/JWK+h0siIzIpgeaDr59OnKw5wfvo7Tl29C93lJFw8atqu6qQIspoXvscm EksBMJuoadoz3BuYN6iRXhAW1mPhAwEZB4Ma7lRrFje8elDOuN6CtqzadwlSWhyL0T8/ 7MAouasZDTq85rgX0xQKChXale84sxM+tmJKgP+ssopGZDlauvmYao0E8iSM3GXlI2pC B7qw== 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:mime-version :content-transfer-encoding; bh=1bufd1S+cU7iLPsIvlMx9uvl/VycB7eIHo1V84TA7/0=; b=egB8Ah56cQ6cBPp+cb4sdIAVVGm1xfAaHVHTgiLmXPlYtkLU/6cUWEAJcdkSBylEF5 WrIA2qdRi0H9yeheG8OuMhDynrEX5ij2mDdSWRU44l7J3EEPjdmkki+B87OzCQFEWnAP 9lAl4/Ya3aUSIvCVL2o9VdmJEcm4Sr29dNZAXBI+fL6Y0vuTfplVCcQmYYnwRf3fpOL7 iXldyoHbsilk4OaHYA+Dkjv5IRVPPy2UfNlnpliJufwkuT6CMLZBn4BvTS1C4+YOoM6r jkax7JNqHPBG2Q3bFEMPTvByx4HxSwzrCqV0m1bi4TVwes3nOCEJAPkijizIrtiTa8F/ Ej7w== X-Gm-Message-State: ANhLgQ3xRVjPyC8en4u04ajXecm73rGZjos6lxm92M9+klXVBBpM7yM6 mf1vdTqyg6myKKPJI5Gmvnk= X-Google-Smtp-Source: ADFU+vsVMLNfPicv9jI+JR2eWoOsbYMo8ZAqlwIaL0AU4w+Sl2aPEf9K4laKY5suiCzn5JfUjKIjzw== X-Received: by 2002:a62:7dd7:: with SMTP id y206mr2644125pfc.79.1584509328703; Tue, 17 Mar 2020 22:28:48 -0700 (PDT) Received: from localhost.localdomain ([110.225.193.184]) by smtp.googlemail.com with ESMTPSA id s19sm4953237pfh.218.2020.03.17.22.28.46 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Mar 2020 22:28:48 -0700 (PDT) From: Kartik To: me@jailuthra.in, ffmpeg-devel@ffmpeg.org Date: Wed, 18 Mar 2020 10:56:54 +0530 Message-Id: <20200318052654.23316-1-kartikkhullar840@gmail.com> X-Mailer: git-send-email 2.20.1.windows.1 MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH] FLIF16 GSOC Project Range Transformation YCoCg 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: "Kartik K . Khullar" Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" From: Kartik K. Khullar --- FFmpeg/libavcodec/flif16transform.c | 53 +++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) diff --git a/FFmpeg/libavcodec/flif16transform.c b/FFmpeg/libavcodec/flif16transform.c index e69de29..febf5e9 100644 --- a/FFmpeg/libavcodec/flif16transform.c +++ b/FFmpeg/libavcodec/flif16transform.c @@ -0,0 +1,53 @@ +#include +#include + +//array of 2 elements is used as parameter because it represents min, max pair. +void TransformYCoCg(int16_t *range[2], int16_t *crange[2], int16_t yval, int16_t coval){ + int max_temp; + if (range[1][0] > range[1][1]){ + if (range[1][0] > range[1][2]){ + max_temp = range[1][0]; + } + else{ + max_temp = range[1][2]; + } + } + else{ + max_temp = range[1][1]; + } + int origmax4 = max_temp / 4 + 1; + int newmax = 4*origmax4 - 1; + + //Updating color ranges + range[0][0] = 0; //first channel minimum + range[1][0] = newmax; //first channek maximum + range[0][1] = -newmax; //second channel minimum + range[1][1] = newmax; //second channel maximum + range[0][2] = -newmax; //third channel minimum + range[1][2] = newmax; //third channel maximum + + //Updating conditional range values + crange[0][0] = range[0][0]; + crange[1][0] = range[1][0]; + + if (yval < origmax4 - 1){ + crange[0][1] = -3 + 4*yval; + crange[1][1] = 3 + 4*yval; + crange[0][2] = -2 - 2*yval; + crange[1][2] = 1 + 2 * yval - 2 * (abs(coval)/2); + } + else if (yval > 3*origmax4 - 1){ + crange[0][1] = 4*(yval - newmax); + crange[1][1] = 4*(newmax - yval); + crange[0][2] = -2*(newmax - yval) + 2 * ((abs(coval)+1)/2); + crange[1][2] = 2*(newmax - yval); + } + else{ + crange[0][1] = -newmax; + crange[1][1] = newmax; + crange[0][2] = (((2*newmax - 2*yval - 2*abs(coval) + 1) < (2 * yval + 1)) ? + (2*newmax - 2*yval - 2*abs(coval) + 1) : (2 * yval + 1)) / 2; + crange[1][2] = (2*(yval - newmax)) < (-2*yval - 1 + 2*(abs(coval)/2)) ? + (2*(yval - newmax)) : (-2*yval - 1 + 2*(abs(coval)/2)); + } +} \ No newline at end of file