From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id 8D5A547E02 for ; Fri, 27 Oct 2023 17:05:45 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 978D468CBED; Fri, 27 Oct 2023 20:05:01 +0300 (EEST) Received: from haasn.dev (haasn.dev [78.46.187.166]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 28B8E68C9DD for ; Fri, 27 Oct 2023 20:04:51 +0300 (EEST) Received: from haasn.dev (unknown [10.30.0.2]) by haasn.dev (Postfix) with ESMTP id E14EA4BB07; Fri, 27 Oct 2023 19:04:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=haasn.xyz; s=mail; t=1698426291; bh=LMmqL+qp2g92LrFxAtDUorY31nyCV1TPjEJdJV5P5uU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p3cl3ZyVn5gD+8w2qY1PwBsbPs8/VoBne9tpi9nuMtvYZiLc8qWalMlNObkaW3/22 JFDbiKSTSjMj0SSh5V519t26Hmh4IsX6mRqpd5Ea467MgizyvFo4jRbxAK4NjgeJfj iWb77EXcHA11olJAOM90rOtve/E3dwB+oLUxqVSs= From: Niklas Haas To: ffmpeg-devel@ffmpeg.org Date: Fri, 27 Oct 2023 19:04:43 +0200 Message-ID: <20231027170446.63684-5-ffmpeg@haasn.xyz> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231027170446.63684-1-ffmpeg@haasn.xyz> References: <20231027170446.63684-1-ffmpeg@haasn.xyz> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH 5/8] avfilter/vf_scale: preserve YUV range by default X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 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: Niklas Haas Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: From: Niklas Haas YUV->YUV conversions should preserve input range, if the output range is unspecified. Ensures full-range YUV input comes out as full-range YUV output by default, even through YUV->YUV pixel format conversions. --- libavfilter/vf_scale.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) diff --git a/libavfilter/vf_scale.c b/libavfilter/vf_scale.c index 19c91cb86e..f9b0746072 100644 --- a/libavfilter/vf_scale.c +++ b/libavfilter/vf_scale.c @@ -687,6 +687,28 @@ static int scale_field(ScaleContext *scale, AVFrame *dst, AVFrame *src, return 0; } +static int is_regular_yuv(enum AVPixelFormat fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt); + if (desc->flags & (AV_PIX_FMT_FLAG_RGB | AV_PIX_FMT_FLAG_PAL)) + return 0; + if (desc->name && av_strstart(desc->name, "xyz", NULL)) + return 0; + if (desc->nb_components < 3) + return 0; /* grayscale is forced full range inside libswscale */ + switch (fmt) { + case AV_PIX_FMT_YUVJ420P: + case AV_PIX_FMT_YUVJ422P: + case AV_PIX_FMT_YUVJ444P: + case AV_PIX_FMT_YUVJ440P: + case AV_PIX_FMT_YUVJ411P: + return 0; + default: + return 1; + } +} + + static int scale_frame(AVFilterLink *link, AVFrame *in, AVFrame **frame_out) { AVFilterContext *ctx = link->dst; @@ -794,6 +816,8 @@ scale: in_full = in->color_range == AVCOL_RANGE_JPEG; if (scale->out_range != AVCOL_RANGE_UNSPECIFIED) out_full = scale->out_range == AVCOL_RANGE_JPEG; + else if (is_regular_yuv(in->format) && is_regular_yuv(outlink->format)) + out_full = in_full; /* preserve pixel range by default */ if (in->width == outlink->w && in->height == outlink->h && -- 2.42.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".