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[79.124.17.100]) by mx.google.com with ESMTP id m24-20020a509998000000b0053ff6e09f35si698745edb.596.2023.10.31.07.56.17; Tue, 31 Oct 2023 07:56:18 -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=@haasn.xyz header.s=mail header.b=p+SwOUV4; 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 AFA5468CD63; Tue, 31 Oct 2023 16:55:09 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from haasn.dev (haasn.dev [78.46.187.166]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id D827068CD0A for ; Tue, 31 Oct 2023 16:54:55 +0200 (EET) Received: from haasn.dev (unknown [10.30.0.2]) by haasn.dev (Postfix) with ESMTP id 9A7E34BB08; Tue, 31 Oct 2023 15:54:55 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=haasn.xyz; s=mail; t=1698764095; bh=Dy1B8wu+LOZGb9ULISspBdzc2tEncy3+IYWoTfn10/o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=p+SwOUV4zYM0SG3HRKF0ax9o41DuXQFfc3jjgzy43qo/GmfWL9FIsMGiYpzD1/lI+ 9gl43wQxECbtmOOwPf8hkO1mIxg7KY6ihONUIIKajho6tH+Gu84SgRiOfjLG74rtDl RK0tSU1Qm+74M3dBsYIbRk58qeLC0BU/GcvBHCsc= From: Niklas Haas To: ffmpeg-devel@ffmpeg.org Date: Tue, 31 Oct 2023 15:54:47 +0100 Message-ID: <20231031145450.94975-5-ffmpeg@haasn.xyz> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231031145450.94975-1-ffmpeg@haasn.xyz> References: <20231031145450.94975-1-ffmpeg@haasn.xyz> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v3 5/8] avfilter/vf_alphamerge: warn if input not full range 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 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: woKlMTaoQxoy From: Niklas Haas Alpha planes must always be full range, so complain loudly if fed limited range grayscale input. --- libavfilter/vf_alphamerge.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavfilter/vf_alphamerge.c b/libavfilter/vf_alphamerge.c index 4bbc06da36..a5f5baf77e 100644 --- a/libavfilter/vf_alphamerge.c +++ b/libavfilter/vf_alphamerge.c @@ -60,6 +60,12 @@ static int do_alphamerge(FFFrameSync *fs) if (!alpha_buf) return ff_filter_frame(ctx->outputs[0], main_buf); + if (alpha_buf->color_range == AVCOL_RANGE_MPEG) { + av_log(ctx, AV_LOG_WARNING, "alpha plane color range tagged as %s, " + "output will be wrong!\n", + av_color_range_name(alpha_buf->color_range)); + } + if (s->is_packed_rgb) { int x, y; uint8_t *pin, *pout;