From patchwork Mon Aug 17 11:43:35 2026 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= X-Patchwork-Id: 27810 Return-Path: X-Original-To: parsemail@patchwork.libcamera.org Delivered-To: parsemail@patchwork.libcamera.org Received: from lancelot.ideasonboard.com (lancelot.ideasonboard.com [92.243.16.209]) by patchwork.libcamera.org (Postfix) with ESMTPS id 65BB6C3263 for ; Mon, 17 Aug 2026 11:44:51 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 9EB23682FE; Mon, 17 Aug 2026 13:44:50 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="gnpf5E14"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id 6A07F682AC for ; Mon, 17 Aug 2026 13:44:04 +0200 (CEST) Received: from pb-laptop.local (catv-89-132-78-151.catv.fixed.one.hu [89.132.78.151]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 27C8A153F; Mon, 17 Aug 2026 13:42:45 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1786966965; bh=Ls7oCRtmwiFmC2UtoV7UpbJ7e4NJuUoOjQF7WXt5U18=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=gnpf5E14Y4qOWND1nAiEXJnCNaIQtgVQwBKDYC2YoquX6BMfwM8t/oXYs011v2bPa V0rIEBmxpTs03dQIP9GFfBSqVIvw+3XGZmg9oHbmny7sTOvlbFEvZNeyYlHi8B/emg FFKsUCmUhdAngEGxEkuqObck/Y+4NBHg3bAJekok= From: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= To: libcamera-devel@lists.libcamera.org Cc: Jacopo Mondi Subject: [PATCH v5 34/47] ipa: libipa: histogram: Add `operator[]` to query bin Date: Mon, 17 Aug 2026 13:43:35 +0200 Message-ID: <20260817114349.994123-35-barnabas.pocze@ideasonboard.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260817114349.994123-1-barnabas.pocze@ideasonboard.com> References: <20260817114349.994123-1-barnabas.pocze@ideasonboard.com> MIME-Version: 1.0 X-BeenThere: libcamera-devel@lists.libcamera.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: libcamera-devel-bounces@lists.libcamera.org Sender: "libcamera-devel" Add an `operator[]` that takes an integral bin number and returns the count pertaining to that specific bin. Signed-off-by: Barnabás Pőcze Reviewed-by: Jacopo Mondi --- src/ipa/libipa/histogram.cpp | 6 ++++++ src/ipa/libipa/histogram.h | 7 +++++++ 2 files changed, 13 insertions(+) diff --git a/src/ipa/libipa/histogram.cpp b/src/ipa/libipa/histogram.cpp index bcf2639082..2f91ffb6d7 100644 --- a/src/ipa/libipa/histogram.cpp +++ b/src/ipa/libipa/histogram.cpp @@ -74,6 +74,12 @@ Histogram::Histogram(Span data) * \return Number of values */ +/** + * \fn Histogram::operator[](size_t bin) const + * \brief Retrieve the value for \a bin + * \return The value in \a bin, or 0 if \a bin is out of range + */ + /** * \brief Cumulative frequency up to a (fractional) point in a bin * \param[in] bin The bin up to which to cumulate diff --git a/src/ipa/libipa/histogram.h b/src/ipa/libipa/histogram.h index 0c02dda2ba..b3f59b7c31 100644 --- a/src/ipa/libipa/histogram.h +++ b/src/ipa/libipa/histogram.h @@ -42,6 +42,13 @@ public: double quantile(double q, uint32_t first = 0, uint32_t last = UINT_MAX) const; double interQuantileMean(double lowQuantile, double hiQuantile) const; + uint32_t operator[](size_t bin) const + { + return bin < bins() + ? cumulative_[bin + 1] - cumulative_[bin] + : 0; + } + private: std::vector cumulative_; };