From patchwork Thu Aug 20 15:19:04 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: 27937 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 1ECACC3336 for ; Thu, 20 Aug 2026 15:20:24 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id C13D468373; Thu, 20 Aug 2026 17:20:23 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=pass (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="cYEth4GR"; dkim-atps=neutral Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [IPv6:2001:4b98:dc2:55:216:3eff:fef7:d647]) by lancelot.ideasonboard.com (Postfix) with ESMTPS id D0CD868364 for ; Thu, 20 Aug 2026 17:19:30 +0200 (CEST) Received: from pb-laptop.local (185.221.143.32.nat.pool.zt.hu [185.221.143.32]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 3FED6290D; Thu, 20 Aug 2026 17:18:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1787239089; bh=vZH47pP4meIWhSbirIGAt94i/xrUfimWtcgTwEnSqA8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cYEth4GRgsRlian1ZAY9y6QP+3gn9oZIM/HGFuQ0iNQDIb4YRRp5Op+3Fi6ANFxez vyBH1eR8r/Paplqk1Ai0SmN0QQDsQ8lSANzDhDzElLdsc410R3vQKDwTtDvfqYFxR9 W0CgCGtiEx8m4rrZ51HvCzXNQtSIUeOigS2f17dM= From: =?utf-8?q?Barnab=C3=A1s_P=C5=91cze?= To: libcamera-devel@lists.libcamera.org Cc: Jacopo Mondi , Stefan Klug Subject: [PATCH v6 34/47] ipa: libipa: histogram: Add `operator[]` to query bin Date: Thu, 20 Aug 2026 17:19:04 +0200 Message-ID: <20260820151918.2382337-35-barnabas.pocze@ideasonboard.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260820151918.2382337-1-barnabas.pocze@ideasonboard.com> References: <20260820151918.2382337-1-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 Reviewed-by: Stefan Klug --- src/ipa/libipa/histogram.cpp | 6 ++++++ src/ipa/libipa/histogram.h | 5 +++++ 2 files changed, 11 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..6192641766 100644 --- a/src/ipa/libipa/histogram.h +++ b/src/ipa/libipa/histogram.h @@ -42,6 +42,11 @@ 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 cumulative_[bin + 1] - cumulative_[bin]; + } + private: std::vector cumulative_; };