From patchwork Wed Jul 8 13:44:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Elder X-Patchwork-Id: 8674 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 87134BD792 for ; Wed, 8 Jul 2020 13:44:42 +0000 (UTC) Received: from lancelot.ideasonboard.com (localhost [IPv6:::1]) by lancelot.ideasonboard.com (Postfix) with ESMTP id 5129861111; Wed, 8 Jul 2020 15:44:42 +0200 (CEST) Authentication-Results: lancelot.ideasonboard.com; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=ideasonboard.com header.i=@ideasonboard.com header.b="KSCv6Tew"; 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 F268E610B2 for ; Wed, 8 Jul 2020 15:44:40 +0200 (CEST) Received: from pyrite.rasen.tech (unknown [IPv6:2400:4051:61:600:2c71:1b79:d06d:5032]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 32C6051B; Wed, 8 Jul 2020 15:44:38 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1594215880; bh=8LgF9NOvt4hYssHIdnkWKvBRkLxc9XOw36QpzihEHcs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KSCv6TewGay3VzffVf3ab5wtPERxEY2qX0w79p3/sHTcmMeQM8TUVu21T7DMBXrvt 6OF5pJ8+m993hhyJBY1ma15xWNdMUZ5xQE/Jy5YgixTjKFUPLHJLhXGJ0wemRvPUq3 ZFn1YEES2u84ykarUEuxn6Nhezjx5/DvJFhfQ5hA= From: Paul Elder To: libcamera-devel@lists.libcamera.org Date: Wed, 8 Jul 2020 22:44:01 +0900 Message-Id: <20200708134417.67747-6-paul.elder@ideasonboard.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200708134417.67747-1-paul.elder@ideasonboard.com> References: <20200708134417.67747-1-paul.elder@ideasonboard.com> MIME-Version: 1.0 Subject: [libcamera-devel] [PATCH v4 05/21] libcamera: formats: PixelFormatInfo: Add v4l2 lookup function 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 a lookup function for PixelFormatInfo that takes a V4L2PixelFormat. Signed-off-by: Paul Elder Reviewed-by: Laurent Pinchart --- No change in v4 Changes in v3: - rename invalid PixelFormatInfo - make info const in PixelFormatInfo::info() Changes in v2: - move invalid PixelFormatInfo instance to anonymous namespace - add documentation --- include/libcamera/internal/formats.h | 1 + src/libcamera/formats.cpp | 25 ++++++++++++++++++++++--- 2 files changed, 23 insertions(+), 3 deletions(-) diff --git a/include/libcamera/internal/formats.h b/include/libcamera/internal/formats.h index 61e5ff5..054be37 100644 --- a/include/libcamera/internal/formats.h +++ b/include/libcamera/internal/formats.h @@ -50,6 +50,7 @@ public: bool isValid() const { return format.isValid(); } static const PixelFormatInfo &info(const PixelFormat &format); + static const PixelFormatInfo &info(const V4L2PixelFormat &format); /* \todo Add support for non-contiguous memory planes */ const char *name; diff --git a/src/libcamera/formats.cpp b/src/libcamera/formats.cpp index e6d3d3b..6d96055 100644 --- a/src/libcamera/formats.cpp +++ b/src/libcamera/formats.cpp @@ -7,6 +7,7 @@ #include "libcamera/internal/formats.h" +#include #include #include @@ -229,6 +230,8 @@ const std::map> &ImageFormats::data() const namespace { +const PixelFormatInfo pixelFormatInfoInvalid{}; + const std::map pixelFormatInfo{ /* RGB formats. */ { formats::BGR888, { @@ -700,17 +703,33 @@ const std::map pixelFormatInfo{ */ const PixelFormatInfo &PixelFormatInfo::info(const PixelFormat &format) { - static const PixelFormatInfo invalid{}; - const auto iter = pixelFormatInfo.find(format); if (iter == pixelFormatInfo.end()) { LOG(Formats, Warning) << "Unsupported pixel format 0x" << utils::hex(format.fourcc()); - return invalid; + return pixelFormatInfoInvalid; } return iter->second; } +/** + * \brief Retrieve information about a pixel format + * \param[in] format The V4L2 pixel format + * \return The PixelFormatInfo describing the V4L2 \a format if known, or an + * invalid PixelFormatInfo otherwise + */ +const PixelFormatInfo &PixelFormatInfo::info(const V4L2PixelFormat &format) +{ + const auto &info = std::find_if(pixelFormatInfo.begin(), pixelFormatInfo.end(), + [format](auto pair) { + return pair.second.v4l2Format == format; + }); + if (info == pixelFormatInfo.end()) + return pixelFormatInfoInvalid; + + return info->second; +} + } /* namespace libcamera */