summaryrefslogtreecommitdiff
path: root/include/android/metadata/system/camera_metadata.h
diff options
context:
space:
mode:
authorMilan Zamazal <mzamazal@redhat.com>2024-09-27 15:46:08 +0200
committerKieran Bingham <kieran.bingham@ideasonboard.com>2024-09-27 15:01:57 +0100
commit306b0f952fa4191df92770d2b754d594f1cfb0cb (patch)
treeb0aa6a12475d33cc22b4a0921e9d71395faf4bcd /include/android/metadata/system/camera_metadata.h
parentb28037e6ee7445055c5db62274f456821345ec58 (diff)
libcamera: software_isp: Move BlackLevel to libcamera::ipa::soft
IPA modules use custom namespaces for all their internal components to avoid namespace clashes. The simple IPA module for the software ISP uses libcamera::ipa::soft for this purpose. It however defines an internal class named BlackLevel in the root of the libcamera namespace, making it prone to clashes. Move it to the ipa::soft namespace along with the rest of the code. Signed-off-by: Milan Zamazal <mzamazal@redhat.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'include/android/metadata/system/camera_metadata.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-22 13:48:01 +0000
a id='n116' href='#n116'>116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2021, Google Inc.
 *
 * mapped_framebuffer.cpp - Mapped Framebuffer support
 */

#include "libcamera/internal/mapped_framebuffer.h"

#include <algorithm>
#include <errno.h>
#include <map>
#include <sys/mman.h>
#include <unistd.h>

#include <libcamera/base/log.h>

/**
 * \file libcamera/internal/mapped_framebuffer.h
 * \brief Frame buffer memory mapping support
 */

namespace libcamera {

LOG_DECLARE_CATEGORY(Buffer)

/**
 * \class MappedBuffer
 * \brief Provide an interface to support managing memory mapped buffers
 *
 * The MappedBuffer interface provides access to a set of MappedPlanes which
 * are available for access by the CPU.
 *
 * This class is not meant to be constructed directly, but instead derived
 * classes should be used to implement the correct mapping of a source buffer.
 *
 * This allows treating CPU accessible memory through a generic interface
 * regardless of whether it originates from a libcamera FrameBuffer or other
 * source.
 */

/**
 * \typedef MappedBuffer::Plane
 * \brief A mapped region of memory accessible to the CPU
 *
 * The MappedBuffer::Plane uses the Span interface to describe the mapped memory
 * region.
 */

/**
 * \brief Construct an empty MappedBuffer
 */
MappedBuffer::MappedBuffer()
	: error_(0)
{
}

/**
 * \brief Move constructor, construct the MappedBuffer with the contents of \a
 * other using move semantics
 * \param[in] other The other MappedBuffer
 *
 * Moving a MappedBuffer moves the mappings contained in the \a other to the new
 * MappedBuffer and invalidates the \a other.
 *
 * No mappings are unmapped or destroyed in this process.
 */
MappedBuffer::MappedBuffer(MappedBuffer &&other)
{
	*this = std::move(other);
}

/**
 * \brief Move assignment operator, replace the mappings with those of \a other
* \param[in] other The other MappedBuffer
 *
 * Moving a MappedBuffer moves the mappings contained in the \a other to the new
 * MappedBuffer and invalidates the \a other.
 *
 * No mappings are unmapped or destroyed in this process.
 */
MappedBuffer &MappedBuffer::operator=(MappedBuffer &&other)
{
	error_ = other.error_;
	planes_ = std::move(other.planes_);
	maps_ = std::move(other.maps_);
	other.error_ = -ENOENT;

	return *this;
}

MappedBuffer::~MappedBuffer()
{
	for (Plane &map : maps_)
		munmap(map.data(), map.size());
}

/**
 * \fn MappedBuffer::isValid()
 * \brief Check if the MappedBuffer instance is valid
 * \return True if the MappedBuffer has valid mappings, false otherwise
 */

/**
 * \fn MappedBuffer::error()
 * \brief Retrieve the map error status
 *
 * This function retrieves the error status from the MappedBuffer.
 * The error status is a negative number as defined by errno.h. If
 * no error occurred, this function returns 0.
 *
 * \return The map error code
 */

/**
 * \fn MappedBuffer::planes()
 * \brief Retrieve the mapped planes
 *
 * This function retrieves the successfully mapped planes stored as a vector
 * of Span<uint8_t> to provide access to the mapped memory.
 *
 * \return A vector of the mapped planes
 */

/**
 * \var MappedBuffer::error_
 * \brief Stores the error value if present
 *
 * MappedBuffer derived classes shall set this to a negative value as defined