93e72b695e
The libcamera internal headers are located in src/libcamera/include/. The directory is added to the compiler headers search path with a meson include_directories() directive, and internal headers are included with (e.g. for the internal semaphore.h header) #include "semaphore.h" All was well, until libcxx decided to implement the C++20 synchronization library. The __threading_support header gained a #include <semaphore.h> to include the pthread's semaphore support. As include_directories() adds src/libcamera/include/ to the compiler search path with -I, the internal semaphore.h is included instead of the pthread version. Needless to say, the compiler isn't happy. Three options have been considered to fix this issue: - Use -iquote instead of -I. The -iquote option instructs gcc to only consider the header search path for headers included with the "" version. Meson unfortunately doesn't support this option. - Rename the internal semaphore.h header. This was deemed to be the beginning of a long whack-a-mole game, where namespace clashes with system libraries would appear over time (possibly dependent on particular system configurations) and would need to be constantly fixed. - Move the internal headers to another directory to create a unique namespace through path components. This causes lots of churn in all the existing source files through the all project. The first option would be best, but isn't available to us due to missing support in meson. Even if -iquote support was added, we would need to fix the problem before a new version of meson containing the required support would be released. The third option is thus the only practical solution available. Bite the bullet, and do it, moving headers to include/libcamera/internal/. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Jacopo Mondi <jacopo@jmondi.org>
463 lines
14 KiB
C++
463 lines
14 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* formats.cpp - libcamera image formats
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*/
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#include "libcamera/internal/formats.h"
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#include <errno.h>
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#include "libcamera/internal/log.h"
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/**
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* \file formats.h
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* \brief Types and helper methods to handle libcamera image formats
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*/
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namespace libcamera {
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LOG_DEFINE_CATEGORY(Formats)
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/**
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* \class ImageFormats
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* \brief Describe V4L2Device and V4L2SubDevice image formats
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*
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* This class stores a list of image formats, each associated with a
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* corresponding set of image sizes. It is used to describe the formats and
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* sizes supported by a V4L2Device or V4L2Subdevice.
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*
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* Formats are stored as an integer. When used for a V4L2Device, the image
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* formats are fourcc pixel formats. When used for a V4L2Subdevice they are
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* media bus codes. Both are defined by the V4L2 specification.
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*
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* Sizes are stored as a list of SizeRange.
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*/
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/**
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* \brief Add a format and corresponding sizes to the description
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* \param[in] format Pixel format or media bus code to describe
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* \param[in] sizes List of supported size ranges for the format
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*
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* \return 0 on success or a negative error code otherwise
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* \retval -EEXIST The format is already described
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*/
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int ImageFormats::addFormat(unsigned int format, const std::vector<SizeRange> &sizes)
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{
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if (data_.find(format) != data_.end())
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return -EEXIST;
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data_[format] = sizes;
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return 0;
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}
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/**
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* \brief Check if the list of devices supported formats is empty
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* \return True if the list of supported formats is empty
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*/
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bool ImageFormats::isEmpty() const
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{
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return data_.empty();
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}
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/**
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* \brief Retrieve a list of all supported image formats
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* \return List of pixel formats or media bus codes
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*/
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std::vector<unsigned int> ImageFormats::formats() const
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{
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std::vector<unsigned int> formats;
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formats.reserve(data_.size());
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/* \todo: Should this be cached instead of computed each time? */
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for (auto const &it : data_)
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formats.push_back(it.first);
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return formats;
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}
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/**
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* \brief Retrieve all sizes for a specific format
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* \param[in] format The pixel format or mbus code
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*
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* Retrieve all size ranges for a specific format. For V4L2Device \a format is a
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* pixel format while for a V4L2Subdevice \a format is a media bus code.
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*
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* \return The list of image sizes supported for \a format, or an empty list if
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* the format is not supported
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*/
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const std::vector<SizeRange> &ImageFormats::sizes(unsigned int format) const
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{
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static const std::vector<SizeRange> empty;
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auto const &it = data_.find(format);
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if (it == data_.end())
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return empty;
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return it->second;
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}
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/**
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* \brief Retrieve the map that associates formats to image sizes
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* \return The map that associates formats to image sizes
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*/
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const std::map<unsigned int, std::vector<SizeRange>> &ImageFormats::data() const
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{
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return data_;
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}
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/**
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* \class PixelFormatInfo
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* \brief Information about pixel formats
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*
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* The PixelFormatInfo class groups together information describing a pixel
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* format. It facilitates handling of pixel formats by providing data commonly
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* used in pipeline handlers.
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*
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* \var PixelFormatInfo::format
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* \brief The PixelFormat described by this instance
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*
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* \var PixelFormatInfo::v4l2Format
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* \brief The V4L2 pixel format corresponding to the PixelFormat
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*
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* \var PixelFormatInfo::bitsPerPixel
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* \brief The average number of bits per pixel
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*
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* The number per pixel averages the total number of bits for all colour
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* components over the whole image, excluding any padding bits or padding
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* pixels.
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*
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* For formats that store pixels with bit padding within words, only the
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* effective bits are taken into account. For instance, 12-bit Bayer data
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* stored in two bytes per pixel report 12, not 16, in this field.
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*
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* Formats that don't have a fixed number of bits per pixel, such as compressed
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* formats, report 0 in this field.
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*
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* \var PixelFormatInfo::colourEncoding
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* \brief The colour encoding type
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*
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* \var PixelFormatInfo::packed
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* \brief Tell if multiple pixels are packed in the same bytes
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*
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* Packed formats are defined as storing data from multiple pixels in the same
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* bytes. For instance, 12-bit Bayer data with two pixels stored in three bytes
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* is packed, while the same data stored with 4 bits of padding in two bytes
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* per pixel is not packed.
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*/
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/**
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* \enum PixelFormatInfo::ColourEncoding
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* \brief The colour encoding type
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*
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* \var PixelFormatInfo::ColourEncodingRGB
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* \brief RGB colour encoding
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*
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* \var PixelFormatInfo::ColourEncodingYUV
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* \brief YUV colour encoding
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*
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* \var PixelFormatInfo::ColourEncodingRAW
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* \brief RAW colour encoding
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*/
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namespace {
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const std::map<PixelFormat, PixelFormatInfo> pixelFormatInfo{
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/* RGB formats. */
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{ PixelFormat(DRM_FORMAT_BGR888), {
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.format = PixelFormat(DRM_FORMAT_BGR888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_RGB24),
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.bitsPerPixel = 24,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_RGB888), {
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.format = PixelFormat(DRM_FORMAT_RGB888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_BGR24),
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.bitsPerPixel = 24,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_ABGR8888), {
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.format = PixelFormat(DRM_FORMAT_ABGR8888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_RGBA32),
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.bitsPerPixel = 32,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_ARGB8888), {
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.format = PixelFormat(DRM_FORMAT_ARGB8888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_ABGR32),
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.bitsPerPixel = 32,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_BGRA8888), {
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.format = PixelFormat(DRM_FORMAT_BGRA8888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_ARGB32),
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.bitsPerPixel = 32,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_RGBA8888), {
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.format = PixelFormat(DRM_FORMAT_RGBA8888),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_BGRA32),
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.bitsPerPixel = 32,
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.colourEncoding = PixelFormatInfo::ColourEncodingRGB,
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.packed = false,
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} },
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/* YUV packed formats. */
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{ PixelFormat(DRM_FORMAT_YUYV), {
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.format = PixelFormat(DRM_FORMAT_YUYV),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_YUYV),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_YVYU), {
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.format = PixelFormat(DRM_FORMAT_YVYU),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_YVYU),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_UYVY), {
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.format = PixelFormat(DRM_FORMAT_UYVY),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_UYVY),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_VYUY), {
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.format = PixelFormat(DRM_FORMAT_VYUY),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_VYUY),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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/* YUV planar formats. */
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{ PixelFormat(DRM_FORMAT_NV16), {
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.format = PixelFormat(DRM_FORMAT_NV16),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_NV16),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_NV61), {
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.format = PixelFormat(DRM_FORMAT_NV61),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_NV61),
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.bitsPerPixel = 16,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_NV12), {
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.format = PixelFormat(DRM_FORMAT_NV12),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_NV12),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_NV21), {
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.format = PixelFormat(DRM_FORMAT_NV21),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_NV21),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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/* Greyscale formats. */
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{ PixelFormat(DRM_FORMAT_R8), {
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.format = PixelFormat(DRM_FORMAT_R8),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_GREY),
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.bitsPerPixel = 8,
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.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
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.packed = false,
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} },
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/* Bayer formats. */
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{ PixelFormat(DRM_FORMAT_SBGGR8), {
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.format = PixelFormat(DRM_FORMAT_SBGGR8),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SBGGR8),
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.bitsPerPixel = 8,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGBRG8), {
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.format = PixelFormat(DRM_FORMAT_SGBRG8),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGBRG8),
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.bitsPerPixel = 8,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGRBG8), {
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.format = PixelFormat(DRM_FORMAT_SGRBG8),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG8),
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.bitsPerPixel = 8,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SRGGB8), {
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.format = PixelFormat(DRM_FORMAT_SRGGB8),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SRGGB8),
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.bitsPerPixel = 8,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SBGGR10), {
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.format = PixelFormat(DRM_FORMAT_SBGGR10),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SBGGR10),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGBRG10), {
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.format = PixelFormat(DRM_FORMAT_SGBRG10),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGBRG10),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGRBG10), {
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.format = PixelFormat(DRM_FORMAT_SGRBG10),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG10),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SRGGB10), {
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.format = PixelFormat(DRM_FORMAT_SRGGB10),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SRGGB10),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SBGGR10, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SBGGR10, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SBGGR10P),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SGBRG10, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SGBRG10, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGBRG10P),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SGRBG10, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SGRBG10, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG10P),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SRGGB10, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SRGGB10, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SRGGB10P),
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.bitsPerPixel = 10,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SBGGR12), {
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.format = PixelFormat(DRM_FORMAT_SBGGR12),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SBGGR12),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGBRG12), {
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.format = PixelFormat(DRM_FORMAT_SGBRG12),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGBRG12),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SGRBG12), {
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.format = PixelFormat(DRM_FORMAT_SGRBG12),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG12),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SRGGB12), {
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.format = PixelFormat(DRM_FORMAT_SRGGB12),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SRGGB12),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = false,
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} },
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{ PixelFormat(DRM_FORMAT_SBGGR12, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SBGGR12, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SBGGR12P),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SGBRG12, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SGBRG12, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGBRG12P),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SGRBG12, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SGRBG12, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SGRBG12P),
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.bitsPerPixel = 12,
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.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
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.packed = true,
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} },
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{ PixelFormat(DRM_FORMAT_SRGGB12, MIPI_FORMAT_MOD_CSI2_PACKED), {
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.format = PixelFormat(DRM_FORMAT_SRGGB12, MIPI_FORMAT_MOD_CSI2_PACKED),
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.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_SRGGB12P),
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.bitsPerPixel = 12,
|
|
.colourEncoding = PixelFormatInfo::ColourEncodingRAW,
|
|
.packed = true,
|
|
} },
|
|
|
|
/* Compressed formats. */
|
|
{ PixelFormat(DRM_FORMAT_MJPEG), {
|
|
.format = PixelFormat(DRM_FORMAT_MJPEG),
|
|
.v4l2Format = V4L2PixelFormat(V4L2_PIX_FMT_MJPEG),
|
|
.bitsPerPixel = 0,
|
|
.colourEncoding = PixelFormatInfo::ColourEncodingYUV,
|
|
.packed = false,
|
|
} },
|
|
};
|
|
|
|
} /* namespace */
|
|
|
|
/**
|
|
* \fn bool PixelFormatInfo::isValid() const
|
|
* \brief Check if the pixel format info is valid
|
|
* \return True if the pixel format info is valid, false otherwise
|
|
*/
|
|
|
|
/**
|
|
* \brief Retrieve information about a pixel format
|
|
* \param[in] format The pixel format
|
|
* \return The PixelFormatInfo describing the \a format if known, or an invalid
|
|
* PixelFormatInfo otherwise
|
|
*/
|
|
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 "
|
|
<< format.toString();
|
|
return invalid;
|
|
}
|
|
|
|
return iter->second;
|
|
}
|
|
|
|
} /* namespace libcamera */
|