# SPDX-License-Identifier: CC0-1.0
project('libcamera', 'c', 'cpp',
meson_version : '>= 0.56',
version : '0.0.0',
default_options : [
'werror=true',
'warning_level=2',
'cpp_std=c++17',
],
license : 'LGPL 2.1+')
# Generate version information. The libcamera_git_version variable contains the
# full version with git patch count and SHA1 (e.g. 1.2.3+211-c94a24f4), while
# the libcamera_version variable contains the major.minor.patch (e.g. 1.2.3)
# only. If the source tree isn't under git control, or if it matches the last
# git version tag, the build metadata (e.g. +211-c94a24f4) is omitted from
# libcamera_git_version.
libcamera_git_version = run_command('utils/gen-version.sh',
meson.project_build_root(),
meson.project_source_root(),
check: false).stdout().strip()
if libcamera_git_version == ''
libcamera_git_version = meson.project_version()
endif
libcamera_version = libcamera_git_version.split('+')[0]
# This script gererates the .tarball-version file on a 'meson dist' command.
meson.add_dist_script('utils/run-dist.sh')
# Configure the build environment.
cc = meson.get_compiler('c')
cxx = meson.get_compiler('cpp')
config_h = configuration_data()
if cc.has_header_symbol('unistd.h', 'issetugid')
config_h.set('HAVE_ISSETUGID', 1)
endif
if cc.has_header_symbol('stdlib.h', 'secure_getenv', prefix : '#define _GNU_SOURCE')
config_h.set('HAVE_SECURE_GETENV', 1)
endif
common_arguments = [
'-Wshadow',
'-include', meson.current_build_dir() / 'config.h',
]
c_arguments = []
cpp_arguments = []
if cc.get_id() == 'clang'
if cc.version().version_compare('<9')
error('clang version is too old, libcamera requires 9.0 or newer')
endif
# Turn _FORTIFY_SOURCE by default on optimised builds (as it requires -O1
# or higher). This is needed on clang only as gcc enables it by default.
if get_option('optimization') != '0'
common_arguments += [
'-D_FORTIFY_SOURCE=2',
]
endif
# Use libc++ by default if available instead of libstdc++ when compiling
# with clang.
if cc.find_library('libc++', required: false).found()
cpp_arguments += [
'-stdlib=libc++',
]
endif
cpp_arguments += [
'-Wextra-semi',
'-Wthread-safety',
]
endif
if cc.get_id() == 'gcc'
if cc.version().version_compare('<8')
error('gcc version is too old, libcamera requires 8.0 or newer')
endif
# On gcc 8, the file system library is provided in a separate static
# library.
if cc.version().version_compare('<9')
cpp_arguments += [
'-lstdc++fs',
]
endif
# gcc 7.1 introduced processor-specific ABI breakages related to parameter
# passing on ARM platforms. This generates a large number of messages
# during compilation. Silence them.
if host_machine.cpu_family() == 'arm'
cpp_arguments += [
'-Wno-psabi',
]
endif
endif
# We use C99 designated initializers for arrays as C++ has no equivalent
# feature. Both gcc and clang support this extension, but recent
# versions of clang generate a warning that needs to be disabled.
if cc.has_argument('-Wno-c99-designator')
common_arguments += [
'-Wno-c99-designator',
]
endif
c_arguments += common_arguments
cpp_arguments += common_arguments
add_project_arguments(c_arguments, language : 'c')
add_project_arguments(cpp_arguments, language : 'cpp')
add_project_link_arguments(cpp_arguments, language : 'cpp')
libcamera_includes = include_directories('include')
# Sub-directories fill py_modules with their dependencies.
py_modules = []
# Libraries used by multiple components
liblttng = cc.find_library('lttng-ust', required : get_option('tracing'))
# Pipeline handlers
#
# Tests require the vimc pipeline handler, incl/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* viewfinder.h - qcam - Viewfinder base class
*/
#pragma once
#include <QImage>
#include <QList>
#include <QSize>
#include <libcamera/formats.h>
#include <libcamera/framebuffer.h>
class Image;
class ViewFinder
{
public:
virtual ~ViewFinder() = default;
virtual const QList<libcamera::PixelFormat> &nativeFormats() const = 0;
virtual int setFormat(const libcamera::PixelFormat &format, const QSize &size,
unsigned int stride) = 0;
virtual void render(libcamera::FrameBuffer *buffer, Image *image) = 0;
virtual void stop() = 0;
virtual QImage getCurrentImage() = 0;
};