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The README.rst file contains the getting started instructions, but lacks
a simple way to test libcamera. Add a short section about basic cam
usage.
Suggested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
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Ubuntu 22.04 LTS has been released with meson 0.61.2, and it is easy to
install a recent version of meson with python-pip, so let's update the
required meson version to get rid of the Android compilation
limitation.
Additionally, going to meson 0.55 gives the ability to have patch files
for git-wraps which is useful for Python bindings.
0.56 brings meson.project_source_root() and meson.project_build_root(),
allowing us to get rid of the deprecated meson.source_root() and
meson.build_root().
So, let's update the required meson version to 0.56.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Introduce YamlParser as a helper to convert contents of a yaml file to
a tree based structure for easier reading, and to avoid writing parser
with raw yaml tokens. The class is based on libyaml, and only support
reading but not writing a yaml file.
The interface is inspired by Json::Value class from jsoncpp:
http://jsoncpp.sourceforge.net/class_json_1_1_value.html
Signed-off-by: Han-Lin Chen <hanlinchen@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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There have been many reports of facing difficulties with the gstreamer
element and getting the libcamerasrc to successfully negotiate with
other gstreamer elements.
This is often due to the current limitations on colorimetry and frame
rate support in the element, and can usually be worked around by
specifying those explicitly in the caps.
Provide a tested example to capture, encode, and stream images as jpeg
to a remote device in the gstreamer section of the getting started
readme.
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Building the libcamera Android layer currently makes use of features
from meson 0.55. The core libcamera framework in the default configuration
without android enabled uses the 'summary' feature available in 0.53, and
is the lowest supportable meson version if the Android HAL is excluded.
Ubuntu 20.04 LTS currently provides meson 0.53 and represents an
acceptable minimum version to support. Platforms utilising the Android
component will have full control over their build environment and can
ensure that they provide a more recent version of meson.
Reduce the supported meson version for the project to 0.53 to facilitate
building on more distributions without having to manually update the
meson package.
Meson will output a warning that features not available in 0.53 are used
if the Android HAL is enabled. This is considered as an acceptable
middleground to improve the experience on the latest Ubuntu LTS, until
22.04 LTS is released and provides a newer meson version.
Signed-off-by: Christian Rauch <Rauch.Christian@gmx.de>
[Kieran: Add comment about the android meson requirements]
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The initial commit a146cdbf20cb ("readme: Provide build requirements")
used tabs for all the dependencies. The first time a line was edited in
commit 2de78434ca71 ("meson: Bump required version to 0.47") tabs were
not kept. This makes them all consistent.
Signed-off-by: Johann Koenig <johannkoenig@google.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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libgtest-dev is provided as a static library at least by Debian 10.
The compiler and linker to create the static library might be
different from ones used for libcamera. This causes a problem
upon linking.
This puts gtest code to subprojects, builds the code and link it
for lc-compliance. However, libgtest is locally built as a library on
ChromeOS and thus the used compiler and linker are the same as one
used for libcamera. We don't do these on ChromeOS build environment.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Tested-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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libcamera now has the ability to use libdw and libunwind to generate
backtraces, in addition to the glibc backtrace() function. libdw
provides the most detailed output and is highly recommended, but is
limited to parsing backtraces, it doesn't support capturing them.
libunwind and backtrace() provide both features. If backtrace() is
available, libunwind will not bring any improvement.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
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When building the documentaion with Doxygen, an error will be
reported if latex can not find the extra packages provided by
texlive-latex-extra.
While this package is optional, document this requirement for
Documentation.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Problems with libcamerasrc are reported quite frequently. To help users
diagnosing them, document how to obtain libcamerasrc debug messages
through GST_DEBUG.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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libevent-dev and libgtest-dev are required for lc-compliance.
Write them into lc-compliance dependencies in README.rst.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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When the libcamera project was started, we had no public git tree hosted
on git.libcamera.org. The problem has been addressed a while ago, and
the git.linuxtv.org libcamera repository is now a mirror of the main git
tree. The mirror is useful to benefit from the linuxtv.org automated
compile tests, but it can also confuse users who don't know where the
official version is. To try and clarify this, use the git.libcamera.org
URL consistently through the project.
This doesn't void the validatity of the linuxtv.org repository which
will continue to mirror the libcamera.org repository.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
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While the distribution is unspecified, The README.rst gives
debian/ubuntu named dependencies for all except the android
requirements.
Update the android dependencies to match the others, by showing that the
-dev package is required.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The Gstreamer gstlibcamerasrc element operates better with the
glimagesink, as it can perform direct renders or hardware accellerated
image format conversion.
Further extend the sample commands to demonstrate how to specify a fixed
width and height parameter to the pipeline.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Add a CameraHalConfig class to the Android Camera3 HAL layer.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
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Add to the README.rst file the list of depdendencies for the
Android Camera3 HAL.
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
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While installing meson using pip3 install --user meson, due to python
path issues, build.ninja can't be located by ninja. meson generates
ninja files fine, but then when you run ninja, it is unable to find
meson's build.ninja python module due to path issues.
It gives the following error on ninja -C build install:
ninja: Entering directory `build'
ninja: error: loading 'build.ninja': No such file or directory
After uninstalling meson using pip3 and installing it again using pip
without --user argument solved the issue.
Add a troubleshooting section to the readme to describe this issue and
suggest possible solutions.
Signed-off-by: Vedant Paranjape <vedantparanjape160201@gmail.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
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Fix some typos and some literals using ` instead of ``.
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Reviewed-by: Sebastian Fricke <sebastian.fricke@posteo.net>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The packages required for tracing libcamera projects were incorrectly
specified.
Update with the correct prefix for the dev package on liblttng-ust-dev
and also provide the lttng-tools package which provides the utilities
required to handle tracing.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Android HAL adaptation layer may need image processing, for
example, scaling and format conversion. Libyuv is a general image
processing. This adds libyuv to subprojects, so that it is forked
locally and can be used with Android HAL implementation code.
Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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To prepare for removal of the EventDispatcher from the libcamera public
API, switch to libevent to handle the event loop.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Specify in the readme and meson file that we depend on python3-ply and
python3-jinja2 for generating the IPA interface.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Implement tracing infrastructure in libcamera. It takes .tp files, as
required by lttng, and generates a tracepoint header and C file, as lttng
requires. meson is updated accordingly to get it to compile with the
rest of libcamera. Update the documentation accordingly.
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Version 0.51 allows, among others, checking for python modules, which is
a required feature.
It is also now easily accessible: it is in stable distros such as Debian
testing, or in pip:
https://tracker.debian.org/pkg/meson
https://pypi.org/project/meson/
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Doxygen fails to create the documentation with this message:
[145/276] Generating doxygen with a custom command
sh: 1: dot: not found
error: Problems running dot: exit code=127, command='dot', arguments='"/home/user/libcamera/build/Documentation/api-html/inline_dotgraph_1.dot" -Tpng -o "/home/user/libcamera/build/Documentation/api-html/dot_inline_dotgraph_1.png"'
sh: 1: dot: not found
error: Problems running dot: exit code=127, command='dot', arguments='"/home/user/libcamera/build/Documentation/api-html/inline_dotgraph_1.dot" -Tcmapx -o "/home/user/libcamera/build/Documentation/api-html/dot_inline_dotgraph_1.map"'
[276/276] Linking target test/utils
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Without it:
Run-time dependency libtiff-4 found: NO (tried pkgconfig and cmake)
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Without it:
Program /usr/lib/x86_64-linux-gnu/qt5/bin/lrelease found: NO
Program lrelease-qt5 found: NO
Program lrelease found: NO found but need: '== 5.14.2'
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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pkg-config it is not only used to detect libudev-dev, it is used for
detecting gstreamer and others. So it is more correct to place it on the
Meson Build system section.
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Raspberry Pi IPA, which is enabled by default, requires libboost to
compile.
Specify in the documentation its dependencies and how to disable the
IPA.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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All the dependencies are for libcamera, so we should move all the
packages under this paragraph, or make a paragraph for Meson, and a
second one for python3-yaml. I think the later is more clear.
Signed-off-by: Ricardo Ribalda <ricardo@ribalda.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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IPA module signing is optional, but when not available due to missing
dependencies, we hit failures due to a non fully implemented IPA
isolation. Make module signing mandatory until isolation is functional.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Document the dependency on libgnutls28-dev and openssl for IPA module
signing int he README.rst file. While at it, sort the entries
alphabetically.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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The documentation files are licensed under CC-BY-SA-4.0, but this has
never been specified explicitly. Add corresponding SPDX headers.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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This is a quick startup guide allowing to build and use the GStreamer element
from the libcamera source tree.
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The commit 2de78434ca71 ("meson: Bump required version to 0.47")
included an extra duplicated line (my bad, the issue happened when
applying). Fix it.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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This is needed to use option type 'feature'. This is a tri-state
(auto/enabled/disabled) which comes with utility to enable them all, or
disabled them all to avoid any dynamic selection happening. It can also
be used as value to any "required" field.
This will be used in GStreamer support. If you don't have a recent enough
meson in your distribution, you can always install or upgrade your version
using pip3.
pip3 install --user meson
pip3 install --user --upgrade meson
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Less typing for the same result.
Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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As the Getting Started section is displayed on the website, it should
contain commands related to cloning the repository.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The Getting Started information makes little sense on the generated
documentation, as a developer with documentation compiled from a local
libcamera source tree has already got started. We however want to keep
the information in the top-level README.rst as it is useful there.
In order to hide the Getting Started information from the front page
while keeping it in README.rst, add comments to delimitate sections of
README.rst, and include only a subset of the file in the front page.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Bring back auto-generation of control ids. In this version, both the
header and the source files are generated from a single YAML file that
stores all control definitions. This allows centralising controls in a
single file, while the previous version required keeping both
declarations (in a header) and documentation (in a the source) in sync
manually.
Using YAML as a format to store control definitions is a trade-off
between ease of use (there are many YAML parsers available) and
simplicity (XML was considered, but would have lead to more complex
processing). A new build time dependency is added on python3-yaml, which
should be available as a package in all distributions and build
environments.
The YAML format is likely to change over time as we improve
documentation of controls, the first version simply copies the
information currently available. Future improvements should also include
a YAML schema to validate the YAML source file.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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Provide an initial list of build dependancies for Debian based systems.
Other distributions will be added separately.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Move the introduction content from the index.rst to the README.rst so
that it can also be found quickly from the top level.
Include the README.rst directly into the index.rst to continue serving
it as the front page material.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The Documentation and top-level README both serve to provide information
to new developers and users of libcamera.
Currently our README.md is sparse, and should be expanded with more
useful information such as build requirements as well as compilation
directions.
Any information provided in the README also serves a purpose in the main
documentation and website and could be a cause of duplicated content.
To allow direct integration of the top level README document into our
sphinx documentation (and thus the libcamera.org website) convert the
README.md into ReSTructured text format.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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