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Laurent Pinchart 76b9923e55 libcamera: controls: Avoid exception in ControlInfoMap count() and find()
The ControlInfoMap count() and find() methods use at() to lookup the
control numerical ID in the idmap_. This causes an exception to be
thrown if the ID doesn't exist in the map. Fix it by using the find()
method instead in find(), and rely on idmap_.count() in count().

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2019-11-20 21:47:26 +02:00
Documentation libcamera: bound_method: Define connection type for method invocation 2019-10-29 16:41:33 +02:00
include libcamera: camera: Remove explicit stream to buffer map in requestCompleted signal 2019-11-19 18:30:26 +01:00
licenses licenses: add Apache-2.0 license 2019-08-12 10:34:13 +02:00
package/gentoo/media-libs/libcamera libcamera: controls: Auto-generate control_ids.h and control_ids.cpp 2019-10-05 20:02:51 +03:00
src libcamera: controls: Avoid exception in ControlInfoMap count() and find() 2019-11-20 21:47:26 +02:00
test test: controls: Add ControlInfoMap test 2019-11-20 21:47:22 +02:00
utils utils: checkstyle.py: Add include checker 2019-10-23 17:12:34 +03:00
.clang-format clang-format: Don't indent namespaces 2019-09-23 09:50:08 +03:00
.gitignore git: Add .gitignore file 2018-12-14 13:23:07 +00:00
meson.build meson: Rename 'tests' option to 'test' 2019-08-22 19:35:54 +03:00
meson_options.txt meson: Rename 'tests' option to 'test' 2019-08-22 19:35:54 +03:00
README.rst README: Simplify a bit the build instructions 2019-11-18 02:28:55 +02:00

.. section-begin-libcamera

===========
 libcamera
===========

**A complex camera support library for Linux, Android, and ChromeOS**

Cameras are complex devices that need heavy hardware image processing
operations. Control of the processing is based on advanced algorithms that must
run on a programmable processor. This has traditionally been implemented in a
dedicated MCU in the camera, but in embedded devices algorithms have been moved
to the main CPU to save cost. Blurring the boundary between camera devices and
Linux often left the user with no other option than a vendor-specific
closed-source solution.

To address this problem the Linux media community has very recently started
collaboration with the industry to develop a camera stack that will be
open-source-friendly while still protecting vendor core IP. libcamera was born
out of that collaboration and will offer modern camera support to Linux-based
systems, including traditional Linux distributions, ChromeOS and Android.

.. section-end-libcamera
.. section-begin-getting-started

Getting Started
---------------

To fetch the sources, build and install:

::

  git clone git://linuxtv.org/libcamera.git
  cd libcamera
  meson build
  ninja -C build install

Dependencies
~~~~~~~~~~~~

The following Debian/Ubuntu packages are required for building libcamera.
Other distributions may have differing package names:

A C++ toolchain: [required]
	Either {g++, clang}

for libcamera: [required]
	meson ninja-build python3-yaml

for device hotplug enumeration: [optional]
	pkg-config libudev-dev

for qcam: [optional]
	qtbase5-dev libqt5core5a libqt5gui5 libqt5widgets5

for documentation: [optional]
	python3-sphinx doxygen

.. section-end-getting-started