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meson: Store controls and properties YAML files in variables

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When generating control headers, the YAML files to be used are
determined dynamically based on the selected pipeline handlers. As part
of this process, the build system populates an array of meson File
objects used as an input for the control headers generation custom
target, as well as an array of file names (as strings). The file names
array is later used to generate the control source files for the
libcamera core, as well as the source code for controls support in the
Python bindings.

Both of the source code generators manually turn the array of file names
into File objects. This duplicates code and reduces readability. A third
similar implementation has also been proposed to generate control
support sources in the GStreamer element, making the issue worse.

To simplify this, store File objects instead of file names in the
controls_files array. As the meson configuration summary doesn't support
File objects, create a separate controls_files_names to store the file
names for that sole purpose.

The exact same process occurs for properties, address them the same way.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2024-08-07 19:31:34 +03:00
parent 53108b6ff1
commit b8d318ebeb
4 changed files with 10 additions and 19 deletions
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8
include/libcamera/meson.build
View file

@ -47,7 +47,9 @@ controls_map = {
control_headers = []
controls_files = []
controls_files_names = []
properties_files = []
properties_files_names = []
foreach mode, entry : controls_map
files_list = []
@ -70,10 +72,12 @@ foreach mode, entry : controls_map
outfile = ''
if mode == 'controls'
outfile = 'control_ids.h'
controls_files += files_list
controls_files += input_files
controls_files_names += files_list
else
outfile = 'property_ids.h'
properties_files += files_list
properties_files += input_files
properties_files_names += files_list
endif
template_file = files(outfile + '.in')

4
meson.build
View file

@ -278,8 +278,8 @@ py_mod.find_installation('python3', modules : py_modules)
summary({
'Enabled pipelines': pipelines,
'Enabled IPA modules': enabled_ipa_names,
'Controls files': controls_files,
'Properties files': properties_files,
'Controls files': controls_files_names,
'Properties files': properties_files_names,
'Hotplug support': libudev.found(),
'Tracing support': tracing_enabled,
'Android support': android_enabled,

2
src/libcamera/meson.build
View file

@ -134,8 +134,6 @@ controls_mode_files = {
}
foreach mode, input_files : controls_mode_files
input_files = files(input_files)
if mode == 'controls'
template_file = files('control_ids.cpp.in')
else

15
src/py/libcamera/meson.build
View file

@ -28,32 +28,21 @@ pycamera_sources = files([
# Generate controls
gen_py_controls_input_files = []
gen_py_controls_template = files('py_controls_generated.cpp.in')
gen_py_controls = files('gen-py-controls.py')
foreach file : controls_files
gen_py_controls_input_files += files('../../libcamera/' + file)
endforeach
pycamera_sources += custom_target('py_gen_controls',
input : gen_py_controls_input_files,
input : controls_files,
output : ['py_controls_generated.cpp'],
command : [gen_py_controls, '--mode', 'controls', '-o', '@OUTPUT@',
'-t', gen_py_controls_template, '@INPUT@'])
# Generate properties
gen_py_property_enums_input_files = []
gen_py_properties_template = files('py_properties_generated.cpp.in')
foreach file : properties_files
gen_py_property_enums_input_files += files('../../libcamera/' + file)
endforeach
pycamera_sources += custom_target('py_gen_properties',
input : gen_py_property_enums_input_files,
input : properties_files,
output : ['py_properties_generated.cpp'],
command : [gen_py_controls, '--mode', 'properties', '-o', '@OUTPUT@',
'-t', gen_py_properties_template, '@INPUT@'])