gst-plugins-rs/dependencies.py
Thibault Saunier 3c650a9544 meson: Handle features detection for gst version in a script
Instead of having a big list of features in the meson.build file, we
reuse the information from the Cargo.toml files

This refactors the dependencies to handle that new use case

There were issue in previous handling and only activating the `webrtc`
plugin was failing because the list of features incorrect.

Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/295

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1129>
2023-03-14 13:36:15 +02:00

112 lines
3.5 KiB
Python
Executable file

#!/usr/bin/env python3
# Parse Cargo.toml files for each plugin to collect their external dependencies.
# Meson will lookup those dependencies using pkg-config to be able to link
# static Rust plugins into gst-full.
from argparse import ArgumentParser
from pathlib import Path
import sys
try:
# Python11 stdlib
import tomllib
except ImportError:
import tomli as tomllib
PARSER = ArgumentParser()
PARSER.add_argument('src_dir', type=Path)
PARSER.add_argument('plugins', nargs='*')
PARSER.add_argument('--features', action="store_true", help="Get list of features to activate")
PARSER.add_argument('--gst-version', help="Get list of features to activate")
# Map plugin name to directory name, for those that does not match.
RENAMES = {
'rsaudiofx': 'audiofx',
'rsfile': 'file',
'rsflv': 'flavors',
'rsrtp': 'rtp',
'rswebp': 'webp',
'rsonvif': 'onvif',
'rstracers': 'tracers',
'rsclosedcaption': 'closedcaption',
'rswebrtc': 'webrtc',
'rspng': 'png',
'rsvideofx': 'videofx',
'textahead': 'ahead',
'textwrap': 'wrap',
}
class CargoAnalyzer:
def __init__(self):
self.src_dir = None
self.plugins = None
self.features = False
self.gst_version = "1.18"
def extract_version(self, feature_name):
if feature_name.startswith('v'):
verindex = 1
elif feature_name.startswith('gst'):
verindex = 3
else:
return None
(majver, minver) = feature_name[verindex:].split("_")
return (int(majver), int(minver))
def extract_features(self, cargo_data):
features = cargo_data['features']
wanted_features = set()
gst_version_major = int(self.gst_version.split('.')[0])
gst_version_minor = int(self.gst_version.split('.')[1])
for (name, value) in features.items():
version = self.extract_version(name)
if version is None:
continue
(majver, minver) = version
if gst_version_major < majver or gst_version_minor < minver:
continue
wanted_features |= set(value)
if name.startswith("gst"):
# Required for some reason for rswebrtc which has a specific feature
wanted_features |= {f"{cargo_data['package']['name']}/{name}"}
return wanted_features
def run(self):
with (opts.src_dir / 'Cargo.toml').open('rb') as f:
crates = tomllib.load(f)['workspace']['members']
res = set()
for name in opts.plugins:
if name.startswith('gst'):
name = name[3:]
name = RENAMES.get(name, name)
crate_path = None
for crate in crates:
if Path(crate).name == name:
crate_path = opts.src_dir / crate / 'Cargo.toml'
assert crate_path
with crate_path.open('rb') as f:
data = tomllib.load(f)
if opts.features:
res |= self.extract_features(data)
else:
try:
requires = data['package']['metadata']['capi']['pkg_config']['requires_private']
except KeyError:
continue
res.update([i.strip().replace('>', "|>").replace('<', "|<").replace("==", "|==") for i in requires.split(',')])
return res
if __name__ == "__main__":
analyzer = CargoAnalyzer()
opts = PARSER.parse_args(namespace=analyzer)
print(','.join(analyzer.run()))