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setup.py
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setup.py
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import argparse
import os
import pathlib
import platform
import re
import shlex
import subprocess
import sys
from Cython.Build import cythonize
from Cython.Compiler.AutoDocTransforms import EmbedSignature
from setuptools import Extension, find_packages, setup
FFMPEG_LIBRARIES = [
"avformat",
"avcodec",
"avdevice",
"avutil",
"avfilter",
"swscale",
"swresample",
]
# Monkey-patch Cython to not overwrite embedded signatures.
old_embed_signature = EmbedSignature._embed_signature
def new_embed_signature(self, sig, doc):
# Strip any `self` parameters from the front.
sig = re.sub(r"\(self(,\s+)?", "(", sig)
# If they both start with the same signature; skip it.
if sig and doc:
new_name = sig.split("(")[0].strip()
old_name = doc.split("(")[0].strip()
if new_name == old_name:
return doc
if new_name.endswith("." + old_name):
return doc
return old_embed_signature(self, sig, doc)
EmbedSignature._embed_signature = new_embed_signature
def get_config_from_directory(ffmpeg_dir):
"""
Get distutils-compatible extension arguments for a specific directory.
"""
if not os.path.isdir(ffmpeg_dir):
print("The specified ffmpeg directory does not exist")
exit(1)
include_dir = os.path.join(FFMPEG_DIR, "include")
library_dir = os.path.join(FFMPEG_DIR, "lib")
if not os.path.exists(include_dir):
include_dir = FFMPEG_DIR
if not os.path.exists(library_dir):
library_dir = FFMPEG_DIR
return {
"include_dirs": [include_dir],
"libraries": FFMPEG_LIBRARIES,
"library_dirs": [library_dir],
}
def get_config_from_pkg_config():
"""
Get distutils-compatible extension arguments using pkg-config.
"""
try:
raw_cflags = subprocess.check_output(
["pkg-config", "--cflags", "--libs"]
+ ["lib" + name for name in FFMPEG_LIBRARIES]
)
except FileNotFoundError:
print("pkg-config is required for building PyAV")
exit(1)
except subprocess.CalledProcessError:
print("pkg-config could not find libraries {}".format(FFMPEG_LIBRARIES))
exit(1)
known, unknown = parse_cflags(raw_cflags.decode("utf-8"))
if unknown:
print("pkg-config returned flags we don't understand: {}".format(unknown))
if "-pthread" in unknown:
print("Building PyAV against static FFmpeg libraries is not supported.")
exit(1)
return known
def parse_cflags(raw_flags):
parser = argparse.ArgumentParser(add_help=False)
parser.add_argument("-I", dest="include_dirs", action="append")
parser.add_argument("-L", dest="library_dirs", action="append")
parser.add_argument("-l", dest="libraries", action="append")
parser.add_argument("-D", dest="define_macros", action="append")
parser.add_argument("-R", dest="runtime_library_dirs", action="append")
raw_args = shlex.split(raw_flags.strip())
args, unknown = parser.parse_known_args(raw_args)
config = {k: v or [] for k, v in args.__dict__.items()}
for i, x in enumerate(config["define_macros"]):
parts = x.split("=", 1)
value = x[1] or None if len(x) == 2 else None
config["define_macros"][i] = (parts[0], value)
return config, " ".join(shlex.quote(x) for x in unknown)
# Parse command-line arguments.
FFMPEG_DIR = None
for i, arg in enumerate(sys.argv):
if arg.startswith("--ffmpeg-dir="):
FFMPEG_DIR = arg.split("=")[1]
del sys.argv[i]
# Do not cythonize or use pkg-config when cleaning.
use_pkg_config = platform.system() != "Windows"
if len(sys.argv) > 1 and sys.argv[1] == "clean":
cythonize = lambda ext, **kwargs: [ext]
use_pkg_config = False
# Locate FFmpeg libraries and headers.
if FFMPEG_DIR is not None:
extension_extra = get_config_from_directory(FFMPEG_DIR)
elif use_pkg_config:
extension_extra = get_config_from_pkg_config()
else:
extension_extra = {
"include_dirs": [],
"libraries": FFMPEG_LIBRARIES,
"library_dirs": [],
}
# Construct the modules that we find in the "av" directory.
ext_modules = []
for dirname, dirnames, filenames in os.walk("av"):
for filename in filenames:
# We are looking for Cython sources.
if filename.startswith(".") or os.path.splitext(filename)[1] != ".pyx":
continue
pyx_path = os.path.join(dirname, filename)
base = os.path.splitext(pyx_path)[0]
# Need to be a little careful because Windows will accept / or \
# (where os.sep will be \ on Windows).
mod_name = base.replace("/", ".").replace(os.sep, ".")
# Cythonize the module.
ext_modules += cythonize(
Extension(
mod_name,
include_dirs=extension_extra["include_dirs"],
libraries=extension_extra["libraries"],
library_dirs=extension_extra["library_dirs"],
sources=[pyx_path],
),
compiler_directives=dict(
c_string_type="str",
c_string_encoding="ascii",
embedsignature=True,
language_level=2,
),
build_dir="src",
include_path=["include"],
)
# Read package metadata
about = {}
about_file = os.path.join(os.path.dirname(__file__), "av", "about.py")
with open(about_file, encoding="utf-8") as fp:
exec(fp.read(), about)
package_folders = pathlib.Path("av").glob("**/")
package_data = {".".join(pckg.parts): ["*.pxd"] for pckg in package_folders}
setup(
name="av",
version=about["__version__"],
description="Pythonic bindings for FFmpeg's libraries.",
author="Mike Boers",
author_email="pyav@mikeboers.com",
url="https://github.com/PyAV-Org/PyAV",
packages=find_packages(exclude=["build*", "examples*", "scratchpad*", "tests*"]),
package_data=package_data,
zip_safe=False,
ext_modules=ext_modules,
test_suite="tests",
entry_points={
"console_scripts": [
"pyav = av.__main__:main",
],
},
classifiers=[
"Development Status :: 5 - Production/Stable",
"Intended Audience :: Developers",
"License :: OSI Approved :: BSD License",
"Natural Language :: English",
"Operating System :: MacOS :: MacOS X",
"Operating System :: POSIX",
"Operating System :: Unix",
"Operating System :: Microsoft :: Windows",
"Programming Language :: Cython",
"Programming Language :: Python :: 3.7",
"Programming Language :: Python :: 3.8",
"Programming Language :: Python :: 3.9",
"Programming Language :: Python :: 3.10",
"Programming Language :: Python :: 3.11",
"Topic :: Software Development :: Libraries :: Python Modules",
"Topic :: Multimedia :: Sound/Audio",
"Topic :: Multimedia :: Sound/Audio :: Conversion",
"Topic :: Multimedia :: Video",
"Topic :: Multimedia :: Video :: Conversion",
],
)