61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
"""PortAudio/PyAudio 启动前调整动态库搜索路径。
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conda 环境下 `.../envs/xxx/lib` 里的 libasound 会到同前缀的 alsa-lib 子目录找插件，
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该目录常缺 libasound_module_*.so，日志里刷屏且采集电平可能异常。
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处理：1) 去掉仅含插件目录的路径；2) 把系统 /usr/lib/<triplet> 插到 LD_LIBRARY_PATH 最前，
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让动态链接优先用系统的 libasound。"""
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from __future__ import annotations
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import os
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import platform
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def strip_conda_alsa_from_ld_library_path() -> None:
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ld = os.environ.get("LD_LIBRARY_PATH", "")
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if not ld:
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return
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parts: list[str] = []
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for p in ld.split(":"):
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if not p:
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continue
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pl = p.lower()
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if "conda" in pl or "miniconda" in pl or "mamba" in pl:
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if "alsa-lib" in pl or "alsa_lib" in pl:
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continue
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parts.append(p)
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if parts:
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os.environ["LD_LIBRARY_PATH"] = ":".join(parts)
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else:
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os.environ.pop("LD_LIBRARY_PATH", None)
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def prepend_system_lib_dirs_for_alsa() -> None:
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"""Linux：把系统 lib 目录放在 LD_LIBRARY_PATH 最前面。"""
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if platform.system() != "Linux":
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return
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triplet = {
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"aarch64": ("/usr/lib/aarch64-linux-gnu", "/lib/aarch64-linux-gnu"),
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"x86_64": ("/usr/lib/x86_64-linux-gnu", "/lib/x86_64-linux-gnu"),
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"amd64": ("/usr/lib/x86_64-linux-gnu", "/lib/x86_64-linux-gnu"),
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}.get(platform.machine().lower())
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if not triplet:
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return
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prepend: list[str] = []
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for d in triplet:
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if os.path.isdir(d):
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prepend.append(d)
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if not prepend:
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return
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rest = [p for p in os.environ.get("LD_LIBRARY_PATH", "").split(":") if p]
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out: list[str] = []
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for p in prepend + rest:
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if p not in out:
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out.append(p)
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os.environ["LD_LIBRARY_PATH"] = ":".join(out)
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def fix_ld_path_for_portaudio() -> None:
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prepend_system_lib_dirs_for_alsa()
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strip_conda_alsa_from_ld_library_path()
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