Fix architecture detection on Windows ARM64 (#631)

Author: bwoodsend

.github/workflows/sounddevice-data.yml

@@ -16,6 +16,8 @@ jobs:
             arch: 'x86'
           - os: windows-11-arm
             arch: 'arm64'
+          - os: windows-11-arm
+            arch: 'x64'
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Python
@@ -25,7 +27,7 @@ jobs:
           architecture: ${{ matrix.arch }}
       - name: Double-check Python version
         run: |
-          python --version
+          python --version --version
       - name: Clone Git repository (with submodules)
         uses: actions/checkout@v7
         with:
@@ -36,6 +38,7 @@ jobs:
         run: |
           python -m pip install .
       - name: Import module
+        shell: bash
         run: |
           python -m sounddevice
           python -c "import sounddevice as sd; print(sd._libname)"
@@ -45,6 +48,7 @@ jobs:
           python -c "import sounddevice as sd; assert not any(a['name'] == 'ASIO' for a in sd.query_hostapis())"
       - name: Import module (using the ASIO DLL)
         if: startsWith(matrix.os, 'windows')
+        shell: bash
         env:
           SD_ENABLE_ASIO: 1
         run: |

setup.py

@@ -1,5 +1,6 @@
 import os
 import platform
+import sysconfig
 from setuptools import setup
 
 MACOSX_VERSIONS = '.'.join([
@@ -11,7 +12,8 @@
 system = os.environ.get('PYTHON_SOUNDDEVICE_PLATFORM', platform.system())
 machine = platform.machine().lower()
 architecture0 = os.environ.get('PYTHON_SOUNDDEVICE_ARCHITECTURE',
-    'arm64' if machine in ['arm64', 'aarch64'] else platform.architecture()[0])
+    'arm64' if 'arm64' in sysconfig.get_platform() or 'aarch64' in sysconfig.get_platform()
+    else platform.architecture()[0])
 
 if system == 'Darwin':
     libname = 'libportaudio.dylib'

src/sounddevice.py

@@ -55,6 +55,7 @@
 import os as _os
 import platform as _platform
 import sys as _sys
+import sysconfig as _sysconfig
 from ctypes.util import find_library as _find_library
 from _sounddevice import ffi as _ffi
 
@@ -75,7 +76,7 @@
     if _platform.system() == 'Darwin':
         _libname = 'libportaudio.dylib'
     elif _platform.system() == 'Windows':
-        if _platform.machine().lower() in ('arm64', 'aarch64'):
+        if 'arm64' in _sysconfig.get_platform() or 'aarch64' in _sysconfig.get_platform():
             _platform_suffix = 'arm64'
         else:
             _platform_suffix = _platform.architecture()[0]