Fix architecture detection on Windows ARM64

.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@v6
         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

@@ -10,8 +10,18 @@
 # environment variables for cross-platform package creation
 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])
+if 'PYTHON_SOUNDDEVICE_ARCHITECTURE' in os.environ:
+    architecture0 = os.environ['PYTHON_SOUNDDEVICE_ARCHITECTURE']
+elif os.environ.get('PROCESSOR_ARCHITECTURE') in ['AMD64', 'x86', 'ARM64']:
+    architecture0 = {
+        'AMD64': '64bit',
+        'x86': '32bit',
+        'ARM64': 'arm64',
+    }[os.environ['PROCESSOR_ARCHITECTURE']]
+elif machine in ['arm64', 'aarch64']:
+    architecture0 = 'arm64'
+else:
+    architecture0 = platform.architecture()[0]
 
 if system == 'Darwin':
     libname = 'libportaudio.dylib'

src/sounddevice.py

@@ -75,10 +75,16 @@
     if _platform.system() == 'Darwin':
         _libname = 'libportaudio.dylib'
     elif _platform.system() == 'Windows':
-        if _platform.machine().lower() in ('arm64', 'aarch64'):
-            _platform_suffix = 'arm64'
-        else:
-            _platform_suffix = _platform.architecture()[0]
+        _platform_suffix = {
+            'AMD64': '64bit',
+            'x86': '32bit',
+            'ARM64': 'arm64',
+        }.get(_os.environ.get('PROCESSOR_ARCHITECTURE', ''), '')
+        if not _platform_suffix:
+            if _platform.machine().lower() in ('arm64', 'aarch64'):
+                _platform_suffix = 'arm64'
+            else:
+                _platform_suffix = _platform.architecture()[0]
         if 'SD_ENABLE_ASIO' in _os.environ:
             _libname = 'libportaudio' + _platform_suffix + '-asio.dll'
         else: