build portaudio directly to support ASIO

.github/workflows/python-app.yml

@@ -25,7 +25,6 @@ jobs:
           brew update
           brew install portaudio libsndfile libsamplerate pkg-config
 
-      # Use MSYS2 for Windows audio library build with all codec dependencies
       - name: Set up MSYS2 (Windows)
         if: runner.os == 'Windows'
         uses: msys2/setup-msys2@v2
@@ -44,6 +43,30 @@ jobs:
             mingw-w64-x86_64-mpg123
             mingw-w64-x86_64-lame
             mingw-w64-x86_64-speex
+            mingw-w64-x86_64-cmake
+
+      - name: Build PortAudio with ASIO (Windows)
+        if: runner.os == 'Windows'
+        shell: msys2 {0}
+        run: |
+          # Download PortAudio source
+          curl -L http://files.portaudio.com/archives/pa_stable_v190700_20210406.tgz -o portaudio.tgz
+          tar -xzf portaudio.tgz
+          cd portaudio
+
+          # Configure with ASIO support
+          mkdir build && cd build
+          cmake .. \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DPA_USE_ASIO=ON \
+            -DPA_USE_DS=ON \
+            -DPA_USE_WMME=ON \
+            -DPA_USE_WASAPI=ON \
+            -DCMAKE_INSTALL_PREFIX=/mingw64
+
+          # Build and install
+          make -j$(nproc)
+          make install
 
       - name: Build static audio library (Windows)
         if: runner.os == 'Windows'

libs/audio/Makefile

@@ -18,7 +18,7 @@ endef
 ifneq (,$(findstring MINGW,$(UNAME_S)))
     CC = x86_64-w64-mingw32-gcc
     LIBNAME = libaudio.dll
-    CFLAGS = -Wall -Wextra -O3 -fPIC -std=c99 -I/mingw64/include -m64
+    CFLAGS = -Wall -Wextra -O3 -fPIC -std=c99 -I/mingw64/include -m64 -DPA_USE_ASIO=1
     LDFLAGS = -shared -Wl,--export-all-symbols -static-libgcc -static-libstdc++ -L/mingw64/lib -m64
 
     # Core libraries with full dependency chain (order is critical!)