CI: cache AJA build [Win]

Since we must now build the new libajantv2, which takes some 3 minutes,
cache the build in order not to increase the build time.

Also use libajantv2 path for the SDK instead of AJA (doesn't require
unneeded rename), which will be Windows specific.

Only do it in MSW, since the build is slowest. But it can be easily used
also for other platforms.

.github/scripts/install-common-deps.sh

@@ -35,22 +35,25 @@ download_install_cineform() {(
         sudo cmake --install .
 )}
 
-install_aja() {(
+download_build_aja() {
         git clone --depth 1 https://github.com/aja-video/libajantv2.git
-        cd libajantv2
         export MACOSX_DEPLOYMENT_TARGET=10.13 # needed for arm64 mac
         cmake -DAJANTV2_DISABLE_DEMOS=ON  -DAJANTV2_DISABLE_DRIVER=ON \
                 -DAJANTV2_DISABLE_TOOLS=ON  -DAJANTV2_DISABLE_TESTS=ON \
                 -DAJANTV2_DISABLE_PLUGINS=ON  -DAJANTV2_BUILD_SHARED=ON \
-                -DCMAKE_BUILD_TYPE=Release -Bbuild -S.
-        cmake --build build --config Release -j "$(nproc)"
+                -DCMAKE_BUILD_TYPE=Release -Blibajantv2/build -Slibajantv2
+        cmake --build libajantv2/build --config Release -j "$(nproc)"
+}
+
+install_aja() {(
+        if [ ! -d libajantv2 ]; then
+                download_build_aja
+        fi
         if is_win; then
-                cp build/ajantv2/Release/ajantv2.dll /usr/local/bin/
-                cp build/ajantv2/Release/ajantv2.lib /usr/local/lib/
-                cd ..
-                mv libajantv2 "$GITHUB_WORKSPACE/AJA"
+                cp libajantv2/build/ajantv2/Release/ajantv2.dll /usr/local/bin/
+                cp libajantv2/build/ajantv2/Release/ajantv2.lib /usr/local/lib/
         else
-                sudo cmake --install build
+                sudo cmake --install libajantv2/build
         fi
 )}
 

.github/workflows/ccpp.yml

@@ -266,6 +266,14 @@ jobs:
     - name: Download XIMEA
       if: steps.cache-macos-ximea.outputs.cache-hit != 'true'
       run: curl 'https://www.ximea.com/support/attachments/download/37/XIMEA_API_Installer.exe' -o 'C:\XIMEA_API_Installer.exe'
+
+    - name: Cache libajantv2 build
+      id: cache-aja
+      uses: actions/cache@main
+      with:
+        path: 'libajantv2'
+        key: cache-aja-${{ runner.os }}-${{ hashFiles('.github/scripts/install-common-deps.sh') }}
+
     - name: bootsrap
       run: .github/scripts/Windows/prepare.ps1
       shell: pwsh -command ". '{0}'"

data/scripts/build_aja_lib_win64.sh

@@ -31,7 +31,7 @@ function run_vs10
 }
 
 # shellcheck disable=SC2016
-export INCLUDE='src;AJA;AJA\ajantv2\includes;AJA\ajantv2\src\win'
+export INCLUDE='src;libajantv2;libajantv2\ajantv2\includes;libajantv2\ajantv2\src\win'
 
 # rename both aja.cpp because msvc creates object aja.obj for both in the same directory
 cp src/video_capture/aja.cpp aja_capture.cpp
@@ -45,7 +45,7 @@ cmd //Q //C call "$vssetup" "&&" cl //std:c++latest //EHsc //LD //D_XKEYCHECK_H
       src/aja_common.cpp  aja_capture.cpp aja_display.cpp \
       src/video_capture/aja_win32_utils.cpp  src/video_capture_params.cpp \
       src/utils/config_file.cpp  src/utils/video_frame_pool.cpp \
-      AJA/build/ajantv2/Release/ajantv2.lib advapi32.lib Netapi32.lib \
+      libajantv2/build/ajantv2/Release/ajantv2.lib advapi32.lib Netapi32.lib \
       Shell32.lib Shlwapi.lib user32.lib winmm.lib //Feaja
 
 cp aja.lib /usr/local/lib