windows: Install dav1d in the docker image

Also to be used in the gst-plugins-rs CI

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1084>

ci/images_template.yml

@@ -1,4 +1,4 @@
 variables:
-  GST_RS_IMG_TAG: '2022-08-23.2'
+  GST_RS_IMG_TAG: '2022-08-31.1'
   GST_RS_STABLE: '1.63.0'
   GST_RS_MSRV: '1.60.0'

ci/windows-docker/Dockerfile

@@ -9,15 +9,16 @@ SHELL ["powershell","-NoLogo", "-NonInteractive", "-Command"]
 ARG DEFAULT_BRANCH="main"
 ARG RUST_VERSION="invalid"
 
-RUN choco install -y pkgconfiglite
+RUN choco install -y pkgconfiglite nasm llvm
 
 # https://stackoverflow.com/a/50716450
-RUN setx PATH '%PATH%;C:\gst-install\bin'
+RUN setx PATH '%PATH%;C:\Program Files\NASM;C:\gst-install\bin'
 ENV PKG_CONFIG_PATH="C:\gst-install\lib\pkgconfig"
 
-COPY install_gst.ps1 install_gtk.ps1 C:\
+COPY install_gst.ps1 install_gtk.ps1 install_dav1d.ps1 C:\
 RUN C:\install_gst.ps1
 RUN C:\install_gtk.ps1
+RUN C:\install_dav1d.ps1
 
 RUN Invoke-WebRequest -Uri https://win.rustup.rs/x86_64 -OutFile C:\rustup-init.exe
 RUN C:\rustup-init.exe -y --profile minimal --default-toolchain $env:RUST_VERSION

ci/windows-docker/install_dav1d.ps1

@@ -0,0 +1,28 @@
+[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;
+
+# Download gstreamer and all its subprojects
+git clone -b 1.0.0 --depth 1 https://code.videolan.org/videolan/dav1d.git C:\dav1d
+if (!$?) {
+  Write-Host "Failed to clone dav1d"
+  Exit 1
+}
+
+Set-Location C:\dav1d
+
+# This is fine, we are not going to use the GtkMedia* apis
+$env:MESON_ARGS = "--prefix=C:\gst-install\"
+
+Write-Output "Building dav1d"
+cmd.exe /C "C:\BuildTools\Common7\Tools\VsDevCmd.bat -host_arch=amd64 -arch=amd64 && meson _build $env:MESON_ARGS && meson compile -C _build && ninja -C _build install"
+
+if (!$?) {
+  Write-Host "Failed to build and install dav1d"
+  Exit 1
+}
+
+cd C:\
+cmd /c rmdir /s /q  C:\dav1d
+if (!$?) {
+  Write-Host "Failed to remove dav1d checkout"
+  Exit 1
+}