opus: pre-download dnn model before autogen

this will prevent it from constantly redownloading everytime since
we clean the git dirs

build/media-suite_compile.sh

@@ -801,6 +801,14 @@ if enabled libopus && do_vcs "$SOURCE_REPO_OPUS"; then
     do_pacman_remove opus
     do_pacman_install wget # autogen calls wget, but msys/wget seems to fail for some people, while the mingw64 one works
     do_uninstall include/opus "${_check[@]}"
+    (
+        sha=$(grep dnn/download_model.sh autogen.sh | awk -F'"' '{print $2}')
+        model=opus_data-${sha:-735117b}.tar.gz
+        pushd . > /dev/null
+        do_wget -r -q -n "https://media.xiph.org/opus/models/$model"
+        popd > /dev/null || return 1
+        ln -s "$LOCALBUILDDIR/$model" .
+    )
     do_autogen
     do_separate_confmakeinstall --disable-{stack-protector,doc,extra-programs}
     do_checkIfExist

build/media-suite_helper.sh

@@ -417,14 +417,15 @@ check_hash() {
 
 # get wget download
 do_wget() {
-    local nocd=false norm=false quiet=false notmodified=false hash
+    local nocd=false norm=false quiet=false notmodified=false noextract=false hash
     while true; do
         case $1 in
         -c) nocd=true && shift ;;
         -r) norm=true && shift ;;
         -q) quiet=true && shift ;;
         -h) hash="$2" && shift 2 ;;
         -z) notmodified=true && shift ;;
+        -n) noextract=true && shift ;;
         --)
             shift
             break
@@ -493,7 +494,7 @@ do_wget() {
     done
 
     $norm || add_to_remove "$(pwd)/$archive"
-    do_extract "$archive" "$dirName"
+    $noextract || do_extract "$archive" "$dirName"
     ! $norm && [[ -n $dirName ]] && ! $nocd && add_to_remove
     [[ -z $response_code || $response_code != "304" ]] && return 0
 }