Cross-build Windows native bundle on Linux

native/age_movie_ffmpeg/bootstrap-win64.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+repo_root="$(cd -- "$script_dir/../.." && pwd)"
+destination="${1:-$repo_root/build/ffmpeg-sdk}"
+manifest="$script_dir/dependency-win64.json"
+
+manifest_value() {
+    python3 -c 'import json, sys; print(json.load(open(sys.argv[1], encoding="utf-8"))[sys.argv[2]])' \
+        "$manifest" "$1"
+}
+
+for command in python3 curl sha256sum awk; do
+    command -v "$command" >/dev/null 2>&1 || {
+        echo "required command was not found: $command" >&2
+        exit 1
+    }
+done
+
+archive="$(manifest_value archive)"
+url="$(manifest_value url)"
+expected_hash="$(manifest_value sha256)"
+archive_root="${archive%.zip}"
+download_directory="$repo_root/build/downloads"
+archive_path="$download_directory/$archive"
+sdk_root="$destination/$archive_root"
+
+mkdir -p -- "$download_directory" "$destination"
+if [[ ! -f "$archive_path" ]]; then
+    curl --fail --location --retry 3 --output "$archive_path" "$url"
+fi
+
+actual_hash="$(sha256sum "$archive_path" | awk '{ print $1 }')"
+if [[ "$actual_hash" != "$expected_hash" ]]; then
+    echo "FFmpeg archive SHA-256 mismatch: expected $expected_hash, got $actual_hash" >&2
+    exit 1
+fi
+
+if [[ ! -d "$sdk_root" ]]; then
+    python3 -m zipfile -e "$archive_path" "$destination"
+fi
+
+for required in \
+    "$sdk_root/include/libavformat/avformat.h" \
+    "$sdk_root/lib/libavformat.dll.a" \
+    "$sdk_root/lib/libavcodec.dll.a" \
+    "$sdk_root/lib/libavutil.dll.a" \
+    "$sdk_root/lib/libswscale.dll.a" \
+    "$sdk_root/lib/libswresample.dll.a" \
+    "$sdk_root/bin/ffmpeg.exe" \
+    "$sdk_root/LICENSE.txt"; do
+    if [[ ! -e "$required" ]]; then
+        echo "FFmpeg SDK file was not found after extraction: $required" >&2
+        exit 1
+    fi
+done
+
+printf '%s\n' "$sdk_root"