// ====================================================================
        // private メンバー関数
        // ====================================================================

#if DEBUGz
        // ====================================================================
        // デバッグ専用
        // ====================================================================

        // --------------------------------------------------------------------
        // サムネイル生成テスト
        // --------------------------------------------------------------------
        private static void TestCreateThumbnail()
        {
            // 横長・縮小あり
            using FileStream y1 = new FileStream(ServerConstants.FOLDER_NAME_SAMPLE_DATA_IMAGES + "Test_430x177.png", FileMode.Open);
            File.WriteAllBytes("TestGen_430x177_square.png", ServerCommon.CreateThumbnail(y1, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, true));
            File.WriteAllBytes("TestGen_430x177_rect.png", ServerCommon.CreateThumbnail(y1, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, false));

            // 横長・縮小なし
            using FileStream y0 = new FileStream(ServerConstants.FOLDER_NAME_SAMPLE_DATA_IMAGES + "Test_150x62.png", FileMode.Open);
            File.WriteAllBytes("TestGen_150x62_square.png", ServerCommon.CreateThumbnail(y0, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, true));
            File.WriteAllBytes("TestGen_150x62_rect.png", ServerCommon.CreateThumbnail(y0, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, false));

            // 縦長・縮小あり
            using FileStream t1 = new FileStream(ServerConstants.FOLDER_NAME_SAMPLE_DATA_IMAGES + "Test_250x468.png", FileMode.Open);
            File.WriteAllBytes("TestGen_250x468_square.png", ServerCommon.CreateThumbnail(t1, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, true));
            File.WriteAllBytes("TestGen_250x468_rect.png", ServerCommon.CreateThumbnail(t1, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, false));

            // 縦長・縮小なし
            using FileStream t0 = new FileStream(ServerConstants.FOLDER_NAME_SAMPLE_DATA_IMAGES + "Test_43x80.png", FileMode.Open);
            File.WriteAllBytes("TestGen_43x80_square.png", ServerCommon.CreateThumbnail(t0, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, true));
            File.WriteAllBytes("TestGen_43x80_rect.png", ServerCommon.CreateThumbnail(t0, ServerConstants.MIME_TYPE_PNG, MOVIE_THUMB_WIDTH_MAX, MOVIE_THUMB_HEIGHT_MAX, false));
        }