AcoustID.Tests.TestsHelper.LoadAudioFile C# (CSharp) 메소드

        public static short[] LoadAudioFile(string file)
        {
            string path = AppDomain.CurrentDomain.BaseDirectory;

            path = Path.Combine(path, DATA_PATH);
            path = Path.GetFullPath(Path.Combine(path, file));

            if (!File.Exists(path))
            {
                return null;
            }

            byte[] bytes = File.ReadAllBytes(path);

            short[] shorts = new short[bytes.Length / 2];
            Buffer.BlockCopy(bytes, 0, shorts, 0, bytes.Length);

            return shorts;
        }

        public void TestBasicImage()
        {
            short[] data = TestsHelper.LoadAudioFile("test_stereo_44100.raw");

            Assert.IsNotNull(data, "Failed to load test data (check DATA_PATH in TestsHelper.cs)");

            Image            image             = new Image(12);
            ImageBuilder     image_builder     = new ImageBuilder(image);
            ChromaNormalizer chroma_normalizer = new ChromaNormalizer(image_builder);
            Chroma           chroma            = new Chroma(MIN_FREQ, MAX_FREQ, FRAME_SIZE, SAMPLE_RATE, chroma_normalizer);
            FFT            fft       = new FFT(FRAME_SIZE, OVERLAP, chroma);
            AudioProcessor processor = new AudioProcessor(SAMPLE_RATE, fft);

            processor.Reset(44100, 2);
            processor.Consume(data, data.Length);
            processor.Flush();

            double[][] chromagram =
            {
                new double[] {  0.155444,  0.268618, 0.474445,  0.159887,    0.1761,  0.423511,  0.178933,  0.34433, 0.360958,   0.30421,  0.200217,   0.17072 },
                new double[] {  0.159809,  0.238675, 0.286526,  0.166119,  0.225144,  0.449236,  0.162444, 0.371875, 0.259626,  0.483961,   0.24491,   0.17034 },
                new double[] {  0.156518,  0.271503, 0.256073,  0.152689,  0.174664,   0.52585,  0.141517, 0.253695, 0.293199,  0.332114,  0.442906,  0.170459 },
                new double[] {  0.154183,   0.38592, 0.497451,  0.203884,  0.362608,  0.355691,  0.125349, 0.146766, 0.315143,  0.318133,  0.172547,  0.112769 },
                new double[] {  0.201289,   0.42033, 0.509467,  0.259247,  0.322772,  0.325837,  0.140072, 0.177756, 0.320356,  0.228176,  0.148994,  0.132588 },
                new double[] {  0.187921,  0.302804,  0.46976,  0.302809,  0.183035,  0.228691,  0.206216,  0.35174, 0.308208,  0.233234,  0.316017,  0.243563 },
                new double[] {  0.213539,  0.240346, 0.308664,  0.250704,  0.204879,  0.365022,  0.241966, 0.312579, 0.361886,  0.277293,  0.338944,  0.290351 },
                new double[] {  0.227784,  0.252841, 0.295752,  0.265796,  0.227973,  0.451155,  0.219418, 0.272508, 0.376082,  0.312717,  0.285395,  0.165745 },
                new double[] {  0.168662,  0.180795, 0.264397,  0.225101,  0.562332,   0.33243,  0.236684, 0.199847, 0.409727,  0.247569,   0.21153,  0.147286 },
                new double[] { 0.0491864, 0.0503369, 0.130942, 0.0505802, 0.0694409, 0.0303877, 0.0389852, 0.674067, 0.712933,   0.05762, 0.0245158, 0.0389336 },
                new double[] { 0.0814379, 0.0312366, 0.240546,  0.134609,  0.063374, 0.0466124, 0.0752175, 0.657041, 0.680085, 0.0720311, 0.0249404, 0.0673359 },
                new double[] {  0.139331, 0.0173442,  0.49035,  0.287237, 0.0453947, 0.0873279,   0.15423, 0.447475, 0.621502,  0.127166, 0.0355933,  0.141163 },
                new double[] {  0.115417, 0.0132515, 0.356601,  0.245902, 0.0283943, 0.0588233,  0.117077, 0.499376, 0.715366,  0.100398, 0.0281382, 0.0943482 },
                new double[] {  0.047297, 0.0065354, 0.181074,  0.121455, 0.0135504,  0.030693, 0.0613105, 0.631705,  0.73548, 0.0550565, 0.0128093, 0.0460393 },
            };

            Assert.AreEqual(14, image.Rows, "Numbers of rows doesn't match");
            for (int y = 0; y < 14; y++)
            {
                for (int x = 0; x < 12; x++)
                {
                    Assert.AreEqual(chromagram[y][x], image[y, x], 1e-5);
                }
            }
        }