Пример #1
0
        static void test1(string[] args)
        {
            ProbaFrame gen        = new ProbaFrame(100000000, 0.1);
            Stream     test_frame = gen.generate();

            gen.WriteFile("../../test_frame3.txt");
            //Stream test_frame = new FileStream("../../test_frame2.txt", FileMode.Open, FileAccess.Read);

            MemoryStream temp = new MemoryStream(5);

            using (CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder> test = new CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder>())
            {
                test.Coder = new Deflate_Encoder();

                CoderPropID[] propIDs =
                {
                    CoderPropID.DictionarySize,
                    CoderPropID.PosStateBits,
                    CoderPropID.LitContextBits,
                    CoderPropID.LitPosBits,
                    CoderPropID.Algorithm,
                    CoderPropID.NumFastBytes,
                    CoderPropID.MatchFinder,
                    CoderPropID.EndMarker,
                };
                Int32 dictionary = 1 << 23;

                Int32 posStateBits   = 2;
                Int32 litContextBits = 0; // for normal files
                                          // UInt32 litContextBits = 0; // for 32-bit data
                Int32 litPosBits = 2;
                // UInt32 litPosBits = 2; // for 32-bit data
                Int32  algorithm    = 1;
                Int32  numFastBytes = 128;
                string mf           = "bt4";//match finder
                bool   eos          = true;

                object[] properties =
                {
                    (Int32)(dictionary),
                    (Int32)(posStateBits),
                    (Int32)(litContextBits),
                    (Int32)(litPosBits),
                    (Int32)(algorithm),
                    (Int32)(numFastBytes),
                    mf,
                    eos,
                };
                //test.Coder.SetCoderProperties(propIDs, properties);
                File.Delete("../../test_3.LZMA");
                test.OpenNewFile("../../test_3.LZMA");

                Console.WriteLine("frame de taille : " + test_frame.Length);
                Stopwatch sw = new Stopwatch();
                for (int i = 0; i < n_frame; i++)
                {
                    Console.WriteLine("frame " + i.ToString());
                    test_frame.Seek(0, SeekOrigin.Begin);
                    sw.Start();
                    test.AddFrame(test_frame);
                    sw.Stop();
                    Console.WriteLine("frame " + i.ToString() + " fait en " + sw.Elapsed);
                    sw.Reset();
                }
                System.Console.WriteLine("fini");
                test.FinishTree();

                //test.Coder.WriteCoderProperties(temp);
            }
            CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder> test2 = new CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder>();

            test2.readOnlyOpen("../../test_3.LZMA");
            test2.Decoder = new Deflate_Decoder();
            //test2.Decoder.SetDecoderProperties(temp.ToArray());
            test_retrieve(0, test_frame, test2);
            test_retrieve(1, test_frame, test2);
            test_retrieve(53, test_frame, test2);
            test_retrieve(260, test_frame, test2);
            test_retrieve(136, test_frame, test2);
            test_retrieve(n_frame - 1, test_frame, test2);
            rand_test(100, n_frame, test_frame, test2);
            while (!Console.KeyAvailable)
            {
                ;
            }
        }
Пример #2
0
        static void generate_delta_file(string file_name, int n_frame, int frame_size)
        {
            ProbaFrame_Delta gen        = new ProbaFrame_Delta(frame_size, 0.1, 0.1, 0.00001);
            Stream           test_frame = gen.generate();

            using (CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder> test = new CoreDumpDeltaWriter <Deflate_Encoder, Deflate_Decoder>())
            {
                test.Coder = new Deflate_Encoder();

                CoderPropID[] propIDs =
                {
                    CoderPropID.DictionarySize,
                    CoderPropID.PosStateBits,
                    CoderPropID.LitContextBits,
                    CoderPropID.LitPosBits,
                    CoderPropID.Algorithm,
                    CoderPropID.NumFastBytes,
                    CoderPropID.MatchFinder,
                    CoderPropID.EndMarker,
                };
                Int32 dictionary = 1 << 23;

                Int32 posStateBits   = 2;
                Int32 litContextBits = 0; // for normal files
                                          // UInt32 litContextBits = 0; // for 32-bit data
                Int32 litPosBits = 2;
                // UInt32 litPosBits = 2; // for 32-bit data
                Int32  algorithm    = 1;
                Int32  numFastBytes = 128;
                string mf           = "bt4";//match finder
                bool   eos          = true;

                object[] properties =
                {
                    (Int32)(dictionary),
                    (Int32)(posStateBits),
                    (Int32)(litContextBits),
                    (Int32)(litPosBits),
                    (Int32)(algorithm),
                    (Int32)(numFastBytes),
                    mf,
                    eos,
                };
                //test.Coder.SetCoderProperties(propIDs, properties);
                File.Delete(file_name);
                test.OpenNewFile(file_name);

                Console.WriteLine("frame de taille : " + test_frame.Length);
                Stopwatch sw = new Stopwatch();
                for (int i = 0; i < n_frame; i++)
                {
                    Console.WriteLine("frame " + i.ToString());
                    //test_frame.Seek(0, SeekOrigin.Begin);
                    gen.delta_gene();
                    sw.Start();
                    test.AddFrame(gen.Frame);
                    sw.Stop();
                    Console.WriteLine("frame " + i.ToString() + " fait en " + sw.Elapsed);
                    sw.Reset();
                }
                System.Console.WriteLine("fini");
                test.FinishTree();

                //test.Coder.WriteCoderProperties(temp);
            }
        }