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91 lines
3.5 KiB
C#
91 lines
3.5 KiB
C#
/*
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Copyright (C) <2007-2016> <Kay Diefenthal>
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SatIp.RtspSample is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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SatIp.RtspSample is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SatIp.RtspSample. If not, see <http://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Text;
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namespace MediaBrowser.Server.Implementations.LiveTv.TunerHosts.SatIp
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{
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public class Utils
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{
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public static int Convert2BytesToInt(byte[] buffer, int offset)
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{
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int temp = (int)buffer[offset];
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temp = (temp * 256) + buffer[offset + 1];
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return (temp);
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}
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public static int Convert3BytesToInt(byte[] buffer, int offset)
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{
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int temp = (int)buffer[offset];
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temp = (temp * 256) + buffer[offset + 1];
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temp = (temp * 256) + buffer[offset + 2];
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return (temp);
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}
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public static int Convert4BytesToInt(byte[] buffer, int offset)
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{
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int temp =(int)buffer[offset];
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temp = (temp * 256) + buffer[offset + 1];
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temp = (temp * 256) + buffer[offset + 2];
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temp = (temp * 256) + buffer[offset + 3];
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return (temp);
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}
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public static long Convert4BytesToLong(byte[] buffer, int offset)
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{
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long temp = 0;
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for (int index = 0; index < 4; index++)
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temp = (temp * 256) + buffer[offset + index];
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return (temp);
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}
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public static long Convert8BytesToLong(byte[] buffer, int offset)
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{
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long temp = 0;
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for (int index = 0; index < 8; index++)
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temp = (temp * 256) + buffer[offset + index];
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return (temp);
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}
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public static string ConvertBytesToString(byte[] buffer, int offset, int length)
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{
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StringBuilder reply = new StringBuilder(4);
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for (int index = 0; index < length; index++)
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reply.Append((char)buffer[offset + index]);
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return (reply.ToString());
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}
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public static DateTime NptTimestampToDateTime(long nptTimestamp) { return NptTimestampToDateTime((uint)((nptTimestamp >> 32) & 0xFFFFFFFF), (uint)(nptTimestamp & 0xFFFFFFFF),null); }
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public static DateTime NptTimestampToDateTime(uint seconds, uint fractions, DateTime? epoch )
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{
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ulong ticks =(ulong)((seconds * TimeSpan.TicksPerSecond) + ((fractions * TimeSpan.TicksPerSecond) / 0x100000000L));
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if (epoch.HasValue) return epoch.Value + TimeSpan.FromTicks((Int64)ticks);
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return (seconds & 0x80000000L) == 0 ? UtcEpoch2036 + TimeSpan.FromTicks((Int64)ticks) : UtcEpoch1900 + TimeSpan.FromTicks((Int64)ticks);
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}
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//When the First Epoch will wrap (The real Y2k)
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public static DateTime UtcEpoch2036 = new DateTime(2036, 2, 7, 6, 28, 16, DateTimeKind.Utc);
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public static DateTime UtcEpoch1900 = new DateTime(1900, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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public static DateTime UtcEpoch1970 = new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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}
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}
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