Rewrite packet writing code for HdHomerun
This commit is contained in:
Bond_009
parent
76d66e0dee
commit
3a9fcb6abd
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@ -2,6 +2,7 @@
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using System;
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using System.Buffers;
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using System.Buffers.Binary;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Net;
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@ -10,6 +11,7 @@ using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common;
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using MediaBrowser.Controller.LiveTv;
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namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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@ -120,13 +122,13 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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private static async Task<bool> CheckTunerAvailability(NetworkStream stream, int tuner, CancellationToken cancellationToken)
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{
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var lockkeyMsg = CreateGetMessage(tuner, "lockkey");
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await stream.WriteAsync(lockkeyMsg, 0, lockkeyMsg.Length, cancellationToken).ConfigureAwait(false);
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byte[] buffer = ArrayPool<byte>.Shared.Rent(8192);
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try
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{
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int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
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var msgLen = WriteGetMessage(buffer, tuner, "lockkey");
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await stream.WriteAsync(buffer.AsMemory(0, msgLen), cancellationToken).ConfigureAwait(false);
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int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
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ParseReturnMessage(buffer, receivedBytes, out string returnVal);
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@ -166,9 +168,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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_activeTuner = i;
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var lockKeyString = string.Format(CultureInfo.InvariantCulture, "{0:d}", lockKeyValue);
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var lockkeyMsg = CreateSetMessage(i, "lockkey", lockKeyString, null);
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await stream.WriteAsync(lockkeyMsg, 0, lockkeyMsg.Length, cancellationToken).ConfigureAwait(false);
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int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
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var lockkeyMsgLen = WriteSetMessage(buffer, i, "lockkey", lockKeyString, null);
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await stream.WriteAsync(buffer.AsMemory(0, lockkeyMsgLen), cancellationToken).ConfigureAwait(false);
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int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
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// parse response to make sure it worked
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if (!ParseReturnMessage(buffer, receivedBytes, out _))
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@ -178,9 +180,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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foreach (var command in commands.GetCommands())
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{
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var channelMsg = CreateSetMessage(i, command.Item1, command.Item2, lockKeyValue);
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await stream.WriteAsync(channelMsg, 0, channelMsg.Length, cancellationToken).ConfigureAwait(false);
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receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
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var channelMsgLen = WriteSetMessage(buffer, i, command.Item1, command.Item2, lockKeyValue);
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await stream.WriteAsync(buffer.AsMemory(0, channelMsgLen), cancellationToken).ConfigureAwait(false);
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receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
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// parse response to make sure it worked
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if (!ParseReturnMessage(buffer, receivedBytes, out _))
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@ -191,10 +193,10 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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}
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var targetValue = string.Format(CultureInfo.InvariantCulture, "rtp://{0}:{1}", localIp, localPort);
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var targetMsg = CreateSetMessage(i, "target", targetValue, lockKeyValue);
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var targetMsgLen = WriteSetMessage(buffer, i, "target", targetValue, lockKeyValue);
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await stream.WriteAsync(targetMsg, 0, targetMsg.Length, cancellationToken).ConfigureAwait(false);
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receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
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await stream.WriteAsync(buffer.AsMemory(0, targetMsgLen), cancellationToken).ConfigureAwait(false);
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receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
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// parse response to make sure it worked
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if (!ParseReturnMessage(buffer, receivedBytes, out _))
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@ -232,9 +234,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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{
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foreach (var command in commandList)
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{
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var channelMsg = CreateSetMessage(_activeTuner, command.Item1, command.Item2, _lockkey);
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await stream.WriteAsync(channelMsg, 0, channelMsg.Length, cancellationToken).ConfigureAwait(false);
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int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
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var channelMsgLen = WriteSetMessage(buffer, _activeTuner, command.Item1, command.Item2, _lockkey);
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await stream.WriteAsync(buffer.AsMemory(0, channelMsgLen), cancellationToken).ConfigureAwait(false);
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int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false);
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// parse response to make sure it worked
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if (!ParseReturnMessage(buffer, receivedBytes, out _))
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@ -265,17 +267,17 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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{
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var stream = client.GetStream();
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var releaseTarget = CreateSetMessage(_activeTuner, "target", "none", lockKeyValue);
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await stream.WriteAsync(releaseTarget, 0, releaseTarget.Length).ConfigureAwait(false);
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var buffer = ArrayPool<byte>.Shared.Rent(8192);
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try
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{
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await stream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
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var releaseKeyMsg = CreateSetMessage(_activeTuner, "lockkey", "none", lockKeyValue);
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var releaseTargetLen = WriteSetMessage(buffer, _activeTuner, "target", "none", lockKeyValue);
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await stream.WriteAsync(buffer.AsMemory(0, releaseTargetLen)).ConfigureAwait(false);
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await stream.ReadAsync(buffer).ConfigureAwait(false);
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var releaseKeyMsgLen = WriteSetMessage(buffer, _activeTuner, "lockkey", "none", lockKeyValue);
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_lockkey = null;
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await stream.WriteAsync(releaseKeyMsg, 0, releaseKeyMsg.Length).ConfigureAwait(false);
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await stream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
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await stream.WriteAsync(buffer.AsMemory(0, releaseKeyMsgLen)).ConfigureAwait(false);
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await stream.ReadAsync(buffer).ConfigureAwait(false);
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}
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finally
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{
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@ -283,105 +285,65 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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}
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}
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private static byte[] CreateGetMessage(int tuner, string name)
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internal static int WriteGetMessage(Span<byte> buffer, int tuner, string name)
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{
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var byteName = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}\0", tuner, name));
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int messageLength = byteName.Length + 10; // 4 bytes for header + 4 bytes for crc + 2 bytes for tag name and length
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var message = new byte[messageLength];
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int offset = InsertHeaderAndName(byteName, messageLength, message);
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bool flipEndian = BitConverter.IsLittleEndian;
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var byteName = string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}", tuner, name);
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int offset = WriteHeaderAndName(buffer, byteName);
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// calculate crc and insert at the end of the message
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var crcBytes = BitConverter.GetBytes(HdHomerunCrc.GetCrc32(message, messageLength - 4));
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if (flipEndian)
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{
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Array.Reverse(crcBytes);
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}
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var crc = Crc32.Compute(buffer.Slice(0, offset));
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BinaryPrimitives.WriteUInt32LittleEndian(buffer.Slice(offset), crc);
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Buffer.BlockCopy(crcBytes, 0, message, offset, 4);
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return message;
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return offset + 4;
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}
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private static byte[] CreateSetMessage(int tuner, string name, string value, uint? lockkey)
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private static int WriteSetMessage(Span<byte> buffer, int tuner, string name, string value, uint? lockkey)
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{
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var byteName = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}\0", tuner, name));
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var byteValue = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "{0}\0", value));
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var byteName = string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}", tuner, name);
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int offset = WriteHeaderAndName(buffer, byteName);
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buffer[offset++] = GetSetValue;
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offset += WriteNullTerminatedString(buffer.Slice(offset), value);
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int messageLength = byteName.Length + byteValue.Length + 12;
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if (lockkey.HasValue)
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{
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messageLength += 6;
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}
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var message = new byte[messageLength];
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int offset = InsertHeaderAndName(byteName, messageLength, message);
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bool flipEndian = BitConverter.IsLittleEndian;
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message[offset++] = GetSetValue;
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message[offset++] = Convert.ToByte(byteValue.Length);
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Buffer.BlockCopy(byteValue, 0, message, offset, byteValue.Length);
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offset += byteValue.Length;
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if (lockkey.HasValue)
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{
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message[offset++] = GetSetLockkey;
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message[offset++] = 4;
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var lockKeyBytes = BitConverter.GetBytes(lockkey.Value);
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if (flipEndian)
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{
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Array.Reverse(lockKeyBytes);
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}
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Buffer.BlockCopy(lockKeyBytes, 0, message, offset, 4);
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buffer[offset++] = GetSetLockkey;
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buffer[offset++] = 4;
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BinaryPrimitives.WriteUInt32BigEndian(buffer.Slice(offset), lockkey.Value);
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offset += 4;
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}
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// calculate crc and insert at the end of the message
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var crcBytes = BitConverter.GetBytes(HdHomerunCrc.GetCrc32(message, messageLength - 4));
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if (flipEndian)
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{
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Array.Reverse(crcBytes);
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}
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var crc = Crc32.Compute(buffer.Slice(0, offset));
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BinaryPrimitives.WriteUInt32LittleEndian(buffer.Slice(offset), crc);
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Buffer.BlockCopy(crcBytes, 0, message, offset, 4);
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return message;
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return offset + 4;
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}
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private static int InsertHeaderAndName(byte[] byteName, int messageLength, byte[] message)
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internal static int WriteNullTerminatedString(Span<byte> buffer, ReadOnlySpan<char> value)
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{
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// check to see if we need to flip endiannes
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bool flipEndian = BitConverter.IsLittleEndian;
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int offset = 0;
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int len = Encoding.UTF8.GetBytes(value, buffer.Slice(1)) + 1;
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// create header bytes
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var getSetBytes = BitConverter.GetBytes(GetSetRequest);
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var msgLenBytes = BitConverter.GetBytes((ushort)(messageLength - 8)); // Subtrace 4 bytes for header and 4 bytes for crc
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// Write length in front of value
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buffer[0] = Convert.ToByte(len);
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if (flipEndian)
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{
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Array.Reverse(getSetBytes);
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Array.Reverse(msgLenBytes);
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}
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// null-terminate
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buffer[len++] = 0;
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return len;
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}
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private static int WriteHeaderAndName(Span<byte> buffer, ReadOnlySpan<char> payload)
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{
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// insert header bytes into message
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Buffer.BlockCopy(getSetBytes, 0, message, offset, 2);
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offset += 2;
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Buffer.BlockCopy(msgLenBytes, 0, message, offset, 2);
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offset += 2;
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BinaryPrimitives.WriteUInt16BigEndian(buffer, GetSetRequest);
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int offset = 2;
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// Subtract 4 bytes for header and 4 bytes for crc
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BinaryPrimitives.WriteUInt16BigEndian(buffer.Slice(offset), (ushort)(payload.Length + 2));
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// insert tag name and length
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message[offset++] = GetSetName;
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message[offset++] = Convert.ToByte(byteName.Length);
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// insert name string
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Buffer.BlockCopy(byteName, 0, message, offset, byteName.Length);
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offset += byteName.Length;
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buffer[offset++] = GetSetName;
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offset += WriteNullTerminatedString(buffer.Slice(offset), payload);
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return offset;
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}
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@ -442,90 +404,5 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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returnVal = Encoding.UTF8.GetString(buf, offset, valueLength - 1); // remove null terminator
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return true;
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}
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private static class HdHomerunCrc
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{
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private static uint[] crc_table = {
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0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
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0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
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0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
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0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
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0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
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0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
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0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
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0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
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0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
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0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
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0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
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0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
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0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
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0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
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0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
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0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
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0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
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0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
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0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
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0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
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0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
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0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
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0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
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0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
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0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
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0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
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0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
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0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
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0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
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0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
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0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
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0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
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0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
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0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
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0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
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0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
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0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
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0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
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0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
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0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
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0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
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0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
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0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
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0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
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0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
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0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
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0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
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0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
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0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
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0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
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0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
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0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
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0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
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0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
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0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
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0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
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0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
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0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
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0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
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0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
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0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
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0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
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0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
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0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d };
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public static uint GetCrc32(byte[] bytes, int numBytes)
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{
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var hash = 0xffffffff;
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for (var i = 0; i < numBytes; i++)
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{
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hash = (hash >> 8) ^ crc_table[(hash ^ bytes[i]) & 0xff];
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}
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var tmp = ~hash & 0xffffffff;
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var b0 = tmp & 0xff;
|
||||
var b1 = (tmp >> 8) & 0xff;
|
||||
var b2 = (tmp >> 16) & 0xff;
|
||||
var b3 = (tmp >> 24) & 0xff;
|
||||
return (b0 << 24) | (b1 << 16) | (b2 << 8) | b3;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
89
MediaBrowser.Common/Crc32.cs
Normal file
89
MediaBrowser.Common/Crc32.cs
Normal file
|
|
@ -0,0 +1,89 @@
|
|||
#pragma warning disable CS1591
|
||||
|
||||
using System;
|
||||
|
||||
namespace MediaBrowser.Common
|
||||
{
|
||||
public static class Crc32
|
||||
{
|
||||
private static readonly uint[] _crcTable =
|
||||
{
|
||||
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
|
||||
0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
|
||||
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
|
||||
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
|
||||
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
|
||||
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
|
||||
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
|
||||
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
|
||||
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
|
||||
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
|
||||
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
|
||||
0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
|
||||
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
|
||||
0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
|
||||
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
|
||||
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
|
||||
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
|
||||
0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
|
||||
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
|
||||
0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
|
||||
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
|
||||
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
|
||||
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
|
||||
0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
|
||||
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
|
||||
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
|
||||
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
|
||||
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
|
||||
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
|
||||
0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
|
||||
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
|
||||
0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
|
||||
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
|
||||
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
|
||||
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
|
||||
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
|
||||
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
|
||||
0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
|
||||
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
|
||||
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
|
||||
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
|
||||
0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
|
||||
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
|
||||
0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
|
||||
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
|
||||
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
|
||||
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
|
||||
0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
|
||||
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
|
||||
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
|
||||
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
|
||||
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
|
||||
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
|
||||
0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
|
||||
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
|
||||
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
|
||||
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
|
||||
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
|
||||
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
|
||||
0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
|
||||
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
|
||||
0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
|
||||
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
|
||||
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
|
||||
};
|
||||
|
||||
public static uint Compute(ReadOnlySpan<byte> bytes)
|
||||
{
|
||||
var crc = 0xffffffff;
|
||||
var len = bytes.Length;
|
||||
for (var i = 0; i < len; i++)
|
||||
{
|
||||
crc = (crc >> 8) ^ _crcTable[(bytes[i] ^ crc) & 0xff];
|
||||
}
|
||||
|
||||
return ~crc;
|
||||
}
|
||||
}
|
||||
}
|
||||
23
tests/Jellyfin.Common.Tests/Crc32Tests.cs
Normal file
23
tests/Jellyfin.Common.Tests/Crc32Tests.cs
Normal file
|
|
@ -0,0 +1,23 @@
|
|||
using System;
|
||||
using System.Text;
|
||||
using MediaBrowser.Common;
|
||||
using Xunit;
|
||||
|
||||
namespace Jellyfin.Common.Tests
|
||||
{
|
||||
public static class Crc32Tests
|
||||
{
|
||||
[Fact]
|
||||
public static void Compute_Empty_Zero()
|
||||
{
|
||||
Assert.Equal<uint>(0, Crc32.Compute(Array.Empty<byte>()));
|
||||
}
|
||||
|
||||
[Theory]
|
||||
[InlineData(0x414fa339, "The quick brown fox jumps over the lazy dog")]
|
||||
public static void Compute_Valid_Success(uint expected, string data)
|
||||
{
|
||||
Assert.Equal(expected, Crc32.Compute(Encoding.UTF8.GetBytes(data)));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,39 @@
|
|||
using System;
|
||||
using Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun;
|
||||
using Xunit;
|
||||
|
||||
namespace Jellyfin.Server.Implementations.Tests.LiveTv
|
||||
{
|
||||
public class HdHomerunManagerTests
|
||||
{
|
||||
[Fact]
|
||||
public void WriteNullTerminatedString_Empty_Success()
|
||||
{
|
||||
ReadOnlySpan<byte> expected = stackalloc byte[]
|
||||
{
|
||||
1, 0
|
||||
};
|
||||
|
||||
Span<byte> buffer = stackalloc byte[128];
|
||||
int len = HdHomerunManager.WriteNullTerminatedString(buffer, string.Empty);
|
||||
|
||||
Assert.Equal(expected.Length, len);
|
||||
Assert.True(expected.SequenceEqual(buffer.Slice(0, len)));
|
||||
}
|
||||
|
||||
[Fact]
|
||||
public void WriteNullTerminatedString_Valid_Success()
|
||||
{
|
||||
ReadOnlySpan<byte> expected = stackalloc byte[]
|
||||
{
|
||||
10, (byte)'T', (byte)'h', (byte)'e', (byte)' ', (byte)'q', (byte)'u', (byte)'i', (byte)'c', (byte)'k', 0
|
||||
};
|
||||
|
||||
Span<byte> buffer = stackalloc byte[128];
|
||||
int len = HdHomerunManager.WriteNullTerminatedString(buffer, "The quick");
|
||||
|
||||
Assert.Equal(expected.Length, len);
|
||||
Assert.True(expected.SequenceEqual(buffer.Slice(0, len)));
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user