diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs index f09338330..188eca158 100644 --- a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs +++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunManager.cs @@ -2,6 +2,7 @@ using System; using System.Buffers; +using System.Buffers.Binary; using System.Collections.Generic; using System.Globalization; using System.Net; @@ -10,6 +11,7 @@ using System.Text; using System.Text.RegularExpressions; using System.Threading; using System.Threading.Tasks; +using MediaBrowser.Common; using MediaBrowser.Controller.LiveTv; namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun @@ -120,13 +122,13 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun private static async Task CheckTunerAvailability(NetworkStream stream, int tuner, CancellationToken cancellationToken) { - var lockkeyMsg = CreateGetMessage(tuner, "lockkey"); - await stream.WriteAsync(lockkeyMsg, 0, lockkeyMsg.Length, cancellationToken).ConfigureAwait(false); - byte[] buffer = ArrayPool.Shared.Rent(8192); try { - int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + var msgLen = WriteGetMessage(buffer, tuner, "lockkey"); + await stream.WriteAsync(buffer.AsMemory(0, msgLen), cancellationToken).ConfigureAwait(false); + + int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); ParseReturnMessage(buffer, receivedBytes, out string returnVal); @@ -166,9 +168,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun _activeTuner = i; var lockKeyString = string.Format(CultureInfo.InvariantCulture, "{0:d}", lockKeyValue); - var lockkeyMsg = CreateSetMessage(i, "lockkey", lockKeyString, null); - await stream.WriteAsync(lockkeyMsg, 0, lockkeyMsg.Length, cancellationToken).ConfigureAwait(false); - int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + var lockkeyMsgLen = WriteSetMessage(buffer, i, "lockkey", lockKeyString, null); + await stream.WriteAsync(buffer.AsMemory(0, lockkeyMsgLen), cancellationToken).ConfigureAwait(false); + int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); // parse response to make sure it worked if (!ParseReturnMessage(buffer, receivedBytes, out _)) @@ -178,9 +180,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun foreach (var command in commands.GetCommands()) { - var channelMsg = CreateSetMessage(i, command.Item1, command.Item2, lockKeyValue); - await stream.WriteAsync(channelMsg, 0, channelMsg.Length, cancellationToken).ConfigureAwait(false); - receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + var channelMsgLen = WriteSetMessage(buffer, i, command.Item1, command.Item2, lockKeyValue); + await stream.WriteAsync(buffer.AsMemory(0, channelMsgLen), cancellationToken).ConfigureAwait(false); + receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); // parse response to make sure it worked if (!ParseReturnMessage(buffer, receivedBytes, out _)) @@ -191,10 +193,10 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun } var targetValue = string.Format(CultureInfo.InvariantCulture, "rtp://{0}:{1}", localIp, localPort); - var targetMsg = CreateSetMessage(i, "target", targetValue, lockKeyValue); + var targetMsgLen = WriteSetMessage(buffer, i, "target", targetValue, lockKeyValue); - await stream.WriteAsync(targetMsg, 0, targetMsg.Length, cancellationToken).ConfigureAwait(false); - receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + await stream.WriteAsync(buffer.AsMemory(0, targetMsgLen), cancellationToken).ConfigureAwait(false); + receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); // parse response to make sure it worked if (!ParseReturnMessage(buffer, receivedBytes, out _)) @@ -232,9 +234,9 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun { foreach (var command in commandList) { - var channelMsg = CreateSetMessage(_activeTuner, command.Item1, command.Item2, _lockkey); - await stream.WriteAsync(channelMsg, 0, channelMsg.Length, cancellationToken).ConfigureAwait(false); - int receivedBytes = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false); + var channelMsgLen = WriteSetMessage(buffer, _activeTuner, command.Item1, command.Item2, _lockkey); + await stream.WriteAsync(buffer.AsMemory(0, channelMsgLen), cancellationToken).ConfigureAwait(false); + int receivedBytes = await stream.ReadAsync(buffer, cancellationToken).ConfigureAwait(false); // parse response to make sure it worked if (!ParseReturnMessage(buffer, receivedBytes, out _)) @@ -265,17 +267,17 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun { var stream = client.GetStream(); - var releaseTarget = CreateSetMessage(_activeTuner, "target", "none", lockKeyValue); - await stream.WriteAsync(releaseTarget, 0, releaseTarget.Length).ConfigureAwait(false); - var buffer = ArrayPool.Shared.Rent(8192); try { - await stream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false); - var releaseKeyMsg = CreateSetMessage(_activeTuner, "lockkey", "none", lockKeyValue); + var releaseTargetLen = WriteSetMessage(buffer, _activeTuner, "target", "none", lockKeyValue); + await stream.WriteAsync(buffer.AsMemory(0, releaseTargetLen)).ConfigureAwait(false); + + await stream.ReadAsync(buffer).ConfigureAwait(false); + var releaseKeyMsgLen = WriteSetMessage(buffer, _activeTuner, "lockkey", "none", lockKeyValue); _lockkey = null; - await stream.WriteAsync(releaseKeyMsg, 0, releaseKeyMsg.Length).ConfigureAwait(false); - await stream.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false); + await stream.WriteAsync(buffer.AsMemory(0, releaseKeyMsgLen)).ConfigureAwait(false); + await stream.ReadAsync(buffer).ConfigureAwait(false); } finally { @@ -283,105 +285,65 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun } } - private static byte[] CreateGetMessage(int tuner, string name) + internal static int WriteGetMessage(Span buffer, int tuner, string name) { - var byteName = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}\0", tuner, name)); - int messageLength = byteName.Length + 10; // 4 bytes for header + 4 bytes for crc + 2 bytes for tag name and length - - var message = new byte[messageLength]; - - int offset = InsertHeaderAndName(byteName, messageLength, message); - - bool flipEndian = BitConverter.IsLittleEndian; + var byteName = string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}", tuner, name); + int offset = WriteHeaderAndName(buffer, byteName); // calculate crc and insert at the end of the message - var crcBytes = BitConverter.GetBytes(HdHomerunCrc.GetCrc32(message, messageLength - 4)); - if (flipEndian) - { - Array.Reverse(crcBytes); - } + var crc = Crc32.Compute(buffer.Slice(0, offset)); + BinaryPrimitives.WriteUInt32LittleEndian(buffer.Slice(offset), crc); - Buffer.BlockCopy(crcBytes, 0, message, offset, 4); - - return message; + return offset + 4; } - private static byte[] CreateSetMessage(int tuner, string name, string value, uint? lockkey) + private static int WriteSetMessage(Span buffer, int tuner, string name, string value, uint? lockkey) { - var byteName = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}\0", tuner, name)); - var byteValue = Encoding.UTF8.GetBytes(string.Format(CultureInfo.InvariantCulture, "{0}\0", value)); + var byteName = string.Format(CultureInfo.InvariantCulture, "/tuner{0}/{1}", tuner, name); + int offset = WriteHeaderAndName(buffer, byteName); + + buffer[offset++] = GetSetValue; + offset += WriteNullTerminatedString(buffer.Slice(offset), value); - int messageLength = byteName.Length + byteValue.Length + 12; if (lockkey.HasValue) { - messageLength += 6; - } - - var message = new byte[messageLength]; - - int offset = InsertHeaderAndName(byteName, messageLength, message); - - bool flipEndian = BitConverter.IsLittleEndian; - - message[offset++] = GetSetValue; - message[offset++] = Convert.ToByte(byteValue.Length); - Buffer.BlockCopy(byteValue, 0, message, offset, byteValue.Length); - offset += byteValue.Length; - if (lockkey.HasValue) - { - message[offset++] = GetSetLockkey; - message[offset++] = 4; - var lockKeyBytes = BitConverter.GetBytes(lockkey.Value); - if (flipEndian) - { - Array.Reverse(lockKeyBytes); - } - - Buffer.BlockCopy(lockKeyBytes, 0, message, offset, 4); + buffer[offset++] = GetSetLockkey; + buffer[offset++] = 4; + BinaryPrimitives.WriteUInt32BigEndian(buffer.Slice(offset), lockkey.Value); offset += 4; } // calculate crc and insert at the end of the message - var crcBytes = BitConverter.GetBytes(HdHomerunCrc.GetCrc32(message, messageLength - 4)); - if (flipEndian) - { - Array.Reverse(crcBytes); - } + var crc = Crc32.Compute(buffer.Slice(0, offset)); + BinaryPrimitives.WriteUInt32LittleEndian(buffer.Slice(offset), crc); - Buffer.BlockCopy(crcBytes, 0, message, offset, 4); - - return message; + return offset + 4; } - private static int InsertHeaderAndName(byte[] byteName, int messageLength, byte[] message) + internal static int WriteNullTerminatedString(Span buffer, ReadOnlySpan value) { - // check to see if we need to flip endiannes - bool flipEndian = BitConverter.IsLittleEndian; - int offset = 0; + int len = Encoding.UTF8.GetBytes(value, buffer.Slice(1)) + 1; - // create header bytes - var getSetBytes = BitConverter.GetBytes(GetSetRequest); - var msgLenBytes = BitConverter.GetBytes((ushort)(messageLength - 8)); // Subtrace 4 bytes for header and 4 bytes for crc + // Write length in front of value + buffer[0] = Convert.ToByte(len); - if (flipEndian) - { - Array.Reverse(getSetBytes); - Array.Reverse(msgLenBytes); - } + // null-terminate + buffer[len++] = 0; + return len; + } + + private static int WriteHeaderAndName(Span buffer, ReadOnlySpan payload) + { // insert header bytes into message - Buffer.BlockCopy(getSetBytes, 0, message, offset, 2); - offset += 2; - Buffer.BlockCopy(msgLenBytes, 0, message, offset, 2); - offset += 2; + BinaryPrimitives.WriteUInt16BigEndian(buffer, GetSetRequest); + int offset = 2; + // Subtract 4 bytes for header and 4 bytes for crc + BinaryPrimitives.WriteUInt16BigEndian(buffer.Slice(offset), (ushort)(payload.Length + 2)); // insert tag name and length - message[offset++] = GetSetName; - message[offset++] = Convert.ToByte(byteName.Length); - - // insert name string - Buffer.BlockCopy(byteName, 0, message, offset, byteName.Length); - offset += byteName.Length; + buffer[offset++] = GetSetName; + offset += WriteNullTerminatedString(buffer.Slice(offset), payload); return offset; } @@ -442,90 +404,5 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun returnVal = Encoding.UTF8.GetString(buf, offset, valueLength - 1); // remove null terminator return true; } - - private static class HdHomerunCrc - { - private static uint[] crc_table = { - 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 GetCrc32(byte[] bytes, int numBytes) - { - var hash = 0xffffffff; - for (var i = 0; i < numBytes; i++) - { - hash = (hash >> 8) ^ crc_table[(hash ^ bytes[i]) & 0xff]; - } - - var tmp = ~hash & 0xffffffff; - 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; - } - } } } diff --git a/MediaBrowser.Common/Crc32.cs b/MediaBrowser.Common/Crc32.cs new file mode 100644 index 000000000..599eb4c99 --- /dev/null +++ b/MediaBrowser.Common/Crc32.cs @@ -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 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; + } + } +} diff --git a/tests/Jellyfin.Common.Tests/Crc32Tests.cs b/tests/Jellyfin.Common.Tests/Crc32Tests.cs new file mode 100644 index 000000000..d93fb839c --- /dev/null +++ b/tests/Jellyfin.Common.Tests/Crc32Tests.cs @@ -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(0, Crc32.Compute(Array.Empty())); + } + + [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))); + } + } +} diff --git a/tests/Jellyfin.Server.Implementations.Tests/LiveTv/HdHomerunManagerTests.cs b/tests/Jellyfin.Server.Implementations.Tests/LiveTv/HdHomerunManagerTests.cs new file mode 100644 index 000000000..15cc12d64 --- /dev/null +++ b/tests/Jellyfin.Server.Implementations.Tests/LiveTv/HdHomerunManagerTests.cs @@ -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 expected = stackalloc byte[] + { + 1, 0 + }; + + Span 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 expected = stackalloc byte[] + { + 10, (byte)'T', (byte)'h', (byte)'e', (byte)' ', (byte)'q', (byte)'u', (byte)'i', (byte)'c', (byte)'k', 0 + }; + + Span buffer = stackalloc byte[128]; + int len = HdHomerunManager.WriteNullTerminatedString(buffer, "The quick"); + + Assert.Equal(expected.Length, len); + Assert.True(expected.SequenceEqual(buffer.Slice(0, len))); + } + } +}