mirror of
https://github.com/PredatH0r/ChanSort.git
synced 2026-01-13 10:52:05 +01:00
241 lines
7.9 KiB
C#
241 lines
7.9 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data.SQLite;
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using System.Text;
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using ChanSort.Api;
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namespace ChanSort.Loader.Panasonic
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{
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internal class DbChannel : ChannelInfo
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{
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internal int Bits;
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internal byte[] RawName;
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#region ctor()
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internal DbChannel(SQLiteDataReader r, IDictionary<string, int> field, DataRoot dataRoot, Encoding encoding)
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{
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this.RecordIndex = r.GetInt32(field["rowid"]);
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this.RecordOrder = r.GetInt32(field["major_channel"]);
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this.OldProgramNr = r.GetInt32(field["major_channel"]);
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int ntype = r.GetInt32(field["ntype"]);
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if (ntype == 1)
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{
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this.SignalSource |= SignalSource.DvbS;
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if (r.GetInt32(field["ya_svcid"]) >= 0)
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this.SignalSource |= SignalSource.Freesat;
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}
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else if (ntype == 2)
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this.SignalSource |= SignalSource.DvbT;
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else if (ntype == 3)
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this.SignalSource |= SignalSource.DvbC;
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else if (ntype == 10)
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this.SignalSource |= SignalSource.AnalogT | SignalSource.Tv;
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else if (ntype == 14)
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this.SignalSource |= SignalSource.AnalogC | SignalSource.Tv;
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else if (ntype == 15)
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this.SignalSource |= SignalSource.SatIP;
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byte[] buffer = new byte[1000];
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var len = r.GetBytes(field["delivery"], 0, buffer, 0, 1000);
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this.AddDebug(buffer, 0, (int) len);
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this.Skip = r.GetInt32(field["skip"]) != 0;
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this.Encrypted = r.GetInt32(field["free_CA_mode"]) != 0;
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this.Lock = r.GetInt32(field["child_lock"]) != 0;
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this.ParseFavorites(r, field);
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this.ReadNamesWithEncodingDetection(r, field, encoding);
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if (ntype == 10 || ntype == 14)
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this.ReadAnalogData(r, field);
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else
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this.ReadDvbData(r, field, dataRoot, buffer);
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}
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#endregion
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#region ParseFavorites
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private void ParseFavorites(SQLiteDataReader r, IDictionary<string, int> field)
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{
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for (int i = 0; i < 4; i++)
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{
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int favIndex = r.GetInt32(field["profile" + (i + 1) + "index"]);
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if (favIndex > 0)
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{
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this.Favorites |= (Favorites) (1 << i);
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this.FavIndex[i] = favIndex;
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}
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}
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}
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#endregion
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#region ReadAnalogData()
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private void ReadAnalogData(SQLiteDataReader r, IDictionary<string, int> field)
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{
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this.FreqInMhz = r.IsDBNull(field["freq"]) ? 0 : (decimal)r.GetInt32(field["freq"]) / 1000;
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this.ChannelOrTransponder = Tools.GetAnalogChannelNumber((int)this.FreqInMhz);
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}
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#endregion
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#region ReadDvbData()
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protected void ReadDvbData(SQLiteDataReader r, IDictionary<string, int> field, DataRoot dataRoot, byte[] delivery)
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{
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int stype = r.GetInt32(field["stype"]);
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this.SignalSource |= LookupData.Instance.IsRadioOrTv(stype);
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this.ServiceType = stype;
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int freq = r.GetInt32(field["freq"]);
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if ((this.SignalSource & SignalSource.Sat) != 0)
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{
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// ReSharper disable PossibleLossOfFraction
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this.FreqInMhz = freq/10;
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// ReSharper restore PossibleLossOfFraction
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int satId = r.GetInt32(field["physical_ch"]) >> 12;
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var sat = dataRoot.Satellites.TryGet(satId);
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if (sat != null)
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{
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this.Satellite = sat.Name;
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this.SatPosition = sat.OrbitalPosition;
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}
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if (delivery.Length >= 7)
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{
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this.SymbolRate = (delivery[5] >> 4)*10000 + (delivery[5] & 0x0F)*1000 +
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(delivery[6] >> 4)*100 + (delivery[6] & 0x0F)*10;
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}
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}
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else
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{
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freq /= 1000;
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this.FreqInMhz = freq;
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this.ChannelOrTransponder = (this.SignalSource & SignalSource.Antenna) != 0 ?
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LookupData.Instance.GetDvbtTransponder(freq).ToString() :
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LookupData.Instance.GetDvbcTransponder(freq).ToString();
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this.Satellite = (this.SignalSource & SignalSource.Antenna) != 0 ? "DVB-T" : "DVB-C";
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}
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this.OriginalNetworkId = r.GetInt32(field["onid"]);
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this.TransportStreamId = r.GetInt32(field["tsid"]);
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this.ServiceId = r.GetInt32(field["sid"]);
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}
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#endregion
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#region ReadNamesWithEncodingDetection()
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/// <summary>
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/// Character encoding is a mess here. Code pages mixed with UTF-8 and raw data
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/// </summary>
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private void ReadNamesWithEncodingDetection(SQLiteDataReader r, IDictionary<string, int> field, Encoding encoding)
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{
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byte[] buffer = new byte[100];
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int len = (int)r.GetBytes(field["sname"], 0, buffer, 0, buffer.Length);
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int end = Array.IndexOf<byte>(buffer, 0, 0, len);
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if (end >= 0)
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len = end;
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this.RawName = new byte[len];
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Array.Copy(buffer, 0, this.RawName, 0, len);
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this.ChangeEncoding(encoding);
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}
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#endregion
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#region ChangeEncoding()
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public override void ChangeEncoding(Encoding encoding)
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{
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// the encoding of channel names is a complete mess:
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// it can be UTF-8
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// it can be as specified by the DVB-encoding with a valid code page selector byte
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// it can have a DVB-encoded code page selector, but ignores the CP and use UTF-8 regardless
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// it can be code page encoded without any clue to what the code page is
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// it can have DVB-control characters inside an UTF-8 stream
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if (RawName.Length == 0)
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return;
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int startOffset;
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int bytesPerChar;
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if (!GetRecommendedEncoding(ref encoding, out startOffset, out bytesPerChar))
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return;
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// single byte code pages might have UTF-8 code mixed in, so we have to parse it manually
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StringBuilder sb = new StringBuilder();
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for (int i = startOffset; i < this.RawName.Length; i+=bytesPerChar)
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{
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byte c = this.RawName[i];
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byte c2 = i + 1 < this.RawName.Length ? this.RawName[i + 1] : (byte)0;
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if (c < 0xA0)
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sb.Append((char)c);
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else if (bytesPerChar == 1 && c >= 0xC0 && c <= 0xDF && c2 >= 0x80 && c2 <= 0xBF) // 2 byte UTF-8
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{
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sb.Append((char)(((c & 0x1F) << 6) | (c2 & 0x3F)));
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++i;
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}
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else
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sb.Append(encoding.GetString(this.RawName, i, bytesPerChar));
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}
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string longName, shortName;
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this.GetChannelNames(sb.ToString(), out longName, out shortName);
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this.Name = longName;
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this.ShortName = shortName;
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}
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#endregion
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#region GetRecommendedEncoding()
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private bool GetRecommendedEncoding(ref Encoding encoding, out int startOffset, out int bytesPerChar)
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{
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startOffset = 0;
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bytesPerChar = 1;
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if (RawName[0] < 0x10) // single byte character sets
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{
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encoding = DvbStringDecoder.GetEncoding(RawName[0]);
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startOffset = 1;
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}
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else if (RawName[0] == 0x10) // prefix for 16 bit code page ID with single byte character sets
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{
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if (RawName.Length < 3) return false;
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encoding = DvbStringDecoder.GetEncoding(0x100000 + RawName[1]*256 + RawName[2]);
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startOffset = 3;
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}
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else if (RawName[0] == 0x15) // UTF-8
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{
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encoding = Encoding.UTF8;
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startOffset = 1;
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}
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else if (RawName[0] < 0x20) // various 2-byte character sets
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{
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encoding = DvbStringDecoder.GetEncoding(RawName[0]);
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startOffset = 1;
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bytesPerChar = 2;
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}
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return true;
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}
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#endregion
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#region GetChannelNames()
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private void GetChannelNames(string name, out string longName, out string shortName)
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{
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StringBuilder sbLong = new StringBuilder();
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StringBuilder sbShort = new StringBuilder();
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bool inShort = false;
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foreach (char c in name)
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{
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if (c < 0x20)
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continue;
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if (c == 0x86 || c == '\uE086')
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inShort = true;
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else if (c == 0x87 || c == '\uE087')
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inShort = false;
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if (c >= 0x80 && c <= 0x9F || c>='\uE080' && c<='\uE09F')
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continue;
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if (inShort)
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sbShort.Append(c);
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sbLong.Append(c);
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}
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longName = sbLong.ToString();
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shortName = sbShort.ToString();
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}
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#endregion
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}
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}
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