/// <summary>
/// ビット列を追加する
/// </summary>
/// <param name="bit">false: 0 / true: 1 / null: 不明</param>
/// <returns>解析処理を中断するか</returns>
public bool Append(bool?nbit)
{
// 終了･試験信号には92bitの無信号区間が含まれている
if (State == EwsParserState.ParseEndAndTestBlock && BlockParseStage == 4)
{
BitBuffer.Add(2);
if (BitBuffer.Count >= 90 && nbit != null)
{
State = EwsParserState.WaitPrefix;
BlockParseStage = 0;
BitBuffer.Clear();
Console.WriteLine();
}
else
{
return(false);
}
}
// 出力
if (nbit == false)
{
Console.Write($"0");
}
else if (nbit == true)
{
Console.Write($"1");
}
else
{
Console.Write($"x");
}
//TODO: 一部解析が失敗しても正常に解析できるようにする
if (!(nbit is bool bit))
{
Reset();
return(true);
}
BitBuffer.Add((byte)(bit ? 1 : 0));
switch (State)
{
case EwsParserState.WaitPrefix:
if (BitBuffer.Count < 4)
{
return(false);
}
if (BitBuffer[0] == 1)
{
for (int i = 0; i < BeginPrefixToken.Length; i++)
{
if (BeginPrefixToken[i] == BitBuffer[i])
{
continue;
}
Console.WriteLine("\n前置符号検出失敗");
Reset();
return(true);
}
Console.WriteLine("\n前置符号検出 第1種/第2種");
State = EwsParserState.ParseBeginBlock;
BlockCount = 0;
CurrentMessage = new EwsMessage {
MessageType = EwsMessageType.Type1
};
}
else
{
for (int i = 0; i < EndAndTestPrefixToken.Length; i++)
{
if (EndAndTestPrefixToken[i] == BitBuffer[i])
{
continue;
}
Console.WriteLine("\n前置符号検出失敗");
Reset();
return(true);
}
Console.WriteLine("\n前置符号検出 試験/終了");
State = EwsParserState.ParseEndAndTestBlock;
if (CurrentMessage == null)
{
CurrentMessage = new EwsMessage {
MessageType = EwsMessageType.EndAndTest
}
}
;
}
BlockParseStage = 0;
BitBuffer.Clear();
break;
case EwsParserState.ParseBeginBlock:
case EwsParserState.ParseEndAndTestBlock:
if (BitBuffer.Count == 16)
{
Console.Write(" ");
return(false);
}
if (BitBuffer.Count < 32)
{
return(false);
}
Console.WriteLine();
BlockParseStage++;
if (BitBuffer[0] == 0)
{
for (int i = 0; i < Type1StartAndEndFixedToken.Length; i++)
{
if (Type1StartAndEndFixedToken[i] == BitBuffer[i])
{
continue;
}
Console.WriteLine("\n固定符号検出失敗");
Reset();
return(true);
}
Console.Write($" {(State == EwsParserState.ParseBeginBlock ? "第1種" : "終了/試験")}: ");
}
else if (BitBuffer[0] == 1)
{
for (int i = 0; i < Type2StartFixedToken.Length; i++)
{
if (Type2StartFixedToken[i] == BitBuffer[i])
{
continue;
}
Console.WriteLine("\n固定符号検出失敗");
Reset();
return(true);
}
Console.Write(" 第2種: ");
CurrentMessage.MessageType = EwsMessageType.Type2;
}
switch (BlockParseStage)
{
case 1:
{
var region = SearchToken(AreaTokens, BitBuffer, 18, 12) ?? "不明";
Console.WriteLine($"地域: {region}");
CurrentMessage.AreaName = region;
}
break;
case 2:
{
bool isEvenBlock = BitBuffer[24] == 1;
var day = SearchToken(DayTokens, BitBuffer, 19, 5);
var month = SearchToken(MonthTokens, BitBuffer, 25, 5);
Console.WriteLine($"{(isEvenBlock ? "*" : " ")}{month}月 {day}日");
if (day == null || month == null)
{
return(true);
}
if (CurrentMessage.Time == null)
{
CurrentMessage.Time = new EwsDateTime();
}
CurrentMessage.Time.IsRealtime = !isEvenBlock;
CurrentMessage.Time.Day = day.GetValueOrDefault();
CurrentMessage.Time.Month = month.GetValueOrDefault();
}
break;
case 3:
{
bool isEvenBlock = BitBuffer[24] == 1;
var hour = SearchToken(HourTokens, BitBuffer, 19, 5);
var year = SearchToken(YearTokens, BitBuffer, 25, 5);
Console.WriteLine($"{(isEvenBlock ? "*" : " ")}20x{year}年 {hour}時");
if (hour == null || year == null)
{
return(true);
}
if (CurrentMessage.Time == null)
{
CurrentMessage.Time = new EwsDateTime();
}
CurrentMessage.Time.IsRealtime = !isEvenBlock;
CurrentMessage.Time.Hour = hour.GetValueOrDefault();
CurrentMessage.Time.Year = year.GetValueOrDefault();
BlockCount++;
Console.WriteLine($"=== ブロック{BlockCount} 終 ===\n");
CurrentMessage.BlockId = BlockCount;
MassegeReceived?.Invoke(CurrentMessage);
CurrentMessage.AreaName = null;
CurrentMessage.Time = null;
if (State == EwsParserState.ParseEndAndTestBlock)
{
//State = EwsParserState.WaitPrefix;
BlockParseStage++;
if (BlockCount == 4) // 4ブロック見たら終了させる
{
Reset();
return(true);
}
}
else
{
BlockParseStage = 0;
if (BlockCount == 10) // 10ブロック見たら終了させる
{
Reset();
return(true);
}
}
}
break;
}
BitBuffer.Clear();
break;
}
return(false);
}
public EwsSampleDemodulator(int sampleRate)
{
SampleRate = sampleRate;
Parser = new EwsParser();
Parser.MassegeReceived += m => MassegeReceived?.Invoke(m);
}
