private AisMessage CreateAisMessageFromSentence(AisSentence sentence)
{
var asciiDecimal = sentence.Payload.Select(AisEncoding.GetAsciiDecimalFromByte).ToArray();
var payLoad = Utils.ConvertToMsb6Bit(asciiDecimal);
if (sentence.FillBits != 0)
{
PadPayLoad(payLoad, sentence.FillBits);
}
return(CreateAisMessageFromBitPayload(payLoad));
}
public Record AddSentence(AisSentence sentence)
{
Record record;
if (m_buffer.TryGetValue(sentence.SentenceId, out record))
{
return(record.AddSentence(sentence));
}
CheckBufferLimit();
record = new Record().AddSentence(sentence);
m_buffer.Add(sentence.SentenceId, record);
return(record);
}
public static string ToNmeaString(this AisSentence sentence)
{
return(new StringBuilder()
.Append(c_leadChar)
.Append(sentence.TalkedId)
.Append(c_separator)
.Append(sentence.FragmentCount.ToString("X"))
.Append(c_separator)
.Append(sentence.FragmentNumber.ToString("X"))
.Append(c_separator)
.Append(sentence.SentenceId == 0 ? string.Empty : sentence.SentenceId.ToString("X"))
.Append(c_separator)
.Append(sentence.Channel)
.Append(c_separator)
.Append(Encoding.ASCII.GetString(sentence.Payload))
.Append(c_separator)
.Append(sentence.FillBits)
.Append(c_fillBitSeparator)
.Append(sentence.CheckSum.ToString("X")).ToString());
}
/// <summary>
/// Creates ais message from sentence.
/// </summary>
/// <param name="sentence">Ais sentence produced by Sentence factory.</param>
/// <param name="isFragmented">True if message is fragment, false if message is complete.</param>
/// <returns>Instance of supported ais message class, null if passed sentence is fragment, isFragmented is true in this case.</returns>
public AisMessage CreateAisMessage(AisSentence sentence, out bool isFragmented)
{
if (sentence.FragmentCount <= 1)
{
isFragmented = false;
return(CreateAisMessageFromSentence(sentence));
}
var record = m_buffer.AddSentence(sentence);
if (record.IsComplete())
{
isFragmented = false;
return(CreateAisMessageFromFragments(record.Sentences));
}
isFragmented = true;
return(null);
}
public Record AddSentence(AisSentence sentence)
{
m_count = sentence.FragmentCount;
m_sentences.Add(sentence);
return(this);
}
