/// <summary>
/// DeSerialization method
/// </summary>
public override void Read(byte[] data)
{
// clear existing tape blocks
_datacorder.DataBlocks.Clear();
// check whether this is a valid pzx format file by looking at the identifier in the header block
string ident = Encoding.ASCII.GetString(data, 8, 4);
if (ident.ToUpper() != "WAVE")
{
// this is not a valid TZX format file
throw new Exception(this.GetType().ToString() +
"This is not a valid WAV format file");
}
//_position = 0;
MemoryStream stream = new MemoryStream();
stream.Write(data, 0, data.Length);
stream.Position = 0;
WavStreamReader reader = new WavStreamReader(stream);
int rate = (69888 * 50) / reader.Header.sampleRate;
int smpCounter = 0;
int state = reader.ReadNext();
// create the single tape block
TapeDataBlock t = new TapeDataBlock();
t.BlockDescription = BlockType.WAV_Recording;
t.BlockID = 0;
t.DataPeriods = new List <int>();
for (int i = 0; i < reader.Count; i++)
{
int sample = reader.ReadNext();
smpCounter++;
if ((state < 0 && sample < 0) || (state >= 0 && sample >= 0))
{
continue;
}
t.DataPeriods.Add(smpCounter * rate);
smpCounter = 0;
state = sample;
}
// add closing period
t.DataPeriods.Add((69888 * 50) / 10);
// add to datacorder
_datacorder.DataBlocks.Add(t);
}
/// <summary>
/// DeSerialization method
/// </summary>
public override void Read(byte[] data)
{
// clear existing tape blocks
_datacorder.DataBlocks.Clear();
// check whether this is a valid pzx format file by looking at the identifier in the header block
string ident = Encoding.ASCII.GetString(data, 8, 4);
if (ident.ToUpper() != "WAVE")
{
// this is not a valid TZX format file
throw new Exception(this.GetType().ToString() +
"This is not a valid WAV format file");
}
//_position = 0;
MemoryStream stream = new MemoryStream();
stream.Write(data, 0, data.Length);
stream.Position = 0;
WavStreamReader reader = new WavStreamReader(stream);
const double d = /*69888.0*/ 70000.0 * 50.0;
int rate = (int)(d / reader.Header.sampleRate);
int smpCounter = 0;
int state = reader.ReadNext();
// create the single tape block
TapeDataBlock t = new TapeDataBlock();
t.BlockDescription = BlockType.WAV_Recording;
t.BlockID = 0;
t.DataPeriods = new List <int>();
t.DataLevels = new List <bool>();
bool currLevel = false;
for (int i = 0; i < reader.Count; i++)
{
int sample = reader.ReadNext();
smpCounter++;
if ((state < 0 && sample < 0) || (state >= 0 && sample >= 0))
{
continue;
}
t.DataPeriods.Add((int)(((double)smpCounter * (double)rate) / (double)0.9838560885608856));
currLevel = !currLevel;
t.DataLevels.Add(currLevel);
smpCounter = 0;
state = sample;
}
// add closing period
t.DataPeriods.Add((69888 * 50) / 10);
currLevel = false;
t.DataLevels.Add(currLevel);
// add to datacorder
_datacorder.DataBlocks.Add(t);
/* debug stuff
*
* StringBuilder export = new StringBuilder();
* foreach (var b in _datacorder.DataBlocks)
* {
* for (int i = 0; i < b.DataPeriods.Count(); i++)
* {
* export.Append(b.DataPeriods[i].ToString());
* export.Append("\t\t");
* export.AppendLine(b.DataLevels[i].ToString());
* }
* }
*
* string o = export.ToString();
*/
}
