///<inheritdoc/>
public override Task EjectAsync(Stream source, Stream destination, IProgress <double> progress = null, CancellationToken cancellationToken = default)
{
using WaveFile input = new WaveFile(source);
int count = input.DataSize * input.Format.NumChannels * LsbDepth;
int pos = 0;
BitArray message = new BitArray(count, false);
while (true)
{
if (cancellationToken.IsCancellationRequested)
{
cancellationToken.ThrowIfCancellationRequested();
}
Sample sample = input.GetNextSample();
if (sample == null)
{
break;
}
foreach (Channel channel in sample.Channels)
{
BitArray bitArray = new BitArray(channel.Data);
for (int i = 0; i < LsbDepth; i++)
{
message[pos] = bitArray[i];
pos++;
}
}
if (progress != null)
{
progress.Report(pos / (double)input.DataSize);
}
}
byte[] bytes = message.ToBytes();
List <byte> result;
if (Eof == null)
{
result = new List <byte>(bytes);
}
else
{
result = new List <byte>();
bool success = false;
for (int i = 0; i < bytes.Length; i++)
{
if (bytes[i] == Eof[0])
{
if (IsEndOfFileSequence(bytes, i))
{
success = true;
break;
}
}
result.Add(bytes[i]);
}
if (EnsureSuccess && !success)
{
throw new EndOfFileException("Failed to locate the specified EOF");
}
}
destination.Position = 0;
destination.Write(result.ToArray(), 0, result.Count);
destination.Flush();
return(Task.CompletedTask);
}
///<inheritdoc/>
public override Task InjectAsync(Stream source, Stream destination, Stream data, IProgress <double> progress = null, CancellationToken cancellationToken = default)
{
using WaveFile input = new WaveFile(source);
using WaveFile output = new WaveFile(destination);
output.DuplicateFormat(input);
List <byte> ls_data = new List <byte>(data.ReadAllBytes());
if (Eof != null)
{
ls_data.AddRange(Eof);
}
BitArray message = new BitArray(ls_data.ToArray());
int count = message.Length;
int maxData = input.DataSize * input.Format.NumChannels * LsbDepth;
if (EnsureSuccess)
{
if (count > maxData)
{
throw new InsufficientSpaceException("A successful write cannot be ensured because the data is too large");
}
}
int pos = 0;
while (true)
{
bool stop = false;
if (cancellationToken.IsCancellationRequested)
{
cancellationToken.ThrowIfCancellationRequested();
}
Sample sample = input.GetNextSample();
if (sample == null)
{
break;
}
foreach (Channel channel in sample.Channels)
{
if (stop == true)
{
break;
}
BitArray bitArray = new BitArray(channel.Data);
for (int i = 0; i < LsbDepth; i++)
{
if (pos == count)
{
stop = true;
break;
}
bitArray[i] = message[pos];
pos++;
}
channel.Data = bitArray.ToBytes();
}
output.WriteSample(sample);
if (progress != null)
{
progress.Report(pos / (double)maxData);
}
}
return(Task.CompletedTask);
}
