internal void AddOutput(int ioId, IOutputDestination destination)
{
if (_inputs.ContainsKey(ioId) || _outputs.ContainsKey(ioId))
{
throw new ArgumentException("ioId", $"ioId {ioId} has already been assigned");
}
_outputs.Add(ioId, destination);
}
public BuildEndpoint BuildCommandString(IBytesSource source, int?sourceIoId, IOutputDestination dest, int?destIoId, string commandString, ICollection <InputWatermark> watermarks)
{
sourceIoId = sourceIoId ?? GenerateIoId();
AddInput(sourceIoId.Value, source);
destIoId = destIoId ?? GenerateIoId();
AddOutput(destIoId.Value, dest);
if (watermarks != null)
{
foreach (var w in watermarks)
{
if (w.IoId == null && w.Source == null)
{
throw new ArgumentException("InputWatermark instances cannot have both a null IoId and a null Source");
}
if (w.IoId == null)
{
w.IoId = this.GenerateIoId();
}
if (w.Source != null)
{
AddInput(w.IoId.Value, w.Source);
}
}
}
dynamic nodeData = new
{
command_string = new
{
kind = "ir4",
value = commandString,
decode = sourceIoId,
encode = destIoId,
watermarks = watermarks?.Select(w => w.ToImageflowDynamic()).ToArray()
}
};
return(new BuildEndpoint(this, nodeData, null, null));
}
public static async Task CopyFromStreamAsync(this IOutputDestination dest, Stream stream,
CancellationToken cancellationToken)
{
if (stream.CanRead && stream.CanSeek)
{
await dest.RequestCapacityAsync((int)stream.Length);
}
const int bufferSize = 81920;
var buffer = new byte[bufferSize];
int bytesRead;
while ((bytesRead =
await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
{
await dest.WriteAsync(new ArraySegment <byte>(buffer, 0, bytesRead), cancellationToken)
.ConfigureAwait(false);
}
await dest.FlushAsync(cancellationToken);
}
public BuildEndpoint Encode(IOutputDestination destination, IEncoderPreset encoderPreset) => Encode(destination, Builder.GenerateIoId(), encoderPreset);
public BuildEndpoint Encode(IOutputDestination destination, int ioId, IEncoderPreset encoderPreset)
{
Builder.AddOutput(ioId, destination);
return(new BuildEndpoint(Builder,
new { encode = new { io_id = ioId, preset = encoderPreset?.ToImageflowDynamic() } }, this, null));
}
/// <summary>
/// Modify the input image (source) with the given command string and watermarks and encode to the (dest)
/// </summary>
/// <param name="source"></param>
/// <param name="dest"></param>
/// <param name="commandString"></param>
/// <param name="watermarks"></param>
/// <returns></returns>
public BuildEndpoint BuildCommandString(IBytesSource source, IOutputDestination dest, string commandString,
ICollection <InputWatermark> watermarks)
=> BuildCommandString(source, null, dest, null, commandString, watermarks);
public BuildEndpoint BuildCommandString(IBytesSource source, int?sourceIoId, IOutputDestination dest,
int?destIoId, string commandString)
=> BuildCommandString(source, sourceIoId, dest, destIoId, commandString, null);
public BuildEndpoint BuildCommandString(IBytesSource source, IOutputDestination dest, string commandString) => BuildCommandString(source, null, dest, null, commandString);
public BuildEndpoint BuildCommandString(byte[] source, IOutputDestination dest, string commandString) => BuildCommandString(new BytesSource(source), dest, commandString);