/// <summary>
/// Provides a standard implementation of HttpGet
/// </summary>
/// <param name="get">The HttpGet message to process</param>
/// <param name="state">The webcam state</param>
/// <param name="transform">The embedded resource to use as the XSLT transform</param>
public void HttpGetHelper(HttpGet get, WebCamSensorState state, string transform)
{
var copy = state.Clone() as WebCamSensorState;
copy.Data = null;
get.ResponsePort.Post(
new HttpResponseType(
HttpStatusCode.OK,
copy,
transform));
}
/// <summary>
/// Provides a standard implementation of HttpQuery
/// </summary>
/// <param name="query">The HttpQuery message to process</param>
/// <param name="state">The webcam state</param>
/// <param name="transform">The embedded resource to use as the XSLT transform</param>
/// <param name="utilitiesPort">The utilities port used to stream images</param>
/// <returns>Stanard CCR iterator</returns>
public IEnumerator <ITask> HttpQueryHelper(HttpQuery query, WebCamSensorState state, string transform, DsspHttpUtilitiesPort utilitiesPort)
{
var type = query.Body.Query[QueryType];
var mediaType = string.Empty;
var format = default(sdi.ImageFormat);
switch (type.ToLowerInvariant())
{
case Jpeg:
format = sdi.ImageFormat.Jpeg;
mediaType = MediaTypeNames.Image.Jpeg;
break;
case Gif:
format = sdi.ImageFormat.Gif;
mediaType = MediaTypeNames.Image.Gif;
break;
case Png:
format = sdi.ImageFormat.Png;
mediaType = MediaPng;
break;
case Bmp:
format = sdi.ImageFormat.Bmp;
mediaType = MediaBmp;
break;
default:
var copy = state.Clone() as WebCamSensorState;
copy.Data = null;
query.ResponsePort.Post(
new HttpResponseType(
HttpStatusCode.OK,
copy,
transform));
yield break;
}
if (state.Data == null || state.Data.Length == 0)
{
query.ResponsePort.Post(
new HttpResponseType(
HttpStatusCode.OK,
state,
transform));
yield break;
}
using (var image = state.Bitmap)
{
using (var mem = new MemoryStream())
{
image.Save(mem, format);
mem.Position = 0;
var response = new WriteResponseFromStream(
query.Body.Context,
mem,
mediaType);
utilitiesPort.Post(response);
yield return(response.ResultPort.Choice());
}
}
}