private static void GetExifData(Stream image, Photo data)
{
image.Seek(0, SeekOrigin.Begin);
using (var reader = new ExifLib.ExifReader(image))
{
String timeString;
if (reader.GetTagValue(ExifTags.DateTimeOriginal, out timeString))
{
DateTime timeStamp;
if (DateTime.TryParseExact(timeString, "yyyy:MM:dd hh:mm:ss",
CultureInfo.InvariantCulture,
DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.AssumeLocal,
out timeStamp))
data.TimeStamp = timeStamp;
}
UInt16 hres, vres;
object tagVal;
if (reader.GetTagValue(ExifTags.PixelXDimension, out hres))
data.Hres = (int) hres;
if (reader.GetTagValue(ExifTags.PixelYDimension, out vres))
data.Vres = (int) vres;
if (reader.GetTagValue(ExifTags.FNumber, out tagVal))
data.FStop = string.Format("f/{0:g2}", tagVal.ToString());
if (reader.GetTagValue(ExifTags.ExposureTime, out tagVal))
data.ShutterSpeed = string.Format("1/{0:g0}", 1/(double) tagVal);
if (reader.GetTagValue(ExifTags.ISOSpeedRatings, out tagVal))
data.ISOspeed = (short) (ushort) tagVal;
if (reader.GetTagValue(ExifTags.FocalLength, out tagVal))
data.FocalLength = (short) (double) tagVal;
if (reader.GetTagValue(ExifTags.SubsecTimeOriginal, out timeString))
{
int msec;
if (int.TryParse(timeString, out msec))
{
data.TimeStamp += new TimeSpan(0, 0, 0, 0, msec);
}
}
}
}
private void CopyWriteableValues(PhotoData newValues, Photo existingValues)
{
existingValues.Card = newValues.Card;
var photographer = _db.Photographers.Find(ph => ph.Initials == newValues.PhotographerInitials).FirstOrDefault();
if (photographer != null)
existingValues.Photographer = photographer;
existingValues.Event = _db.Events.Find(e => e.EventName == newValues.Event).SingleOrDefault();
existingValues.Sequence = newValues.Sequence;
existingValues.Station = newValues.Station;
}
public HttpResponseMessage Post()
{
var returnCode = HttpStatusCode.Created;
Trace.TraceInformation("Got request to upload photo" );
var data = new Photo();
data.Id = Guid.NewGuid();
data.Path = "originals/" + data.Id.ToString();
Trace.TraceInformation("PhotoStoragePath = {0}", data.Path);
var request = ControllerContext.Request;
if (request.Content == null || request.Content.Headers == null || request.Content.Headers.ContentType == null)
{ return new HttpResponseMessage(HttpStatusCode.BadRequest);}
var contentType = request.Content.Headers.ContentType.MediaType;
if (contentType == "image/jpeg" || contentType == "image/jpg")
{
var imageSize = request.Content.Headers.ContentLength;
Trace.TraceInformation("ContentLength is {0} bytes", imageSize);
byte[] imageArray;
using (var image = request.Content.ReadAsStreamAsync().Result)
{
if (!imageSize.HasValue)
{
imageSize = (int) image.Length;
}
var imageSz = (int) imageSize.Value;
imageArray = new byte[imageSz];
int bytesRead = 0;
while (bytesRead < imageSz)
{
bytesRead += image.Read(imageArray, bytesRead, imageSz - bytesRead);
}
data.FileSize = bytesRead;
data.LastAccessed = DateTime.Now;
Trace.TraceInformation("Getting Exif Data");
GetExifData(image, data);
image.Close();
}
Trace.TraceInformation("Writing photo to storage file {0}", data.Path);
_storage.WriteFile(data.Path, imageArray);
data.Server = request.RequestUri.Host;
data.CreatedBy = context.User.Identity.Name;
data.CreatedDate = DateTime.Now;
if (returnCode == HttpStatusCode.Created)
{
Trace.TraceInformation("Adding photo data to database");
_db.Photos.Add(data);
_db.SaveChanges();
}
}
else
{
return new HttpResponseMessage(HttpStatusCode.BadRequest);
}
var response = new HttpResponseMessage(returnCode);
if (returnCode == HttpStatusCode.Created)
{
var uri = new Uri("/api/Photos/" + data.Id.ToString(), UriKind.Relative);
response.Headers.Location = uri;
var modelData = Mapper.Map<PhotoServer.Domain.Photo, Models.PhotoData>(data);
response.Content = new ObjectContent<Models.PhotoData>(modelData, new JsonMediaTypeFormatter());
}
return response;
}
