protected override void addImageInfo(int imageNr, Grid cell, string fontFamily, int margin)
{
if (Vm.IsAddInfo == false)
{
return;
}
cell.Margin = new Thickness(margin);
MediaFileItem item = Items[imageNr];
TextBlock name = new TextBlock();
name.TextTrimming = TextTrimming.CharacterEllipsis;
name.HorizontalAlignment = HorizontalAlignment.Center;
name.VerticalAlignment = VerticalAlignment.Bottom;
name.Text = Path.GetFileName(item.Location);
name.Foreground = new SolidColorBrush(FontColor);
Grid.SetRow(name, 0);
cell.Children.Add(name);
if (item.Metadata == null)
{
return;
}
VideoMetadata videoInfo = item.Metadata as VideoMetadata;
MediaViewer.MediaDatabase.ImageMetadata imageInfo = item.Metadata as MediaViewer.MediaDatabase.ImageMetadata;
TextBlock info = new TextBlock();
info.TextTrimming = TextTrimming.CharacterEllipsis;
info.HorizontalAlignment = HorizontalAlignment.Center;
info.VerticalAlignment = VerticalAlignment.Top;
info.Foreground = new SolidColorBrush(FontColor);
String infoText = "";
if (videoInfo != null)
{
infoText += videoInfo.Width + "x" + videoInfo.Height;
}
else
{
infoText += imageInfo.Width + "x" + imageInfo.Height;
}
infoText += ", " + MiscUtils.formatSizeBytes(item.Metadata.SizeBytes);
info.Text = infoText;
Grid.SetRow(info, 2);
cell.Children.Add(info);
}
public override void readMetadata_URLock(MetadataFactory.ReadOptions options, System.Threading.CancellationToken token)
{
MemoryStream data = new MemoryStream();
String mimeType;
try
{
ItemState = MediaItemState.LOADING;
StreamUtils.readHttpRequest(new Uri(ImageInfo.Thumbnail.MediaUrl), data, out mimeType, token);
BitmapDecoder decoder = BitmapDecoder.Create(data,
BitmapCreateOptions.PreservePixelFormat,
BitmapCacheOption.OnLoad);
BitmapSource bitmapSource = decoder.Frames[0];
bitmapSource.Freeze();
ImageMetadata metaData = new ImageMetadata(ImageInfo.MediaUrl, null);
metaData.Thumbnail = new Thumbnail(bitmapSource);
metaData.Title = ImageInfo.Title;
metaData.Location = ImageInfo.MediaUrl;
metaData.Width = ImageInfo.Width.HasValue ? ImageInfo.Width.Value : 0;
metaData.Height = ImageInfo.Height.HasValue ? ImageInfo.Height.Value : 0;
metaData.SizeBytes = ImageInfo.FileSize.HasValue ? ImageInfo.FileSize.Value : 0;
metaData.MimeType = ImageInfo.ContentType;
Metadata = metaData;
ItemState = MediaItemState.LOADED;
}
catch (Exception e)
{
if (e is System.Net.WebException &&
((System.Net.WebException)e).Status == WebExceptionStatus.Timeout)
{
ItemState = MediaItemState.TIMED_OUT;
}
else
{
ItemState = MediaItemState.ERROR;
}
}
}
public static void writeImage(String outputPath, BitmapSource image, Dictionary<String, Object> options = null, ImageMetadata metaData = null, CancellableOperationProgressBase progress = null)
{
int width = image.PixelWidth;
int height = image.PixelHeight;
float scale = ImageUtils.resizeRectangle(width, height, Constants.MAX_THUMBNAIL_WIDTH, Constants.MAX_THUMBNAIL_HEIGHT);
TransformedBitmap thumbnail = new TransformedBitmap(image, new System.Windows.Media.ScaleTransform(scale, scale));
if (options != null)
{
if (options.ContainsKey("Width"))
{
width = (int)options["Width"];
if (!options.ContainsKey("Height"))
{
height = (int)(((float)width / image.PixelWidth) * image.PixelHeight);
}
}
if (options.ContainsKey("Height")) {
height = (int)options["Height"];
if (!options.ContainsKey("Width"))
{
width = (int)(((float)height / image.PixelHeight) * image.PixelWidth);
}
}
}
BitmapSource outImage = image;
if (width != image.PixelWidth || height != image.PixelHeight)
{
outImage = new TransformedBitmap(image, new System.Windows.Media.ScaleTransform((double)width / image.PixelWidth, (double)height / image.PixelHeight));
}
ImageFormat format = MediaFormatConvert.fileNameToImageFormat(outputPath);
BitmapEncoder encoder = null;
if (format == ImageFormat.Jpeg)
{
encoder = configureJpeg(options, ref thumbnail);
}
else if (format == ImageFormat.Png)
{
encoder = configurePng(options);
}
else if (format == ImageFormat.Gif)
{
encoder = new GifBitmapEncoder();
}
else if (format == ImageFormat.Bmp)
{
encoder = new BmpBitmapEncoder();
}
else if (format == ImageFormat.Tiff)
{
encoder = configureTiff(options);
}
encoder.Frames.Add(BitmapFrame.Create(outImage, thumbnail, null, null));
FileStream outputFile = new FileStream(outputPath, FileMode.Create);
encoder.Save(outputFile);
outputFile.Close();
if (metaData != null)
{
metaData.Location = outputPath;
ImageFileMetadataWriter metadataWriter = new ImageFileMetadataWriter();
metadataWriter.writeMetadata(metaData, progress);
}
}
void getImageProperties(ObservableCollection<Tuple<String, String>> p, ImageMetadata image)
{
p.Add(new Tuple<string, string>("", "IMAGE"));
p.Add(new Tuple<string, string>("Image Container", image.ImageContainer));
p.Add(new Tuple<string, string>("Resolution", image.Width + " x " + image.Height));
p.Add(new Tuple<string, string>("Pixel Format", image.PixelFormat));
p.Add(new Tuple<string, string>("Bits Per Pixel", image.BitsPerPixel.ToString()));
}
public void generateThumbnail(MediaProbe mediaProbe, ImageMetadata image,
CancellationToken token, int timeoutSeconds, int nrThumbnails)
{
// possibly could not seek in video, try to get the first frame in the video
List<MediaThumb> thumbBitmaps = mediaProbe.grabThumbnails(Constants.MAX_THUMBNAIL_WIDTH,
Constants.MAX_THUMBNAIL_HEIGHT, 0, 1, 0, token, timeoutSeconds, null);
if (thumbBitmaps.Count > 0)
{
BitmapSource thumb = thumbBitmaps[0].Thumb;
if (image.Orientation.HasValue && image.Orientation.Value != 1)
{
System.Windows.Media.Transform transform = null;
switch (image.Orientation.Value)
{
case 2:
{
//Mirror horizontal
transform = new System.Windows.Media.MatrixTransform(-1, 0, 0, 1, 0, 0);
break;
}
case 3:
{
//Rotate 180°
transform = new System.Windows.Media.RotateTransform(180);
break;
}
case 4:
{
//Mirror vertical
transform = new System.Windows.Media.MatrixTransform(1, 0, 0, -1, 0, 0);
break;
}
case 5:
{
//Mirror horizontal, rotate 270°
transform = new System.Windows.Media.MatrixTransform(0, -1, -1, 0, 0, 0);
break;
}
case 6:
{
//Rotate 90°
transform = new System.Windows.Media.RotateTransform(90);
break;
}
case 7:
{
//Mirror horizontal, rotate 90°
transform = new System.Windows.Media.MatrixTransform(0, 1, 1, 0, 0, 0);
break;
}
case 8:
{
//Rotate 270°
transform = new System.Windows.Media.RotateTransform(270);
break;
}
default:
{
Logger.Log.Warn("Unknown orientation for image");
break;
}
}
if (transform != null)
{
thumb = new TransformedBitmap(thumb, transform);
}
}
image.Thumbnail = new Thumbnail(thumb);
}
else
{
image.Thumbnail = null;
}
}
public static BaseMetadata read(String location, MetadataFactory.ReadOptions options, CancellationToken token, int timeoutSeconds)
{
BaseMetadata metadata = new UnknownMetadata(FileUtils.getPathWithoutFileName(location));
metadata.Name = Path.GetFileName(location);
Logger.Log.Info("Reading metadata for: " + location);
int timeoutMs = timeoutSeconds * 1000;
Stream data = FileUtils.waitForFileAccess(location, FileAccess.Read, timeoutMs, token);
MediaProbe mediaProbe = new MediaProbe();
try
{
mediaProbe.open(location, token);
switch (mediaProbe.MediaType)
{
case MediaType.AUDIO_MEDIA:
{
metadata = new AudioMetadata(location, data);
AudioFileMetadataReader reader = new AudioFileMetadataReader();
reader.readMetadata(mediaProbe, data, options, metadata, token, timeoutSeconds);
break;
}
case MediaType.IMAGE_MEDIA:
{
metadata = new ImageMetadata(location, data);
ImageFileMetadataReader reader = new ImageFileMetadataReader();
reader.readMetadata(mediaProbe, data, options, metadata, token, timeoutSeconds);
break;
}
case MediaType.VIDEO_MEDIA:
{
metadata = new VideoMetadata(location, data);
VideoFileMetadataReader reader = new VideoFileMetadataReader();
reader.readMetadata(mediaProbe, data, options, metadata, token, timeoutSeconds);
break;
}
default:
break;
}
FileInfo info = new FileInfo(location);
info.Refresh();
if (info.Attributes.HasFlag(FileAttributes.ReadOnly))
{
metadata.IsReadOnly = true;
}
if (!options.HasFlag(MetadataFactory.ReadOptions.LEAVE_STREAM_OPENED_AFTER_READ))
{
metadata.close();
}
}
catch (Exception e)
{
metadata.MetadataReadError = e;
}
finally
{
mediaProbe.close();
mediaProbe.Dispose();
}
return metadata;
}
