static async Task ConvertFile(string filename)
{
try
{
if (!System.IO.Path.IsPathRooted(filename))
{
filename = System.IO.Path.GetFullPath(filename);
}
filename = System.IO.Path.GetFullPath(filename);
var inputFile = await Windows.Storage.StorageFile.GetFileFromPathAsync(filename);
using (var stream = await inputFile.OpenReadAsync())
{
var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(stream);
if (decoder.DecoderInformation.CodecId == Windows.Graphics.Imaging.BitmapDecoder.JpegDecoderId)
{
// Already JPEG file
if (!decoder.DecoderInformation.FileExtensions.Contains(inputFile.FileType, StringComparer.OrdinalIgnoreCase))
{
//Rename to .JPG file
var filename2 = System.IO.Path.ChangeExtension(filename, ".jpg");
await inputFile.RenameAsync(System.IO.Path.ChangeExtension(filename, ".jpg"));
Console.WriteLine($"Renamed '{filename}' to '{filename2}'");
}
else
{
Console.WriteLine($"'{filename}' is already a JPEG file.");
}
return;
}
var bitmap = await decoder.GetSoftwareBitmapAsync();
var outputFilename = System.IO.Path.GetFileName(System.IO.Path.ChangeExtension(filename, ".jpg"));
var outputFile = await(await inputFile.GetParentAsync())
.CreateFileAsync(outputFilename, Windows.Storage.CreationCollisionOption.ReplaceExisting);
using (var outputStream = await outputFile.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite))
{
var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateAsync(Windows.Graphics.Imaging.BitmapEncoder.JpegEncoderId, outputStream);
encoder.SetSoftwareBitmap(bitmap);
encoder.IsThumbnailGenerated = true;
await encoder.FlushAsync();
}
// Copy EXIF data.
//Get the EXIF data from the original photo.
var photoProperties = await inputFile.Properties.RetrievePropertiesAsync(SystemPhotoProperties.Union(SystemGpsProperties));
foreach (var p in photoProperties.OrderBy(k => k.Key))
{
//Console.WriteLine($"{p.Key}: {p.Value}");
System.Diagnostics.Trace.WriteLine($"{p.Key}: {(p.Value is Array ? string.Join(",", ((Array)p.Value).Cast<object>()) : p.Value)}");
}
await outputFile.Properties.SavePropertiesAsync(photoProperties);
}
}
catch (Exception ex)
{
Console.WriteLine($"Error converting file '{filename}': {ex.Message}");
System.Diagnostics.Trace.WriteLine($"Error converting file '{filename}': {ex.ToString()}");
}
}
static async Task ConvertFile(string filename)
{
try
{
await Task.CompletedTask;
filename = System.IO.Path.GetFullPath(filename);
var imagingFactory = new WIC.WICImagingFactory();
var decoder = imagingFactory.CreateDecoderFromFilename(filename, Guid.Empty, WIC.StreamAccessMode.GENERIC_READ,
WIC.WICDecodeOptions.WICDecodeMetadataCacheOnLoad);
//ShowMetadata(decoder.GetFrame(0));
if (decoder.GetDecoderInfo().GetCLSID() == WIC.Decoder.Jpeg)
{
Console.WriteLine($"'{filename}' is already a JPEG file.");
return;
}
var output = imagingFactory.CreateStream();
output.InitializeFromFilename(System.IO.Path.ChangeExtension(filename, ".jpg"), WIC.StreamAccessMode.GENERIC_WRITE);
var encoder = imagingFactory.CreateEncoder(ContainerFormat.Jpeg);
encoder.Initialize(output, WICBitmapEncoderCacheOption.WICBitmapEncoderNoCache);
for (int i = 0; i < decoder.GetFrameCount(); i++)
{
var frame = decoder.GetFrame(i);
encoder.CreateNewFrame(out var frameJpg, null);
frameJpg.Initialize(null);
frameJpg.SetSize(frame.GetSize());
frameJpg.SetResolution(frame.GetResolution());
frameJpg.SetPixelFormat(frame.GetPixelFormat());
var reader = frame.AsMetadataBlockReader();
var count = reader.GetCount();
//Get the EXIF data from the original photo.
var metadataReader = frame.GetMetadataQueryReader();
var metadataWriter = frameJpg.GetMetadataQueryWriter();
foreach (var name in metadataReader.GetNamesRecursive())
{
try {
var val = metadataReader.GetMetadataByName(name);
if (name.StartsWith("/ifd/"))
{
metadataWriter.SetMetadataByName("/app1" + name.Replace("/ifd/{ushort=34665}/", "/ifd/exif/").Replace("/ifd/{ushort=34853}/", "/ifd/gps/"), val);
}
else if (name.StartsWith("/xmp/"))
{
metadataWriter.SetMetadataByName(name, val);
}
}
catch {
System.Diagnostics.Trace.WriteLine($"Error setting '{name}'");
}
}
var photoProperties = SystemProperties.Concat(SystemPhotoProperties.Concat(SystemGpsProperties));
foreach (var photoProp in photoProperties)
{
var action = "getting";
try
{
var val = metadataReader.GetMetadataByName(photoProp);
//System.Diagnostics.Trace.WriteLine($"{photoProp} = {val}");
action = "setting";
metadataWriter.SetMetadataByName(photoProp, val);
}
catch (Exception ex)
{
System.Diagnostics.Trace.WriteLine($"Error {action} '{photoProp}': " + ex.Message);
}
}
frameJpg.WriteSource(frame);
frameJpg.Commit();
frame = null;
frameJpg = null;
}
encoder.Commit();
output.Commit(WIC.STGC.STGC_DEFAULT);
encoder = null;
output = null;
}
catch (Exception ex)
{
Console.WriteLine($"Error converting file '{filename}': {ex.Message}");
System.Diagnostics.Trace.WriteLine($"Error converting file '{filename}': {ex.ToString()}");
}
}
