C# (CSharp) Windows.Graphics.Imaging.BitmapPropertySet Beispiele

Beispiel #1

Datei: AdvancedCapture.xaml.cs Projekt: younes113/msdn-code-gallery-microsoft

        private async Task <Windows.Storage.StorageFile> ReencodePhotoAsync(
            Windows.Storage.StorageFile tempStorageFile,
            Windows.Storage.FileProperties.PhotoOrientation photoRotation)
        {
            Windows.Storage.Streams.IRandomAccessStream inputStream  = null;
            Windows.Storage.Streams.IRandomAccessStream outputStream = null;
            Windows.Storage.StorageFile photoStorage = null;

            try
            {
                inputStream = await tempStorageFile.OpenAsync(Windows.Storage.FileAccessMode.Read);

                var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(inputStream);

                photoStorage = await Windows.Storage.KnownFolders.PicturesLibrary.CreateFileAsync(PHOTO_FILE_NAME, Windows.Storage.CreationCollisionOption.GenerateUniqueName);

                outputStream = await photoStorage.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);

                outputStream.Size = 0;

                var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateForTranscodingAsync(outputStream, decoder);

                var properties = new Windows.Graphics.Imaging.BitmapPropertySet();
                properties.Add("System.Photo.Orientation",
                               new Windows.Graphics.Imaging.BitmapTypedValue(photoRotation, Windows.Foundation.PropertyType.UInt16));

                await encoder.BitmapProperties.SetPropertiesAsync(properties);

                await encoder.FlushAsync();
            }
            finally
            {
                if (inputStream != null)
                {
                    inputStream.Dispose();
                }

                if (outputStream != null)
                {
                    outputStream.Dispose();
                }

                var asyncAction = tempStorageFile.DeleteAsync(Windows.Storage.StorageDeleteOption.PermanentDelete);
            }

            return(photoStorage);
        }

Beispiel #2

Datei: AdvancedCapture.xaml.cs Projekt: oldnewthing/old-Windows8-samples

        private async Task<Windows.Storage.StorageFile> ReencodePhotoAsync(
            Windows.Storage.Streams.IRandomAccessStream stream,
            Windows.Storage.FileProperties.PhotoOrientation photoRotation)
        {
            Windows.Storage.Streams.IRandomAccessStream inputStream = null;
            Windows.Storage.Streams.IRandomAccessStream outputStream = null;
            Windows.Storage.StorageFile photoStorage = null;

            try
            {
                inputStream = stream;

                var decoder = await Windows.Graphics.Imaging.BitmapDecoder.CreateAsync(inputStream);

                photoStorage = await Windows.Storage.KnownFolders.PicturesLibrary.CreateFileAsync(PHOTO_FILE_NAME, Windows.Storage.CreationCollisionOption.GenerateUniqueName);

                outputStream = await photoStorage.OpenAsync(Windows.Storage.FileAccessMode.ReadWrite);

                outputStream.Size = 0;

                var encoder = await Windows.Graphics.Imaging.BitmapEncoder.CreateForTranscodingAsync(outputStream, decoder);

                var properties = new Windows.Graphics.Imaging.BitmapPropertySet();
                properties.Add("System.Photo.Orientation",
                    new Windows.Graphics.Imaging.BitmapTypedValue(photoRotation, Windows.Foundation.PropertyType.UInt16));

                await encoder.BitmapProperties.SetPropertiesAsync(properties);

                await encoder.FlushAsync();
            }
            finally
            {
                if (inputStream != null)
                {
                    inputStream.Dispose();
                }

                if (outputStream != null)
                {
                    outputStream.Dispose();
                }
            }

            return photoStorage;
        }