/// <summary>
/// Save the primitive image and thumbnail image and return the Photo model with local url
/// </summary>
/// <param name="imageBuffer"></param>
/// <returns></returns>
public static async Task<Photo> SaveImage(IBuffer imageBuffer)
{
try
{
Photo photo = new Photo
{
CreatedTime = DateTime.UtcNow
};
AutoResizeConfiguration tbRC = null;
AutoResizeConfiguration pvRC = null;
Rect thumbnailRect;
Size pvSize;
using (var source = new BufferImageSource(imageBuffer))
{
var info = await source.GetInfoAsync();
//var thumbnailSize = ImageHelper.CalculateSize(info.ImageSize);
thumbnailRect = CalculateRect(info.ImageSize);
pvSize = CalculateSize(info.ImageSize);
tbRC = new AutoResizeConfiguration(ImageHelper.thumbnailMaxBytes, thumbnailMaxSize, new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
pvRC = new AutoResizeConfiguration(ImageHelper.pvMaxBytes, pvSize, new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
}
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
//Get LocalPath
var localPath = AppResources.LocalImagePath;
if (!store.DirectoryExists(localPath))
{
store.CreateDirectory(localPath);
}
//Save the primitive bitmap file
using (var file = store.CreateFile(photo.LocalUri = localPath + @"\" + photo.Tag + @"_Raw"))
{
using (var localImage = imageBuffer.AsStream())
{
localImage.CopyTo(file);
file.Flush();
localImage.Close();
}
}
//Save Preview Image
if (pvRC != null)
{
//Resize the Image to priview image
var pvBuffer = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(imageBuffer, pvRC);
//Save Preview Image
using (var file = store.CreateFile(localPath + @"\" + photo.Tag + @"_Preview.jpg"))
{
photo.PreviewDetailUri = file.Name;
;
using (var localImage = pvBuffer.AsStream())
{
localImage.CopyTo(file);
file.Flush();
localImage.Close();
}
}
}
//Save thumbnail Image
if(tbRC != null)
{
//Crop to the square
var rb = await Reframe(imageBuffer, thumbnailRect);
//Resize the Image to thumbnail
var tb = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(rb, tbRC);
//Save thumbnail
using (var file = store.CreateFile(photo.LocalThumbnailUri = localPath + @"\" + photo.Tag + @"_Thumbnail.jpg"))
{
photo.ThumbnailDetailUri = file.Name;
using (var localImage = tb.AsStream())
{
localImage.CopyTo(file);
file.Flush();
localImage.Close();
}
}
}
}
return photo;
}
catch (Exception ex)
{
throw ex;
}
}
private async Task <string> SaveToCameraRoll(Stream cameraImage, string filenameBase)
{
string filename = filenameBase + ".jpg";
StorageFolder storageFolder = KnownFolders.CameraRoll;
AutoResizeConfiguration resizeConfiguration = null;
var buffer = StreamToBuffer(cameraImage);
// Store low resolution image
using (var source = new BufferImageSource(buffer))
{
var info = await source.GetInfoAsync();
if (info.ImageSize.Width * info.ImageSize.Height > LibraryMaxArea)
{
var compactedSize = CalculateSize(info.ImageSize, LibraryMaxSize, LibraryMaxArea);
resizeConfiguration = new AutoResizeConfiguration(LibraryMaxBytes, compactedSize,
new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
buffer = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
}
using (var library = new MediaLibrary())
{
library.SavePictureToCameraRoll(filename, buffer.AsStream());
}
}
// Store high resolution image
if (resizeConfiguration != null)
{
filename = filenameBase + HIGH_RESOLUTION_PHOTO_SUFFIX + @".jpg";
cameraImage.Position = 0;
using (var stream = await storageFolder.OpenStreamForWriteAsync(filename, CreationCollisionOption.GenerateUniqueName))
{
await cameraImage.CopyToAsync(stream);
}
}
_saved = true;
return(storageFolder.Path + "\\" + filename);
}
/// <summary>
/// Asynchronously saves a low resolution version of the photo to MediaLibrary and if the photo is too large to be saved
/// to MediaLibrary as is also saves the original high resolution photo to application's local storage so that the
/// high resolution version is not lost.
/// </summary>
public async Task SaveAsync()
{
if (_image != null && _image.Length > 0 && LibraryPath == null)
{
var buffer = StreamToBuffer(_image);
AutoResizeConfiguration resizeConfiguration = null;
using (var source = new BufferImageSource(buffer))
{
var info = await source.GetInfoAsync();
if (info.ImageSize.Width * info.ImageSize.Height > LibraryMaxArea)
{
var compactedSize = CalculateSize(info.ImageSize, LibraryMaxSize, LibraryMaxArea);
resizeConfiguration = new AutoResizeConfiguration(LibraryMaxBytes, compactedSize,
new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
}
}
var filenameBase = "photoinspector";
if (_original != null)
{
if (_originalPath != null)
{
var originalPathParts = _originalPath.Split(new char[] { '_', '.' }, StringSplitOptions.RemoveEmptyEntries);
filenameBase += '_' + originalPathParts[1];
}
else
{
filenameBase += '_' + DateTime.UtcNow.Ticks.ToString();
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.DirectoryExists(Mapping.ORIGINALS_PATH))
{
store.CreateDirectory(Mapping.ORIGINALS_PATH);
}
var originalPath = Mapping.ORIGINALS_PATH + @"\" + filenameBase + @".jpg";
using (var file = store.CreateFile(originalPath))
{
_original.Position = 0;
_original.CopyTo(file);
file.Flush();
OriginalPath = originalPath;
}
}
}
}
filenameBase += '_' + DateTime.UtcNow.Ticks.ToString();
if (resizeConfiguration != null)
{
// Store high resolution original to application local storage
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.DirectoryExists(Mapping.LOCALS_PATH))
{
store.CreateDirectory(Mapping.LOCALS_PATH);
}
var localPath = Mapping.LOCALS_PATH + @"\" + filenameBase + @".jpg";
using (var file = store.CreateFile(localPath))
{
_image.Position = 0;
_image.CopyTo(file);
file.Flush();
LocalPath = localPath;
}
}
// Compact the buffer for saving to the library
buffer = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
}
using (var libraryImage = buffer.AsStream())
{
libraryImage.Position = 0;
using (var library = new MediaLibrary())
{
using (var picture = library.SavePictureToCameraRoll(filenameBase, libraryImage))
{
LibraryPath = picture.GetPath();
}
}
}
}
}
/// <summary>
/// Asynchronously saves a low resolution version of the photo to MediaLibrary and if the photo is too large to be saved
/// to MediaLibrary as is also saves the original high resolution photo to application's local storage so that the
/// high resolution version is not lost.
/// </summary>
public async Task SaveAsync()
{
if (_image != null && _image.Length > 0 && LibraryPath == null)
{
var buffer = StreamToBuffer(_image);
AutoResizeConfiguration resizeConfiguration = null;
using (var source = new BufferImageSource(buffer))
{
var info = await source.GetInfoAsync();
if (info.ImageSize.Width * info.ImageSize.Height > LibraryMaxArea)
{
var compactedSize = CalculateSize(info.ImageSize, LibraryMaxSize, LibraryMaxArea);
resizeConfiguration = new AutoResizeConfiguration(LibraryMaxBytes, compactedSize,
new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
}
}
var filenameBase = "photoinspector";
if (_original != null)
{
if (_originalPath != null)
{
var originalPathParts = _originalPath.Split(new char[] { '_', '.' }, StringSplitOptions.RemoveEmptyEntries);
filenameBase += '_' + originalPathParts[1];
}
else
{
filenameBase += '_' + DateTime.UtcNow.Ticks.ToString();
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.DirectoryExists(Mapping.ORIGINALS_PATH))
{
store.CreateDirectory(Mapping.ORIGINALS_PATH);
}
var originalPath = Mapping.ORIGINALS_PATH + @"\" + filenameBase + @".jpg";
using (var file = store.CreateFile(originalPath))
{
_original.Position = 0;
_original.CopyTo(file);
file.Flush();
OriginalPath = originalPath;
}
}
}
}
filenameBase += '_' + DateTime.UtcNow.Ticks.ToString();
if (resizeConfiguration != null)
{
// Store high resolution original to application local storage
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!store.DirectoryExists(Mapping.LOCALS_PATH))
{
store.CreateDirectory(Mapping.LOCALS_PATH);
}
var localPath = Mapping.LOCALS_PATH + @"\" + filenameBase + @".jpg";
using (var file = store.CreateFile(localPath))
{
_image.Position = 0;
_image.CopyTo(file);
file.Flush();
LocalPath = localPath;
}
}
// Compact the buffer for saving to the library
buffer = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
}
using (var libraryImage = buffer.AsStream())
{
libraryImage.Position = 0;
using (var library = new MediaLibrary())
{
using (var picture = library.SavePictureToCameraRoll(filenameBase, libraryImage))
{
LibraryPath = picture.GetPath();
}
}
}
}
}
private async Task<string> SaveToCameraRoll(Stream cameraImage, string filenameBase)
{
string filename = filenameBase + ".jpg";
StorageFolder storageFolder = KnownFolders.CameraRoll;
AutoResizeConfiguration resizeConfiguration = null;
var buffer = StreamToBuffer(cameraImage);
// Store low resolution image
using (var source = new BufferImageSource(buffer))
{
var info = await source.GetInfoAsync();
if (info.ImageSize.Width * info.ImageSize.Height > LibraryMaxArea)
{
var compactedSize = CalculateSize(info.ImageSize, LibraryMaxSize, LibraryMaxArea);
resizeConfiguration = new AutoResizeConfiguration(LibraryMaxBytes, compactedSize,
new Size(0, 0), AutoResizeMode.Automatic, 0, ColorSpace.Yuv420);
buffer = await Nokia.Graphics.Imaging.JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
}
using (var library = new MediaLibrary())
{
library.SavePictureToCameraRoll(filename, buffer.AsStream());
}
}
// Store high resolution image
if (resizeConfiguration != null)
{
filename = filenameBase + HIGH_RESOLUTION_PHOTO_SUFFIX + @".jpg";
cameraImage.Position = 0;
using (var stream = await storageFolder.OpenStreamForWriteAsync(filename, CreationCollisionOption.GenerateUniqueName))
{
await cameraImage.CopyToAsync(stream);
}
}
_saved = true;
return storageFolder.Path + "\\" + filename;
}
private async Task <IRandomAccessStream> ResizeStreamAsync(IRandomAccessStream stream, Size size, PhotoOrientation orientation)
{
var rotation = 0;
switch (orientation)
{
case PhotoOrientation.Rotate180:
{
rotation = -180;
};
break;
case PhotoOrientation.Rotate270:
{
rotation = -270;
};
break;
case PhotoOrientation.Rotate90:
{
rotation = -90;
};
break;
}
using (var resizedStream = new InMemoryRandomAccessStream())
{
var buffer = new byte[stream.Size].AsBuffer();
stream.Seek(0);
await stream.ReadAsync(buffer, buffer.Length, InputStreamOptions.None);
var resizeConfiguration = new AutoResizeConfiguration(
(uint)(size.Width * size.Height * 4 * 2), size,
new Size(0, 0), AutoResizeMode.Automatic, 0.7, ColorSpace.Yuv420);
buffer = await JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
await resizedStream.WriteAsync(buffer);
await resizedStream.FlushAsync();
if (rotation != 0)
{
resizedStream.Seek(0);
var filters = new List <IFilter>()
{
new RotationFilter(rotation)
};
using (var source = new RandomAccessStreamImageSource(resizedStream))
using (var effect = new FilterEffect(source)
{
Filters = filters
})
using (var renderer = new JpegRenderer(effect))
{
buffer = await renderer.RenderAsync();
using (var rotatedResizedStream = new InMemoryRandomAccessStream())
{
await rotatedResizedStream.WriteAsync(buffer);
await rotatedResizedStream.FlushAsync();
return(rotatedResizedStream.CloneStream());
}
}
}
else
{
return(resizedStream.CloneStream());
}
}
}
private async Task<IRandomAccessStream> ResizeStreamAsync(IRandomAccessStream stream, Size size, PhotoOrientation orientation)
{
var rotation = 0;
switch (orientation)
{
case PhotoOrientation.Rotate180:
{
rotation = -180;
};
break;
case PhotoOrientation.Rotate270:
{
rotation = -270;
};
break;
case PhotoOrientation.Rotate90:
{
rotation = -90;
};
break;
}
using (var resizedStream = new InMemoryRandomAccessStream())
{
var buffer = new byte[stream.Size].AsBuffer();
stream.Seek(0);
await stream.ReadAsync(buffer, buffer.Length, InputStreamOptions.None);
var resizeConfiguration = new AutoResizeConfiguration(
(uint)(size.Width * size.Height * 4 * 2), size,
new Size(0, 0), AutoResizeMode.Automatic, 0.7, ColorSpace.Yuv420);
buffer = await JpegTools.AutoResizeAsync(buffer, resizeConfiguration);
await resizedStream.WriteAsync(buffer);
await resizedStream.FlushAsync();
if (rotation != 0)
{
resizedStream.Seek(0);
var filters = new List<IFilter>() { new RotationFilter(rotation) };
using (var source = new RandomAccessStreamImageSource(resizedStream))
using (var effect = new FilterEffect(source) { Filters = filters })
using (var renderer = new JpegRenderer(effect))
{
buffer = await renderer.RenderAsync();
using (var rotatedResizedStream = new InMemoryRandomAccessStream())
{
await rotatedResizedStream.WriteAsync(buffer);
await rotatedResizedStream.FlushAsync();
return rotatedResizedStream.CloneStream();
}
}
}
else
{
return resizedStream.CloneStream();
}
}
}
