public void StartContentEditing(PHContentEditingInput contentEditingInput, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
input = contentEditingInput;
}
void ApplyVideoFilter(CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// Load AVAsset to process from input.
var avAsset = input.AudiovisualAsset;
if (avAsset == null)
{
throw new InvalidProgramException("can't get AV asset to edit");
}
// Set up a video composition to apply the filter.
var composition = AVVideoComposition.CreateVideoComposition(avAsset, request => {
filter.Image = request.SourceImage;
var filtered = filter.OutputImage;
request.Finish(filtered, null);
});
// Export the video composition to the output URL.
// TODO: https://bugzilla.xamarin.com/show_bug.cgi?id=44443
var export = new AVAssetExportSession(avAsset, AVAssetExportSession.PresetHighestQuality)
{
OutputFileType = AVFileType.QuickTimeMovie,
OutputUrl = output.RenderedContentUrl,
VideoComposition = composition
};
export.ExportAsynchronously(completion);
}
public void StartContentEditing(PHContentEditingInput contentEditingInput, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
input = contentEditingInput;
}
public void Linker()
{
using (var cei = new PHContentEditingInput())
using (var lpec = new PHLivePhotoEditingContext(cei)) {
// not much but it means the linker cannot remove it
Assert.Null(lpec.FrameProcessor2, "FrameProcessor2");
}
}
void TryDisposeContentInput()
{
if (contentEditingInput == null)
{
return;
}
contentEditingInput.Dispose();
contentEditingInput = null;
}
static string FetchAdjustmentFilterName(PHContentEditingInput contentEditingInput)
{
string filterName = null;
try {
PHAdjustmentData adjustmentData = contentEditingInput.AdjustmentData;
if (adjustmentData != null)
{
filterName = (NSString)NSKeyedUnarchiver.UnarchiveObject(adjustmentData.Data);
}
} catch (Exception exception) {
Console.WriteLine("Exception decoding adjustment data: {0}", exception);
}
return(filterName);
}
public void StartContentEditing(PHContentEditingInput input, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
contentEditingInput = input;
// Load input image
switch (contentEditingInput.MediaType)
{
case PHAssetMediaType.Image:
inputImage = contentEditingInput.DisplaySizeImage;
break;
case PHAssetMediaType.Video:
inputImage = ImageFor(contentEditingInput.AvAsset, 0);
break;
default:
break;
}
// Load adjustment data, if any
try {
PHAdjustmentData adjustmentData = contentEditingInput.AdjustmentData;
if (adjustmentData != null)
{
selectedFilterName = (string)(NSString)NSKeyedUnarchiver.UnarchiveObject(adjustmentData.Data);
}
} catch (Exception exception) {
Console.WriteLine("Exception decoding adjustment data: {0}", exception);
}
if (string.IsNullOrWhiteSpace(selectedFilterName))
{
selectedFilterName = "CISepiaTone";
}
initialFilterName = selectedFilterName;
// Update filter and background image
UpdateFilter();
UpdateFilterPreview();
BackgroundImageView.Image = placeholderImage;
}
void ApplyPhotoFilter(CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// Load the full size image.
var inputImage = new CIImage(input.FullSizeImageUrl);
// Apply the filter.
filter.Image = inputImage.CreateWithOrientation(input.FullSizeImageOrientation);
var outputImage = filter.OutputImage;
// Write the edited image as a JPEG.
// TODO: https://bugzilla.xamarin.com/show_bug.cgi?id=44503
NSError error;
if (!ciContext.WriteJpegRepresentation(outputImage, output.RenderedContentUrl, inputImage.ColorSpace(), new NSDictionary(), out error))
{
throw new InvalidProgramException($"can't apply filter to image: {error.LocalizedDescription}");
}
completion();
}
public unsafe void FrameProcessingBlock2()
{
using (var cei = new PHContentEditingInput())
using (var lpec = new PHLivePhotoEditingContext(cei)) {
// not much but it means the linker cannot remove it
Assert.Null(lpec.FrameProcessor2, "FrameProcessor2");
}
var t = typeof(NSObject).Assembly.GetType("ObjCRuntime.Trampolines/SDPHLivePhotoFrameProcessingBlock2");
Assert.NotNull(t, "SDPHLivePhotoFrameProcessingBlock2");
var m = t.GetMethod("Invoke", BindingFlags.Static | BindingFlags.NonPublic);
Assert.NotNull(m, "Invoke");
var d = m.CreateDelegate(typeof(DPHLivePhotoFrameProcessingBlock2));
Action userDelegate = new Action(() => Console.WriteLine("Hello world!"));
BlockLiteral bl = new BlockLiteral();
bl.SetupBlock(d, managed);
try {
var block = &bl;
var b = (IntPtr)block;
// simulate a call that does not produce an error
var args = new object [] { b, IntPtr.Zero, IntPtr.Zero };
error_faker = null;
Assert.That(m.Invoke(null, args), Is.EqualTo(IntPtr.Zero), "1");
// simulate a call that does produce an error
error_faker = new NSError((NSString)"domain", 42);
Assert.That(m.Invoke(null, args), Is.EqualTo(IntPtr.Zero), "2");
Assert.That(args [2], Is.EqualTo(error_faker.Handle), "error");
}
finally {
bl.CleanupBlock();
}
}
void ApplyLivePhotoFilter(CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// This app filters assets only for output. In an app that previews
// filters while editing, create a livePhotoContext early and reuse it
// to render both for previewing and for final output.
var livePhotoContext = new PHLivePhotoEditingContext(input);
livePhotoContext.FrameProcessor = (frame, _) => {
filter.Image = frame.Image;
return(filter.OutputImage);
};
livePhotoContext.SaveLivePhoto(output, null, (success, error) => {
if (success)
{
completion();
}
else
{
Console.WriteLine("can't output live photo");
}
});
}
public void StartContentEditing(PHContentEditingInput input, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
contentEditingInput = input;
// Load input image
switch (contentEditingInput.MediaType)
{
case PHAssetMediaType.Image:
inputImage = contentEditingInput.DisplaySizeImage;
break;
case PHAssetMediaType.Video:
inputImage = ImageFor(contentEditingInput.AvAsset, 0);
break;
default:
break;
}
// Load adjustment data, if any
selectedFilterName = FetchAdjustmentFilterName(contentEditingInput);
if (string.IsNullOrWhiteSpace(selectedFilterName))
{
selectedFilterName = "CISepiaTone";
}
initialFilterName = selectedFilterName;
// Update filter and background image
UpdateFilter();
UpdateFilterPreview();
BackgroundImageView.Image = placeholderImage;
}
public void StartContentEditing(PHContentEditingInput contentEditingInput, UIImage placeholderImage)
{
input = contentEditingInput;
}
public void StartContentEditing(PHContentEditingInput contentEditingInput, UIImage placeholderImage)
{
input = contentEditingInput;
}
void TryDisposeContentInput()
{
if (contentEditingInput == null)
return;
contentEditingInput.Dispose ();
contentEditingInput = null;
}
static string FetchAdjustmentFilterName(PHContentEditingInput contentEditingInput)
{
string filterName = null;
try {
PHAdjustmentData adjustmentData = contentEditingInput.AdjustmentData;
if (adjustmentData != null)
filterName = (NSString)NSKeyedUnarchiver.UnarchiveObject (adjustmentData.Data);
} catch (Exception exception) {
Console.WriteLine ("Exception decoding adjustment data: {0}", exception);
}
return filterName;
}
public void StartContentEditing(PHContentEditingInput input, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
contentEditingInput = input;
// Load input image
switch (contentEditingInput.MediaType) {
case PHAssetMediaType.Image:
inputImage = contentEditingInput.DisplaySizeImage;
break;
case PHAssetMediaType.Video:
inputImage = ImageFor (contentEditingInput.AvAsset, 0);
break;
default:
break;
}
// Load adjustment data, if any
selectedFilterName = FetchAdjustmentFilterName (contentEditingInput);
if (string.IsNullOrWhiteSpace (selectedFilterName))
selectedFilterName = "CISepiaTone";
initialFilterName = selectedFilterName;
// Update filter and background image
UpdateFilter ();
UpdateFilterPreview ();
BackgroundImageView.Image = placeholderImage;
}
public void StartContentEditing (PHContentEditingInput input, UIImage placeholderImage)
{
// Present content for editing and keep the contentEditingInput for use when closing the edit session.
// If you returned true from CanHandleAdjustmentData(), contentEditingInput has the original image and adjustment data.
// If you returned false, the contentEditingInput has past edits "baked in".
contentEditingInput = input;
// Load input image
switch (contentEditingInput.MediaType) {
case PHAssetMediaType.Image:
inputImage = contentEditingInput.DisplaySizeImage;
break;
case PHAssetMediaType.Video:
inputImage = ImageFor (contentEditingInput.AvAsset, 0);
break;
default:
break;
}
// Load adjustment data, if any
try {
PHAdjustmentData adjustmentData = contentEditingInput.AdjustmentData;
if (adjustmentData != null)
selectedFilterName = (string)(NSString)NSKeyedUnarchiver.UnarchiveObject (adjustmentData.Data);
} catch (Exception exception) {
Console.WriteLine ("Exception decoding adjustment data: {0}", exception);
}
if (string.IsNullOrWhiteSpace (selectedFilterName))
selectedFilterName = "CISepiaTone";
initialFilterName = selectedFilterName;
// Update filter and background image
UpdateFilter ();
UpdateFilterPreview ();
BackgroundImageView.Image = placeholderImage;
}
void ApplyPhotoFilter (CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// Load the full size image.
var inputImage = new CIImage (input.FullSizeImageUrl);
// Apply the filter.
filter.Image = inputImage.CreateWithOrientation (input.FullSizeImageOrientation);
var outputImage = filter.OutputImage;
// Write the edited image as a JPEG.
// TODO: https://bugzilla.xamarin.com/show_bug.cgi?id=44503
NSError error;
if (!ciContext.WriteJpegRepresentation (outputImage, output.RenderedContentUrl, inputImage.ColorSpace (), new NSDictionary(), out error))
throw new InvalidProgramException ($"can't apply filter to image: {error.LocalizedDescription}");
completion ();
}
void ApplyLivePhotoFilter (CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// This app filters assets only for output. In an app that previews
// filters while editing, create a livePhotoContext early and reuse it
// to render both for previewing and for final output.
var livePhotoContext = new PHLivePhotoEditingContext (input);
livePhotoContext.FrameProcessor = (frame, _) => {
filter.Image = frame.Image;
return filter.OutputImage;
};
livePhotoContext.SaveLivePhoto (output, null, (success, error) => {
if (success)
completion ();
else
Console.WriteLine ("can't output live photo");
});
}
void ApplyVideoFilter (CIFilter filter, PHContentEditingInput input, PHContentEditingOutput output, Action completion)
{
// Load AVAsset to process from input.
var avAsset = input.AudiovisualAsset;
if (avAsset == null)
throw new InvalidProgramException ("can't get AV asset to edit");
// Set up a video composition to apply the filter.
var composition = AVVideoComposition.CreateVideoComposition (avAsset, request => {
filter.Image = request.SourceImage;
var filtered = filter.OutputImage;
request.Finish (filtered, null);
});
// Export the video composition to the output URL.
// TODO: https://bugzilla.xamarin.com/show_bug.cgi?id=44443
var export = new AVAssetExportSession (avAsset, AVAssetExportSession.PresetHighestQuality) {
OutputFileType = AVFileType.QuickTimeMovie,
OutputUrl = output.RenderedContentUrl,
VideoComposition = composition
};
export.ExportAsynchronously (completion);
}
