Does anybody know if MAUI has a utility or package for handling HEIF image format?

dg2k 1,386

High Efficiency Image File Format (HEIF) is a new container format for storing digital images and increasingly replacing the JPEG format. As JPEG is still in use, there is usually the need to convert from HEIF to JPEG format.
I looked around for utilities to convert from HEIF to JPEG but found none for MAUI programming. The NuGet packages I found use custom external DLL files which I find not suited to MAUI programming.

Any tips as to how to handle HEIF to JPEG under MAUI programming?

Castorix31 81,636 Reputation points

2023-05-11T13:49:40.8+00:00

I don't use MAUI, but in WinUI 3, Winforms, Win32 I can display .heif files on my PC (Windows 10 22H2) with IThumbnailProvider::GetThumbnail (or also StorageFile.GetThumbnailAsync)

But I don't know if this can work in MAUI

(theorically yes from MSDN :

"Windows apps built using .NET MAUI use Windows UI 3 (WinUI 3) library to create native apps that target the Windows desktop")
dg2k 1,386 Reputation points

2023-05-11T13:54:14.76+00:00

I know Windows supports HEIF image at the operating system, but my issue is for cross-platform programming under MAUI. Thank you for your time though.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,221 Reputation points Microsoft Vendor

2023-05-23T09:11:17.52+00:00

What platform(s) do you want to run it on? MAUI provides deep access to every aspect of each native platform, and you can try converting from HEIF to JPEG on each platform.
dg2k 1,386 Reputation points

2023-05-23T09:19:07.9366667+00:00

Thank you @Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.)

I want to run on Android and iOS but Android is an immediate need. Would be great for utility on on platforms supported by MAUI.

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,221 Microsoft Vendor

Hello,

For iOS, you can try calling UIImage.AsJPEG Method.


            UIImage image = XXXX ; // if you can get the UIImage, you can convert it. 
//This image also can be loaded from photo album or otherwise. 
//For example, getting the native platform UIImage from a MAUI Image named "MyImage"
//          UIImageView view = MyImage.Handler.PlatformView as UIImageView;
//          UIImage image = view.Image;

            NSData data = image.AsJPEG();

            UIImage imnageNew = UIImage.LoadFromData(data);

For Android, toy could try getting the Bitmap, then calling Bitmap.Compress(Bitmap+CompressFormat, Int32, Stream) Method.

Bitmap image = XXXX
using (MemoryStream ms = new MemoryStream())
			{
				image.Compress (Bitmap.CompressFormat.Jpeg, 100, ms);
				return ms.ToArray ();
			}

Best Regards,

Wenyan Zhang

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Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,221 Reputation points Microsoft Vendor

2023-06-02T03:04:47.6866667+00:00

May I know whether your issue has been solved or not? If you're still having problems, please explain in detail what is still going wrong and what you need help with.
dg2k 1,386 Reputation points

2023-06-02T14:38:27.1633333+00:00

Thank you @Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.)

Sorry I couldn't respond in time.

I really cannot follow how the above answers my question. Could you please elaborate?

No problem changing Bitmap to Jpeg, but how do you get to Bitmap from HEIC or HEIF file?

I am a bit surprised that as modern MAUI is, I see no package or utilities that we can use a modern image format HEIC within MAUI image handling.
Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 26,221 Reputation points Microsoft Vendor

2023-06-08T09:31:09.8+00:00

Yes, there are no such package. You could try to create a feature request at https://github.com/dotnet/maui. For "get Bitmap from HEIC or HEIF file" this question, it's recommended that you try to open a support ticket for this. Please contact our paid phone support at MS Support. You will get 1:1 support on that.