Is there any equivalent method of System.Drawing.Bitmap(int width, int height, int stride, System.Drawing.Imaging.PixelFormat format, System.IntPtr scan0)

[mail2mhossain]

Is there any equivalent method of System.Drawing.Bitmap(int width, int height, int stride, System.Drawing.Imaging.PixelFormat format, System.IntPtr scan0) in IronSoftware.Drawing.AnyBitmap

[michael-ironsoftware]

Hello mail2mhossain and thank you for the feature request.

Please try our latest version: v2022.12.11227 which contains the Scan0 function that you were inquiring about.

seealso: Scan0 property

[mail2mhossain]

Thank you very much for your great supports.

I am trying to convert from SIPSorceryMedia.Abstractions.RawImage to AnyBitmap.

It can be converted to System.Drawing.Bitmap as follows: System.Drawing.Bitmap bmpImage = new System.Drawing.Bitmap(rawImage.Width, rawImage.Height, rawImage.Stride, System.Drawing.Imaging.PixelFormat.Format24bppRgb, rawImage.Sample);

Now I want to convert it to directly to AnyBitmap

SIPSorceryMedia.Abstractions.RawImage -> https://github.com/sipsorcery-org/SIPSorceryMedia.Abstractions/blob/master/src/MediaEndPoints.cs It has following properties:

1. int Width
2. int Height
3. int Stride
4. IntPtr Sample
5. VideoPixelFormatsEnum PixelFormat -> https://github.com/sipsorcery-org/SIPSorceryMedia.Abstractions/blob/master/src/MediaEndPoints.cs

public enum VideoPixelFormatsEnum { Rgb, Bgr, Bgra, I420, NV12 }

[mee-ironsoftware]

Hello @mail2mhossain,

You can convert IntPtr into byte array.

byte[] managedArray = new byte[rawImage.Width * rawImage.Height * rawImage.Stride];
Marshal.Copy(rawImage.Sample, managedArray, 0, managedArray.Length);

// Then created AnyBitmap with byte array
AnyBitmap bmpImage = AnyBitmap.FromBytes(managedArray);

Hope this help.

[mail2mhossain]

Not working. I think bcoz of VideoPixelFormatsEnum.Rgb

[mail2mhossain]

RESPONSE FROM SIPSORCERY:

SIPSorceryMedia.Abstractions.RawImage contains all necessary info about an image in AV_PIX_FMT_BGR24 format (format in FFmpeg context)

So 8 bits for B, 8 bits for G, 8 bits for R (=> 24 bits for one pixel), it's size (width and height) and it's stride

As an example, This AV_PIX_FMT_BGR24 format is the same as this one PixelFormat.Format24bppRgb in System.Drawing.Imaging context.

According the library, you must use an equivalent:

use 8 bits for each colors no alpha necessary to specify width, height and stride

About stride, read this: https://learn.microsoft.com/en-us/dotnet/api/system.drawing.bitmap.-ctor?view=dotnet-plat-ext-7.0#system-drawing-bitmap-ctor(system-int32-system-int32-system-int32-system-drawing-imaging-pixelformat-system-intptr)

[mee-ironsoftware]

If the image is RGB.

Please try

byte[] managedArray = new byte[rawImage.Width * rawImage.Height * 3];
Marshal.Copy(rawImage.Sample, managedArray, 0, managedArray.Length);

// Then created AnyBitmap with byte array
AnyBitmap bmpImage = AnyBitmap.FromBytes(managedArray);

Hope this help.

[mail2mhossain]

Not working.

Would you please go through RESPONSE FROM SIPSORCERY -> https://github.com/iron-software/IronSoftware.System.Drawing/issues/22#issuecomment-1367120414

[mee-ironsoftware]

The length of byte array should be [heigh * stride]. So please try,

byte[] managedArray = new byte[rawImage.Height * rawImage.Stride];
Marshal.Copy(rawImage.Sample, managedArray, 0, managedArray.Length);

// Then created AnyBitmap with byte array
AnyBitmap bmpImage = AnyBitmap.FromBytes(managedArray);

This problem is just converting an IntPtr of byte array into byte array. If it's not working, you may need to provide more info of your problem. Please not just tell us that it's not working without any information cause it's hard to guess.

[mail2mhossain]

Not getting any image.

When I am using: AnyBitmap bmpImage = new System.Drawing.Bitmap(rawImage.Width, rawImage.Height, rawImage.Stride, System.Drawing.Imaging.PixelFormat.Format24bppRgb, rawImage.Sample); getting an image.

BUT when i am using: byte[] managedArray = new byte[rawImage.Height * rawImage.Stride]; Marshal.Copy(rawImage.Sample, managedArray, 0, managedArray.Length); AnyBitmap bmpImage = AnyBitmap.FromBytes(managedArray); did not get any image.

I have uploaded a test project. In "videoSource_OnVideoSourceRawSampleFaster" method of class "VideoCaptureDevice" has image conversion code.

github link: https://github.com/mail2mhossain/RawImageToAnyBitmap.git PLEASE PUT "ffmpeg" folder under debug folder.