Unable to find PixelFormat Enum for Xamarin Android











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I have the below code where i am creating a ImageReader instance in xamarin android, how to change Image Format from ImageFormatType.Rgb565 to PixelFormat.RGBA_8888



i am unable to find the Library or a Enum class for it.



mImageReader = ImageReader.NewInstance(windowWidth, windowHeight, ImageFormatType.Rgb565, 2)









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    up vote
    3
    down vote

    favorite












    I have the below code where i am creating a ImageReader instance in xamarin android, how to change Image Format from ImageFormatType.Rgb565 to PixelFormat.RGBA_8888



    i am unable to find the Library or a Enum class for it.



    mImageReader = ImageReader.NewInstance(windowWidth, windowHeight, ImageFormatType.Rgb565, 2)









    share|improve this question


























      up vote
      3
      down vote

      favorite









      up vote
      3
      down vote

      favorite











      I have the below code where i am creating a ImageReader instance in xamarin android, how to change Image Format from ImageFormatType.Rgb565 to PixelFormat.RGBA_8888



      i am unable to find the Library or a Enum class for it.



      mImageReader = ImageReader.NewInstance(windowWidth, windowHeight, ImageFormatType.Rgb565, 2)









      share|improve this question















      I have the below code where i am creating a ImageReader instance in xamarin android, how to change Image Format from ImageFormatType.Rgb565 to PixelFormat.RGBA_8888



      i am unable to find the Library or a Enum class for it.



      mImageReader = ImageReader.NewInstance(windowWidth, windowHeight, ImageFormatType.Rgb565, 2)






      android xamarin bitmap xamarin.android image-reader






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 12 at 6:40

























      asked Nov 11 at 21:54









      VINNUSAURUS

      1941414




      1941414
























          2 Answers
          2






          active

          oldest

          votes

















          up vote
          0
          down vote



          accepted










          You need to pass an int value of 3 (Android.Graphics.Format.Rgb888) to ImageReader.NewInstance, but currently you can not.



          That is a bug/issue in Xamarin.Android auto-generation API process as they do not create a overload that accepts an Android.Graphics.Format enum, or just a plain int as the Java API does.



          You can do this the same way you would do it in Java via Xamarin.Android's binding to Android.Runtime.JNIEnv or Java.Lang.Reflect



          Example using JNI:



          Note: Using JNI requires that the assembly be allowed to use "unsafe" code ( on the plus side, JNI is faster execution than using reflection...)



          public static class ImageReaderEx
          {
          public unsafe static ImageReader NewInstance(int width, int height, Android.Graphics.Format format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue((int)format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }

          public unsafe static ImageReader NewInstance(int width, int height, int format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue(format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }
          }


          Usage:



          var imageReader = ImageReaderEx.NewInstance(1, 1, 3, 1);


          or



          var ImageReader = ImageReaderEx.NewInstance(1, 1, Android.Graphics.Format.Rgb888, 1);





          share|improve this answer























          • which jar file I should use for binding? and where to find them?
            – VINNUSAURUS
            Nov 12 at 5:46










          • No jar file needed.
            – Cheesebaron
            Nov 12 at 6:48










          • @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
            – SushiHangover
            Nov 12 at 7:35












          • can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
            – VINNUSAURUS
            Nov 12 at 7:39












          • @VINNUSAURUS I added an example
            – SushiHangover
            Nov 12 at 8:19


















          up vote
          0
          down vote













          In Xamarin, its Format.Rgba8888 (lower case). the doc is here






          share|improve this answer





















          • That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
            – SushiHangover
            Nov 11 at 22:30











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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          0
          down vote



          accepted










          You need to pass an int value of 3 (Android.Graphics.Format.Rgb888) to ImageReader.NewInstance, but currently you can not.



          That is a bug/issue in Xamarin.Android auto-generation API process as they do not create a overload that accepts an Android.Graphics.Format enum, or just a plain int as the Java API does.



          You can do this the same way you would do it in Java via Xamarin.Android's binding to Android.Runtime.JNIEnv or Java.Lang.Reflect



          Example using JNI:



          Note: Using JNI requires that the assembly be allowed to use "unsafe" code ( on the plus side, JNI is faster execution than using reflection...)



          public static class ImageReaderEx
          {
          public unsafe static ImageReader NewInstance(int width, int height, Android.Graphics.Format format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue((int)format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }

          public unsafe static ImageReader NewInstance(int width, int height, int format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue(format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }
          }


          Usage:



          var imageReader = ImageReaderEx.NewInstance(1, 1, 3, 1);


          or



          var ImageReader = ImageReaderEx.NewInstance(1, 1, Android.Graphics.Format.Rgb888, 1);





          share|improve this answer























          • which jar file I should use for binding? and where to find them?
            – VINNUSAURUS
            Nov 12 at 5:46










          • No jar file needed.
            – Cheesebaron
            Nov 12 at 6:48










          • @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
            – SushiHangover
            Nov 12 at 7:35












          • can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
            – VINNUSAURUS
            Nov 12 at 7:39












          • @VINNUSAURUS I added an example
            – SushiHangover
            Nov 12 at 8:19















          up vote
          0
          down vote



          accepted










          You need to pass an int value of 3 (Android.Graphics.Format.Rgb888) to ImageReader.NewInstance, but currently you can not.



          That is a bug/issue in Xamarin.Android auto-generation API process as they do not create a overload that accepts an Android.Graphics.Format enum, or just a plain int as the Java API does.



          You can do this the same way you would do it in Java via Xamarin.Android's binding to Android.Runtime.JNIEnv or Java.Lang.Reflect



          Example using JNI:



          Note: Using JNI requires that the assembly be allowed to use "unsafe" code ( on the plus side, JNI is faster execution than using reflection...)



          public static class ImageReaderEx
          {
          public unsafe static ImageReader NewInstance(int width, int height, Android.Graphics.Format format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue((int)format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }

          public unsafe static ImageReader NewInstance(int width, int height, int format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue(format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }
          }


          Usage:



          var imageReader = ImageReaderEx.NewInstance(1, 1, 3, 1);


          or



          var ImageReader = ImageReaderEx.NewInstance(1, 1, Android.Graphics.Format.Rgb888, 1);





          share|improve this answer























          • which jar file I should use for binding? and where to find them?
            – VINNUSAURUS
            Nov 12 at 5:46










          • No jar file needed.
            – Cheesebaron
            Nov 12 at 6:48










          • @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
            – SushiHangover
            Nov 12 at 7:35












          • can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
            – VINNUSAURUS
            Nov 12 at 7:39












          • @VINNUSAURUS I added an example
            – SushiHangover
            Nov 12 at 8:19













          up vote
          0
          down vote



          accepted







          up vote
          0
          down vote



          accepted






          You need to pass an int value of 3 (Android.Graphics.Format.Rgb888) to ImageReader.NewInstance, but currently you can not.



          That is a bug/issue in Xamarin.Android auto-generation API process as they do not create a overload that accepts an Android.Graphics.Format enum, or just a plain int as the Java API does.



          You can do this the same way you would do it in Java via Xamarin.Android's binding to Android.Runtime.JNIEnv or Java.Lang.Reflect



          Example using JNI:



          Note: Using JNI requires that the assembly be allowed to use "unsafe" code ( on the plus side, JNI is faster execution than using reflection...)



          public static class ImageReaderEx
          {
          public unsafe static ImageReader NewInstance(int width, int height, Android.Graphics.Format format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue((int)format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }

          public unsafe static ImageReader NewInstance(int width, int height, int format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue(format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }
          }


          Usage:



          var imageReader = ImageReaderEx.NewInstance(1, 1, 3, 1);


          or



          var ImageReader = ImageReaderEx.NewInstance(1, 1, Android.Graphics.Format.Rgb888, 1);





          share|improve this answer














          You need to pass an int value of 3 (Android.Graphics.Format.Rgb888) to ImageReader.NewInstance, but currently you can not.



          That is a bug/issue in Xamarin.Android auto-generation API process as they do not create a overload that accepts an Android.Graphics.Format enum, or just a plain int as the Java API does.



          You can do this the same way you would do it in Java via Xamarin.Android's binding to Android.Runtime.JNIEnv or Java.Lang.Reflect



          Example using JNI:



          Note: Using JNI requires that the assembly be allowed to use "unsafe" code ( on the plus side, JNI is faster execution than using reflection...)



          public static class ImageReaderEx
          {
          public unsafe static ImageReader NewInstance(int width, int height, Android.Graphics.Format format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue((int)format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }

          public unsafe static ImageReader NewInstance(int width, int height, int format, int maxImages)
          {
          JniArgumentValue* ptr = stackalloc JniArgumentValue[4];
          *ptr = new JniArgumentValue(width);
          ptr[1] = new JniArgumentValue(height);
          ptr[2] = new JniArgumentValue(format);
          ptr[3] = new JniArgumentValue(maxImages);
          JniPeerMembers _members = new XAPeerMembers("android/media/ImageReader", typeof(ImageReader));
          return Java.Lang.Object.GetObject<ImageReader>(_members.StaticMethods.InvokeObjectMethod("newInstance.(IIII)Landroid/media/ImageReader;", ptr).Handle, JniHandleOwnership.TransferLocalRef);
          }
          }


          Usage:



          var imageReader = ImageReaderEx.NewInstance(1, 1, 3, 1);


          or



          var ImageReader = ImageReaderEx.NewInstance(1, 1, Android.Graphics.Format.Rgb888, 1);






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 12 at 8:15

























          answered Nov 11 at 22:29









          SushiHangover

          50.3k53886




          50.3k53886












          • which jar file I should use for binding? and where to find them?
            – VINNUSAURUS
            Nov 12 at 5:46










          • No jar file needed.
            – Cheesebaron
            Nov 12 at 6:48










          • @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
            – SushiHangover
            Nov 12 at 7:35












          • can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
            – VINNUSAURUS
            Nov 12 at 7:39












          • @VINNUSAURUS I added an example
            – SushiHangover
            Nov 12 at 8:19


















          • which jar file I should use for binding? and where to find them?
            – VINNUSAURUS
            Nov 12 at 5:46










          • No jar file needed.
            – Cheesebaron
            Nov 12 at 6:48










          • @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
            – SushiHangover
            Nov 12 at 7:35












          • can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
            – VINNUSAURUS
            Nov 12 at 7:39












          • @VINNUSAURUS I added an example
            – SushiHangover
            Nov 12 at 8:19
















          which jar file I should use for binding? and where to find them?
          – VINNUSAURUS
          Nov 12 at 5:46




          which jar file I should use for binding? and where to find them?
          – VINNUSAURUS
          Nov 12 at 5:46












          No jar file needed.
          – Cheesebaron
          Nov 12 at 6:48




          No jar file needed.
          – Cheesebaron
          Nov 12 at 6:48












          @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
          – SushiHangover
          Nov 12 at 7:35






          @VINNUSAURUS No jar file, just via Java reflection or JNI, if you do not know how, I can help you with code later (not at my PC)
          – SushiHangover
          Nov 12 at 7:35














          can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
          – VINNUSAURUS
          Nov 12 at 7:39






          can u show me how, because I cannot understand it, I am new to this, i will wait for the code.
          – VINNUSAURUS
          Nov 12 at 7:39














          @VINNUSAURUS I added an example
          – SushiHangover
          Nov 12 at 8:19




          @VINNUSAURUS I added an example
          – SushiHangover
          Nov 12 at 8:19












          up vote
          0
          down vote













          In Xamarin, its Format.Rgba8888 (lower case). the doc is here






          share|improve this answer





















          • That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
            – SushiHangover
            Nov 11 at 22:30















          up vote
          0
          down vote













          In Xamarin, its Format.Rgba8888 (lower case). the doc is here






          share|improve this answer





















          • That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
            – SushiHangover
            Nov 11 at 22:30













          up vote
          0
          down vote










          up vote
          0
          down vote









          In Xamarin, its Format.Rgba8888 (lower case). the doc is here






          share|improve this answer












          In Xamarin, its Format.Rgba8888 (lower case). the doc is here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 11 at 22:21









          navylover

          3,24021118




          3,24021118












          • That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
            – SushiHangover
            Nov 11 at 22:30


















          • That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
            – SushiHangover
            Nov 11 at 22:30
















          That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
          – SushiHangover
          Nov 11 at 22:30




          That will not work as ImageReader.NewInstance does not accept a Format enum as a parameter, it is an issue in the auto-generated API bindings...
          – SushiHangover
          Nov 11 at 22:30


















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