/**
* Call from the GLThread to save a picture of the current frame.
*/
public void SavePicture(IGL10 mGL)
{
var pixelData = new int[_mWidth * _mHeight];
// Read the pixels from the current GL frame.
IntBuffer buf = IntBuffer.Wrap(pixelData);
IntBuffer ibt = IntBuffer.Allocate(_mWidth * _mHeight);
buf.Position(0);
mGL.GlReadPixels(0, 0, _mWidth, _mHeight, GLES20.GlRgba, GLES20.GlUnsignedByte, buf);
// Create a file in the Pictures/HelloAR album.
var file = new Java.IO.File($"{Environment.GetExternalStoragePublicDirectory(Environment.DirectoryPictures)}/{TAG}", "Img" + DateTime.Now + ".png");
// Make sure the directory exists
if (!file.ParentFile.Exists())
{
file.ParentFile.Mkdirs();
}
// Convert the pixel data from RGBA to what Android wants, ARGB.
var bitmapData = new int[pixelData.Length];
for (var i = 0; i < _mHeight; i++)
{
for (var j = 0; j < _mWidth; j++)
{
long p = pixelData[i * _mWidth + j];
long b = (p & 0x00ff0000) >> 16;
long r = (p & 0x000000ff) << 16;
long ga = p & 0xff00ff00;
bitmapData[(_mHeight - i - 1) * _mWidth + j] = (int)(ga | r | b);
}
}
// Convert upside down mirror-reversed image to right-side up normal
// image.
for (var i = 0; i < _mHeight; i++)
{
for (var j = 0; j < _mWidth; j++)
{
ibt.Put((_mHeight - i - 1) * _mWidth + j, buf.Get(i * _mWidth + j));
}
}
// Create a bitmap.
Bitmap bmp = Bitmap.CreateBitmap(bitmapData, _mWidth, _mHeight, Bitmap.Config.Argb8888);
bmp.CopyPixelsFromBuffer(ibt);
// Write it to disk.
var fs = new FileStream(file.Path, FileMode.OpenOrCreate);
bmp.Compress(Bitmap.CompressFormat.Png, 100, fs);
fs.Flush();
fs.Close();
}
/// <summary>
/// Save filter bitmap from {@link ImageFilterView}
/// </summary>
/// <param name="glSurfaceView">surface view on which is image is drawn</param>
/// <param name="gl">open gl source to read pixels from {@link GLSurfaceView}</param>
/// <returns>save bitmap</returns>
/// <OutOfMemoryError>error when system is out of memory to load and save bitmap</OutOfMemoryError>
public static Bitmap CreateBitmapFromGlSurface(GLSurfaceView glSurfaceView, IGL10 gl)
{
try
{
//My Code Work <3
var w = glSurfaceView.Width;
var h = glSurfaceView.Height;
var ib = IntBuffer.Allocate(w * h);
IntBuffer ibt = IntBuffer.Allocate(w * h);
try
{
gl.GlReadPixels(0, 0, w, h, GL10.GlRgba, GL10.GlUnsignedByte, ib);
//Parallel.For(0, h, i =>
//{
// for (var j = 0; j < w; j++)
// ibt.Put((h - i - 1) * w + j, ib.Get(i * w + j));
//});
for (var i = 0; i < h; i++)
{
for (var j = 0; j < w; j++)
{
ibt.Put((h - i - 1) * w + j, ib.Get(i * w + j));
}
}
var mBitmap = Bitmap.CreateBitmap(w, h, Bitmap.Config.Argb8888);
mBitmap.CopyPixelsFromBuffer(ibt);
return(mBitmap);
}
catch (GLException e)
{
Console.WriteLine(e);
return(null);
}
catch (OutOfMemoryError e)
{
Console.WriteLine(e);
return(null);
}
}
catch (Exception e)
{
Console.WriteLine(e);
return(null);
}
}