private UIImage GetImageFromSampleBuffer(CMSampleBuffer sampleBuffer)
{
// Get a pixel buffer from the sample buffer
using (var pixelBuffer = sampleBuffer.GetImageBuffer() as CVPixelBuffer)
{
// Lock the base address
pixelBuffer.Lock(CVPixelBufferLock.None);
// Prepare to decode buffer
const CGBitmapFlags flags = CGBitmapFlags.PremultipliedFirst | CGBitmapFlags.ByteOrder32Little;
// Decode buffer - Create a new colorspace
using (var cs = CGColorSpace.CreateDeviceRGB())
{
// Create new context from buffer
using (var context = new CGBitmapContext(pixelBuffer.BaseAddress,
pixelBuffer.Width,
pixelBuffer.Height,
8,
pixelBuffer.BytesPerRow,
cs,
(CGImageAlphaInfo)flags))
{
// Get the image from the context
using (var cgImage = context.ToImage())
{
// Unlock and return image
pixelBuffer.Unlock(CVPixelBufferLock.None);
return(UIImage.FromImage(cgImage));
}
}
}
}
}
public CGImage(int width, int height, int bitsPerComponent, int bitsPerPixel, int bytesPerRow,
CGColorSpace colorSpace, CGBitmapFlags bitmapFlags, CGDataProvider provider,
nfloat [] decode, bool shouldInterpolate, CGColorRenderingIntent intent)
{
if (width < 0)
{
throw new ArgumentException("width");
}
if (height < 0)
{
throw new ArgumentException("height");
}
if (bitsPerPixel < 0)
{
throw new ArgumentException("bitsPerPixel");
}
if (bitsPerComponent < 0)
{
throw new ArgumentException("bitsPerComponent");
}
if (bytesPerRow < 0)
{
throw new ArgumentException("bytesPerRow");
}
handle = CGImageCreate(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow,
colorSpace == null ? IntPtr.Zero : colorSpace.Handle, bitmapFlags, provider == null ? IntPtr.Zero : provider.Handle,
decode,
shouldInterpolate, intent);
}
extern static IntPtr CGImageCreate(IntPtr size_t_width, IntPtr size_t_height, IntPtr size_t_bitsPerComponent,
IntPtr size_t_bitsPerPixel, IntPtr size_t_bytesPerRow,
IntPtr /* CGColorSpaceRef */ space,
CGBitmapFlags bitmapInfo,
IntPtr /* CGDataProviderRef */ provider,
nfloat [] decode,
bool shouldInterpolate,
CGColorRenderingIntent intent);
partial void ScreenButton_down(UIButton sender)
{
if (!isScreen)
{
ScreenshotView.Hidden = false;
ScreenBtn.SetTitle("Hide screen", UIControlState.Normal);
isScreen = true;
int val = 1920 * 1080 * 4 + 8; //ARGB 1920x1080 + 8(iosspecific)
IntPtr b = Marshal.AllocHGlobal(val);
int val1 = -1; //return realsize after getvideoshot
int val2 = -1; //return realsize after getvideoshot
int val3 = 0; //return realsize after getvideoshot
int rc = _mediaPlayer.GetVideoShot(b, ref val, ref val1, ref val2, ref val3);
if (rc == -2)
{
System.Console.WriteLine(String.Format("<binary> rc: {0} , not enough space allocated", rc));
Marshal.FreeHGlobal(b);
return;
}
else if (rc == -1)
{
System.Console.WriteLine(String.Format("<binary> rc: {0} , error", rc));
Marshal.FreeHGlobal(b);
return;
}
CGDataProvider provider = new CGDataProvider(b, val);
int bitsPerComponent = 8;
int bitsPerPixel = 32;
int bytesPerRow = val3;
CGColorSpace colorspaceref = CGColorSpace.CreateDeviceRGB();
CGBitmapFlags bitmapinfo = CGBitmapFlags.ByteOrder32Little | CGBitmapFlags.NoneSkipFirst;
CGColorRenderingIntent renderintent = CGColorRenderingIntent.Default;
CGImage imageref = new CGImage(val1, val2, bitsPerComponent, bitsPerPixel, val3, colorspaceref, bitmapinfo, provider, null, true, renderintent);
UIImage img = new UIImage(imageref);
ScrenShotImageView.Image = img;
Marshal.FreeHGlobal(b);
}
else
{
ScreenBtn.SetTitle("Screen", UIControlState.Normal);
ScreenshotView.Hidden = true;
isScreen = false;
}
}
public FastBitmap(int width, int height)
{
_width = width;
_height = height;
_colorSpace = CGColorSpace.CreateDeviceRGB();
_bpp = 4;
int bytesPerRow = _width * _bpp;
int bitmapByteCount = bytesPerRow * _height;
const int bitsPerComponent = 8;
CGBitmapFlags flags = CGBitmapFlags.PremultipliedLast | CGBitmapFlags.ByteOrder32Big;
_bitmapData = new byte[bitmapByteCount];
_handle = GCHandle.Alloc(_bitmapData);
_context = new CGBitmapContext(_bitmapData, _width, _height, bitsPerComponent, bytesPerRow, _colorSpace, flags);
}
public CGBitmapContext(byte []?data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace?colorSpace, CGBitmapFlags bitmapInfo)
: base(Create(data, width, height, bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo, out var buffer), true)
{
this.buffer = buffer;
}
static IntPtr Create(byte []?data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace?colorSpace, CGBitmapFlags bitmapInfo, out GCHandle buffer)
{
buffer = default(GCHandle);
if (data != null)
{
buffer = GCHandle.Alloc(data, GCHandleType.Pinned); // This requires a pinned GCHandle, because unsafe code is scoped to the current block, and the address of the byte array will be used after this function returns.
}
return(CGBitmapContextCreate(data, width, height, bitsPerComponent, bytesPerRow, colorSpace.GetHandle(), (uint)bitmapInfo));
}
public CGBitmapContext(IntPtr data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace?colorSpace, CGBitmapFlags bitmapInfo)
: base(CGBitmapContextCreate(data, width, height, bitsPerComponent, bytesPerRow, colorSpace.GetHandle(), (uint)bitmapInfo), true)
{
}
public CGBitmapContext(byte [] data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
{
if (data != null)
{
buffer = GCHandle.Alloc(data, GCHandleType.Pinned); // This requires a pinned GCHandle, because unsafe code is scoped to the current block, and the address of the byte array will be used after this function returns.
}
Handle = CGBitmapContextCreate(data, width, height, bitsPerComponent, bytesPerRow, GetHandle(colorSpace), (uint)bitmapInfo);
}
public static String[] CalculatePValue(UIImage image, ref nfloat totP, ref nfloat avgP)
{
UIImage uiImagePic = image;
CIContext ctx = CIContext.FromOptions(null);
CGImage cgimage = uiImagePic.CGImage;
nfloat powerValueAvg = 0.0f;
nfloat powerValueTot = 0.0f;
nint numPixels = 0;
//compute values
nint width = cgimage.Width;
nint height = cgimage.Height;
nint bpr = cgimage.BytesPerRow;
nint bpp = cgimage.BitsPerPixel;
nint bpc = cgimage.BitsPerComponent;
nint bytes_per_pixel = bpp / bpc;
CGBitmapFlags info = cgimage.BitmapInfo;
CGDataProvider provider = cgimage.DataProvider;
NSData data = provider.CopyData();
IntPtr bytesintp = data.Bytes;
byte[] bytes = new byte[data.Length];
Marshal.Copy(bytesintp, bytes, 0, (int)data.Length);
Console.WriteLine("Pixel Data:");
for (nint row = 0; row < height; row++)
{
for (nint col = 0; col < width; col++)
{
byte[] pixel = new byte[bytes_per_pixel];
for (int i = 0; i < bytes_per_pixel; i++)
{
pixel [i] = bytes [row * bpr + col * bytes_per_pixel + i];
}
//Console.Write("(");
for (nint x = 0; x < bytes_per_pixel; x++)
{
//pixel[0] is r
//pixel[1] is g
//pixel[2] is b
//pixel[3] is alpha
numPixels++;
nfloat curPower = pixel [0] * 0.299f + pixel [1] * 0.587f + pixel [2] * 0.0722f;
powerValueTot += curPower;
powerValueAvg = powerValueTot / numPixels;
// Console.Write(pixel[x]);
// if( x < bytes_per_pixel - 1 )
// Console.Write(",");
}
//Console.Write(")");
//if( col < width - 1 )
// Console.Write(", ");
}
//Console.Write("\n");
}
totP = powerValueTot;
avgP = powerValueAvg;
string outputToName;
outputToName = powerValueAvg.ToString("0.0000");
string outputToName2 = powerValueTot.ToString("0.0000");
string[] strToRet = new string[2];
strToRet [0] = outputToName;
strToRet [1] = outputToName2;
return(strToRet);
}
extern static /* CGImageRef */ IntPtr CGImageCreate(/* size_t */ nint width, /* size_t */ nint height,
/* size_t */ nint bitsPerComponent, /* size_t */ nint bitsPerPixel, /* size_t */ nint bytesPerRow,
/* CGColorSpaceRef */ IntPtr space, CGBitmapFlags bitmapInfo, /* CGDataProviderRef */ IntPtr provider,
/* CGFloat[] */ nfloat [] decode, [MarshalAs(UnmanagedType.I1)] bool shouldInterpolate, CGColorRenderingIntent intent);
public CGBitmapContext(byte [] data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
{
if (data != null)
buffer = GCHandle.Alloc (data, GCHandleType.Pinned);
Handle = CGBitmapContextCreate (data, width, height, bitsPerComponent, bytesPerRow, GetHandle (colorSpace), (uint) bitmapInfo);
}
public CGBitmapContext(IntPtr data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
: base(CGBitmapContextCreate (data, width, height, bitsPerComponent, bytesPerRow, GetHandle (colorSpace), (uint) bitmapInfo), true)
{
}
public void SetOriginalImage(UIImage originalImage, CGRect cropFrame)
{
LoadIndicator.StartAnimating();
InvokeOnMainThread(() =>
{
CGImage imageRef = originalImage.CGImage;
UIImageOrientation imageOrientation = originalImage.Orientation;
if (imageRef == null)
{
return;
}
var bytesPerRow = 0;
var width = imageRef.Width;
var height = imageRef.Height;
var bitsPerComponent = imageRef.BitsPerComponent;
CGColorSpace colorSpace = CGColorSpace.CreateDeviceRGB();
CGBitmapFlags bitmapInfo = imageRef.BitmapInfo;
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Right:
case UIImageOrientation.Left:
width = imageRef.Height;
height = imageRef.Width;
break;
default:
break;
}
CGSize imageSize = new CGSize(width, height);
CGBitmapContext context = new CGBitmapContext(null,
width,
height,
bitsPerComponent,
bytesPerRow,
colorSpace,
bitmapInfo);
colorSpace.Dispose();
if (context == null)
{
imageRef.Dispose();
return;
}
switch (imageOrientation)
{
case UIImageOrientation.RightMirrored:
case UIImageOrientation.Right:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM(-((nfloat)Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.LeftMirrored:
case UIImageOrientation.Left:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)(Math.PI / 2));
context.TranslateCTM(-imageSize.Height / 2, -imageSize.Width / 2);
break;
case UIImageOrientation.Down:
case UIImageOrientation.DownMirrored:
context.TranslateCTM(imageSize.Width / 2, imageSize.Height / 2);
context.RotateCTM((nfloat)Math.PI);
context.TranslateCTM(-imageSize.Width / 2, -imageSize.Height / 2);
break;
default:
break;
}
context.InterpolationQuality = CGInterpolationQuality.High;
context.SetBlendMode(CGBlendMode.Copy);
context.DrawImage(new CGRect(0, 0, imageRef.Width, imageRef.Height), imageRef);
CGImage contextImage = context.ToImage();
context.Dispose();
if (contextImage != null)
{
_originalImage = UIImage.FromImage(contextImage, originalImage.CurrentScale, UIImageOrientation.Up);
contextImage.Dispose();
}
imageRef.Dispose();
BeginInvokeOnMainThread(() =>
{
CGSize convertedImageSize = new CGSize(_originalImage.Size.Width / _cropSizeRatio,
_originalImage.Size.Height / _cropSizeRatio);
ImageView.Alpha = 0;
ImageView.Image = _originalImage;
CGSize sampleImageSize = new CGSize(Math.Max(convertedImageSize.Width, ScrollView.Frame.Size.Width),
Math.Max(convertedImageSize.Height, ScrollView.Frame.Size.Height));
ScrollView.MinimumZoomScale = 1;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = 1;
ImageView.Frame = new CGRect(0, 0, convertedImageSize.Width, convertedImageSize.Height);
nfloat zoomScale = 1;
if (convertedImageSize.Width < convertedImageSize.Height)
{
zoomScale = (ScrollView.Frame.Size.Width / convertedImageSize.Width);
}
else
{
zoomScale = (ScrollView.Frame.Size.Height / convertedImageSize.Height);
}
ScrollView.ContentSize = sampleImageSize;
if (zoomScale < 1)
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = 1;
ScrollView.ZoomScale = zoomScale;
}
else
{
ScrollView.MinimumZoomScale = zoomScale;
ScrollView.MaximumZoomScale = zoomScale;
ScrollView.ZoomScale = zoomScale;
}
ScrollView.ContentInset = UIEdgeInsets.Zero;
ScrollView.ContentOffset = new CGPoint((ImageView.Frame.Size.Width - ScrollView.Frame.Size.Width) / 2, (ImageView.Frame.Size.Height - ScrollView.Frame.Size.Height) / 2);
if (cropFrame.Size.Width > 0 && cropFrame.Size.Height > 0)
{
nfloat scale = UIScreen.MainScreen.Scale;
nfloat newZoomScale = (_targetSize.Width * scale) / cropFrame.Size.Width;
ScrollView.ZoomScale = newZoomScale;
nfloat heightAdjustment = (_targetSize.Height / _cropSizeRatio) - ScrollView.ContentSize.Height;
nfloat offsetY = cropFrame.Y + (heightAdjustment * _cropSizeRatio * scale);
ScrollView.ContentOffset = new CGPoint(cropFrame.X / scale / _cropSizeRatio,
(offsetY / scale / _cropSizeRatio) - heightAdjustment);
}
ScrollView.SetNeedsLayout();
UIView.Animate(0.3,
() =>
{
LoadIndicator.Alpha = 0;
ImageView.Alpha = 1;
}, () =>
{
LoadIndicator.StopAnimating();
});
});
});
}
public CGImage (int width, int height, int bitsPerComponent, int bitsPerPixel, int bytesPerRow,
CGColorSpace colorSpace, CGBitmapFlags bitmapFlags, CGDataProvider provider,
nfloat [] decode, bool shouldInterpolate, CGColorRenderingIntent intent)
{
if (width < 0)
throw new ArgumentException ("width");
if (height < 0)
throw new ArgumentException ("height");
if (bitsPerPixel < 0)
throw new ArgumentException ("bitsPerPixel");
if (bitsPerComponent < 0)
throw new ArgumentException ("bitsPerComponent");
if (bytesPerRow < 0)
throw new ArgumentException ("bytesPerRow");
handle = CGImageCreate (width, height, bitsPerComponent, bitsPerPixel, bytesPerRow,
colorSpace == null ? IntPtr.Zero : colorSpace.Handle, bitmapFlags, provider == null ? IntPtr.Zero : provider.Handle,
decode,
shouldInterpolate, intent);
}
extern static /* CGImageRef */ IntPtr CGImageCreate (/* size_t */ nint width, /* size_t */ nint height, /* size_t */ nint bitsPerComponent, /* size_t */ nint bitsPerPixel, /* size_t */ nint bytesPerRow, /* CGColorSpaceRef */ IntPtr space, CGBitmapFlags bitmapInfo, /* CGDataProviderRef */ IntPtr provider, /* CGFloat[] */ nfloat [] decode, bool shouldInterpolate, CGColorRenderingIntent intent);
public CGBitmapContext(byte [] data, int width, int height, int bitsPerComponent, int bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
: base(CGBitmapContextCreate(data, (UIntPtr)width, (UIntPtr)height, (UIntPtr)bitsPerComponent, (UIntPtr)bytesPerRow, colorSpace.handle, (uint)bitmapInfo), true)
{
}
CGImage NewCGImage(int width, int height, int bitsPerComponent, int bitsPerPixel, int bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapFlags, CGDataProvider provider, nfloat[] decode, bool shouldInterpolate, CGColorRenderingIntent intent)
{
var image = new CGImage(width, height, bitsPerComponent, bitsPerPixel, bytesPerRow, colorSpace, bitmapFlags, dataProvider, decode, shouldInterpolate, intent);
if (image == null)
{
var e = new ArgumentException("Failed to create CGImage");
e.Data["width"] = width;
e.Data["height"] = height;
e.Data["bitsPerComponent"] = bitsPerComponent;
e.Data["bitsPerPixel"] = bitsPerPixel;
e.Data["bytesPerRow"] = bytesPerRow;
e.Data["colorSpace"] = colorSpace;
e.Data["bitmapFlags"] = bitmapFlags;
e.Data["dataProvider"] = dataProvider;
e.Data["decode"] = decode;
e.Data["shouldInterpolate"] = shouldInterpolate;
e.Data["intent"] = intent;
}
return(image);
}
extern static IntPtr CGImageCreate(int size_t_width, int size_t_height, int size_t_bitsPerComponent, int size_t_bitsPerPixel, int size_t_bytesPerRow, IntPtr /* CGColorSpaceRef */ space, CGBitmapFlags bitmapInfo, IntPtr /* CGDataProviderRef */ provider, float [] decode, bool shouldInterpolate, CGColorRenderingIntent intent);
public CGBitmapContext (byte [] data, int width, int height, int bitsPerComponent, int bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
: base (CGBitmapContextCreate (data, (UIntPtr) width, (UIntPtr) height, (UIntPtr) bitsPerComponent, (UIntPtr) bytesPerRow, colorSpace.handle, (uint) bitmapInfo), true)
{
}
public CGBitmapContext(byte [] data, nint width, nint height, nint bitsPerComponent, nint bytesPerRow, CGColorSpace colorSpace, CGBitmapFlags bitmapInfo)
{
if (data != null)
{
buffer = GCHandle.Alloc(data, GCHandleType.Pinned);
}
Handle = CGBitmapContextCreate(data, width, height, bitsPerComponent, bytesPerRow, GetHandle(colorSpace), (uint)bitmapInfo);
}
