void UploadBytes(ref byte[] pixels, int width, int height)
{
ImagePixels ip = new ImagePixels(width, height, pixels);
ParameterizedThreadStart ts = new ParameterizedThreadStart(CountryRecognition);
Thread thread = new Thread(ts);
thread.Start(ip);
}
/// <summary>
/// byte配列からWriteableBitmap(BitmapSource)を作成する
/// </summary>
/// <param name="image"></param>
/// <returns></returns>
private static WriteableBitmap CreateWriteableBitmap(ImagePixels image)
{
const double dpi = 96.0;
var pixelFormat = PixelFormats.Bgra32;
var bitmap = new WriteableBitmap(image.Width, image.Height, dpi, dpi, pixelFormat, null);
bitmap.WritePixels(
new Int32Rect(0, 0, image.Width, image.Height),
image.Pixels, image.Stride, 0);
return(bitmap);
}
void CountryRecognition(System.Object obj)
{
ImagePixels ip = (ImagePixels)obj;
#if UNITY_IPHONE && !UNITY_EDITOR
sw.Start();
country_code = predict(ip.pixels, ip.height, ip.width, 400, 200, 200, multi_class_model_path, one_class_model_path, dict_path, 0.4, ref prob);
sw.Stop();
//UnityEngine.Debug.Log ("Recognition cost: "+sw.ElapsedMilliseconds+" ms\n");
#else
country_code = 1;
#endif
sw.Reset();
setRecognitionStatus(RECOG_STATUS.FINISHED);
}
public ImageStatistic(ImagePixels img)
{
Histogram = new BitmapHistogram();
img.ForEachOnPixel(DoHistogram);
}
//
// FNA3D_Image_Free
//
public static void FNA3D_Image_Free(IntPtr mem)
{
// FNA calls this method after uploading the data returned by
// ReadImageStream, so we can safely discard the reference
ImagePixels.set(null);
}
//
// ReadImageStream
//
public static IntPtr ReadImageStream(System.IO.Stream stream,
out int width, out int height, out int len,
int forceWidth, int forceHeight, bool zoom)
{
var bitmap = LoadBitmap(stream);
int[] pixels;
if (forceWidth == -1 || forceHeight == -1)
{
pixels = GetPixels(bitmap, out width, out height, out len);
}
else
{
pixels = CropAndScale(bitmap, forceWidth, forceHeight, zoom,
out width, out height, out len);
}
// keep a strong reference until FNA3D_Image_Free is called
ImagePixels.set(pixels);
return(System.Runtime.InteropServices.GCHandle.Alloc(
pixels, System.Runtime.InteropServices.GCHandleType.Pinned)
.AddrOfPinnedObject());
android.graphics.Bitmap LoadBitmap(System.IO.Stream stream)
{
if (stream is Microsoft.Xna.Framework.TitleContainer.TitleStream titleStream)
{
var bitmap = android.graphics.BitmapFactory
.decodeStream(titleStream.JavaStream);
if (bitmap == null ||
bitmap.getConfig() != android.graphics.Bitmap.Config.ARGB_8888)
{
string reason = (bitmap == null) ? "unspecified error"
: $"unsupported config '{bitmap.getConfig()}'";
throw new BadImageFormatException(
$"Load failed for bitmap image '{titleStream.Name}': {reason}");
}
return(bitmap);
}
throw new ArgumentException(stream?.GetType()?.ToString());
}
int[] CropAndScale(android.graphics.Bitmap bitmap,
int newWidth, int newHeight, bool zoom,
out int width, out int height, out int len)
{
int oldWidth = bitmap.getWidth();
int oldHeight = bitmap.getHeight();
bool scaleWidth = zoom ? (oldWidth < oldHeight) : (oldWidth > oldHeight);
float scaleFactor = scaleWidth ? ((float)newWidth / (float)oldWidth)
: ((float)newHeight / (float)oldHeight);
if (zoom)
{
int x, y, w, h;
if (scaleWidth)
{
x = 0;
y = (int)(oldHeight / 2 - (newHeight / scaleFactor) / 2);
w = oldWidth;
h = (int)(newHeight / scaleFactor);
}
else
{
x = (int)(oldWidth / 2 - (newWidth / scaleFactor) / 2);
y = 0;
w = (int)(newWidth / scaleFactor);
h = oldHeight;
}
bitmap = android.graphics.Bitmap.createBitmap(bitmap, x, y, w, h);
}
else
{
newWidth = (int)(oldWidth * scaleFactor);
newHeight = (int)(oldHeight * scaleFactor);
}
return(GetPixels(android.graphics.Bitmap.createScaledBitmap(
bitmap, newWidth, newHeight, false),
out width, out height, out len));
}
int[] GetPixels(android.graphics.Bitmap bitmap,
out int width, out int height, out int len)
{
int w = bitmap.getWidth();
int h = bitmap.getHeight();
var pixels = new int[w * h];
bitmap.copyPixelsToBuffer(java.nio.IntBuffer.wrap(pixels));
width = w;
height = h;
len = w * h * 4;
return(pixels);
}
}
