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package com.google.snappy;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.Image;
import java.nio.ByteBuffer;
/**
* Some Bitmap utility functions.
*/
public class BitmapUtility {
public static Bitmap bitmapFromJpeg(byte[] data) {
// 32K buffer.
byte[] decodeBuffer = new byte[32 * 1024]; // 32K buffer.
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inSampleSize = 16; // 3264 / 16 = 204.
opts.inTempStorage = decodeBuffer;
Bitmap b = BitmapFactory.decodeByteArray(data, 0, data.length, opts);
return rotatedBitmap(b);
}
public static Bitmap bitmapFromYuvImage(Image img) {
int w = img.getWidth();
int h = img.getHeight();
ByteBuffer buf0 = img.getPlanes()[0].getBuffer();
int len = buf0.capacity();
int[] colors = new int[len];
int alpha = 255 << 24;
int green;
for (int i = 0; i < len; i++) {
green = ((int) buf0.get(i)) & 255;
colors[i] = green << 16 | green << 8 | green | alpha;
}
Bitmap b = Bitmap.createBitmap(colors, w, h, Bitmap.Config.ARGB_8888);
return rotatedBitmap(b);
}
/**
* Returns parameter bitmap rotated 90 degrees
*/
private static Bitmap rotatedBitmap(Bitmap b) {
Matrix mat = new Matrix();
mat.postRotate(90);
Bitmap b2 = Bitmap.createBitmap(b, 0, 0,b.getWidth(),b.getHeight(), mat, true);
return b2;
}
}
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