public static byte[] getPixelsBGR(Bitmap bitmap) {
//	calculate how many bytes our image consists of int bytes = bitmap.getByteCount();
//	Create a new buffer
//	Move the byte data to the buffer
bitmap.copyPixelsToBuffer(buffer);
//	Get the underlying array containing the data. byte[] temp = buffer.array();
//	Allocate for BGR
byte[] pixels = new byte[(temp.length / 4) * 3];
// Copy pixels into place
for (int i = 0; i < temp.length / 4; i++) {
//B
pixels[i * 3] = temp[i * 4 + 2];
//G
pixels[i * 3 + 1] = temp[i * 4 + 1];
//R
pixels[i * 3 + 2] = temp[i * 4];
}
return pixels;
}

                                

public static byte[] getNV21(int inputWidth, int inputHeight, Bitmap bitmap){ int[] argb = new int[inputWidth * inputHeight]; bitmap.getPixels(argb, 0, inputWidth, 0, 0, inputWidth, inputHeight); byte[] yuv = new byte[inputWidth * inputHeight * 3 / 2]; encodeYUV420SP(yuv, argb, inputWidth, inputHeight);
bitmap.recycle();
return yuv;
}
private static void encodeYUV420SP(byte[] yuv420sp, int[] argb, int width, int height)
{
final int frameSize = width * height;
int yIndex = 0;
int uvIndex = frameSize;
int a, R, G, B, Y, U, V;
int index = 0;
for (int j = 0; j < height; j++) {
for (int i = 0; i < width; i++) {
// a is not used obviously
a = (argb[index] & 0xff000000) >> 24;
R = (argb[index] & 0xff0000) >> 16;
G = (argb[index] & 0xff00) >> 8;
B = (argb[index] & 0xff) >> 0;
Y = ((66 * R + 129 * G + 25 * B + 128) >> 8) + 16;
U = ((-38 * R - 74 * G + 112 * B + 128) >> 8) + 128;
V = ((112 * R - 94 * G - 18 * B + 128) >> 8) + 128;
yuv420sp[yIndex++] = (byte) ((Y < 0) ? 0: ((Y > 255) ? 255 : Y)); if (j % 2 == 0 && index % 2 == 0) {
yuv420sp[uvIndex++] = (byte) ((V < 0) ? 0 : ((V > 255) ? 255 : V));
yuv420sp[uvIndex++] = (byte) ((U < 0) ? 0 : ((U > 255) ? 255 : U));
}
index++;
}
}
}