public Bitmap takePicture() {
Bitmap bm = null;
byte[] ba;
if (getCommands != null) {
ba = getCommands.getPictureArray();
bm = Bitmap.createBitmap(256, 192, Bitmap.Config.ARGB_8888);
int w = 256;
int h = 192;
int vy, vu, y1v, y1u, uy, uv, y2u, y2v;
int V = 0, Y = 0, U = 0;
for (int i = 0; i < h; i++) {
for (int j = 0; j < w; j++) {
if (j >= 3) {
vy = -1;
vu = 2;
y1v = -1;
y1u = -3;
uy = -1;
uv = -2;
y2u = -1;
y2v = -3;
} else {
vy = 1;
vu = 2;
y1v = 3;
y1u = 1;
uy = 1;
uv = 2;
y2u = 3;
y2v = 1;
}
if ((j % 4) == 0) {
V = ba[i * w + j] & 0xff;
Y = ba[i * w + j + vy] & 0xff;
U = ba[i * w + j + vu] & 0xff;
} else if ((j % 4) == 1) {
Y = ba[i * w + j] & 0xff;
V = ba[i * w + j + y1v] & 0xff;
U = ba[i * w + j + y1u] & 0xff;
} else if ((j % 4) == 2) {
U = ba[i * w + j] & 0xff;
Y = ba[i * w + j + uy] & 0xff;
V = ba[i * w + j + uv] & 0xff;
} else if ((j % 4) == 3) {
Y = ba[i * w + j] & 0xff;
U = ba[i * w + j + y2u] & 0xff;
V = ba[i * w + j + y2v] & 0xff;
}
U = U - 128;
V = V - 128;
// Y = Y;
bm.setPixel(
j,
i,
Color.rgb(
(int) Math.max(Math.min(Y + 1.13983 * V, 255), 0),
(int) Math.max(Math.min(Y - 0.39466 * U - 0.58060 * V, 255), 0),
(int) Math.max(Math.min(Y + 2.03211 * U, 255), 0)));
}
}
}
return bm;
}
