ScriptIntrinsicLUTpublic final class ScriptIntrinsicLUT extends ScriptIntrinsic Intrinsic for applying a per-channel lookup table. Each
channel of the input has an independant lookup table. The
tables are 256 entries in size and can cover the full value
range of {@link Element#U8_4}. |
Fields Summary |
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private final Matrix4f | mMatrix | private Allocation | mTables | private final byte[] | mCache | private boolean | mDirty |
Constructors Summary |
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private ScriptIntrinsicLUT(long id, RenderScript rs)
super(id, rs);
mTables = Allocation.createSized(rs, Element.U8(rs), 1024);
for (int ct=0; ct < 256; ct++) {
mCache[ct] = (byte)ct;
mCache[ct + 256] = (byte)ct;
mCache[ct + 512] = (byte)ct;
mCache[ct + 768] = (byte)ct;
}
setVar(0, mTables);
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Methods Summary |
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public static android.renderscript.ScriptIntrinsicLUT | create(RenderScript rs, Element e)Supported elements types are {@link Element#U8_4}
The defaults tables are identity.
long id = rs.nScriptIntrinsicCreate(3, e.getID(rs));
return new ScriptIntrinsicLUT(id, rs);
| public void | forEach(Allocation ain, Allocation aout)Invoke the kernel and apply the lookup to each cell of ain
and copy to aout.
forEach(ain, aout, null);
| public void | forEach(Allocation ain, Allocation aout, Script.LaunchOptions opt)Invoke the kernel and apply the lookup to each cell of ain
and copy to aout.
if (mDirty) {
mDirty = false;
mTables.copyFromUnchecked(mCache);
}
forEach(0, ain, aout, null, opt);
| public Script.KernelID | getKernelID()Get a KernelID for this intrinsic kernel.
return createKernelID(0, 3, null, null);
| public void | setAlpha(int index, int value)Set an entry in the alpha channel lookup table
validate(index, value);
mCache[index+768] = (byte)value;
mDirty = true;
| public void | setBlue(int index, int value)Set an entry in the blue channel lookup table
validate(index, value);
mCache[index+512] = (byte)value;
mDirty = true;
| public void | setGreen(int index, int value)Set an entry in the green channel lookup table
validate(index, value);
mCache[index+256] = (byte)value;
mDirty = true;
| public void | setRed(int index, int value)Set an entry in the red channel lookup table
validate(index, value);
mCache[index] = (byte)value;
mDirty = true;
| private void | validate(int index, int value)
if (index < 0 || index > 255) {
throw new RSIllegalArgumentException("Index out of range (0-255).");
}
if (value < 0 || value > 255) {
throw new RSIllegalArgumentException("Value out of range (0-255).");
}
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