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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.renderscript;
import java.lang.reflect.Field;
import android.util.Log;
/**
* Type is an allocation template. It consists of an Element and one or more
* dimensions. It describes only the layout of memory but does not allocate and
* storage for the data thus described.
*
* A Type consists of several dimensions. Those are X, Y, Z, LOD (level of
* detail), Faces (faces of a cube map). The X,Y,Z dimensions can be assigned
* any positive integral value within the constraints of available memory. A
* single dimension allocation would have an X dimension of greater than zero
* while the Y and Z dimensions would be zero to indicate not present. In this
* regard an allocation of x=10, y=1 would be considered 2 dimensionsal while
* x=10, y=0 would be considered 1 dimensional.
*
* The LOD and Faces dimensions are booleans to indicate present or not present.
*
**/
public class Type extends BaseObj {
int mDimX;
int mDimY;
int mDimZ;
boolean mDimMipmaps;
boolean mDimFaces;
int mElementCount;
Element mElement;
public enum CubemapFace {
POSITVE_X (0),
NEGATIVE_X (1),
POSITVE_Y (2),
NEGATIVE_Y (3),
POSITVE_Z (4),
NEGATIVE_Z (5);
int mID;
CubemapFace(int id) {
mID = id;
}
}
/**
* Return the element associated with this Type.
*
* @return Element
*/
public Element getElement() {
return mElement;
}
/**
* Return the value of the X dimension.
*
* @return int
*/
public int getX() {
return mDimX;
}
/**
* Return the value of the Y dimension or 0 for a 1D allocation.
*
* @return int
*/
public int getY() {
return mDimY;
}
/**
* Return the value of the Z dimension or 0 for a 1D or 2D allocation.
*
* @return int
*/
public int getZ() {
return mDimZ;
}
/**
* Return if the Type has a mipmap chain.
*
* @return boolean
*/
public boolean hasMipmaps() {
return mDimMipmaps;
}
/**
* Return if the Type is a cube map.
*
* @return boolean
*/
public boolean hasFaces() {
return mDimFaces;
}
/**
* Return the total number of accessable cells in the Type.
*
* @return int
*/
public int getCount() {
return mElementCount;
}
void calcElementCount() {
boolean hasLod = hasMipmaps();
int x = getX();
int y = getY();
int z = getZ();
int faces = 1;
if (hasFaces()) {
faces = 6;
}
if (x == 0) {
x = 1;
}
if (y == 0) {
y = 1;
}
if (z == 0) {
z = 1;
}
int count = x * y * z * faces;
if (hasLod && (x > 1) && (y > 1) && (z > 1)) {
if(x > 1) {
x >>= 1;
}
if(y > 1) {
y >>= 1;
}
if(z > 1) {
z >>= 1;
}
count += x * y * z * faces;
}
mElementCount = count;
}
Type(int id, RenderScript rs) {
super(id, rs);
}
@Override
void updateFromNative() {
// We have 6 integer to obtain mDimX; mDimY; mDimZ;
// mDimLOD; mDimFaces; mElement;
int[] dataBuffer = new int[6];
mRS.nTypeGetNativeData(getID(), dataBuffer);
mDimX = dataBuffer[0];
mDimY = dataBuffer[1];
mDimZ = dataBuffer[2];
mDimMipmaps = dataBuffer[3] == 1 ? true : false;
mDimFaces = dataBuffer[4] == 1 ? true : false;
int elementID = dataBuffer[5];
if(elementID != 0) {
mElement = new Element(elementID, mRS);
mElement.updateFromNative();
}
calcElementCount();
}
/**
* Builder class for Type.
*
*/
public static class Builder {
RenderScript mRS;
int mDimX = 1;
int mDimY;
int mDimZ;
boolean mDimMipmaps;
boolean mDimFaces;
Element mElement;
/**
* Create a new builder object.
*
* @param rs
* @param e The element for the type to be created.
*/
public Builder(RenderScript rs, Element e) {
e.checkValid();
mRS = rs;
mElement = e;
}
/**
* Add a dimension to the Type.
*
*
* @param d
* @param value
*/
public Builder setX(int value) {
if(value < 1) {
throw new RSIllegalArgumentException("Values of less than 1 for Dimension X are not valid.");
}
mDimX = value;
return this;
}
public Builder setY(int value) {
if(value < 1) {
throw new RSIllegalArgumentException("Values of less than 1 for Dimension Y are not valid.");
}
mDimY = value;
return this;
}
public Builder setMipmaps(boolean value) {
mDimMipmaps = value;
return this;
}
public Builder setFaces(boolean value) {
mDimFaces = value;
return this;
}
/**
* Validate structure and create a new type.
*
* @return Type
*/
public Type create() {
if (mDimZ > 0) {
if ((mDimX < 1) || (mDimY < 1)) {
throw new RSInvalidStateException("Both X and Y dimension required when Z is present.");
}
if (mDimFaces) {
throw new RSInvalidStateException("Cube maps not supported with 3D types.");
}
}
if (mDimY > 0) {
if (mDimX < 1) {
throw new RSInvalidStateException("X dimension required when Y is present.");
}
}
if (mDimFaces) {
if (mDimY < 1) {
throw new RSInvalidStateException("Cube maps require 2D Types.");
}
}
int id = mRS.nTypeCreate(mElement.getID(), mDimX, mDimY, mDimZ, mDimMipmaps, mDimFaces);
Type t = new Type(id, mRS);
t.mElement = mElement;
t.mDimX = mDimX;
t.mDimY = mDimY;
t.mDimZ = mDimZ;
t.mDimMipmaps = mDimMipmaps;
t.mDimFaces = mDimFaces;
t.calcElementCount();
return t;
}
}
}
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