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Android example source code file (RenderScript.java)

This example Android source code file (RenderScript.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" TM.

Java - Android tags/keywords

android, bitmap, calling, debug, drawing, element, fieldcanbelocal, graphics, messagethread, object, paint, priority, renderscript, rsmessage, string, suppresswarnings, type, ui, unuseddeclaration, util

The RenderScript.java Android example source code

/*
 * 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.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Config;
import android.util.Log;
import android.view.Surface;


/**
 * @hide
 *
 **/
public class RenderScript {
    static final String LOG_TAG = "RenderScript_jni";
    protected static final boolean DEBUG  = false;
    @SuppressWarnings({"UnusedDeclaration", "deprecation"})
    protected static final boolean LOG_ENABLED = DEBUG ? Config.LOGD : Config.LOGV;



     /*
     * We use a class initializer to allow the native code to cache some
     * field offsets.
     */
    @SuppressWarnings({"FieldCanBeLocal", "UnusedDeclaration"})
    protected static boolean sInitialized;
    native protected static void _nInit();


    static {
        sInitialized = false;
        try {
            System.loadLibrary("rs_jni");
            _nInit();
            sInitialized = true;
        } catch (UnsatisfiedLinkError e) {
            Log.d(LOG_TAG, "RenderScript JNI library not found!");
        }
    }

    native void nInitElements(int a8, int rgba4444, int rgba8888, int rgb565);

    native int  nDeviceCreate();
    native void nDeviceDestroy(int dev);
    native void nDeviceSetConfig(int dev, int param, int value);
    native int  nContextCreateGL(int dev, int ver, boolean useDepth);
    native int  nContextCreate(int dev, int ver);
    native void nContextDestroy(int con);
    native void nContextSetSurface(int w, int h, Surface sur);
    native void nContextSetPriority(int p);
    native void nContextDump(int bits);

    native void nContextBindRootScript(int script);
    native void nContextBindSampler(int sampler, int slot);
    native void nContextBindProgramFragmentStore(int pfs);
    native void nContextBindProgramFragment(int pf);
    native void nContextBindProgramVertex(int pf);
    native void nContextBindProgramRaster(int pr);
    native void nContextPause();
    native void nContextResume();
    native int nContextGetMessage(int[] data, boolean wait);
    native void nContextInitToClient();
    native void nContextDeinitToClient();

    native void nAssignName(int obj, byte[] name);
    native void nObjDestroy(int id);
    native void nObjDestroyOOB(int id);
    native int  nFileOpen(byte[] name);


    native int  nElementCreate(int type, int kind, boolean norm, int vecSize);
    native int  nElementCreate2(int[] elements, String[] names);

    native void nTypeBegin(int elementID);
    native void nTypeAdd(int dim, int val);
    native int  nTypeCreate();
    native void nTypeFinalDestroy(Type t);
    native void nTypeSetupFields(Type t, int[] types, int[] bits, Field[] IDs);

    native int  nAllocationCreateTyped(int type);
    native int  nAllocationCreateFromBitmap(int dstFmt, boolean genMips, Bitmap bmp);
    native int  nAllocationCreateBitmapRef(int type, Bitmap bmp);
    native int  nAllocationCreateFromBitmapBoxed(int dstFmt, boolean genMips, Bitmap bmp);
    native int  nAllocationCreateFromAssetStream(int dstFmt, boolean genMips, int assetStream);

    native void nAllocationUploadToTexture(int alloc, boolean genMips, int baseMioLevel);
    native void nAllocationUploadToBufferObject(int alloc);

    native void nAllocationSubData1D(int id, int off, int count, int[] d, int sizeBytes);
    native void nAllocationSubData1D(int id, int off, int count, short[] d, int sizeBytes);
    native void nAllocationSubData1D(int id, int off, int count, byte[] d, int sizeBytes);
    native void nAllocationSubData1D(int id, int off, int count, float[] d, int sizeBytes);

    native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, int[] d, int sizeBytes);
    native void nAllocationSubData2D(int id, int xoff, int yoff, int w, int h, float[] d, int sizeBytes);
    native void nAllocationRead(int id, int[] d);
    native void nAllocationRead(int id, float[] d);
    native void nAllocationSubDataFromObject(int id, Type t, int offset, Object o);
    native void nAllocationSubReadFromObject(int id, Type t, int offset, Object o);

    native void nAdapter1DBindAllocation(int ad, int alloc);
    native void nAdapter1DSetConstraint(int ad, int dim, int value);
    native void nAdapter1DData(int ad, int[] d);
    native void nAdapter1DData(int ad, float[] d);
    native void nAdapter1DSubData(int ad, int off, int count, int[] d);
    native void nAdapter1DSubData(int ad, int off, int count, float[] d);
    native int  nAdapter1DCreate();

    native void nAdapter2DBindAllocation(int ad, int alloc);
    native void nAdapter2DSetConstraint(int ad, int dim, int value);
    native void nAdapter2DData(int ad, int[] d);
    native void nAdapter2DData(int ad, float[] d);
    native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, int[] d);
    native void nAdapter2DSubData(int ad, int xoff, int yoff, int w, int h, float[] d);
    native int  nAdapter2DCreate();

    native void nScriptBindAllocation(int script, int alloc, int slot);
    native void nScriptSetClearColor(int script, float r, float g, float b, float a);
    native void nScriptSetClearDepth(int script, float depth);
    native void nScriptSetClearStencil(int script, int stencil);
    native void nScriptSetTimeZone(int script, byte[] timeZone);
    native void nScriptSetType(int type, boolean writable, String name, int slot);
    native void nScriptSetRoot(boolean isRoot);
    native void nScriptSetInvokable(String name, int slot);
    native void nScriptInvoke(int id, int slot);

    native void nScriptCBegin();
    native void nScriptCSetScript(byte[] script, int offset, int length);
    native int  nScriptCCreate();
    native void nScriptCAddDefineI32(String name, int value);
    native void nScriptCAddDefineF(String name, float value);

    native void nSamplerBegin();
    native void nSamplerSet(int param, int value);
    native int  nSamplerCreate();

    native void nProgramFragmentStoreBegin(int in, int out);
    native void nProgramFragmentStoreDepthFunc(int func);
    native void nProgramFragmentStoreDepthMask(boolean enable);
    native void nProgramFragmentStoreColorMask(boolean r, boolean g, boolean b, boolean a);
    native void nProgramFragmentStoreBlendFunc(int src, int dst);
    native void nProgramFragmentStoreDither(boolean enable);
    native int  nProgramFragmentStoreCreate();

    native int  nProgramRasterCreate(int in, int out, boolean pointSmooth, boolean lineSmooth, boolean pointSprite);
    native void nProgramRasterSetLineWidth(int pr, float v);
    native void nProgramRasterSetPointSize(int pr, float v);

    native void nProgramBindConstants(int pv, int slot, int mID);
    native void nProgramBindTexture(int vpf, int slot, int a);
    native void nProgramBindSampler(int vpf, int slot, int s);

    native int  nProgramFragmentCreate(int[] params);
    native int  nProgramFragmentCreate2(String shader, int[] params);

    native int  nProgramVertexCreate(boolean texMat);
    native int  nProgramVertexCreate2(String shader, int[] params);

    native void nLightBegin();
    native void nLightSetIsMono(boolean isMono);
    native void nLightSetIsLocal(boolean isLocal);
    native int  nLightCreate();
    native void nLightSetColor(int l, float r, float g, float b);
    native void nLightSetPosition(int l, float x, float y, float z);

    native int  nSimpleMeshCreate(int batchID, int idxID, int[] vtxID, int prim);
    native void nSimpleMeshBindVertex(int id, int alloc, int slot);
    native void nSimpleMeshBindIndex(int id, int alloc);

    native void nAnimationBegin(int attribCount, int keyframeCount);
    native void nAnimationAdd(float time, float[] attribs);
    native int  nAnimationCreate();

    protected int     mDev;
    protected int     mContext;
    @SuppressWarnings({"FieldCanBeLocal"})
    protected MessageThread mMessageThread;

    Element mElement_USER_U8;
    Element mElement_USER_I8;
    Element mElement_USER_U16;
    Element mElement_USER_I16;
    Element mElement_USER_U32;
    Element mElement_USER_I32;
    Element mElement_USER_F32;

    Element mElement_A_8;
    Element mElement_RGB_565;
    Element mElement_RGB_888;
    Element mElement_RGBA_5551;
    Element mElement_RGBA_4444;
    Element mElement_RGBA_8888;

    Element mElement_INDEX_16;
    Element mElement_POSITION_2;
    Element mElement_POSITION_3;
    Element mElement_TEXTURE_2;
    Element mElement_NORMAL_3;
    Element mElement_COLOR_U8_4;
    Element mElement_COLOR_F32_4;

    ///////////////////////////////////////////////////////////////////////////////////
    //

    public static class RSMessage implements Runnable {
        protected int[] mData;
        protected int mID;
        public void run() {
        }
    }
    public RSMessage mMessageCallback = null;

    public enum Priority {
        LOW (5),     //ANDROID_PRIORITY_BACKGROUND + 5
        NORMAL (-4);  //ANDROID_PRIORITY_DISPLAY

        int mID;
        Priority(int id) {
            mID = id;
        }
    }

    void validate() {
        if (mContext == 0) {
            throw new IllegalStateException("Calling RS with no Context active.");
        }
    }

    public void contextSetPriority(Priority p) {
        validate();
        nContextSetPriority(p.mID);
    }

    protected static class MessageThread extends Thread {
        RenderScript mRS;
        boolean mRun = true;

        MessageThread(RenderScript rs) {
            super("RSMessageThread");
            mRS = rs;

        }

        public void run() {
            // This function is a temporary solution.  The final solution will
            // used typed allocations where the message id is the type indicator.
            int[] rbuf = new int[16];
            mRS.nContextInitToClient();
            while(mRun) {
                int msg = mRS.nContextGetMessage(rbuf, true);
                if (msg == 0) {
                    // Should only happen during teardown.
                    // But we want to avoid starving other threads during
                    // teardown by yielding until the next line in the destructor
                    // can execute to set mRun = false
                    try {
                        sleep(1, 0);
                    } catch(InterruptedException e) {
                    }
                }
                if(mRS.mMessageCallback != null) {
                    mRS.mMessageCallback.mData = rbuf;
                    mRS.mMessageCallback.mID = msg;
                    mRS.mMessageCallback.run();
                }
                //Log.d(LOG_TAG, "MessageThread msg " + msg + " v1 " + rbuf[0] + " v2 " + rbuf[1] + " v3 " +rbuf[2]);
            }
            Log.d(LOG_TAG, "MessageThread exiting.");
        }
    }

    protected RenderScript() {
    }

    public static RenderScript create() {
        RenderScript rs = new RenderScript();

        rs.mDev = rs.nDeviceCreate();
        rs.mContext = rs.nContextCreate(rs.mDev, 0);
        rs.mMessageThread = new MessageThread(rs);
        rs.mMessageThread.start();
        Element.initPredefined(rs);
        return rs;
    }

    public void contextDump(int bits) {
        validate();
        nContextDump(bits);
    }

    public void destroy() {
        validate();
        nContextDeinitToClient();
        mMessageThread.mRun = false;

        nContextDestroy(mContext);
        mContext = 0;

        nDeviceDestroy(mDev);
        mDev = 0;
    }

    boolean isAlive() {
        return mContext != 0;
    }

    ///////////////////////////////////////////////////////////////////////////////////
    // Root state

    protected int safeID(BaseObj o) {
        if(o != null) {
            return o.mID;
        }
        return 0;
    }
}


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