Question

我正在尝试使用Renderscript将YUV NV21图像转换为Android中的黑白图像。我是Renderscript的新手，在打电话时

    mScript.forEach_root(inAllocation, outAllocation);

我收到以下错误：

    android.support.v8.renderscript.RSRuntimeException: Dimension mismatch between parameters ain and aout!
    at org.rwca.anthe.robocup15.ScriptC_imageProc.forEach_root(ScriptC_imageProc.java:87)
    at org.rwca.anthe.robocup15.ScriptC_imageProc.forEach_root(ScriptC_imageProc.java:66)
    at org.rwca.anthe.robocup15.MainActivity$imgProc.process(MainActivity.java:115)
    at io.fotoapparat.FotoapparatBuilder$frameProcessor$2$1$1.invoke(FotoapparatBuilder.kt:137)
    at io.fotoapparat.FotoapparatBuilder$frameProcessor$2$1$1.invoke(FotoapparatBuilder.kt:21)
    at io.fotoapparat.preview.PreviewStream.dispatchFrame(PreviewStream.kt:107)
    at io.fotoapparat.preview.PreviewStream.access$dispatchFrame(PreviewStream.kt:16)
    at io.fotoapparat.preview.PreviewStream$dispatchFrameOnBackgroundThread$1.run(PreviewStream.kt:92)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
    at java.lang.Thread.run(Thread.java:818)

所以我做到了：

byte[] test = copyOfRange(nv21ByteArray, 0, size); //copyOfRange(...) is inAllocation
Log.i(TAG, String.valueOf(test.length));
Log.i(TAG, String.valueOf(bitmap.getByteCount())); //bitmap is outAllocation

我发现它们都等于1 228800。那么错误是什么意思？因为inAllocation和outAllocation应该是相同的大小吧？

这是我的Java代码：

package org.rwca.anthe.robocup15;

import android.graphics.Bitmap;
import android.support.v8.renderscript.Allocation;
import android.support.v8.renderscript.Element;
import android.support.v8.renderscript.RenderScript;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v8.renderscript.Type;
import android.util.Log;
import android.widget.ImageView;
import android.widget.Toast;

import org.jetbrains.annotations.NotNull;

import io.fotoapparat.Fotoapparat;
import io.fotoapparat.error.CameraErrorListener;
import io.fotoapparat.exception.camera.CameraException;
import io.fotoapparat.parameter.ScaleType;
import io.fotoapparat.preview.Frame;
import io.fotoapparat.preview.FrameProcessor;
import io.fotoapparat.view.CameraView;

import static io.fotoapparat.log.LoggersKt.fileLogger;
import static io.fotoapparat.log.LoggersKt.logcat;
import static io.fotoapparat.log.LoggersKt.loggers;
import static io.fotoapparat.selector.LensPositionSelectorsKt.back;
import static java.util.Arrays.copyOfRange;

public class MainActivity extends AppCompatActivity {

public static final String TAG = MainActivity.class.getSimpleName();

private CameraView cameraView;
private ImageView imageView;
private Fotoapparat fotoapparat;

public byte[] nv21ByteArray;
public int size = 960 * 1280;
public int thresholdValue;

public Bitmap bitmap;

public RenderScript rs;
public Allocation inAllocation, outAllocation;
public ScriptC_imageProc mScript;

@NonNull
private Fotoapparat createFotoapparat() {
    return Fotoapparat
            .with(this)
            .into(cameraView)
            .previewScaleType(ScaleType.CenterCrop)
            .lensPosition(back())
            .frameProcessor(new imgProc())
            .logger(loggers(
                    logcat(),
                    fileLogger(this)
            ))
            .cameraErrorCallback(new CameraErrorListener() {
                @Override
                public void onError(CameraException e) {
                    Toast.makeText(MainActivity.this, e.toString(), Toast.LENGTH_LONG).show();;
                }
            })
            .build();
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    cameraView = findViewById(R.id.cameraView);
    imageView = findViewById(R.id.imageView);
    fotoapparat = createFotoapparat();

    bitmap = Bitmap.createBitmap(960, 1280, Bitmap.Config.ALPHA_8);

    rs = RenderScript.create(this);
    mScript = new ScriptC_imageProc(rs);
    Type t = Type.createX(rs, Element.U8(rs), size);
    inAllocation = Allocation.createTyped(rs, t);
    outAllocation = Allocation.createFromBitmap(rs, bitmap);
}

@Override
protected void onResume() {
    super.onResume();
}

@Override
protected void onStart() {
    super.onStart();
    fotoapparat.start();
}

@Override
protected void onStop() {
    super.onStop();
    fotoapparat.stop();
}

private class imgProc implements FrameProcessor {
    @Override
    public void process(@NotNull Frame frame) {

        nv21ByteArray = frame.getImage();

        inAllocation.copyFromUnchecked(copyOfRange(nv21ByteArray, 0, size));

        mScript.set_thresholdValue(thresholdValue);
        mScript.forEach_root(inAllocation, outAllocation);
        outAllocation.copyTo(bitmap);

        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                imageView.setImageBitmap(bitmap);
            }
        });
    }
}
}

这是我的Renderscript文件：

#pragma version(1)
#pragma rs java_package_name(org.rwca.anthe.robocup15)

#include "rs_core.rsh"
#include "rs_time.rsh"

int thresholdValue;

uchar __attribute__((kernel)) root(uchar in, uint32_t x) {
}

得到错误：“参数ain和aout之间的尺寸不匹配”

0 个答案: