Android 用の OpenCV を使用しており、カスタム フレーム レートを設定しようとしています。さて、私はフレームレートの範囲を設定しようとしています。カスタム解像度も設定しようとしています
私はopenCVチュートリアル3 Camera Controlに従っています。デバイスで実行を開始すると、アプリがクラッシュします。Nexus 7 2013 タブレットを使用しています
以下は私のコードです：
public class Tutorial2Activity extends Activity implements CvCameraViewListener2
{
private static final String TAG = "OCVSample::Activity";
private static final int VIEW_MODE_RGBA = 0;
private static final int VIEW_MODE_GRAY = 1;
private static final int VIEW_MODE_CANNY = 2;
private static final int VIEW_MODE_FEATURES = 5;
private int mViewMode;
private Mat mRgba;
private Mat mIntermediateMat;
private Mat mGray;
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewGray;
private MenuItem mItemPreviewCanny;
private MenuItem mItemPreviewFeatures;
private CustomizeCameraView mOpenCvCameraView;
private List<Size> mResolutionList;
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
// Load native library after(!) OpenCV initialization
System.loadLibrary("mixed_sample");
mOpenCvCameraView.enableView();
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
public Tutorial2Activity() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "called onCreate");
super.onCreate(savedInstanceState);
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.tutorial2_surface_view);
mOpenCvCameraView = (CustomizeCameraView) findViewById(R.id.tutorial2_activity_surface_view);
mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE);
mOpenCvCameraView.setCvCameraViewListener(this);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
Log.i(TAG, "called onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewGray = menu.add("Preview GRAY");
mItemPreviewCanny = menu.add("Canny");
mItemPreviewFeatures = menu.add("Find features");
return true;
}
@Override
public void onPause()
{
super.onPause();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
@Override
public void onResume()
{
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_3, this, mLoaderCallback);
}
public void onDestroy() {
super.onDestroy();
if (mOpenCvCameraView != null)
mOpenCvCameraView.disableView();
}
public void onCameraViewStarted(int width, int height) {
mRgba = new Mat(height, width, CvType.CV_8UC4);
mIntermediateMat = new Mat(height, width, CvType.CV_8UC4);
mGray = new Mat(height, width, CvType.CV_8UC1);
mResolutionList = mOpenCvCameraView.getResolutionList();
int mFrameWidth = (int) mResolutionList.get(7).width;
int mFrameHeight = (int) mResolutionList.get(7).height;
mOpenCvCameraView.setResolution(mFrameHeight,mFrameWidth);
//mOpenCvCameraView.setPreviewFPS(1000, 31000);
}
public void onCameraViewStopped() {
mRgba.release();
mGray.release();
mIntermediateMat.release();
}
public Mat onCameraFrame(CvCameraViewFrame inputFrame) {
return inputFrame.rgba();
}
public boolean onOptionsItemSelected(MenuItem item) {
Log.i(TAG, "called onOptionsItemSelected; selected item: " + item);
if (item == mItemPreviewRGBA) {
mViewMode = VIEW_MODE_RGBA;
} else if (item == mItemPreviewGray) {
mViewMode = VIEW_MODE_GRAY;
} else if (item == mItemPreviewCanny) {
mViewMode = VIEW_MODE_CANNY;
} else if (item == mItemPreviewFeatures) {
mViewMode = VIEW_MODE_FEATURES;
}
return true;
}
public native void FindFeatures(long matAddrGr, long matAddrRgba);
}
そしてJavaCameraViewカスタムクラス
public class CustomizeCameraView extends JavaCameraView{
public CustomizeCameraView(Context context, AttributeSet attrs) {
super(context, attrs);
}
//@SuppressWarnings("deprecation")
public void setPreviewFPS(double min, double max){
Camera.Parameters params = mCamera.getParameters();
params.setPreviewFpsRange((int)(min*1000), (int)(max*1000));
//params.setPreviewFrameRate(min);
mCamera.setParameters(params);
// mCamera.getSupportedPreviewFpsRange();
}
public List<Size> getResolutionList() {
return mCamera.getParameters().getSupportedPreviewSizes();
// return mCamera.getParameters().getPictureSize();
}
public void setResolution(int h,int w){
Camera.Parameters params = mCamera.getParameters();
params.setPreviewSize(mFrameWidth, mFrameHeight);
mCamera.setParameters(params); // mCamera is a Camera object
}
public Size getResolution() {
return mCamera.getParameters().getPreviewSize();
}
}
logcat の出力は次のとおりです。
05-23 14:27:18.192: E/AndroidRuntime(29339): FATAL EXCEPTION: main
05-23 14:27:18.192: E/AndroidRuntime(29339): Process: org.opencv.samples.tutorial2, PID: 29339
05-23 14:27:18.192: E/AndroidRuntime(29339): java.lang.RuntimeException: Unable to start activity ComponentInfo{org.opencv.samples.tutorial2/org.opencv.samples.tutorial2.Tutorial2Activity}: java.lang.ClassCastException: org.opencv.android.JavaCameraView cannot be cast to org.opencv.samples.tutorial2.CustomizeCameraView