Example usage for org.opencv.android JavaCameraView.JavaCameraSizeAccessor JavaCameraView.JavaCameraSizeAccessor

Introduction

In this page you can find the example usage for org.opencv.android JavaCameraView.JavaCameraSizeAccessor JavaCameraView.JavaCameraSizeAccessor.

Prototype

JavaCameraView.JavaCameraSizeAccessor

Source Link

Usage

From source file:to.augmented.reality.android.aremu.opencv.EmulatorCameraView.java

License:Apache License

private boolean initializeCamera(int width, int height)
//-----------------------------------------------------
{
    boolean result = true;
    synchronized (this) {
        if (camera != null)
            try {
                camera.release();//  ww  w. ja  v a  2s.  com
            } catch (Exception _e) {
            }
        camera = null;
        Camera realCamera = null;
        int backId = -1, frontId = -1;
        Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
        for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
            Camera.getCameraInfo(i, cameraInfo);
            if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK)
                backId = i;
            else if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT)
                frontId = i;
        }
        if (mCameraIndex == CAMERA_ID_ANY) {
            int id = (backId >= 0) ? backId : (frontId >= 0) ? frontId : -1;
            if (id >= 0)
                try {
                    realCamera = Camera.open(id);
                } catch (Exception e) {
                    realCamera = null;
                    Log.e(TAG, "camera id " + id, e);
                }
            if (realCamera == null) {
                id = (id == backId) ? frontId : backId;
                try {
                    realCamera = Camera.open(id);
                } catch (Exception e) {
                    realCamera = null;
                    Log.e(TAG, "camera id " + id, e);
                }
            }
            if (realCamera != null)
                new ARCamera(context, id, realCamera);
            else {
                new ARCamera(context, -1);
                id = -1;
            }
            camera = (ARCamera) ARCamera.open(id);
        } else {
            int id = -1;
            if (mCameraIndex == CAMERA_ID_BACK) {
                try {
                    realCamera = Camera.open(backId);
                } catch (Exception e) {
                    realCamera = null;
                }
                id = backId;
            } else if (mCameraIndex == CAMERA_ID_FRONT) {
                try {
                    realCamera = Camera.open(frontId);
                } catch (Exception e) {
                    realCamera = null;
                }
                id = frontId;
            }
            if (realCamera != null)
                new ARCamera(context, id, realCamera);
            else
                new ARCamera(context, id);
            camera = (ARCamera) ARCamera.open(id);
        }

        if (camera == null)
            return false;
        try {
            if ((headerFile != null) && (framesFile != null))
                camera.setFiles(headerFile, framesFile);
            else {
                Log.w(TAG, "Recording files not set in initializeCamera. Call setRecordingFiles in onCreate.");
                return true;
            }
            Camera.Parameters params = camera.getParameters();
            List<Camera.Size> sizes = params.getSupportedPreviewSizes();
            if (sizes != null) {
                Size frameSize = calculateCameraFrameSize(sizes, new JavaCameraView.JavaCameraSizeAccessor(),
                        width, height);
                params.setPreviewSize((int) frameSize.width, (int) frameSize.height);
                camera.setParameters(params);
                params = camera.getParameters();

                mFrameWidth = params.getPreviewSize().width;
                mFrameHeight = params.getPreviewSize().height;

                if ((getLayoutParams().width == ViewGroup.LayoutParams.MATCH_PARENT)
                        && (getLayoutParams().height == ViewGroup.LayoutParams.MATCH_PARENT))
                    mScale = Math.min(((float) height) / mFrameHeight, ((float) width) / mFrameWidth);
                else
                    mScale = 0;

                if (mFpsMeter != null)
                    mFpsMeter.setResolution(mFrameWidth, mFrameHeight);
                int bufferSize = camera.getPreviewBufferSize();
                buffer = new byte[bufferSize];

                camera.addCallbackBuffer(buffer);
                camera.setPreviewCallbackWithBuffer(this);

                frameBuffer = new FrameRingBuffer(2, bufferSize);
                AllocateCache();
                //               cameraFrames = new AREmuCameraFrame[2];
                //               cameraFrames[0] = new AREmuCameraFrame(frameChain[0], camera.getFileFormat(), mFrameWidth, mFrameHeight);
                //               cameraFrames[1] = new AREmuCameraFrame(frameChain[1], camera.getFileFormat(), mFrameWidth, mFrameHeight);

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
                    surfaceTexture = new SurfaceTexture(MAGIC_TEXTURE_ID);
                    camera.setPreviewTexture(surfaceTexture);
                } else
                    camera.setPreviewDisplay(null);
                camera.startPreview();
            } else
                result = false;
        } catch (Exception e) {
            result = false;
            Log.e(TAG, "", e);
        }
    }
    return result;
}

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