Example usage for android.media ImageReader newInstance

Introduction

In this page you can find the example usage for android.media ImageReader newInstance.

Prototype

public static ImageReader newInstance(int width, int height, int format, int maxImages) 

Source Link

Document

Create a new reader for images of the desired size and format.

Usage

From source file:com.askjeffreyliu.camera2barcode.camera.CameraSource.java

/**
 * Creates a new {@link CameraCaptureSession} for camera preview.
 *//*from w  ww  .  j  a  v  a2  s.c o  m*/
private void createCameraPreviewSession() {
    try {
        SurfaceTexture texture = mTextureView.getSurfaceTexture();
        assert texture != null;

        // We configure the size of default buffer to be the size of camera preview we want.
        texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());

        mImageReaderPreview = ImageReader.newInstance(mPreviewSize.getWidth(), mPreviewSize.getHeight(),
                ImageFormat.YUV_420_888, 1);
        mImageReaderPreview.setOnImageAvailableListener(mOnPreviewAvailableListener, mBackgroundHandler);

        // This is the output Surface we need to start preview.
        Surface surface = new Surface(texture);

        // We set up a CaptureRequest.Builder with the output Surface.
        mPreviewRequestBuilder = mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
        mPreviewRequestBuilder.addTarget(surface);
        mPreviewRequestBuilder.addTarget(mImageReaderPreview.getSurface());

        // Here, we create a CameraCaptureSession for camera preview.
        mCameraDevice.createCaptureSession(Arrays.asList(surface, mImageReaderPreview.getSurface()),
                new CameraCaptureSession.StateCallback() {

                    @Override
                    public void onConfigured(@NonNull CameraCaptureSession cameraCaptureSession) {
                        // The camera is already closed
                        if (null == mCameraDevice) {
                            return;
                        }

                        // When the session is ready, we start displaying the preview.
                        mCaptureSession = cameraCaptureSession;
                        try {
                            // Auto focus should be continuous for camera preview.
                            mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, mFocusMode);
                            if (mFlashSupported) {
                                mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_MODE, mFlashMode);
                            }

                            // Finally, we start displaying the camera preview.
                            mPreviewRequest = mPreviewRequestBuilder.build();
                            mCaptureSession.setRepeatingRequest(mPreviewRequest, mCaptureCallback,
                                    mBackgroundHandler);
                        } catch (CameraAccessException e) {
                            e.printStackTrace();
                        }
                    }

                    @Override
                    public void onConfigureFailed(@NonNull CameraCaptureSession cameraCaptureSession) {
                        Log.d(TAG, "Configuration failed!");
                    }
                }, null);
    } catch (CameraAccessException e) {
        e.printStackTrace();
    }
}

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From source file:com.android.camera2.its.ItsService.java

private void prepareCaptureReader(int[] widths, int[] heights, int formats[], int numSurfaces) {
    if (mCaptureReaders != null) {
        for (int i = 0; i < mCaptureReaders.length; i++) {
            if (mCaptureReaders[i] != null) {
                mCaptureReaders[i].close();
            }/*from  ww w. j  a  va 2  s.  co  m*/
        }
    }
    mCaptureReaders = new ImageReader[numSurfaces];
    for (int i = 0; i < numSurfaces; i++) {
        mCaptureReaders[i] = ImageReader.newInstance(widths[i], heights[i], formats[i],
                MAX_CONCURRENT_READER_BUFFERS);
    }
}

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From source file:freed.cam.apis.camera2.modules.PictureModuleApi2.java

private void SetBurst(int burst) {
    try {//w  w w .  j  a  v a 2  s .c o m
        Log.d(TAG, "Set Burst to:" + burst);
        previewSize = cameraHolder.getSizeForPreviewDependingOnImageSize(
                cameraHolder.map.getOutputSizes(ImageFormat.YUV_420_888), cameraHolder.characteristics,
                mImageWidth, mImageHeight);
        if (cameraUiWrapper.getFocusPeakProcessor() != null) {
            cameraUiWrapper.getFocusPeakProcessor().kill();
        }
        int sensorOrientation = cameraHolder.characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
        int orientation = 0;
        switch (sensorOrientation) {
        case 90:
            orientation = 0;
            break;
        case 180:
            orientation = 90;
            break;
        case 270:
            orientation = 180;
            break;
        case 0:
            orientation = 270;
            break;
        }
        cameraHolder.CaptureSessionH.SetTextureViewSize(previewSize.getWidth(), previewSize.getHeight(),
                orientation, orientation + 180, false);
        SurfaceTexture texture = cameraHolder.CaptureSessionH.getSurfaceTexture();
        texture.setDefaultBufferSize(previewSize.getWidth(), previewSize.getHeight());
        previewsurface = new Surface(texture);

        cameraUiWrapper.getFocusPeakProcessor().Reset(previewSize.getWidth(), previewSize.getHeight());
        Log.d(TAG, "Previewsurface vailid:" + previewsurface.isValid());
        cameraUiWrapper.getFocusPeakProcessor().setOutputSurface(previewsurface);
        camerasurface = cameraUiWrapper.getFocusPeakProcessor().getInputSurface();
        cameraHolder.CaptureSessionH.AddSurface(camerasurface, true);

        if (picFormat.equals(KEYS.JPEG))
            mImageReader = ImageReader.newInstance(mImageWidth, mImageHeight, ImageFormat.JPEG, burst + 1);
        else if (picFormat.equals(CameraHolderApi2.RAW10))
            mImageReader = ImageReader.newInstance(mImageWidth, mImageHeight, ImageFormat.RAW10, burst + 1);
        else if (picFormat.equals(CameraHolderApi2.RAW_SENSOR))
            mImageReader = ImageReader.newInstance(mImageWidth, mImageHeight, ImageFormat.RAW_SENSOR,
                    burst + 1);
        else if (picFormat.equals(CameraHolderApi2.RAW12))
            mImageReader = ImageReader.newInstance(mImageWidth, mImageHeight, ImageFormat.RAW12, burst + 1);
        cameraHolder.CaptureSessionH.AddSurface(mImageReader.getSurface(), false);
        cameraHolder.CaptureSessionH.CreateCaptureSession();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    if (parameterHandler.Burst != null)
        parameterHandler.Burst.ThrowCurrentValueChanged(parameterHandler.Burst.GetValue());
}

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