Example usage for android.hardware Camera setPreviewTexture

Introduction

In this page you can find the example usage for android.hardware Camera setPreviewTexture.

Prototype

public native final void setPreviewTexture(SurfaceTexture surfaceTexture) throws IOException;

Source Link

Document

Sets the SurfaceTexture to be used for live preview.

Usage

From source file:com.ezartech.ezar.videooverlay.ezAR.java

private void initCamera(Camera camera) {
    Camera.Parameters cameraParameters = camera.getParameters();

    defaultFocusMode = cameraParameters.getFocusMode();

    continousFocusSupported = cameraParameters.getSupportedFocusModes()
            .contains(Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
    focusAreaSupported = (cameraParameters.getMaxNumFocusAreas() > 0
            && Util.isSupported(Parameters.FOCUS_MODE_AUTO, cameraParameters.getSupportedFocusModes()));
    meteringAreaSupported = (cameraParameters.getMaxNumMeteringAreas() > 0);
    aeLockSupported = cameraParameters.isAutoExposureLockSupported();
    awbLockSupported = cameraParameters.isAutoWhiteBalanceLockSupported();

    if (continousFocusSupported) {
        cameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
    } else if (Util.isSupported(Parameters.FOCUS_MODE_AUTO, cameraParameters.getSupportedFocusModes())) {
        cameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
    }//from w  ww .  jav  a  2 s  . co  m

    //      camera.enableShutterSound(true);  //requires api 17
    int camWidth = isPortraitOrientation() ? cameraView.getHeight() : cameraView.getWidth();
    int camHt = isPortraitOrientation() ? cameraView.getWidth() : cameraView.getHeight();
    previewSizePair = selectSizePair(cameraParameters.getPreferredPreviewSizeForVideo(),
            cameraParameters.getSupportedPreviewSizes(), cameraParameters.getSupportedPictureSizes(), camWidth,
            camHt);

    Log.d(TAG, "preview size: " + previewSizePair.previewSize.width + ":" + previewSizePair.previewSize.height);

    cameraParameters.setPreviewSize(previewSizePair.previewSize.width, previewSizePair.previewSize.height);

    //commenting out; not used now
    //Camera.Size picSize = previewSizePair.pictureSize != null ? previewSizePair.pictureSize : previewSizePair.previewSize;
    //cameraParameters.setPictureSize(picSize.width,picSize.height);
    //Log.d(TAG, "picture size: " + picSize.width + ":" + picSize.height);

    camera.setParameters(cameraParameters);

    try {
        if (cameraView.getSurfaceTexture() != null) {
            camera.setPreviewTexture(cameraView.getSurfaceTexture());
        }
    } catch (IOException e) {
        Log.e(TAG, "Unable to attach preview to camera!", e);
    }
}

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