Hi,
One of my apps uses mCamera.setPreviewCallback(this); and onPreviewFrame(
byte[] data, Camera camera) and its working OK on Nexus 5 with KRT16M build.
Also the demo code you provided does nothing with the data from
onPreviewFrame()
Regards
On Friday, November 8, 2013 11:15:20 AM UTC+11, Jon Sutherland wrote:
>
> There seems to be a problem on my Nexus 5 with KRT16M when taking a frame
> from the camera using android.hardware.Camera setOneShotPreviewCallback.
> The camera preview goes dark and the frame saved is always dark. After
> the call happens the preview stays dark. This is a real problem since the
> saved frames are so dark they're pretty useless. The code below
> demonstrates the problem and runs fine on every other device I've tried.
> It seems like a legitimate problem. Unless anyone has an answer I'm going
> to file a bug soon.
>
> public class MainActivity extends Activity implements
> SurfaceTextureListener {
>
> private Camera mCamera;
> private TextureView mTextureView;
>
> @Override
> protected void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
>
> mTextureView = new TextureView(this);
> mTextureView.setSurfaceTextureListener(this);
>
> setContentView(mTextureView);
>
> }
>
> @Override
> public void onSurfaceTextureAvailable(SurfaceTexture surface, int width,
> int height) {
> mCamera = Camera.open();
>
> Camera.Size previewSize = mCamera.getParameters().getPreviewSize();
> mTextureView.setLayoutParams(new FrameLayout.LayoutParams(
> previewSize.width, previewSize.height, Gravity.CENTER));
>
> try {
> mCamera.setPreviewTexture(surface);
> } catch (IOException t) {
> }
>
> mCamera.startPreview();
>
> Handler handler = new Handler();
> handler.postDelayed(new Runnable() {
> @Override
> public void run() {
> mCamera.setOneShotPreviewCallback(new PreviewCallback() {
> @Override
> public void onPreviewFrame(byte[] data, Camera camera) {
>
> }
> });
> }
> }, 5000);
> handler.postDelayed(new Runnable() {
> @Override
> public void run() {
> mCamera.stopPreview();
> }
> }, 10000);
> handler.postDelayed(new Runnable() {
> @Override
> public void run() {
> mCamera.startPreview();
> }
> }, 15000);
> }
>
> @Override
> public void onSurfaceTextureSizeChanged(SurfaceTexture surface, int width,
> int height) {
> }
>
> @Override
> public boolean onSurfaceTextureDestroyed(SurfaceTexture surface) {
> mCamera.stopPreview();
> mCamera.release();
> return true;
> }
>
> @Override
> public void onSurfaceTextureUpdated(SurfaceTexture surface) {
> }
> }
>
>
>
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