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Merge pull request #8168 from jmgomezpoveda:issue_8166

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* Use the YV12 format in the Android emulator to avoid image issues

* Removed trailing spaces

* Added exception in else case

* Removed tab
This commit is contained in:
Jose Gómez 2017-03-03 13:44:11 +00:00 committed by Alexander Alekhin
parent 9a92777fc1
commit 6f39f9a6a0
1 changed files with 16 additions and 2 deletions
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14
modules/java/generator/src/java/android+JavaCameraView.java
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@ -41,6 +41,7 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
protected Camera mCamera;
protected JavaCameraFrame[] mCameraFrame;
private SurfaceTexture mSurfaceTexture;
private int mPreviewFormat = ImageFormat.NV21;
public static class JavaCameraSizeAccessor implements ListItemAccessor {
@ -145,7 +146,14 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
/* Select the size that fits surface considering maximum size allowed */
Size frameSize = calculateCameraFrameSize(sizes, new JavaCameraSizeAccessor(), width, height);
/* Image format NV21 causes issues in the Android emulators */
if (Build.BRAND.equalsIgnoreCase("generic") || Build.BRAND.equalsIgnoreCase("Android"))
params.setPreviewFormat(ImageFormat.YV12); // "generic" or "android" = android emulator
else
params.setPreviewFormat(ImageFormat.NV21);
mPreviewFormat = params.getPreviewFormat();
Log.d(TAG, "Set preview size to " + Integer.valueOf((int)frameSize.width) + "x" + Integer.valueOf((int)frameSize.height));
params.setPreviewSize((int)frameSize.width, (int)frameSize.height);
@ -303,7 +311,13 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
@Override
public Mat rgba() {
if (mPreviewFormat == ImageFormat.NV21)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGBA_NV21, 4);
else if (mPreviewFormat == ImageFormat.YV12)
Imgproc.cvtColor(mYuvFrameData, mRgba, Imgproc.COLOR_YUV2RGB_I420, 4); // COLOR_YUV2RGBA_YV12 produces inverted colors
else
throw new IllegalArgumentException("Preview Format can be NV21 or YV12");
return mRgba;
}