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Merge pull request #26656 from warped-rudi:mediandk

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AndroidMediaNdkCapture pixel format enhancement #26656

### Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [ ] The PR is proposed to the proper branch
- [ x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake
This commit is contained in:
Rüdiger Ihle
2024-12-30 09:09:11 +01:00
committed by GitHub
parent 9c33baebbd
commit d39aae6bdf
3 changed files with 101 additions and 34 deletions
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modules/java/generator/android-24/java/org/opencv/android/NativeCameraView.java
+9 -12
View File
@@ -2,6 +2,7 @@ package org.opencv.android;
import org.opencv.core.Mat;
import org.opencv.core.Size;
import org.opencv.core.MatOfInt;
import org.opencv.imgproc.Imgproc;
@@ -123,8 +124,11 @@ public class NativeCameraView extends CameraBridgeViewBase {
return false;
}
MatOfInt params = new MatOfInt(Videoio.CAP_PROP_FRAME_WIDTH, width,
Videoio.CAP_PROP_FRAME_HEIGHT, height);
Log.d(TAG, "Try to open camera with index " + localCameraIndex);
mCamera = new VideoCapture(localCameraIndex, Videoio.CAP_ANDROID);
mCamera = new VideoCapture(localCameraIndex, Videoio.CAP_ANDROID, params);
if (mCamera == null)
return false;
@@ -139,9 +143,6 @@ public class NativeCameraView extends CameraBridgeViewBase {
mFrame = new RotatedCameraFrame(new NativeCameraFrame(mCamera), frameRotation);
mCamera.set(Videoio.CAP_PROP_FRAME_WIDTH, width);
mCamera.set(Videoio.CAP_PROP_FRAME_HEIGHT, height);
if (frameRotation % 180 == 0) {
mFrameWidth = (int) mCamera.get(Videoio.CAP_PROP_FRAME_WIDTH);
mFrameHeight = (int) mCamera.get(Videoio.CAP_PROP_FRAME_HEIGHT);
@@ -181,10 +182,9 @@ public class NativeCameraView extends CameraBridgeViewBase {
@Override
public Mat rgba() {
mCapture.set(Videoio.CAP_PROP_FOURCC, VideoWriter.fourcc('R','G','B','3'));
mCapture.retrieve(mBgr);
Log.d(TAG, "Retrived frame with size " + mBgr.cols() + "x" + mBgr.rows() + " and channels: " + mBgr.channels());
Imgproc.cvtColor(mBgr, mRgba, Imgproc.COLOR_RGB2RGBA);
mCapture.set(Videoio.CAP_PROP_FOURCC, VideoWriter.fourcc('R','G','B','4'));
mCapture.retrieve(mRgba);
Log.d(TAG, "Retrieved frame with size " + mRgba.cols() + "x" + mRgba.rows() + " and channels: " + mRgba.channels());
return mRgba;
}
@@ -192,7 +192,7 @@ public class NativeCameraView extends CameraBridgeViewBase {
public Mat gray() {
mCapture.set(Videoio.CAP_PROP_FOURCC, VideoWriter.fourcc('G','R','E','Y'));
mCapture.retrieve(mGray);
Log.d(TAG, "Retrived frame with size " + mGray.cols() + "x" + mGray.rows() + " and channels: " + mGray.channels());
Log.d(TAG, "Retrieved frame with size " + mGray.cols() + "x" + mGray.rows() + " and channels: " + mGray.channels());
return mGray;
}
@@ -200,20 +200,17 @@ public class NativeCameraView extends CameraBridgeViewBase {
mCapture = capture;
mGray = new Mat();
mRgba = new Mat();
mBgr = new Mat();
}
@Override
public void release() {
if (mGray != null) mGray.release();
if (mRgba != null) mRgba.release();
if (mBgr != null) mBgr.release();
}
private VideoCapture mCapture;
private Mat mRgba;
private Mat mGray;
private Mat mBgr;
};
private class CameraWorker implements Runnable {