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android: fix JavaCamera2View UV plane handling

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This commit is contained in:
Alexander Alekhin 2019-05-07 22:37:25 +00:00
parent b998c06d08
commit 8936a0f3a5
1 changed files with 14 additions and 3 deletions
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17
modules/java/generator/android-21/java/org/opencv/android/JavaCamera2View.java
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@ -341,11 +341,22 @@ public class JavaCamera2View extends CameraBridgeViewBase {
if (chromaPixelStride == 2) { // Chroma channels are interleaved
assert(planes[0].getPixelStride() == 1);
assert(planes[2].getPixelStride() == 2);
ByteBuffer y_plane = planes[0].getBuffer();
ByteBuffer uv_plane = planes[1].getBuffer();
ByteBuffer uv_plane1 = planes[1].getBuffer();
ByteBuffer uv_plane2 = planes[2].getBuffer();
Mat y_mat = new Mat(h, w, CvType.CV_8UC1, y_plane);
Mat uv_mat = new Mat(h / 2, w / 2, CvType.CV_8UC2, uv_plane);
Imgproc.cvtColorTwoPlane(y_mat, uv_mat, mRgba, Imgproc.COLOR_YUV2RGBA_NV21);
Mat uv_mat1 = new Mat(h / 2, w / 2, CvType.CV_8UC2, uv_plane1);
Mat uv_mat2 = new Mat(h / 2, w / 2, CvType.CV_8UC2, uv_plane2);
long addr_diff = uv_mat2.dataAddr() - uv_mat1.dataAddr();
if (addr_diff > 0) {
assert(addr_diff == 1);
Imgproc.cvtColorTwoPlane(y_mat, uv_mat1, mRgba, Imgproc.COLOR_YUV2RGBA_NV12);
} else {
assert(addr_diff == -1);
Imgproc.cvtColorTwoPlane(y_mat, uv_mat2, mRgba, Imgproc.COLOR_YUV2RGBA_NV21);
}
return mRgba;
} else { // Chroma channels are not interleaved
byte[] yuv_bytes = new byte[w*(h+h/2)];