增加了旋转的控制

app/src/main/cpp/camera2/ndkcamera.cpp

@@ -718,9 +718,20 @@ void NdkCamera::on_image(const unsigned char* nv21, int nv21_width, int nv21_hei
     int w = 0;
     int h = 0;
     int rotate_type = 0;
+    const unsigned char* yuv420data = nv21;
     // TODO !!!???
     // int co = camera_orientation > 0 ? camera_orientation + 90 : camera_orientation;
-    int co = (camera_orientation + m_params.orientation * 90) % 360;
+    if (m_params.orientation != 0)
+    {
+        int co = 0;
+        if (camera_facing == ACAMERA_LENS_FACING_FRONT)
+        {
+            co = (camera_orientation - (m_params.orientation - 1) * 90 + 360) % 360;
+        }
+        else
+        {
+            co = (camera_orientation + (m_params.orientation - 1) * 90) % 360;
+        }
         // int co = 0;
         if (co == 0)
         {
@@ -747,36 +758,22 @@ void NdkCamera::on_image(const unsigned char* nv21, int nv21_width, int nv21_hei
             rotate_type = camera_facing == 0 ? 7 : 8;
         }
 
-#if 0
         cv::Mat nv21_rotated(h + h / 2, w, CV_8UC1);
         ncnn::kanna_rotate_yuv420sp(nv21, nv21_width, nv21_height, nv21_rotated.data, w, h, rotate_type);
-
-#ifdef _DEBUG
-    if (nv21_rotated.empty())
-    {
-        int aa = 0;
+        yuv420data = nv21_rotated.data;
     }
-#endif
-
-    // nv21_rotated to rgb
-    cv::Mat rgb(h, w, CV_8UC3);
-    // ncnn::yuv420sp2rgb(nv21_rotated.data, w, h, rgb.data);
-    ncnn::yuv420sp2rgb_nv12(nv21_rotated.data, w, h, rgb.data);
-#else
-
+    else
+    {
         w = nv21_width;
         h = nv21_height;
+    }
 
     // nv21_rotated to rgb
     cv::Mat rgb(h, w, CV_8UC3);
     // ncnn::yuv420sp2rgb(nv21_rotated.data, w, h, rgb.data);
-    ncnn::yuv420sp2rgb_nv12(nv21, w, h, rgb.data);
-#endif // 0
-    // cv::Mat rgb(h, w, CV_8UC3);
-    // ncnn::yuv420sp2rgb_nv12(nv21, w, h, rgb.data);
+    ncnn::yuv420sp2rgb_nv12(yuv420data, w, h, rgb.data);
 
     on_image(rgb);
-
 }
 
 void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureRequest* request, const ACameraMetadata* result)

app/src/main/res/values/orientations.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <string-array name="orientations">
+        <item>无旋转</item>
         <item>0°</item>
         <item>90°</item>
         <item>180°</item>