Merge pull request #233 from rainyl/mat-tostring

change Mat.toString(), better countNonZero

Author: rainyl

CMakeLists.txt

@@ -55,7 +55,7 @@ file(GLOB_RECURSE CPP_FILES
     # "${CMAKE_CURRENT_SOURCE_DIR}/src/stitching/*.cpp"
 )
 file(GLOB_RECURSE HEADER_FILES
-    "${CMAKE_CURRENT_SOURCE_DIR}/src/*.h"
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/**/*.h"
 )
 
 add_library(${LIBRARY_NAME} SHARED
@@ -68,7 +68,7 @@ target_include_directories(${LIBRARY_NAME} SYSTEM PUBLIC
 target_link_libraries(${LIBRARY_NAME} PRIVATE ${OpenCV_LIBS})
 
 set_target_properties(${LIBRARY_NAME} PROPERTIES
-    # PUBLIC_HEADER ${GOCV_HEADERS}
+    # PUBLIC_HEADER ${HEADER_FILES}
     OUTPUT_NAME ${LIBRARY_NAME}
     CXX_VISIBILITY_PRESET default
     C_VISIBILITY_PRESET default

ffigen/ffigen_core.yaml

@@ -38,6 +38,7 @@ functions:
     include:
       - "Mat_Flags"
       - "Mat_Type"
+      - "Mat_CountNonZero"
       - "Mat_IsContinuous"
       - "Mat_IsSubmatrix"
       - "Mat_Rows"
@@ -55,7 +56,6 @@ functions:
       # - ""
       # - ""
       # - ""
-      # - ""
 
   symbol-address:
     include:

lib/src/core/core.dart

@@ -294,13 +294,7 @@ Mat compare(InputArray src1, InputArray src2, int cmpop, {OutputArray? dst}) {
 ///
 /// For further details, please see:
 /// https://docs.opencv.org/master/d2/de8/group__core__array.html#gaa4b89393263bb4d604e0fe5986723914
-int countNonZero(Mat src) {
-  return cvRunArena<int>((arena) {
-    final p = arena<ffi.Int>();
-    ccore.Mat_CountNonZero(src.ref, p);
-    return p.value;
-  });
-}
+int countNonZero(Mat src) => ccore.Mat_CountNonZero(src.ref);
 
 /// CompleteSymm copies the lower or the upper half of a square matrix to its another half.
 ///

lib/src/core/mat.dart

@@ -334,11 +334,7 @@ class Mat extends CvStruct<cvg.Mat> {
   /// only for [channels] == 1
   int get countNoneZero {
     cvAssert(channels == 1, "countNoneZero only for channels == 1");
-    return cvRunArena<int>((arena) {
-      final p = arena<ffi.Int>();
-      cvRun(() => ccore.Mat_CountNonZero(ref, p));
-      return p.value;
-    });
+    return ccore.Mat_CountNonZero(ref);
   }
 
   //!SECTION - Properties
@@ -1352,7 +1348,8 @@ class Mat extends CvStruct<cvg.Mat> {
   }
 
   @override
-  String toString() => toFmtString();
+  String toString() => "Mat(addr=0x${ptr.address.toRadixString(16)}, "
+      "type=${type.asString()}, rows=$rows, cols=$cols, channels=$channels)";
 
   static final finalizer = OcvFinalizer<cvg.MatPtr>(ccore.addresses.Mat_Close);
 

lib/src/g/core.g.dart

@@ -1063,22 +1063,18 @@ class CvNativeCore {
   late final _Mat_CopyTo_Async = _Mat_CopyTo_AsyncPtr.asFunction<
       ffi.Pointer<CvStatus> Function(Mat, Mat, imp1.CvCallback_0)>();
 
-  ffi.Pointer<CvStatus> Mat_CountNonZero(
+  int Mat_CountNonZero(
     Mat src,
-    ffi.Pointer<ffi.Int> rval,
   ) {
     return _Mat_CountNonZero(
       src,
-      rval,
     );
   }
 
-  late final _Mat_CountNonZeroPtr = _lookup<
-      ffi.NativeFunction<
-          ffi.Pointer<CvStatus> Function(
-              Mat, ffi.Pointer<ffi.Int>)>>('Mat_CountNonZero');
-  late final _Mat_CountNonZero = _Mat_CountNonZeroPtr.asFunction<
-      ffi.Pointer<CvStatus> Function(Mat, ffi.Pointer<ffi.Int>)>();
+  late final _Mat_CountNonZeroPtr =
+      _lookup<ffi.NativeFunction<ffi.Int Function(Mat)>>('Mat_CountNonZero');
+  late final _Mat_CountNonZero =
+      _Mat_CountNonZeroPtr.asFunction<int Function(Mat)>(isLeaf: true);
 
   ffi.Pointer<CvStatus> Mat_DCT(
     Mat src,

src/core/core.cpp

@@ -1127,10 +1127,8 @@ CvStatus *Mat_CopyMakeBorder(
   END_WRAP
 }
 
-CvStatus *Mat_CountNonZero(Mat src, int *rval) {
-  BEGIN_WRAP
-  *rval = cv::countNonZero(*src.ptr);
-  END_WRAP
+int Mat_CountNonZero(Mat src) {
+  return cv::countNonZero(*src.ptr);
 }
 
 CvStatus *Mat_DCT(Mat src, Mat dst, int flags) {

src/core/core.h

@@ -280,7 +280,7 @@ CvStatus *Mat_ConvertScaleAbs(Mat src, Mat dst, double alpha, double beta);
 CvStatus *Mat_CopyMakeBorder(
     Mat src, Mat dst, int top, int bottom, int left, int right, int borderType, Scalar value
 );
-CvStatus *Mat_CountNonZero(Mat src, int *rval);
+int  Mat_CountNonZero(Mat src);
 CvStatus *Mat_DCT(Mat src, Mat dst, int flags);
 CvStatus *Mat_Determinant(Mat m, double *rval);
 CvStatus *Mat_DFT(Mat src, Mat dst, int flags, int nonzeroRows);