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add opencv4 into the dependency list for ROS2 #324

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merged 2 commits into from
Apr 30, 2020
Merged

add opencv4 into the dependency list for ROS2 #324

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aa56a1e
add opencv4 into the dependency list.
LewisLiuPub Apr 8, 2020
e8c1d37
update CMakefile for automatically selecting openCV4 or openCV3 judgi…
LewisLiuPub Apr 8, 2020
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2 changes: 1 addition & 1 deletion cv_bridge/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -37,7 +37,7 @@ else()
endif()

find_package(sensor_msgs REQUIRED)
find_package(OpenCV 3 REQUIRED
find_package(OpenCV 4 REQUIRED
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This line force to OpenCV4 , there is no option for version 3.

You should do something like:

find_package(OpenCV 4 QUIET opencv_core opencv_core)
if(NOT OpenCV_FOUND)
  find_package(OpenCV 3 REQUIRED opencv_core opencv_core)
endif()

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It really works, I checked it and uploaded one new patch.
@ahcorde

COMPONENTS
opencv_core
opencv_imgproc
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10 changes: 7 additions & 3 deletions cv_bridge/src/CMakeLists.txt
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Expand Up @@ -44,10 +44,14 @@ if(PYTHON_VERSION_MAJOR VERSION_EQUAL 3)
add_definitions(-DPYTHON3)
endif()

if(OpenCV_VERSION_MAJOR VERSION_EQUAL 3)
add_library(${PROJECT_NAME}_boost module.cpp module_opencv3.cpp)
else()
if(OpenCV_VERSION_MAJOR VERSION_EQUAL 4)
add_definitions(-DOPENCV_VERSION_4)
endif()

if(OpenCV_VERSION_MAJOR VERSION_LESS 3)
add_library(${PROJECT_NAME}_boost module.cpp module_opencv2.cpp)
else()
add_library(${PROJECT_NAME}_boost module.cpp module_opencv3.cpp)
endif()
target_link_libraries(${PROJECT_NAME}_boost
${PYTHON_LIBRARIES}
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9 changes: 7 additions & 2 deletions cv_bridge/src/module_opencv3.cpp
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Expand Up @@ -99,6 +99,11 @@ class NumpyAllocator : public MatAllocator
NumpyAllocator() {stdAllocator = Mat::getStdAllocator();}
~NumpyAllocator() {}

// To compile openCV3 with OpenCV4 APIs.
#ifndef OPENCV_VERSION_4
#define AccessFlag int
#endif

UMatData * allocate(PyObject * o, int dims, const int * sizes, int type, size_t * step) const
{
UMatData * u = new UMatData(this);
Expand All @@ -115,7 +120,7 @@ class NumpyAllocator : public MatAllocator
}

UMatData * allocate(
int dims0, const int * sizes, int type, void * data, size_t * step, int flags,
int dims0, const int * sizes, int type, void * data, size_t * step, AccessFlag flags,
UMatUsageFlags usageFlags) const
{
if (data != 0) {
Expand Down Expand Up @@ -148,7 +153,7 @@ class NumpyAllocator : public MatAllocator
return allocate(o, dims0, sizes, type, step);
}

bool allocate(UMatData * u, int accessFlags, UMatUsageFlags usageFlags) const
bool allocate(UMatData * u, AccessFlag accessFlags, UMatUsageFlags usageFlags) const
{
return stdAllocator->allocate(u, accessFlags, usageFlags);
}
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