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fix build error, add c# wrapper class

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This commit is contained in:
Tino Hager
2018-06-24 22:45:07 +02:00
parent 9ed3e2df4a
commit b2c03b1615
3 changed files with 90 additions and 6 deletions
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3
.gitignore vendored
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@ -14,7 +14,8 @@ convnet/
decaf/
submission/
cfg/
darknet
build/darknet/*
!build/darknet/YoloWrapper.cs
.fuse*
# OS Generated #

83
build/darknet/YoloWrapper.cs Normal file
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@ -0,0 +1,83 @@
using System;
using System.Runtime.InteropServices;
namespace Darknet
{
public class YoloWrapper : IDisposable
{
private const string YoloLibraryName = "yolo_cpp_dll.dll";
[DllImport(YoloLibraryName, EntryPoint = "init")]
public static extern int InitializeYolo(string configurationFilename, string weightsFilename, int gpu);
[DllImport(YoloLibraryName, EntryPoint = "detect_image")]
public static extern int DetectImage(string filename, ref BboxContainer container);
[DllImport(YoloLibraryName, EntryPoint = "detect_mat")]
public static extern int DetectImage(IntPtr pArray, int nSize, ref BboxContainer container);
[DllImport(YoloLibraryName, EntryPoint = "dispose")]
public static extern int DisposeYolo();
[StructLayout(LayoutKind.Sequential)]
public struct bbox_t
{
public UInt32 x, y, w, h; // (x,y) - top-left corner, (w, h) - width & height of bounded box
public float prob; // confidence - probability that the object was found correctly
public UInt32 obj_id; // class of object - from range [0, classes-1]
public UInt32 track_id; // tracking id for video (0 - untracked, 1 - inf - tracked object)
public UInt32 frames_counter;
};
[StructLayout(LayoutKind.Sequential, Size = 10)]
public struct BboxContainer
{
[MarshalAs(UnmanagedType.ByValArray, SizeConst = 10)]
public bbox_t[] candidates;
}
public YoloWrapper(string configurationFilename, string weightsFilename, int gpu)
{
InitializeYolo(configurationFilename, weightsFilename, gpu);
}
public void Dispose()
{
DisposeYolo();
}
public bbox_t[] Detect(string filename)
{
var container = new BboxContainer();
var count = DetectImage(filename, ref container);
return container.candidates;
}
public bbox_t[] Detect(byte[] imageData)
{
var container = new BboxContainer();
var size = Marshal.SizeOf(imageData[0]) * imageData.Length;
var pnt = Marshal.AllocHGlobal(size);
try
{
// Copy the array to unmanaged memory.
Marshal.Copy(imageData, 0, pnt, imageData.Length);
DetectImage(pnt, imageData.Length, ref container);
}
catch (Exception exception)
{
return null;
}
finally
{
// Free the unmanaged memory.
Marshal.FreeHGlobal(pnt);
}
return container.candidates;
}
}
}

10
src/yolo_v2_class.hpp
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@ -45,11 +45,11 @@ struct bbox_t_container {
#include "opencv2/imgproc/imgproc_c.h" // C
#endif // OPENCV
extern "C" __declspec(dllexport) int max_objects();
extern "C" __declspec(dllexport) int init(const char *configurationFilename, const char *weightsFilename, int gpu);
extern "C" __declspec(dllexport) int detect_image(const char *filename, bbox_t_container &container);
extern "C" __declspec(dllexport) int detect_mat(const uint8_t* data, const size_t data_length, bbox_t_container &container);
extern "C" __declspec(dllexport) int dispose();
extern "C" YOLODLL_API int max_objects();
extern "C" YOLODLL_API int init(const char *configurationFilename, const char *weightsFilename, int gpu);
extern "C" YOLODLL_API int detect_image(const char *filename, bbox_t_container &container);
extern "C" YOLODLL_API int detect_mat(const uint8_t* data, const size_t data_length, bbox_t_container &container);
extern "C" YOLODLL_API int dispose();
class Detector {
std::shared_ptr<void> detector_gpu_ptr;