api中有个tuple结构体参数,不知道如何定义

popdes · 发表于 2018-3-27 00:18:41

研究halcon的dll的时候有个tuple参数,一直搞不通,希望谁给指点下:
在halcon的有.h头文件定义这个tuple如下:

typedef void* VOIDP;
/*****************************************************************************/
/* Parameter passing (Control parameters) */
/*****************************************************************************/
#define UNDEF_PAR 0 /* Parameter type: no defined type */
#define LONG_PAR 1 /* Parameter type: long */
#define HANDLE_PAR LONG_PAR /* Parameter type: long */
#define FLOAT_PAR 2 /* Parameter type: float */
#define STRING_PAR 4 /* Parameter type: string */
/* Possible parameter types for a single element: */
#define ANY_ELEM (LONG_PAR|FLOAT_PAR|STRING_PAR)
#define INT_PAR LONG_PAR /* Parameter type: int */
#define DOUBLE_PAR FLOAT_PAR /* Parameter type: double */
#define MIXED_PAR 8 /* Parameter type: Hcpar */
#define MAX_TUPLE_TYPE MIXED_PAR/* maximum type number */
/* Possible parameter types for a tuple: */
#define ANY_TUPLE (LONG_PAR|FLOAT_PAR|STRING_PAR|MIXED_PAR)
/* 16 reserved */
/* 32 reserved */
#define POINTER_PAR 64 /* Parameter type: pointer to any type */
#define TUPLE_PAR 128 /* Parameter type: pointer to tuple */
#define MAX_PAR MIXED_PAR
/*****************************************************************************/
/* Constants and basic types */
/*****************************************************************************/
#define MAX_TUPLE_LENGTH 1000000 /* max. length of a tuple */
#define MAX_STRING 1024 /* max. length of a string */
typedef UINT4 Herror; /* Type function values (error messages) */
typedef long *Hkey; /* primary key in DB (for iconic objects) */
#define UNDEF_KEY (Hkey)(0) /* Undefined iconic object */
/*****************************************************************************/
/* Structures for passing parameters between language interface and core */
/*****************************************************************************/
#ifndef HC_NO_STRUCT_MEMBER_ALIGNMENT
/* sets the struct member alignment to avoid problems if
* the settings of the user differ to those of the HALCON
* version. (8 is the default alignment, generally) */
# pragma pack(push,8)
#endif
typedef union
{
INT4_8 l; /* 4/8 byte integer (input) */
double d; /* 8 byte real (input) */
char *s; /* pointer to strings (input) */
double f; /* 8 byte real (legacy 11.0) (input) */
} Hpar; /* parameter passing for the C interface */
typedef union
{
INT4_8 *l; /* 4/8 byte integer (output) */
double *d; /* 8 byte real, (output) */
char *s; /* pointer to strings (output) */
VOIDP p; /* pointer to var. of any type (e.g. tuple)(output)*/
double *f; /* 8 byte real, (legacy 11.0) (output) */
} Hvar; /* parameter passing for the C interface */
typedef struct
{
Hpar par; /* values */
HINT type; /* type flag */
} Hcpar; /* parameter passing for the C interface */
typedef struct
{
Hvar var; /* values */
HINT type; /* type flag */
} Hcvar; /* parameter passing for the C interface */
typedef union {
INT4_8 *l;
double *d;
char **s;
Hcpar *cpar;
} Hcelem; /* pure type array */
typedef struct HCTUPLE
{
Hpar val;
HINT type;
char pad[sizeof(Hcpar)-sizeof(Hpar)-sizeof(HINT)]; /* padding for data
* structure alignement to enable val and type
* to get used as Hcpar structure */
INT4_8 num; /* number of set array elements */
INT4_8 capacity; /* allocated array length */
HINT free; /* free array elem when destroying tuple? */
Hcelem elem; /* the actual array */
} Hctuple;
#define HCTUPLE_INITIALIZER {{0},UNDEF_PAR,{0},0,0,0,{NULL}}
typedef struct
{
Hcvar *variables; /* variables (of application) to write back values */
Hcpar *element; /* tuple element(s) */
INT4_8 num_el; /* number of used elements */
INT4_8 length; /* total length of array (incl. unused elements) */
} Hcvtuple; /* for passing control parameter variables from */
//这里就是那个tuple的结构体
typedef struct /* Tuple representation */
{
Hcpar *tuple;
INT_PTR length;
} Htuple;

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于是,我把这个结构体写成class模式来定义:

class Htuple{
struct tuple ={
union par ={
INT l ; /* 4/8 byte integer (input) */
double d; /* 8 byte real (input) */
string s; /* pointer to strings (input) */
float f; /* 8 byte real (legacy 11.0) (input) */
} ;
INT type;
};
addr length;
}

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调用dll, 声明函数api
然后实例化之后,调用

dll = ..raw.loadDll("\res\halconc.dll","AArHalconC","cdecl");
T_tuple_type= dll.api("T_tuple_type","int(struct T, pointer& Type)");
Htuples = Htuple();
var retapp = raw.realloc(1000);
var ret,TupleType = T_tuple_type (Htuples, retapp);
console.dump(ret,TupleType)

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这里运行就会提示:存储保护异常..

还在继续测试其他方法, 有进展此贴会后续更新 , 希望懂静态调用的给提点一下
关于tuple的在线文档: http://www.mvtec.com/doc/halcon/13/en/tuple_type.html

工程下载地址: https://pan.baidu.com/s/19PlTCUTAfCrGUl_1IjNjxA

JacenHe · 发表于 2018-3-27 12:31:53

C++的类型别名成千上万，但实际上真实的类型就那么几个，
你可以用C++开发环境打开他的C++工程，然后跳转到函数定义、或者类型定义看他使用的真实类型。

你的Htuple声明显然是错的，他的成员是2个指针，指针应当声明为pointer，建议你还是先看一下帮助文档再说。
另外你那个 raw.realloc(1000)也用的莫名其妙，pointer& 指向的是指针的指针，一般这种参数只要传入null，不需要自己分配内存，这些在文档上都有介绍的。

如果你实在搞不清楚，可以换个思路，用C++写个DLL，然后再调用这个DLL你总会吧。
不会翻译这些头文件的话，其实也没有必要去翻译。

popdes · 发表于 2018-3-29 00:48:04

谢谢Jacen回复.
搞定了.
原来dll中是有这么个函数可以操作tuple的,包含了创建/设置/销毁.....
简单的tuple操作示例如下:

import console
console.open()
dll = ..raw.loadDll("\res\halconc.dll","AArHalconC","cdecl");
F_create_tuple= dll.api("F_create_tuple","void(pointer& T, int length)");
F_create_tuple_i= dll.api("F_create_tuple_i","void(pointer T, int val)");
F_create_tuple_s=dll.api("F_create_tuple_s","void(pointer T, string val)");
F_get_s=dll.api("F_get_s","string(pointer T, int index)");
F_set_s=dll.api("F_set_s","void(pointer T, string val,int index)");
F_get_i=dll.api("F_get_i","int(pointer T, int index)");
var ctup = raw.buffer(1000);
F_create_tuple(ctup,5);
//console.varDump(ctup)
//F_create_tuple_i(ctup,5);
//F_create_tuple_s(ctup,"abcde");
console.varDump(ctup)
F_set_s(ctup,"abc",0);
F_set_s(ctup,"def",1);
F_set_s(ctup,"ghi",2);
F_set_s(ctup,"jkl",3);
F_set_s(ctup,"mnu",4);
var ret = F_get_s(ctup,2);
console.varDump(ret)
var ret = F_get_s(ctup,1);
console.varDump(ret)
F_set_s(ctup,"hahabb",1);
var ret = F_get_s(ctup,1);
console.varDump(ret)
var ret = F_get_s(ctup,4);
console.varDump(ret)
console.pause(true);

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终于可以愉快的玩耍了.O(∩_∩)O

popdes · 发表于 2018-3-29 22:00:30

昨天说tuple可以利用dll里面的函数进行赋值和操作了.
今天直接拿来放到了上次分享的那个画边界圆的示例里,
发现还是不能正确使用.╮(╯▽╰)╭
这次应该不是tuple参数错误了,估计应该是api调用错误, 试了好几种想法,都不行,吐血..

希望有研究这方面的朋友帮忙给看下, 我也会继续各种测试 , 如果解决了会第一时间更新帖子

import win.ui;
/*DSG{{*/
mainForm = win.form(text="Halcon函数circle测试";right=833;bottom=525)
mainForm.add(
button={cls="button";text="button";left=9;top=9;right=170;bottom=59;z=2};
picturebox={cls="picturebox";left=182;top=0;right=834;bottom=526;bgcolor=8421376;z=1};
snumber={cls="static";text="0";left=18;top=397;right=150;bottom=433;font=LOGFONT(h=-21);transparent=1;z=3}
)
/*}}*/
import console;
var dll = ..raw.loadDll("\res\halconc.dll","halconlib","cdecl");
open_window= dll.api("open_window","int(int Row, int Column, int Width, int Height, int FatherWindow, string Mode, string Machine, int& WindowHandle)");
read_image= dll.api("read_image","int(ADDR& Image, string FileName)");
get_image_size= dll.api("get_image_size","int(ADDR Image, int& Width, int& Height)");
disp_obj= dll.api("disp_obj","int(ADDR Object, int WindowHandle)");
fast_threshold= dll.api("fast_threshold","int(ADDR Image, ADDR& Region, double MinGray, double MaxGray, int MinSize)");
disp_region= dll.api("disp_region","int(ADDR DispRegions, int WindowHandle)");
set_colored= dll.api("set_colored","int(int WindowHandle, int NumberOfColors)");
set_color= dll.api("set_color","int(int WindowHandle, string Color)");
boundary= dll.api("boundary","int(ADDR Region, ADDR& RegionBorder, string BoundaryType)");
clip_region_rel= dll.api("clip_region_rel","int(ADDR Region, ADDR& RegionClipped, int Top, int Bottom, int Left, int Right)");
dilation_circle= dll.api("dilation_circle","int(ADDR Region, ADDR& RegionDilation, double Radius)");
reduce_domain= dll.api("reduce_domain","int(ADDR Image, ADDR Region, ADDR& ImageReduced)");
edges_sub_pix= dll.api("edges_sub_pix","int(ADDR Image, ADDR& Edges, string Filter, double Alpha, int Low, int High)");
segment_contours_xld= dll.api("segment_contours_xld","int(ADDR Contours, ADDR& ContoursSplit, string Mode, int SmoothCont, double MaxLineDist1, double MaxLineDist2)");
count_obj= dll.api("count_obj","int(ADDR Objects, int& Number)");
set_draw= dll.api("set_draw","int(int WindowHandle, string Mode)");
select_obj= dll.api("select_obj","int(ADDR Objects, ADDR& ObjectSelected, int Index)");
//主要是下面这个函数
T_get_contour_global_attrib_xld= dll.api("T_get_contour_global_attrib_xld","int(ADDR Contour, pointer Name, pointer Attrib)");
fit_circle_contour_xld= dll.api("fit_circle_contour_xld","int(ADDR Contours, string Algorithm, int MaxNumPoints, double MaxClosureDist, int ClippingEndPoints, int Iterations, double ClippingFactor, double& Row, double& Column, double& Radius, double& StartPhi, double& EndPhi, string& PointOrder)");
gen_circle_contour_xld= dll.api("gen_circle_contour_xld","int(ADDR& ContCircle, double Row, double Column, double Radius, double StartPhi, double EndPhi, string PointOrder, double Resolution)");
set_line_width= dll.api("set_line_width","int(int WindowHandle, double Width)");
//下面是对tuple的一些操作
F_create_tuple= dll.api("F_create_tuple","void(pointer T, int length)");
F_create_tuple_i= dll.api("F_create_tuple_i","void(pointer T, int val)");
F_create_tuple_s=dll.api("F_create_tuple_s","void(pointer T, string val)");
F_get_s=dll.api("F_get_s","string(pointer T, int index)");
F_set_s=dll.api("F_set_s","void(pointer T, string val,int index)");
F_get_i=dll.api("F_get_i","int(pointer T, int index)");
F_create_tuple_d=dll.api("F_create_tuple_d","void(pointer T, double val)");
F_create_tuple_type=dll.api("F_create_tuple_type","void(pointer T, int length, int type)");
F_destroy_tuple=dll.api("F_destroy_tuple","void(pointer T)");
console.open();
mainForm.button.oncommand = function(id,event){
var ret,Image = read_image(0,"res/double_circle");
var ret,width,height = get_image_size(Image,0,0);
var ret,Hwindow = open_window(0,0,width,height,mainForm.picturebox.hwnd,"visible", "",0);
var ret = disp_obj(Image,Hwindow);
//win.delay(1000)
var ret,Region = fast_threshold(Image,0,0,120,7);
set_colored(Hwindow,6);
disp_region(Region,Hwindow)
//win.delay(1000)
var ret,RegionBorder = boundary(Region,0,"inner");
var ret,RegionClipped = clip_region_rel(RegionBorder,0,5,5,5,5);
var ret,RegionDilation = dilation_circle(RegionClipped,0,2.5);
var ret,ImageReduced = reduce_domain(Image,RegionDilation,0);
var ret = disp_obj(ImageReduced,Hwindow);
//win.delay(1000)
var ret,Edges = edges_sub_pix(ImageReduced,0,"canny",2,20,60);
var ret = disp_obj(Edges,Hwindow);
//win.delay(1000)
var ret,ContoursSplit = segment_contours_xld(Edges,0,"lines_circles",5,4,3);
//var ret = disp_obj(ContoursSplit,Hwindow);
var ret = disp_obj(Image,Hwindow);
var ret,Number = count_obj(ContoursSplit,0);
//mainForm.snumber.text = Number;
set_draw(Hwindow,"margin");
set_color(Hwindow,"orange red");
set_line_width(Hwindow,4.0);
console.log("开始循环")
win.delay(1000)
for(i=1;Number;1){
var ret,ObjectSelected = select_obj(ContoursSplit,0,i);
//这里定义了需要使用的tuple元组
var nametuple = raw.buffer(100);
F_create_tuple_s(nametuple,"cont_approx");
var Attribtuple = raw.buffer(100);
F_create_tuple(Attribtuple,0);
F_destroy_tuple(Attribtuple);
//var Patt = raw.toPointer(Attribtuple)
console.log("第"++i++"次循环开始")
win.delay(1000)
//下面这个引用函数老是报错: raw callback 内存错误
var ret,Attrib = T_get_contour_global_attrib_xld(ObjectSelected,nametuple,Attribtuple);
//if(Attrib > 0){
console.log("第"++i++"次循环结束")
win.delay(1000)
//}
}
}
mainForm.enableDpiScaling();
mainForm.show();
return win.loopMessage();

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工程下载地址: https://pan.baidu.com/s/19PlTCUTAfCrGUl_1IjNjxA

popdes · 发表于 2018-3-31 01:05:50

为了判断是不是第三个参数错误导致的, 我增加了一个包含tuple参数的dll函数进行测试

T_query_contour_global_attribs_xld= dll.api("T_query_contour_global_attribs_xld","int(ADDR Contour, pointer Attrib)");

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上面的函数是: Return the names of the defined global attributes of an XLD contour
即: 返回定义的全局属性名称
于是,我将主要代码更改为:

for(i=1;Number;1){
var ret,ObjectSelected = select_obj(ContoursSplit,0,i);
//这里定义了需要使用的tuple元组
var Attribtuple = raw.buffer(1000);
F_create_tuple(Attribtuple,0);
console.log("第"++i++"次循环开始")
win.delay(1000)
T_query_contour_global_attribs_xld(ObjectSelected,Attribtuple);
var ret = Mlength_tuple(Attribtuple);
console.varDump(ret)
var ret = F_get_s(Attribtuple,0)
console.varDump(ret)
win.delay(1000)
console.log("第"++i++"次循环结束")
}

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运行发现, 完全可以获取到这个全局属性名, 说明作为输出参数 (pointer Attrib) 这样声明是没有问题的
那么如果我把F_create_tuple(Attribtuple,0);这句话也注释掉,会怎样呢?
结果是, 还是可以正确获取到, 那么说明dll声明里为pointer的输出类型的话, 是不需要对指针进行强制tuple转换的,
也就是说, 我们前面那个函数报内存错误, 不是由于第三个参数导致的.
而且, 那个函数的第三个参数声明, 同样也应该是pointer , 使用的时候只需定义为raw.buff()指针即可.

那么, 上面的函数报内存错误, 就是第二个函数引起的了.
缩小了排查范围.
明天继续测试, 希望能找到解决办法.

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