Files
FastDeploy/csharp/fastdeploy/vision/result.cs
chenjian f80d929b03 [C#] add c sharp apis for ppocr (#1405)
* add c sharp apis for ppocr

* add example

* fix accroding to test

* add ocr models

* fix

* update

* update
2023-02-28 19:49:33 +08:00

681 lines
24 KiB
C#

// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Collections.Generic;
using fastdeploy.types_internal_c;
namespace fastdeploy {
namespace vision {
public enum ResultType {
UNKNOWN_RESULT,
CLASSIFY,
DETECTION,
SEGMENTATION,
OCR,
MOT,
FACE_DETECTION,
FACE_ALIGNMENT,
FACE_RECOGNITION,
MATTING,
MASK,
KEYPOINT_DETECTION,
HEADPOSE
}
public class Mask {
public List<byte> data;
public List<long> shape;
public ResultType type;
public Mask() {
this.data = new List<byte>();
this.shape = new List<long>();
this.type = ResultType.MASK;
}
public override string ToString() {
string information = "Mask(" ;
int ndim = this.shape.Count;
for (int i = 0; i < ndim; i++) {
if (i < ndim - 1) {
information += this.shape[i].ToString() + ",";
} else {
information += this.shape[i].ToString();
}
}
information += ")\n";
return information;
}
}
public class ClassifyResult {
public List<int> label_ids;
public List<float> scores;
public ResultType type;
public ClassifyResult() {
this.label_ids = new List<int>();
this.scores = new List<float>();
this.type = ResultType.CLASSIFY;
}
public string ToString() {
string information;
information = "ClassifyResult(\nlabel_ids: ";
for (int i = 0; i < label_ids.Count; i++) {
information = information + label_ids[i].ToString() + ", ";
}
information += "\nscores: ";
for (int i = 0; i < scores.Count; i++) {
information = information + scores[i].ToString() + ", ";
}
information += "\n)";
return information;
}
}
public class DetectionResult {
public List<float[]> boxes;
public List<float> scores;
public List<int> label_ids;
public List<Mask> masks;
public bool contain_masks;
public ResultType type;
public DetectionResult() {
this.boxes = new List<float[]>();
this.scores = new List<float>();
this.label_ids = new List<int>();
this.masks = new List<Mask>();
this.contain_masks = false;
this.type = ResultType.DETECTION;
}
public string ToString() {
string information;
if (!contain_masks) {
information = "DetectionResult: [xmin, ymin, xmax, ymax, score, label_id]\n";
} else {
information =
"DetectionResult: [xmin, ymin, xmax, ymax, score, label_id, mask_shape]\n";
}
for (int i = 0; i < boxes.Count; i++) {
information = information + boxes[i][0].ToString() + "," +
boxes[i][1].ToString() + ", " + boxes[i][2].ToString() +
", " + boxes[i][3].ToString() + ", " +
scores[i].ToString() + ", " + label_ids[i].ToString();
if (!contain_masks) {
information += "\n";
} else {
information += ", " + masks[i].ToString();
}
}
return information;
}
}
public class OCRResult {
public List<int[]> boxes;
public List<string> text;
public List<float> rec_scores;
public List<float> cls_scores;
public List<int> cls_labels;
public ResultType type;
public OCRResult() {
this.boxes = new List<int[]>();
this.text = new List<string>();
this.rec_scores = new List<float>();
this.cls_scores = new List<float>();
this.cls_labels = new List<int>();
this.type = ResultType.OCR;
}
public string ToString() {
string no_result = "";
if (boxes.Count > 0) {
string information = "";
for (int n = 0; n < boxes.Count; n++) {
information = information + "det boxes: [";
for (int i = 0; i < 4; i++) {
information = information + "[" + boxes[n][i * 2].ToString() + "," +
boxes[n][i * 2 + 1].ToString() + "]";
if (i != 3) {
information = information + ",";
}
}
information = information + "]";
if (rec_scores.Count > 0) {
information = information + "rec text: " + text[n] + " rec score:" +
rec_scores[n].ToString() + " ";
}
if (cls_labels.Count > 0) {
information = information + "cls label: " + cls_labels[n].ToString() +
" cls score: " + cls_scores[n].ToString();
}
information = information + "\n";
}
return information;
} else if (boxes.Count == 0 && rec_scores.Count > 0 &&
cls_scores.Count > 0) {
string information="";
for (int i = 0; i < rec_scores.Count; i++) {
information = information + "rec text: " + text[i] + " rec score:" +
rec_scores[i].ToString() + " ";
information = information + "cls label: " + cls_labels[i].ToString() +
" cls score: " + cls_scores[i].ToString();
information = information + "\n";
}
return information;
} else if (boxes.Count == 0 && rec_scores.Count == 0 &&
cls_scores.Count > 0) {
string information="";
for (int i = 0; i < cls_scores.Count; i++) {
information = information + "cls label: " + cls_labels[i].ToString() +
" cls score: " + cls_scores[i].ToString();
information = information + "\n";
}
return information;
} else if (boxes.Count == 0 && rec_scores.Count > 0 &&
cls_scores.Count == 0) {
string information="";
for (int i = 0; i < rec_scores.Count; i++) {
information = information + "rec text: " + text[i] + " rec score:" +
rec_scores[i].ToString() + " ";
information = information + "\n";
}
return information;
}
no_result = no_result + "No Results!";
return no_result;
}
}
public class OCRClassifierResult{
public int cls_label;
public float cls_score;
}
public class OCRDBDetectorResult{
public List<int[]> boxes;
}
public class OCRRecognizerResult{
public string text;
public float rec_score;
}
public class SegmentationResult{
public List<byte> label_map;
public List<float> score_map;
public List<long> shape;
public bool contain_score_map;
public ResultType type;
public SegmentationResult() {
this.label_map = new List<byte>();
this.score_map = new List<float>();
this.shape = new List<long>();
this.contain_score_map = false;
this.type = ResultType.SEGMENTATION;
}
public string ToString() {
string information;
information = "SegmentationResult Image masks 10 rows x 10 cols: \n";
for (int i = 0; i < 10; ++i) {
information += "[";
for (int j = 0; j < 10; ++j) {
information = information + label_map[i * 10 + j].ToString() + ", ";
}
information += ".....]\n";
}
information += "...........\n";
if (contain_score_map) {
information += "SegmentationResult Score map 10 rows x 10 cols: \n";
for (int i = 0; i < 10; ++i) {
information += "[";
for (int j = 0; j < 10; ++j) {
information = information + score_map[i * 10 + j].ToString() + ", ";
}
information += ".....]\n";
}
information += "...........\n";
}
information += "result shape is: [" + shape[0].ToString() + " " +
shape[1].ToString() + "]";
return information;
}
}
public class ConvertResult {
public static FD_ClassifyResult
ConvertClassifyResultToCResult(ClassifyResult classify_result) {
FD_ClassifyResult fd_classify_result = new FD_ClassifyResult();
// copy label_ids
// Create a managed array
fd_classify_result.label_ids.size = (uint)classify_result.label_ids.Count;
int[] label_ids = new int[fd_classify_result.label_ids.size];
// Copy data from Link to Array
classify_result.label_ids.CopyTo(label_ids);
// Copy data to unmanaged memory
int size = Marshal.SizeOf(label_ids[0]) * label_ids.Length;
fd_classify_result.label_ids.data = Marshal.AllocHGlobal(size);
Marshal.Copy(label_ids, 0, fd_classify_result.label_ids.data,
label_ids.Length);
// copy scores
// Create a managed array
fd_classify_result.scores.size = (uint)classify_result.scores.Count;
float[] scores = new float[fd_classify_result.scores.size];
// Copy data from Link to Array
classify_result.scores.CopyTo(scores);
// Copy data to unmanaged memory
size = Marshal.SizeOf(scores[0]) * scores.Length;
fd_classify_result.scores.data = Marshal.AllocHGlobal(size);
Marshal.Copy(scores, 0, fd_classify_result.scores.data, scores.Length);
fd_classify_result.type = (FD_ResultType)classify_result.type;
return fd_classify_result;
}
public static ClassifyResult
ConvertCResultToClassifyResult(FD_ClassifyResult fd_classify_result) {
ClassifyResult classify_result = new ClassifyResult();
// copy label_ids
int[] label_ids = new int[fd_classify_result.label_ids.size];
Marshal.Copy(fd_classify_result.label_ids.data, label_ids, 0,
label_ids.Length);
classify_result.label_ids = new List<int>(label_ids);
// copy scores
float[] scores = new float[fd_classify_result.scores.size];
Marshal.Copy(fd_classify_result.scores.data, scores, 0, scores.Length);
classify_result.scores = new List<float>(scores);
classify_result.type = (ResultType)fd_classify_result.type;
return classify_result;
}
public static FD_DetectionResult
ConvertDetectionResultToCResult(DetectionResult detection_result) {
FD_DetectionResult fd_detection_result = new FD_DetectionResult();
// copy boxes
int boxes_coordinate_dim = 4;
int size;
fd_detection_result.boxes.size = (uint)detection_result.boxes.Count;
FD_OneDimArraySize[] boxes =
new FD_OneDimArraySize[fd_detection_result.boxes.size];
// Copy each box
for (int i = 0; i < (int)fd_detection_result.boxes.size; i++) {
boxes[i].size = (uint)detection_result.boxes[i].Length;
float[] boxes_i = new float[boxes_coordinate_dim];
detection_result.boxes[i].CopyTo(boxes_i, 0);
size = Marshal.SizeOf(boxes_i[0]) * boxes_i.Length;
boxes[i].data = Marshal.AllocHGlobal(size);
Marshal.Copy(boxes_i, 0, boxes[i].data, boxes_i.Length);
}
// Copy data to unmanaged memory
size = Marshal.SizeOf(boxes[0]) * boxes.Length;
fd_detection_result.boxes.data = Marshal.AllocHGlobal(size);
for (int i = 0; i < boxes.Length; i++) {
Marshal.StructureToPtr(
boxes[i],
fd_detection_result.boxes.data + i * Marshal.SizeOf(boxes[0]), true);
}
// copy scores
fd_detection_result.scores.size = (uint)detection_result.scores.Count;
float[] scores = new float[fd_detection_result.scores.size];
// Copy data from Link to Array
detection_result.scores.CopyTo(scores);
// Copy data to unmanaged memory
size = Marshal.SizeOf(scores[0]) * scores.Length;
fd_detection_result.scores.data = Marshal.AllocHGlobal(size);
Marshal.Copy(scores, 0, fd_detection_result.scores.data, scores.Length);
// copy label_ids
fd_detection_result.label_ids.size = (uint)detection_result.label_ids.Count;
int[] label_ids = new int[fd_detection_result.label_ids.size];
// Copy data from Link to Array
detection_result.label_ids.CopyTo(label_ids);
// Copy data to unmanaged memory
size = Marshal.SizeOf(label_ids[0]) * label_ids.Length;
fd_detection_result.label_ids.data = Marshal.AllocHGlobal(size);
Marshal.Copy(label_ids, 0, fd_detection_result.label_ids.data,
label_ids.Length);
// copy masks
fd_detection_result.masks.size = detection_result.masks.Count;
FD_Mask[] masks = new FD_Mask[fd_detection_result.masks.size];
// copy each mask
for (int i = 0; i < (int)fd_detection_result.masks.size; i++) {
// copy data in mask
masks[i].data.size = (uint)detection_result.masks[i].data.Count;
byte[] masks_data_i = new byte[masks[i].data.size];
detection_result.masks[i].data.CopyTo(masks_data_i);
size = Marshal.SizeOf(masks_data_i[0]) * masks_data_i.Length;
masks[i].data.data = Marshal.AllocHGlobal(size);
Marshal.Copy(masks_data_i, 0, masks[i].data.data, masks_data_i.Length);
// copy shape in mask
masks[i].shape.size = (uint)detection_result.masks[i].shape.Count;
long[] masks_shape_i = new long[masks[i].shape.size];
detection_result.masks[i].shape.CopyTo(masks_shape_i);
size = Marshal.SizeOf(masks_shape_i[0]) * masks_shape_i.Length;
masks[i].shape.data = Marshal.AllocHGlobal(size);
Marshal.Copy(masks_shape_i, 0, masks[i].shape.data, masks_shape_i.Length);
// copy type
masks[i].type = (FD_ResultType)detection_result.masks[i].type;
}
if (fd_detection_result.masks.size != 0) {
size = Marshal.SizeOf(masks[0]) * masks.Length;
fd_detection_result.masks.data = Marshal.AllocHGlobal(size);
for (int i = 0; i < masks.Length; i++) {
Marshal.StructureToPtr(masks[i],
fd_detection_result.masks.data +
i * Marshal.SizeOf(masks[0]),
true);
}
}
fd_detection_result.contain_masks = detection_result.contain_masks;
fd_detection_result.type = (FD_ResultType)detection_result.type;
return fd_detection_result;
}
public static DetectionResult
ConvertCResultToDetectionResult(FD_DetectionResult fd_detection_result) {
DetectionResult detection_result = new DetectionResult();
// copy boxes
detection_result.boxes = new List<float[]>();
FD_OneDimArraySize[] boxes =
new FD_OneDimArraySize[fd_detection_result.boxes.size];
Console.WriteLine(fd_detection_result.boxes.size);
for (int i = 0; i < (int)fd_detection_result.boxes.size; i++) {
boxes[i] = (FD_OneDimArraySize)Marshal.PtrToStructure(
fd_detection_result.boxes.data + i * Marshal.SizeOf(boxes[0]),
typeof(FD_OneDimArraySize));
float[] box_i = new float[boxes[i].size];
Marshal.Copy(boxes[i].data, box_i, 0, box_i.Length);
detection_result.boxes.Add(box_i);
}
// copy scores
float[] scores = new float[fd_detection_result.scores.size];
Marshal.Copy(fd_detection_result.scores.data, scores, 0, scores.Length);
detection_result.scores = new List<float>(scores);
// copy label_ids
int[] label_ids = new int[fd_detection_result.label_ids.size];
Marshal.Copy(fd_detection_result.label_ids.data, label_ids, 0,
label_ids.Length);
detection_result.label_ids = new List<int>(label_ids);
// copy masks
detection_result.masks = new List<Mask>();
FD_Mask[] fd_masks = new FD_Mask[fd_detection_result.masks.size];
for (int i = 0; i < (int)fd_detection_result.masks.size; i++) {
fd_masks[i] = (FD_Mask)Marshal.PtrToStructure(
fd_detection_result.masks.data + i * Marshal.SizeOf(fd_masks[0]),
typeof(FD_Mask));
Mask mask_i = new Mask();
byte[] mask_i_data = new byte[fd_masks[i].data.size];
Marshal.Copy(fd_masks[i].data.data, mask_i_data, 0, mask_i_data.Length);
long[] mask_i_shape = new long[fd_masks[i].shape.size];
Marshal.Copy(fd_masks[i].shape.data, mask_i_shape, 0,
mask_i_shape.Length);
mask_i.type = (ResultType)fd_masks[i].type;
detection_result.masks.Add(mask_i);
}
detection_result.contain_masks = fd_detection_result.contain_masks;
detection_result.type = (ResultType)fd_detection_result.type;
return detection_result;
}
// OCRResult
public static FD_OCRResult
ConvertOCRResultToCResult(OCRResult ocr_result) {
FD_OCRResult fd_ocr_result = new FD_OCRResult();
// copy boxes
int boxes_coordinate_dim = 8;
int size;
fd_ocr_result.boxes.size = (uint)ocr_result.boxes.Count;
FD_OneDimArrayInt32[] boxes =
new FD_OneDimArrayInt32[fd_ocr_result.boxes.size];
// Copy each box
for (int i = 0; i < (int)fd_ocr_result.boxes.size; i++) {
boxes[i].size = (uint)ocr_result.boxes[i].Length;
int[] boxes_i = new int[boxes_coordinate_dim];
ocr_result.boxes[i].CopyTo(boxes_i, 0);
size = Marshal.SizeOf(boxes_i[0]) * boxes_i.Length;
boxes[i].data = Marshal.AllocHGlobal(size);
Marshal.Copy(boxes_i, 0, boxes[i].data, boxes_i.Length);
}
// Copy data to unmanaged memory
size = Marshal.SizeOf(boxes[0]) * boxes.Length;
fd_ocr_result.boxes.data = Marshal.AllocHGlobal(size);
for (int i = 0; i < boxes.Length; i++) {
Marshal.StructureToPtr(
boxes[i],
fd_ocr_result.boxes.data + i * Marshal.SizeOf(boxes[0]), true);
}
// copy text
fd_ocr_result.text = ConvertStringArrayToCOneDimArrayCstr(ocr_result.text.ToArray());
// copy rec_scores
fd_ocr_result.rec_scores.size = (uint)ocr_result.rec_scores.Count;
float[] rec_scores = new float[fd_ocr_result.rec_scores.size];
// Copy data from Link to Array
ocr_result.rec_scores.CopyTo(rec_scores);
// Copy data to unmanaged memory
size = Marshal.SizeOf(rec_scores[0]) * rec_scores.Length;
fd_ocr_result.rec_scores.data = Marshal.AllocHGlobal(size);
Marshal.Copy(rec_scores, 0, fd_ocr_result.rec_scores.data, rec_scores.Length);
// copy cls_scores
fd_ocr_result.cls_scores.size = (uint)ocr_result.cls_scores.Count;
float[] cls_scores = new float[fd_ocr_result.cls_scores.size];
// Copy data from Link to Array
ocr_result.cls_scores.CopyTo(cls_scores);
// Copy data to unmanaged memory
size = Marshal.SizeOf(cls_scores[0]) * cls_scores.Length;
fd_ocr_result.cls_scores.data = Marshal.AllocHGlobal(size);
Marshal.Copy(cls_scores, 0, fd_ocr_result.cls_scores.data, cls_scores.Length);
// copy cls_labels
fd_ocr_result.cls_labels.size = (uint)ocr_result.cls_labels.Count;
int[] cls_labels = new int[fd_ocr_result.cls_labels.size];
// Copy data from Link to Array
ocr_result.cls_labels.CopyTo(cls_labels);
// Copy data to unmanaged memory
size = Marshal.SizeOf(cls_labels[0]) * cls_labels.Length;
fd_ocr_result.cls_labels.data = Marshal.AllocHGlobal(size);
Marshal.Copy(cls_labels, 0, fd_ocr_result.cls_labels.data, cls_labels.Length);
fd_ocr_result.type = (FD_ResultType)ocr_result.type;
return fd_ocr_result;
}
public static OCRResult
ConvertCResultToOCRResult(FD_OCRResult fd_ocr_result) {
OCRResult ocr_result = new OCRResult();
// copy boxes
ocr_result.boxes = new List<int[]>();
FD_OneDimArrayInt32[] boxes =
new FD_OneDimArrayInt32[fd_ocr_result.boxes.size];
for (int i = 0; i < (int)fd_ocr_result.boxes.size; i++) {
boxes[i] = (FD_OneDimArrayInt32)Marshal.PtrToStructure(
fd_ocr_result.boxes.data + i * Marshal.SizeOf(boxes[0]),
typeof(FD_OneDimArrayInt32));
int[] box_i = new int[boxes[i].size];
Marshal.Copy(boxes[i].data, box_i, 0, box_i.Length);
ocr_result.boxes.Add(box_i);
}
// copy text
string[] texts = ConvertCOneDimArrayCstrToStringArray(fd_ocr_result.text);
ocr_result.text = new List<string>(texts);
// copy rec_scores
float[] rec_scores = new float[fd_ocr_result.rec_scores.size];
Marshal.Copy(fd_ocr_result.rec_scores.data, rec_scores, 0,
rec_scores.Length);
ocr_result.rec_scores = new List<float>(rec_scores);
// copy cls_scores
float[] cls_scores = new float[fd_ocr_result.cls_scores.size];
Marshal.Copy(fd_ocr_result.cls_scores.data, cls_scores, 0,
cls_scores.Length);
ocr_result.cls_scores = new List<float>(cls_scores);
// copy cls_labels
int[] cls_labels = new int[fd_ocr_result.cls_labels.size];
Marshal.Copy(fd_ocr_result.cls_labels.data, cls_labels, 0,
cls_labels.Length);
ocr_result.cls_labels = new List<int>(cls_labels);
ocr_result.type = (ResultType)fd_ocr_result.type;
return ocr_result;
}
public static SegmentationResult
ConvertCResultToSegmentationResult(FD_SegmentationResult fd_segmentation_result){
SegmentationResult segmentation_result = new SegmentationResult();
// copy label_map
byte[] label_map = new byte[fd_segmentation_result.label_map.size];
Marshal.Copy(fd_segmentation_result.label_map.data, label_map, 0,
label_map.Length);
segmentation_result.label_map = new List<byte>(label_map);
// copy score_map
float[] score_map = new float[fd_segmentation_result.score_map.size];
Marshal.Copy(fd_segmentation_result.score_map.data, score_map, 0,
score_map.Length);
segmentation_result.score_map = new List<float>(score_map);
// copy shape
long[] shape = new long[fd_segmentation_result.shape.size];
Marshal.Copy(fd_segmentation_result.shape.data, shape, 0,
shape.Length);
segmentation_result.shape = new List<long>(shape);
segmentation_result.contain_score_map = fd_segmentation_result.contain_score_map;
segmentation_result.type = (ResultType)fd_segmentation_result.type;
return segmentation_result;
}
public static FD_SegmentationResult
ConvertSegmentationResultToCResult(SegmentationResult segmentation_result){
FD_SegmentationResult fd_segmentation_result = new FD_SegmentationResult();
// copy label_map
// Create a managed array
fd_segmentation_result.label_map.size = (uint)segmentation_result.label_map.Count;
byte[] label_map = new byte[fd_segmentation_result.label_map.size];
// Copy data from Link to Array
segmentation_result.label_map.CopyTo(label_map);
// Copy data to unmanaged memory
int size = Marshal.SizeOf(label_map[0]) * label_map.Length;
fd_segmentation_result.label_map.data = Marshal.AllocHGlobal(size);
Marshal.Copy(label_map, 0, fd_segmentation_result.label_map.data,
label_map.Length);
// copy score_map
// Create a managed array
fd_segmentation_result.score_map.size = (uint)segmentation_result.score_map.Count;
if(fd_segmentation_result.score_map.size != 0){
float[] score_map = new float[fd_segmentation_result.score_map.size];
// Copy data from Link to Array
segmentation_result.score_map.CopyTo(score_map);
// Copy data to unmanaged memory
size = Marshal.SizeOf(score_map[0]) * score_map.Length;
fd_segmentation_result.score_map.data = Marshal.AllocHGlobal(size);
Marshal.Copy(score_map, 0, fd_segmentation_result.score_map.data,
score_map.Length);
}
// copy shape
// Create a managed array
fd_segmentation_result.shape.size = (uint)segmentation_result.shape.Count;
long[] shape = new long[fd_segmentation_result.shape.size];
// Copy data from Link to Array
segmentation_result.shape.CopyTo(shape);
// Copy data to unmanaged memory
size = Marshal.SizeOf(shape[0]) * shape.Length;
fd_segmentation_result.shape.data = Marshal.AllocHGlobal(size);
Marshal.Copy(shape, 0, fd_segmentation_result.shape.data,
shape.Length);
fd_segmentation_result.contain_score_map = segmentation_result.contain_score_map;
fd_segmentation_result.type = (FD_ResultType)segmentation_result.type;
return fd_segmentation_result;
}
public static FD_OneDimArrayCstr
ConvertStringArrayToCOneDimArrayCstr(string[] strs){
FD_OneDimArrayCstr fd_one_dim_cstr = new FD_OneDimArrayCstr();
fd_one_dim_cstr.size = (nuint)strs.Length;
// Copy data to unmanaged memory
FD_Cstr[] c_strs = new FD_Cstr[strs.Length];
int size = Marshal.SizeOf(c_strs[0]) * c_strs.Length;
fd_one_dim_cstr.data = Marshal.AllocHGlobal(size);
for (int i = 0; i < strs.Length; i++) {
c_strs[i].size = (nuint)strs[i].Length;
c_strs[i].data = strs[i];
Marshal.StructureToPtr(
c_strs[i],
fd_one_dim_cstr.data + i * Marshal.SizeOf(c_strs[0]), true);
}
return fd_one_dim_cstr;
}
public static string[]
ConvertCOneDimArrayCstrToStringArray(FD_OneDimArrayCstr c_strs){
string[] strs = new string[c_strs.size];
for(int i=0; i<(int)c_strs.size; i++){
FD_Cstr cstr = (FD_Cstr)Marshal.PtrToStructure(
c_strs.data + i * Marshal.SizeOf(new FD_Cstr()),
typeof(FD_Cstr));
strs[i] = cstr.data;
}
return strs;
}
}
}
}