主题
列出已加载OCR模型 - OcrListModels
函数简介
返回当前实例已加载的全部 OCR 模型信息(JSON 对象,含 Models 数组)。
接口名称
OcrListModelsDLL 调用
long OcrListModels(long ola);参数说明
| 参数名 | 类型 | 说明 |
|---|---|---|
| ola | 长整数型 | OLAPlug 对象指针,由 CreateCOLAPlugInterFace 生成。 |
示例
SDK 调用
cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
auto result = ola.OcrListModels();csharp
using OLAPlug;
var ola = new OLAPlugServer();
var result = ola.OcrListModels();python
from OLAPlugServer import OLAPlugServer
ola = OLAPlugServer()
result = ola.OcrListModels()java
import com.olaplug.OLAPlugServer;
OLAPlugServer ola = new OLAPlugServer();
var result = ola.OcrListModels();cpp
var ola = com("OlaPlug.OlaSoft")
var result = ola.OcrListModels()vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
result = ola.OcrListModels()text
.局部变量 ola, OLAPlug
ola.创建 ()
result = ola.OcrListModels()aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var result = ola.OcrListModels();text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
自动 result = ola.OcrListModels()cpp
#include "OLAPlugServer.h"
OLAPlugServer ola;
auto result = ola.OcrListModels();原生 DLL 调用
cpp
long instance = CreateCOLAPlugInterFace();
long ptr = OcrListModels(instance);
if (ptr != 0) {
char buffer[512] = {0};
GetStringFromPtr(ptr, buffer, sizeof(buffer));
FreeStringPtr(ptr);
}csharp
using System.Runtime.InteropServices;
using System.Text;
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long CreateCOLAPlugInterFace();
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringFromPtr(long ptr, StringBuilder lpString, int size);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int FreeStringPtr(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern int GetStringSize(long ptr);
[DllImport("OLAPlug_x64.dll", CallingConvention = CallingConvention.StdCall)]
static extern long OcrListModels(long ola);
long instance = CreateCOLAPlugInterFace();
long ptr = OcrListModels(instance);
if (ptr != 0) {
StringBuilder sb = new StringBuilder(GetStringSize(ptr) + 1);
GetStringFromPtr(ptr, sb, sb.Capacity);
FreeStringPtr(ptr);
string result = sb.ToString();
}python
from ctypes import CDLL, c_int, c_int64, create_string_buffer
ola = CDLL("OLAPlug_x64.dll")
ola.CreateCOLAPlugInterFace.restype = c_int64
instance = ola.CreateCOLAPlugInterFace()
ptr = ola.OcrListModels(instance)
if ptr:
buf = create_string_buffer(512)
ola.GetStringFromPtr(ptr, buf, 512)
ola.FreeStringPtr(ptr)
result = buf.value.decode("utf-8")返回值
长整数型:JSON 字符串指针。
成功时含 Success、ActiveModel(当前 active 句柄)、Models(数组;元素字段同 OcrGetModelInfo)。
注意事项
- 需要插件已开通 OCR 模块权限(Reg、Login 的 FeatureList 中包含 OCR 特性)。
- 内置 PP-OCR mobile 模型句柄为 0,通常出现在
Models中且ActiveModel默认为 0。 - 字段说明见 OCRModelInfo与ModelConfig说明。
- 返回的 JSON 字符串须调用 FreeStringPtr 释放。
