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转换颜色格式 - ConvertColor

函数简介

转换图像的颜色格式,支持灰度、RGBA、BGR、HSVA、HSV等多种格式。

接口名称

ConvertColor

DLL调用

long ConvertColor(long instance, long ptr, int type);

参数说明

参数名类型说明
instance长整数型OLAPlug对象的指针,由 CreateCOLAPlugInterFace 接口生成。
ptr长整数型图像指针
type整数型转换类型:0 转为灰度、1 BGRA转RGBA、2 BGRA转BGR、3 BGRA转HSVA、4 BGRA转HSV

示例

SDK 调用

cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.ConvertColor(0, 0);
csharp
using OLAPlug;

var ola = new OLAPlugServer();
long handle = ola.ConvertColor(0, 0);
python
from OLAPlugServer import OLAPlugServer

ola = OLAPlugServer()
handle = ola.ConvertColor(0, 0)
java
import com.olaplug.OLAPlugServer;

OLAPlugServer ola = new OLAPlugServer();
long handle = ola.ConvertColor(0, 0);
cpp
var ola = com("OlaPlug.OlaSoft")
var handle = ola.ConvertColor(0, 0)
vbscript
Set ola = CreateObject("OlaPlug.OlaSoft")
handle = ola.ConvertColor(0, 0)
text
.局部变量 ola, OLAPlug
ola.创建 ()
handle = ola.ConvertColor(0, 0)
aardio
import OLAPlugServer;
var ola = OLAPlugServer();
var handle = ola.ConvertColor(0, 0);
text
变量 ola <类型 = OLAPlugServer>
ola = 新建 OLAPlugServer
长整数 handle = ola.ConvertColor(0, 0)
cpp
#include "OLAPlugServer.h"

OLAPlugServer ola;
long handle = ola.ConvertColor(0, 0);

原生 DLL 调用

cpp
long instance = CreateCOLAPlugInterFace();
ConvertColor(instance, 0, 0);
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 long ConvertColor(long ola, long ptr, int type);

long instance = CreateCOLAPlugInterFace();
ConvertColor(instance, 0, 0);
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()
ola.ConvertColor(instance, 0, 0)

返回值

长整数型:返回转换后的图像指针,失败返回0。

注意事项

  • 灰度转换会丢失颜色信息,但保留亮度信息。
  • 返回的图像需调用 FreeImagePtr 释放内存。