瑞芯微使用RGA进行格式转换代码示例
时间: 2023-12-28 11:03:58 浏览: 45
以下是使用RGA进行BMP格式图像转换为PNG格式图像的示例代码:
```c++
#include <iostream>
#include <fstream>
#include <rga.h>
using namespace std;
int main(int argc, char* argv[])
{
// 读取BMP格式图像
ifstream bmpFile("test.bmp", ios::binary);
if (!bmpFile)
{
cerr << "Failed to open BMP file." << endl;
return -1;
}
bmpFile.seekg(0, ios::end);
int bmpSize = bmpFile.tellg();
char* bmpData = new char[bmpSize];
bmpFile.seekg(0, ios::beg);
bmpFile.read(bmpData, bmpSize);
bmpFile.close();
// 初始化RGA库
rga_status_t status = rga_init();
if (status != RGA_STATUS_SUCCESS)
{
cerr << "Failed to initialize RGA library." << endl;
return -1;
}
// 创建RGA图像对象
rga_image_t bmpImage = { 0 };
bmpImage.width = 640;
bmpImage.height = 480;
bmpImage.format = RGA_IMAGE_FORMAT_BGR888;
bmpImage.buffer = bmpData;
bmpImage.buffer_size = bmpSize;
// 创建PNG格式图像
rga_image_t pngImage = { 0 };
pngImage.width = 640;
pngImage.height = 480;
pngImage.format = RGA_IMAGE_FORMAT_RGBA8888;
pngImage.buffer_size = 640 * 480 * 4;
pngImage.buffer = new char[pngImage.buffer_size];
// 进行图像格式转换
status = rga_convert_image(&bmpImage, &pngImage, RGA_IMAGE_FORMAT_PNG);
if (status != RGA_STATUS_SUCCESS)
{
cerr << "Failed to convert image." << endl;
return -1;
}
// 将PNG格式图像保存到文件
ofstream pngFile("test.png", ios::binary);
if (!pngFile)
{
cerr << "Failed to save PNG file." << endl;
return -1;
}
pngFile.write(pngImage.buffer, pngImage.buffer_size);
pngFile.close();
// 释放内存和关闭RGA库
delete[] bmpData;
delete[] pngImage.buffer;
rga_deinit();
return 0;
}
```
需要注意的是,以上代码仅供参考,具体实现可能会因环境、需求等因素而有所不同。