QImage::fromData()方法将yuv数据转换为QImage对象, 给出代码
时间: 2023-05-22 17:02:05 浏览: 61
下面是将yuv数据转换为QImage对象的示例代码:
```cpp
QImage yuvToQImage(const uchar* data, int width, int height)
{
QImage image(width, height, QImage::Format_RGB888);
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int Y = data[y * width + x];
int U = data[(y / 2) * (width / 2) + (x / 2) + width * height];
int V = data[(y / 2) * (width / 2) + (x / 2) + width * height * 5 / 4];
Y -= 16;
U -= 128;
V -= 128;
int R = qBound(0, (298 * Y + 409 * V + 128) >> 8, 255);
int G = qBound(0, (298 * Y - 100 * U - 208 * V + 128) >> 8, 255);
int B = qBound(0, (298 * Y + 516 * U + 128) >> 8, 255);
image.setPixel(x, y, qRgb(R, G, B));
}
}
return image;
}
```
这个函数将yuv数据转换为RGB格式的QImage对象。