private void ResizeWithImageSharp(string filePath, string resizedFilePath, int size)
{
using (SixLabors.ImageSharp.Image <Rgba32> image = SixLabors.ImageSharp.Image.Load(filePath))
{
image.Mutate(ctx => ctx.Resize(size, size));
image.Save(resizedFilePath);
}
}
public static System.Drawing.Bitmap ToBitmap <TPixel>(this SixLabors.ImageSharp.Image <TPixel> image) where TPixel : unmanaged, IPixel <TPixel>
{
using (var memoryStream = new MemoryStream())
{
var imageEncoder = image.GetConfiguration().ImageFormatsManager.FindEncoder(PngFormat.Instance);
image.Save(memoryStream, imageEncoder);
memoryStream.Seek(0, SeekOrigin.Begin);
return(new System.Drawing.Bitmap(memoryStream));
}
}
public byte[] GetVideoImageByte(int imageId, int?maxWidth)
{
var imageInfo = this._imageRepo.Get(imageId);
if (imageInfo != null)
{
var imageRootPath = this._settingService.GetSettingValue(SettingKey.ImageDir);
var imageFullPath = imageRootPath + imageInfo.Path.Replace("/", "\\");
var imageExt = Path.GetExtension(imageInfo.Path);
if (System.IO.File.Exists(imageFullPath))
{
// 原图输出
if (!maxWidth.HasValue)
{
return(System.IO.File.ReadAllBytes(imageFullPath));
}
else
{
// 处理缩略图
using (SixLabors.ImageSharp.Image <Rgba32> srcImg = SixLabors.ImageSharp.Image.Load(imageFullPath))
{
int resetWidth = maxWidth.Value;
if (resetWidth > srcImg.Width)
{
resetWidth = srcImg.Width;
}
// 缩细倍数
var imgP = (Convert.ToDouble(resetWidth) / Convert.ToDouble(srcImg.Width));
var resetHeight = Convert.ToInt32(Convert.ToDouble(srcImg.Height) * imgP);
srcImg.Mutate(x => x.Resize(resetWidth, resetHeight));
using (System.IO.MemoryStream ms = new MemoryStream())
{
srcImg.Save(ms, SixLabors.ImageSharp.ImageFormats.Jpeg);
byte[] imageByte = ms.ToArray();
return(imageByte);
}
}
}
}
}
return(null);
}
/// <summary>
/// 获取图片二进制数据
/// </summary>
/// <param name="path">物理路径</param>
/// <param name="maxWidth">最大宽度</param>
/// <returns></returns>
protected byte[] GetImageByte(string path, int?maxWidth)
{
if (System.IO.File.Exists(path))
{
var imageFullPath = path.Replace("/", "\\");
var imageExt = Path.GetExtension(imageFullPath);
// 原图输出
if (!maxWidth.HasValue)
{
return(System.IO.File.ReadAllBytes(imageFullPath));
}
else
{
// 处理缩略图
using (SixLabors.ImageSharp.Image <Rgba32> srcImg = SixLabors.ImageSharp.Image.Load(imageFullPath))
{
int resetWidth = maxWidth.Value;
if (resetWidth > srcImg.Width)
{
resetWidth = srcImg.Width;
}
// 缩细倍数
var imgP = (Convert.ToDouble(resetWidth) / Convert.ToDouble(srcImg.Width));
var resetHeight = Convert.ToInt32(Convert.ToDouble(srcImg.Height) * imgP);
srcImg.Mutate(x => x.Resize(resetWidth, resetHeight));
using (System.IO.MemoryStream ms = new MemoryStream())
{
srcImg.Save(ms, SixLabors.ImageSharp.ImageFormats.Jpeg);
byte[] imageByte = ms.ToArray();
return(imageByte);
}
}
}
}
return(null);
}
