public static void toWebP(Bitmap bmp, string outputpath, int quality)
{
using (WebP webp = new WebP())
{
webp.Save(bmp, outputpath, quality);
}
}
/// <summary>resize the webp image</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="compress">compress image if that true</param>
/// <returns>return true if do correctly else return false</returns>
public static bool ResizeWebPFromWeb(string sourceUrl, string destPath, int width, int height, bool compress = false)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
using (WebP webp = new WebP())
{
var stream = Helper.DownloadImage(sourceUrl);
var webp_byte = Helper.ReadByte(stream);
Bitmap bmp;
if (compress)
{
bmp = webp.GetThumbnailFast(webp_byte, width, height);
}
else
{
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
}
webp.Save(bmp, destPath);
}
return(true);
}
catch { throw; }
}
public static bool WriteWebP(Bitmap imageToConvert, string outputPath)
{
bool success = false;
using (WebP webp = new WebP())
webp.Save(imageToConvert, outputPath, ExportSettings.imageQuality);
success = true;
return(success);
}
/// <summary>
/// 画像ファイルをWebPファイル形式に変換する
/// </summary>
/// <param name="imagePath"></param>
/// <param name="quality"></param>
/// <param name="isDeleteSourceFile"></param>
/// <returns></returns>
private static bool imageToWebp(string imagePath, int quality, bool isDeleteSourceFile)
{
var dirPath = Path.GetDirectoryName(imagePath);
if (dirPath == null)
{
Log.Warn($"画像ファイルパスはフルパスで指定してください file={imagePath}");
return(false);
}
var fileName = "";
try
{
var outputPath = Path.Combine(dirPath, Path.GetFileNameWithoutExtension(imagePath) + ".webp");
if (File.Exists(outputPath))
{
Log.Warn($"WebPファイルが既に存在するので削除 file={outputPath}");
File.Delete(outputPath);
}
fileName = Path.GetFileName(imagePath);
Log.Info($"WebP変換開始 file={fileName}");
using (var bitmap = new Bitmap(imagePath))
{
using var convBitmap = bitmap.Clone(new Rectangle(0, 0, bitmap.Width, bitmap.Height)
, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using WebP webp = new WebP();
webp.Save(convBitmap, outputPath, quality);
}
Log.Info($"WebP変換終了 file={fileName}");
if (isDeleteSourceFile)
{
File.Delete(imagePath);
}
}
catch (Exception e)
{
Log.Error(e, $"WebP変換例外 file={fileName}");
return(false);
}
return(true);
}
/// <summary>convert png image to webp</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="quality">quality of converted image, between 0 and 100 <para>min quality : 0 </para><para>max quality : 100</para></param>
/// <returns>return true if do correctly else return false</returns>
public static bool PngToWebPFromWeb(string sourceUrl, string destPath, int quality = 100)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath))
{
return(false);
}
if (quality <= 0 || quality > 100)
{
quality = 100;
}
using (WebP webp = new WebP())
{
Bitmap bmp = new Bitmap(Helper.DownloadImage(sourceUrl));
webp.Save(bmp, destPath, quality);
}
return(true);
}
catch { throw; }
}
/// <summary>convert jpeg image to webp</summary>
/// <param name="sourcePath">valid source image path</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="quality">quality of converted image, between 0 and 100 <para>min quality : 0 </para><para>max quality : 100</para></param>
/// <returns>return true if do correctly else return false</returns>
public static bool JpegToWebP(string sourcePath, string destPath, int quality = 100)
{
try
{
if (String.IsNullOrEmpty(sourcePath) || String.IsNullOrEmpty(destPath))
{
return(false);
}
if (quality <= 0 || quality > 100)
{
quality = 100;
}
using (WebP webp = new WebP())
{
Bitmap bmp = new Bitmap(sourcePath);
webp.Save(bmp, destPath, quality);
}
return(true);
}
catch { throw; }
}
/// <summary>convert png image to webp and resize image</summary>
/// <param name="sourceUrl">valid source image url</param>
/// <param name="destPath">destination image path that saved image there</param>
/// <param name="width">width that image resized to them</param>
/// <param name="height">height that image resized to them</param>
/// <param name="quality">quality of converted image, between 0 and 100 <para>min quality : 0 </para><para>max quality : 100</para></param>
/// <returns>return true if do correctly else return false</returns>
public static bool PngToWebPFromWeb(string sourceUrl, string destPath, int width, int height, int quality = 100)
{
try
{
if (String.IsNullOrEmpty(sourceUrl) || String.IsNullOrEmpty(destPath) || width <= 0 || height <= 0)
{
return(false);
}
if (quality <= 0 || quality > 100)
{
quality = 100;
}
using (WebP webp = new WebP())
{
Bitmap bmp = new Bitmap(Helper.DownloadImage(sourceUrl));
var webp_byte = webp.EncodeLossless(bmp);
bmp = webp.GetThumbnailQuality(webp_byte, width, height);
webp.Save(bmp, destPath, quality);
}
return(true);
}
catch { throw; }
}
public static void Save(Bitmap bmp, string path)
{
using (WebP webp = new WebP()) webp.Save(bmp, path);
}
