{"id":5365,"date":"2022-10-16T17:07:11","date_gmt":"2022-10-16T08:07:11","guid":{"rendered":"https:\/\/okamurax.com\/?p=5365"},"modified":"2022-10-20T22:49:15","modified_gmt":"2022-10-20T13:49:15","slug":"casp-core-skiasharp-iformfile%e7%94%bb%e5%83%8f%e3%83%aa%e3%82%b5%e3%82%a4%e3%82%ba","status":"publish","type":"post","link":"https:\/\/appbay.org\/?p=5365","title":{"rendered":"C#(ASP.NET Core) SkiaSharp IFormFile(\u753b\u50cf)\u30ea\u30b5\u30a4\u30ba"},"content":{"rendered":"<pre class=\"lang:c# decode:true \">            var formFile = Request.Form.Files[\"furniture\"];\r\n\r\n            if (formFile != null)\r\n            {\r\n                using (var ms = new MemoryStream()) \/\/TEST\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - FileStream\r\n                    \/\/ \u30b3\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u3044\u306a\u3044\u306e\u3067Bmp\u8aad\u8fbc\/\u66f8\u51fa\u53ef\u80fd\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    string extension = System.IO.Path.GetExtension(formFile.FileName);\r\n                    using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"1_\" + testTable33.Id.ToString() + extension, FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                    await fs.WriteAsync(byteArray, 0, byteArray.Length);\r\n                }\r\n\r\n                using (var ms = new MemoryStream()) \/\/TEST\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - SKImage - Encode(png) - FileStream\r\n                    \/\/ Png\u306e\u90e8\u5206\u3092Bmp\u306b\u3059\u308b\u3068\u30a8\u30e9\u30fc\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    SKImage image = SkiaSharp.SKImage.FromEncodedData(byteArray);\r\n                    var data = image.Encode(SKEncodedImageFormat.Png, 100);\r\n                    using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"2_\" + testTable33.Id.ToString() + \".png\", FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                    data.SaveTo(fs);\r\n                }\r\n\r\n                using (var ms = new MemoryStream()) \/\/TEST\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - SKBitmap - Encode(png) - FileStream\r\n                    \/\/ Png\u306e\u90e8\u5206\u3092Bmp\u306b\u3059\u308b\u3068\u30a8\u30e9\u30fc\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    SKBitmap bitmap = SKBitmap.Decode(byteArray);\r\n                    var data = bitmap.Encode(SKEncodedImageFormat.Png, 100);\r\n                    using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"3_\" + testTable33.Id.ToString() + \".png\", FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                    data.SaveTo(fs);\r\n                }\r\n\r\n                using (var ms = new MemoryStream()) \/\/TEST\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - SKBitmap - Encode(png) - FileStream\r\n                    \/\/ Png\u306e\u90e8\u5206\u3092Bmp\u306b\u3059\u308b\u3068\u30a8\u30e9\u30fc\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    SKBitmap bitmap = SKBitmap.Decode(byteArray);\r\n                    using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"4_\" + testTable33.Id.ToString() + \".png\", FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                    bitmap.Encode(fs,SKEncodedImageFormat.Png, 100); \/\/ SKBitmap\u306e\u5834\u5408Stream\u3092Target\u306b\u3067\u304d\u308b\r\n                }\r\n\r\n                using (var ms = new MemoryStream()) \/\/TEST\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - SKBitmap - Encode(png) - MemoryStream - FileStream\r\n                    \/\/ Png\u306e\u90e8\u5206\u3092Bmp\u306b\u3059\u308b\u3068\u30a8\u30e9\u30fc\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    SKBitmap bitmap = SKBitmap.Decode(byteArray);\r\n\r\n                    using (var ms2 = new MemoryStream())\r\n                    {\r\n                        bitmap.Encode(ms2, SKEncodedImageFormat.Png, 100);\r\n                        using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"5_\" + testTable33.Id.ToString() + \".png\", FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                        await fs.WriteAsync(ms2.ToArray());\r\n                    }\r\n\r\n                }\r\n\r\n                using (var ms = new MemoryStream())\r\n                {\r\n                    \/\/ IFormFile - MemoryStream - Byte[] - SKBitmap - SKCanvas - Encode(png) - FileStream\r\n                    \/\/ 500*500\u306b\u5207\u308a\u629c\u304d\r\n                    \/\/ Exif\u60c5\u5831\u3067\u56de\u8ee2\r\n                    \/\/ Png\u306e\u90e8\u5206\u3092Bmp\u306b\u3059\u308b\u3068\u30a8\u30e9\u30fc\r\n                    await formFile.CopyToAsync(ms);\r\n                    var byteArray = ms.ToArray();\r\n                    SKBitmap srcBitmap = SKBitmap.Decode(byteArray);\r\n\r\n                    int w = srcBitmap.Width;\r\n                    int h = srcBitmap.Height;\r\n\r\n                    SKRect src;\r\n\r\n                    if (w &gt; h)\r\n                    {\r\n                        int tmp = (w - h) \/ 2;\r\n                        src = new SKRect(tmp, 0, tmp+h, h); \/\/ left, top, right, bottom\r\n                    }\r\n                    else if(w &lt; h)\r\n                    {\r\n                        int tmp = (h - w) \/ 2;\r\n                        src = new SKRect(0, tmp, w, tmp + w);\r\n                    }\r\n                    else \/\/ w == h\r\n                    {\r\n                        src = new SKRect(0,0,w,h);\r\n                    }\r\n\r\n                    SKBitmap croppedBitmap = new SKBitmap(500, 500);\r\n                    SKCanvas canvas = new SKCanvas(croppedBitmap);\r\n\r\n                    \/\/ Exif Orientation\r\n                    switch (origin)\r\n                    {\r\n                        case SKEncodedOrigin.TopLeft: \/\/ 1\r\n                            break;\r\n                        case SKEncodedOrigin.TopRight: \/\/ 2\r\n                            canvas.Scale(-1, 1, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.BottomRight: \/\/ 3\r\n                            canvas.RotateDegrees(180, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.BottomLeft: \/\/ 4\r\n                            canvas.Scale(1, -1, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.LeftTop: \/\/ 5\r\n                            canvas.RotateDegrees(90, 250, 250);\r\n                            canvas.Scale(1, -1, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.RightTop: \/\/ 6\r\n                            canvas.RotateDegrees(90, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.RightBottom: \/\/ 7\r\n                            canvas.RotateDegrees(90, 250, 250);\r\n                            canvas.Scale(-1, 1, 250, 250);\r\n                            break;\r\n                        case SKEncodedOrigin.LeftBottom: \/\/ 8\r\n                            canvas.RotateDegrees(270, 250, 250);\r\n                            break;\r\n                    }\r\n\r\n                    SKRect dst = new SKRect(0, 0, 500, 500);\r\n                    canvas.DrawBitmap(srcBitmap, src, dst);\r\n\r\n                    using var fs = new FileStream(_environment.WebRootPath + \"\/Image\/\" + \"6_\" + testTable33.Id.ToString() + \".png\", FileMode.Create); \/\/\u540c\u540d\u30d5\u30a1\u30a4\u30eb\u304c\u3042\u308b\u3068\u4e0a\u66f8\u304d\u3055\u308c\u308b\r\n                    croppedBitmap.Encode(fs, SKEncodedImageFormat.Png, 100); \/\/ SKBitmap\u306e\u5834\u5408Stream\u3092Target\u306b\u3067\u304d\u308b\r\n                }\r\n\r\n            }<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>var formFile = Request.Form.Files[&#8220;furniture&#8221;]; if (formFile != null) { using (var ms = new MemoryStream()) \/\/ &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/appbay.org\/?p=5365\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;C#(ASP.NET Core) SkiaSharp IFormFile(\u753b\u50cf)\u30ea\u30b5\u30a4\u30ba&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9],"class_list":["post-5365","post","type-post","status-publish","format-standard","hentry","category-1","tag-c-net"],"_links":{"self":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/5365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5365"}],"version-history":[{"count":5,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/5365\/revisions"}],"predecessor-version":[{"id":5378,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/5365\/revisions\/5378"}],"wp:attachment":[{"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}