markus / KCOM / Common / ImageSourceHelper.cs @ 87542f92
이력 | 보기 | 이력해설 | 다운로드 (6.8 KB)
| 1 | cdfb57ff | taeseongkim | using System; |
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| 2 | using System.Collections.Generic; |
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| 3 | using System.Linq; |
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| 4 | using System.Text; |
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| 5 | using System.Threading.Tasks; |
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| 6 | using System.Windows.Media; |
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| 7 | using System.Windows.Media.Imaging; |
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| 8 | |||
| 9 | namespace KCOM.Common |
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| 10 | {
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| 11 | public static class ImageSourceHelper |
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| 12 | {
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| 13 | 92442e4a | taeseongkim | public static async System.Threading.Tasks.Task<BitmapImage> GetDownloadImageAsync(Uri uri, double pageWidth, double pageHeight) |
| 14 | cdfb57ff | taeseongkim | {
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| 15 | System.Net.Http.HttpClient httpClient = null; |
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| 16 | System.IO.Stream responseStream = null; |
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| 17 | System.IO.MemoryStream memoryStream = null; |
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| 18 | BitmapImage image = null; |
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| 19 | |||
| 20 | try |
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| 21 | {
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| 22 | using (httpClient = new System.Net.Http.HttpClient()) |
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| 23 | {
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| 24 | using (responseStream = await httpClient.GetStreamAsync(uri)) |
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| 25 | {
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| 26 | using (memoryStream = new System.IO.MemoryStream()) |
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| 27 | {
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| 28 | System.Diagnostics.Debug.WriteLine("이미지 다운로드");
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| 29 | |||
| 30 | await responseStream.CopyToAsync(memoryStream); |
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| 31 | |||
| 32 | image = new BitmapImage(); |
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| 33 | image.BeginInit(); |
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| 34 | image.CacheOption = BitmapCacheOption.OnLoad; |
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| 35 | image.StreamSource = memoryStream; |
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| 36 | image.DecodePixelWidth = (int)pageWidth; |
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| 37 | image.DecodePixelHeight = (int)pageHeight; |
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| 38 | image.EndInit(); |
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| 39 | image.Freeze(); |
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| 40 | return image; |
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| 41 | } |
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| 42 | } |
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| 43 | } |
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| 44 | } |
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| 45 | catch (Exception ex) |
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| 46 | {
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| 47 | throw new Exception("Image Load Error ", ex);
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| 48 | } |
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| 49 | finally |
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| 50 | {
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| 51 | httpClient?.Dispose(); |
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| 52 | responseStream?.Dispose(); |
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| 53 | memoryStream?.Dispose(); |
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| 54 | image = null; |
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| 55 | } |
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| 56 | } |
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| 57 | 566f0526 | taeseongkim | |
| 58 | public static byte[] CopyPixels(BitmapSource image) |
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| 59 | {
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| 60 | byte[] result = new byte[image.PixelWidth * image.PixelHeight * 4]; |
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| 61 | image.CopyPixels(result, image.PixelWidth * 4, 0); |
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| 62 | |||
| 63 | return result; |
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| 64 | } |
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| 65 | |||
| 66 | public static byte[] SetBrightness(int brightness, byte[] pixels) |
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| 67 | {
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| 68 | for (int i = 0; i < pixels.Length / 4; ++i) |
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| 69 | {
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| 70 | byte b = pixels[i * 4]; |
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| 71 | byte g = pixels[i * 4 + 1]; |
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| 72 | byte r = pixels[i * 4 + 2]; |
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| 73 | byte a = pixels[i * 4 + 3]; |
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| 74 | |||
| 75 | if (r != 255 || g != 255 || b != 255 || a == 255) |
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| 76 | {
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| 77 | b = (byte)(b + brightness); |
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| 78 | g = (byte)(g + brightness); |
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| 79 | r = (byte)(r + brightness); |
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| 80 | ///a = (byte)(a + brightness); |
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| 81 | |||
| 82 | if (r < 0) r = 1; |
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| 83 | if (r > 255) r = 255; |
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| 84 | |||
| 85 | if (g < 0) g = 1; |
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| 86 | if (g > 255) g = 255; |
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| 87 | |||
| 88 | if (b < 0) b = 1; |
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| 89 | if (b > 255) b = 255; |
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| 90 | |||
| 91 | pixels[i * 4] = b; |
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| 92 | pixels[i * 4 + 1] = g; |
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| 93 | pixels[i * 4 + 2] = r; |
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| 94 | } |
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| 95 | } |
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| 96 | |||
| 97 | return pixels; |
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| 98 | } |
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| 99 | |||
| 100 | public static byte[] SetBrightnessAndContrast(int brightness,double contrast, byte[] pixels) |
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| 101 | {
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| 102 | if (contrast < -100) contrast = -100; |
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| 103 | if (contrast > 100) contrast = 100; |
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| 104 | contrast = (100.0 + contrast) / 100.0; |
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| 105 | contrast *= contrast; |
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| 106 | |||
| 107 | for (int i = 0; i < pixels.Length / 4; ++i) |
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| 108 | {
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| 109 | byte b = pixels[i * 4]; |
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| 110 | byte g = pixels[i * 4 + 1]; |
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| 111 | byte r = pixels[i * 4 + 2]; |
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| 112 | byte a = pixels[i * 4 + 3]; |
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| 113 | |||
| 114 | fc9da8df | taeseongkim | if (r != 255 || g != 255 || b != 255 || a != 255) |
| 115 | 566f0526 | taeseongkim | {
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| 116 | b = (byte)(b + brightness); |
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| 117 | g = (byte)(g + brightness); |
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| 118 | r = (byte)(r + brightness); |
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| 119 | ///a = (byte)(a + brightness); |
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| 120 | |||
| 121 | if (r < 0) r = 1; |
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| 122 | if (r > 255) r = 255; |
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| 123 | |||
| 124 | if (g < 0) g = 1; |
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| 125 | if (g > 255) g = 255; |
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| 126 | |||
| 127 | if (b < 0) b = 1; |
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| 128 | if (b > 255) b = 255; |
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| 129 | |||
| 130 | double pR = r / 255.0; |
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| 131 | pR -= 0.5; |
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| 132 | pR *= contrast; |
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| 133 | pR += 0.5; |
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| 134 | pR *= 255; |
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| 135 | if (pR < 0) pR = 0; |
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| 136 | if (pR > 255) pR = 255; |
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| 137 | |||
| 138 | double pG = g / 255.0; |
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| 139 | pG -= 0.5; |
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| 140 | pG *= contrast; |
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| 141 | pG += 0.5; |
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| 142 | pG *= 255; |
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| 143 | if (pG < 0) pG = 0; |
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| 144 | if (pG > 255) pG = 255; |
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| 145 | |||
| 146 | double pB = b / 255.0; |
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| 147 | pB -= 0.5; |
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| 148 | pB *= contrast; |
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| 149 | pB += 0.5; |
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| 150 | pB *= 255; |
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| 151 | if (pB < 0) pB = 0; |
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| 152 | if (pB > 255) pB = 255; |
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| 153 | |||
| 154 | pixels[i * 4] = (byte)pB; |
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| 155 | pixels[i * 4 + 1] = (byte)pG; |
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| 156 | pixels[i * 4 + 2] = (byte)pR; |
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| 157 | fc9da8df | taeseongkim | } |
| 158 | 566f0526 | taeseongkim | } |
| 159 | |||
| 160 | return pixels; |
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| 161 | } |
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| 162 | |||
| 163 | public static byte[] SetContrast(double contrast, byte[] pixels) |
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| 164 | {
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| 165 | if (contrast < -100) contrast = -100; |
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| 166 | if (contrast > 100) contrast = 100; |
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| 167 | contrast = (100.0 + contrast) / 100.0; |
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| 168 | contrast *= contrast; |
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| 169 | |||
| 170 | for (int i = 0; i < pixels.Length / 4; ++i) |
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| 171 | {
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| 172 | byte b = pixels[i * 4]; |
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| 173 | byte g = pixels[i * 4 + 1]; |
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| 174 | byte r = pixels[i * 4 + 2]; |
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| 175 | byte a = pixels[i * 4 + 3]; |
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| 176 | |||
| 177 | if (r != 255 || g != 255 || b != 255 || a == 255) |
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| 178 | {
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| 179 | double pR = r / 255.0; |
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| 180 | pR -= 0.5; |
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| 181 | pR *= contrast; |
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| 182 | pR += 0.5; |
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| 183 | pR *= 255; |
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| 184 | if (pR < 0) pR = 0; |
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| 185 | if (pR > 255) pR = 255; |
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| 186 | |||
| 187 | double pG = g / 255.0; |
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| 188 | pG -= 0.5; |
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| 189 | pG *= contrast; |
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| 190 | pG += 0.5; |
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| 191 | pG *= 255; |
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| 192 | if (pG < 0) pG = 0; |
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| 193 | if (pG > 255) pG = 255; |
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| 194 | |||
| 195 | double pB = b / 255.0; |
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| 196 | pB -= 0.5; |
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| 197 | pB *= contrast; |
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| 198 | pB += 0.5; |
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| 199 | pB *= 255; |
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| 200 | if (pB < 0) pB = 0; |
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| 201 | if (pB > 255) pB = 255; |
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| 202 | |||
| 203 | pixels[i * 4] = (byte)pB; |
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| 204 | pixels[i * 4 + 1] = (byte)pG; |
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| 205 | pixels[i * 4 + 2] = (byte)pR; |
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| 206 | } |
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| 207 | } |
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| 208 | |||
| 209 | return pixels; |
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| 210 | } |
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| 211 | cdfb57ff | taeseongkim | } |
| 212 | } |
