| 1 | /*␊ |
| 2 | * libeg/image.c␊ |
| 3 | * Image handling functions␊ |
| 4 | *␊ |
| 5 | * Copyright (c) 2006 Christoph Pfisterer␊ |
| 6 | * All rights reserved.␊ |
| 7 | *␊ |
| 8 | * Redistribution and use in source and binary forms, with or without␊ |
| 9 | * modification, are permitted provided that the following conditions are␊ |
| 10 | * met:␊ |
| 11 | *␊ |
| 12 | * * Redistributions of source code must retain the above copyright␊ |
| 13 | * notice, this list of conditions and the following disclaimer.␊ |
| 14 | *␊ |
| 15 | * * Redistributions in binary form must reproduce the above copyright␊ |
| 16 | * notice, this list of conditions and the following disclaimer in the␊ |
| 17 | * documentation and/or other materials provided with the␊ |
| 18 | * distribution.␊ |
| 19 | *␊ |
| 20 | * * Neither the name of Christoph Pfisterer nor the names of the␊ |
| 21 | * contributors may be used to endorse or promote products derived␊ |
| 22 | * from this software without specific prior written permission.␊ |
| 23 | *␊ |
| 24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS␊ |
| 25 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT␊ |
| 26 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR␊ |
| 27 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT␊ |
| 28 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,␊ |
| 29 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT␊ |
| 30 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,␊ |
| 31 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY␊ |
| 32 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT␊ |
| 33 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE␊ |
| 34 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.␊ |
| 35 | */␊ |
| 36 | ␊ |
| 37 | #include "libegint.h"␊ |
| 38 | #include <sys/stat.h>␊ |
| 39 | #include <pexpert/i386/boot.h>␊ |
| 40 | #include "memcpy.h" // a fast memcpy␊ |
| 41 | #include <string.h>␊ |
| 42 | ␊ |
| 43 | #define MAX_FILE_SIZE (1024*1024*1024)␊ |
| 44 | ␊ |
| 45 | ␊ |
| 46 | //␊ |
| 47 | // Basic image handling␊ |
| 48 | //␊ |
| 49 | ␊ |
| 50 | EG_IMAGE * egCreateImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha)␊ |
| 51 | {␊ |
| 52 | EG_IMAGE *NewImage;␊ |
| 53 | ␊ |
| 54 | NewImage = (EG_IMAGE *) AllocateZeroPool(sizeof(EG_IMAGE));␊ |
| 55 | if (NewImage == NULL)␊ |
| 56 | return NULL;␊ |
| 57 | NewImage->PixelData = (EG_PIXEL *) AllocateZeroPool(Width * Height * sizeof(EG_PIXEL));␊ |
| 58 | if (NewImage->PixelData == NULL) {␊ |
| 59 | FreePool(NewImage);␊ |
| 60 | return NULL;␊ |
| 61 | }␊ |
| 62 | ␊ |
| 63 | NewImage->Width = Width;␊ |
| 64 | NewImage->Height = Height;␊ |
| 65 | NewImage->HasAlpha = HasAlpha;␊ |
| 66 | NewImage->NeedFlip = TRUE;␊ |
| 67 | return NewImage;␊ |
| 68 | }␊ |
| 69 | ␊ |
| 70 | EG_IMAGE * egCreateFilledImage(IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha, IN EG_PIXEL *Color)␊ |
| 71 | {␊ |
| 72 | EG_IMAGE *NewImage;␊ |
| 73 | ␊ |
| 74 | NewImage = egCreateImage(Width, Height, HasAlpha);␊ |
| 75 | if (NewImage == NULL)␊ |
| 76 | return NULL;␊ |
| 77 | ␊ |
| 78 | egFillImage(NewImage, Color);␊ |
| 79 | return NewImage;␊ |
| 80 | }␊ |
| 81 | ␊ |
| 82 | VOID egCopyImage(IN OUT EG_IMAGE *Image1, IN EG_IMAGE *Image2)␊ |
| 83 | { ␊ |
| 84 | if (Image1 == NULL || Image2 == NULL)␊ |
| 85 | return ;␊ |
| 86 | ␊ |
| 87 | CopyMem(Image1->PixelData, Image2->PixelData, Image2->Width * Image2->Height * sizeof(EG_PIXEL));␊ |
| 88 | ␊ |
| 89 | Image1->Width = Image2->Width;␊ |
| 90 | Image1->Height = Image2->Height;␊ |
| 91 | Image1->HasAlpha = Image2->HasAlpha;␊ |
| 92 | Image1->NeedFlip = Image2->NeedFlip;␊ |
| 93 | ␊ |
| 94 | return ;␊ |
| 95 | }␊ |
| 96 | ␊ |
| 97 | EG_IMAGE * egNewImageFromImage(IN EG_IMAGE *Image)␊ |
| 98 | {␊ |
| 99 | EG_IMAGE *NewImage;␊ |
| 100 | ␊ |
| 101 | NewImage = egCreateImage(Image->Width, Image->Height, Image->HasAlpha);␊ |
| 102 | if (NewImage == NULL)␊ |
| 103 | return NULL;␊ |
| 104 | ␊ |
| 105 | egCopyImage(NewImage, Image);␊ |
| 106 | ␊ |
| 107 | return NewImage;␊ |
| 108 | }␊ |
| 109 | ␊ |
| 110 | EG_IMAGE * egCreateImageFromData(IN EG_PIXEL *PixelData, IN UINTN Width, IN UINTN Height, IN BOOLEAN HasAlpha, BOOLEAN NeedFlip)␊ |
| 111 | {␊ |
| 112 | EG_IMAGE *NewImage;␊ |
| 113 | ␊ |
| 114 | NewImage = egCreateImage(Width, Height, HasAlpha);␊ |
| 115 | if (NewImage == NULL)␊ |
| 116 | return NULL;␊ |
| 117 | ␊ |
| 118 | CopyMem(NewImage->PixelData, PixelData, Width * Height * sizeof(EG_PIXEL));␊ |
| 119 | ␊ |
| 120 | NewImage->NeedFlip = NeedFlip;␊ |
| 121 | ␊ |
| 122 | return NewImage;␊ |
| 123 | }␊ |
| 124 | ␊ |
| 125 | VOID egCopyScaledImage(IN OUT EG_IMAGE *CompImage, IN EG_IMAGE *Image)␊ |
| 126 | {␊ |
| 127 | #ifndef MAX␊ |
| 128 | #define MAX(x, y) ((x) > (y) ? (x) : (y))␊ |
| 129 | #endif␊ |
| 130 | INTN x, x1, y, y1;␊ |
| 131 | #if UNUSED␊ |
| 132 | ␉INTN x0, x2;␊ |
| 133 | ␉INTN y0, y2;␊ |
| 134 | #endif␊ |
| 135 | UINTN RatioH, RatioW, Ratio;␊ |
| 136 | EG_PIXEL *Dest;␊ |
| 137 | ␊ |
| 138 | RatioW = (CompImage->Width << 4) / Image->Width;␊ |
| 139 | RatioH = (CompImage->Height << 4) / Image->Height;␊ |
| 140 | ␊ |
| 141 | Ratio = MAX(RatioH,RatioW);␊ |
| 142 | ␊ |
| 143 | Dest = CompImage->PixelData;␊ |
| 144 | for (y = 0; y < CompImage->Height; y++) {␊ |
| 145 | y1 = (y<<4) / Ratio;␊ |
| 146 | #if UNUSED␊ |
| 147 | y0 = ((y1 > 0)?(y1-1):y1)*Image->Width;␊ |
| 148 | y2 = ((y1 < Image->Height)?(y1+1):y1)*Image->Width;␊ |
| 149 | #endif␊ |
| 150 | y1 *= Image->Width;␊ |
| 151 | for (x = 0; x < CompImage->Width; x++) {␊ |
| 152 | x1 = (x<<4) / Ratio;␊ |
| 153 | #if UNUSED␊ |
| 154 | x0 = (x1 > 0)?(x1-1):x1;␊ |
| 155 | x2 = (x1 < Image->Width)?(x1+1):x1;␊ |
| 156 | #endif␊ |
| 157 | //TODO - make sum of 5 points␊ |
| 158 | *Dest++ = Image->PixelData[x1+y1];␊ |
| 159 | }␊ |
| 160 | } ␊ |
| 161 | }␊ |
| 162 | ␊ |
| 163 | ␊ |
| 164 | EG_IMAGE * egNewScaledImage(IN EG_IMAGE *Image, IN UINTN NewW, IN UINTN NewH)␊ |
| 165 | {␊ |
| 166 | ␊ |
| 167 | EG_IMAGE *NewImage;␊ |
| 168 | ␊ |
| 169 | NewImage = egCreateImage(NewW, NewH, Image->HasAlpha);␊ |
| 170 | if (NewImage == NULL)␊ |
| 171 | return NULL;␊ |
| 172 | ␊ |
| 173 | egCopyScaledImage(NewImage,Image); ␊ |
| 174 | ␊ |
| 175 | return NewImage;␊ |
| 176 | }␊ |
| 177 | ␊ |
| 178 | VOID egFreeImage(IN EG_IMAGE *Image)␊ |
| 179 | {␊ |
| 180 | if (Image != NULL) {␊ |
| 181 | if (Image->PixelData != NULL)␊ |
| 182 | FreePool(Image->PixelData);␊ |
| 183 | FreePool(Image);␊ |
| 184 | }␊ |
| 185 | }␊ |
| 186 | ␊ |
| 187 | //␊ |
| 188 | // Basic file operations␊ |
| 189 | //␊ |
| 190 | ␊ |
| 191 | EFI_STATUS egLoadFile(IN CHAR16 *FileName,␊ |
| 192 | OUT UINT8 **FileData, OUT UINTN *FileDataLength)␊ |
| 193 | {␊ |
| 194 | FILE␉␉␉␉*FileHandle;␊ |
| 195 | UINT64 ReadSize;␊ |
| 196 | UINTN BufferSize;␊ |
| 197 | UINT8 *Buffer;␊ |
| 198 | ␉CHAR8␉␉␉␉FileName8[1024];␊ |
| 199 | ␉struct␉␉␉␉stat buf;␊ |
| 200 | ␊ |
| 201 | ␉UnicodeStrToAsciiStr(FileName, FileName8);␊ |
| 202 | ␊ |
| 203 | FileHandle = fopen(FileName8, "rb");␊ |
| 204 | if (!FileHandle)␊ |
| 205 | return EFI_NOT_FOUND; ␊ |
| 206 | ␉printf("file opened\n");␊ |
| 207 | ␊ |
| 208 | fstat(fileno(FileHandle), &buf);␉␊ |
| 209 | ReadSize = buf.st_size;␉␊ |
| 210 | ␉if (!ReadSize)␊ |
| 211 | ␉{␊ |
| 212 | ␉␉fclose(FileHandle);␊ |
| 213 | ␉␉return EFI_LOAD_ERROR;␊ |
| 214 | ␉} ␊ |
| 215 | ␉else if (ReadSize > MAX_FILE_SIZE)␊ |
| 216 | ReadSize = MAX_FILE_SIZE;␊ |
| 217 | ␉printf("file size = %d\n", (INTN)ReadSize);␊ |
| 218 | ␊ |
| 219 | BufferSize = (UINTN)ReadSize; // was limited to 1 GB above, so this is safe␊ |
| 220 | Buffer = (UINT8 *) AllocatePool(BufferSize);␊ |
| 221 | if (Buffer == NULL) {␊ |
| 222 | fclose(FileHandle);␊ |
| 223 | return EFI_OUT_OF_RESOURCES;␊ |
| 224 | }␊ |
| 225 | ␉printf("AllocatePool = %p\n", (VOID*)Buffer);␊ |
| 226 | ␊ |
| 227 | ␉ReadSize = fread(Buffer, 1, BufferSize, FileHandle);␊ |
| 228 | fclose(FileHandle);␊ |
| 229 | if (BufferSize != ReadSize) {␊ |
| 230 | FreePool(Buffer);␊ |
| 231 | return EFI_BAD_BUFFER_SIZE;␊ |
| 232 | }␊ |
| 233 | ␉printf("Buffer read successfuly\n");␊ |
| 234 | ␊ |
| 235 | *FileData = Buffer;␊ |
| 236 | *FileDataLength = BufferSize;␊ |
| 237 | return EFI_SUCCESS;␊ |
| 238 | }␊ |
| 239 | ␊ |
| 240 | //␊ |
| 241 | // Loading images from files and embedded data␊ |
| 242 | //␊ |
| 243 | ␊ |
| 244 | static CHAR16 * egFindExtension(IN CHAR16 *FileName)␊ |
| 245 | {␊ |
| 246 | INTN i;␊ |
| 247 | ␊ |
| 248 | for (i = StrLen(FileName); i >= 0; i--) {␊ |
| 249 | if (FileName[i] == '.')␊ |
| 250 | return FileName + i + 1;␊ |
| 251 | if (FileName[i] == '/' || FileName[i] == '\\')␊ |
| 252 | break;␊ |
| 253 | }␊ |
| 254 | return FileName + StrLen(FileName);␊ |
| 255 | }␊ |
| 256 | ␊ |
| 257 | static EG_IMAGE * egDecodeAny(IN UINT8 *FileData, IN UINTN FileDataLength,␊ |
| 258 | IN CHAR16 *Format, IN UINTN IconSize, IN BOOLEAN WantAlpha)␊ |
| 259 | {␊ |
| 260 | EG_DECODE_FUNC DecodeFunc;␊ |
| 261 | EG_IMAGE *NewImage;␊ |
| 262 | ␊ |
| 263 | // dispatch by extension␊ |
| 264 | DecodeFunc = NULL;␊ |
| 265 | if (StrCmp(Format, L"BMP") == 0)␊ |
| 266 | DecodeFunc = egDecodeBMP;␊ |
| 267 | else if (StrCmp(Format, L"ICNS") == 0)␊ |
| 268 | DecodeFunc = egDecodeICNS;␊ |
| 269 | else if (StrCmp(Format, L"PNG" ) == 0)␊ |
| 270 | DecodeFunc = egDecodePNG;␊ |
| 271 | ␊ |
| 272 | if (DecodeFunc == NULL)␊ |
| 273 | return NULL;␊ |
| 274 | ␊ |
| 275 | // decode it␊ |
| 276 | NewImage = DecodeFunc(FileData, FileDataLength, IconSize, WantAlpha);␊ |
| 277 | ␊ |
| 278 | return NewImage;␊ |
| 279 | }␊ |
| 280 | ␊ |
| 281 | EG_IMAGE * egLoadImage(IN CHAR16 *FilePath, IN BOOLEAN WantAlpha)␊ |
| 282 | {␊ |
| 283 | EFI_STATUS Status;␊ |
| 284 | UINT8 *FileData;␊ |
| 285 | UINTN FileDataLength;␊ |
| 286 | EG_IMAGE *NewImage;␊ |
| 287 | ␊ |
| 288 | if (FilePath == NULL)␊ |
| 289 | return NULL;␊ |
| 290 | ␊ |
| 291 | // load file␊ |
| 292 | ␉printf("load file\n");␊ |
| 293 | Status = egLoadFile(FilePath, &FileData, &FileDataLength);␊ |
| 294 | if (EFI_ERROR(Status))␊ |
| 295 | return NULL;␊ |
| 296 | ␊ |
| 297 | // decode it␊ |
| 298 | ␉printf("decode it\n");␊ |
| 299 | NewImage = egDecodeAny(FileData, FileDataLength, egFindExtension(FilePath), 128, WantAlpha);␊ |
| 300 | FreePool(FileData);␊ |
| 301 | ␊ |
| 302 | return NewImage;␊ |
| 303 | }␊ |
| 304 | ␊ |
| 305 | EG_IMAGE * egLoadIcon(IN CHAR16 *FilePath, IN UINTN IconSize)␊ |
| 306 | {␊ |
| 307 | EFI_STATUS Status;␊ |
| 308 | UINT8 *FileData;␊ |
| 309 | UINTN FileDataLength;␊ |
| 310 | EG_IMAGE *NewImage;␊ |
| 311 | ␊ |
| 312 | if (FilePath == NULL)␊ |
| 313 | return NULL;␊ |
| 314 | ␊ |
| 315 | // load file␊ |
| 316 | Status = egLoadFile(FilePath, &FileData, &FileDataLength);␊ |
| 317 | if (EFI_ERROR(Status))␊ |
| 318 | return NULL;␊ |
| 319 | ␊ |
| 320 | // decode it␊ |
| 321 | NewImage = egDecodeAny(FileData, FileDataLength, egFindExtension(FilePath), IconSize, TRUE);␊ |
| 322 | FreePool(FileData);␊ |
| 323 | ␊ |
| 324 | return NewImage;␊ |
| 325 | }␊ |
| 326 | ␊ |
| 327 | EG_IMAGE * egDecodeImage(IN UINT8 *FileData, IN UINTN FileDataLength, IN CHAR16 *Format, IN BOOLEAN WantAlpha)␊ |
| 328 | {␊ |
| 329 | return egDecodeAny(FileData, FileDataLength, Format, 128, WantAlpha);␊ |
| 330 | }␊ |
| 331 | ␊ |
| 332 | EG_IMAGE * egPrepareEmbeddedImage(IN EG_EMBEDDED_IMAGE *EmbeddedImage, IN BOOLEAN WantAlpha)␊ |
| 333 | {␊ |
| 334 | EG_IMAGE *NewImage;␊ |
| 335 | UINT8 *CompData;␊ |
| 336 | UINTN CompLen;␊ |
| 337 | UINTN PixelCount;␊ |
| 338 | ␊ |
| 339 | // sanity check␊ |
| 340 | if (EmbeddedImage->PixelMode > EG_MAX_EIPIXELMODE ||␊ |
| 341 | (EmbeddedImage->CompressMode != EG_EICOMPMODE_NONE && EmbeddedImage->CompressMode != EG_EICOMPMODE_RLE))␊ |
| 342 | return NULL;␊ |
| 343 | ␊ |
| 344 | // allocate image structure and pixel buffer␊ |
| 345 | NewImage = egCreateImage(EmbeddedImage->Width, EmbeddedImage->Height, WantAlpha);␊ |
| 346 | if (NewImage == NULL)␊ |
| 347 | return NULL;␊ |
| 348 | ␊ |
| 349 | CompData = (UINT8 *)EmbeddedImage->Data; // drop const␊ |
| 350 | CompLen = EmbeddedImage->DataLength;␊ |
| 351 | PixelCount = EmbeddedImage->Width * EmbeddedImage->Height;␊ |
| 352 | ␊ |
| 353 | // FUTURE: for EG_EICOMPMODE_EFICOMPRESS, decompress whole data block here␊ |
| 354 | ␊ |
| 355 | if (EmbeddedImage->PixelMode == EG_EIPIXELMODE_GRAY ||␊ |
| 356 | EmbeddedImage->PixelMode == EG_EIPIXELMODE_GRAY_ALPHA) {␊ |
| 357 | ␊ |
| 358 | // copy grayscale plane and expand␊ |
| 359 | if (EmbeddedImage->CompressMode == EG_EICOMPMODE_RLE) {␊ |
| 360 | egDecompressIcnsRLE(&CompData, &CompLen, PLPTR(NewImage, r), PixelCount);␊ |
| 361 | } else {␊ |
| 362 | egInsertPlane(CompData, PLPTR(NewImage, r), PixelCount);␊ |
| 363 | CompData += PixelCount;␊ |
| 364 | }␊ |
| 365 | egCopyPlane(PLPTR(NewImage, r), PLPTR(NewImage, g), PixelCount);␊ |
| 366 | egCopyPlane(PLPTR(NewImage, r), PLPTR(NewImage, b), PixelCount);␊ |
| 367 | ␊ |
| 368 | } else if (EmbeddedImage->PixelMode == EG_EIPIXELMODE_COLOR ||␊ |
| 369 | EmbeddedImage->PixelMode == EG_EIPIXELMODE_COLOR_ALPHA) {␊ |
| 370 | ␊ |
| 371 | // copy color planes␊ |
| 372 | if (EmbeddedImage->CompressMode == EG_EICOMPMODE_RLE) {␊ |
| 373 | egDecompressIcnsRLE(&CompData, &CompLen, PLPTR(NewImage, r), PixelCount);␊ |
| 374 | egDecompressIcnsRLE(&CompData, &CompLen, PLPTR(NewImage, g), PixelCount);␊ |
| 375 | egDecompressIcnsRLE(&CompData, &CompLen, PLPTR(NewImage, b), PixelCount);␊ |
| 376 | } else {␊ |
| 377 | egInsertPlane(CompData, PLPTR(NewImage, r), PixelCount);␊ |
| 378 | CompData += PixelCount;␊ |
| 379 | egInsertPlane(CompData, PLPTR(NewImage, g), PixelCount);␊ |
| 380 | CompData += PixelCount;␊ |
| 381 | egInsertPlane(CompData, PLPTR(NewImage, b), PixelCount);␊ |
| 382 | CompData += PixelCount;␊ |
| 383 | }␊ |
| 384 | ␊ |
| 385 | } else {␊ |
| 386 | ␊ |
| 387 | // set color planes to black␊ |
| 388 | egSetPlane(PLPTR(NewImage, r), 0, PixelCount);␊ |
| 389 | egSetPlane(PLPTR(NewImage, g), 0, PixelCount);␊ |
| 390 | egSetPlane(PLPTR(NewImage, b), 0, PixelCount);␊ |
| 391 | ␊ |
| 392 | }␊ |
| 393 | ␊ |
| 394 | if (WantAlpha && (EmbeddedImage->PixelMode == EG_EIPIXELMODE_GRAY_ALPHA ||␊ |
| 395 | EmbeddedImage->PixelMode == EG_EIPIXELMODE_COLOR_ALPHA ||␊ |
| 396 | EmbeddedImage->PixelMode == EG_EIPIXELMODE_ALPHA)) {␊ |
| 397 | ␊ |
| 398 | // copy alpha plane␊ |
| 399 | if (EmbeddedImage->CompressMode == EG_EICOMPMODE_RLE) {␊ |
| 400 | egDecompressIcnsRLE(&CompData, &CompLen, PLPTR(NewImage, a), PixelCount);␊ |
| 401 | } else {␊ |
| 402 | egInsertPlane(CompData, PLPTR(NewImage, a), PixelCount);␊ |
| 403 | CompData += PixelCount;␊ |
| 404 | }␊ |
| 405 | ␊ |
| 406 | } else {␊ |
| 407 | egSetPlane(PLPTR(NewImage, a), WantAlpha ? 255 : 0, PixelCount);␊ |
| 408 | }␊ |
| 409 | ␊ |
| 410 | return NewImage;␊ |
| 411 | }␊ |
| 412 | ␊ |
| 413 | //␊ |
| 414 | // Compositing␊ |
| 415 | //␊ |
| 416 | ␊ |
| 417 | VOID egRestrictImageArea(IN EG_IMAGE *Image,␊ |
| 418 | ␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN AreaPosX, IN UINTN AreaPosY,␊ |
| 419 | ␉␉␉␉␉␉␉␉␉␉␉␉␉␉␉ IN OUT UINTN *AreaWidth, IN OUT UINTN *AreaHeight)␊ |
| 420 | {␊ |
| 421 | if (AreaPosX >= Image->Width || AreaPosY >= Image->Height) {␊ |
| 422 | // out of bounds, operation has no effect␊ |
| 423 | *AreaWidth = 0;␊ |
| 424 | *AreaHeight = 0;␊ |
| 425 | } else {␊ |
| 426 | // calculate affected area␊ |
| 427 | if (*AreaWidth > Image->Width - AreaPosX)␊ |
| 428 | *AreaWidth = Image->Width - AreaPosX;␊ |
| 429 | if (*AreaHeight > Image->Height - AreaPosY)␊ |
| 430 | *AreaHeight = Image->Height - AreaPosY;␊ |
| 431 | }␊ |
| 432 | }␊ |
| 433 | ␊ |
| 434 | VOID egFillImage(IN OUT EG_IMAGE *CompImage, IN EG_PIXEL *Color)␊ |
| 435 | {␊ |
| 436 | UINTN i;␊ |
| 437 | EG_PIXEL FillColor;␊ |
| 438 | EG_PIXEL *PixelPtr;␊ |
| 439 | ␊ |
| 440 | FillColor = *Color;␊ |
| 441 | if (!CompImage->HasAlpha)␊ |
| 442 | FillColor.a = 0;␊ |
| 443 | ␊ |
| 444 | PixelPtr = CompImage->PixelData;␊ |
| 445 | for (i = 0; i < CompImage->Width * CompImage->Height; i++, PixelPtr++)␊ |
| 446 | *PixelPtr = FillColor;␊ |
| 447 | }␊ |
| 448 | ␊ |
| 449 | VOID egFillImageArea(IN OUT EG_IMAGE *CompImage,␊ |
| 450 | ␉␉␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN AreaPosX, IN UINTN AreaPosY,␊ |
| 451 | ␉␉␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN AreaWidth, IN UINTN AreaHeight,␊ |
| 452 | ␉␉␉␉␉␉␉␉␉␉␉␉␉␉ IN EG_PIXEL *Color)␊ |
| 453 | {␊ |
| 454 | UINTN x, y;␊ |
| 455 | EG_PIXEL FillColor;␊ |
| 456 | EG_PIXEL *PixelPtr;␊ |
| 457 | EG_PIXEL *PixelBasePtr;␊ |
| 458 | ␊ |
| 459 | egRestrictImageArea(CompImage, AreaPosX, AreaPosY, &AreaWidth, &AreaHeight);␊ |
| 460 | ␊ |
| 461 | if (AreaWidth > 0) {␊ |
| 462 | FillColor = *Color;␊ |
| 463 | if (!CompImage->HasAlpha)␊ |
| 464 | FillColor.a = 0;␊ |
| 465 | ␊ |
| 466 | PixelBasePtr = CompImage->PixelData + AreaPosY * CompImage->Width + AreaPosX;␊ |
| 467 | for (y = 0; y < AreaHeight; y++) {␊ |
| 468 | PixelPtr = PixelBasePtr;␊ |
| 469 | for (x = 0; x < AreaWidth; x++, PixelPtr++)␊ |
| 470 | *PixelPtr = FillColor;␊ |
| 471 | PixelBasePtr += CompImage->Width;␊ |
| 472 | }␊ |
| 473 | }␊ |
| 474 | }␊ |
| 475 | ␊ |
| 476 | VOID egRawCopy(IN OUT EG_PIXEL *CompBasePtr, IN EG_PIXEL *TopBasePtr,␊ |
| 477 | ␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN Width, IN UINTN Height,␊ |
| 478 | ␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN CompLineOffset, IN UINTN TopLineOffset)␊ |
| 479 | {␊ |
| 480 | UINTN x, y;␊ |
| 481 | EG_PIXEL *TopPtr, *CompPtr;␊ |
| 482 | ␊ |
| 483 | for (y = 0; y < Height; y++) {␊ |
| 484 | TopPtr = TopBasePtr;␊ |
| 485 | CompPtr = CompBasePtr;␊ |
| 486 | for (x = 0; x < Width; x++) {␊ |
| 487 | *CompPtr = *TopPtr;␊ |
| 488 | TopPtr++, CompPtr++;␊ |
| 489 | }␊ |
| 490 | TopBasePtr += TopLineOffset;␊ |
| 491 | CompBasePtr += CompLineOffset;␊ |
| 492 | }␊ |
| 493 | }␊ |
| 494 | ␊ |
| 495 | VOID egRawCompose(IN OUT EG_PIXEL *CompBasePtr, IN EG_PIXEL *TopBasePtr,␊ |
| 496 | ␉␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN Width, IN UINTN Height,␊ |
| 497 | ␉␉␉␉␉␉␉␉␉␉␉␉␉ IN UINTN CompLineOffset, IN UINTN TopLineOffset)␊ |
| 498 | {␊ |
| 499 | UINTN x, y;␊ |
| 500 | EG_PIXEL *TopPtr, *CompPtr;␊ |
| 501 | UINTN Alpha;␊ |
| 502 | UINTN RevAlpha;␊ |
| 503 | UINTN Temp;␊ |
| 504 | ␊ |
| 505 | for (y = 0; y < Height; y++) {␊ |
| 506 | TopPtr = TopBasePtr;␊ |
| 507 | CompPtr = CompBasePtr;␊ |
| 508 | for (x = 0; x < Width; x++) {␊ |
| 509 | Alpha = TopPtr->a;␊ |
| 510 | RevAlpha = 255 - Alpha;␊ |
| 511 | Temp = (UINTN)CompPtr->b * RevAlpha + (UINTN)TopPtr->b * Alpha + 0x80;␊ |
| 512 | CompPtr->b = (Temp + (Temp >> 8)) >> 8;␊ |
| 513 | Temp = (UINTN)CompPtr->g * RevAlpha + (UINTN)TopPtr->g * Alpha + 0x80;␊ |
| 514 | CompPtr->g = (Temp + (Temp >> 8)) >> 8;␊ |
| 515 | Temp = (UINTN)CompPtr->r * RevAlpha + (UINTN)TopPtr->r * Alpha + 0x80;␊ |
| 516 | CompPtr->r = (Temp + (Temp >> 8)) >> 8;␊ |
| 517 | /*␊ |
| 518 | ␉␉␉ CompPtr->b = ((UINTN)CompPtr->b * RevAlpha + (UINTN)TopPtr->b * Alpha) / 255;␊ |
| 519 | ␉␉␉ CompPtr->g = ((UINTN)CompPtr->g * RevAlpha + (UINTN)TopPtr->g * Alpha) / 255;␊ |
| 520 | ␉␉␉ CompPtr->r = ((UINTN)CompPtr->r * RevAlpha + (UINTN)TopPtr->r * Alpha) / 255;␊ |
| 521 | ␉␉␉ */␊ |
| 522 | TopPtr++, CompPtr++;␊ |
| 523 | }␊ |
| 524 | TopBasePtr += TopLineOffset;␊ |
| 525 | CompBasePtr += CompLineOffset;␊ |
| 526 | }␊ |
| 527 | }␊ |
| 528 | ␊ |
| 529 | VOID egComposeImage(IN OUT EG_IMAGE *CompImage, IN EG_IMAGE *TopImage, IN UINTN PosX, IN UINTN PosY)␊ |
| 530 | {␊ |
| 531 | UINTN CompWidth, CompHeight;␊ |
| 532 | ␊ |
| 533 | CompWidth = TopImage->Width;␊ |
| 534 | CompHeight = TopImage->Height;␊ |
| 535 | egRestrictImageArea(CompImage, PosX, PosY, &CompWidth, &CompHeight);␊ |
| 536 | ␊ |
| 537 | // compose␊ |
| 538 | if (CompWidth > 0) {␊ |
| 539 | if (CompImage->HasAlpha) {␊ |
| 540 | CompImage->HasAlpha = FALSE;␊ |
| 541 | egSetPlane(PLPTR(CompImage, a), 0, CompImage->Width * CompImage->Height);␊ |
| 542 | }␊ |
| 543 | ␊ |
| 544 | if (TopImage->HasAlpha)␊ |
| 545 | egRawCompose(CompImage->PixelData + PosY * CompImage->Width + PosX, TopImage->PixelData,␊ |
| 546 | CompWidth, CompHeight, CompImage->Width, TopImage->Width);␊ |
| 547 | else␊ |
| 548 | egRawCopy(CompImage->PixelData + PosY * CompImage->Width + PosX, TopImage->PixelData,␊ |
| 549 | CompWidth, CompHeight, CompImage->Width, TopImage->Width);␊ |
| 550 | }␊ |
| 551 | }␊ |
| 552 | ␊ |
| 553 | BOOLEAN egComposeImageStretched(IN OUT EG_IMAGE *CompImage, IN EG_IMAGE *TopImage)␊ |
| 554 | {␊ |
| 555 | #define MARGIN 0␊ |
| 556 | UINT8␉␉*pStretchedImage;␊ |
| 557 | UINT8␉␉*pImg;␊ |
| 558 | ␉UINT8␉␉*pbImage , *pDiData;␊ |
| 559 | UINTN cImgChannels; ␊ |
| 560 | ␉UINTN␉␉deltaNewSize, deltaWinSize;␊ |
| 561 | ␉UINTN␉␉cxImgPos, cyImgPos;␊ |
| 562 | ␉UINTN␉␉xOld, yOld;␊ |
| 563 | UINTN␉␉xNew, yNew;␊ |
| 564 | ␉UINTN␉␉xImg, yImg;␊ |
| 565 | UINTN␉␉xWin, yWin;␊ |
| 566 | ␉UINT8␉␉r, g, b, a;␊ |
| 567 | ␉UINTN␉␉cxImgSize, cyImgSize;␊ |
| 568 | ␉UINT8␉␉*src, *dst;␊ |
| 569 | ␉const INT32 cDIChannels = 3;␊ |
| 570 | UINT16 wImgRowBytes;␊ |
| 571 | UINT16 wDIRowBytes;␊ |
| 572 | ␉␊ |
| 573 | ␉␊ |
| 574 | ␉deltaWinSize = MAX(CompImage->Width,CompImage->Height); ␊ |
| 575 | ␉cxImgSize = TopImage->Width;␊ |
| 576 | ␉cyImgSize = TopImage->Height;␊ |
| 577 | ␉pbImage␉ = (UINT8*)TopImage->PixelData;␊ |
| 578 | ␉pDiData = (UINT8*)CompImage->PixelData;␉␊ |
| 579 | ␉␊ |
| 580 | ␉{␊ |
| 581 | deltaNewSize = deltaWinSize - 2 * MARGIN;␊ |
| 582 | cImgChannels = (TopImage->HasAlpha) ? 4 : 3;␉␉␊ |
| 583 | ␊ |
| 584 | ␊ |
| 585 | // stretch the image to it's window determined size␊ |
| 586 | ␊ |
| 587 | // the following two are the same, but the first has side-effects␊ |
| 588 | // because of rounding␊ |
| 589 | // if ((deltaNewSize / deltaNewSize) > (cyImgSize / cxImgSize))␊ |
| 590 | if ((deltaNewSize * cxImgSize) > (cyImgSize * deltaNewSize))␊ |
| 591 | {␊ |
| 592 | deltaNewSize = deltaNewSize * cyImgSize / cxImgSize;␊ |
| 593 | cxImgPos = MARGIN;␊ |
| 594 | cyImgPos = (deltaWinSize - deltaNewSize) / 2;␊ |
| 595 | }␊ |
| 596 | else␊ |
| 597 | {␊ |
| 598 | deltaNewSize = deltaNewSize * cxImgSize / cyImgSize;␊ |
| 599 | cyImgPos = MARGIN;␊ |
| 600 | cxImgPos = (deltaWinSize - deltaNewSize) / 2;␊ |
| 601 | }␊ |
| 602 | ␊ |
| 603 | pStretchedImage = AllocatePool (cImgChannels * deltaNewSize * deltaNewSize);␊ |
| 604 | if (!pStretchedImage)␊ |
| 605 | {␊ |
| 606 | return FALSE;␊ |
| 607 | }␊ |
| 608 | ␉␉pImg = pStretchedImage;␊ |
| 609 | ␊ |
| 610 | for (yNew = 0; yNew < deltaNewSize; yNew++)␊ |
| 611 | {␊ |
| 612 | yOld = yNew * cyImgSize / deltaNewSize;␊ |
| 613 | for (xNew = 0; xNew < deltaNewSize; xNew++)␊ |
| 614 | {␊ |
| 615 | xOld = xNew * cxImgSize / deltaNewSize;␊ |
| 616 | ␊ |
| 617 | r = *(pbImage + cImgChannels * ((yOld * cxImgSize) + xOld) + 0);␊ |
| 618 | g = *(pbImage + cImgChannels * ((yOld * cxImgSize) + xOld) + 1);␊ |
| 619 | b = *(pbImage + cImgChannels * ((yOld * cxImgSize) + xOld) + 2);␊ |
| 620 | *pImg++ = r;␊ |
| 621 | *pImg++ = g;␊ |
| 622 | *pImg++ = b;␊ |
| 623 | if (cImgChannels == 4)␊ |
| 624 | {␊ |
| 625 | a = *(pbImage + cImgChannels * ((yOld * cxImgSize) + xOld)␊ |
| 626 | + 3);␊ |
| 627 | *pImg++ = a;␊ |
| 628 | }␊ |
| 629 | }␊ |
| 630 | }␊ |
| 631 | ␉␉␊ |
| 632 | ␉␉// calculate row-bytes␊ |
| 633 | ␊ |
| 634 | wImgRowBytes = cImgChannels * deltaNewSize;␊ |
| 635 | wDIRowBytes = (unsigned short) ((cDIChannels * deltaWinSize + 3L) >> 2) << 2;␊ |
| 636 | ␊ |
| 637 | // copy image to screen␊ |
| 638 | ␉␉␊ |
| 639 | for (yImg = 0, yWin = cyImgPos; yImg < deltaNewSize; yImg++, yWin++)␊ |
| 640 | {␊ |
| 641 | if (yWin >= CompImage->Width - cyImgPos)␊ |
| 642 | break;␊ |
| 643 | src = pStretchedImage + yImg * wImgRowBytes;␊ |
| 644 | dst = pDiData + yWin * wDIRowBytes + cxImgPos * cDIChannels;␊ |
| 645 | ␊ |
| 646 | for (xImg = 0, xWin = cxImgPos; xImg < deltaNewSize; xImg++, xWin++)␊ |
| 647 | {␊ |
| 648 | if (xWin >= deltaWinSize - cxImgPos)␊ |
| 649 | break;␊ |
| 650 | r = *src++;␊ |
| 651 | g = *src++;␊ |
| 652 | b = *src++;␊ |
| 653 | *dst++ = b; /* note the reverse order */␊ |
| 654 | *dst++ = g;␊ |
| 655 | *dst++ = r;␊ |
| 656 | if (cImgChannels == 4)␊ |
| 657 | {␊ |
| 658 | a = *src++;␊ |
| 659 | }␊ |
| 660 | }␊ |
| 661 | }␉␉␊ |
| 662 | ␊ |
| 663 | // free memory␊ |
| 664 | ␊ |
| 665 | if (pStretchedImage != NULL)␊ |
| 666 | {␊ |
| 667 | FreePool (pStretchedImage);␊ |
| 668 | pStretchedImage = NULL;␊ |
| 669 | }␉␉␊ |
| 670 | ␊ |
| 671 | }␊ |
| 672 | ␉return TRUE;␊ |
| 673 | ␊ |
| 674 | }␊ |
| 675 | ␊ |
| 676 | VOID egFlipRB(IN EG_IMAGE *Image)␊ |
| 677 | {␉␊ |
| 678 | ␉UINT32 x;␊ |
| 679 | register UINT8 tempB;␊ |
| 680 | if (Image->NeedFlip == TRUE)␊ |
| 681 | {␊ |
| 682 | for (x = 0; x < (unsigned long)(Image->Height) * (Image->Width) ; x++) {␊ |
| 683 | tempB = Image->PixelData[x].b;␊ |
| 684 | Image->PixelData[x].b = Image->PixelData[x].r;␊ |
| 685 | Image->PixelData[x].r = tempB;␊ |
| 686 | }␊ |
| 687 | Image->NeedFlip = FALSE;␊ |
| 688 | }␊ |
| 689 | }␊ |
| 690 | ␊ |
| 691 | EG_IMAGE * egEnsureImageSize(IN EG_IMAGE *Image, IN UINTN Width, IN UINTN Height, IN EG_PIXEL *Color)␊ |
| 692 | {␊ |
| 693 | EG_IMAGE *NewImage;␊ |
| 694 | ␉␊ |
| 695 | if (Image == NULL)␊ |
| 696 | return NULL;␊ |
| 697 | if (Image->Width == Width && Image->Height == Height)␊ |
| 698 | return Image;␊ |
| 699 | ␊ |
| 700 | NewImage = egCreateFilledImage(Width, Height, Image->HasAlpha, Color);␊ |
| 701 | if (NewImage == NULL) {␊ |
| 702 | egFreeImage(Image);␊ |
| 703 | return NULL;␊ |
| 704 | }␊ |
| 705 | egComposeImage(NewImage, Image, 0, 0);␊ |
| 706 | egFreeImage(Image);␊ |
| 707 | ␊ |
| 708 | return NewImage;␊ |
| 709 | }␊ |
| 710 | ␊ |
| 711 | //␊ |
| 712 | // misc internal functions␊ |
| 713 | //␊ |
| 714 | ␊ |
| 715 | VOID egInsertPlane(IN UINT8 *SrcDataPtr, IN UINT8 *DestPlanePtr, IN UINTN PixelCount)␊ |
| 716 | {␊ |
| 717 | UINTN i;␊ |
| 718 | ␊ |
| 719 | for (i = 0; i < PixelCount; i++) {␊ |
| 720 | *DestPlanePtr = *SrcDataPtr++;␊ |
| 721 | DestPlanePtr += 4;␊ |
| 722 | }␊ |
| 723 | }␊ |
| 724 | ␊ |
| 725 | VOID egSetPlane(IN UINT8 *DestPlanePtr, IN UINT8 Value, IN UINTN PixelCount)␊ |
| 726 | {␊ |
| 727 | UINTN i;␊ |
| 728 | ␊ |
| 729 | for (i = 0; i < PixelCount; i++) {␊ |
| 730 | *DestPlanePtr = Value;␊ |
| 731 | DestPlanePtr += 4;␊ |
| 732 | }␊ |
| 733 | }␊ |
| 734 | ␊ |
| 735 | VOID egCopyPlane(IN UINT8 *SrcPlanePtr, IN UINT8 *DestPlanePtr, IN UINTN PixelCount)␊ |
| 736 | {␊ |
| 737 | UINTN i;␊ |
| 738 | ␊ |
| 739 | for (i = 0; i < PixelCount; i++) {␊ |
| 740 | *DestPlanePtr = *SrcPlanePtr;␊ |
| 741 | DestPlanePtr += 4, SrcPlanePtr += 4;␊ |
| 742 | }␊ |
| 743 | }␊ |
| 744 | ␊ |
| 745 | ␊ |
| 746 | ␊ |
| 747 | ␊ |
| 748 | #define VIDEO(x) (((boot_args*)getBootArgs())->Video.v_ ## x)␊ |
| 749 | //#define vram VIDEO(baseAddr)␊ |
| 750 | ␊ |
| 751 | VOID egVramWrite (IN VOID *data, IN UINTN width, IN UINTN Height, IN UINTN PosX, IN UINTN PosY, UINTN BytesPerScanLine)␊ |
| 752 | {␊ |
| 753 | ␊ |
| 754 | UINT8 *vram = (UINT8 *)VIDEO(baseAddr);␊ |
| 755 | UINTN depth = (UINTN)VIDEO (depth);␊ |
| 756 | UINTN rowBytes = (UINTN)VIDEO (rowBytes);␊ |
| 757 | UINTN vHeight = (UINTN)VIDEO (height);␊ |
| 758 | UINTN vWidth ;␊ |
| 759 | ␊ |
| 760 | ␉if (depth == 0x20 && rowBytes == (UINT32)width * BytesPerScanLine)␊ |
| 761 | ␉␉memcpy((CHAR8 *)vram, data, rowBytes * vHeight);␊ |
| 762 | ␉else␊ |
| 763 | ␉{␊ |
| 764 | ␉␉UINT32 r, g, b;␊ |
| 765 | ␉␉UINT32 i, j;␊ |
| 766 | ␊ |
| 767 | UINT32 x, y;␊ |
| 768 | vWidth = (UINTN)VIDEO (width);␊ |
| 769 | ␊ |
| 770 | x = MIN(vWidth, width);␊ |
| 771 | y = MIN(vHeight, Height);␊ |
| 772 | ␊ |
| 773 | ␉␉for (i = PosY; i < y; i++)␊ |
| 774 | ␉␉␉for (j = PosX; j < x; j++)␊ |
| 775 | ␉␉␉{␊ |
| 776 | ␉␉␉␉b = ((UINT8 *) data)[4*i*width + 4*j];␊ |
| 777 | ␉␉␉␉g = ((UINT8 *) data)[4*i*width + 4*j + 1];␊ |
| 778 | ␉␉␉␉r = ((UINT8 *) data)[4*i*width + 4*j + 2];␊ |
| 779 | ␉␉␉␉switch (depth)␊ |
| 780 | ␉␉␉␉{␊ |
| 781 | ␉␉␉␉␉case 32:␊ |
| 782 | ␊ |
| 783 | ␉␉␉␉␉␉*(UINT32 *)(((UINT8 *)vram)+i* x*BytesPerScanLine + j*4) = (b&0xff) | ((g&0xff)<<8) | ((r&0xff)<<16);␊ |
| 784 | ␉␉␉␉␉␉break;␊ |
| 785 | ␉␉␉␉␉case 24:␊ |
| 786 | *(UINT32 *)(((UINT8 *)vram)+i*x*BytesPerScanLine + j*3) = ((*(UINT32 *)(((UINT8 *)vram)+i*x*BytesPerScanLine + j*3))&0xff000000)␊ |
| 787 | ␉␉␉␉␉␉| (b&0xff) | ((g&0xff)<<8) | ((r&0xff)<<16);␊ |
| 788 | ␉␉␉␉␉␉break;␊ |
| 789 | ␉␉␉␉␉case 16:␊ |
| 790 | ␉␉␉␉␉␉// Somehow 16-bit is always 15-bits really␊ |
| 791 | ␉␉␉␉␉␉//␉␉␉␉␉␉*(uint16_t *)(((uint8_t *)vram)+i*VIDEO (rowBytes) + j*2) = ((b&0xf8)>>3) | ((g&0xfc)<<3) | ((r&0xf8)<<8);␊ |
| 792 | ␉␉␉␉␉␉//␉␉␉␉␉␉break;␊ |
| 793 | ␉␉␉␉␉case 15:␊ |
| 794 | ␊ |
| 795 | ␉␉␉␉␉␉*(UINT16 *)(((UINT8 *)vram)+i*x*BytesPerScanLine + j*2) = ((b&0xf8)>>3) | ((g&0xf8)<<2) | ((r&0xf8)<<7);␊ |
| 796 | ␉␉␉␉␉␉break;␊ |
| 797 | ␉␉␉␉␉default:␊ |
| 798 | ␉␉␉␉␉␉break;␊ |
| 799 | ␉␉␉␉}␊ |
| 800 | ␉␉␉}␊ |
| 801 | ␉}␊ |
| 802 | } |
