2 * Copyright (c) 2021 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 #include <dali/internal/imaging/common/loader-bmp.h>
20 #include <dali/devel-api/adaptor-framework/pixel-buffer.h>
21 #include <dali/integration-api/debug.h>
22 #include <dali/public-api/common/vector-wrapper.h>
26 namespace TizenPlatform
30 const unsigned int FileHeaderOffsetOfBF32V4 = 0x7A;
31 const unsigned int MaskForBFRGB565 = 0x80;
32 const unsigned int FileHeaderOffsetOfRGB24V5 = 0x8A;
36 BMP_RGB1 = 14, //BI_RGB & bpp =1
37 BMP_RGB4, //BI_RGB & bpp = 4
38 BMP_RGB8, //BI_RGB & bpp = 8
39 BMP_RGB555, //BI_RGB & bpp = 16
40 BMP_BITFIELDS555, //BI_BITFIELDS & 16bit & R:G:B = 5:5:5
41 BMP_BITFIELDS32, //BI_BITFIELDS & 32bit & R:G:B:A = 8:8:8:8
44 BMP_BITFIELDS32V4, //BI_BITFIELDS & 32bit
45 BMP_RGB24V5, //BI_RGB & bpp = 24 & bmp version5
51 unsigned short signature; // Bitmap file signature
52 unsigned int fileSize; // Bitmap file size in bytes
53 unsigned short reserved1; // Reserved bits
54 unsigned short reserved2; // Reserved bits
55 unsigned int offset; // Offset from BMP file header to BMP bits
56 } __attribute__((__packed__)); // Stops the structure from being aligned to every 4 bytes
60 unsigned int infoHeaderSize; // Specifies the number of bytes required by the info header
61 unsigned int width; // The Image Width
62 int height; // The Image Height (negative value represents image data is flipped)
63 unsigned short planes; // The number of color planes, must be 1
64 unsigned short bitsPerPixel; // The bits per pixel
65 unsigned int compression; // The type of compression used by the image
66 unsigned int imageSize; // The size of the image in bytes
67 unsigned int xPixelsPerMeter; // The number of pixels per meter in x axis
68 unsigned int yPixelsPerMeter; // The number of pixels per meter in y axis
69 unsigned int numberOfColors; // The number of colors in the color table
70 unsigned int importantColors; // The important color count
71 } __attribute__((__packed__)); // Stops the structure from being aligned to every 4 bytes
74 * Template function to read from the file directly into our structure.
75 * @param[in] fp The file to read from
76 * @param[out] header The structure we want to store our information in
77 * @return true, if read successful, false otherwise
80 inline bool ReadHeader(FILE* fp, T& header)
82 const unsigned int readLength = sizeof(T);
84 // Load the information directly into our structure
85 if(fread(&header, 1, readLength, fp) != readLength)
93 bool LoadBmpHeader(FILE* fp, unsigned int& width, unsigned int& height, BmpFileHeader& fileHeader, BmpInfoHeader& infoHeader)
95 if(!ReadHeader(fp, fileHeader))
97 DALI_LOG_ERROR("File header read failed\n");
101 if(!ReadHeader(fp, infoHeader))
103 DALI_LOG_ERROR("Info header read failed\n");
107 width = infoHeader.width;
108 height = abs(infoHeader.height);
110 if(infoHeader.width == 0)
112 DALI_LOG_ERROR("Invalid header size\n");
120 * function to decode format BI_RGB & bpp = 24 & bmp version5.
121 * @param[in] fp The file to read from
122 * @param[out] pixels The pointer that we want to store bmp data in
123 * @param[in] width bmp width
124 * @param[in] height bmp height
125 * @param[in] offset offset from bmp header to bmp image data
126 * @param[in] topDown indicate image data is read from bottom or from top
127 * @param[in] padding padded to a u_int32 boundary for each line
128 * @return true, if decode successful, false otherwise
130 bool DecodeRGB24V5(FILE* fp,
131 unsigned char* pixels,
136 unsigned int rowStride,
137 unsigned int padding)
139 if(fp == NULL || pixels == NULL)
141 DALI_LOG_ERROR("Error decoding BMP_RGB24V5 format\n");
144 if(fseek(fp, offset, SEEK_SET))
146 DALI_LOG_ERROR("Error seeking BMP_RGB24V5 data\n");
150 for(unsigned int yPos = 0; yPos < height; yPos++)
152 unsigned char* pixelsPtr = NULL;
155 pixelsPtr = pixels + (yPos * rowStride);
159 pixelsPtr = pixels + (((height - 1) - yPos) * rowStride);
161 if(fread(pixelsPtr, 1, rowStride, fp) != rowStride)
163 DALI_LOG_ERROR("Error reading the BMP image\n");
166 for(unsigned int i = 0; i < rowStride; i += 3)
168 unsigned char temp = pixelsPtr[i];
169 pixelsPtr[i] = pixelsPtr[i + 2];
170 pixelsPtr[i + 2] = temp;
175 // move past the padding.
176 if(fseek(fp, padding, SEEK_CUR))
178 DALI_LOG_ERROR("Error moving past BMP_RGB24V5 padding\n");
186 * function to decode format BI_BITFIELDS & bpp = 32 & bmp version4.
187 * @param[in] fp The file to read from
188 * @param[out] pixels The pointer that we want to store bmp data in
189 * @param[in] width bmp width
190 * @param[in] height bmp height
191 * @param[in] offset offset from bmp header to bmp image data
192 * @param[in] topDown indicate image data is read from bottom or from top
193 * @param[in] rowStride bits span for each line
194 * @param[in] padding padded to a u_int32 boundary for each line
195 * @return true, if decode successful, false otherwise
197 bool DecodeBF32V4(FILE* fp,
198 unsigned char* pixels,
203 unsigned int rowStride,
204 unsigned int padding)
206 if(fp == NULL || pixels == NULL)
208 DALI_LOG_ERROR("Error decoding BMP_BITFIELDS32V4 format\n");
211 if(fseek(fp, offset, SEEK_SET))
213 DALI_LOG_ERROR("Error seeking BMP_BITFIELDS32V4 data\n");
217 for(unsigned int yPos = 0; yPos < height; yPos++)
219 unsigned char* pixelsPtr = NULL;
222 pixelsPtr = pixels + (yPos * rowStride);
226 pixelsPtr = pixels + (((height - 1) - yPos) * rowStride);
228 if(fread(pixelsPtr, 1, rowStride, fp) != rowStride)
230 DALI_LOG_ERROR("Error reading the BMP image\n");
233 for(unsigned int i = 0; i < rowStride; i += 4)
235 unsigned char temp = pixelsPtr[i];
236 pixelsPtr[i] = pixelsPtr[i + 2];
237 pixelsPtr[i + 2] = temp;
241 // move past the padding.
242 if(fseek(fp, padding, SEEK_CUR))
244 DALI_LOG_ERROR("Error moving past BMP_BITFIELDS32V4 padding\n");
252 * function to decode format BI_BITFIELDS & bpp = 32
253 * @param[in] fp The file to read from
254 * @param[out] pixels The pointer that we want to store bmp data in
255 * @param[in] width bmp width
256 * @param[in] height bmp height
257 * @param[in] offset offset from bmp header to bmp image data
258 * @param[in] topDown indicate image data is read from bottom or from top
259 * @param[in] rowStride bits span for each line
260 * @param[in] padding padded to a u_int32 boundary for each line
261 * @return true, if decode successful, false otherwise
263 bool DecodeBF32(FILE* fp,
264 unsigned char* pixels,
269 unsigned int rowStride,
270 unsigned int padding)
272 if(fp == NULL || pixels == NULL)
274 DALI_LOG_ERROR("Error decoding BMP_BITFIELDS32 format\n");
277 if(fseek(fp, offset, SEEK_SET))
279 DALI_LOG_ERROR("Error seeking BMP_BITFIELDS32 data\n");
283 for(unsigned int yPos = 0; yPos < height; yPos++)
285 unsigned char* pixelsPtr;
288 // the data in the file is top down, and we store the data top down
289 pixelsPtr = pixels + (yPos * rowStride);
293 // the data in the file is bottom up, and we store the data top down
294 pixelsPtr = pixels + (((height - 1) - yPos) * rowStride);
297 if(fread(pixelsPtr, 1, rowStride, fp) != rowStride)
299 DALI_LOG_ERROR("Error reading the BMP image\n");
302 for(unsigned int i = 0; i < rowStride; i += 4)
304 unsigned char temp = pixelsPtr[i];
305 pixelsPtr[i] = pixelsPtr[i + 2];
306 pixelsPtr[i + 2] = temp;
311 // move past the padding.
312 if(fseek(fp, padding, SEEK_CUR))
314 DALI_LOG_ERROR("Error moving past BMP_BITFIELDS32 padding\n");
322 * function to decode format BI_BITFIELDS & bpp = 16 & R:G:B = 5:6:5
323 * @param[in] fp The file to read from
324 * @param[out] pixels The pointer that we want to store bmp data in
325 * @param[in] width bmp width
326 * @param[in] height bmp height
327 * @param[in] offset offset from bmp header to bmp image data
328 * @param[in] topDown indicate image data is read from bottom or from top
329 * @return true, if decode successful, false otherwise
331 bool DecodeBF565(FILE* fp,
332 unsigned char* pixels,
338 if(fp == NULL || pixels == NULL)
340 DALI_LOG_ERROR("Error decoding RGB565 format\n");
343 if(fseek(fp, offset, SEEK_SET))
345 DALI_LOG_ERROR("Error seeking RGB565 data\n");
349 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
350 unsigned int rowStride = width * 2;
352 for(unsigned int i = 0; i < height; i++)
354 unsigned char* pixelsPtr = NULL;
357 // the data in the file is top down, and we store the data top down
358 pixelsPtr = pixels + (i * rowStride);
362 // the data in the file is bottom up, and we store the data top down
363 pixelsPtr = pixels + (((height - 1) - i) * rowStride);
365 if(fread(pixelsPtr, 1, rowStride, fp) != rowStride)
375 * function to decode format BI_BITFIELDS & bpp = 16 & R:G:B = 5:5:5
376 * @param[in] fp The file to read from
377 * @param[out] pixels The pointer that we want to store bmp data in
378 * @param[in] width bmp width
379 * @param[in] height bmp height
380 * @param[in] offset offset from bmp header to bmp image data
381 * @param[in] topDown indicate image data is read from bottom or from top
382 * @return true, if decode successful, false otherwise
384 bool DecodeBF555(FILE* fp,
385 unsigned char* pixels,
391 if(fp == NULL || pixels == NULL)
393 DALI_LOG_ERROR("Error decoding BMP_BITFIELDS555 format\n");
397 if(fseek(fp, offset, SEEK_SET))
399 DALI_LOG_ERROR("Error seeking BMP_BITFIELDS555 data\n");
403 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
405 std::vector<char> raw(width * height * 2);
406 unsigned int rawStride = width * 2;
407 unsigned int rowStride = width * 3;
410 for(unsigned int j = 0; j < height; j++)
412 rawPtr = &raw[0] + (j * rawStride);
413 if(fread(rawPtr, 1, rawStride, fp) != rawStride)
419 for(unsigned int yPos = 0; yPos < height; yPos++)
421 unsigned char* pixelsPtr = NULL;
424 // the data in the file is top down, and we store the data top down
425 pixelsPtr = pixels + (yPos * rowStride);
429 // the data in the file is bottom up, and we store the data top down
430 pixelsPtr = pixels + (((height - 1) - yPos) * rowStride);
433 for(unsigned int k = 0; k < width; k++)
435 int index = yPos * rawStride + 2 * k;
436 pixelsPtr[3 * k] = ((raw[index + 1] >> 2) & 0x1F) * 0xFF / 0x1F;
437 pixelsPtr[3 * k + 1] = (((raw[index + 1] & 0x03) << 3) | (raw[index] >> 5)) * 0xFF / 0x1F;
438 pixelsPtr[3 * k + 2] = (raw[index] & 0x1F) * 0xFF / 0x1F;
445 * function to decode format BI_RGB & bpp = 16 & R:G:B = 5:5:5
446 * @param[in] fp The file to read from
447 * @param[out] pixels The pointer that we want to store bmp data in
448 * @param[in] width bmp width
449 * @param[in] height bmp height
450 * @param[in] offset offset from bmp header to bmp image data
451 * @param[in] topDown indicate image data is read from bottom or from top
452 * @return true, if decode successful, false otherwise
454 bool DecodeRGB555(FILE* fp,
455 unsigned char* pixels,
461 if(fp == NULL || pixels == NULL)
463 DALI_LOG_ERROR("Error decoding BMP_RGB555 format\n");
466 if(fseek(fp, offset, SEEK_SET))
468 DALI_LOG_ERROR("Error seeking BMP_RGB555 data\n");
472 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
473 std::vector<char> raw(width * height * 2);
474 unsigned int rawStride = width * 2;
475 unsigned int rowStride = width * 3;
478 for(unsigned int j = 0; j < height; j++)
480 rawPtr = &raw[0] + (j * rawStride);
481 if(fread(rawPtr, 1, rawStride, fp) != rawStride)
486 for(unsigned int i = 0; i < height; i++)
488 unsigned char* pixelsPtr = NULL;
491 // the data in the file is top down, and we store the data top down
492 pixelsPtr = pixels + (i * rowStride);
496 // the data in the file is bottom up, and we store the data top down
497 pixelsPtr = pixels + (((height - 1) - i) * rowStride);
499 for(unsigned int k = 0; k < width; k++)
501 int index = i * rawStride + 2 * k;
502 pixelsPtr[3 * k] = ((raw[index + 1] >> 2) & 0x1F) * 0xFF / 0x1F;
503 pixelsPtr[3 * k + 1] = (((raw[index + 1] & 0x03) << 3) | (raw[index] >> 5)) * 0xFF / 0x1F;
504 pixelsPtr[3 * k + 2] = (raw[index] & 0x1F) * 0xFF / 0x1F;
511 * function to decode format BI_RGB & bpp = 1
512 * @param[in] fp The file to read from
513 * @param[out] pixels The pointer that we want to store bmp data in
514 * @param[in] width bmp width
515 * @param[in] height bmp height
516 * @param[in] offset offset from bmp header to bmp palette data
517 * @param[in] topDown indicate image data is read from bottom or from top
518 * @return true, if decode successful, false otherwise
520 bool DecodeRGB1(FILE* fp,
521 unsigned char* pixels,
527 if(fp == NULL || pixels == NULL)
529 DALI_LOG_ERROR("Error decoding BMP_RGB1 format\n");
532 if(fseek(fp, offset, SEEK_SET))
534 DALI_LOG_ERROR("Error seeking BMP_RGB1 data\n");
538 unsigned char colorTable[8] = {0};
540 unsigned int fillw = ((width & 63) != 0) ? width + 64 - (width & 63) : width;
541 std::vector<char> colorIndex(fillw * height);
542 unsigned int rowStride = fillw * 3; // RGB
544 if(fread(colorTable, 1, 8, fp) != 8)
549 for(unsigned int i = 0; i < fillw * height; i += 8)
551 if(fread(&cmd, 1, 1, fp) != 1)
556 colorIndex[i] = (cmd >> 7) & 0x01;
557 colorIndex[i + 1] = (cmd >> 6) & 0x01;
558 colorIndex[i + 2] = (cmd >> 5) & 0x01;
559 colorIndex[i + 3] = (cmd >> 4) & 0x01;
560 colorIndex[i + 4] = (cmd >> 3) & 0x01;
561 colorIndex[i + 5] = (cmd >> 2) & 0x01;
562 colorIndex[i + 6] = (cmd >> 1) & 0x01;
563 colorIndex[i + 7] = (cmd & 0x01);
566 for(unsigned int index = 0; index < height; index = index + 1)
568 unsigned char* pixelsPtr = NULL;
571 // the data in the file is top down, and we store the data top down
572 pixelsPtr = pixels + (index * rowStride);
576 // the data in the file is bottom up, and we store the data top down
577 pixelsPtr = pixels + (((height - 1) - index) * rowStride);
579 for(unsigned int j = 0; j < fillw; j++)
581 unsigned int ctIndex = 0;
582 if((fillw * index + j) < (fillw * height))
584 ctIndex = colorIndex[fillw * index + j];
590 // temp solution for PLM bug P130411-5268, there is one mono bmp that cause DecodeRGB1 API crash.
591 if(((3 * j + 2) < height * fillw * 3) && (ctIndex < 2))
593 pixelsPtr[3 * j] = colorTable[4 * ctIndex + 2];
594 pixelsPtr[3 * j + 1] = colorTable[4 * ctIndex + 1];
595 pixelsPtr[3 * j + 2] = colorTable[4 * ctIndex];
603 * function to decode format BI_RGB & bpp = 4
604 * @param[in] fp The file to read from
605 * @param[out] pixels The pointer that we want to store bmp data in
606 * @param[in] width bmp width
607 * @param[in] height bmp height
608 * @param[in] offset offset from bmp header to bmp palette data
609 * @param[in] topDown indicate image data is read from bottom or from top
610 * @return true, if decode successful, false otherwise
612 bool DecodeRGB4(FILE* fp,
613 unsigned char* pixels,
619 if(fp == NULL || pixels == NULL)
621 DALI_LOG_ERROR("Error decoding BMP_RGB4 format\n");
624 if(fseek(fp, offset, SEEK_SET))
626 DALI_LOG_ERROR("Error seeking BMP_RGB4 data\n");
632 unsigned int fillw = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
633 std::vector<char> colorIndex(fillw * height);
634 unsigned int rowStride = fillw * 3;
636 if(fread(colorTable, 1, 64, fp) != 64)
641 for(unsigned int i = 0; i < fillw * height; i += 2)
643 if(fread(&cmd, 1, 1, fp) != 1)
648 colorIndex[i] = cmd >> 4;
649 colorIndex[i + 1] = cmd & (0x0F);
651 unsigned int ctIndex = 0;
653 for(unsigned int index = 0; index < height; index = index + 1)
655 unsigned char* pixelsPtr = NULL;
658 // the data in the file is top down, and we store the data top down
659 pixelsPtr = pixels + (index * rowStride);
663 // the data in the file is bottom up, and we store the data top down
664 pixelsPtr = pixels + (((height - 1) - index) * rowStride);
666 for(unsigned int j = 0; j < fillw; j++)
668 ctIndex = colorIndex[fillw * index + j];
669 pixelsPtr[3 * j] = colorTable[4 * ctIndex + 2];
670 pixelsPtr[(3 * j + 1)] = colorTable[4 * ctIndex + 1];
671 pixelsPtr[(3 * j + 2)] = colorTable[4 * ctIndex];
679 * function to decode format BI_RGB & bpp = 8
680 * @param[in] fp The file to read from
681 * @param[out] pixels The pointer that we want to store bmp data in
682 * @param[in] width bmp width
683 * @param[in] height bmp height
684 * @param[in] offset offset from bmp header to bmp palette data
685 * @param[in] topDown indicate image data is read from bottom or from top
686 * @return true, if decode successful, false otherwise
688 bool DecodeRGB8(FILE* fp,
689 unsigned char* pixels,
695 if(fp == NULL || pixels == NULL)
697 DALI_LOG_ERROR("Error decoding BMP_RGB8 format\n");
700 if(fseek(fp, offset, SEEK_SET))
702 DALI_LOG_ERROR("Error seeking BMP_RGB8 data\n");
706 std::vector<char> colorTable(1024);
707 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
709 std::vector<char> colorIndex(width * height);
710 unsigned int rowStride = width * 3; //RGB8->RGB24
712 if(fread(&colorTable[0], 1, 1024, fp) != 1024)
716 for(unsigned int i = 0; i < width * height; i++)
718 if(fread(&cmd, 1, 1, fp) != 1)
725 unsigned int ctIndex = 0;
726 for(unsigned int index = 0; index < height; index = index + 1)
728 unsigned char* pixelsPtr = NULL;
731 // the data in the file is top down, and we store the data top down
732 pixelsPtr = pixels + (index * rowStride);
736 // the data in the file is bottom up, and we store the data top down
737 pixelsPtr = pixels + (((height - 1) - index) * rowStride);
739 for(unsigned int j = 0; j < width; j++)
741 ctIndex = colorIndex[width * index + j];
742 pixelsPtr[3 * j] = colorTable[4 * ctIndex + 2];
743 pixelsPtr[(3 * j + 1)] = colorTable[4 * ctIndex + 1];
744 pixelsPtr[(3 * j + 2)] = colorTable[4 * ctIndex];
751 * function to decode format BI_RLE4 & bpp = 4
752 * @param[in] fp The file to read from
753 * @param[out] pixels The pointer that we want to store bmp data in
754 * @param[in] width bmp width
755 * @param[in] height bmp height
756 * @param[in] offset offset from bmp header to bmp palette data
757 * @param[in] topDown indicate image data is read from bottom or from top
758 * @return true, if decode successful, false otherwise
760 bool DecodeRLE4(FILE* fp,
761 unsigned char* pixels,
767 if(fp == NULL || pixels == NULL)
769 DALI_LOG_ERROR("Error decoding BMP_RLE4 format\n");
772 unsigned char* pixelsPtr = pixels;
773 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
775 unsigned int cmdStride = 2;
777 std::vector<char> colorIndex(width * height >> 1);
778 std::vector<char> run;
783 width += (width & 1);
788 if(fseek(fp, offset, SEEK_SET))
790 DALI_LOG_ERROR("Error seeking BMP_RLE4 data\n");
794 if(fread(colorTable, 1, 64, fp) != 64)
799 while((x >> 1) + y * width < width * height)
805 if(fread(cmd, 1, cmdStride, fp) != cmdStride)
809 if(cmd[0] == 0) // ESCAPE
813 case 1: //end of bitmap
816 case 0: // end of line
821 if(fread(cmd, 1, cmdStride, fp) != cmdStride)
823 DALI_LOG_ERROR("Error reading the BMP image\n");
826 dx = cmd[0] & (0xFF);
827 dy = cmd[1] & (0xFF);
832 // decode a literal run
833 unsigned int length = cmd[1] & (0xFF);
834 //size of run, which is word aligned
835 unsigned int bytesize = length;
836 bytesize += (bytesize & 1);
838 bytesize += (bytesize & 1);
839 run.resize(bytesize);
840 if(fread(&run[0], 1, bytesize, fp) != bytesize)
842 DALI_LOG_ERROR("Error reading the BMP image\n");
847 length += (length & 1);
849 for(unsigned int i = 0; i < length; i += 1)
851 colorIndex[(x >> 1) + width * (height - y - 1) + i] = run[i];
856 for(unsigned int i = 0; i < length; i++)
858 if((i & 1) == 0) //copy high to low
860 colorIndex[((x + i) >> 1) + width * (height - y - 1)] |= ((run[i >> 1] & 0xF0) >> 4);
862 else //copy low to high
864 colorIndex[((x + i) >> 1) + width * (height - y - 1)] |= ((run[i >> 1] & 0x0F) << 4);
868 x += cmd[1] & (0xFF);
874 unsigned int length = cmd[0] & (0xFF);
877 length += (length & 1);
879 for(unsigned int i = 0; i < length; i++)
881 colorIndex[(height - y - 1) * width + i + (x >> 1)] = cmd[1];
886 for(unsigned int i = 0; i < length; i++)
890 colorIndex[((x + i) >> 1) + width * (height - y - 1)] |= ((cmd[1] & 0xF0) >> 4);
894 colorIndex[((x + i) >> 1) + width * (height - y - 1)] |= ((cmd[1] & 0x0F) << 4);
898 x += cmd[0] & (0xFF);
904 for(unsigned int index = 0; index < (width * height); index = index + 1)
906 ctIndexHigh = colorIndex[index] >> 4;
907 ctIndexLow = colorIndex[index] & (0x0F);
908 pixelsPtr[6 * index] = colorTable[4 * ctIndexHigh + 2];
909 pixelsPtr[6 * index + 1] = colorTable[4 * ctIndexHigh + 1];
910 pixelsPtr[6 * index + 2] = colorTable[4 * ctIndexHigh];
911 pixelsPtr[6 * index + 3] = colorTable[4 * ctIndexLow + 2];
912 pixelsPtr[6 * index + 4] = colorTable[4 * ctIndexLow + 1];
913 pixelsPtr[6 * index + 5] = colorTable[4 * ctIndexLow];
919 * function to decode format BI_RLE8 & bpp = 8
920 * @param[in] fp The file to read from
921 * @param[out] pixels The pointer that we want to store bmp data in
922 * @param[in] width bmp width
923 * @param[in] height bmp height
924 * @param[in] offset offset from bmp header to bmp palette data
925 * @param[in] topDown indicate image data is read from bottom or from top
926 * @return true, if decode successful, false otherwise
928 bool DecodeRLE8(FILE* fp,
929 unsigned char* pixels,
935 if(fp == NULL || pixels == NULL)
937 DALI_LOG_ERROR("Error decoding BMP_RLE8 format\n");
940 unsigned char* pixelsPtr = pixels;
943 unsigned int cmdStride = 2;
945 width = ((width & 3) != 0) ? width + 4 - (width & 3) : width;
946 std::vector<char> colorTable(1024);
948 std::vector<char> colorIndex(width * height);
950 if(fseek(fp, offset, SEEK_SET))
952 DALI_LOG_ERROR("Error seeking BMP_RLE8 data\n");
956 if(fread(&colorTable[0], 1, 1024, fp) != 1024)
964 unsigned int length = 0;
965 unsigned int copylength = 0;
966 std::vector<char> run;
967 while((x + y * width) < width * height)
973 if(fread(cmd, 1, cmdStride, fp) != cmdStride)
978 if(cmd[0] == 0) //ESCAPE
982 case 1: // end of bitmap
985 case 0: // end of line
990 if(fread(cmd, 1, cmdStride, fp) != cmdStride)
992 DALI_LOG_ERROR("Error reading the BMP image\n");
995 dx = cmd[0] & (0xFF);
996 dy = cmd[1] & (0xFF);
1001 //decode a literal run
1002 length = cmd[1] & (0xFF);
1003 copylength = length;
1004 //absolute mode must be word-aligned
1005 length += (length & 1);
1007 if(fread(&run[0], 1, length, fp) != length)
1009 DALI_LOG_ERROR("Error reading the BMP image\n");
1013 for(unsigned int i = 0; i < length; i += 1)
1015 colorIndex[x + width * (height - y - 1) + i] = run[i];
1020 } // end if cmd[0] ==
1023 length = cmd[0] & (0xFF);
1024 for(unsigned int i = 0; i < length; i++)
1026 colorIndex[(height - y - 1) * width + x] = cmd[1];
1032 for(unsigned int index = 0; index < width * height; index = index + 1)
1034 ctIndex = colorIndex[index];
1035 pixelsPtr[3 * index] = colorTable[4 * ctIndex + 2];
1036 pixelsPtr[3 * index + 1] = colorTable[4 * ctIndex + 1];
1037 pixelsPtr[3 * index + 2] = colorTable[4 * ctIndex];
1042 } // unnamed namespace
1044 bool LoadBmpHeader(const Dali::ImageLoader::Input& input, unsigned int& width, unsigned int& height)
1046 BmpFileHeader fileHeader;
1047 BmpInfoHeader infoHeader;
1049 bool ret = LoadBmpHeader(input.file, width, height, fileHeader, infoHeader);
1054 bool LoadBitmapFromBmp(const Dali::ImageLoader::Input& input, Dali::Devel::PixelBuffer& bitmap)
1056 //DALI_ASSERT_DEBUG( bitmap.GetPackedPixelsProfile() != 0 && "Need a packed pixel bitmap to load into." );
1057 FILE* const fp = input.file;
1060 DALI_LOG_ERROR("Error loading bitmap\n");
1063 BmpFormat customizedFormat = BMP_NOTEXIST;
1064 BmpFileHeader fileHeader;
1065 BmpInfoHeader infoHeader;
1067 // Load the header info
1068 unsigned int width, height;
1070 if(!LoadBmpHeader(fp, width, height, fileHeader, infoHeader))
1075 Pixel::Format pixelFormat = Pixel::RGB888;
1076 switch(infoHeader.compression)
1079 switch(infoHeader.bitsPerPixel)
1082 pixelFormat = Pixel::BGR8888;
1086 if(fileHeader.offset == FileHeaderOffsetOfRGB24V5) //0x8A
1088 customizedFormat = BMP_RGB24V5;
1092 pixelFormat = Pixel::RGB888;
1097 customizedFormat = BMP_RGB555;
1101 customizedFormat = BMP_RGB8;
1105 customizedFormat = BMP_RGB4;
1109 customizedFormat = BMP_RGB1;
1112 DALI_LOG_ERROR("%d bits per pixel not supported for BMP files\n", infoHeader.bitsPerPixel);
1118 if(infoHeader.bitsPerPixel == 8)
1120 customizedFormat = BMP_RLE8;
1126 if(infoHeader.bitsPerPixel == 4)
1128 customizedFormat = BMP_RLE4;
1132 case 3: // // BI_BITFIELDS
1134 if(infoHeader.bitsPerPixel == 16)
1136 if(fseek(fp, 14 + infoHeader.infoHeaderSize + 1, SEEK_SET))
1142 if(fread(&mask, 1, 1, fp) != 1)
1147 if((mask & 0x80) == MaskForBFRGB565) // mask is 0xF8
1149 pixelFormat = Pixel::RGB565;
1151 else if((mask & 0x80) == 0) // mask is 0x 7C
1153 customizedFormat = BMP_BITFIELDS555;
1160 else if(infoHeader.bitsPerPixel == 32)
1162 if(fileHeader.offset == FileHeaderOffsetOfBF32V4) // 0x7A
1164 customizedFormat = BMP_BITFIELDS32V4;
1168 customizedFormat = BMP_BITFIELDS32;
1174 DALI_LOG_ERROR("Compression not supported for BMP files\n");
1178 bool topDown = false;
1180 // if height is negative, bitmap data is top down
1181 if(infoHeader.height < 0)
1183 infoHeader.height = abs(infoHeader.height);
1184 height = infoHeader.height;
1188 unsigned int rowStride = infoHeader.width * (infoHeader.bitsPerPixel >> 3);
1190 // bitmaps row stride is padded to 4 bytes
1191 unsigned int padding = (rowStride % 4);
1194 padding = 4 - padding;
1197 int imageW = infoHeader.width;
1198 int pixelBufferW = infoHeader.width;
1199 int pixelBufferH = infoHeader.height;
1200 auto newPixelFormat = Pixel::Format::INVALID;
1202 switch(customizedFormat)
1209 case BMP_BITFIELDS555:
1211 pixelBufferW = ((imageW & 3) != 0) ? imageW + 4 - (imageW & 3) : imageW;
1212 pixelBufferH = abs(infoHeader.height);
1213 newPixelFormat = Pixel::RGB888;
1218 pixelBufferW = ((imageW & 63) != 0) ? imageW + 64 - (imageW & 63) : imageW;
1219 pixelBufferH = abs(infoHeader.height);
1220 newPixelFormat = Pixel::RGB888;
1223 case BMP_BITFIELDS32:
1224 case BMP_BITFIELDS32V4:
1226 pixelBufferH = abs(infoHeader.height);
1227 newPixelFormat = Pixel::RGB8888;
1232 newPixelFormat = Pixel::RGB888;
1236 if(pixelFormat == Pixel::RGB565)
1238 pixelBufferW = ((imageW & 3) != 0) ? imageW + 4 - (imageW & 3) : imageW;
1239 pixelBufferH = abs(infoHeader.height);
1240 newPixelFormat = Pixel::RGB565;
1244 pixelBufferW = infoHeader.width;
1245 pixelBufferH = infoHeader.height;
1246 newPixelFormat = pixelFormat;
1251 bitmap = Dali::Devel::PixelBuffer::New(pixelBufferW, pixelBufferH, newPixelFormat);
1252 auto pixels = bitmap.GetBuffer();
1254 // Read the raw bitmap data
1255 decltype(pixels) pixelsIterator = nullptr;
1257 bool decodeResult(false);
1258 switch(customizedFormat)
1262 decodeResult = DecodeRGB1(fp, pixels, infoHeader.width, abs(infoHeader.height), 14 + infoHeader.infoHeaderSize, topDown);
1267 decodeResult = DecodeRGB4(fp, pixels, infoHeader.width, abs(infoHeader.height), 14 + infoHeader.infoHeaderSize, topDown);
1272 decodeResult = DecodeRLE4(fp, pixels, infoHeader.width, abs(infoHeader.height), 14 + infoHeader.infoHeaderSize, topDown);
1275 case BMP_BITFIELDS32:
1277 decodeResult = DecodeBF32(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown, rowStride, padding);
1280 case BMP_BITFIELDS555:
1282 decodeResult = DecodeBF555(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown);
1287 decodeResult = DecodeRGB555(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown);
1292 decodeResult = DecodeRGB8(fp, pixels, infoHeader.width, abs(infoHeader.height), 14 + infoHeader.infoHeaderSize, topDown);
1297 decodeResult = DecodeRLE8(fp, pixels, infoHeader.width, abs(infoHeader.height), 14 + infoHeader.infoHeaderSize, topDown);
1302 decodeResult = DecodeRGB24V5(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown, rowStride, padding);
1305 case BMP_BITFIELDS32V4:
1307 decodeResult = DecodeBF32V4(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown, rowStride, padding);
1312 if(pixelFormat == Pixel::RGB565)
1314 decodeResult = DecodeBF565(fp, pixels, infoHeader.width, abs(infoHeader.height), fileHeader.offset, topDown);
1318 for(unsigned int yPos = 0; yPos < height; yPos++)
1322 // the data in the file is top down, and we store the data top down
1323 pixelsIterator = pixels + (yPos * rowStride);
1327 // the data in the file is bottom up, and we store the data top down
1328 pixelsIterator = pixels + (((height - 1) - yPos) * rowStride);
1331 if(fread(pixelsIterator, 1, rowStride, fp) != rowStride)
1333 DALI_LOG_ERROR("Error reading the BMP image\n");
1337 // If 24 bit mode then swap Blue and Red pixels
1338 // BGR888 doesn't seem to be supported by dali-core
1339 if(infoHeader.bitsPerPixel == 24)
1341 for(unsigned int i = 0; i < rowStride; i += 3)
1343 unsigned char temp = pixelsIterator[i];
1344 pixelsIterator[i] = pixelsIterator[i + 2];
1345 pixelsIterator[i + 2] = temp;
1351 if(fseek(fp, padding, SEEK_CUR)) // move past the padding.
1353 DALI_LOG_ERROR("Error moving past BMP padding\n");
1357 decodeResult = true;
1365 DALI_LOG_ERROR("Decoding failed\n");
1372 } // namespace TizenPlatform