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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2 | daniel-mar | 1 | /** |
| 2 | * Bitmap Import for Imagination Pilots Entertainment 32-bit games (IPE32) |
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| 3 | * - Where's Waldo? Exploring Geography |
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| 4 | * - Eraser Turnabout by Imagination Pilots |
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| 5 | * - Virtual K'Nex by Imagination Pilots |
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| 6 | * ART file packer and unpacker by Daniel Marschall, ViaThinkSoft (C) 2014-2018 |
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| 7 | * Revision: 2018-02-15 |
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| 8 | **/ |
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| 9 | |||
| 10 | #include <stdio.h> |
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| 11 | #include <stdint.h> |
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| 12 | #include <stdlib.h> |
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| 13 | #include <string.h> |
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| 14 | #include <math.h> |
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| 15 | |||
| 16 | #include "bitmap.h" |
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| 17 | #include "utils.h" |
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| 18 | #include "ipe32_bmpimport.h" |
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| 19 | |||
| 20 | #define BI_BITFIELDS 3 |
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| 21 | |||
| 22 | bool bmp_has_gap1(BITMAPFILEHEADER bitmapFileHeader, BITMAPINFOHEADER bitmapInfoHeader) { |
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| 23 | int expected = 0; |
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| 24 | expected = sizeof(bitmapFileHeader) + bitmapInfoHeader.biSize; |
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| 25 | |||
| 26 | if (bitmapInfoHeader.biCompression == BI_BITFIELDS) { |
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| 27 | expected += 3*sizeof(DWORD); |
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| 28 | } |
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| 29 | |||
| 30 | int numColorEntries; |
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| 31 | if (bitmapInfoHeader.biClrUsed == 0) { |
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| 32 | if ((bitmapInfoHeader.biBitCount == 1) || (bitmapInfoHeader.biBitCount == 4) || (bitmapInfoHeader.biBitCount == 8)) { |
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| 33 | numColorEntries = pow(2, bitmapInfoHeader.biBitCount); |
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| 34 | } else { |
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| 35 | numColorEntries = 0; |
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| 36 | } |
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| 37 | } else { |
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| 38 | numColorEntries = bitmapInfoHeader.biClrUsed; |
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| 39 | } |
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| 40 | expected += sizeof(RGBQUAD)*numColorEntries; |
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| 41 | |||
| 42 | return bitmapFileHeader.bfOffBits != expected; |
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| 43 | } |
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| 44 | |||
| 45 | bool ipe32_bmp_import(FILE* fibBitmap, Ipe32BmpImportData* result) { |
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| 46 | BITMAPFILEHEADER bitmapFileHeader; |
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| 47 | BITMAPINFOHEADER bitmapInfoHeader; |
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| 48 | |||
| 49 | #define EXIT_ERROR(msg) { sprintf(result->error, msg); return false; } |
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| 50 | |||
| 51 | fseek(fibBitmap, 0, SEEK_SET); |
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| 52 | |||
| 53 | if (!fread(&bitmapFileHeader, sizeof(BITMAPFILEHEADER), 1, fibBitmap) || |
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| 54 | (bitmapFileHeader.bfType != BI_SIGNATURE) || |
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| 55 | !fread(&bitmapInfoHeader, sizeof(BITMAPINFOHEADER), 1, fibBitmap)) { |
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| 56 | EXIT_ERROR("Not a bitmap file"); |
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| 57 | } |
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| 58 | |||
| 59 | if (bmp_has_gap1(bitmapFileHeader, bitmapInfoHeader)) { |
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| 60 | EXIT_ERROR("Picture may not have a gap between header and bitmap data"); |
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| 61 | } |
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| 62 | |||
| 63 | // TODO: Find out if the game has limitations in regards to compression, top-down/bottom-up, Bitmap version etc. |
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| 64 | /* |
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| 65 | if (bitmapInfoHeader.biCompression != BI_RGB) { |
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| 66 | EXIT_ERROR("At the moment, only uncompressed files can be read."); |
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| 67 | } |
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| 68 | |||
| 69 | if (bitmapInfoHeader.biBitCount != 8) { |
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| 70 | EXIT_ERROR("The color depth has to be 8 bpp."); |
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| 71 | } |
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| 72 | */ |
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| 73 | |||
| 74 | fseek(fibBitmap, sizeof(bitmapFileHeader), SEEK_SET); |
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| 75 | |||
| 76 | result->error[0] = 0; |
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| 77 | result->dataSize = file_size(fibBitmap)-sizeof(bitmapFileHeader); |
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| 78 | return true; |
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| 79 | } |
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| 80 | |||
| 81 | void ipe32_free_bmpimport_result(Ipe32BmpImportData *res) { |
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| 82 | } |
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| 83 |