| 98 | static_assert(sizeof(struct PckBlkSubHeader) == 5, "BlkSubHeader not 5 bytes"); |
| 99 | |
| 100 | static sp<PaletteImage> readPckCompression3(std::istream &input, Vec2<unsigned> size) |
| 101 | { |
| 102 | static size_t blkSize; |
| 103 | static up<char[]> blkData; |
| 104 | |
| 105 | if (!blkData) |
| 106 | { |
| 107 | auto blkFile = fw().data->fs.open("xcom3/tacdata/xcom.blk"); |
| 108 | if (!blkFile) |
| 109 | { |
| 110 | LogWarning("Failed to open xcom.blk"); |
| 111 | return nullptr; |
| 112 | } |
| 113 | blkSize = blkFile.size(); |
| 114 | blkData = blkFile.readAll(); |
| 115 | LogInfo("Loaded %zu bytes of xcom.blk", blkSize); |
| 116 | } |
| 117 | |
| 118 | auto img = mksp<PaletteImage>(size); |
| 119 | |
| 120 | PaletteImageLock l(img, ImageLockUse::Write); |
| 121 | |
| 122 | struct PckBlkHeader header; |
| 123 | |
| 124 | input.read(reinterpret_cast<char *>(&header), sizeof(header)); |
| 125 | |
| 126 | while (input && header.rowRecords != 0xff && header.unknown != 0xffff && header.row != 0xff) |
| 127 | { |
| 128 | unsigned col = 0; |
| 129 | unsigned row = header.row; |
| 130 | for (unsigned record = 0; record < header.rowRecords; record++) |
| 131 | { |
| 132 | struct PckBlkSubHeader subHeader; |
| 133 | input.read(reinterpret_cast<char *>(&subHeader), sizeof(subHeader)); |
| 134 | if (!input) |
| 135 | { |
| 136 | LogWarning("Unexpected EOF reading row header"); |
| 137 | return nullptr; |
| 138 | } |
| 139 | unsigned blkOffset = 0; |
| 140 | blkOffset = |
| 141 | subHeader.blkOffset[0] | subHeader.blkOffset[1] << 8 | subHeader.blkOffset[2] << 16; |
| 142 | col += subHeader.pixelSkip; |
| 143 | for (unsigned i = 0; i < subHeader.pixelCount; i++) |
| 144 | { |
| 145 | if (blkOffset >= blkSize) |
| 146 | { |
| 147 | LogWarning("BLKOffset %u too large for xcom.blk size", blkOffset); |
| 148 | } |
| 149 | else |
| 150 | { |
| 151 | if (row < size.y && col < size.x) |
| 152 | { |
| 153 | l.set({col, row}, blkData[blkOffset]); |
| 154 | } |
| 155 | else |
| 156 | { |
| 157 | LogWarning("{%d,%d} out of bounds", col, row); |