| 17 | } |
| 18 | |
| 19 | uint32_t LDBS::read(const Bytes& data) |
| 20 | { |
| 21 | ByteReader br(data); |
| 22 | |
| 23 | br.seek(0); |
| 24 | if ((br.read_be32() != LDBS_FILE_MAGIC) || |
| 25 | (br.read_be32() != LDBS_FILE_TYPE)) |
| 26 | error("not a valid LDBS file"); |
| 27 | |
| 28 | uint32_t address = br.read_le32(); |
| 29 | br.skip(4); |
| 30 | uint32_t trackDirectory = br.read_le32(); |
| 31 | |
| 32 | while (address) |
| 33 | { |
| 34 | br.seek(address); |
| 35 | if (br.read_be32() != LDBS_BLOCK_MAGIC) |
| 36 | error("invalid block at address 0x{:x}", address); |
| 37 | |
| 38 | Block& block = blocks[address]; |
| 39 | block.type = br.read_be32(); |
| 40 | |
| 41 | uint32_t size = br.read_le32(); |
| 42 | br.skip(4); |
| 43 | address = br.read_le32(); |
| 44 | |
| 45 | block.data.writer().append(br.read(size)); |
| 46 | } |
| 47 | |
| 48 | top = data.size(); |
| 49 | return trackDirectory; |
| 50 | } |
| 51 | |
| 52 | const Bytes LDBS::write(uint32_t trackDirectory) |
| 53 | { |