ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

-Parsed the gameName from the extra ROM info. 

--I think the proper way to obtain this is through the metadata, which I still don't know how to handle.
-Fixed the savestate offset.
-Parsed out the CRC32 of the ROM, though I haven't done anything to validate this, which is probably a good idea.
This commit is contained in:
brandman211 2012-09-14 01:53:04 +00:00
parent 39b891c824
commit c949276815
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
BizHawk.MultiClient/movie/MovieImport.cs
View File

@ -1622,16 +1622,27 @@ namespace BizHawk.MultiClient
if "1", there is extra ROM info located right in between of the metadata and the savestate.
bit 7: set to 0.
*/
uint savestateOffset = r.ReadByte();
flags = r.ReadByte();
/*
Extra ROM info is always positioned right before the savestate. Its size is 30 bytes if MOVIE_SYNC_HASROMINFO
is used (and MOVIE_SYNC_DATA_EXISTS is set), 0 bytes otherwise.
*/
int extraRomInfo = (((flags >> 6) & 0x1) != 0 && (flags & 0x1) != 0) ? 30 : 0;
// 018 4-byte little-endian unsigned int: offset to the savestate inside file
r.ReadUInt32();
uint savestateOffset = r.ReadUInt32();
// 01C 4-byte little-endian unsigned int: offset to the controller data inside file
uint firstFrameOffset = r.ReadUInt32();
/*
After the header comes "metadata", which is UTF16-coded movie title string (author info). The metadata begins
from position 32 (0x20) and ends at <savestate_offset - length_of_extra_rom_info_in_bytes>.
*/
string metadata = Encoding.Unicode.GetString(r.ReadBytes((int)(savestateOffset - 0x20)));
string metadata = Encoding.Unicode.GetString(r.ReadBytes((int)(savestateOffset - extraRomInfo - 0x20))); // TODO: Handle.
// 000 3 bytes of zero padding: 00 00 00 003 4-byte integer: CRC32 of the ROM 007 23-byte ascii string
r.ReadBytes(3);
int crc32 = r.ReadInt32(); // TODO: Validate.
// the game name copied from the ROM, truncated to 23 bytes (the game name in the ROM is 21 bytes)
string gameName = RemoveNull(Encoding.UTF8.GetString(r.ReadBytes(23)));
m.Header.SetHeaderLine(MovieHeader.GAMENAME, gameName);
r.BaseStream.Position = firstFrameOffset;
for (int frame = 1; frame <= frameCount; frame++)
{