Cool_Tools/bemaniutils
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Support sprites which are basically recursive tag sections.

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This commit is contained in:
Jennifer Taylor 2021-04-03 05:26:03 +00:00
parent d688314d1f
commit 0e86248fd1
1 changed files with 44 additions and 22 deletions
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66
bemani/format/afp.py
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@ -311,7 +311,7 @@ class SWF:
return resources.get(tagid, "UNKNOWN")
def __parse_tag(self, ap2data: bytes, tagid: int, size: int, dataoffset: int, verbose: bool = False) -> None:
def __parse_tag(self, ap2_version: int, afp_version: int, ap2data: bytes, tagid: int, size: int, dataoffset: int, prefix: str = "", verbose: bool = False) -> None:
# Suppress debug text unless asked
if verbose:
def vprint(*args: Any, **kwargs: Any) -> None: # type: ignore
@ -333,18 +333,29 @@ class SWF:
add_coverage(dataoffset, size)
shape_reference = f"{self.exported_name}_shape{shape_id}"
vprint(f" Tag ID: {shape_id}, Reference: {shape_reference}")
vprint(f"{prefix} Tag ID: {shape_id}, Reference: {shape_reference}")
elif tagid == self.AP2_DEFINE_SPRITE:
wat, sprite_id = struct.unpack("<HH", ap2data[dataoffset:(dataoffset + 4)])
vprint(f" Tag ID: {sprite_id}")
sprite_flags, sprite_id = struct.unpack("<HH", ap2data[dataoffset:(dataoffset + 4)])
add_coverage(dataoffset, 4)
if sprite_flags & 1 == 0:
# This is an old-style tag, it has data directly following the header.
subtags_offset = dataoffset + 4
else:
# This is a new-style tag, it has a relative data pointer.
subtags_offset = struct.unpack("<I", ap2data[(dataoffset + 4):(dataoffset + 8)])[0] + dataoffset
add_coverage(dataoffset + 4, 4)
vprint(f"{prefix} Tag ID: {sprite_id}")
self.__parse_tags(ap2_version, afp_version, ap2data, subtags_offset, prefix=" " + prefix, verbose=verbose)
elif tagid == self.AP2_DEFINE_FONT:
wat, font_id = struct.unpack("<HH", ap2data[dataoffset:(dataoffset + 4)])
vprint(f" Tag ID: {font_id}")
vprint(f"{prefix} Tag ID: {font_id}")
# TODO: Switch on tag types, parse out data.
elif False:
add_coverage(dataoffset, size)
def __parse_tags(self, ap2_version: int, afp_version: int, ap2data: bytes, tags_base_offset: int, verbose: bool = False) -> None:
def __parse_tags(self, ap2_version: int, afp_version: int, ap2data: bytes, tags_base_offset: int, prefix: str = "", verbose: bool = False) -> None:
# Suppress debug text unless asked
if verbose:
def vprint(*args: Any, **kwargs: Any) -> None: # type: ignore
@ -358,28 +369,39 @@ class SWF:
def add_coverage(*args: Any, **kwargs: Any) -> None: # type: ignore
pass
tags_unknown1, tags_unknown2, tags_count, tags_unknown3, tags_unknown4, tags_offset, tags_unknown5 = struct.unpack(
"<IIiIIiI",
ap2data[tags_base_offset:(tags_base_offset + 28)]
unknown_tags_count, end_tags_count, tags_count, unknown_tags_offset, end_tags_offset, tags_offset = struct.unpack(
"<IIiIIi",
ap2data[tags_base_offset:(tags_base_offset + 24)]
)
add_coverage(tags_base_offset, 24)
# Fix up pointers.
tags_offset += tags_base_offset
add_coverage(tags_base_offset, 28)
unknown_tags_offset += tags_base_offset
end_tags_offset += tags_base_offset
# TODO: Seems that tags_unknown2 has something to do with end of movie stuff?
vprint(f"UNKNOWN: {hex(tags_unknown1)}, {hex(tags_unknown2)}, {hex(tags_unknown3)}, {hex(tags_unknown4)}, {hex(tags_unknown5)}")
for count, offset, name in [
(unknown_tags_count, unknown_tags_offset, "Unknown Tags"),
(tags_count, tags_offset, "Tags"),
(end_tags_count, end_tags_offset, "End Tags"),
]:
vprint(f"{prefix}Number of {name}: {count}")
if name != "Tags":
# TODO: I actually am not sure these are tag sections anymore.... Need to keep digging.
continue
for i in range(count):
tag = struct.unpack("<I", ap2data[offset:(offset + 4)])[0]
add_coverage(offset, 4)
vprint(f"Number of Tags: {tags_count}")
for i in range(tags_count):
tag = struct.unpack("<I", ap2data[tags_offset:(tags_offset + 4)])[0]
add_coverage(tags_offset, 4)
tagid = (tag >> 22) & 0x3FF
size = tag & 0x3FFFFF
tagid = (tag >> 22) & 0x3FF
size = ((tag & 0x3FFFFF) + 3) & 0xFFFFFFFC # Round to multiple of 4.
if size > 0x200000:
raise Exception(f"Invalid tag size {size}")
vprint(f" Tag: {hex(tagid)} ({self.tag_to_name(tagid)}), Size: {size}, Offset: {hex(tags_offset + 4)}")
self.__parse_tag(ap2data, tagid, size, tags_offset + 4, verbose=verbose)
tags_offset += size + 4 # Skip past tag header and data.
vprint(f"{prefix} Tag: {hex(tagid)} ({self.tag_to_name(tagid)}), Size: {hex(size)}, Offset: {hex(offset + 4)}")
self.__parse_tag(ap2_version, afp_version, ap2data, tagid, size, offset + 4, prefix=prefix, verbose=verbose)
offset += size + 4 # Skip past tag header and data.
def __descramble(self, scrambled_data: bytes, descramble_info: bytes) -> bytes:
swap_len = {