class VGM150(mrc.Block):
magic = mrc.Const(mrc.Bytes(0x00, length=0x04, default=b'Vgm '), b'Vgm ')
eof_offset = mrc.UInt32_LE(0x04)
version = mrc.UInt32_LE(0x08)
sn76489_clock = mrc.UInt32_LE(0x0c)
ym2413_clock = mrc.UInt32_LE(0x10)
gd3_offset = mrc.UInt32_LE(0x14)
total_sample_count = mrc.UInt32_LE(0x18)
loop_offset = mrc.UInt32_LE(0x1c)
loop_sample_count = mrc.UInt32_LE(0x20)
rate = mrc.UInt32_LE(0x24)
sn76489_feedback = mrc.UInt16_LE(0x28)
sn76489_shiftwidth = mrc.UInt8(0x2a)
sn76489_flags = mrc.UInt8(0x2b)
ym2612_clock = mrc.UInt32_LE(0x2c)
ym2151_clock = mrc.UInt32_LE(0x30)
vgm_data_offset_raw = mrc.UInt32_LE(0x34)
header_extra = mrc.Bytes(0x38, length=0x08, default=b'\x00' * 8)
@property
def vgm_data_offset(self):
if self.version >= 0x150:
return self.vgm_data_offset_raw + 0x34
return 0x40
vgm_data = mrc.ChunkField(COMMAND_MAP,
mrc.Ref('vgm_data_offset'),
id_field=mrc.UInt8,
id_enum=Command,
default_klass=mrc.Unknown,
stream_end=b'\x66')
extra = mrc.Bytes(mrc.EndOffset('vgm_data'), default=b'')
class VOC(mrc.Block):
magic = mrc.Const(mrc.Bytes(0x00, length=0x14), b'Creative Voice File\x1a')
header_size = mrc.UInt16_LE(0x14)
version = mrc.Bytes(0x16, length=2)
checksum = mrc.Bytes(0x18, length=2)
chunks = mrc.ChunkField(VOC_CHUNK_MAP,
0x1a,
stream=True,
id_field=mrc.UInt8,
length_field=mrc.UInt24_LE,
stream_end=b'\x00')
@property
def audio_chunk(self):
# TODO: this is pretty cheap theatrics
test = [x for x in self.chunks if x.id == 1]
if test:
return test[0].obj
return None
def __init__(self, *args, **kwargs):
self.audio = aud.Wave(self,
mrc.Ref('audio_chunk.data'),
channels=1,
sample_rate=mrc.Ref('audio_chunk.sample_rate'),
format_type=int,
field_size=mrc.Ref('audio_chunk.sample_width'),
signedness=mrc.Ref('audio_chunk.signedness'),
endian='little')
super().__init__(*args, **kwargs)
class Test(mrc.Block):
data = mrc.ChunkField(CHUNK_MAP,
0x00,
stream_end=b'\xff',
id_field=mrc.UInt8,
length_field=mrc.UInt8,
fill=b'\x00')
bonus = mrc.Bytes(mrc.EndOffset('data'))
class RIFXMap(mrc.Block):
CHUNK_MAP = {}
form_type = mrc.Bytes(0x00, length=4)
stream = mrc.ChunkField(mrc.Ref('CHUNK_MAP'),
0x04,
id_field=mrc.UInt32_P,
length_field=mrc.UInt32_P,
alignment=2,
fill=b'',
default_klass=mrc.Unknown)
class World(mrc.Block):
BLOCK_MAP = {
b'HEAD': HEAD,
b'ANIM': ANIM,
}
chunks = mrc.ChunkField(BLOCK_MAP,
0x00,
id_size=4,
length_field=mrc.UInt32_BE,
default_klass=mrc.Unknown)
class RIFF(mrc.Block):
CHUNK_MAP = {}
magic = mrc.Const(mrc.Bytes(0x00, length=4), b'RIFF')
size = mrc.UInt32_LE(0x04)
form_type = mrc.Bytes(0x08, length=4)
stream = mrc.ChunkField(mrc.Ref('CHUNK_MAP'),
0x0c,
length=mrc.Ref('size'),
id_field=mrc.UInt32_BE,
length_field=mrc.UInt32_LE,
alignment=2,
default_klass=mrc.Unknown)
class MV93_V5(mrc.Block):
_endian = 'big'
CHUNK_MAP_CLASS = DirectorV5Map.CHUNK_MAP
magic = mrc.Const(mrc.Bytes(0x00, length=4), b'RIFX')
data_length = mrc.UInt32_P(0x04)
magic2 = mrc.Const(mrc.Bytes(0x08, length=4), b'MV93')
stream = mrc.ChunkField(CHUNK_MAP_CLASS,
0x0c,
stream=True,
id_field=mrc.UInt32_P,
length_field=mrc.UInt32_P,
default_klass=mrc.Unknown,
alignment=0x2,
fill=b'')
class ScriptCode(mrc.Block):
instructions = mrc.ChunkField(LINGO_V4_MAP,
0x00,
id_field=mrc.UInt8,
id_enum=LingoV4,
default_klass=Blank)
class Test( mrc.Block ):
data = mrc.ChunkField( CHUNK_MAP, 0x00, stream_end=b'\x00', id_size=1 )
bonus = mrc.Bytes( mrc.EndOffset( 'data' ) )
class Outer(mrc.Block):
CHUNK_MAP = {b'TEST': Inner}
field = mrc.ChunkField(CHUNK_MAP, 0x00)
