mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-24 13:55:16 +00:00
424 lines
15 KiB
Python
424 lines
15 KiB
Python
"""
|
|
Parser of FastTrackerII Extended Module (XM) version 1.4
|
|
|
|
Documents:
|
|
- Modplug source code (file modplug/soundlib/Load_xm.cpp)
|
|
http://sourceforge.net/projects/modplug
|
|
- Dumb source code (files include/dumb.h and src/it/readxm.c
|
|
http://dumb.sf.net/
|
|
- Documents of "XM" format on Wotsit
|
|
http://www.wotsit.org
|
|
|
|
Author: Christophe GISQUET <christophe.gisquet@free.fr>
|
|
Creation: 8th February 2007
|
|
"""
|
|
|
|
from hachoir.parser import Parser
|
|
from hachoir.field import (StaticFieldSet, FieldSet,
|
|
Bit, RawBits, Bits,
|
|
UInt32, UInt16, UInt8, Int8, Enum,
|
|
RawBytes, String, GenericVector)
|
|
from hachoir.core.endian import LITTLE_ENDIAN, BIG_ENDIAN
|
|
from hachoir.core.text_handler import textHandler, filesizeHandler, hexadecimal
|
|
from hachoir.parser.audio.modplug import ParseModplugMetadata
|
|
from hachoir.parser.common.tracker import NOTE_NAME
|
|
|
|
|
|
def parseSigned(val):
|
|
return "%i" % (val.value - 128)
|
|
|
|
|
|
# From dumb
|
|
SEMITONE_BASE = 1.059463094359295309843105314939748495817
|
|
PITCH_BASE = 1.000225659305069791926712241547647863626
|
|
|
|
SAMPLE_LOOP_MODE = ("No loop", "Forward loop", "Ping-pong loop", "Undef")
|
|
|
|
|
|
class SampleType(FieldSet):
|
|
static_size = 8
|
|
|
|
def createFields(self):
|
|
yield Bits(self, "unused[]", 4)
|
|
yield Bit(self, "16bits")
|
|
yield Bits(self, "unused[]", 1)
|
|
yield Enum(Bits(self, "loop_mode", 2), SAMPLE_LOOP_MODE)
|
|
|
|
|
|
class SampleHeader(FieldSet):
|
|
static_size = 40 * 8
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "length")
|
|
yield UInt32(self, "loop_start")
|
|
yield UInt32(self, "loop_end")
|
|
yield UInt8(self, "volume")
|
|
yield Int8(self, "fine_tune")
|
|
yield SampleType(self, "type")
|
|
yield UInt8(self, "panning")
|
|
yield Int8(self, "relative_note")
|
|
yield UInt8(self, "reserved")
|
|
yield String(self, "name", 22, charset="ASCII", strip=' \0')
|
|
|
|
def createValue(self):
|
|
bytes = 1 + self["type/16bits"].value
|
|
C5_speed = int(16726.0 * pow(SEMITONE_BASE, self["relative_note"].value)
|
|
* pow(PITCH_BASE, self["fine_tune"].value * 2))
|
|
return "%s, %ubits, %u samples, %uHz" % \
|
|
(self["name"].display, 8 * bytes,
|
|
self["length"].value / bytes, C5_speed)
|
|
|
|
|
|
class StuffType(StaticFieldSet):
|
|
format = (
|
|
(Bits, "unused", 5),
|
|
(Bit, "loop"),
|
|
(Bit, "sustain"),
|
|
(Bit, "on")
|
|
)
|
|
|
|
|
|
class InstrumentSecondHeader(FieldSet):
|
|
static_size = 234 * 8
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "sample_header_size")
|
|
yield GenericVector(self, "notes", 96, UInt8, "sample")
|
|
yield GenericVector(self, "volume_envelope", 24, UInt16, "point")
|
|
yield GenericVector(self, "panning_envelope", 24, UInt16, "point")
|
|
yield UInt8(self, "volume_points", r"Number of volume points")
|
|
yield UInt8(self, "panning_points", r"Number of panning points")
|
|
yield UInt8(self, "volume_sustain_point")
|
|
yield UInt8(self, "volume_loop_start_point")
|
|
yield UInt8(self, "volume_loop_end_point")
|
|
yield UInt8(self, "panning_sustain_point")
|
|
yield UInt8(self, "panning_loop_start_point")
|
|
yield UInt8(self, "panning_loop_end_point")
|
|
yield StuffType(self, "volume_type")
|
|
yield StuffType(self, "panning_type")
|
|
yield UInt8(self, "vibrato_type")
|
|
yield UInt8(self, "vibrato_sweep")
|
|
yield UInt8(self, "vibrato_depth")
|
|
yield UInt8(self, "vibrato_rate")
|
|
yield UInt16(self, "volume_fadeout")
|
|
yield GenericVector(self, "reserved", 11, UInt16, "word")
|
|
|
|
|
|
def createInstrumentContentSize(s, addr):
|
|
start = addr
|
|
samples = s.stream.readBits(addr + 27 * 8, 16, LITTLE_ENDIAN)
|
|
# Seek to end of header (1st + 2nd part)
|
|
addr += 8 * s.stream.readBits(addr, 32, LITTLE_ENDIAN)
|
|
|
|
sample_size = 0
|
|
if samples:
|
|
for index in range(samples):
|
|
# Read the sample size from the header
|
|
sample_size += s.stream.readBits(addr, 32, LITTLE_ENDIAN)
|
|
# Seek to next sample header
|
|
addr += SampleHeader.static_size
|
|
|
|
return addr - start + 8 * sample_size
|
|
|
|
|
|
class Instrument(FieldSet):
|
|
|
|
def __init__(self, parent, name):
|
|
FieldSet.__init__(self, parent, name)
|
|
self._size = createInstrumentContentSize(self, self.absolute_address)
|
|
self.info(self.createDescription())
|
|
|
|
# Seems to fix things...
|
|
def fixInstrumentHeader(self):
|
|
size = self["size"].value - self.current_size // 8
|
|
if size:
|
|
yield RawBytes(self, "unknown_data", size)
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "size")
|
|
yield String(self, "name", 22, charset="ASCII", strip=" \0")
|
|
# Doc says type is always 0, but I've found values of 24 and 96 for
|
|
# the _same_ song here, just different download sources for the file
|
|
yield UInt8(self, "type")
|
|
yield UInt16(self, "samples")
|
|
num = self["samples"].value
|
|
self.info(self.createDescription())
|
|
|
|
if num:
|
|
yield InstrumentSecondHeader(self, "second_header")
|
|
|
|
yield from self.fixInstrumentHeader()
|
|
|
|
# This part probably wrong
|
|
sample_size = []
|
|
for index in range(num):
|
|
sample = SampleHeader(self, "sample_header[]")
|
|
yield sample
|
|
sample_size.append(sample["length"].value)
|
|
|
|
for size in sample_size:
|
|
if size:
|
|
yield RawBytes(self, "sample_data[]", size, "Deltas")
|
|
else:
|
|
yield from self.fixInstrumentHeader()
|
|
|
|
def createDescription(self):
|
|
return "Instrument '%s': %i samples, header %i bytes" % \
|
|
(self["name"].value, self["samples"].value, self["size"].value)
|
|
|
|
|
|
VOLUME_NAME = (
|
|
"Volume slide down", "Volume slide up", "Fine volume slide down",
|
|
"Fine volume slide up", "Set vibrato speed", "Vibrato",
|
|
"Set panning", "Panning slide left", "Panning slide right",
|
|
"Tone porta", "Unhandled")
|
|
|
|
|
|
def parseVolume(val):
|
|
val = val.value
|
|
if 0x10 <= val <= 0x50:
|
|
return "Volume %i" % val - 16
|
|
else:
|
|
return VOLUME_NAME[val / 16 - 6]
|
|
|
|
|
|
class RealBit(RawBits):
|
|
static_size = 1
|
|
|
|
def __init__(self, parent, name, description=None):
|
|
RawBits.__init__(self, parent, name, 1, description=description)
|
|
|
|
def createValue(self):
|
|
return self._parent.stream.readBits(self.absolute_address, 1, BIG_ENDIAN)
|
|
|
|
|
|
class NoteInfo(StaticFieldSet):
|
|
format = (
|
|
(RawBits, "unused", 2),
|
|
(RealBit, "has_parameter"),
|
|
(RealBit, "has_type"),
|
|
(RealBit, "has_volume"),
|
|
(RealBit, "has_instrument"),
|
|
(RealBit, "has_note")
|
|
)
|
|
|
|
|
|
EFFECT_NAME = (
|
|
"Arppegio", "Porta up", "Porta down", "Tone porta", "Vibrato",
|
|
"Tone porta+Volume slide", "Vibrato+Volume slide", "Tremolo",
|
|
"Set panning", "Sample offset", "Volume slide", "Position jump",
|
|
"Set volume", "Pattern break", None, "Set tempo/BPM",
|
|
"Set global volume", "Global volume slide", "Unused", "Unused",
|
|
"Unused", "Set envelope position", "Unused", "Unused",
|
|
"Panning slide", "Unused", "Multi retrig note", "Unused",
|
|
"Tremor", "Unused", "Unused", "Unused", None)
|
|
|
|
EFFECT_E_NAME = (
|
|
"Unknown", "Fine porta up", "Fine porta down",
|
|
"Set gliss control", "Set vibrato control", "Set finetune",
|
|
"Set loop begin/loop", "Set tremolo control", "Retrig note",
|
|
"Fine volume slide up", "Fine volume slide down", "Note cut",
|
|
"Note delay", "Pattern delay")
|
|
|
|
|
|
class Effect(RawBits):
|
|
|
|
def __init__(self, parent, name):
|
|
RawBits.__init__(self, parent, name, 8)
|
|
|
|
def createValue(self):
|
|
t = self.parent.stream.readBits(
|
|
self.absolute_address, 8, LITTLE_ENDIAN)
|
|
param = self.parent.stream.readBits(
|
|
self.absolute_address + 8, 8, LITTLE_ENDIAN)
|
|
if t == 0x0E:
|
|
return EFFECT_E_NAME[param >> 4] + " %i" % (param & 0x07)
|
|
elif t == 0x21:
|
|
return ("Extra fine porta up", "Extra fine porta down")[param >> 4]
|
|
else:
|
|
return EFFECT_NAME[t]
|
|
|
|
|
|
class Note(FieldSet):
|
|
|
|
def __init__(self, parent, name, desc=None):
|
|
FieldSet.__init__(self, parent, name, desc)
|
|
self.flags = self.stream.readBits(
|
|
self.absolute_address, 8, LITTLE_ENDIAN)
|
|
if self.flags & 0x80:
|
|
# TODO: optimize bitcounting with a table:
|
|
# http://graphics.stanford.edu/~seander/bithacks.html#CountBitsSetTable
|
|
self._size = 8
|
|
if self.flags & 0x01:
|
|
self._size += 8
|
|
if self.flags & 0x02:
|
|
self._size += 8
|
|
if self.flags & 0x04:
|
|
self._size += 8
|
|
if self.flags & 0x08:
|
|
self._size += 8
|
|
if self.flags & 0x10:
|
|
self._size += 8
|
|
else:
|
|
self._size = 5 * 8
|
|
|
|
def createFields(self):
|
|
# This stupid shit gets the LSB, not the MSB...
|
|
self.info("Note info: 0x%02X" %
|
|
self.stream.readBits(self.absolute_address, 8, LITTLE_ENDIAN))
|
|
yield RealBit(self, "is_extended")
|
|
if self["is_extended"].value:
|
|
info = NoteInfo(self, "info")
|
|
yield info
|
|
if info["has_note"].value:
|
|
yield Enum(UInt8(self, "note"), NOTE_NAME)
|
|
if info["has_instrument"].value:
|
|
yield UInt8(self, "instrument")
|
|
if info["has_volume"].value:
|
|
yield textHandler(UInt8(self, "volume"), parseVolume)
|
|
if info["has_type"].value:
|
|
yield Effect(self, "effect_type")
|
|
if info["has_parameter"].value:
|
|
yield textHandler(UInt8(self, "effect_parameter"), hexadecimal)
|
|
else:
|
|
yield Enum(Bits(self, "note", 7), NOTE_NAME)
|
|
yield UInt8(self, "instrument")
|
|
yield textHandler(UInt8(self, "volume"), parseVolume)
|
|
yield Effect(self, "effect_type")
|
|
yield textHandler(UInt8(self, "effect_parameter"), hexadecimal)
|
|
|
|
def createDescription(self):
|
|
if "info" in self:
|
|
info = self["info"]
|
|
desc = []
|
|
if info["has_note"].value:
|
|
desc.append(self["note"].display)
|
|
if info["has_instrument"].value:
|
|
desc.append("instrument %i" % self["instrument"].value)
|
|
if info["has_volume"].value:
|
|
desc.append(self["has_volume"].display)
|
|
if info["has_type"].value:
|
|
desc.append("effect %s" % self["effect_type"].value)
|
|
if info["has_parameter"].value:
|
|
desc.append("parameter %i" % self["effect_parameter"].value)
|
|
else:
|
|
desc = (self["note"].display, "instrument %i" % self["instrument"].value,
|
|
self["has_volume"].display, "effect %s" % self[
|
|
"effect_type"].value,
|
|
"parameter %i" % self["effect_parameter"].value)
|
|
if desc:
|
|
return "Note %s" % ", ".join(desc)
|
|
else:
|
|
return "Note"
|
|
|
|
|
|
class Row(FieldSet):
|
|
|
|
def createFields(self):
|
|
for index in range(self["/header/channels"].value):
|
|
yield Note(self, "note[]")
|
|
|
|
|
|
def createPatternContentSize(s, addr):
|
|
return 8 * (s.stream.readBits(addr, 32, LITTLE_ENDIAN) +
|
|
s.stream.readBits(addr + 7 * 8, 16, LITTLE_ENDIAN))
|
|
|
|
|
|
class Pattern(FieldSet):
|
|
|
|
def __init__(self, parent, name, desc=None):
|
|
FieldSet.__init__(self, parent, name, desc)
|
|
self._size = createPatternContentSize(self, self.absolute_address)
|
|
|
|
def createFields(self):
|
|
yield UInt32(self, "header_size", r"Header length (9)")
|
|
yield UInt8(self, "packing_type", r"Packing type (always 0)")
|
|
yield UInt16(self, "rows", r"Number of rows in pattern (1..256)")
|
|
yield UInt16(self, "data_size", r"Packed patterndata size")
|
|
rows = self["rows"].value
|
|
self.info("Pattern: %i rows" % rows)
|
|
for index in range(rows):
|
|
yield Row(self, "row[]")
|
|
|
|
def createDescription(self):
|
|
return "Pattern with %i rows" % self["rows"].value
|
|
|
|
|
|
class Header(FieldSet):
|
|
MAGIC = b"Extended Module: "
|
|
static_size = 336 * 8
|
|
|
|
def createFields(self):
|
|
yield String(self, "signature", 17, "XM signature", charset="ASCII")
|
|
yield String(self, "title", 20, "XM title", charset="ASCII", strip=' ')
|
|
yield UInt8(self, "marker", "Marker (0x1A)")
|
|
yield String(self, "tracker_name", 20, "XM tracker name", charset="ASCII", strip=' ')
|
|
yield UInt8(self, "format_minor")
|
|
yield UInt8(self, "format_major")
|
|
yield filesizeHandler(UInt32(self, "header_size", "Header size (276)"))
|
|
yield UInt16(self, "song_length", "Length in patten order table")
|
|
yield UInt16(self, "restart", "Restart position")
|
|
yield UInt16(self, "channels", "Number of channels (2,4,6,8,10,...,32)")
|
|
yield UInt16(self, "patterns", "Number of patterns (max 256)")
|
|
yield UInt16(self, "instruments", "Number of instruments (max 128)")
|
|
yield Bit(self, "amiga_ftable", "Amiga frequency table")
|
|
yield Bit(self, "linear_ftable", "Linear frequency table")
|
|
yield Bits(self, "unused", 14)
|
|
yield UInt16(self, "tempo", "Default tempo")
|
|
yield UInt16(self, "bpm", "Default BPM")
|
|
yield GenericVector(self, "pattern_order", 256, UInt8, "order")
|
|
|
|
def createDescription(self):
|
|
return "'%s' by '%s'" % (
|
|
self["title"].value, self["tracker_name"].value)
|
|
|
|
|
|
class XMModule(Parser):
|
|
PARSER_TAGS = {
|
|
"id": "fasttracker2",
|
|
"category": "audio",
|
|
"file_ext": ("xm",),
|
|
"mime": (
|
|
'audio/xm', 'audio/x-xm',
|
|
'audio/module-xm', 'audio/mod', 'audio/x-mod'),
|
|
"magic": ((Header.MAGIC, 0),),
|
|
"min_size": Header.static_size + 29 * 8, # Header + 1 empty instrument
|
|
"description": "FastTracker2 module"
|
|
}
|
|
endian = LITTLE_ENDIAN
|
|
|
|
def validate(self):
|
|
header = self.stream.readBytes(0, 17)
|
|
if header != Header.MAGIC:
|
|
return "Invalid signature %a" % header
|
|
if self["/header/header_size"].value != 276:
|
|
return "Unknown header size (%u)" % self["/header/header_size"].value
|
|
return True
|
|
|
|
def createFields(self):
|
|
yield Header(self, "header")
|
|
for index in range(self["/header/patterns"].value):
|
|
yield Pattern(self, "pattern[]")
|
|
for index in range(self["/header/instruments"].value):
|
|
yield Instrument(self, "instrument[]")
|
|
|
|
# Metadata added by ModPlug - can be discarded
|
|
yield from ParseModplugMetadata(self)
|
|
|
|
def createContentSize(self):
|
|
# Header size
|
|
size = Header.static_size
|
|
|
|
# Add patterns size
|
|
for index in range(self["/header/patterns"].value):
|
|
size += createPatternContentSize(self, size)
|
|
|
|
# Add instruments size
|
|
for index in range(self["/header/instruments"].value):
|
|
size += createInstrumentContentSize(self, size)
|
|
|
|
# Not reporting Modplug metadata
|
|
return size
|
|
|
|
def createDescription(self):
|
|
return self["header"].description
|