mirror of
https://github.com/SickGear/SickGear.git
synced 2024-11-22 21:05:05 +00:00
460 lines
16 KiB
Python
460 lines
16 KiB
Python
"""
|
|
SWF (Macromedia/Adobe Flash) file parser.
|
|
|
|
Documentation:
|
|
|
|
- Alexis' SWF Reference:
|
|
http://www.m2osw.com/swf_alexref.html
|
|
- http://www.half-serious.com/swf/format/
|
|
- http://www.anotherbigidea.com/javaswf/
|
|
- http://www.gnu.org/software/gnash/
|
|
|
|
Author: Victor Stinner
|
|
Creation date: 29 october 2006
|
|
"""
|
|
|
|
from hachoir.parser import Parser
|
|
from hachoir.field import (FieldSet, ParserError,
|
|
Bit, Bits, UInt8, UInt16, Int32, UInt32, Int64, CString, Enum,
|
|
Bytes, RawBytes, NullBits, String, SubFile)
|
|
from hachoir.core.endian import LITTLE_ENDIAN, BIG_ENDIAN
|
|
from hachoir.core.text_handler import textHandler, filesizeHandler
|
|
from hachoir.core.tools import paddingSize, humanFrequency
|
|
from hachoir.parser.image.common import RGB
|
|
from hachoir.parser.image.jpeg import JpegChunk, JpegFile
|
|
from hachoir.stream import StringInputStream, ConcatStream
|
|
from hachoir.parser.common.deflate import Deflate, has_deflate
|
|
from hachoir.parser.container.action_script import parseActionScript, parseABC
|
|
import math
|
|
|
|
# Maximum file size (50 MB)
|
|
MAX_FILE_SIZE = 50 * 1024 * 1024
|
|
|
|
TWIPS = 20
|
|
|
|
|
|
class RECT(FieldSet):
|
|
endian = BIG_ENDIAN
|
|
|
|
def createFields(self):
|
|
yield Bits(self, "nbits", 5)
|
|
nbits = self["nbits"].value
|
|
if not nbits:
|
|
raise ParserError("SWF parser: Invalid RECT field size (0)")
|
|
yield Bits(self, "xmin", nbits, "X minimum in twips")
|
|
yield Bits(self, "xmax", nbits, "X maximum in twips")
|
|
yield Bits(self, "ymin", nbits, "Y minimum in twips")
|
|
yield Bits(self, "ymax", nbits, "Y maximum in twips")
|
|
size = paddingSize(self.current_size, 8)
|
|
if size:
|
|
yield NullBits(self, "padding", size)
|
|
|
|
def getWidth(self):
|
|
return math.ceil(float(self["xmax"].value) / TWIPS)
|
|
|
|
def getHeight(self):
|
|
return math.ceil(float(self["ymax"].value) / TWIPS)
|
|
|
|
def createDescription(self):
|
|
return "Rectangle: %ux%u" % (self.getWidth(), self.getHeight())
|
|
|
|
|
|
class FixedFloat16(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt8(self, "float_part")
|
|
yield UInt8(self, "int_part")
|
|
|
|
def createValue(self):
|
|
return self["int_part"].value + float(self["float_part"].value) / 256
|
|
|
|
|
|
def parseBackgroundColor(parent, size):
|
|
yield RGB(parent, "color")
|
|
|
|
|
|
def bit2hertz(field):
|
|
return humanFrequency(5512.5 * (2 ** field.value))
|
|
|
|
|
|
SOUND_CODEC_MP3 = 2
|
|
SOUND_CODEC = {
|
|
0: "RAW",
|
|
1: "ADPCM",
|
|
SOUND_CODEC_MP3: "MP3",
|
|
3: "Uncompressed",
|
|
6: "Nellymoser",
|
|
}
|
|
|
|
|
|
class SoundEnvelope(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt8(self, "count")
|
|
for index in range(self["count"].value):
|
|
yield UInt32(self, "mark44[]")
|
|
yield UInt16(self, "level0[]")
|
|
yield UInt16(self, "level1[]")
|
|
|
|
|
|
def parseSoundBlock(parent, size):
|
|
# TODO: Be able to get codec... Need to know last sound "def_sound[]" field
|
|
# if not (...)sound_header:
|
|
# raise ParserError("Sound block without header")
|
|
if True: # sound_header == SOUND_CODEC_MP3:
|
|
yield UInt16(parent, "samples")
|
|
yield UInt16(parent, "left")
|
|
size = (parent.size - parent.current_size) // 8
|
|
if size:
|
|
yield RawBytes(parent, "music_data", size)
|
|
|
|
|
|
def parseStartSound(parent, size):
|
|
yield UInt16(parent, "sound_id")
|
|
yield Bit(parent, "has_in_point")
|
|
yield Bit(parent, "has_out_point")
|
|
yield Bit(parent, "has_loops")
|
|
yield Bit(parent, "has_envelope")
|
|
yield Bit(parent, "no_multiple")
|
|
yield Bit(parent, "stop_playback")
|
|
yield NullBits(parent, "reserved", 2)
|
|
|
|
if parent["has_in_point"].value:
|
|
yield UInt32(parent, "in_point")
|
|
if parent["has_out_point"].value:
|
|
yield UInt32(parent, "out_point")
|
|
if parent["has_loops"].value:
|
|
yield UInt16(parent, "loop_count")
|
|
if parent["has_envelope"].value:
|
|
yield SoundEnvelope(parent, "envelope")
|
|
|
|
|
|
def parseDefineSound(parent, size):
|
|
yield UInt16(parent, "sound_id")
|
|
|
|
yield Bit(parent, "is_stereo")
|
|
yield Bit(parent, "is_16bit")
|
|
yield textHandler(Bits(parent, "rate", 2), bit2hertz)
|
|
yield Enum(Bits(parent, "codec", 4), SOUND_CODEC)
|
|
|
|
yield UInt32(parent, "sample_count")
|
|
|
|
if parent["codec"].value == SOUND_CODEC_MP3:
|
|
yield UInt16(parent, "len")
|
|
|
|
size = (parent.size - parent.current_size) // 8
|
|
if size:
|
|
yield RawBytes(parent, "music_data", size)
|
|
|
|
|
|
def parseSoundHeader(parent, size):
|
|
yield Bit(parent, "playback_is_stereo")
|
|
yield Bit(parent, "playback_is_16bit")
|
|
yield textHandler(Bits(parent, "playback_rate", 2), bit2hertz)
|
|
yield NullBits(parent, "reserved", 4)
|
|
|
|
yield Bit(parent, "sound_is_stereo")
|
|
yield Bit(parent, "sound_is_16bit")
|
|
yield textHandler(Bits(parent, "sound_rate", 2), bit2hertz)
|
|
yield Enum(Bits(parent, "codec", 4), SOUND_CODEC)
|
|
|
|
yield UInt16(parent, "sample_count")
|
|
|
|
if parent["codec"].value == 2:
|
|
yield UInt16(parent, "latency_seek")
|
|
|
|
|
|
class JpegHeader(FieldSet):
|
|
endian = BIG_ENDIAN
|
|
|
|
def createFields(self):
|
|
count = 1
|
|
while True:
|
|
chunk = JpegChunk(self, "jpeg_chunk[]")
|
|
yield chunk
|
|
if 1 < count and chunk["type"].value in (JpegChunk.TAG_SOI, JpegChunk.TAG_EOI):
|
|
break
|
|
count += 1
|
|
|
|
|
|
def parseJpeg(parent, size):
|
|
yield UInt16(parent, "char_id", "Character identifier")
|
|
size -= 2
|
|
|
|
code = parent["code"].value
|
|
if code != Tag.TAG_BITS:
|
|
if code == Tag.TAG_BITS_JPEG3:
|
|
yield UInt32(parent, "alpha_offset", "Character identifier")
|
|
size -= 4
|
|
|
|
addr = parent.absolute_address + parent.current_size + 16
|
|
if parent.stream.readBytes(addr, 2) in (b"\xff\xdb", b"\xff\xd8"):
|
|
header = JpegHeader(parent, "jpeg_header")
|
|
yield header
|
|
hdr_size = header.size // 8
|
|
size -= hdr_size
|
|
else:
|
|
hdr_size = 0
|
|
|
|
if code == Tag.TAG_BITS_JPEG3:
|
|
img_size = parent["alpha_offset"].value - hdr_size
|
|
else:
|
|
img_size = size
|
|
else:
|
|
img_size = size
|
|
yield SubFile(parent, "image", img_size, "JPEG picture", parser=JpegFile)
|
|
if code == Tag.TAG_BITS_JPEG3:
|
|
size = (parent.size - parent.current_size) // 8
|
|
yield RawBytes(parent, "alpha", size, "Image data")
|
|
|
|
|
|
def parseVideoFrame(parent, size):
|
|
yield UInt16(parent, "stream_id")
|
|
yield UInt16(parent, "frame_num")
|
|
if 4 < size:
|
|
yield RawBytes(parent, "video_data", size - 4)
|
|
|
|
|
|
class Export(FieldSet):
|
|
|
|
def createFields(self):
|
|
yield UInt16(self, "object_id")
|
|
yield CString(self, "name")
|
|
|
|
|
|
def parseExport(parent, size):
|
|
yield UInt16(parent, "count")
|
|
for index in range(parent["count"].value):
|
|
yield Export(parent, "export[]")
|
|
|
|
|
|
def parseProductInfo(parent, size):
|
|
yield Int32(parent, "product_id")
|
|
yield Int32(parent, "edition")
|
|
yield UInt8(parent, "major_version")
|
|
yield UInt8(parent, "minor_version")
|
|
yield Int64(parent, "build_number")
|
|
yield Int64(parent, "compilation_date")
|
|
|
|
|
|
def parseScriptLimits(parent, size):
|
|
yield UInt16(parent, "max_recursion_limit")
|
|
yield UInt16(parent, "timeout_seconds", "Seconds of processing until the SWF is considered 'stuck'")
|
|
|
|
|
|
def parseSymbolClass(parent, size):
|
|
yield UInt16(parent, "count")
|
|
for index in range(parent["count"].value):
|
|
yield UInt16(parent, "symbol_id[]")
|
|
yield CString(parent, "symbol_name[]")
|
|
|
|
|
|
def parseBinaryData(parent, size):
|
|
yield UInt16(parent, "data_id")
|
|
yield UInt32(parent, "reserved")
|
|
if size > 6:
|
|
yield RawBytes(parent, "data", size - 6)
|
|
|
|
|
|
class Tag(FieldSet):
|
|
TAG_BITS = 6
|
|
TAG_BITS_JPEG2 = 32
|
|
TAG_BITS_JPEG3 = 35
|
|
TAG_DO_ABC_DEFINE = 82
|
|
TAG_INFO = {
|
|
# SWF version 1.0
|
|
0: ("end[]", "End", None),
|
|
1: ("show_frame[]", "Show frame", None),
|
|
2: ("def_shape[]", "Define shape", None),
|
|
3: ("free_char[]", "Free character", None),
|
|
4: ("place_obj[]", "Place object", None),
|
|
5: ("remove_obj[]", "Remove object", None),
|
|
6: ("def_bits[]", "Define bits", parseJpeg),
|
|
7: ("def_but[]", "Define button", None),
|
|
8: ("jpg_table", "JPEG tables", None),
|
|
9: ("bkgd_color[]", "Set background color", parseBackgroundColor),
|
|
10: ("def_font[]", "Define font", None),
|
|
11: ("def_text[]", "Define text", None),
|
|
12: ("action[]", "Action script", parseActionScript),
|
|
13: ("def_font_info[]", "Define font info", None),
|
|
|
|
# SWF version 2.0
|
|
14: ("def_sound[]", "Define sound", parseDefineSound),
|
|
15: ("start_sound[]", "Start sound", parseStartSound),
|
|
16: ("stop_sound[]", "Stop sound", None),
|
|
17: ("def_but_sound[]", "Define button sound", None),
|
|
18: ("sound_hdr", "Sound stream header", parseSoundHeader),
|
|
19: ("sound_blk[]", "Sound stream block", parseSoundBlock),
|
|
20: ("def_bits_lossless[]", "Define bits lossless", None),
|
|
21: ("def_bits_jpeg2[]", "Define bits JPEG 2", parseJpeg),
|
|
22: ("def_shape2[]", "Define shape 2", None),
|
|
23: ("def_but_cxform[]", "Define button CXFORM", None),
|
|
24: ("protect", "File is protected", None),
|
|
|
|
# SWF version 3.0
|
|
25: ("path_are_ps[]", "Paths are Postscript", None),
|
|
26: ("place_obj2[]", "Place object 2", None),
|
|
28: ("remove_obj2[]", "Remove object 2", None),
|
|
29: ("sync_frame[]", "Synchronize frame", None),
|
|
31: ("free_all[]", "Free all", None),
|
|
32: ("def_shape3[]", "Define shape 3", None),
|
|
33: ("def_text2[]", "Define text 2", None),
|
|
34: ("def_but2[]", "Define button2", None),
|
|
35: ("def_bits_jpeg3[]", "Define bits JPEG 3", parseJpeg),
|
|
36: ("def_bits_lossless2[]", "Define bits lossless 2", None),
|
|
39: ("def_sprite[]", "Define sprite", None),
|
|
40: ("name_character[]", "Name character", None),
|
|
41: ("product_info", "Generator product info", parseProductInfo),
|
|
42: ("generator_text[]", "Generator text", None),
|
|
43: ("frame_label[]", "Frame label", None),
|
|
45: ("sound_hdr2[]", "Sound stream header2", parseSoundHeader),
|
|
46: ("def_morph_shape[]", "Define morph shape", None),
|
|
47: ("gen_frame[]", "Generate frame", None),
|
|
48: ("def_font2[]", "Define font 2", None),
|
|
49: ("tpl_command[]", "Template command", None),
|
|
|
|
# SWF version 4.0
|
|
37: ("def_text_field[]", "Define text field", None),
|
|
38: ("def_quicktime_movie[]", "Define QuickTime movie", None),
|
|
|
|
# SWF version 5.0
|
|
50: ("def_cmd_obj[]", "Define command object", None),
|
|
51: ("flash_generator", "Flash generator", None),
|
|
52: ("gen_ext_font[]", "Gen external font", None),
|
|
56: ("export[]", "Export", parseExport),
|
|
57: ("import[]", "Import", None),
|
|
58: ("ebnable_debug", "Enable debug", None),
|
|
|
|
# SWF version 6.0
|
|
59: ("do_init_action[]", "Do init action", None),
|
|
60: ("video_str[]", "Video stream", None),
|
|
61: ("video_frame[]", "Video frame", parseVideoFrame),
|
|
62: ("def_font_info2[]", "Define font info 2", None),
|
|
63: ("mx4[]", "MX4", None),
|
|
64: ("enable_debug2", "Enable debugger 2", None),
|
|
|
|
# SWF version 7.0
|
|
65: ("script_limits[]", "Script limits", parseScriptLimits),
|
|
66: ("tab_index[]", "Set tab index", None),
|
|
|
|
# SWF version 8.0
|
|
69: ("file_attr[]", "File attributes", None),
|
|
70: ("place_obj3[]", "Place object 3", None),
|
|
71: ("import2[]", "Import a definition list from another movie", None),
|
|
73: ("def_font_align[]", "Define font alignment zones", None),
|
|
74: ("csm_txt_set[]", "CSM text settings", None),
|
|
75: ("def_font3[]", "Define font text 3", None),
|
|
77: ("metadata[]", "XML code describing the movie", None),
|
|
78: ("def_scale_grid[]", "Define scaling factors", None),
|
|
83: ("def_shape4[]", "Define shape 4", None),
|
|
84: ("def_morph2[]", "Define a morphing shape 2", None),
|
|
|
|
# SWF version 9.0
|
|
72: ("do_abc[]", "SWF 9 ActionScript container; actions only", parseABC),
|
|
76: ("symbol_class[]", "Instantiate objects from a set of classes", parseSymbolClass),
|
|
82: ("do_abc_define[]", "SWF 9 ActionScript container; identifier, name, actions", parseABC),
|
|
86: ("def_scene_frame[]", "Define raw data for scenes and frames", None),
|
|
87: ("def_binary_data[]", "Defines a buffer of any size with any binary user data", parseBinaryData),
|
|
88: ("def_font_name[]", "Define the legal font name and copyright", None),
|
|
}
|
|
|
|
def __init__(self, *args):
|
|
FieldSet.__init__(self, *args)
|
|
size = self["length"].value
|
|
if self[0].name == "length_ext":
|
|
self._size = (6 + size) * 8
|
|
else:
|
|
self._size = (2 + size) * 8
|
|
code = self["code"].value
|
|
if code in self.TAG_INFO:
|
|
self._name, self._description, self.parser = self.TAG_INFO[code]
|
|
else:
|
|
self.parser = None
|
|
|
|
def createFields(self):
|
|
if self.stream.readBits(self.absolute_address, 6, self.endian) == 63:
|
|
yield Bits(self, "length_ext", 6)
|
|
yield Bits(self, "code", 10)
|
|
yield filesizeHandler(UInt32(self, "length"))
|
|
else:
|
|
yield filesizeHandler(Bits(self, "length", 6))
|
|
yield Bits(self, "code", 10)
|
|
size = self["length"].value
|
|
if 0 < size:
|
|
if self.parser:
|
|
yield from self.parser(self, size)
|
|
else:
|
|
yield RawBytes(self, "data", size)
|
|
|
|
def createDescription(self):
|
|
return "Tag: %s (%s)" % (self["code"].display, self["length"].display)
|
|
|
|
|
|
class SwfFile(Parser):
|
|
VALID_VERSIONS = set(range(1, 10 + 1))
|
|
PARSER_TAGS = {
|
|
"id": "swf",
|
|
"category": "container",
|
|
"file_ext": ["swf"],
|
|
"mime": ("application/x-shockwave-flash",),
|
|
"min_size": 64,
|
|
"description": "Macromedia Flash data"
|
|
}
|
|
PARSER_TAGS["magic"] = []
|
|
for version in VALID_VERSIONS:
|
|
PARSER_TAGS["magic"].append((b"FWS" + bytes([version]), 0))
|
|
PARSER_TAGS["magic"].append((b"CWS" + bytes([version]), 0))
|
|
endian = LITTLE_ENDIAN
|
|
SWF_SCALE_FACTOR = 1.0 / 20
|
|
|
|
def validate(self):
|
|
if self.stream.readBytes(0, 3) not in (b"FWS", b"CWS"):
|
|
return "Wrong file signature"
|
|
if self["version"].value not in self.VALID_VERSIONS:
|
|
return "Unknown version"
|
|
if MAX_FILE_SIZE < self["filesize"].value:
|
|
return "File too big (%u)" % self["filesize"].value
|
|
if self["signature"].value == "FWS":
|
|
if self["rect/padding"].value != 0:
|
|
return "Unknown rectangle padding value"
|
|
return True
|
|
|
|
def createFields(self):
|
|
yield String(self, "signature", 3, "SWF format signature", charset="ASCII")
|
|
yield UInt8(self, "version")
|
|
yield filesizeHandler(UInt32(self, "filesize"))
|
|
if self["signature"].value != "CWS":
|
|
yield RECT(self, "rect")
|
|
yield FixedFloat16(self, "frame_rate")
|
|
yield UInt16(self, "frame_count")
|
|
|
|
while not self.eof:
|
|
yield Tag(self, "tag[]")
|
|
else:
|
|
size = (self.size - self.current_size) // 8
|
|
if has_deflate:
|
|
data = Deflate(Bytes(self, "compressed_data", size), False)
|
|
|
|
def createInputStream(cis, source=None, **args):
|
|
stream = cis(source=source)
|
|
header = StringInputStream(
|
|
b"FWS" + self.stream.readBytes(3 * 8, 5))
|
|
args.setdefault("tags", []).append(("class", SwfFile))
|
|
return ConcatStream((header, stream), source=stream.source, **args)
|
|
data.setSubIStream(createInputStream)
|
|
yield data
|
|
else:
|
|
yield Bytes(self, "compressed_data", size)
|
|
|
|
def createDescription(self):
|
|
desc = ["version %u" % self["version"].value]
|
|
if self["signature"].value == "CWS":
|
|
desc.append("compressed")
|
|
return "Macromedia Flash data: %s" % (", ".join(desc))
|
|
|
|
def createContentSize(self):
|
|
if self["signature"].value == "FWS":
|
|
return self["filesize"].value * 8
|
|
else:
|
|
# TODO: Size of compressed Flash?
|
|
return None
|