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SickRage/lib/hachoir_parser/audio/au.py
echel0n 0d9fbc1ad7 Welcome to our SickBeard-TVRage Edition ...
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer.

Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer.

Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk!

Enjoy!
2014-03-09 22:39:12 -07:00

89 lines
3.2 KiB
Python

"""
AU audio file parser
Author: Victor Stinner
Creation: 12 july 2006
"""
from lib.hachoir_parser import Parser
from lib.hachoir_core.field import UInt32, Enum, String, RawBytes
from lib.hachoir_core.endian import BIG_ENDIAN
from lib.hachoir_core.text_handler import displayHandler, filesizeHandler
from lib.hachoir_core.tools import createDict, humanFrequency
class AuFile(Parser):
PARSER_TAGS = {
"id": "sun_next_snd",
"category": "audio",
"file_ext": ("au", "snd"),
"mime": (u"audio/basic",),
"min_size": 24*8,
"magic": ((".snd", 0),),
"description": "Sun/NeXT audio"
}
endian = BIG_ENDIAN
CODEC_INFO = {
1: (8, u"8-bit ISDN u-law"),
2: (8, u"8-bit linear PCM"),
3: (16, u"16-bit linear PCM"),
4: (24, u"24-bit linear PCM"),
5: (32, u"32-bit linear PCM"),
6: (32, u"32-bit IEEE floating point"),
7: (64, u"64-bit IEEE floating point"),
8: (None, u"Fragmented sample data"),
9: (None, u"DSP program"),
10: (8, u"8-bit fixed point"),
11: (16, u"16-bit fixed point"),
12: (24, u"24-bit fixed point"),
13: (32, u"32-bit fixed point"),
18: (16, u"16-bit linear with emphasis"),
19: (16, u"16-bit linear compressed"),
20: (16, u"16-bit linear with emphasis and compression"),
21: (None, u"Music kit DSP commands"),
23: (None, u"4-bit ISDN u-law compressed (CCITT G.721 ADPCM)"),
24: (None, u"ITU-T G.722 ADPCM"),
25: (None, u"ITU-T G.723 3-bit ADPCM"),
26: (None, u"ITU-T G.723 5-bit ADPCM"),
27: (8, u"8-bit ISDN A-law"),
}
# Create bit rate and codec name dictionnaries
BITS_PER_SAMPLE = createDict(CODEC_INFO, 0)
CODEC_NAME = createDict(CODEC_INFO, 1)
VALID_NB_CHANNEL = set((1,2)) # FIXME: 4, 5, 7, 8 channels are supported?
def validate(self):
if self.stream.readBytes(0, 4) != ".snd":
return "Wrong file signature"
if self["channels"].value not in self.VALID_NB_CHANNEL:
return "Invalid number of channel"
return True
def getBitsPerSample(self):
"""
Get bit rate (number of bit per sample per channel),
may returns None if you unable to compute it.
"""
return self.BITS_PER_SAMPLE.get(self["codec"].value)
def createFields(self):
yield String(self, "signature", 4, 'Format signature (".snd")', charset="ASCII")
yield UInt32(self, "data_ofs", "Data offset")
yield filesizeHandler(UInt32(self, "data_size", "Data size"))
yield Enum(UInt32(self, "codec", "Audio codec"), self.CODEC_NAME)
yield displayHandler(UInt32(self, "sample_rate", "Number of samples/second"), humanFrequency)
yield UInt32(self, "channels", "Number of interleaved channels")
size = self["data_ofs"].value - self.current_size // 8
if 0 < size:
yield String(self, "info", size, "Information", strip=" \0", charset="ISO-8859-1")
size = min(self["data_size"].value, (self.size - self.current_size) // 8)
yield RawBytes(self, "audio_data", size, "Audio data")
def createContentSize(self):
return (self["data_ofs"].value + self["data_size"].value) * 8