def getHachoirOptions(parser):
"""
Create an option group (type optparse.OptionGroup) of Hachoir
library options.
"""
def setLogFilename(*args):
log.setFilename(args[2])
common = OptionGroup(parser, _("Hachoir library"),
"Configure Hachoir library")
common.add_option("--verbose",
help=_("Verbose mode"),
default=False,
action="store_true")
common.add_option("--log",
help=_("Write log in a file"),
type="string",
action="callback",
callback=setLogFilename)
common.add_option("--quiet",
help=_("Quiet mode (don't display warning)"),
default=False,
action="store_true")
common.add_option("--debug",
help=_("Debug mode"),
default=False,
action="store_true")
return common
def useHeader(self, header):
self.width = header["width"].value
self.height = header["height"].value
# Read number of colors and pixel format
if "/palette/size" in header:
nb_colors = header["/palette/size"].value // 3
else:
nb_colors = None
if not header["has_palette"].value:
if header["has_alpha"].value:
self.pixel_format = _("RGBA")
else:
self.pixel_format = _("RGB")
elif "/transparency" in header:
self.pixel_format = _("Color index with transparency")
if nb_colors:
nb_colors -= 1
else:
self.pixel_format = _("Color index")
self.bits_per_pixel = pngBitsPerPixel(header)
if nb_colors:
self.nb_colors = nb_colors
# Read compression, timestamp, etc.
self.compression = header["compression"].display
def processMovieHeader(self, hdr):
self.creation_date = hdr["creation_date"].value
self.last_modification = hdr["lastmod_date"].value
self.duration = timedelta(seconds=float(hdr["duration"].value) /
hdr["time_scale"].value)
self.comment = _("Play speed: %.1f%%") % (hdr["play_speed"].value *
100)
self.comment = _("User volume: %.1f%%") % (float(hdr["volume"].value) *
100)
def __init__(self, size, address, got=None):
self.size = size
self.address = address
self.got = got
if self.got is not None:
msg = _("Can't read %u bits at address %u (got %u bits)") % (
self.size, self.address, self.got)
else:
msg = _("Can't read %u bits at address %u") % (self.size,
self.address)
InputStreamError.__init__(self, msg)
def useFile(self, field):
meta = Metadata(self)
meta.filename = field["filename"].value
meta.file_size = field["filesize"].value
meta.creation_date = field["timestamp"].value
attr = field["attributes"].value
if attr != "(none)":
meta.file_attr = attr
if meta.has("filename"):
title = _("File \"%s\"") % meta.getText('filename')
else:
title = _("File")
self.addGroup(field.name, meta, title)
def __init__(self, stream, **args):
validate = args.pop("validate", False)
self._mime_type = None
while validate:
nbits = self.getParserTags()["min_size"]
if stream.sizeGe(nbits):
res = self.validate()
if res is True:
break
res = makeUnicode(res)
else:
res = _("stream is smaller than %s.%s bytes" % divmod(nbits, 8))
raise ValidateError(res or _("no reason given"))
self._autofix = True
def __init__(self, stream, **args):
validate = args.pop("validate", False)
self._mime_type = None
while validate:
nbits = self.getParserTags()["min_size"]
if stream.sizeGe(nbits):
res = self.validate()
if res is True:
break
res = makeUnicode(res)
else:
res = _("stream is smaller than %s.%s bytes" % divmod(nbits, 8))
raise ValidateError(res or _("no reason given"))
self._autofix = True
def extract(self, gif):
self.useScreen(gif["/screen"])
if self.has("bits_per_pixel"):
self.nb_colors = (1 << self.get('bits_per_pixel'))
self.compression = _("LZW")
self.format_version = "GIF version %s" % gif["version"].value
for comments in gif.array("comments"):
for comment in gif.array(comments.name + "/comment"):
self.comment = comment.value
if ("graphic_ctl/has_transp" in gif
and gif["graphic_ctl/has_transp"].value):
self.pixel_format = _("Color index with transparency")
else:
self.pixel_format = _("Color index")
def extract(self, tar):
max_nb = maxNbFile(self)
for index, field in enumerate(tar.array("file")):
if max_nb is not None and max_nb <= index:
self.warning("TAR archive contains many files, "
"but only first %s files are processed"
% max_nb)
break
meta = Metadata(self)
self.extractFile(field, meta)
if meta.has("filename"):
title = _('File "%s"') % meta.getText('filename')
else:
title = _("File")
self.addGroup(field.name, meta, title)
def startOfFrame(self, sof):
# Set compression method
key = sof["../type"].value
self.compression = "JPEG (%s)" % JpegChunk.START_OF_FRAME[key]
# Read image size and bits/pixel
self.width = sof["width"].value
self.height = sof["height"].value
nb_components = sof["nr_components"].value
self.bits_per_pixel = 8 * nb_components
if nb_components == 3:
self.pixel_format = _("YCbCr")
elif nb_components == 1:
self.pixel_format = _("Grayscale")
self.nb_colors = 256
def __delitem__(self, index):
"""
Delete item at position index. May raise IndexError.
>>> d=Dict( ((6, 'six'), (9, 'neuf'), (4, 'quatre')) )
>>> del d[1]
>>> d
{6: 'six', 4: 'quatre'}
"""
if index < 0:
index += len(self._value_list)
if not (0 <= index < len(self._value_list)):
raise IndexError(_("list assignment index out of range (%s/%s)")
% (index, len(self._value_list)))
del self._value_list[index]
del self._key_list[index]
# First loop which may alter self._index
for key, item_index in self._index.iteritems():
if item_index == index:
del self._index[key]
break
# Second loop update indexes
for key, item_index in self._index.iteritems():
if index < item_index:
self._index[key] -= 1
def computeVariableBitrate(self, mp3):
if self.quality <= QUALITY_FAST:
return
count = 0
if QUALITY_BEST <= self.quality:
self.warning("Process all MPEG audio frames to compute exact duration")
max_count = None
else:
max_count = 500 * self.quality
total_bit_rate = 0.0
for index, frame in enumerate(mp3.array("frames/frame")):
if index < 3:
continue
bit_rate = frame.getBitRate()
if bit_rate:
total_bit_rate += float(bit_rate)
count += 1
if max_count and max_count <= count:
break
if not count:
return
bit_rate = total_bit_rate / count
self.bit_rate = (bit_rate,
_("%s (Variable bit rate)") % humanBitRate(bit_rate))
duration = timedelta(seconds=float(mp3["frames"].size) / bit_rate)
self.duration = duration
def extract(self, icon):
for index, header in enumerate(icon.array("icon_header")):
image = Metadata(self)
# Read size and colors from header
image.width = header["width"].value
image.height = header["height"].value
bpp = header["bpp"].value
nb_colors = header["nb_color"].value
if nb_colors != 0:
image.nb_colors = nb_colors
if bpp == 0 and nb_colors in self.color_to_bpp:
bpp = self.color_to_bpp[nb_colors]
elif bpp == 0:
bpp = 8
image.bits_per_pixel = bpp
image.setHeader(_("Icon #%u (%sx%s)")
% (1 + index,
image.get("width", "?"),
image.get("height", "?")))
# Read compression from data (if available)
key = "icon_data[%u]/header/codec" % index
if key in icon:
image.compression = icon[key].display
key = "icon_data[%u]/pixels" % index
if key in icon:
computeComprRate(image, icon[key].size)
# Store new image
self.addGroup("image[%u]" % index, image)
def computeVariableBitrate(self, mp3):
if self.quality <= QUALITY_FAST:
return
count = 0
if QUALITY_BEST <= self.quality:
self.warning(
"Process all MPEG audio frames to compute exact duration")
max_count = None
else:
max_count = 500 * self.quality
total_bit_rate = 0.0
for index, frame in enumerate(mp3.array("frames/frame")):
if index < 3:
continue
bit_rate = frame.getBitRate()
if bit_rate:
total_bit_rate += float(bit_rate)
count += 1
if max_count and max_count <= count:
break
if not count:
return
bit_rate = total_bit_rate / count
self.bit_rate = (bit_rate,
_("%s (Variable bit rate)") % humanBitRate(bit_rate))
duration = timedelta(seconds=float(mp3["frames"].size) / bit_rate)
self.duration = duration
def computeBitrate(self, frame):
bit_rate = frame.getBitRate() # may returns None on error
if not bit_rate:
return
self.bit_rate = (bit_rate, _("%s (constant)") % humanBitRate(bit_rate))
self.duration = timedelta(seconds=float(frame["/frames"].size) /
bit_rate)
def extractAVI(self, headers, **kwargs):
audio_index = 1
for stream in headers.array("stream"):
if "stream_hdr/stream_type" not in stream:
continue
stream_type = stream["stream_hdr/stream_type"].value
if stream_type == "vids":
if "stream_hdr" in stream:
meta = Metadata(self)
self.extractAVIVideo(stream["stream_hdr"], meta)
self.addGroup("video", meta, "Video stream")
elif stream_type == "auds":
if "stream_fmt" in stream:
meta = Metadata(self)
self.extractAVIAudio(stream["stream_fmt"], meta)
self.addGroup("audio[%u]" % audio_index, meta, "Audio stream")
audio_index += 1
if "avi_hdr" in headers:
self.useAviHeader(headers["avi_hdr"])
# Compute global bit rate
if self.has("duration") and "/movie/size" in headers:
self.bit_rate = float(
headers["/movie/size"].value) * 8 / timedelta2seconds(self.get('duration'))
# Video has index?
scan_index = (True, kwargs['scan_index'])['scan_index' in kwargs]
if scan_index and "/index" in headers:
self.comment = _("Has audio/video index (%s)") \
% humanFilesize(headers["/index"].size // 8)
def _getValue(self):
try:
value = self.createValue()
except Exception as err:
self.error(_("Unable to create value: %s") % unicode(err))
value = None
self._getValue = lambda: value
return value
def displayStat(self, stat):
"""
Display statistics to stdout:
- best time (minimum)
- average time (arithmetic average)
- worst time (maximum)
- total time (sum)
Use arithmetic avertage instead of geometric average because
geometric fails if any value is zero (returns zero) and also
because floating point multiplication lose precision with many
values.
"""
average = stat.getSum() / len(stat)
values = (stat.getMin(), average, stat.getMax(), stat.getSum())
values = tuple(self.formatTime(value) for value in values)
print _("Benchmark: best=%s average=%s worst=%s total=%s") % values
def _getValue(self):
try:
value = self.createValue()
except Exception as err:
self.error(_("Unable to create value: %s") % unicode(err))
value = None
self._getValue = lambda: value
return value
def displayStat(self, stat):
"""
Display statistics to stdout:
- best time (minimum)
- average time (arithmetic average)
- worst time (maximum)
- total time (sum)
Use arithmetic avertage instead of geometric average because
geometric fails if any value is zero (returns zero) and also
because floating point multiplication lose precision with many
values.
"""
average = stat.getSum() / len(stat)
values = (stat.getMin(), average, stat.getMax(), stat.getSum())
values = tuple(self.formatTime(value) for value in values)
print _("Benchmark: best=%s average=%s worst=%s total=%s") % values
def append(self, key, value):
"""
Append new value
"""
if key in self._index:
raise UniqKeyError(_("Key '%s' already exists") % key)
self._index[key] = len(self._value_list)
self._key_list.append(key)
self._value_list.append(value)
def __setattr__(self, key, value):
"""
Add a new value to data with name 'key'. Skip duplicates.
"""
# Invalid key?
if key not in self.__data:
raise KeyError(
_("%s has no metadata '%s'") % (self.__class__.__name__, key))
# Skip duplicates
self.__data[key].add(value)
def __setattr__(self, key, value):
"""
Add a new value to data with name 'key'. Skip duplicates.
"""
# Invalid key?
if key not in self.__data:
raise KeyError(_("%s has no metadata '%s'") %
(self.__class__.__name__, key))
# Skip duplicates
self.__data[key].add(value)
def extract(self, pcx):
self.width = 1 + pcx["xmax"].value
self.height = 1 + pcx["ymax"].value
self.width_dpi = pcx["horiz_dpi"].value
self.height_dpi = pcx["vert_dpi"].value
self.bits_per_pixel = pcx["bpp"].value
if 1 <= pcx["bpp"].value <= 8:
self.nb_colors = 2 ** pcx["bpp"].value
self.compression = _("Run-length encoding (RLE)")
self.format_version = "PCX: %s" % pcx["version"].display
if "image_data" in pcx:
computeComprRate(self, pcx["image_data"].size)
def getHachoirOptions(parser):
"""
Create an option group (type optparse.OptionGroup) of Hachoir
library options.
"""
def setLogFilename(*args):
log.setFilename(args[2])
common = OptionGroup(parser, _("Hachoir library"),
"Configure Hachoir library")
common.add_option("--verbose", help=_("Verbose mode"),
default=False, action="store_true")
common.add_option("--log", help=_("Write log in a file"),
type="string", action="callback",
callback=setLogFilename)
common.add_option("--quiet", help=_("Quiet mode (don't display warning)"),
default=False, action="store_true")
common.add_option("--debug", help=_("Debug mode"),
default=False, action="store_true")
return common
def insert(self, index, key, value):
"""
Insert an item at specified position index.
>>> d=Dict( ((6, 'six'), (9, 'neuf'), (4, 'quatre')) )
>>> d.insert(1, '40', 'quarante')
>>> d
{6: 'six', '40': 'quarante', 9: 'neuf', 4: 'quatre'}
"""
if key in self:
raise UniqKeyError(_("Insert error: key '%s' ready exists") % key)
_index = index
if index < 0:
index += len(self._value_list)
if not (0 <= index <= len(self._value_list)):
raise IndexError(_("Insert error: index '%s' is invalid") % _index)
for item_key, item_index in self._index.iteritems():
if item_index >= index:
self._index[item_key] += 1
self._index[key] = index
self._key_list.insert(index, key)
self._value_list.insert(index, value)
def humanFilesize(size):
"""
Convert a file size in byte to human natural representation.
It uses the values: 1 KB is 1024 bytes, 1 MB is 1024 KB, etc.
The result is an unicode string.
>>> humanFilesize(1)
u'1 byte'
>>> humanFilesize(790)
u'790 bytes'
>>> humanFilesize(256960)
u'250.9 KB'
"""
if size < 10000:
return ngettext("%u byte", "%u bytes", size) % size
units = [_("KB"), _("MB"), _("GB"), _("TB")]
size = float(size)
divisor = 1024
for unit in units:
size = size / divisor
if size < divisor:
return "%.1f %s" % (size, unit)
return "%u %s" % (size, unit)
def humanFilesize(size):
"""
Convert a file size in byte to human natural representation.
It uses the values: 1 KB is 1024 bytes, 1 MB is 1024 KB, etc.
The result is an unicode string.
>>> humanFilesize(1)
u'1 byte'
>>> humanFilesize(790)
u'790 bytes'
>>> humanFilesize(256960)
u'250.9 KB'
"""
if size < 10000:
return ngettext("%u byte", "%u bytes", size) % size
units = [_("KB"), _("MB"), _("GB"), _("TB")]
size = float(size)
divisor = 1024
for unit in units:
size = size / divisor
if size < divisor:
return "%.1f %s" % (size, unit)
return "%u %s" % (size, unit)
def timestampMac32(value):
"""
Convert an Mac (32-bit) timestamp to string. The format is the number
of seconds since the 1st January 1904 (to 2040). Returns unicode string.
>>> timestampMac32(0)
datetime.datetime(1904, 1, 1, 0, 0)
>>> timestampMac32(2843043290)
datetime.datetime(1994, 2, 2, 14, 14, 50)
"""
if not isinstance(value, (float, int, long)):
raise TypeError("an integer or float is required")
if not (0 <= value <= 4294967295):
return _("invalid Mac timestamp (%s)") % value
return MAC_TIMESTAMP_T0 + timedelta(seconds=value)
def timestampMac32(value):
"""
Convert an Mac (32-bit) timestamp to string. The format is the number
of seconds since the 1st January 1904 (to 2040). Returns unicode string.
>>> timestampMac32(0)
datetime.datetime(1904, 1, 1, 0, 0)
>>> timestampMac32(2843043290)
datetime.datetime(1994, 2, 2, 14, 14, 50)
"""
if not isinstance(value, (float, int, long)):
raise TypeError("an integer or float is required")
if not (0 <= value <= 4294967295):
return _("invalid Mac timestamp (%s)") % value
return MAC_TIMESTAMP_T0 + timedelta(seconds=value)
def timestampWin64(value):
"""
Convert Windows 64-bit timestamp to string. The timestamp format is
a 64-bit number which represents number of 100ns since the
1st January 1601 at 00:00. Result is an unicode string.
See also durationWin64(). Maximum date is 28 may 60056.
>>> timestampWin64(0)
datetime.datetime(1601, 1, 1, 0, 0)
>>> timestampWin64(127840491566710000)
datetime.datetime(2006, 2, 10, 12, 45, 56, 671000)
"""
try:
return WIN64_TIMESTAMP_T0 + durationWin64(value)
except OverflowError:
raise ValueError(
_("date newer than year %s (value=%s)") % (MAXYEAR, value))
def timestampWin64(value):
"""
Convert Windows 64-bit timestamp to string. The timestamp format is
a 64-bit number which represents number of 100ns since the
1st January 1601 at 00:00. Result is an unicode string.
See also durationWin64(). Maximum date is 28 may 60056.
>>> timestampWin64(0)
datetime.datetime(1601, 1, 1, 0, 0)
>>> timestampWin64(127840491566710000)
datetime.datetime(2006, 2, 10, 12, 45, 56, 671000)
"""
try:
return WIN64_TIMESTAMP_T0 + durationWin64(value)
except OverflowError:
raise ValueError(_("date newer than year %s (value=%s)")
% (MAXYEAR, value))
def createDisplay(self, human=True):
if not human:
if self._raw_value is None:
self._raw_value = GenericString.createValue(self, False)
value = makePrintable(self._raw_value, "ASCII", to_unicode=True)
elif self._charset:
value = makePrintable(self.value, "ISO-8859-1", to_unicode=True)
else:
value = self.value
if config.max_string_length < len(value):
# Truncate string if needed
value = "%s(...)" % value[:config.max_string_length]
if not self._charset or not human:
return makePrintable(value, "ASCII", quote='"', to_unicode=True)
else:
if value:
return '"%s"' % value.replace('"', '\\"')
else:
return _("(empty)")
def timestampUUID60(value):
"""
Convert UUID 60-bit timestamp to string. The timestamp format is
a 60-bit number which represents number of 100ns since the
the 15 October 1582 at 00:00. Result is an unicode string.
>>> timestampUUID60(0)
datetime.datetime(1582, 10, 15, 0, 0)
>>> timestampUUID60(130435676263032368)
datetime.datetime(1996, 2, 14, 5, 13, 46, 303236)
"""
if not isinstance(value, (float, int, long)):
raise TypeError("an integer or float is required")
if value < 0:
raise ValueError("value have to be a positive or nul integer")
try:
return UUID60_TIMESTAMP_T0 + timedelta(microseconds=value / 10)
except OverflowError:
raise ValueError(_("timestampUUID60() overflow (value=%s)") % value)
def createDisplay(self, human=True):
if not human:
if self._raw_value is None:
self._raw_value = GenericString.createValue(self, False)
value = makePrintable(self._raw_value, "ASCII", to_unicode=True)
elif self._charset:
value = makePrintable(self.value, "ISO-8859-1", to_unicode=True)
else:
value = self.value
if config.max_string_length < len(value):
# Truncate string if needed
value = "%s(...)" % value[:config.max_string_length]
if not self._charset or not human:
return makePrintable(value, "ASCII", quote='"', to_unicode=True)
else:
if value:
return '"%s"' % value.replace('"', '\\"')
else:
return _("(empty)")
def __init__(self, input, size=None, **args):
if not hasattr(input, "seek"):
if size is None:
input = InputPipe(input, self._setSize)
else:
input = InputPipe(input)
elif size is None:
try:
input.seek(0, 2)
size = input.tell() * 8
except IOError, err:
if err.errno == ESPIPE:
input = InputPipe(input, self._setSize)
else:
charset = getTerminalCharset()
errmsg = unicode(str(err), charset)
source = args.get("source", "<inputio:%r>" % input)
raise InputStreamError(
_("Unable to get size of %s: %s") % (source, errmsg))
def FileInputStream(filename, real_filename=None, **args):
"""
Create an input stream of a file. filename must be unicode.
real_filename is an optional argument used to specify the real filename,
its type can be 'str' or 'unicode'. Use real_filename when you are
not able to convert filename to real unicode string (ie. you have to
use unicode(name, 'replace') or unicode(name, 'ignore')).
"""
# assert isinstance(filename, unicode)
if not real_filename:
real_filename = filename
try:
inputio = open(real_filename, 'rb')
except IOError, err:
charset = getTerminalCharset()
errmsg = unicode(str(err), charset)
raise InputStreamError(_(
"Unable to open file %s: %s") % (filename, errmsg))
def timestampUUID60(value):
"""
Convert UUID 60-bit timestamp to string. The timestamp format is
a 60-bit number which represents number of 100ns since the
the 15 October 1582 at 00:00. Result is an unicode string.
>>> timestampUUID60(0)
datetime.datetime(1582, 10, 15, 0, 0)
>>> timestampUUID60(130435676263032368)
datetime.datetime(1996, 2, 14, 5, 13, 46, 303236)
"""
if not isinstance(value, (float, int, long)):
raise TypeError("an integer or float is required")
if value < 0:
raise ValueError("value have to be a positive or nul integer")
try:
return UUID60_TIMESTAMP_T0 + timedelta(microseconds=value / 10)
except OverflowError:
raise ValueError(_("timestampUUID60() overflow (value=%s)") % value)
def _get(self, index):
if index >= len(self.buffers):
return ''
buf = self.buffers[index]
if buf is None:
raise InputStreamError(
_("Error: Buffers too small. Can't seek backward."))
if self.last != index:
next = buf[1]
prev = buf[2]
self.buffers[next][2] = prev
self.buffers[prev][1] = next
first = self.buffers[self.last][1]
buf[1] = first
buf[2] = self.last
self.buffers[first][2] = index
self.buffers[self.last][1] = index
self.last = index
return buf[0]
def computeQuality(self, jpeg):
# This function is an adaption to Python of ImageMagick code
# to compute JPEG quality using quantization tables
# Read quantization tables
qtlist = []
for dqt in jpeg.array("quantization"):
for qt in dqt.array("content/qt"):
# TODO: Take care of qt["index"].value?
qtlist.append(qt)
if not qtlist:
return
# Compute sum of all coefficients
sumcoeff = 0
for qt in qtlist:
coeff = qt.array("coeff")
for index in xrange(64):
sumcoeff += coeff[index].value
# Choose the right quality table and compute hash value
try:
hashval = qtlist[0]["coeff[2]"].value + qtlist[0]["coeff[53]"].value
if 2 <= len(qtlist):
hashval += qtlist[1]["coeff[0]"].value + qtlist[1]["coeff[63]"].value
hashtable = QUALITY_HASH_COLOR
sumtable = QUALITY_SUM_COLOR
else:
hashtable = QUALITY_HASH_GRAY
sumtable = QUALITY_SUM_GRAY
except (MissingField, IndexError):
# A coefficient is missing, so don't compute JPEG quality
return
# Find the JPEG quality
for index in xrange(100):
if (hashval >= hashtable[index]) or (sumcoeff >= sumtable[index]):
quality = "%s%%" % (index + 1)
if (hashval > hashtable[index]) or (sumcoeff > sumtable[index]):
quality += " " + _("(approximate)")
self.comment = "JPEG quality: %s" % quality
return
def doparse(self, stream, fallback=True):
fb = None
warn = warning
for parser in self.parsers:
try:
parser_obj = parser(stream, validate=self.validate)
if self.parser_args:
for key, value in self.parser_args.iteritems():
setattr(parser_obj, key, value)
return parser_obj
except ValidateError as err:
if fallback and self.fallback:
fb = parser
if parser == self.other:
warn = info
warn("Skip parser '%s': %s" % (parser.__name__, err))
except Exception as err:
if parser == self.other:
warn = info
warn("Skip parser '%s': %s" % (parser.__name__, err))
fallback = False
if self.use_fallback and fb:
warning(_("Force use of parser '%s'") % fb.__name__)
return fb(stream)
from hachoir.core.i18n import _, ngettext
NB_CHANNEL_NAME = {1: _("mono"), 2: _("stereo")}
def humanAudioChannel(value):
return NB_CHANNEL_NAME.get(value, unicode(value))
def humanFrameRate(value):
if isinstance(value, (int, long, float)):
return _("%.1f fps") % value
else:
return value
def humanComprRate(rate):
return u"%.1fx" % rate
def humanAltitude(value):
return ngettext("%.1f meter", "%.1f meters", value) % value
def humanPixelSize(value):
return ngettext("%s pixel", "%s pixels", value) % value
def humanDPI(value):
return u"%s DPI" % value
def registerAllItems(meta):
meta.register(Data("title", 100, _("Title"), type=unicode))
meta.register(Data("artist", 101, _("Artist"), type=unicode))
meta.register(Data("author", 102, _("Author"), type=unicode))
meta.register(Data("music_composer", 103, _("Music composer"), type=unicode))
meta.register(Data("album", 200, _("Album"), type=unicode))
meta.register(Data("duration", 201, _("Duration"),
# integer in milliseconde
type=timedelta,
text_handler=humanDuration,
filter=DURATION_FILTER))
meta.register(Data("nb_page", 202, _("Nb page"),
filter=NumberFilter(1, MAX_NB_PAGE)))
meta.register(Data("music_genre", 203, _("Music genre"),
type=unicode))
meta.register(Data("language", 204, _("Language"),
conversion=setLanguage,
type=Language))
meta.register(Data("track_number", 205, _("Track number"),
conversion=setTrackNumber,
filter=NumberFilter(1, MAX_TRACK),
type=(int, long)))
meta.register(Data("track_total", 206, _("Track total"),
conversion=setTrackTotal,
filter=NumberFilter(1, MAX_TRACK),
type=(int, long)))
meta.register(Data("organization", 210, _("Organization"),
type=unicode))
meta.register(Data("version", 220, _("Version")))
meta.register(Data("width", 301, _("Image width"),
filter=NumberFilter(1, MAX_WIDTH),
type=(int, long),
text_handler=humanPixelSize))
meta.register(Data("height", 302, _("Image height"),
filter=NumberFilter(1, MAX_HEIGHT),
type=(int, long),
text_handler=humanPixelSize))
meta.register(Data("nb_channel", 303, _("Channel"),
text_handler=humanAudioChannel,
filter=NumberFilter(1, MAX_NB_CHANNEL),
type=(int, long)))
meta.register(Data("sample_rate", 304, _("Sample rate"),
text_handler=humanFrequency,
filter=NumberFilter(MIN_SAMPLE_RATE, MAX_SAMPLE_RATE),
type=(int, long, float)))
meta.register(Data("bits_per_sample", 305, _("Bits/sample"),
text_handler=humanBitSize,
filter=NumberFilter(1, 64),
type=(int, long)))
meta.register(Data("image_orientation", 306, _("Image orientation")))
meta.register(Data("nb_colors", 307, _("Number of colors"), filter=NumberFilter(1, MAX_NB_COLOR), type=(int, long)))
meta.register(Data("bits_per_pixel", 308, _("Bits/pixel"), filter=NumberFilter(1, MAX_BITS_PER_PIXEL), type=(int, long)))
meta.register(Data("filename", 309, _("File name"), type=unicode))
meta.register(Data("file_size", 310, _("File size"),
text_handler=humanFilesize, type=(int, long)))
meta.register(Data("pixel_format", 311, _("Pixel format")))
meta.register(Data("compr_size", 312, _("Compressed file size"),
text_handler=humanFilesize, type=(int, long)))
meta.register(Data("compr_rate", 313, _("Compression rate"),
text_handler=humanComprRate,
filter=NumberFilter(MIN_COMPR_RATE, MAX_COMPR_RATE), type=(int, long, float)))
meta.register(Data("width_dpi", 320, _("Image DPI width"),
filter=NumberFilter(1, MAX_DPI_WIDTH),
type=(int, long),
text_handler=humanDPI))
meta.register(Data("height_dpi", 321, _("Image DPI height"),
filter=NumberFilter(1, MAX_DPI_HEIGHT),
type=(int, long),
text_handler=humanDPI))
meta.register(Data("file_attr", 400, _("File attributes")))
meta.register(Data("file_type", 401, _("File type")))
meta.register(Data("subtitle_author", 402, _("Subtitle author"), type=unicode))
meta.register(Data("creation_date", 500, _("Creation date"),
text_handler=humanDatetime,
filter=DATETIME_FILTER,
type=(datetime, date),
conversion=setDatetime))
meta.register(Data("last_modification", 501, _("Last modification"),
text_handler=humanDatetime,
filter=DATETIME_FILTER,
type=(datetime, date),
conversion=setDatetime))
meta.register(Data("latitude", 510, _("Latitude"), type=float))
meta.register(Data("longitude", 511, _("Longitude"), type=float))
meta.register(Data("altitude", 512, _("Altitude"), type=float,
text_handler=humanAltitude))
meta.register(Data("location", 530, _("Location"), type=unicode))
meta.register(Data("city", 531, _("City"), type=unicode))
meta.register(Data("country", 532, _("Country"), type=unicode))
meta.register(Data("charset", 540, _("Charset"), type=unicode))
meta.register(Data("font_weight", 550, _("Font weight")))
meta.register(Data("camera_aperture", 520, _("Camera aperture")))
meta.register(Data("camera_focal", 521, _("Camera focal")))
meta.register(Data("camera_exposure", 522, _("Camera exposure")))
meta.register(Data("camera_brightness", 530, _("Camera brightness")))
meta.register(Data("camera_model", 531, _("Camera model"), type=unicode))
meta.register(Data("camera_manufacturer", 532, _("Camera manufacturer"),
type=unicode))
meta.register(Data("compression", 600, _("Compression")))
meta.register(Data("copyright", 601, _("Copyright"), type=unicode))
meta.register(Data("url", 602, _("URL"), type=unicode))
meta.register(Data("frame_rate", 603, _("Frame rate"),
text_handler=humanFrameRate,
filter=NumberFilter(1, MAX_FRAME_RATE),
type=(int, long, float)))
meta.register(Data("bit_rate", 604, _("Bit rate"),
text_handler=humanBitRate,
filter=NumberFilter(1, MAX_BIT_RATE),
type=(int, long, float)))
meta.register(Data("aspect_ratio", 604, _("Aspect ratio"),
type=(int, long, float)))
meta.register(Data("thumbnail_size", 604, _("Thumbnail size"),
text_handler=humanFilesize, type=(int, long, float)))
meta.register(Data("iso_speed_ratings", 800, _("ISO speed rating")))
meta.register(Data("exif_version", 801, _("EXIF version")))
meta.register(Data("date_time_original", 802, _("Date-time original"),
text_handler=humanDatetime,
filter=DATETIME_FILTER,
type=(datetime, date), conversion=setDatetime))
meta.register(Data("date_time_digitized", 803, _("Date-time digitized"),
text_handler=humanDatetime,
filter=DATETIME_FILTER,
type=(datetime, date), conversion=setDatetime))
meta.register(Data("compressed_bits_per_pixel", 804, _("Compressed bits per pixel"), type=(int, long, float)))
meta.register(Data("shutter_speed_value", 805, _("Shutter speed"), type=(int, long, float)))
meta.register(Data("aperture_value", 806, _("Aperture")))
meta.register(Data("exposure_bias_value", 807, _("Exposure bias")))
meta.register(Data("focal_length", 808, _("Focal length")))
meta.register(Data("flashpix_version", 809, _("Flashpix version")))
meta.register(Data("focal_plane_x_resolution", 810, _("Focal plane width")))
meta.register(Data("focal_plane_y_resolution", 811, _("Focal plane height"), type=float))
meta.register(Data("focal_length_in_35mm_film", 812, _("Focal length in 35mm film")))
meta.register(Data("os", 900, _("OS"), type=unicode))
meta.register(Data("producer", 901, _("Producer"), type=unicode))
meta.register(Data("comment", 902, _("Comment"), type=unicode))
meta.register(Data("format_version", 950, _("Format version"), type=unicode))
meta.register(Data("mime_type", 951, _("MIME type"), type=unicode))
meta.register(Data("endian", 952, _("Endianness"), type=unicode))
def processMovieHeader(self, hdr):
self.creation_date = hdr["creation_date"].value
self.last_modification = hdr["lastmod_date"].value
self.duration = timedelta(seconds=float(hdr["duration"].value) / hdr["time_scale"].value)
self.comment = _("Play speed: %.1f%%") % (hdr["play_speed"].value * 100)
self.comment = _("User volume: %.1f%%") % (float(hdr["volume"].value) * 100)
def humanFrameRate(value):
if isinstance(value, (int, long, float)):
return _("%.1f fps") % value
else:
return value
def _run(self, func, args, kw):
"""
Call func(*args, **kw) as many times as needed to get
good statistics. Algorithm:
- call the function once
- compute needed number of calls
- and then call function N times
To compute number of calls, parameters are:
- time of first function call
- minimum number of calls (min_count attribute)
- maximum test time (max_time attribute)
Notice: The function will approximate number of calls.
"""
# First call of the benchmark
stat = BenchmarkStat()
diff = self._runOnce(func, args, kw)
best = diff
stat.append(diff)
total_time = diff
# Compute needed number of calls
count = int(floor(self.max_time / diff))
count = max(count, self.min_count)
if self.max_count:
count = min(count, self.max_count)
# Not other call? Just exit
if count == 1:
return stat
estimate = diff * count
if self.verbose:
print _("Run benchmark: %s calls (estimate: %s)") \
% (count, self.formatTime(estimate))
display_progress = self.verbose and (1.0 <= estimate)
total_count = 1
while total_count < count:
# Run benchmark and display each result
if display_progress:
print _("Result %s/%s: %s (best: %s)") % \
(total_count, count,
self.formatTime(diff), self.formatTime(best))
part = count - total_count
# Will takes more than one second?
average = total_time / total_count
if self.progress_time < part * average:
part = max(int(self.progress_time / average), 1)
for index in xrange(part):
diff = self._runOnce(func, args, kw)
stat.append(diff)
total_time += diff
best = min(diff, best)
total_count += part
if display_progress:
print _("Result %s/%s: %s (best: %s)") % \
(count, count,
self.formatTime(diff), self.formatTime(best))
return stat
