def encode(cls, fp):
"""Compress and base64-encode a raw fingerprint"""
# TODO: error handling
efp_obj_ptr = ffi.new('char **')
fp_obj = ffi.new('int32_t[]', fp)
assert lib.groove_fingerprinter_encode(fp_obj, len(fp), efp_obj_ptr) == 0
# copy the result to python and free the c obj
result = ffi.string(efp_obj_ptr[0])
lib.groove_fingerprinter_dealloc(efp_obj_ptr[0])
return result
def get_tags(self, flags=0):
"""Get the tags for an encoder
Args:
flags (int) Bitmask of tag flags
Returns:
A dictionary of `name: value` pairs. Both `name` and `value` will
be type `bytes`.
"""
# Have to make a GrooveTag** so cffi doesn't try to sizeof GrooveTag
gtag_ptr = ffi.new('struct GrooveTag **')
gtag = gtag_ptr[0]
tags = OrderedDict()
while True:
gtag = lib.groove_encoder_metadata_get(self._obj, b'', gtag, flags)
if gtag == ffi.NULL:
break
key = ffi.string(lib.groove_tag_key(gtag))
value = ffi.string(lib.groove_tag_value(gtag))
tags[key] = value
return tags
def get_tags(self, flags=0):
"""Get the tags for an encoder
Args:
flags (int) Bitmask of tag flags
Returns:
A dictionary of `name: value` pairs. Both `name` and `value` will
be type `bytes`.
"""
# Have to make a GrooveTag** so cffi doesn't try to sizeof GrooveTag
gtag_ptr = ffi.new('struct GrooveTag **')
gtag = gtag_ptr[0]
tags = OrderedDict()
while True:
gtag = lib.groove_encoder_metadata_get(self._obj, b'', gtag, flags)
if gtag == ffi.NULL:
break
key = ffi.string(lib.groove_tag_key(gtag))
value = ffi.string(lib.groove_tag_value(gtag))
tags[key] = value
return tags
def list_devices(cls):
"""Get the list of available devices
This may trigger a complete redetect of available hardware
"""
devices = [
Player.dummy_device,
Player.default_device,
]
device_count = lib.groove_device_count()
for n in range(device_count):
name = lib.groove_device_name(n)
if name == ffi.NULL:
continue
name = ffi.string(name).decode('utf-8')
devices.append(Device(n, name))
return devices
def __iter__(self):
info_obj = ffi.new('struct GrooveFingerprinterInfo *');
while True:
status = lib.groove_fingerprinter_info_get(self._obj, info_obj, True)
assert status >= 0
if status != 1 or info_obj.item == ffi.NULL:
break
fp_obj = info_obj.fingerprint
fp_size_obj = info_obj.fingerprint_size
if self.base64_encode:
efp_obj_ptr = ffi.new('char **')
assert lib.groove_fingerprinter_encode(fp_obj, fp_size_obj, efp_obj_ptr) == 0
fp = ffi.string(efp_obj_ptr[0])
lib.groove_fingerprinter_dealloc(efp_obj_ptr[0])
else:
fp = [int(fp_obj[n]) for n in range(fp_size_obj)]
duration = float(info_obj.duration)
pitem = self.playlist._pitem(info_obj.item)
lib.groove_fingerprinter_free_info(info_obj)
yield FingerprinterInfo(fp, duration, pitem)
def _from_obj(cls, obj):
instance, created = super(File, cls)._from_obj(obj)
if created:
instance._filename = ffi.string(instance._obj.filename).decode()
return instance, created
def short_names(self):
"""A list of short names for the format"""
names = ffi.string(lib.groove_file_short_names(self._obj)).decode()
return names.split(',')
def libgroove_version():
"""libgroove version as a string"""
return ffi.string(lib.groove_version()).decode('utf-8')
def getter(self):
value = getattr(self._obj, attr)
if value == ffi.NULL:
return None
return ffi.string(value).decode(encoding)
def _from_obj(cls, obj):
instance, created = super(File, cls)._from_obj(obj)
if created:
instance._filename = ffi.string(instance._obj.filename).decode()
return instance, created
def short_names(self):
"""A list of short names for the format"""
names = ffi.string(lib.groove_file_short_names(self._obj)).decode()
return names.split(',')
def libgroove_version():
"""libgroove version as a string"""
return ffi.string(lib.groove_version()).decode('utf-8')
