def _fingerprint_buffer(buf):
"""
Generate a fingerprint from a media file loaded in memory as a byte
buffer.
:param bytes buf: A byte buffer holding a media file.
:raise: :class:`AEError` if the buffer holds invalid data.
:rtype: Fingerprint
"""
lk = _AE_Lock.new(_lib)
c_status = _AE_Status.new(_lib)
c_buf = _AE_Buffer.new(_lib)
c_ft = _AE_Buffer.new(_lib)
_lib.AE_Buffer_Set(c_buf.get(), buf, len(buf))
_lib.AE_Fingerprint_Buffer(c_buf.get(), c_ft.get(), c_status.get())
AEError.check_status(c_status)
data = _lib.AE_Buffer_GetData(c_ft.get())
size = _lib.AE_Buffer_GetSize(c_ft.get())
ft = ctypes.string_at(data, size)
return Fingerprint(ft)
def _start_metadata_search(client, req):
"""
Starts a metadata search. This operation does not block until the
search is finished, it does however perform a network operation to
initiate the search on the backend service.
:param MetadataSearchRequest req: search parameters.
:raise: :class:`AEError` if the search couldn’t be initiated, e.g.
because of network issues.
:rtype: MetadataSearchFuture
"""
lock = _AE_Lock.new(_lib)
c_status = _AE_Status.new(_lib)
c_ft = _AE_Buffer.new(_lib)
c_req = _AE_MetadataSearchRequest.new(_lib)
c_lookup_id = ctypes.c_uint64(0)
_lib.AE_Buffer_Set(c_ft.get(), req.fingerprint._ft,
len(req.fingerprint._ft))
_lib.AE_MetadataSearchRequest_SetFingerprint(c_req.get(), c_ft.get(),
c_status.get())
AEError.check_status(c_status)
_lib.AE_MetadataSearch_Start(client._c_client.get(), c_req.get(),
ctypes.byref(c_lookup_id), c_status.get())
AEError.check_status(c_status)
return MetadataSearchFuture(client, c_lookup_id.value)
def _fingerprint_file(path):
"""
Generate a fingerprint from a file stored on a disk. The parameter to
the function must be a path to a valid file in supported format.
:param str path: path to the media file we're trying to fingerprint.
:raise: :class:`AEError` if the media file is missing or invalid.
:rtype: Fingerprint
"""
lk = _AE_Lock.new(_lib)
c_ft = _AE_Buffer.new(_lib)
c_status = _AE_Status.new(_lib)
_lib.AE_Fingerprint_File(path.encode(), c_ft.get(), c_status.get())
AEError.check_status(c_status)
data = _lib.AE_Buffer_GetData(c_ft.get())
size = _lib.AE_Buffer_GetSize(c_ft.get())
ft = ctypes.string_at(data, size)
return Fingerprint(ft)
def get(self):
"""
Blocks until the search result is ready and then returns it.
:raise: :class:`AEError` if the search couldn't be performed, e.g.
because of network issues.
:rtype: LicenseSearchResult
"""
lock = _AE_Lock.new(_lib)
c_status = _AE_Status.new(_lib)
c_res = _AE_LicenseSearchResult.new(_lib)
_lib.AE_LicenseSearch_Check(self._raw_c_client, self._lookup_id,
c_res.get(), c_status.get())
AEError.check_status(c_status)
c_match = _AE_LicenseSearchMatch.new(_lib)
c_matches_pos = ctypes.c_int(0)
c_asset = _AE_Asset.new(_lib)
matches = []
while _lib.AE_LicenseSearchResult_NextMatch(
c_res.get(), c_match.get(), ctypes.byref(c_matches_pos)):
_lib.AE_LicenseSearchMatch_GetAsset(c_match.get(), c_asset.get())
matches.append(LicenseSearchMatch(
asset=_extract_asset(c_asset),
segments=_extract_license_search_segments(c_match),
policies=_extract_license_search_policies(c_match)))
return LicenseSearchResult(
lookup_id=_lib.AE_LicenseSearchResult_GetLookupID(c_res.get()),
ugc_id=_lib.AE_LicenseSearchResult_GetUGCID(c_res.get()),
matches=matches)