def __init__(self, filename, grey=False):
self.m = ffi.new("struct mjpg *")
self.fcnt = 0
if grey:
r = lib.mjpg_open(self.m, filename, lib.IMTYPE_GRAY, lib.IMORDER_PLANAR)
self.channels = 1
else:
r = lib.mjpg_open(self.m, filename, lib.IMTYPE_RGB, lib.IMORDER_INTERLEAVED)
self.channels = 3
if r != lib.OK:
raise IOError("Failed to open: " + filename)
def __init__(self, filename, grey=False):
self.m = ffi.new("struct mjpg *")
self.fcnt = 0
if grey:
r = lib.mjpg_open(self.m, filename, lib.IMTYPE_GRAY,
lib.IMORDER_INTERLEAVED)
self.channels = 1
else:
r = lib.mjpg_open(self.m, filename, lib.IMTYPE_RGB,
lib.IMORDER_INTERLEAVED)
self.channels = 3
if r != lib.OK:
raise IOError("Failed to open: " + filename)
def jpg_info(filename):
"""
Reads a single jpeg image from the file *filename* and extracts the Axis user data header.
The information it contains is returned as a dict with the keys "hwid", "serial_numer" and
"firmware_version".
"""
if sys.version_info > (3, ):
filename = bytes(filename, "utf8")
m = ffi.new("struct mjpg *")
r = lib.mjpg_open(m, filename, lib.IMTYPE_GRAY, lib.IMORDER_PLANAR)
lib.mjpg_next_head(m)
res = {
'hwid': ffi.string(m.hwid),
'serial_number': ffi.string(m.serial),
'firmware_version': ffi.string(m.firmware),
'timestamp': m.timestamp_sec + m.timestamp_usec / 1000000.0
}
lib.mjpg_close(m)
return res