diff options
| -rw-r--r-- | gr-digital/python/grc_gnuradio/blks2/packet.py | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/gr-digital/python/grc_gnuradio/blks2/packet.py b/gr-digital/python/grc_gnuradio/blks2/packet.py index dc06544c19..298453a104 100644 --- a/gr-digital/python/grc_gnuradio/blks2/packet.py +++ b/gr-digital/python/grc_gnuradio/blks2/packet.py @@ -54,13 +54,21 @@ class _packet_encoder_thread(_threading.Thread): self.start() def run(self): - sample = '' #residual sample while self.keep_running: + sample = '' # residual sample msg = self._msgq.delete_head() #blocking read of message queue sample = sample + msg.to_string() #get the body of the msg as a string + while len(sample) >= self._payload_length: payload = sample[:self._payload_length] sample = sample[self._payload_length:] + + #check if sample has remaining data to transmit that is shorter than the payload length + if len(sample) > 0 and len(sample) < self._payload_length: + #arbitrary padding to satisfy send on next loop for payload less than _payload_length + padding = ('x' * (self._payload_length - len(sample))) + sample = sample + padding + self._send(payload) class packet_encoder(gr.hier_block2): @@ -107,6 +115,7 @@ class packet_encoder(gr.hier_block2): #connect self.connect(msg_source, self) + print "Warning: the blks2.packet_encoder block is deprecated." def send_pkt(self, payload): @@ -197,9 +206,10 @@ class packet_mod_base(gr.hier_block2): """ def __init__(self, packet_source=None, payload_length=0): + if not payload_length: #get payload length payload_length = DEFAULT_PAYLOAD_LEN - if payload_length%self._item_size_in != 0: #verify that packet length is a multiple of the stream size + if (payload_length % self._item_size_in) != 0: #verify that packet length is a multiple of the stream size raise ValueError, 'The payload length: "%d" is not a mutiple of the stream size: "%d".'%(payload_length, self._item_size_in) #initialize hier2 gr.hier_block2.__init__( |