[Commit-gnuradio] r5830 - gnuradio/branches/developers/gnychis/inband/usrp/host/lib/inband

[gnychis]

Author: gnychis
Date: 2007-06-25 14:02:29 -0600 (Mon, 25 Jun 2007)
New Revision: 5830

Modified:
   
gnuradio/branches/developers/gnychis/inband/usrp/host/lib/inband/usrp_server.cc
Log:
CS code work-in-progress


Modified: 
gnuradio/branches/developers/gnychis/inband/usrp/host/lib/inband/usrp_server.cc
===================================================================
--- 
gnuradio/branches/developers/gnychis/inband/usrp/host/lib/inband/usrp_server.cc 
    2007-06-25 18:58:43 UTC (rev 5829)
+++ 
gnuradio/branches/developers/gnychis/inband/usrp/host/lib/inband/usrp_server.cc 
    2007-06-25 20:02:29 UTC (rev 5830)
@@ -682,6 +682,39 @@
 void usrp_server::handle_cmd_to_control_channel(mb_port_sptr port, 
std::vector<struct channel_info> &chan_info, pmt_t data) 
 {
 
+  pmt_t invocation_handle = pmt_nth(0, data);
+  pmt_t subpackets = pmt_nth(1, data);
+
+  long n_subpackets = pmt_length(subpackets);
+
+  size_t psize;
+  long payload = 0;
+
+  pmt_t v_packets;
+  transport_pkt *pkt;
+
+  // The design of the following code is optimized for simplicity, not
+  // performance.  To performance optimize this code, the total size in bytes
+  // needed for all of the CS packets is needed to allocate contiguous memory
+  // which contains the USB packets for bursting over the bus.  However to do
+  // this the packets subpackets would need to be parsed twice and their sizes
+  // would need to be determined.
+  //
+  // The approach taken is to keep parsing the subpackets and putting them in 
to
+  // USB packets.  Once the USB packet is full, a write is sent for it and
+  // another packet is created.
+
+  for(int i=0; i < n_subpackets; i++) {
+
+    // We create a new packet when the payload is set to 0
+    if(payload == 0) {
+      v_packets = pmt_make_u8vector(sizeof(transport_pkt), 0);
+
+      pkt = (transport_pkt *) pmt_u8vector_writeable_elements(v_packets, 
psize);
+    }
+
+  }
+
   return;
 }