//Read a list contents request header:
// first item to send, 4-byte network integer
// last item+1 to send, 4-byte network integer
// extra data length, 4-byte network integer
// extra data, list-defined bytes
// list path length, 4-byte network integer (character count)
// list path name, null-terminated ASCII
static CpdListAccessor *CpdListHeader_ccs_list_items(char *msg,
CpdListItemsRequest &h)
{
int msgLen=CmiSize((void *)msg)-CmiReservedHeaderSize;
CpdListAccessor *ret=NULL;
const ChMessageInt_t *req=(const ChMessageInt_t *)(msg+CmiReservedHeaderSize);
h.lo=ChMessageInt(req[0]); // first item to send
h.hi=ChMessageInt(req[1]); // last item to send+1
h.extraLen=ChMessageInt(req[2]); // extra data length
if (h.extraLen>=0
&& ((int)(3*sizeof(ChMessageInt_t)+h.extraLen))<msgLen) {
h.extra=(void *)(req+3); // extra data
ret=CpdListLookup((ChMessageInt_t *)(h.extraLen+(char *)h.extra));
if (ret!=NULL) CpdListBoundsCheck(ret,h.lo,h.hi);
}
return ret;
}
/*
CCS handler "lvImage", taking a liveVizRequest, returning binary image data.
A client requests an image from us.
*/
extern "C" void getImageHandler(char * msg)
{
int msgLen=CmiSize(msg);
char *buf=(char *)(msg+CmiMsgHeaderSizeBytes); msgLen-=CmiMsgHeaderSizeBytes;
liveVizRequest o;
PUP_toNetwork_unpack up(buf);
o.pupNetwork(up);
buf+=up.size(); msgLen-=up.size();
int wid=o.wid,ht=o.ht;
if (config.getVerbose(2))
CmiPrintf("CCS getImage> Request for (%d x %d) or (0x%x x 0x%x) pixel image.\n",
wid,ht,wid,ht);
if (msgLen<0) {
CmiError("liveViz0 getImageHandler Rejecting too-short image request\n");
return;
}
o.replyToken = CcsDelayReply();
liveViz0Get(o,buf,msgLen);
CmiFree(msg); //Throw away the client's request
}
