Frame.cpp

#include "Frame.h"


Frame::Frame(void)
{
  rb=0; mem=0; len=alen=glen=0;
}

Frame::~Frame()
{
  free(mem);
}

unsigned char *Frame::GetBuff(int l)
{
  if(!mem || l>alen) {
    free(mem); mem=0; alen=0;
    mem=MALLOC(unsigned char,l+LEN_OFF);
    if(mem) alen=l;
    }
  len=l;
  if(!mem) {
	isyslog("DVBAPI: ci-frame alloc failed");
    return 0;
    }
  return mem+LEN_OFF;
}

void Frame::Put(void)
{
  if(rb && mem) {
    *((short *)mem)=len;
    rb->Put(mem,len+LEN_OFF);
    }
}

unsigned char *Frame::Get(int &l)
{
  if(rb) {
    int c;
    unsigned char *data=rb->Get(c);
    if(data) {
      if(c>LEN_OFF) {
        int s=*((short *)data);
        if(c>=s+LEN_OFF) {
          l=glen=s;
          return data+LEN_OFF;
          }
        }
//      LDUMP(L_GEN_DEBUG,data,c,"internal: ci rb frame sync got=%d avail=%d -",c,rb->Available());
      rb->Clear();
      }
    }
  return 0;
}

int Frame::Avail(void)
{
  return rb ? rb->Available() : 0;
}

void Frame::Del(void)
{
  if(rb && glen) {
    rb->Del(glen+LEN_OFF);
    glen=0;
    }
}