Function cs_Create

src/MatroskaParser.c:3195–3239

};

CompressedStream  *cs_Create(/* in */	MatroskaFile *mf,
			     /* in */	unsigned tracknum,
			     /* out */	char *errormsg,
			     /* in */	unsigned msgsize)
{
  CompressedStream  *cs;
  TrackInfo	    *ti;
  int		    code;

  ti = mkv_GetTrackInfo(mf, tracknum);
  if (ti == NULL) {
    mystrlcpy(errormsg, "No such track.", msgsize);
    return NULL;
  }

  if (!ti->CompEnabled) {
    mystrlcpy(errormsg, "Track is not compressed.", msgsize);
    return NULL;
  }

  if (ti->CompMethod != COMP_ZLIB) {
    mystrlcpy(errormsg, "Unsupported compression method.", msgsize);
    return NULL;
  }

  cs = mf->cache->memalloc(mf->cache,sizeof(*cs));
  if (cs == NULL) {
    mystrlcpy(errormsg, "Ouf of memory.", msgsize);
    return NULL;
  }

  memset(&cs->zs,0,sizeof(cs->zs));
  code = inflateInit(&cs->zs);
  if (code != Z_OK) {
    mystrlcpy(errormsg, "ZLib error.", msgsize);
    mf->cache->memfree(mf->cache,cs);
    return NULL;
  }

  cs->frame_size = 0;
  cs->decoded_ptr = cs->decoded_size = 0;
  cs->mf = mf;

  return cs;
}

void		  cs_Destroy(/* in */ CompressedStream *cs) {
  if (cs == NULL)