Closing the CODEC Procedure

The following example shows an example of how to close a CODEC instance. The ioCloseCodec routine frees memory associated with the CODEC.

LONG ioCloseCodec ( PCCB pccb )

{
   LONG       rc = MMIO_SUCCESS; /* Return code of IOProc's call. */

   ENTERCRITX;
   if (pccb->codecopen.pSrcHdr) {
      HhpFreeMem(hheap,(PVOID)pccb->codecopen.pSrcHdr);
      }

   if (pccb->codecopen.pDstHdr) {
      HhpFreeMem(hheap,(PVOID)pccb->codecopen.pDstHdr);
      }

   if (pccb->codecopen.pControlHdr) {
      HhpFreeMem(hheap,(PVOID)pccb->codecopen.pControlHdr);
      }

   if (pccb->codecopen.pOtherInfo) {
      HhpFreeMem(hheap,(PVOID)pccb->codecopen.pOtherInfo);
      }

   if (pccb->hCodec) {
      rc = pccb->pmmioproc(&pccb->hCodec,
                           MMIOM_CODEC_CLOSE,
                           0L,
                           0L);

      if (!rc) {
         pccb->hCodec = 0L;
         }
      }

   if (pccb->hmodule) {
//----DosFreeModule(pccb->hmodule);
      pccb->hmodule = 0;
      }

   HhpFreeMem(hheap,(PVOID)pccb);
   pccb = NULL;
   EXITCRIT;

   return(rc);
}