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modify the decode_mosaicdisplay demo, get error!

Hi All

   The attachment is my code.

    I use omx_05_02_00_30.. I modify the decode_mosicdisplay demo in order to display four picurte.   The program is pending in the following statement

   // wait the allocate done.
   for(j = 0; j < DECODE_CHANNEL; j++)
   {
      printf("semp_pend:%d\n",j);
      semp_pend (pAppData->decILComp[j]->done_sem);
    }

   If you have any suggestions, please tell me. Thank you!

   Eric4645.src.zip