Make sure our aac decoder handles this parameter.

            return OMX_ErrorNone;

        }

        case OMX_IndexParamAudioPcm:

        {

            const OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams =

                (OMX_AUDIO_PARAM_PCMMODETYPE *)params;

            if (pcmParams->nPortIndex != 1) {

                return OMX_ErrorUndefined;

            }

            return OMX_ErrorNone;

        }

        default:

            return SimpleSoftOMXComponent::internalSetParameter(index, params);

    }