The conformant audio_processor component accepts raw PCM audio from
the input port, passes it through an audio effect or an equalization
stage and forwards it to the output port.
| Port | Index | Notes | 
| 300  301 | OMX_IndexParamPortDefinition | Query / set the port parameters for the audio input/output streams. 
  The audio format must not be encoded. code{nBufferSize} must be a multiple 
  of 32 and and equal to or larger than 1024. nBufferAlignment must be 
  equal to or larger than 32. | 
| OMX_IndexParamAudioPcm | Query / set the port PCM format (read-only for the output port).
  nChannels must be 1, 2, 4, or 8. 5.1 audio can be carried
  inside 8 channels, with the last two channels advertise as blank.
  eNumData must be OMX_NumericalDataSigned.
  eEndian must be OMX_EndianLittle.
  bInterleaved must be OMX_TRUE.
  nBitPerSample must be 16 or 32.
  nSamplingRate must be less or equal to 96000.
  ePCMMode must be OMX_AUDIO_PCMModeLinear. | 
| OMX_IndexParamAudioPortFormat | Query / set audio port format used on this port.  These ports
  support PCM only. | 
| 301 | OMX_IndexConfigAudioEqualizer | Query / set audio equalizer properties or enable / disable 
  equalizer effect. | 
| OMX_IndexConfigBrcmAudioEffectControl | Query / set audio processing plugin properties or enable / disable
  the plugin. |