audio_processor

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Custom Index Metadata
| # OMX.broadcom.audio_processor
300
| audio_processor |
301
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.