Fujitsu DTV/STB solution driver (FAPex driver) Documentation [V01L00R00]


FAPEX_AUDEC_HeaacParamsT Struct Reference

Parameters for the HE-AAC decoder. More...

Data Fields

int32_t decoder
int32_t extSamplingRate
int32_t maxOutSamplingRate
uint32_t enableDSSBR
uint32_t enableDMSBR
uint32_t sbrMode
uint32_t enableDOWNMIX
uint32_t downmixMode
uint32_t enableDRC
uint32_t drcTargetRefLevel
uint32_t fadeOutFrameNum
uint32_t fadeInFrameNum
uint32_t muteFrameCount
uint32_t startInsyncFrameCount

Detailed Description

Parameters for the HE-AAC decoder.

This data structure covers all parameters which can be set for the HE-AAC decoder. Setting these parameters is optional. If not the decoder applies the mentioned defaults.

See also:
FAPEX_AUDEC_Ioctl/FAPEX_IOCCOM_AUDEC_SET_CODEC_PARAMS

Field Documentation

The audio decoder ID.

Note:
This field must be set to FAPEX_AUDEC_DECODER_HEAAC.

The external sampling rate for raw decoding (Decoder's default: -1).

The maximum output sampling rate (Decoder's default: 96000).

Enables the DownSampled SBR processing.

  • 0: disable
  • 1: enable (Decoder's default: 0).

Enables the DownMixed SBR processing.

  • 0: disable
  • 1: enable (Decoder's default: 0).

The SBR decoding mode.

  • 0: SBR decoding disabled
  • 1: SBR decoding enabled
  • 2: SBR decoding automatically when SBR is actually present (Decoder's default: 2).

Enables the stereo DOWNMIX for the decoder.

  • 0: disable
  • 1: enable (Decoder's default: 1).

If stereo DOWNMIX is enabled the following modes can be applied.

  • 0: Lo/Ro
  • 1: Lt/Rt (Decoder's default: 0).

Enables DRC and consideration of the Program Reference Level for the decoder.

  • 0: disable
  • 1: enable (Decoder's default: 1).

If DRC is enabled the following target reference level will be applied.

  • 0 - 127 which corresponds to an attenuation of 0 to -31.25dBFS in steps of -0.25dB. (Decoder's default: 127).

Number of frames for falling slope when fadeOut is performed to enter the mute state in case of faulty frames. A value between 1 and 8. (Decoder's default: 5).

Number of frames for rising slope when fadeIn is performed to leave the mute state in case the signal has recovered. A value between 1 and 8. (Decoder's default: 5).

Minimum number of error free frames until rising slope starts to leave mute state. A value between 0 and 255. (Decoder's default: 5).

Number of consecutive frames with same header which must sucessfully decode before the decoder will start. (Codec's default: 1) This parameter allows applications to improve the audio error recognition when the decoder is started with bad streams.


The documentation for this struct was generated from the following file:


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