MPEG-4 AAC Functions

This section introduces primitive functions for MPEG-4 AAC operations.

• DecodeMainHeader_AAC
  Gets main header information and main layer information from bit stream.
• DecodeExtensionHeader_AAC
  Gets extension header information and extension layer information from bit stream.
• DecodePNS_AAC
  Implements perceptual noise substitution (PNS) coding within individual channel stream (ICS).
• DecodeMsPNS_AAC
  Implements perceptual noise substitution (PNS) coding in the case of joint coding.
• DecodeChanPairElt_MP4_AAC
  Gets channel_pair_element from the input bitstream.
• LongTermReconstruct_AAC
  Uses Long Term Reconstruct (LTR) to reduce signal redundancy between successive coding frames.
• MDCTFwd_AAC_32s
  Generates spectrum coefficient of PCM samples.
• MDCTFwd_AAC_32s_I
  Computes forward modified discrete cosine transform (MDCT) of windowed signals.
• EncodeTNS_AAC
  Performs reversion of TNS in the Long Term Reconstruct loop in-place.
• LongTermPredict_AAC
  Gets the predicted time domain signals in the Long Term Reconstruct (LTP) loop.
• NoiselessDecode_AAC
  Performs noiseless decoding.
• LtpUpdate_AAC
  Performs required buffer update in the Long Term Reconstruct (LTP) loop.

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