MPEG-2 AAC Functions

In the following sections, the parameter maxSfb designates the number of scale factor bands transmitted per group and unpacked from the bitstream. The parameter numSwb stands for the number of scale factor window bands for the short block or the number of scale factor window bands for the long block. The values are computed according to the sampling rate and the block type.

See clause 8.3.1 of ISO/IEC 13818 - 7: 1997.

• UnpackADIFHeader_AAC
  Gets the AAC ADIF format header.
• UnpackADTSFrameHeader_AAC
  Gets ADTS frame header from the input bitstream.
• DecodePrgCfgElt_AAC
  Gets program configuration element from the input bitstream.
• DecodeChanPairElt_AAC
  Gets channel_pair_element from the input bitstream.
• NoiselessDecoder_LC_AAC
  Decodes all data for one channel.
• DecodeDatStrElt_AAC
  Gets data stream element from the input bitstream.
• DecodeFillElt_AAC
  Gets the fill element from the input bitstream.
• QuantInv_AAC
  Performs inverse quantization of Huffman symbols for current channel in-place.
• DecodeMsStereo_AAC
  Processes mid-side (MS) stereo for pair channels in-place.
• DecodeIsStereo_AAC
  Processes intensity stereo for pair channels.
• DeinterleaveSpectrum_AAC
  Deinterleaves the coefficients for short block.
• DecodeTNS_AAC
  Decodes for Temporal Noise Shaping in-place.
• MDCTInv_AAC_32s16s
  Maps time-frequency domain signal into time domain and generates 1024 reconstructed 16-bit signed little-endian PCM samples.
• MDCTInv_AAC_32s_I
  Computes inverse modified discrete cosine transform (MDCT), windowing and overlapping of signals.

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