Variable Length Decoding

Video data in the bitstream is encoded with Variable Length Code (VLC) tables so that the shortest codes correspond to the most frequent values and the longer codes correspond to the less frequent values. MPEG standard tables contain possible codes and their values.

• ReconstructDCTBlock_MPEG1
  Decodes 8X8 non-intra block using table of Run-Level codes for standard MPEG1, rearranges and performs inverse quantization.
• ReconstructDCTBlockIntra_MPEG1
  Decodes 8X8 intra block using table of Run-Level codes for standard MPEG1, rearranges and performs inverse quantization.
• ReconstructDCTBlock_MPEG2
  Decodes 8X8 non-intra block using table of Run-Level codes for standard MPEG2, rearranges and performs inverse quantization.
• ReconstructDCTBlockIntra_MPEG2
  Decodes 8X8 intra block using table of Run-Level codes for standard MPEG2, rearranges and performs inverse quantization.

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