This section describes the functions for H.264 Decoder in accordance with JVT-G050 ([JVTG050]) standard.
Note
This Motion Compensation process is performed by general motion compensation functions (See General Functions), which sum the predictor data and the residual and stores the result into the destination picture.
The following schemes show macroblock decoding with the help of video coding functions. The schemes for Intra16x16, intra 4x4, and P or B macroblock decoding show two paths of video coding functions using low and high level functions respectively. The blocks marked with yellow background color are interchangeable.
The following graph shows decoding process for I macroblock type in the case of Intra_4x4 prediction mode.
The following graph shows decoding process for P or B macroblock type.
The following graph shows decoding process for SI or SP macroblock type. Note that SI is an intra macroblock and SP is a predicted macroblock but their decoding schemes are similar.
