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MULTI-FORMAT VIDEO CODEC
S3C6400X RISC MICROPROCESSOR
mode improves the bandwidth efficiency.
Figure 21.29
Figure 21.29 illustrates the pipeline structure of the decoding case that is applied to both the H.263 and the H.264.
The number between brackets means the macroblock address is being processed.
Stand-alone mode
Another mode, called as 'standalone mode', performs filtering process after making reconstructed frame, not
macroblock. In the stand-alone mode, the deblocking filter module reads an entire frame decoded already, and
writes it to specified frame buffer after filtering. It needs more bandwidth of external memory bus compared to the
on-the-fly mode. In the on-the-fly mode, the input to the filter is from a buffer in the codec, not from external
memory.
While stand-alone deblocking filtering, other modules of the codec are in idle state. Therefore, total time for
processing complete 1 frame is longer than the on-the-fly mode.
The filtered frame can be stored to a specified frame buffer or overwritten to the source frame buffer where the
input frame to the filter exists.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
21-38
Specifications and information herein are subject to change without notice.
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