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FIMV-MFC V1.0
MULTI-FORMAT
CODEC
VIDEO
Encoder operation
In case of encoding, quantized coefficients are written to the internal memory of the coefficient buffer interface
without any reordering. When the BIT processor reads the coefficients, they are reordered and the flags that
indicate corresponding coefficient has a non-zero value are sent to the BIT processor to check if there is
coefficient to be encoded. The BIT processor can know the number of the coefficients that have non-zero value by
simply counting number of bit that is not zero. Therefore, the BIT processor read only the non-zero coefficients
and computes coded block pattern without consuming any computation power.
Figure 21.37 MPEG-4 encoding case
Figure 21.38 H.264 encoding case
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
21-47
Specifications and information herein are subject to change without notice.
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