Samsung S3C6400X User Manual page 640

S3C6400X RISC MICROPROCESSOR
Bitstream Packing
Reconstructed pixel
read/write for intra-
prediction (H.264 case)
MPEG-4 Encode
* when deblocking filter is
enabled
H.264 Encode
In case of encoding, bus-loading for the H.264 is similar to the MPEG-4's requirement. It is because FIMV-MFC
V1.0 uses only one reference frame in the H.264 encoding and the codec modules reuses reference data in the
local memory of the motion estimation module without reloading it from external memory. For the traffic between
the search SRAM and the code module, the access rate for the search SRAM of the H.264 is higher than the
MPEG-4's to support various block sizes.
H.264 decoder data flow
For the H.264 decoding process, the decoding data-path in the encoding loop is re-used except following.
― Bitstream is decoded by the BIT processor and decoded coefficients are stored in the coefficient buffer
with hard-wired reordering.
― For the reference pixel data, the inter-prediction module reads both Y and Cb/Cr data form external
memory. In case of encoding, the data comes from the internal memory of the motion estimation module.
MPEG-4 decoder data flow
The data flow of the MPEG-4 decoding process is the same as the decoding in the MPEG-4 encoding loop except
incoming coefficients from the BIT processor and Y reference frame directly from external SDRAM, not from
internal memory of the motion estimation module.
H.263 decoder data flow
The data flow of the H.263 decoding process is the same as the decoding in the H.263 encoding loop except
incoming coefficients from the BIT processor and Y reference frame directly from external SDRAM, not from
internal memory of the motion estimation module.
VC-1 decoder data flow
The data flow of the VC-1 decoding process is the same as the decoding in the H.264 decoding loop except using
scaler. If there is MULTIRES flag in the sequence header, the decoded picture is scaled up by scaler.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
21-14
Specifications and information herein are subject to change without notice.
MB/sec 0.375
MB/sec
MB/sec 21.663
MB/sec 19.022
MULTI-FORMAT VIDEO CODEC
1.500
0.4 1.3
66.012
58.096
1.500
1.5
74.976
65.208