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24 www.xilinx.com H.264 Motion Estimation Engine
UG453 (v1.1) April 23, 2008
Chapter 5: Verifying the System
R
Running the Verification Tests
There are five tests that can be run by the user. Each test has varying characteristics,
including varying video formats, parameter settings, etc. A description of the tests is given
in the
Appendix, “Supporting Information” and is also summarized in the batch scripts
listed under item 3 (Verification scripts) above.
Verification is automated down to running the simple editable Level1 batch script. It
contains the command line:
perl -I"..\..\TestBenchSupport" MotionEstimation_Verification.pl
[TestLevel][No. Frames][Test#]
TestLevel: 1 (only 1 is available)
No. Frames: between 1 and 10 inclusive
Test#: between 0 and 5 inclusive (0 runs all tests in order from 1 to 5)
Edit the file as desired. Double clicking on the batch file invokes the appropriate test to be
executed. Level 1 simulation is summarized in
Table 5-1.
Verification Process (Level 1)
Table 5-1 shows the verification process (Level 1).
Table 5-1: Verifcation Level Summary
Verification
Level
Reference Executable
HW
Representation
Notes
Level 1 ArchC_rev3\bin\len
cod.exe
MTI Simulation
(precompiled
libraries)
• Reference – uses structurally modified reference code
to generate stimulus and expected Motion Estimation
Engine outputs for verification at Motion Estimation
level.
• Unit under test – uses same precompiled object code
libraries as simulation. Uses stimulus files generated
above as simulation input stimulus.
• Detailed – used for debugging.
• RTL simulation, thus, only a couple of frames per
hour, depending on the frame size.
X-Ref Target - Figure 5-1
Figure 5-1: Verification Process (Level 1)
UG453_03_091107
Modified JM10.2
Reference Software
\ArchC_Rev3\bin\lencod.exe
HW Stimulus files:
MotionEstimation...in.txt
ModelSim/Testbench
Expected Output files:
Sitmuli/MotionEstimation...out.txt
END
Compare
ModelSim Output file:
MotionEstimation...out.txt
START
.yuv Video
Source file
.cfg encoder
config file