This fixes valgrind warnings when running this test. The mismatched
delete could also potentially have caused memory corruption issues
while running the tests.
2. add decoder api UT for EC: Disable/Enable EC
3. Fix a decoder bug when EC is disabled
itoltalMbDec should be set to zero when encouter a new sequence/picture, even when EC is disabled.
Also add an option for overriding the seed at startup.
This allows reproducing temporary issues by rerunning the test suite
with the same random seed.
Note that if tests are added or removed (or tests are skipped by passing
the --gtest_filter option), or if running on a different libc, the same
seed might result in different random values.
Previously these lines were within an #ifdef MT_ENABLED block,
but now that threading is enabled by default, we should probably
only do it if threading has been requested.
This makes sure we don't accidentally return the same sequence
of random numbers multiple times within one test (which would
be very non-random).
Every time srand(time()) is called, the pseudo random number
generator is initialized to the same value (as long as time()
returned the same value).
By initializing the random number generator once and for all
before starting to run the unit tests, we are sure we don't
need to reinitialize it within all the tests and all the
functions that use random numbers.
This fixes occasional errors in MotionEstimateTest.
MotionEstimateTest was designed to allow the test to occasionally
not succeed - if it didn't succeed, it tried again, up to 100 times.
However, since the YUVPixelDataGenerator function reset the random
seed to time(), every attempt actually ran with the same random
data (as long as all 100 attempts ran within 1 second) - thus if
one attempt in MotionEstimateTest failed, all 100 of them would
fail. If the utility functions don't touch the random seed,
this is not an issue.
1. add pNalLen in Structure SWelsEncoderOutput to store each nal length
2. rename iNalLengthInByte[MAX_NAL_UNITS_IN_LAYER] to pNalLengthInByte in Structure SLayerBSInfo, the pointer point to pNalLen, like pBSBuf point to pFrameBS.
