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| author | Mathias Agopian <mathias@google.com> | 2012-11-01 21:03:46 -0700 |
|---|---|---|
| committer | Mathias Agopian <mathias@google.com> | 2012-11-01 21:03:46 -0700 |
| commit | 4ed475d3ad4231370371e14a94779c5d300eb3c5 (patch) | |
| tree | 010c4fcad2bdf08f42cde74686ea66d222893866 /media/libstagefright/MPEG4Writer.cpp | |
| parent | 719ae96a5308273100a68d112f131c61f9b3db81 (diff) | |
| download | frameworks_av-4ed475d3ad4231370371e14a94779c5d300eb3c5.zip frameworks_av-4ed475d3ad4231370371e14a94779c5d300eb3c5.tar.gz frameworks_av-4ed475d3ad4231370371e14a94779c5d300eb3c5.tar.bz2 | |
new coefficients for the vhq resampler
previous coefficients were provided by a 3rd party and didn't have a
way to re-generate them. we're now using the 'fir' utility.
the performance of the filter is virtually identical, except for
the down-sampling case which seems slightly better now:
It looks like both the previous and new coefficients are generating
some sort of clipping for full-scale signals in the down-sampling case
(although the new ones seem better), the reason for that is
unknown (see bug: 7453062)
Also updated the HQ coefficients for the down-samplers, previous ones
were a little bit too conservative -- the new ones push the cut-off
frequency up by about 1 KHz.
Change-Id: I54a827b5c707c7cc41268ed01283758dce1d7647
Diffstat (limited to 'media/libstagefright/MPEG4Writer.cpp')
0 files changed, 0 insertions, 0 deletions