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| author | Marco Nelissen <marcone@google.com> | 2011-01-29 09:32:05 -0800 |
|---|---|---|
| committer | Android Git Automerger <android-git-automerger@android.com> | 2011-01-29 09:32:05 -0800 |
| commit | cc2915c0b1608933819aa284788dbdb184fe9823 (patch) | |
| tree | ba6c3b5b023f990dc84ab5608199d73dd5c1919b /media/libmedia | |
| parent | 1ac6d08a05aac04f9a5bcc365a9d61244e932767 (diff) | |
| parent | c929677e017759047d94599faa1b80ebe278fefb (diff) | |
| download | frameworks_base-cc2915c0b1608933819aa284788dbdb184fe9823.zip frameworks_base-cc2915c0b1608933819aa284788dbdb184fe9823.tar.gz frameworks_base-cc2915c0b1608933819aa284788dbdb184fe9823.tar.bz2 | |
am c929677e: Merge "Increase the number of useful bits in the spectrum." into gingerbread
* commit 'c929677e017759047d94599faa1b80ebe278fefb':
Increase the number of useful bits in the spectrum.
Diffstat (limited to 'media/libmedia')
| -rw-r--r-- | media/libmedia/Visualizer.cpp | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/media/libmedia/Visualizer.cpp b/media/libmedia/Visualizer.cpp index a660429..43571cf 100644 --- a/media/libmedia/Visualizer.cpp +++ b/media/libmedia/Visualizer.cpp @@ -219,8 +219,13 @@ status_t Visualizer::doFft(uint8_t *fft, uint8_t *waveform) } for (uint32_t i = 0; i < mCaptureSize; i += 2) { - fft[i] = workspace[i >> 1] >> 24; - fft[i + 1] = workspace[i >> 1] >> 8; + short tmp = workspace[i >> 1] >> 21; + while (tmp > 127 || tmp < -128) tmp >>= 1; + fft[i] = tmp; + tmp = workspace[i >> 1]; + tmp >>= 5; + while (tmp > 127 || tmp < -128) tmp >>= 1; + fft[i + 1] = tmp; } return NO_ERROR; |