diff options
| author | Andy Hung <hunga@google.com> | 2014-04-02 11:24:53 -0700 |
|---|---|---|
| committer | Andy Hung <hunga@google.com> | 2014-04-02 14:33:26 -0700 |
| commit | 84a0c6e87c48f58a0d3be71961432c086a4d24cc (patch) | |
| tree | a9bea7e95223dc4d1f3219d4e60dd385881ec6d8 /services/audioflinger/test-resample.cpp | |
| parent | 99021c47f45ee8bf3317cff7d08226e76c8d8227 (diff) | |
| download | frameworks_av-84a0c6e87c48f58a0d3be71961432c086a4d24cc.zip frameworks_av-84a0c6e87c48f58a0d3be71961432c086a4d24cc.tar.gz frameworks_av-84a0c6e87c48f58a0d3be71961432c086a4d24cc.tar.bz2 | |
Change references of Q19.12 to Q4.27 for clarity
Change-Id: I5beb7daf6ff9bc123ff3582f7c294edcaf8652f6
Signed-off-by: Andy Hung <hunga@google.com>
Diffstat (limited to 'services/audioflinger/test-resample.cpp')
| -rw-r--r-- | services/audioflinger/test-resample.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/services/audioflinger/test-resample.cpp b/services/audioflinger/test-resample.cpp index 3ab3ba9..7b7cdac 100644 --- a/services/audioflinger/test-resample.cpp +++ b/services/audioflinger/test-resample.cpp @@ -352,8 +352,9 @@ int main(int argc, char* argv[]) { size_t out_frames = output_size/8; /* set volume precision to 12 bits, so the volume scale is 1<<12. - * This means the "integer" part fits in the Q19.12 precision - * representation of output int32_t. + * The output int32_t is represented as Q4.27, with 4 bits of guard + * followed by the int16_t Q.15 portion, and then 12 trailing bits of + * additional precision. * * Generally 0 < volumePrecision <= 14 (due to the limits of * int16_t values for Volume). volumePrecision cannot be 0 due |