diff options
| author | Ciro Nishiguchi <ciro.nishiguchi@ni.com> | 2018-10-05 10:33:51 -0500 |
|---|---|---|
| committer | Martin Braun <martin.braun@ettus.com> | 2018-10-05 10:46:31 -0700 |
| commit | 12e4c4405c22093a220882d06872989e2eeb36d3 (patch) | |
| tree | 0f04c8e1831b3250fb572daf98cbab538b2402ca | |
| parent | 2a4bf0197c1c980e15eca7b8f4e4f4e4043b5eb1 (diff) | |
| download | uhd-12e4c4405c22093a220882d06872989e2eeb36d3.tar.gz uhd-12e4c4405c22093a220882d06872989e2eeb36d3.tar.bz2 uhd-12e4c4405c22093a220882d06872989e2eeb36d3.zip | |
uhd: Fix rounding in ddc/duc rate calculation
The DDC and DUC convert the requested rate to an integer before
selecting a decimated / interpolated rate. This causes the selection to
select a lower rate than requested in some corner cases. The effect is
more pronounced when the input rate of the DDC or the output rate of the
DUC is very small.
| -rw-r--r-- | host/lib/rfnoc/ddc_block_ctrl_impl.cpp | 2 | ||||
| -rw-r--r-- | host/lib/rfnoc/duc_block_ctrl_impl.cpp | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/host/lib/rfnoc/ddc_block_ctrl_impl.cpp b/host/lib/rfnoc/ddc_block_ctrl_impl.cpp index 9247708ef..b70ae8959 100644 --- a/host/lib/rfnoc/ddc_block_ctrl_impl.cpp +++ b/host/lib/rfnoc/ddc_block_ctrl_impl.cpp @@ -245,7 +245,7 @@ private: return range; } - double set_output_rate(const int requested_rate, const size_t chan) + double set_output_rate(const double requested_rate, const size_t chan) { const double input_rate = get_arg<double>("input_rate"); const size_t decim_rate = diff --git a/host/lib/rfnoc/duc_block_ctrl_impl.cpp b/host/lib/rfnoc/duc_block_ctrl_impl.cpp index 7f22ca903..cc9d30361 100644 --- a/host/lib/rfnoc/duc_block_ctrl_impl.cpp +++ b/host/lib/rfnoc/duc_block_ctrl_impl.cpp @@ -230,7 +230,7 @@ private: return range; } - double set_input_rate(const int requested_rate, const size_t chan) + double set_input_rate(const double requested_rate, const size_t chan) { const double output_rate = get_arg<double>("output_rate", chan); const size_t interp_rate = boost::math::iround(output_rate/get_input_rates().clip(requested_rate, true)); |