diff options
Diffstat (limited to 'Transceiver52M/Resampler.cpp')
| -rw-r--r-- | Transceiver52M/Resampler.cpp | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/Transceiver52M/Resampler.cpp b/Transceiver52M/Resampler.cpp index 624b666..e4b66a7 100644 --- a/Transceiver52M/Resampler.cpp +++ b/Transceiver52M/Resampler.cpp @@ -173,10 +173,15 @@ int Resampler::rotate(float *in, size_t in_len, float *out, size_t out_len) int hist_len = filt_len - 1; if (!check_vec_len(in_len, out_len, p, q)) - return -1; - - /* Insert history */ - memcpy(&in[-2 * hist_len], history, hist_len * 2 * sizeof(float)); + return -1; + + if (history_on) { + memcpy(&in[-2 * hist_len], + history, hist_len * 2 * sizeof(float)); + } else { + memset(&in[-2 * hist_len], 0, + hist_len * 2 * sizeof(float)); + } /* Generate output from precomputed input/output paths */ for (size_t i = 0; i < out_len; i++) { @@ -190,8 +195,10 @@ int Resampler::rotate(float *in, size_t in_len, float *out, size_t out_len) } /* Save history */ - memcpy(history, &in[2 * (in_len - hist_len)], - hist_len * 2 * sizeof(float)); + if (history_on) { + memcpy(history, &in[2 * (in_len - hist_len)], + hist_len * 2 * sizeof(float)); + } return out_len; } @@ -221,8 +228,14 @@ size_t Resampler::len() return filt_len; } +void Resampler::enableHistory(bool on) +{ + history_on = on; +} + Resampler::Resampler(size_t p, size_t q, size_t filt_len) - : in_index(NULL), out_path(NULL), partitions(NULL), history(NULL) + : in_index(NULL), out_path(NULL), partitions(NULL), + history(NULL), history_on(true) { this->p = p; this->q = q; |