diff options
Diffstat (limited to 'libs/ardour/export_format_base.cc')
| -rw-r--r-- | libs/ardour/export_format_base.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libs/ardour/export_format_base.cc b/libs/ardour/export_format_base.cc index a994b97ac3..fa6f1198e9 100644 --- a/libs/ardour/export_format_base.cc +++ b/libs/ardour/export_format_base.cc @@ -198,4 +198,30 @@ ExportFormatBase::do_set_operation (ExportFormatBase const & other, SetOperation return result; } +ExportFormatBase::SampleRate +ExportFormatBase::nearest_sample_rate (framecnt_t sample_rate) +{ + int diff = 0; + int smallest_diff = INT_MAX; + SampleRate best_match = SR_None; + + #define DO_SR_COMPARISON(rate) \ + diff = std::abs((rate) - sample_rate); \ + if(diff < smallest_diff) { \ + smallest_diff = diff; \ + best_match = (rate); \ + } + + DO_SR_COMPARISON(SR_22_05); + DO_SR_COMPARISON(SR_22_05); + DO_SR_COMPARISON(SR_44_1); + DO_SR_COMPARISON(SR_48); + DO_SR_COMPARISON(SR_88_2); + DO_SR_COMPARISON(SR_96); + DO_SR_COMPARISON(SR_192); + + return best_match; + #undef DO_SR_COMPARISON +} + }; // namespace ARDOUR |