diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2012-01-11 14:36:46 +0000 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2012-01-11 14:36:46 +0000 |
commit | 426cb79763dfabe5bdcc5e66c7412608adf79f3d (patch) | |
tree | 63ec3db20b74d7b732fbd74a47a33dc2e26a4215 /libs/ardour/session_click.cc | |
parent | 39d41e46c5935431347863aeb5a732d2ca04bba9 (diff) |
fix latency compensation for the click
git-svn-id: svn://localhost/ardour2/branches/3.0@11226 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/session_click.cc')
-rw-r--r-- | libs/ardour/session_click.cc | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/libs/ardour/session_click.cc b/libs/ardour/session_click.cc index d5a3bc5e42..a9f867e24c 100644 --- a/libs/ardour/session_click.cc +++ b/libs/ardour/session_click.cc @@ -44,6 +44,7 @@ Session::click (framepos_t start, framecnt_t nframes) TempoMap::BBTPointList::const_iterator points_begin; TempoMap::BBTPointList::const_iterator points_end; Sample *buf; + framecnt_t click_distance; if (_click_io == 0) { return; @@ -51,15 +52,26 @@ Session::click (framepos_t start, framecnt_t nframes) Glib::RWLock::WriterLock clickm (click_lock, Glib::TRY_LOCK); - if (!clickm.locked() || _transport_speed != 1.0 || !_clicking || click_data == 0) { + /* how far have we moved since the last time the clicks got cleared + */ + + click_distance = start - _clicks_cleared; + + + if (!clickm.locked() || _transport_speed != 1.0 || !_clicking || click_data == 0 || ((click_distance + nframes) < _worst_track_latency)) { _click_io->silence (nframes); return; } + start -= _worst_track_latency; + /* start could be negative at this point */ const framepos_t end = start + nframes; + /* correct start, potentially */ + start = max (start, (framepos_t) 0); BufferSet& bufs = get_scratch_buffers(ChanCount(DataType::AUDIO, 1)); buf = bufs.get_audio(0).data(); + _tempo_map->get_grid (points_begin, points_end, start, end); if (distance (points_begin, points_end) == 0) { @@ -71,16 +83,17 @@ Session::click (framepos_t start, framecnt_t nframes) case 1: if (click_emphasis_data) { clicks.push_back (new Click ((*i).frame, click_emphasis_length, click_emphasis_data)); + cerr << "click emph @ " << (*i).frame << endl; } break; default: if (click_emphasis_data == 0 || (click_emphasis_data && (*i).beat != 1)) { clicks.push_back (new Click ((*i).frame, click_length, click_data)); + cerr << "click norm @ " << (*i).frame << endl; } break; } - } run_clicks: @@ -91,11 +104,8 @@ Session::click (framepos_t start, framecnt_t nframes) framecnt_t copy; framecnt_t internal_offset; Click *clk; - list<Click*>::iterator next; clk = *i; - next = i; - ++next; if (clk->start < start) { internal_offset = 0; @@ -118,11 +128,10 @@ Session::click (framepos_t start, framecnt_t nframes) if (clk->offset >= clk->duration) { delete clk; - clicks.erase (i); + i = clicks.erase (i); + } else { + ++i; } - - - i = next; } _click_io->copy_to_outputs (bufs, DataType::AUDIO, nframes, 0); @@ -224,4 +233,5 @@ Session::clear_clicks () } clicks.clear (); + _clicks_cleared = _transport_frame; } |