2 Copyright (C) 2002 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 #include "ardour/amp.h"
24 #include "ardour/ardour.h"
25 #include "ardour/audio_buffer.h"
26 #include "ardour/buffer_set.h"
27 #include "ardour/click.h"
28 #include "ardour/io.h"
29 #include "ardour/session.h"
30 #include "ardour/tempo.h"
37 using namespace ARDOUR;
40 Pool Click::pool ("click", sizeof (Click), 1024);
43 Session::click (framepos_t start, framecnt_t nframes)
45 TempoMap::BBTPointList::const_iterator points_begin;
46 TempoMap::BBTPointList::const_iterator points_end;
48 framecnt_t click_distance;
54 Glib::RWLock::WriterLock clickm (click_lock, Glib::TRY_LOCK);
56 /* how far have we moved since the last time the clicks got cleared
59 click_distance = start - _clicks_cleared;
61 if (!clickm.locked() || _transport_speed != 1.0 || !_clicking || click_data == 0 || ((click_distance + nframes) < _worst_track_latency)) {
62 _click_io->silence (nframes);
66 start -= _worst_track_latency;
67 /* start could be negative at this point */
68 const framepos_t end = start + nframes;
69 /* correct start, potentially */
70 start = max (start, (framepos_t) 0);
72 BufferSet& bufs = get_scratch_buffers(ChanCount(DataType::AUDIO, 1));
73 buf = bufs.get_audio(0).data();
75 _tempo_map->get_grid (points_begin, points_end, start, end);
77 if (distance (points_begin, points_end) == 0) {
81 for (TempoMap::BBTPointList::const_iterator i = points_begin; i != points_end; ++i) {
84 if (click_emphasis_data) {
85 clicks.push_back (new Click ((*i).frame, click_emphasis_length, click_emphasis_data));
90 if (click_emphasis_data == 0 || (click_emphasis_data && (*i).beat != 1)) {
91 clicks.push_back (new Click ((*i).frame, click_length, click_data));
98 memset (buf, 0, sizeof (Sample) * nframes);
100 for (list<Click*>::iterator i = clicks.begin(); i != clicks.end(); ) {
103 framecnt_t internal_offset;
108 if (clk->start < start) {
111 internal_offset = clk->start - start;
114 if (nframes < internal_offset) {
115 /* we've just located or something..
116 effectively going backwards.
117 lets get the flock out of here */
121 copy = min (clk->duration - clk->offset, nframes - internal_offset);
123 memcpy (buf + internal_offset, &clk->data[clk->offset], copy * sizeof (Sample));
127 if (clk->offset >= clk->duration) {
129 i = clicks.erase (i);
135 _click_gain->run (bufs, 0, 0, nframes, false);
136 _click_io->copy_to_outputs (bufs, DataType::AUDIO, nframes, 0);
140 Session::setup_click_sounds (Sample** data, Sample const * default_data, framecnt_t* length, framecnt_t default_length, string const & path)
142 if (*data != default_data) {
149 *data = const_cast<Sample*> (default_data);
150 *length = default_length;
158 if ((sndfile = sf_open (path.c_str(), SFM_READ, &info)) == 0) {
160 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
161 warning << string_compose (_("cannot open click soundfile %1 (%2)"), path, errbuf) << endmsg;
166 /* read the (possibly multi-channel) click data into a temporary buffer */
168 sf_count_t const samples = info.frames * info.channels;
170 Sample* tmp = new Sample[samples];
172 if (sf_readf_float (sndfile, tmp, info.frames) != info.frames) {
174 warning << _("cannot read data from click soundfile") << endmsg;
180 *data = new Sample[info.frames];
181 *length = info.frames;
183 /* mix down to mono */
185 for (int i = 0; i < info.frames; ++i) {
187 for (int j = 0; j < info.channels; ++j) {
188 (*data)[i] = tmp[i * info.channels + j];
190 (*data)[i] /= info.channels;
200 Session::setup_click_sounds (int which)
204 if (which == 0 || which == 1) {
209 default_click_length,
210 Config->get_click_sound ()
214 if (which == 0 || which == -1) {
216 &click_emphasis_data,
217 default_click_emphasis,
218 &click_emphasis_length,
219 default_click_emphasis_length,
220 Config->get_click_emphasis_sound ()
226 Session::clear_clicks ()
228 Glib::RWLock::WriterLock lm (click_lock);
230 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {
235 _clicks_cleared = _transport_frame;