2 Copyright (C) 20002 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.
24 #include <ardour/ardour.h>
25 #include <ardour/session.h>
26 #include <ardour/tempo.h>
27 #include <ardour/io.h>
34 using namespace ARDOUR;
37 Pool Session::Click::pool ("click", sizeof (Click), 128);
40 Session::click (jack_nframes_t start, jack_nframes_t nframes, jack_nframes_t offset)
42 TempoMap::BBTPointList *points;
51 Glib::RWLock::WriterLock clickm (click_lock, Glib::TRY_LOCK);
53 if (!clickm.locked() || _transport_speed != 1.0 || !_clicking || click_data == 0) {
54 _click_io->silence (nframes, offset);
58 end = start + nframes;
60 buf = _passthru_buffers[0];
61 points = _tempo_map->get_points (start, end);
67 if (points->empty()) {
72 for (TempoMap::BBTPointList::iterator i = points->begin(); i != points->end(); ++i) {
75 if (click_emphasis_data == 0 || (click_emphasis_data && (*i).beat != 1)) {
76 clicks.push_back (new Click ((*i).frame, click_length, click_data));
81 if (click_emphasis_data) {
82 clicks.push_back (new Click ((*i).frame, click_emphasis_length, click_emphasis_data));
89 memset (buf, 0, sizeof (Sample) * nframes);
91 for (list<Click*>::iterator i = clicks.begin(); i != clicks.end(); ) {
94 jack_nframes_t internal_offset;
96 list<Click*>::iterator next;
102 if (clk->start < start) {
105 internal_offset = clk->start - start;
108 if (nframes < internal_offset) {
109 /* we've just located or something..
110 effectively going backwards.
111 lets get the flock out of here */
115 copy = min (clk->duration - clk->offset, nframes - internal_offset);
117 memcpy (buf + internal_offset, &clk->data[clk->offset], copy * sizeof (Sample));
121 if (clk->offset >= clk->duration) {
130 _click_io->deliver_output (_passthru_buffers, 1, nframes, offset);
134 Session::setup_click_sounds (int which)
141 if ((which == 0 || which == 1)) {
143 if (click_data && click_data != default_click) {
144 delete [] click_data;
148 if (click_sound.length() == 0) {
150 click_data = const_cast<Sample*> (default_click);
151 click_length = default_click_length;
155 if ((sndfile = sf_open (click_sound.c_str(), SFM_READ, &info)) == 0) {
157 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
158 warning << string_compose (_("cannot open click soundfile %1 (%2)"), click_sound, errbuf) << endmsg;
163 click_data = new Sample[info.frames];
164 click_length = info.frames;
166 if (sf_read_float (sndfile, click_data, info.frames) != info.frames) {
167 warning << _("cannot read data from click soundfile") << endmsg;
178 if ((which == 0 || which == -1)) {
180 if (click_emphasis_data && click_emphasis_data != default_click_emphasis) {
181 delete [] click_emphasis_data;
182 click_emphasis_data = 0;
185 if (click_emphasis_sound.length() == 0) {
186 click_emphasis_data = const_cast<Sample*> (default_click_emphasis);
187 click_emphasis_length = default_click_emphasis_length;
189 if ((sndfile = sf_open (click_emphasis_sound.c_str(), SFM_READ, &info)) == 0) {
191 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
192 warning << string_compose (_("cannot open click emphasis soundfile %1 (%2)"), click_emphasis_sound, errbuf) << endmsg;
196 click_emphasis_data = new Sample[info.frames];
197 click_emphasis_length = info.frames;
199 if (sf_read_float (sndfile, click_emphasis_data, info.frames) != info.frames) {
200 warning << _("cannot read data from click emphasis soundfile") << endmsg;
201 delete click_emphasis_data;
202 click_emphasis_data = 0;
211 Session::clear_clicks ()
213 Glib::RWLock::WriterLock lm (click_lock);
215 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {
223 Session::set_click_sound (string path)
225 if (path != click_sound) {
227 setup_click_sounds (1);
232 Session::set_click_emphasis_sound (string path)
234 if (path != click_emphasis_sound) {
235 click_emphasis_sound = path;
236 setup_click_sounds (-1);
241 Session::set_clicking (bool yn)
243 if (click_requested != yn) {
244 click_requested = yn;
247 if (_click_io && click_data) {
254 ControlChanged (Clicking); /* EMIT SIGNAL */
259 Session::get_clicking () const
261 return click_requested;