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>
28 #include <ardour/buffer_set.h>
35 using namespace ARDOUR;
38 Pool Session::Click::pool ("click", sizeof (Click), 128);
41 Session::click (jack_nframes_t start, jack_nframes_t nframes, jack_nframes_t offset)
43 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 BufferSet& bufs = get_scratch_buffers(ChanCount(DataType::AUDIO, 1));
61 buf = bufs.get_audio(0).data(nframes);
62 points = _tempo_map->get_points (start, end);
68 if (points->empty()) {
73 for (TempoMap::BBTPointList::iterator i = points->begin(); i != points->end(); ++i) {
76 if (click_emphasis_data == 0 || (click_emphasis_data && (*i).beat != 1)) {
77 clicks.push_back (new Click ((*i).frame, click_length, click_data));
82 if (click_emphasis_data) {
83 clicks.push_back (new Click ((*i).frame, click_emphasis_length, click_emphasis_data));
90 memset (buf, 0, sizeof (Sample) * nframes);
92 for (list<Click*>::iterator i = clicks.begin(); i != clicks.end(); ) {
95 jack_nframes_t internal_offset;
97 list<Click*>::iterator next;
103 if (clk->start < start) {
106 internal_offset = clk->start - start;
109 if (nframes < internal_offset) {
110 /* we've just located or something..
111 effectively going backwards.
112 lets get the flock out of here */
116 copy = min (clk->duration - clk->offset, nframes - internal_offset);
118 memcpy (buf + internal_offset, &clk->data[clk->offset], copy * sizeof (Sample));
122 if (clk->offset >= clk->duration) {
131 _click_io->deliver_output (bufs, nframes, offset);
135 Session::setup_click_sounds (int which)
142 if ((which == 0 || which == 1)) {
144 if (click_data && click_data != default_click) {
145 delete [] click_data;
149 if (click_sound.length() == 0) {
151 click_data = const_cast<Sample*> (default_click);
152 click_length = default_click_length;
156 if ((sndfile = sf_open (click_sound.c_str(), SFM_READ, &info)) == 0) {
158 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
159 warning << string_compose (_("cannot open click soundfile %1 (%2)"), click_sound, errbuf) << endmsg;
164 click_data = new Sample[info.frames];
165 click_length = info.frames;
167 if (sf_read_float (sndfile, click_data, info.frames) != info.frames) {
168 warning << _("cannot read data from click soundfile") << endmsg;
179 if ((which == 0 || which == -1)) {
181 if (click_emphasis_data && click_emphasis_data != default_click_emphasis) {
182 delete [] click_emphasis_data;
183 click_emphasis_data = 0;
186 if (click_emphasis_sound.length() == 0) {
187 click_emphasis_data = const_cast<Sample*> (default_click_emphasis);
188 click_emphasis_length = default_click_emphasis_length;
190 if ((sndfile = sf_open (click_emphasis_sound.c_str(), SFM_READ, &info)) == 0) {
192 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
193 warning << string_compose (_("cannot open click emphasis soundfile %1 (%2)"), click_emphasis_sound, errbuf) << endmsg;
197 click_emphasis_data = new Sample[info.frames];
198 click_emphasis_length = info.frames;
200 if (sf_read_float (sndfile, click_emphasis_data, info.frames) != info.frames) {
201 warning << _("cannot read data from click emphasis soundfile") << endmsg;
202 delete click_emphasis_data;
203 click_emphasis_data = 0;
212 Session::clear_clicks ()
214 Glib::RWLock::WriterLock lm (click_lock);
216 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {
224 Session::set_click_sound (string path)
226 if (path != click_sound) {
228 setup_click_sounds (1);
233 Session::set_click_emphasis_sound (string path)
235 if (path != click_emphasis_sound) {
236 click_emphasis_sound = path;
237 setup_click_sounds (-1);
242 Session::set_clicking (bool yn)
244 if (click_requested != yn) {
245 click_requested = yn;
248 if (_click_io && click_data) {
255 ControlChanged (Clicking); /* EMIT SIGNAL */
260 Session::get_clicking () const
262 return click_requested;