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/ardour.h"
24 #include "ardour/audio_buffer.h"
25 #include "ardour/buffer_set.h"
26 #include "ardour/click.h"
27 #include "ardour/io.h"
28 #include "ardour/session.h"
29 #include "ardour/tempo.h"
36 using namespace ARDOUR;
39 Pool Click::pool ("click", sizeof (Click), 128);
42 Session::click (framepos_t start, framecnt_t nframes)
44 TempoMap::BBTPointList::const_iterator points_begin;
45 TempoMap::BBTPointList::const_iterator points_end;
52 Glib::RWLock::WriterLock clickm (click_lock, Glib::TRY_LOCK);
54 if (!clickm.locked() || _transport_speed != 1.0 || !_clicking || click_data == 0) {
55 _click_io->silence (nframes);
59 const framepos_t end = start + nframes;
61 BufferSet& bufs = get_scratch_buffers(ChanCount(DataType::AUDIO, 1));
62 buf = bufs.get_audio(0).data();
63 _tempo_map->get_grid (points_begin, points_end, start, end);
65 if (distance (points_begin, points_end) == 0) {
69 for (TempoMap::BBTPointList::const_iterator i = points_begin; i != points_end; ++i) {
72 if (click_emphasis_data) {
73 clicks.push_back (new Click ((*i).frame, click_emphasis_length, click_emphasis_data));
78 if (click_emphasis_data == 0 || (click_emphasis_data && (*i).beat != 1)) {
79 clicks.push_back (new Click ((*i).frame, click_length, click_data));
87 memset (buf, 0, sizeof (Sample) * nframes);
89 for (list<Click*>::iterator i = clicks.begin(); i != clicks.end(); ) {
92 framecnt_t internal_offset;
94 list<Click*>::iterator next;
100 if (clk->start < start) {
103 internal_offset = clk->start - start;
106 if (nframes < internal_offset) {
107 /* we've just located or something..
108 effectively going backwards.
109 lets get the flock out of here */
113 copy = min (clk->duration - clk->offset, nframes - internal_offset);
115 memcpy (buf + internal_offset, &clk->data[clk->offset], copy * sizeof (Sample));
119 if (clk->offset >= clk->duration) {
128 _click_io->copy_to_outputs (bufs, DataType::AUDIO, nframes, 0);
132 Session::setup_click_sounds (Sample** data, Sample const * default_data, framecnt_t* length, framecnt_t default_length, string const & path)
134 if (*data != default_data) {
141 *data = const_cast<Sample*> (default_data);
142 *length = default_length;
150 if ((sndfile = sf_open (path.c_str(), SFM_READ, &info)) == 0) {
152 sf_error_str (0, errbuf, sizeof (errbuf) - 1);
153 warning << string_compose (_("cannot open click soundfile %1 (%2)"), path, errbuf) << endmsg;
158 /* read the (possibly multi-channel) click data into a temporary buffer */
160 sf_count_t const samples = info.frames * info.channels;
162 Sample* tmp = new Sample[samples];
164 if (sf_readf_float (sndfile, tmp, info.frames) != info.frames) {
166 warning << _("cannot read data from click soundfile") << endmsg;
172 *data = new Sample[info.frames];
173 *length = info.frames;
175 /* mix down to mono */
177 for (int i = 0; i < info.frames; ++i) {
179 for (int j = 0; j < info.channels; ++j) {
180 (*data)[i] = tmp[i * info.channels + j];
182 (*data)[i] /= info.channels;
192 Session::setup_click_sounds (int which)
196 if (which == 0 || which == 1) {
201 default_click_length,
202 Config->get_click_sound ()
206 if (which == 0 || which == -1) {
208 &click_emphasis_data,
209 default_click_emphasis,
210 &click_emphasis_length,
211 default_click_emphasis_length,
212 Config->get_click_emphasis_sound ()
218 Session::clear_clicks ()
220 Glib::RWLock::WriterLock lm (click_lock);
222 for (Clicks::iterator i = clicks.begin(); i != clicks.end(); ++i) {