2 Copyright (C) 2007 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.
20 #ifndef __ardour_silentfilesource_h__
21 #define __ardour_silentfilesource_h__
24 #include <ardour/audiofilesource.h>
28 class SilentFileSource : public AudioFileSource {
30 virtual ~SilentFileSource ();
32 int update_header (nframes_t when, struct tm&, time_t) { return 0; }
33 int flush_header () { return 0; }
34 float sample_rate () const { return _sample_rate; }
36 void set_length (nframes_t len);
38 bool destructive() const { return false; }
39 bool can_be_analysed() const { return false; }
45 SilentFileSource (Session&, const XMLNode&, nframes_t nframes, float sample_rate);
47 friend class SourceFactory;
49 nframes_t read_unlocked (Sample *dst, nframes_t start, nframes_t cnt) const {
50 memset (dst, 0, sizeof (Sample) * cnt);
54 nframes_t write_unlocked (Sample *dst, nframes_t cnt) { return 0; }
56 void set_header_timeline_position () {}
58 int read_peaks_with_fpp (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_unit, nframes_t fpp) const {
59 memset (peaks, 0, sizeof (PeakData) * npeaks);
67 #endif /* __ardour_audiofilesource_h__ */