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Copyright (C) 2007 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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#ifndef __ardour_silentfilesource_h__
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#define __ardour_silentfilesource_h__
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#include "ardour/audiofilesource.h"
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class SilentFileSource : public AudioFileSource {
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int update_header (framepos_t /*when*/, struct tm&, time_t) { return 0; }
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int flush_header () { return 0; }
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float sample_rate () const { return _sample_rate; }
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void set_length (framecnt_t len) { _length = len; }
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bool destructive() const { return false; }
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bool can_be_analysed() const { return false; }
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bool clamped_at_unity() const { return false; }
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friend class SourceFactory;
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SilentFileSource (Session& s, const XMLNode& x, framecnt_t len, float srate)
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, AudioFileSource (s, x, false)
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framecnt_t read_unlocked (Sample *dst, framepos_t /*start*/, framecnt_t cnt) const {
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memset (dst, 0, sizeof (Sample) * cnt);
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framecnt_t write_unlocked (Sample */*dst*/, framecnt_t /*cnt*/) { return 0; }
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void set_header_timeline_position () {}
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int read_peaks_with_fpp (PeakData *peaks, framecnt_t npeaks, framepos_t /*start*/, framecnt_t /*cnt*/,
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double /*samples_per_unit*/, framecnt_t /*fpp*/) const {
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memset (peaks, 0, sizeof (PeakData) * npeaks);
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#endif /* __ardour_audiofilesource_h__ */