2 Copyright (C) 2006 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.
21 #ifndef __ardour_destructive_file_source_h__
22 #define __ardour_destructive_file_source_h__
26 #include <ardour/sndfilesource.h>
32 class DestructiveFileSource : public SndFileSource {
34 DestructiveFileSource (Session&, std::string path, SampleFormat samp_format, HeaderFormat hdr_format, nframes_t rate,
35 Flag flags = AudioFileSource::Flag (AudioFileSource::Writable));
37 DestructiveFileSource (Session&, std::string path, Flag flags);
39 DestructiveFileSource (Session&, const XMLNode&);
40 ~DestructiveFileSource ();
42 nframes_t last_capture_start_frame() const;
43 void mark_capture_start (nframes_t);
44 void mark_capture_end ();
45 void clear_capture_marks();
47 XMLNode& get_state ();
49 static void setup_standard_crossfades (nframes_t sample_rate);
51 int read_peaks (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_unit) const;
54 nframes_t write_unlocked (Sample *src, nframes_t cnt);
56 virtual void handle_header_position_change ();
59 static nframes_t xfade_frames;
60 static gain_t* out_coefficient;
61 static gain_t* in_coefficient;
65 nframes_t capture_start_frame;
66 nframes_t file_pos; // unit is frames
70 nframes_t crossfade (Sample* data, nframes_t cnt, int dir);
71 void set_timeline_position (int64_t);
76 #endif /* __ardour_destructive_file_source_h__ */