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.
20 #ifndef __sndfile_source_h__
21 #define __sndfile_source_h__
25 #include "ardour/audiofilesource.h"
26 #include "ardour/broadcast_info.h"
27 #include "pbd/sndfile_manager.h"
31 class SndFileSource : public AudioFileSource {
33 /** Constructor to be called for existing external-to-session files */
34 SndFileSource (Session&, const std::string& path, int chn, Flag flags);
36 /* Constructor to be called for new in-session files */
37 SndFileSource (Session&, const std::string& path,
38 SampleFormat samp_format, HeaderFormat hdr_format, nframes_t rate,
39 Flag flags = SndFileSource::default_writable_flags);
41 /** Constructor to be called for existing in-session files */
42 SndFileSource (Session&, const XMLNode&);
46 float sample_rate () const;
47 int update_header (framepos_t when, struct tm&, time_t);
50 framepos_t natural_position () const;
52 framepos_t last_capture_start_frame() const;
53 void mark_capture_start (framepos_t);
54 void mark_capture_end ();
55 void clear_capture_marks();
57 bool set_destructive (bool yn);
59 bool one_of_several_channels () const;
61 bool clamped_at_unity () const;
63 static void setup_standard_crossfades (Session const &, nframes_t sample_rate);
64 static const Source::Flag default_writable_flags;
66 static int get_soundfile_info (const std::string& path, SoundFileInfo& _info, std::string& error_msg);
69 void set_path (const std::string& p);
70 void set_header_timeline_position ();
72 framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const;
73 framecnt_t write_unlocked (Sample *dst, framecnt_t cnt);
74 framecnt_t write_float (Sample* data, framepos_t pos, framecnt_t cnt);
77 PBD::SndFileDescriptor* _descriptor;
79 BroadcastInfo *_broadcast_info;
83 int setup_broadcast_info (framepos_t when, struct tm&, time_t);
88 static framecnt_t xfade_frames;
89 static gain_t* out_coefficient;
90 static gain_t* in_coefficient;
94 framepos_t capture_start_frame;
95 framepos_t file_pos; // unit is frames
96 framecnt_t xfade_out_count;
97 framecnt_t xfade_in_count;
100 framecnt_t crossfade (Sample* data, framecnt_t cnt, int dir);
101 void set_timeline_position (framepos_t);
102 framecnt_t destructive_write_unlocked (Sample *dst, framecnt_t cnt);
103 framecnt_t nondestructive_write_unlocked (Sample *dst, framecnt_t cnt);
104 void handle_header_position_change ();
105 PBD::ScopedConnection header_position_connection;
106 PBD::ScopedConnection file_manager_connection;
109 } // namespace ARDOUR
111 #endif /* __sndfile_source_h__ */