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"
30 class LIBARDOUR_API SndFileSource : public AudioFileSource {
32 /** Constructor to be called for existing external-to-session files */
33 SndFileSource (Session&, const std::string& path, int chn, Flag flags);
35 /* Constructor to be called for new in-session files */
36 SndFileSource (Session&, const std::string& path, const std::string& origin,
37 SampleFormat samp_format, HeaderFormat hdr_format, framecnt_t rate,
38 Flag flags = SndFileSource::default_writable_flags);
40 /* Constructor to be called for recovering files being used for
41 * capture. They are in-session, they already exist, they should not
42 * be writable. They are an odd hybrid (from a constructor point of
43 * view) of the previous two constructors.
45 SndFileSource (Session&, const std::string& path, int chn);
47 /** Constructor to be called for existing in-session files during
50 SndFileSource (Session&, const XMLNode&);
54 float sample_rate () const;
55 int update_header (framepos_t when, struct tm&, time_t);
59 framepos_t natural_position () const;
61 framepos_t last_capture_start_frame() const;
62 void mark_capture_start (framepos_t);
63 void mark_capture_end ();
64 void clear_capture_marks();
66 bool set_destructive (bool yn);
68 bool one_of_several_channels () const;
70 bool clamped_at_unity () const;
72 static void setup_standard_crossfades (Session const &, framecnt_t sample_rate);
73 static const Source::Flag default_writable_flags;
75 static int get_soundfile_info (const std::string& path, SoundFileInfo& _info, std::string& error_msg);
80 void set_path (const std::string& p);
81 void set_header_timeline_position ();
83 framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const;
84 framecnt_t write_unlocked (Sample *dst, framecnt_t cnt);
85 framecnt_t write_float (Sample* data, framepos_t pos, framecnt_t cnt);
90 BroadcastInfo *_broadcast_info;
94 int setup_broadcast_info (framepos_t when, struct tm&, time_t);
99 static framecnt_t xfade_frames;
100 static gain_t* out_coefficient;
101 static gain_t* in_coefficient;
105 framepos_t capture_start_frame;
106 framepos_t file_pos; // unit is frames
109 framecnt_t crossfade (Sample* data, framecnt_t cnt, int dir);
110 void set_timeline_position (framepos_t);
111 framecnt_t destructive_write_unlocked (Sample *dst, framecnt_t cnt);
112 framecnt_t nondestructive_write_unlocked (Sample *dst, framecnt_t cnt);
113 void handle_header_position_change ();
114 PBD::ScopedConnection header_position_connection;
117 } // namespace ARDOUR
119 #endif /* __sndfile_source_h__ */