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 SndFileSource : public AudioFileSource {
32 /* constructor to be called for existing external-to-session files */
34 SndFileSource (Session&, Glib::ustring path, int chn, Flag flags);
36 /* constructor to be called for new in-session files */
38 SndFileSource (Session&, Glib::ustring path, 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 */
43 SndFileSource (Session&, const XMLNode&);
47 float sample_rate () const;
48 int update_header (nframes_t when, struct tm&, time_t);
51 nframes_t natural_position () const;
53 nframes_t last_capture_start_frame() const;
54 void mark_capture_start (nframes_t);
55 void mark_capture_end ();
56 void clear_capture_marks();
58 bool set_destructive (bool yn);
60 bool one_of_several_channels () const;
62 static void setup_standard_crossfades (nframes_t sample_rate);
63 static const AudioFileSource::Flag default_writable_flags;
65 static int get_soundfile_info (const Glib::ustring& path, SoundFileInfo& _info, string& error_msg);
68 void set_header_timeline_position ();
70 nframes_t read_unlocked (Sample *dst, nframes_t start, nframes_t cnt) const;
71 nframes_t write_unlocked (Sample *dst, nframes_t cnt);
73 nframes_t write_float (Sample* data, nframes_t pos, nframes_t cnt);
78 BroadcastInfo *_broadcast_info;
82 int setup_broadcast_info (nframes_t when, struct tm&, time_t);
86 static nframes_t xfade_frames;
87 static gain_t* out_coefficient;
88 static gain_t* in_coefficient;
92 nframes_t capture_start_frame;
93 nframes_t file_pos; // unit is frames
94 nframes_t xfade_out_count;
95 nframes_t xfade_in_count;
98 nframes_t crossfade (Sample* data, nframes_t cnt, int dir);
99 void set_timeline_position (int64_t);
100 nframes_t destructive_write_unlocked (Sample *dst, nframes_t cnt);
101 nframes_t nondestructive_write_unlocked (Sample *dst, nframes_t cnt);
102 void handle_header_position_change ();
105 } // namespace ARDOUR
107 #endif /* __sndfile_source_h__ */