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 */
33 SndFileSource (Session&, const Glib::ustring& path, int chn, Flag flags);
35 /* Constructor to be called for new in-session files */
36 SndFileSource (Session&, const Glib::ustring& path,
37 SampleFormat samp_format, HeaderFormat hdr_format, nframes_t rate,
38 Flag flags = SndFileSource::default_writable_flags);
40 /** Constructor to be called for existing in-session files */
41 SndFileSource (Session&, const XMLNode&);
45 float sample_rate () const;
46 int update_header (sframes_t when, struct tm&, time_t);
49 nframes64_t natural_position () const;
51 sframes_t last_capture_start_frame() const;
52 void mark_capture_start (sframes_t);
53 void mark_capture_end ();
54 void clear_capture_marks();
56 bool set_destructive (bool yn);
58 bool one_of_several_channels () const;
60 static void setup_standard_crossfades (Session const &, nframes_t sample_rate);
61 static const Source::Flag default_writable_flags;
63 static int get_soundfile_info (const Glib::ustring& path, SoundFileInfo& _info, std::string& error_msg);
66 void set_header_timeline_position ();
68 nframes_t read_unlocked (Sample *dst, sframes_t start, nframes_t cnt) const;
69 nframes_t write_unlocked (Sample *dst, nframes_t cnt);
71 nframes_t write_float (Sample* data, sframes_t pos, nframes_t cnt);
76 BroadcastInfo *_broadcast_info;
80 int setup_broadcast_info (sframes_t when, struct tm&, time_t);
84 static nframes_t xfade_frames;
85 static gain_t* out_coefficient;
86 static gain_t* in_coefficient;
90 sframes_t capture_start_frame;
91 sframes_t file_pos; // unit is frames
92 nframes_t xfade_out_count;
93 nframes_t xfade_in_count;
96 nframes_t crossfade (Sample* data, nframes_t cnt, int dir);
97 void set_timeline_position (int64_t);
98 nframes_t destructive_write_unlocked (Sample *dst, nframes_t cnt);
99 nframes_t nondestructive_write_unlocked (Sample *dst, nframes_t cnt);
100 void handle_header_position_change ();
101 PBD::ScopedConnection header_position_connection;
104 } // namespace ARDOUR
106 #endif /* __sndfile_source_h__ */