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 "ardour/progress.h"
31 class LIBARDOUR_API 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, const std::string& origin,
38 SampleFormat samp_format, HeaderFormat hdr_format, samplecnt_t rate,
39 Flag flags = SndFileSource::default_writable_flags);
41 /* Constructor to be called for recovering files being used for
42 * capture. They are in-session, they already exist, they should not
43 * be writable. They are an odd hybrid (from a constructor point of
44 * view) of the previous two constructors.
46 SndFileSource (Session&, const std::string& path, int chn);
48 /** Constructor to be called for existing in-session files during
51 SndFileSource (Session&, const XMLNode&);
53 /** Constructor to losslessly compress existing source */
54 SndFileSource (Session& s, const AudioFileSource& other, const std::string& path, bool use16bits = false, Progress* p = NULL);
58 float sample_rate () const;
59 int update_header (samplepos_t when, struct tm&, time_t);
63 samplepos_t natural_position () const;
65 samplepos_t last_capture_start_sample() const;
66 void mark_capture_start (samplepos_t);
67 void mark_capture_end ();
68 void clear_capture_marks();
70 bool one_of_several_channels () const;
71 uint32_t channel_count () const { return _info.channels; }
73 bool clamped_at_unity () const;
75 static void setup_standard_crossfades (Session const &, samplecnt_t sample_rate);
76 static const Source::Flag default_writable_flags;
78 static int get_soundfile_info (const std::string& path, SoundFileInfo& _info, std::string& error_msg);
83 void set_path (const std::string& p);
84 void set_header_timeline_position ();
86 samplecnt_t read_unlocked (Sample *dst, samplepos_t start, samplecnt_t cnt) const;
87 samplecnt_t write_unlocked (Sample *dst, samplecnt_t cnt);
88 samplecnt_t write_float (Sample* data, samplepos_t pos, samplecnt_t cnt);
93 BroadcastInfo *_broadcast_info;
97 int setup_broadcast_info (samplepos_t when, struct tm&, time_t);
102 static samplecnt_t xfade_samples;
103 static gain_t* out_coefficient;
104 static gain_t* in_coefficient;
108 samplepos_t capture_start_sample;
109 samplepos_t file_pos; // unit is samples
112 samplecnt_t crossfade (Sample* data, samplecnt_t cnt, int dir);
113 void set_timeline_position (samplepos_t);
114 samplecnt_t destructive_write_unlocked (Sample *dst, samplecnt_t cnt);
115 samplecnt_t nondestructive_write_unlocked (Sample *dst, samplecnt_t cnt);
116 void handle_header_position_change ();
117 PBD::ScopedConnection header_position_connection;
120 } // namespace ARDOUR
122 #endif /* __sndfile_source_h__ */