2 Copyright (C) 2000-2001 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.
21 #ifndef __ardour_audio_region_h__
22 #define __ardour_audio_region_h__
26 #include <pbd/fastlog.h>
29 #include <ardour/ardour.h>
30 #include <ardour/region.h>
31 #include <ardour/gain.h>
32 #include <ardour/logcurve.h>
33 #include <ardour/export.h>
45 class AudioRegion : public Region
48 static Change FadeInChanged;
49 static Change FadeOutChanged;
50 static Change FadeInActiveChanged;
51 static Change FadeOutActiveChanged;
52 static Change EnvelopeActiveChanged;
53 static Change ScaleAmplitudeChanged;
54 static Change EnvelopeChanged;
58 bool source_equivalent (boost::shared_ptr<const Region>) const;
60 bool speed_mismatch (float) const;
62 boost::shared_ptr<AudioSource> source (uint32_t n=0) const { if (n < sources.size()) return sources[n]; else return sources[0]; }
64 void set_scale_amplitude (gain_t);
65 gain_t scale_amplitude() const { return _scale_amplitude; }
67 void normalize_to (float target_in_dB = 0.0f);
69 uint32_t n_channels() { return sources.size(); }
70 vector<string> master_source_names();
72 bool envelope_active () const { return _flags & Region::EnvelopeActive; }
73 bool fade_in_active () const { return _flags & Region::FadeIn; }
74 bool fade_out_active () const { return _flags & Region::FadeOut; }
75 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
77 Curve& fade_in() { return _fade_in; }
78 Curve& fade_out() { return _fade_out; }
79 Curve& envelope() { return _envelope; }
81 nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
82 nframes_t offset, nframes_t cnt,
83 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
85 virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf,
86 float *gain_buf, nframes_t position, nframes_t cnt,
88 nframes_t read_frames = 0,
89 nframes_t skip_frames = 0) const;
91 nframes_t master_read_at (Sample *buf, Sample *mixdown_buf,
93 nframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
95 XMLNode& state (bool);
96 int set_state (const XMLNode&);
98 static void set_default_fade (float steepness, nframes_t len);
108 void set_fade_in_active (bool yn);
109 void set_fade_in_shape (FadeShape);
110 void set_fade_in_length (nframes_t);
111 void set_fade_in (FadeShape, nframes_t);
113 void set_fade_out_active (bool yn);
114 void set_fade_out_shape (FadeShape);
115 void set_fade_out_length (nframes_t);
116 void set_fade_out (FadeShape, nframes_t);
118 void set_envelope_active (bool yn);
120 int separate_by_channel (ARDOUR::Session&, vector<AudioRegion*>&) const;
124 int apply (AudioFilter&);
128 int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
130 boost::shared_ptr<Region> get_parent();
132 /* xfade/fade interactions */
134 void suspend_fade_in ();
135 void suspend_fade_out ();
136 void resume_fade_in ();
137 void resume_fade_out ();
140 friend class RegionFactory;
142 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
143 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
144 AudioRegion (SourceList &, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
145 AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
146 AudioRegion (boost::shared_ptr<const AudioRegion>);
147 AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
148 AudioRegion (SourceList &, const XMLNode&);
151 void set_default_fades ();
152 void set_default_fade_in ();
153 void set_default_fade_out ();
154 void set_default_envelope ();
156 void recompute_gain_at_end ();
157 void recompute_gain_at_start ();
159 nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
160 float *gain_buffer, nframes_t position, nframes_t cnt,
162 nframes_t read_frames = 0,
163 nframes_t skip_frames = 0) const;
165 bool verify_start (nframes_t position);
166 bool verify_length (nframes_t position);
167 bool verify_start_mutable (nframes_t& start);
168 bool verify_start_and_length (nframes_t start, nframes_t length);
169 void recompute_at_start ();
170 void recompute_at_end ();
172 void envelope_changed (Change);
173 void source_offset_changed ();
175 void source_deleted ();
179 /** Used when timefx are applied, so we can always use the original source. */
180 SourceList master_sources;
182 mutable Curve _fade_in;
183 FadeShape _fade_in_shape;
184 mutable Curve _fade_out;
185 FadeShape _fade_out_shape;
186 mutable Curve _envelope;
187 gain_t _scale_amplitude;
188 uint32_t _fade_in_disabled;
189 uint32_t _fade_out_disabled;
192 int set_live_state (const XMLNode&, Change&, bool send);
195 } /* namespace ARDOUR */
197 /* access from C objects */
200 int region_read_peaks_from_c (void *arg, uint32_t npeaks, uint32_t start, uint32_t length, intptr_t data, uint32_t n_chan, double samples_per_unit);
201 uint32_t region_length_from_c (void *arg);
202 uint32_t sourcefile_length_from_c (void *arg, double);
205 #endif /* __ardour_audio_region_h__ */