2 Copyright (C) 2000-2006 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 __ardour_audio_region_h__
21 #define __ardour_audio_region_h__
26 #include "pbd/fastlog.h"
29 #include "ardour/ardour.h"
30 #include "ardour/automatable_controls.h"
31 #include "ardour/gain.h"
32 #include "ardour/logcurve.h"
33 #include "ardour/region.h"
40 namespace Properties {
41 extern PBD::PropertyDescriptor<bool> envelope_active;
42 extern PBD::PropertyDescriptor<bool> default_fade_in;
43 extern PBD::PropertyDescriptor<bool> default_fade_out;
44 extern PBD::PropertyDescriptor<bool> fade_in_active;
45 extern PBD::PropertyDescriptor<bool> fade_out_active;
46 extern PBD::PropertyDescriptor<float> scale_amplitude;
47 extern PBD::PropertyDescriptor<float> scale_amplitude;
49 /* the envelope and fades are not scalar items and so
50 currently (2010/02) are not stored using Property.
51 However, these descriptors enable us to notify
52 about changes to them via PropertyChange.
55 extern PBD::PropertyDescriptor<bool> envelope;
56 extern PBD::PropertyDescriptor<bool> fade_in;
57 extern PBD::PropertyDescriptor<bool> fade_out;
67 class AudioRegion : public Region
70 static void make_property_quarks ();
74 void copy_settings (boost::shared_ptr<const AudioRegion>);
76 bool source_equivalent (boost::shared_ptr<const Region>) const;
78 bool speed_mismatch (float) const;
80 boost::shared_ptr<AudioSource> audio_source (uint32_t n=0) const;
82 void set_scale_amplitude (gain_t);
83 gain_t scale_amplitude() const { return _scale_amplitude; }
85 void normalize_to (float target_in_dB = 0.0f);
87 bool envelope_active () const { return _envelope_active; }
88 bool fade_in_active () const { return _fade_in_active; }
89 bool fade_out_active () const { return _fade_out_active; }
91 boost::shared_ptr<AutomationList> fade_in() { return _fade_in; }
92 boost::shared_ptr<AutomationList> fade_out() { return _fade_out; }
93 boost::shared_ptr<AutomationList> envelope() { return _envelope; }
95 virtual nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
96 nframes_t offset, nframes_t cnt,
97 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
99 /* Readable interface */
103 ReadOpsOwnAutomation = 0x1,
104 ReadOpsOwnScaling = 0x2,
109 virtual framecnt_t read (Sample*, framepos_t pos, framecnt_t cnt, int channel) const;
110 virtual framecnt_t read_with_ops (Sample*, framepos_t pos, framecnt_t cnt, int channel, ReadOps rops) const;
111 virtual framecnt_t readable_length() const { return length(); }
113 virtual framecnt_t read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
117 framecnt_t read_frames = 0,
118 framecnt_t skip_frames = 0) const;
120 virtual framecnt_t master_read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
121 framepos_t position, framecnt_t cnt, uint32_t chan_n=0) const;
123 virtual framecnt_t read_raw_internal (Sample*, framepos_t, framecnt_t, int channel) const;
125 XMLNode& state (bool);
126 int set_state (const XMLNode&, int version);
128 static void set_default_fade (float steepness, framecnt_t len);
129 bool fade_in_is_default () const;
130 bool fade_out_is_default () const;
140 void set_fade_in_active (bool yn);
141 void set_fade_in_shape (FadeShape);
142 void set_fade_in_length (framecnt_t);
143 void set_fade_in (FadeShape, framecnt_t);
144 void set_fade_in (boost::shared_ptr<AutomationList>);
146 void set_fade_out_active (bool yn);
147 void set_fade_out_shape (FadeShape);
148 void set_fade_out_length (framecnt_t);
149 void set_fade_out (FadeShape, framecnt_t);
150 void set_fade_out (boost::shared_ptr<AutomationList>);
152 void set_envelope_active (bool yn);
153 void set_default_envelope ();
155 int separate_by_channel (ARDOUR::Session&, std::vector<boost::shared_ptr<Region> >&) const;
159 boost::shared_ptr<Evoral::Control>
160 control(const Evoral::Parameter& id, bool create=false) {
161 return _automatable.control(id, create);
164 virtual boost::shared_ptr<const Evoral::Control>
165 control(const Evoral::Parameter& id) const {
166 return _automatable.control(id);
171 int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
173 /* xfade/fade interactions */
175 void suspend_fade_in ();
176 void suspend_fade_out ();
177 void resume_fade_in ();
178 void resume_fade_out ();
180 int get_transients (AnalysisFeatureList&, bool force_new = false);
181 std::list<std::pair<frameoffset_t, framecnt_t> > find_silence (Sample, framecnt_t, InterThreadInfo&) const;
184 friend class RegionFactory;
185 friend class Crossfade;
187 AudioRegion (boost::shared_ptr<AudioSource>);
188 AudioRegion (const SourceList &);
189 AudioRegion (boost::shared_ptr<const AudioRegion>, frameoffset_t offset = 0, bool offset_relative = true);
190 AudioRegion (boost::shared_ptr<const AudioRegion>, const SourceList&);
191 AudioRegion (SourceList &);
194 PBD::Property<bool> _envelope_active;
195 PBD::Property<bool> _default_fade_in;
196 PBD::Property<bool> _default_fade_out;
197 PBD::Property<bool> _fade_in_active;
198 PBD::Property<bool> _fade_out_active;
199 PBD::Property<gain_t> _scale_amplitude;
201 void register_properties ();
205 void set_default_fades ();
206 void set_default_fade_in ();
207 void set_default_fade_out ();
209 void recompute_gain_at_end ();
210 void recompute_gain_at_start ();
212 framecnt_t _read_at (const SourceList&, framecnt_t limit,
213 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
214 framepos_t position, framecnt_t cnt,
216 framecnt_t read_frames = 0,
217 framecnt_t skip_frames = 0,
218 ReadOps readops = ReadOps (~0)) const;
220 void recompute_at_start ();
221 void recompute_at_end ();
223 void envelope_changed ();
224 void fade_in_changed ();
225 void fade_out_changed ();
226 void source_offset_changed ();
227 void listen_to_my_curves ();
228 void connect_to_analysis_changed ();
229 void connect_to_header_position_offset_changed ();
231 AutomatableControls _automatable;
233 boost::shared_ptr<AutomationList> _fade_in;
234 boost::shared_ptr<AutomationList> _fade_out;
235 boost::shared_ptr<AutomationList> _envelope;
236 uint32_t _fade_in_suspended;
237 uint32_t _fade_out_suspended;
240 /* default constructor for derived (compound) types */
242 AudioRegion (Session& s, framepos_t, framecnt_t, std::string name);
244 int _set_state (const XMLNode&, int version, PBD::PropertyChange& what_changed, bool send_signal);
247 } /* namespace ARDOUR */
249 /* access from C objects */
252 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);
253 uint32_t region_length_from_c (void *arg);
254 uint32_t sourcefile_length_from_c (void *arg, double);
257 #endif /* __ardour_audio_region_h__ */