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.h"
31 #include "ardour/automation_list.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;
48 /* the envelope and fades are not scalar items and so
49 currently (2010/02) are not stored using Property.
50 However, these descriptors enable us to notify
51 about changes to them via PropertyChange.
54 extern PBD::PropertyDescriptor<bool> envelope;
55 extern PBD::PropertyDescriptor<bool> fade_in;
56 extern PBD::PropertyDescriptor<bool> fade_out;
65 class AudioRegion : public Region
68 static void make_property_quarks ();
72 void copy_settings (boost::shared_ptr<const AudioRegion>);
74 bool source_equivalent (boost::shared_ptr<const Region>) const;
76 bool speed_mismatch (float) const;
78 boost::shared_ptr<AudioSource> audio_source (uint32_t n=0) const;
80 void set_scale_amplitude (gain_t);
81 gain_t scale_amplitude() const { return _scale_amplitude; }
83 void normalize (float, float target_in_dB = 0.0f);
84 double maximum_amplitude (Progress* p = 0) const;
86 bool envelope_active () const { return _envelope_active; }
87 bool fade_in_active () const { return _fade_in_active; }
88 bool fade_out_active () const { return _fade_out_active; }
90 boost::shared_ptr<AutomationList> fade_in() { return _fade_in; }
91 boost::shared_ptr<AutomationList> fade_out() { return _fade_out; }
92 boost::shared_ptr<AutomationList> envelope() { return _envelope; }
94 virtual framecnt_t read_peaks (PeakData *buf, framecnt_t npeaks,
95 framecnt_t offset, framecnt_t cnt,
96 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
98 /* Readable interface */
102 ReadOpsOwnAutomation = 0x1,
103 ReadOpsOwnScaling = 0x2,
107 virtual framecnt_t read (Sample*, framepos_t pos, framecnt_t cnt, int channel) const;
108 virtual framecnt_t readable_length() const { return length(); }
110 virtual framecnt_t read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
113 uint32_t chan_n = 0) const;
115 virtual framecnt_t master_read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
116 framepos_t position, framecnt_t cnt, uint32_t chan_n=0) const;
118 virtual framecnt_t read_raw_internal (Sample*, framepos_t, framecnt_t, int channel) const;
121 int set_state (const XMLNode&, int version);
123 static void set_default_fade (float steepness, framecnt_t len);
124 bool fade_in_is_default () const;
125 bool fade_out_is_default () const;
127 void set_fade_in_active (bool yn);
128 void set_fade_in_shape (FadeShape);
129 void set_fade_in_length (framecnt_t);
130 void set_fade_in (FadeShape, framecnt_t);
131 void set_fade_in (boost::shared_ptr<AutomationList>);
133 void set_fade_out_active (bool yn);
134 void set_fade_out_shape (FadeShape);
135 void set_fade_out_length (framecnt_t);
136 void set_fade_out (FadeShape, framecnt_t);
137 void set_fade_out (boost::shared_ptr<AutomationList>);
139 void set_envelope_active (bool yn);
140 void set_default_envelope ();
142 int separate_by_channel (ARDOUR::Session&, std::vector<boost::shared_ptr<Region> >&) const;
146 boost::shared_ptr<Evoral::Control>
147 control(const Evoral::Parameter& id, bool create=false) {
148 return _automatable.control(id, create);
151 virtual boost::shared_ptr<const Evoral::Control>
152 control(const Evoral::Parameter& id) const {
153 return _automatable.control(id);
156 /* xfade/fade interactions */
158 void suspend_fade_in ();
159 void suspend_fade_out ();
160 void resume_fade_in ();
161 void resume_fade_out ();
163 void add_transient (framepos_t where);
164 void remove_transient (framepos_t where);
165 int set_transients (AnalysisFeatureList&);
166 int get_transients (AnalysisFeatureList&, bool force_new = false);
167 int update_transient (framepos_t old_position, framepos_t new_position);
168 int adjust_transients (framepos_t delta);
170 AudioIntervalResult find_silence (Sample, framecnt_t, InterThreadInfo&) const;
173 friend class RegionFactory;
174 friend class Crossfade;
176 AudioRegion (boost::shared_ptr<AudioSource>);
177 AudioRegion (const SourceList &);
178 AudioRegion (boost::shared_ptr<const AudioRegion>);
179 AudioRegion (boost::shared_ptr<const AudioRegion>, frameoffset_t offset);
180 AudioRegion (boost::shared_ptr<const AudioRegion>, const SourceList&);
181 AudioRegion (SourceList &);
184 PBD::Property<bool> _envelope_active;
185 PBD::Property<bool> _default_fade_in;
186 PBD::Property<bool> _default_fade_out;
187 PBD::Property<bool> _fade_in_active;
188 PBD::Property<bool> _fade_out_active;
189 /** linear gain to apply to the whole region */
190 PBD::Property<gain_t> _scale_amplitude;
192 void register_properties ();
193 void post_set (const PBD::PropertyChange&);
196 void set_default_fades ();
197 void set_default_fade_in ();
198 void set_default_fade_out ();
200 void recompute_gain_at_end ();
201 void recompute_gain_at_start ();
203 framecnt_t _read_at (const SourceList&, framecnt_t limit,
204 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
205 framepos_t position, framecnt_t cnt,
207 ReadOps readops = ReadOps (~0)) const;
209 void recompute_at_start ();
210 void recompute_at_end ();
212 void envelope_changed ();
213 void fade_in_changed ();
214 void fade_out_changed ();
215 void source_offset_changed ();
216 void listen_to_my_curves ();
217 void connect_to_analysis_changed ();
218 void connect_to_header_position_offset_changed ();
220 Automatable _automatable;
222 boost::shared_ptr<AutomationList> _fade_in;
223 boost::shared_ptr<AutomationList> _fade_out;
224 boost::shared_ptr<AutomationList> _envelope;
225 uint32_t _fade_in_suspended;
226 uint32_t _fade_out_suspended;
229 /* default constructor for derived (compound) types */
231 AudioRegion (Session& s, framepos_t, framecnt_t, std::string name);
233 int _set_state (const XMLNode&, int version, PBD::PropertyChange& what_changed, bool send_signal);
236 } /* namespace ARDOUR */
238 /* access from C objects */
241 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);
242 uint32_t region_length_from_c (void *arg);
243 uint32_t sourcefile_length_from_c (void *arg, double);
246 #endif /* __ardour_audio_region_h__ */