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"
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 void copy_settings (boost::shared_ptr<const AudioRegion>);
60 bool source_equivalent (boost::shared_ptr<const Region>) const;
62 bool speed_mismatch (float) const;
64 boost::shared_ptr<AudioSource> audio_source (uint32_t n=0) const;
66 void set_scale_amplitude (gain_t);
67 gain_t scale_amplitude() const { return _scale_amplitude; }
69 void normalize_to (float target_in_dB = 0.0f);
71 bool envelope_active () const { return _flags & Region::EnvelopeActive; }
72 bool fade_in_active () const { return _flags & Region::FadeIn; }
73 bool fade_out_active () const { return _flags & Region::FadeOut; }
75 boost::shared_ptr<AutomationList> fade_in() { return _fade_in; }
76 boost::shared_ptr<AutomationList> fade_out() { return _fade_out; }
77 boost::shared_ptr<AutomationList> envelope() { return _envelope; }
79 virtual nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
80 nframes_t offset, nframes_t cnt,
81 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
83 /* Readable interface */
87 ReadOpsOwnAutomation = 0x1,
88 ReadOpsOwnScaling = 0x2,
93 virtual nframes_t read (Sample*, sframes_t pos, nframes_t cnt, int channel) const;
94 virtual nframes_t read_with_ops (Sample*, sframes_t pos, nframes_t cnt, int channel, ReadOps rops) const;
95 virtual nframes64_t readable_length() const { return length(); }
97 virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
101 nframes_t read_frames = 0,
102 nframes_t skip_frames = 0) const;
104 virtual nframes_t master_read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
105 sframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
107 virtual nframes_t read_raw_internal (Sample*, sframes_t, nframes_t, int channel) const;
109 XMLNode& state (bool);
110 int set_state (const XMLNode&, int version);
112 static void set_default_fade (float steepness, nframes_t len);
113 bool fade_in_is_default () const;
114 bool fade_out_is_default () const;
124 void set_fade_in_active (bool yn);
125 void set_fade_in_shape (FadeShape);
126 void set_fade_in_length (nframes_t);
127 void set_fade_in (FadeShape, nframes_t);
129 void set_fade_out_active (bool yn);
130 void set_fade_out_shape (FadeShape);
131 void set_fade_out_length (nframes_t);
132 void set_fade_out (FadeShape, nframes_t);
134 void set_envelope_active (bool yn);
135 void set_default_envelope ();
137 int separate_by_channel (ARDOUR::Session&, std::vector<boost::shared_ptr<Region> >&) const;
141 boost::shared_ptr<Evoral::Control>
142 control(const Evoral::Parameter& id, bool create=false) {
143 return _automatable.data().control(id, create);
146 virtual boost::shared_ptr<const Evoral::Control>
147 control(const Evoral::Parameter& id) const {
148 return _automatable.data().control(id);
153 int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
155 /* xfade/fade interactions */
157 void suspend_fade_in ();
158 void suspend_fade_out ();
159 void resume_fade_in ();
160 void resume_fade_out ();
162 int get_transients (AnalysisFeatureList&, bool force_new = false);
163 std::list<std::pair<nframes_t, nframes_t> > find_silence (Sample, nframes_t) const;
166 friend class RegionFactory;
167 friend class Crossfade;
169 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
170 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
171 AudioRegion (const SourceList &, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
172 AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
173 AudioRegion (boost::shared_ptr<const AudioRegion>, const SourceList&, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
174 AudioRegion (boost::shared_ptr<const AudioRegion>);
175 AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
176 AudioRegion (SourceList &, const XMLNode&);
180 void set_default_fades ();
181 void set_default_fade_in ();
182 void set_default_fade_out ();
184 void recompute_gain_at_end ();
185 void recompute_gain_at_start ();
187 nframes_t _read_at (const SourceList&, nframes_t limit,
188 Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
189 sframes_t position, nframes_t cnt,
191 nframes_t read_frames = 0,
192 nframes_t skip_frames = 0,
193 ReadOps readops = ReadOps (~0)) const;
195 void recompute_at_start ();
196 void recompute_at_end ();
198 void envelope_changed ();
199 void fade_in_changed ();
200 void fade_out_changed ();
201 void source_offset_changed ();
202 void listen_to_my_curves ();
203 void connect_to_analysis_changed ();
204 void connect_to_header_position_offset_changed ();
206 AutomatableControls _automatable;
208 boost::shared_ptr<AutomationList> _fade_in;
209 FadeShape _fade_in_shape;
210 boost::shared_ptr<AutomationList> _fade_out;
211 FadeShape _fade_out_shape;
212 boost::shared_ptr<AutomationList> _envelope;
213 gain_t _scale_amplitude;
214 uint32_t _fade_in_disabled;
215 uint32_t _fade_out_disabled;
218 /* default constructor for derived (compound) types */
220 AudioRegion (Session& s, nframes_t, nframes_t, std::string name);
222 int set_live_state (const XMLNode&, int version, Change&, bool send);
225 } /* namespace ARDOUR */
227 /* access from C objects */
230 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);
231 uint32_t region_length_from_c (void *arg);
232 uint32_t sourcefile_length_from_c (void *arg, double);
235 #endif /* __ardour_audio_region_h__ */