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/gain.h>
31 #include <ardour/region.h>
32 #include <ardour/export.h>
44 struct AudioRegionState : public RegionState
46 AudioRegionState (std::string why);
51 gain_t _scale_amplitude;
52 uint32_t _fade_in_disabled;
53 uint32_t _fade_out_disabled;
56 class AudioRegion : public Region
59 typedef vector<AudioSource *> SourceList;
61 static Change FadeInChanged;
62 static Change FadeOutChanged;
63 static Change FadeInActiveChanged;
64 static Change FadeOutActiveChanged;
65 static Change EnvelopeActiveChanged;
66 static Change ScaleAmplitudeChanged;
67 static Change EnvelopeChanged;
69 AudioRegion (AudioSource&, jack_nframes_t start, jack_nframes_t length, bool announce = true);
70 AudioRegion (AudioSource&, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags, bool announce = true);
71 AudioRegion (SourceList &, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags, bool announce = true);
72 AudioRegion (const AudioRegion&, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags, bool announce = true);
73 AudioRegion (const AudioRegion&);
74 AudioRegion (AudioSource&, const XMLNode&);
75 AudioRegion (SourceList &, const XMLNode&);
78 bool source_equivalent (const Region&) const;
80 bool speed_mismatch (float) const;
83 void unlock_sources ();
84 AudioSource& source (uint32_t n=0) const { if (n < sources.size()) return *sources[n]; else return *sources[0]; }
86 void set_scale_amplitude (gain_t);
87 gain_t scale_amplitude() const { return _scale_amplitude; }
89 void normalize_to (float target_in_dB = 0.0f);
91 uint32_t n_channels() { return sources.size(); }
92 vector<string> master_source_names();
94 bool envelope_active () const { return _flags & Region::EnvelopeActive; }
95 bool fade_in_active () const { return _flags & Region::FadeIn; }
96 bool fade_out_active () const { return _flags & Region::FadeOut; }
97 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
99 Curve& fade_in() { return _fade_in; }
100 Curve& fade_out() { return _fade_out; }
101 Curve& envelope() { return _envelope; }
103 jack_nframes_t read_peaks (PeakData *buf, jack_nframes_t npeaks, jack_nframes_t offset, jack_nframes_t cnt, uint32_t chan_n=0, double samples_per_unit= 1.0) const;
105 virtual jack_nframes_t read_at (Sample *buf, Sample *mixdown_buffer,
106 float *gain_buffer, char * workbuf, jack_nframes_t position, jack_nframes_t cnt,
108 jack_nframes_t read_frames = 0,
109 jack_nframes_t skip_frames = 0) const;
111 jack_nframes_t master_read_at (Sample *buf, Sample *mixdown_buffer,
112 float *gain_buffer, char * workbuf, jack_nframes_t position, jack_nframes_t cnt, uint32_t chan_n=0) const;
115 XMLNode& state (bool);
116 XMLNode& get_state ();
117 int set_state (const XMLNode&);
119 static void set_default_fade (float steepness, jack_nframes_t len);
129 void set_fade_in_active (bool yn);
130 void set_fade_in_shape (FadeShape);
131 void set_fade_in_length (jack_nframes_t);
132 void set_fade_in (FadeShape, jack_nframes_t);
134 void set_fade_out_active (bool yn);
135 void set_fade_out_shape (FadeShape);
136 void set_fade_out_length (jack_nframes_t);
137 void set_fade_out (FadeShape, jack_nframes_t);
139 void set_envelope_active (bool yn);
141 int separate_by_channel (ARDOUR::Session&, vector<AudioRegion*>&) const;
143 uint32_t read_data_count() const { return _read_data_count; }
145 ARDOUR::Playlist* playlist() const { return _playlist; }
147 UndoAction get_memento() const;
151 int apply (AudioFilter&);
155 int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
157 Region* get_parent();
159 /* xfade/fade interactions */
161 void suspend_fade_in ();
162 void suspend_fade_out ();
163 void resume_fade_in ();
164 void resume_fade_out ();
167 friend class Playlist;
171 SourceList master_sources; /* used when timefx are applied, so
172 we can always use the original
175 mutable Curve _fade_in;
176 FadeShape _fade_in_shape;
177 mutable Curve _fade_out;
178 FadeShape _fade_out_shape;
179 mutable Curve _envelope;
180 gain_t _scale_amplitude;
181 uint32_t _fade_in_disabled;
182 uint32_t _fade_out_disabled;
184 void set_default_fades ();
185 void set_default_fade_in ();
186 void set_default_fade_out ();
187 void set_default_envelope ();
189 StateManager::State* state_factory (std::string why) const;
190 Change restore_state (StateManager::State&);
192 void recompute_gain_at_end ();
193 void recompute_gain_at_start ();
195 bool copied() const { return _flags & Copied; }
196 void maybe_uncopy ();
197 void rename_after_first_edit ();
199 jack_nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
200 float *gain_buffer, char * workbuf, jack_nframes_t position, jack_nframes_t cnt,
202 jack_nframes_t read_frames = 0,
203 jack_nframes_t skip_frames = 0) const;
205 bool verify_start (jack_nframes_t position);
206 bool verify_length (jack_nframes_t position);
207 bool verify_start_mutable (jack_nframes_t& start);
208 bool verify_start_and_length (jack_nframes_t start, jack_nframes_t length);
209 void recompute_at_start ();
210 void recompute_at_end ();
212 void envelope_changed (Change);
214 void source_deleted (Source*);
217 } /* namespace ARDOUR */
219 /* access from C objects */
222 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);
223 uint32_t region_length_from_c (void *arg);
224 uint32_t sourcefile_length_from_c (void *arg, double);
227 #endif /* __ardour_audio_region_h__ */