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.
20 #ifndef __ardour_audio_region_h__
21 #define __ardour_audio_region_h__
25 #include <pbd/fastlog.h>
28 #include <ardour/ardour.h>
29 #include <ardour/region.h>
30 #include <ardour/gain.h>
31 #include <ardour/logcurve.h>
32 #include <ardour/export.h>
44 class AudioRegion : public Region
47 static Change FadeInChanged;
48 static Change FadeOutChanged;
49 static Change FadeInActiveChanged;
50 static Change FadeOutActiveChanged;
51 static Change EnvelopeActiveChanged;
52 static Change ScaleAmplitudeChanged;
53 static Change EnvelopeChanged;
57 bool source_equivalent (boost::shared_ptr<const Region>) const;
59 bool speed_mismatch (float) const;
61 boost::shared_ptr<AudioSource> source (uint32_t n=0) const { if (n < sources.size()) return sources[n]; else return sources[0]; }
63 void set_scale_amplitude (gain_t);
64 gain_t scale_amplitude() const { return _scale_amplitude; }
66 void normalize_to (float target_in_dB = 0.0f);
68 uint32_t n_channels() const { return sources.size(); }
69 vector<string> master_source_names();
70 void set_master_sources (SourceList&);
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);
99 bool fade_in_is_default () const;
100 bool fade_out_is_default () const;
110 void set_fade_in_active (bool yn);
111 void set_fade_in_shape (FadeShape);
112 void set_fade_in_length (nframes_t);
113 void set_fade_in (FadeShape, nframes_t);
115 void set_fade_out_active (bool yn);
116 void set_fade_out_shape (FadeShape);
117 void set_fade_out_length (nframes_t);
118 void set_fade_out (FadeShape, nframes_t);
120 void set_envelope_active (bool yn);
121 void set_default_envelope ();
123 int separate_by_channel (ARDOUR::Session&, vector<boost::shared_ptr<AudioRegion> >&) const;
127 int apply (AudioFilter&);
131 int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
133 boost::shared_ptr<Region> get_parent() const;
135 /* xfade/fade interactions */
137 void suspend_fade_in ();
138 void suspend_fade_out ();
139 void resume_fade_in ();
140 void resume_fade_out ();
142 void set_playlist (boost::weak_ptr<Playlist>);
145 friend class RegionFactory;
147 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
148 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
149 AudioRegion (SourceList &, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
150 AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
151 AudioRegion (boost::shared_ptr<const AudioRegion>);
152 AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
153 AudioRegion (SourceList &, const XMLNode&);
156 void set_default_fades ();
157 void set_default_fade_in ();
158 void set_default_fade_out ();
160 void recompute_gain_at_end ();
161 void recompute_gain_at_start ();
163 nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
164 float *gain_buffer, nframes_t position, nframes_t cnt,
166 nframes_t read_frames = 0,
167 nframes_t skip_frames = 0) const;
169 bool verify_start (nframes_t position);
170 bool verify_length (nframes_t position);
171 bool verify_start_mutable (nframes_t& start);
172 bool verify_start_and_length (nframes_t start, nframes_t length);
173 void recompute_at_start ();
174 void recompute_at_end ();
176 void envelope_changed ();
177 void fade_in_changed ();
178 void fade_out_changed ();
179 void source_offset_changed ();
180 void listen_to_my_curves ();
182 void source_deleted ();
186 /** Used when timefx are applied, so we can always use the original source. */
187 SourceList master_sources;
189 mutable Curve _fade_in;
190 FadeShape _fade_in_shape;
191 mutable Curve _fade_out;
192 FadeShape _fade_out_shape;
193 mutable Curve _envelope;
194 gain_t _scale_amplitude;
195 uint32_t _fade_in_disabled;
196 uint32_t _fade_out_disabled;
199 int set_live_state (const XMLNode&, Change&, bool send);
202 } /* namespace ARDOUR */
204 /* access from C objects */
207 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);
208 uint32_t region_length_from_c (void *arg);
209 uint32_t sourcefile_length_from_c (void *arg, double);
212 #endif /* __ardour_audio_region_h__ */