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__
26 #include <pbd/fastlog.h>
29 #include <ardour/ardour.h>
30 #include <ardour/region.h>
31 #include <ardour/gain.h>
32 #include <ardour/logcurve.h>
33 #include <ardour/export.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 bool source_equivalent (boost::shared_ptr<const Region>) const;
60 bool speed_mismatch (float) const;
62 boost::shared_ptr<AudioSource> source (uint32_t n=0) const { if (n < sources.size()) return sources[n]; else return sources[0]; }
63 const SourceList& get_sources() const { return sources; }
65 void set_scale_amplitude (gain_t);
66 gain_t scale_amplitude() const { return _scale_amplitude; }
68 void normalize_to (float target_in_dB = 0.0f);
70 uint32_t n_channels() const { return sources.size(); }
71 vector<string> master_source_names();
72 void set_master_sources (SourceList&);
74 bool envelope_active () const { return _flags & Region::EnvelopeActive; }
75 bool fade_in_active () const { return _flags & Region::FadeIn; }
76 bool fade_out_active () const { return _flags & Region::FadeOut; }
77 bool captured() const { return !(_flags & (Region::Flag (Region::Import|Region::External))); }
79 Curve& fade_in() { return _fade_in; }
80 Curve& fade_out() { return _fade_out; }
81 Curve& envelope() { return _envelope; }
83 nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
84 nframes_t offset, nframes_t cnt,
85 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
87 /* Readable interface */
89 virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const;
90 virtual nframes64_t readable_length() const { return length(); }
92 virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf,
93 float *gain_buf, nframes_t position, nframes_t cnt,
95 nframes_t read_frames = 0,
96 nframes_t skip_frames = 0) const;
98 nframes_t master_read_at (Sample *buf, Sample *mixdown_buf,
100 nframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
102 XMLNode& state (bool);
103 int set_state (const XMLNode&);
105 static void set_default_fade (float steepness, nframes_t len);
106 bool fade_in_is_default () const;
107 bool fade_out_is_default () const;
117 void set_fade_in_active (bool yn);
118 void set_fade_in_shape (FadeShape);
119 void set_fade_in_length (nframes_t);
120 void set_fade_in (FadeShape, nframes_t);
122 void set_fade_out_active (bool yn);
123 void set_fade_out_shape (FadeShape);
124 void set_fade_out_length (nframes_t);
125 void set_fade_out (FadeShape, nframes_t);
127 void set_envelope_active (bool yn);
128 void set_default_envelope ();
130 int separate_by_channel (ARDOUR::Session&, vector<boost::shared_ptr<AudioRegion> >&) const;
134 int apply (AudioFilter&);
138 int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
140 boost::shared_ptr<Region> get_parent() const;
142 /* xfade/fade interactions */
144 void suspend_fade_in ();
145 void suspend_fade_out ();
146 void resume_fade_in ();
147 void resume_fade_out ();
149 void set_playlist (boost::weak_ptr<Playlist>);
152 friend class RegionFactory;
154 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
155 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
156 AudioRegion (const SourceList &, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
157 AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
158 AudioRegion (boost::shared_ptr<const AudioRegion>);
159 AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
160 AudioRegion (SourceList &, const XMLNode&);
163 void set_default_fades ();
164 void set_default_fade_in ();
165 void set_default_fade_out ();
167 void recompute_gain_at_end ();
168 void recompute_gain_at_start ();
170 nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
171 float *gain_buffer, nframes_t position, nframes_t cnt,
173 nframes_t read_frames = 0,
174 nframes_t skip_frames = 0,
175 bool raw = false) const;
177 bool verify_start (nframes_t position);
178 bool verify_length (nframes_t& length);
179 bool verify_start_mutable (nframes_t& start);
180 bool verify_start_and_length (nframes_t start, nframes_t& length);
181 void recompute_at_start ();
182 void recompute_at_end ();
184 void envelope_changed ();
185 void fade_in_changed ();
186 void fade_out_changed ();
187 void source_offset_changed ();
188 void listen_to_my_curves ();
190 void source_deleted ();
194 /** Used when timefx are applied, so we can always use the original source. */
195 SourceList master_sources;
197 mutable Curve _fade_in;
198 FadeShape _fade_in_shape;
199 mutable Curve _fade_out;
200 FadeShape _fade_out_shape;
201 mutable Curve _envelope;
202 gain_t _scale_amplitude;
203 uint32_t _fade_in_disabled;
204 uint32_t _fade_out_disabled;
207 int set_live_state (const XMLNode&, Change&, bool send);
210 } /* namespace ARDOUR */
212 /* access from C objects */
215 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);
216 uint32_t region_length_from_c (void *arg);
217 uint32_t sourcefile_length_from_c (void *arg, double);
220 #endif /* __ardour_audio_region_h__ */