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/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 speed_mismatch (float) const;
60 boost::shared_ptr<AudioSource> audio_source (uint32_t n=0) const;
62 void set_scale_amplitude (gain_t);
63 gain_t scale_amplitude() const { return _scale_amplitude; }
65 void normalize_to (float target_in_dB = 0.0f);
67 bool envelope_active () const { return _flags & Region::EnvelopeActive; }
68 bool fade_in_active () const { return _flags & Region::FadeIn; }
69 bool fade_out_active () const { return _flags & Region::FadeOut; }
71 boost::shared_ptr<AutomationList> fade_in() { return _fade_in; }
72 boost::shared_ptr<AutomationList> fade_out() { return _fade_out; }
73 boost::shared_ptr<AutomationList> envelope() { return _envelope; }
75 virtual nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
76 nframes_t offset, nframes_t cnt,
77 uint32_t chan_n=0, double samples_per_unit= 1.0) const;
79 /* Readable interface */
81 virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const;
82 virtual nframes64_t readable_length() const { return length(); }
84 virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf,
85 float *gain_buf, nframes_t position, nframes_t cnt,
87 nframes_t read_frames = 0,
88 nframes_t skip_frames = 0) const;
90 virtual nframes_t master_read_at (Sample *buf, Sample *mixdown_buf,
92 nframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
94 virtual nframes_t read_raw_internal (Sample*, nframes_t, nframes_t) const;
96 XMLNode& state (bool);
97 int set_state (const XMLNode&);
99 static void set_default_fade (float steepness, nframes_t len);
100 bool fade_in_is_default () const;
101 bool fade_out_is_default () const;
111 void set_fade_in_active (bool yn);
112 void set_fade_in_shape (FadeShape);
113 void set_fade_in_length (nframes_t);
114 void set_fade_in (FadeShape, nframes_t);
116 void set_fade_out_active (bool yn);
117 void set_fade_out_shape (FadeShape);
118 void set_fade_out_length (nframes_t);
119 void set_fade_out (FadeShape, nframes_t);
121 void set_envelope_active (bool yn);
122 void set_default_envelope ();
124 int separate_by_channel (ARDOUR::Session&, vector<boost::shared_ptr<AudioRegion> >&) const;
128 int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
130 /* xfade/fade interactions */
132 void suspend_fade_in ();
133 void suspend_fade_out ();
134 void resume_fade_in ();
135 void resume_fade_out ();
137 int get_transients (AnalysisFeatureList&, bool force_new = false);
140 friend class RegionFactory;
142 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
143 AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
144 AudioRegion (const SourceList &, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
145 AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
146 AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
147 AudioRegion (SourceList &, const XMLNode&);
151 void set_default_fades ();
152 void set_default_fade_in ();
153 void set_default_fade_out ();
155 void recompute_gain_at_end ();
156 void recompute_gain_at_start ();
158 nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
159 float *gain_buffer, nframes_t position, nframes_t cnt,
161 nframes_t read_frames = 0,
162 nframes_t skip_frames = 0,
163 bool raw = false) const;
165 void recompute_at_start ();
166 void recompute_at_end ();
168 void envelope_changed ();
169 void fade_in_changed ();
170 void fade_out_changed ();
171 void source_offset_changed ();
172 void listen_to_my_curves ();
173 void listen_to_my_sources ();
175 boost::shared_ptr<AutomationList> _fade_in;
176 FadeShape _fade_in_shape;
177 boost::shared_ptr<AutomationList> _fade_out;
178 FadeShape _fade_out_shape;
179 boost::shared_ptr<AutomationList> _envelope;
180 gain_t _scale_amplitude;
181 uint32_t _fade_in_disabled;
182 uint32_t _fade_out_disabled;
185 /* default constructor for derived (compound) types */
187 AudioRegion (Session& s, nframes_t, nframes_t, std::string name);
188 AudioRegion (boost::shared_ptr<const AudioRegion>);
190 int set_live_state (const XMLNode&, Change&, bool send);
193 } /* namespace ARDOUR */
195 /* access from C objects */
198 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);
199 uint32_t region_length_from_c (void *arg);
200 uint32_t sourcefile_length_from_c (void *arg, double);
203 #endif /* __ardour_audio_region_h__ */