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/*
Copyright (C) 2000-2006 Paul Davis
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_audio_region_h__
#define __ardour_audio_region_h__
#include <vector>
#include <list>
#include "pbd/fastlog.h"
#include "pbd/undo.h"
#include "ardour/ardour.h"
#include "ardour/automatable_controls.h"
#include "ardour/gain.h"
#include "ardour/logcurve.h"
#include "ardour/region.h"
class XMLNode;
namespace ARDOUR {
class Route;
class Playlist;
class Session;
class Filter;
class AudioSource;
class AudioRegion : public Region
{
public:
static Change FadeInChanged;
static Change FadeOutChanged;
static Change FadeInActiveChanged;
static Change FadeOutActiveChanged;
static Change EnvelopeActiveChanged;
static Change ScaleAmplitudeChanged;
static Change EnvelopeChanged;
~AudioRegion();
void copy_settings (boost::shared_ptr<const AudioRegion>);
bool source_equivalent (boost::shared_ptr<const Region>) const;
bool speed_mismatch (float) const;
boost::shared_ptr<AudioSource> audio_source (uint32_t n=0) const;
void set_scale_amplitude (gain_t);
gain_t scale_amplitude() const { return _scale_amplitude; }
void normalize_to (float target_in_dB = 0.0f);
bool envelope_active () const { return _flags & Region::EnvelopeActive; }
bool fade_in_active () const { return _flags & Region::FadeIn; }
bool fade_out_active () const { return _flags & Region::FadeOut; }
boost::shared_ptr<AutomationList> fade_in() { return _fade_in; }
boost::shared_ptr<AutomationList> fade_out() { return _fade_out; }
boost::shared_ptr<AutomationList> envelope() { return _envelope; }
virtual nframes_t read_peaks (PeakData *buf, nframes_t npeaks,
nframes_t offset, nframes_t cnt,
uint32_t chan_n=0, double samples_per_unit= 1.0) const;
/* Readable interface */
enum ReadOps {
ReadOpsNone = 0x0,
ReadOpsOwnAutomation = 0x1,
ReadOpsOwnScaling = 0x2,
ReadOpsCount = 0x4,
ReadOpsFades = 0x8
};
virtual nframes_t read (Sample*, sframes_t pos, nframes_t cnt, int channel) const;
virtual nframes_t read_with_ops (Sample*, sframes_t pos, nframes_t cnt, int channel, ReadOps rops) const;
virtual nframes64_t readable_length() const { return length(); }
virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
sframes_t position,
nframes_t cnt,
uint32_t chan_n = 0,
nframes_t read_frames = 0,
nframes_t skip_frames = 0) const;
virtual nframes_t master_read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
sframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
virtual nframes_t read_raw_internal (Sample*, sframes_t, nframes_t, int channel) const;
XMLNode& state (bool);
int set_state (const XMLNode&);
static void set_default_fade (float steepness, nframes_t len);
bool fade_in_is_default () const;
bool fade_out_is_default () const;
enum FadeShape {
Linear,
Fast,
Slow,
LogA,
LogB
};
void set_fade_in_active (bool yn);
void set_fade_in_shape (FadeShape);
void set_fade_in_length (nframes_t);
void set_fade_in (FadeShape, nframes_t);
void set_fade_out_active (bool yn);
void set_fade_out_shape (FadeShape);
void set_fade_out_length (nframes_t);
void set_fade_out (FadeShape, nframes_t);
void set_envelope_active (bool yn);
void set_default_envelope ();
int separate_by_channel (ARDOUR::Session&, std::vector<boost::shared_ptr<Region> >&) const;
/* automation */
boost::shared_ptr<Evoral::Control>
control(const Evoral::Parameter& id, bool create=false) {
return _automatable.data().control(id, create);
}
virtual boost::shared_ptr<const Evoral::Control>
control(const Evoral::Parameter& id) const {
return _automatable.data().control(id);
}
/* export */
int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
/* xfade/fade interactions */
void suspend_fade_in ();
void suspend_fade_out ();
void resume_fade_in ();
void resume_fade_out ();
int get_transients (AnalysisFeatureList&, bool force_new = false);
std::list<std::pair<nframes_t, nframes_t> > find_silence (Sample, nframes_t) const;
private:
friend class RegionFactory;
friend class Crossfade;
AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (const SourceList &, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (boost::shared_ptr<const AudioRegion>, const SourceList&, nframes_t length, const std::string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (boost::shared_ptr<const AudioRegion>);
AudioRegion (boost::shared_ptr<AudioSource>, const XMLNode&);
AudioRegion (SourceList &, const XMLNode&);
private:
void init ();
void set_default_fades ();
void set_default_fade_in ();
void set_default_fade_out ();
void recompute_gain_at_end ();
void recompute_gain_at_start ();
nframes_t _read_at (const SourceList&, nframes_t limit,
Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
sframes_t position, nframes_t cnt,
uint32_t chan_n = 0,
nframes_t read_frames = 0,
nframes_t skip_frames = 0,
ReadOps readops = ReadOps (~0)) const;
void recompute_at_start ();
void recompute_at_end ();
void envelope_changed ();
void fade_in_changed ();
void fade_out_changed ();
void source_offset_changed ();
void listen_to_my_curves ();
void listen_to_my_sources ();
AutomatableControls _automatable;
boost::shared_ptr<AutomationList> _fade_in;
FadeShape _fade_in_shape;
boost::shared_ptr<AutomationList> _fade_out;
FadeShape _fade_out_shape;
boost::shared_ptr<AutomationList> _envelope;
gain_t _scale_amplitude;
uint32_t _fade_in_disabled;
uint32_t _fade_out_disabled;
protected:
/* default constructor for derived (compound) types */
AudioRegion (Session& s, nframes_t, nframes_t, std::string name);
int set_live_state (const XMLNode&, Change&, bool send);
};
} /* namespace ARDOUR */
/* access from C objects */
extern "C" {
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);
uint32_t region_length_from_c (void *arg);
uint32_t sourcefile_length_from_c (void *arg, double);
}
#endif /* __ardour_audio_region_h__ */
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