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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.
$Id$
*/
#ifndef __ardour_audio_region_h__
#define __ardour_audio_region_h__
#include <vector>
#include <pbd/fastlog.h>
#include <pbd/undo.h>
#include <ardour/ardour.h>
#include <ardour/region.h>
#include <ardour/gain.h>
#include <ardour/logcurve.h>
#include <ardour/export.h>
class XMLNode;
namespace ARDOUR {
class Route;
class Playlist;
class Session;
class AudioFilter;
class AudioSource;
struct AudioRegionState : public RegionState
{
AudioRegionState (std::string why);
Curve _fade_in;
Curve _fade_out;
Curve _envelope;
gain_t _scale_amplitude;
uint32_t _fade_in_disabled;
uint32_t _fade_out_disabled;
};
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();
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; }
Curve& fade_in() { return _fade_in; }
Curve& fade_out() { return _fade_out; }
Curve& envelope() { return _envelope; }
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;
virtual jack_nframes_t read_at (Sample *buf, Sample *mixdown_buf,
float *gain_buf, jack_nframes_t position, jack_nframes_t cnt,
uint32_t chan_n = 0,
jack_nframes_t read_frames = 0,
jack_nframes_t skip_frames = 0) const;
jack_nframes_t master_read_at (Sample *buf, Sample *mixdown_buf, float *gain_buf,
jack_nframes_t position, jack_nframes_t cnt, uint32_t chan_n=0) const;
XMLNode& state (bool);
int set_state (const XMLNode&);
static void set_default_fade (float steepness, jack_nframes_t len);
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 (jack_nframes_t);
void set_fade_in (FadeShape, jack_nframes_t);
void set_fade_out_active (bool yn);
void set_fade_out_shape (FadeShape);
void set_fade_out_length (jack_nframes_t);
void set_fade_out (FadeShape, jack_nframes_t);
void set_envelope_active (bool yn);
int separate_by_channel (ARDOUR::Session&, vector<AudioRegion*>&) const;
UndoAction get_memento() const;
/* filter */
int apply (AudioFilter&);
/* export */
int exportme (ARDOUR::Session&, ARDOUR::AudioExportSpecification&);
/* xfade/fade interactions */
void suspend_fade_in ();
void suspend_fade_out ();
void resume_fade_in ();
void resume_fade_out ();
private:
friend class RegionFactory;
AudioRegion (boost::shared_ptr<AudioSource>, jack_nframes_t start, jack_nframes_t length);
AudioRegion (boost::shared_ptr<AudioSource>, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (SourceList &, jack_nframes_t start, jack_nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
AudioRegion (boost::shared_ptr<const AudioRegion>, jack_nframes_t start, jack_nframes_t length, const 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 set_default_fades ();
void set_default_fade_in ();
void set_default_fade_out ();
void set_default_envelope ();
StateManager::State* state_factory (std::string why) const;
Change restore_state (StateManager::State&);
void recompute_gain_at_end ();
void recompute_gain_at_start ();
jack_nframes_t _read_at (const SourceList&, Sample *buf, Sample *mixdown_buffer,
float *gain_buffer, jack_nframes_t position, jack_nframes_t cnt,
uint32_t chan_n = 0,
jack_nframes_t read_frames = 0,
jack_nframes_t skip_frames = 0) const;
void recompute_at_start ();
void recompute_at_end ();
void envelope_changed (Change);
void source_offset_changed ();
mutable Curve _fade_in;
FadeShape _fade_in_shape;
mutable Curve _fade_out;
FadeShape _fade_out_shape;
mutable Curve _envelope;
gain_t _scale_amplitude;
uint32_t _fade_in_disabled;
uint32_t _fade_out_disabled;
};
} /* 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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