rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 204 insertions, 0 deletions

diff --git a/libs/ardour/ardour/audioregion.h b/libs/ardour/ardour/audioregion.h
new file mode 100644
index 0000000000..81b7ef7c57
--- /dev/null
+++ b/libs/ardour/ardour/audioregion.h
@@ -0,0 +1,204 @@
+/*
+    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/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 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();
+
+	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 */
+	
+	virtual nframes64_t read (Sample*, nframes64_t pos, nframes64_t cnt, int channel) const;
+	virtual nframes64_t readable_length() const { return length(); }
+
+	virtual nframes_t read_at (Sample *buf, Sample *mixdown_buf,
+			float *gain_buf, nframes_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,
+					  nframes_t position, nframes_t cnt, uint32_t chan_n=0) const;
+	
+	virtual nframes_t read_raw_internal (Sample*, nframes_t, nframes_t) 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&, vector<boost::shared_ptr<AudioRegion> >&) const;
+
+	/* 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);
+
+  private:
+	friend class RegionFactory;
+
+	AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length);
+	AudioRegion (boost::shared_ptr<AudioSource>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
+	AudioRegion (const SourceList &, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
+	AudioRegion (boost::shared_ptr<const AudioRegion>, nframes_t start, nframes_t length, const string& name, layer_t = 0, Region::Flag flags = Region::DefaultFlags);
+	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, nframes_t position, nframes_t cnt, 
+			    uint32_t chan_n = 0,
+			    nframes_t read_frames = 0,
+			    nframes_t skip_frames = 0,
+			    bool raw = false) 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 ();
+
+	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); 
+	AudioRegion (boost::shared_ptr<const AudioRegion>);
+
+	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__ */