rearrange inheritance so that Automatable IS-A Slavable

[ardour.git] / libs / ardour / ardour / sndfilesource.h

diff --git a/libs/ardour/ardour/sndfilesource.h b/libs/ardour/ardour/sndfilesource.h
index 5d11c9ef095e6be2599dd40abd88cca875205c63..4579a32b6df9c6bfe19ec2591c708a1807702687 100644 (file)
--- a/libs/ardour/ardour/sndfilesource.h
+++ b/libs/ardour/ardour/sndfilesource.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2006 Paul Davis 
+    Copyright (C) 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
@@ -15,40 +15,107 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
-#ifndef __sndfile_source_h__ 
+#ifndef __sndfile_source_h__
 #define __sndfile_source_h__
 
 #include <sndfile.h>
 
-#include <ardour/externalsource.h>
+#include "ardour/audiofilesource.h"
+#include "ardour/broadcast_info.h"
 
 namespace ARDOUR {
 
-class SndFileSource : public ExternalSource {
+class LIBARDOUR_API SndFileSource : public AudioFileSource {
   public:
-       SndFileSource (const string& path_plus_channel, bool build_peak = true);
-       SndFileSource (const XMLNode&);
+       /** Constructor to be called for existing external-to-session files */
+       SndFileSource (Session&, const std::string& path, int chn, Flag flags);
+
+       /* Constructor to be called for new in-session files */
+       SndFileSource (Session&, const std::string& path, const std::string& origin,
+                      SampleFormat samp_format, HeaderFormat hdr_format, framecnt_t rate,
+                      Flag flags = SndFileSource::default_writable_flags);
+
+       /* Constructor to be called for recovering files being used for
+        * capture. They are in-session, they already exist, they should not
+        * be writable. They are an odd hybrid (from a constructor point of
+        * view) of the previous two constructors.
+        */
+       SndFileSource (Session&, const std::string& path, int chn);
+
+       /** Constructor to be called for existing in-session files during
+        * session loading
+        */
+       SndFileSource (Session&, const XMLNode&);
+
        ~SndFileSource ();
 
-       jack_nframes_t length() const { return _info.frames; } 
-       jack_nframes_t read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
        float sample_rate () const;
+       int update_header (framepos_t when, struct tm&, time_t);
+       int flush_header ();
+       void flush ();
 
-  private:
-       SNDFILE *sf;
-       SF_INFO _info;
+       framepos_t natural_position () const;
+
+       framepos_t last_capture_start_frame() const;
+       void mark_capture_start (framepos_t);
+       void mark_capture_end ();
+       void clear_capture_marks();
+
+       bool set_destructive (bool yn);
+
+       bool one_of_several_channels () const;
+    uint32_t channel_count () const { return _info.channels; }
+
+       bool clamped_at_unity () const;
 
-       mutable float *tmpbuf;
-       mutable jack_nframes_t tmpbufsize;
-       mutable Glib::Mutex _tmpbuf_lock;
+       static void setup_standard_crossfades (Session const &, framecnt_t sample_rate);
+       static const Source::Flag default_writable_flags;
 
-       void init (const string &str, bool build_peak);
+       static int get_soundfile_info (const std::string& path, SoundFileInfo& _info, std::string& error_msg);
+
+  protected:
+       void close ();
+
+       void set_path (const std::string& p);
+       void set_header_timeline_position ();
+
+       framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const;
+       framecnt_t write_unlocked (Sample *dst, framecnt_t cnt);
+       framecnt_t write_float (Sample* data, framepos_t pos, framecnt_t cnt);
+
+  private:
+       SNDFILE* _sndfile;
+       SF_INFO _info;
+       BroadcastInfo *_broadcast_info;
+
+       void init_sndfile ();
+       int open();
+       int setup_broadcast_info (framepos_t when, struct tm&, time_t);
+       void file_closed ();
+
+       /* destructive */
+
+       static framecnt_t xfade_frames;
+       static gain_t* out_coefficient;
+       static gain_t* in_coefficient;
+
+       bool          _capture_start;
+       bool          _capture_end;
+       framepos_t     capture_start_frame;
+       framepos_t     file_pos; // unit is frames
+       Sample*        xfade_buf;
+
+       framecnt_t crossfade (Sample* data, framecnt_t cnt, int dir);
+       void set_timeline_position (framepos_t);
+       framecnt_t destructive_write_unlocked (Sample *dst, framecnt_t cnt);
+       framecnt_t nondestructive_write_unlocked (Sample *dst, framecnt_t cnt);
+       void handle_header_position_change ();
+       PBD::ScopedConnection header_position_connection;
 };
 
-}; /* namespace ARDOUR */
+} // namespace ARDOUR
 
 #endif /* __sndfile_source_h__ */