don't always rebuild peakfiles for compound regions

git-svn-id: svn://localhost/ardour2/branches/3.0@9627 d708f5d6-7413-0410-9779-e7cbd77b26cf

libs/ardour/ardour/audio_playlist_source.h

@@ -32,7 +32,7 @@ namespace ARDOUR {
 
 class AudioPlaylist;
 
-class AudioPlaylistSource : public AudioSource, public PlaylistSource {
+class AudioPlaylistSource : public PlaylistSource, public AudioSource  {
   public:
     virtual ~AudioPlaylistSource ();
 
@@ -59,6 +59,7 @@ class AudioPlaylistSource : public AudioSource, public PlaylistSource {
     AudioPlaylistSource (Session&, const PBD::ID& orig, const std::string& name, boost::shared_ptr<AudioPlaylist>, uint32_t chn,
                          frameoffset_t begin, framecnt_t len, Source::Flag flags);
     AudioPlaylistSource (Session&, const XMLNode&);
+
     
   private:
     uint32_t                         _playlist_channel;

libs/ardour/ardour/midi_playlist_source.h

@@ -50,8 +50,6 @@ class MidiPlaylistSource : public MidiSource, public PlaylistSource {
     void load_model(bool lock=true, bool force_reload=false);
     void destroy_model();
 
-    static void ensure_buffers_for_level (uint32_t);
-
   protected:
     friend class SourceFactory;
 
@@ -70,6 +68,7 @@ class MidiPlaylistSource : public MidiSource, public PlaylistSource {
     framepos_t write_unlocked (MidiRingBuffer<framepos_t>& dst,
 					   framepos_t position,
 					   framecnt_t cnt);
+
   private:
     int set_state (const XMLNode&, int version, bool with_descendants);
     framecnt_t _length;

libs/ardour/ardour/playlist_source.h

@@ -50,7 +50,6 @@ class PlaylistSource : virtual public Source {
     PlaylistSource (Session&, const XMLNode&);
     
     void add_state (XMLNode&);
-
 };
         
 } /* namespace */

libs/ardour/audio_playlist_source.cc

@@ -49,8 +49,8 @@ using namespace PBD;
 AudioPlaylistSource::AudioPlaylistSource (Session& s, const ID& orig, const std::string& name, boost::shared_ptr<AudioPlaylist> p, 
 					  uint32_t chn, frameoffset_t begin, framecnt_t len, Source::Flag flags)
 	: Source (s, DataType::AUDIO, name)
-	, AudioSource (s, name)
 	, PlaylistSource (s, orig, name, p, DataType::AUDIO, begin, len, flags)
+	, AudioSource (s, name)
 	, _playlist_channel (chn)
 {
 	AudioSource::_length = len;
@@ -59,8 +59,8 @@ AudioPlaylistSource::AudioPlaylistSource (Session& s, const ID& orig, const std:
 
 AudioPlaylistSource::AudioPlaylistSource (Session& s, const XMLNode& node)
 	: Source (s, node)
-	, AudioSource (s, node)
 	, PlaylistSource (s, node)
+	, AudioSource (s, node)
 {
 	/* PlaylistSources are never writable, renameable, removable or destructive */
 	_flags = Flag (_flags & ~(Writable|CanRename|Removable|RemovableIfEmpty|RemoveAtDestroy|Destructive));
@@ -93,7 +93,6 @@ AudioPlaylistSource::get_state ()
 
 	return node;
 }
-
 	
 int
 AudioPlaylistSource::set_state (const XMLNode& node, int version) 
@@ -106,8 +105,8 @@ AudioPlaylistSource::set_state (const XMLNode& node, int version, bool with_desc
 {
 	if (with_descendants) {
 		if (Source::set_state (node, version) || 
-		    AudioSource::set_state (node, version) ||
+		    PlaylistSource::set_state (node, version) ||
-		    PlaylistSource::set_state (node, version)) {
+		    AudioSource::set_state (node, version)) {
 			return -1;
 		}
 	}
@@ -226,3 +225,4 @@ AudioPlaylistSource::peak_path (string /*audio_path_IGNORED*/)
 	return _peak_path;
 }
 
+

libs/ardour/audiosource.cc

@@ -252,8 +252,14 @@ AudioSource::initialize_peakfile (bool newfile, string audio_path)
 			int err = stat (audio_path.c_str(), &stat_file);
 
 			if (err) {
-				_peaks_built = false;
+
-				_peak_byte_max = 0;
+				/* no audio path - nested source or we can't
+				   read it or ... whatever, use the peakfile as-is.
+				*/
+
+				_peaks_built = true;
+				_peak_byte_max = statbuf.st_size;
+
 			} else {
 
 				/* allow 6 seconds slop on checking peak vs. file times because of various
@@ -996,6 +1002,8 @@ AudioSource::ensure_buffers_for_level_locked (uint32_t level, framecnt_t frame_r
 	_mixdown_buffers.clear ();
 	_gain_buffers.clear ();
 
+	cerr << "Allocating nested buffers for level " << level << endl;
+
 	while (_mixdown_buffers.size() < level) {
 		_mixdown_buffers.push_back (boost::shared_ptr<Sample> (new Sample[nframes]));
 		_gain_buffers.push_back (boost::shared_ptr<gain_t> (new gain_t[nframes]));

libs/ardour/midi_playlist_source.cc

@@ -52,7 +52,6 @@ MidiPlaylistSource::MidiPlaylistSource (Session& s, const ID& orig, const std::s
 	, MidiSource (s, name, flags)
 	, PlaylistSource (s, orig, name, p, DataType::AUDIO, begin, len, flags)
 {
-	ensure_buffers_for_level (_level);
 }
 
 MidiPlaylistSource::MidiPlaylistSource (Session& s, const XMLNode& node)
@@ -106,8 +105,6 @@ MidiPlaylistSource::set_state (const XMLNode& node, int version, bool with_desce
 		}
 	}
 
-	ensure_buffers_for_level (_level);
-
 	return 0;
 }
 
@@ -183,9 +180,3 @@ MidiPlaylistSource::empty () const
 	return !_playlist || _playlist->empty();
 }
 
-void
-MidiPlaylistSource::ensure_buffers_for_level (uint32_t level)
-{
-}
-
-