allow user tweaking of everything that might have inherent latency; add GUI for track...

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

diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h
index 2ada2552369a490eee4d672ebab8d43fa35732c8..812c30e8c297ebfc18f2520316d8cba5fe03e82d 100644 (file)
--- a/libs/ardour/ardour/audiosource.h
+++ b/libs/ardour/ardour/audiosource.h
@@ -15,7 +15,6 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id: audio_source.h 486 2006-04-27 09:04:24Z pauld $
 */
 
 #ifndef __ardour_audio_source_h__
@@ -23,7 +22,6 @@
 
 #include <list>
 #include <vector>
-#include <string>
 
 #include <boost/shared_ptr.hpp>
 #include <boost/enable_shared_from_this.hpp>
@@ -31,6 +29,7 @@
 #include <time.h>
 
 #include <glibmm/thread.h>
+#include <glibmm/ustring.h>
 
 #include <sigc++/signal.h>
 
@@ -41,7 +40,7 @@
 
 using std::list;
 using std::vector;
-using std::string;
+using Glib::ustring;
 
 namespace ARDOUR {
 
@@ -50,7 +49,7 @@ const nframes_t frames_per_peak = 256;
  class AudioSource : public Source, public boost::enable_shared_from_this<ARDOUR::AudioSource>
 {
   public:
-       AudioSource (Session&, string name);
+       AudioSource (Session&, ustring name);
        AudioSource (Session&, const XMLNode&);
        virtual ~AudioSource ();
        
@@ -64,8 +63,10 @@ const nframes_t frames_per_peak = 256;
        virtual void mark_for_remove() = 0;
        virtual void mark_streaming_write_completed () {}
 
-       void set_captured_for (string str) { _captured_for = str; }
-       string captured_for() const { return _captured_for; }
+       virtual bool can_truncate_peaks() const { return true; }
+
+       void set_captured_for (ustring str) { _captured_for = str; }
+       ustring captured_for() const { return _captured_for; }
 
        uint32_t read_data_count() const { return _read_data_count; }
        uint32_t write_data_count() const { return _write_data_count; }
@@ -80,10 +81,7 @@ const nframes_t frames_per_peak = 256;
        XMLNode& get_state ();
        int set_state (const XMLNode&);
 
-       static int  start_peak_thread ();
-       static void stop_peak_thread ();
-
-       int rename_peakfile (std::string newpath);
+       int rename_peakfile (ustring newpath);
        void touch_peakfile ();
 
        static void set_build_missing_peakfiles (bool yn) {
@@ -96,64 +94,41 @@ const nframes_t frames_per_peak = 256;
 
        virtual int setup_peakfile () { return 0; }
 
+       int prepare_for_peakfile_writes ();
+       void done_with_peakfile_writes ();
+
   protected:
        static bool _build_missing_peakfiles;
        static bool _build_peakfiles;
 
        bool                _peaks_built;
        mutable Glib::Mutex _lock;
-       bool                 next_peak_clear_should_notify;
-       string               peakpath;
-       string              _captured_for;
+       ustring               peakpath;
+       ustring              _captured_for;
 
        mutable uint32_t _read_data_count;  // modified in read()
        mutable uint32_t _write_data_count; // modified in write()
 
-       int initialize_peakfile (bool newfile, string path);
-       void build_peaks_from_scratch ();
+       int initialize_peakfile (bool newfile, ustring path);
+       int build_peaks_from_scratch ();
+       int compute_and_write_peaks (Sample* buf, nframes_t first_frame, nframes_t cnt, bool force);
+       void truncate_peakfile();
 
-       int  do_build_peak (nframes_t, nframes_t);
+       mutable off_t _peak_byte_max; // modified in compute_and_write_peak()
 
        virtual nframes_t read_unlocked (Sample *dst, nframes_t start, nframes_t cnt) const = 0;
        virtual nframes_t write_unlocked (Sample *dst, nframes_t cnt) = 0;
-       virtual string peak_path(string audio_path) = 0;
-       virtual string old_peak_path(string audio_path) = 0;
-       
-       static pthread_t peak_thread;
-       static bool      have_peak_thread;
-       static void*     peak_thread_work(void*);
-
-       static int peak_request_pipe[2];
-
-       struct PeakRequest {
-           enum Type {
-                   Build,
-                   Quit
-           };
-       };
-
-       static vector<boost::shared_ptr<AudioSource> > pending_peak_sources;
-       static Glib::Mutex* pending_peak_sources_lock;
-
-       static void queue_for_peaks (boost::shared_ptr<AudioSource>);
-       static void clear_queue_for_peaks ();
+       virtual ustring peak_path(ustring audio_path) = 0;
+       virtual ustring old_peak_path(ustring audio_path) = 0;
        
-       struct PeakBuildRecord {
-           nframes_t frame;
-           nframes_t cnt;
-
-           PeakBuildRecord (nframes_t f, nframes_t c) 
-                   : frame (f), cnt (c) {}
-           PeakBuildRecord (const PeakBuildRecord& other) {
-                   frame = other.frame;
-                   cnt = other.cnt;
-           }
-       };
-
-       list<AudioSource::PeakBuildRecord *> pending_peak_builds;
-
   private:
-       bool file_changed (string path);
+       int peakfile;
+       nframes_t peak_leftover_cnt;
+       nframes_t peak_leftover_size;
+       Sample* peak_leftovers;
+       nframes_t peak_leftover_frame;
+
+       bool file_changed (ustring path);
 };
 
 }