/*
- Copyright (C) 2000 Paul Davis
+ Copyright (C) 2000 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
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__
#define __ardour_audio_source_h__
-#include <list>
-#include <vector>
-#include <string>
+#include <boost/shared_ptr.hpp>
+#include <boost/shared_array.hpp>
+#include <boost/enable_shared_from_this.hpp>
#include <time.h>
-#include <glibmm/thread.h>
+#include <glibmm/threads.h>
+#include <boost/function.hpp>
-#include <sigc++/signal.h>
-
-#include <ardour/source.h>
-#include <ardour/ardour.h>
-#include <pbd/stateful.h>
-#include <pbd/xml++.h>
-
-using std::list;
-using std::vector;
-using std::string;
+#include "ardour/source.h"
+#include "ardour/ardour.h"
+#include "ardour/readable.h"
+#include "pbd/file_manager.h"
+#include "pbd/stateful.h"
+#include "pbd/xml++.h"
namespace ARDOUR {
-const jack_nframes_t frames_per_peak = 256;
-
-class AudioSource : public Source
+class LIBARDOUR_API AudioSource : virtual public Source,
+ public ARDOUR::Readable,
+ public boost::enable_shared_from_this<ARDOUR::AudioSource>
{
public:
- AudioSource (string name);
- AudioSource (const XMLNode&);
+ AudioSource (Session&, std::string name);
+ AudioSource (Session&, const XMLNode&);
virtual ~AudioSource ();
- /* one could argue that this should belong to Source, but other data types
- generally do not come with a model of "offset along an audio timeline"
- so its here in AudioSource for now.
- */
+ framecnt_t readable_length() const { return _length; }
+ virtual uint32_t n_channels() const { return 1; }
- virtual jack_nframes_t natural_position() const { return 0; }
-
- /* returns the number of items in this `audio_source' */
+ virtual bool empty() const;
+ framecnt_t length (framepos_t pos) const;
+ void update_length (framecnt_t cnt);
- virtual jack_nframes_t length() const {
- return _length;
- }
-
- virtual jack_nframes_t available_peaks (double zoom) const;
+ virtual framecnt_t available_peaks (double zoom) const;
- virtual jack_nframes_t read (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const;
- virtual jack_nframes_t write (Sample *src, jack_nframes_t cnt, char * workbuf);
+ virtual framecnt_t read (Sample *dst, framepos_t start, framecnt_t cnt, int channel=0) const;
+ virtual framecnt_t write (Sample *src, framecnt_t cnt);
virtual float sample_rate () const = 0;
- virtual void mark_for_remove() = 0;
- virtual void mark_streaming_write_completed () {}
+ 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; }
- uint32_t read_data_count() const { return _read_data_count; }
- uint32_t write_data_count() const { return _write_data_count; }
+ void set_captured_for (std::string str) { _captured_for = str; }
+ std::string captured_for() const { return _captured_for; }
- int read_peaks (PeakData *peaks, jack_nframes_t npeaks, jack_nframes_t start, jack_nframes_t cnt, double samples_per_unit) const;
- int build_peaks ();
- bool peaks_ready (sigc::slot<void>, sigc::connection&) const;
+ int read_peaks (PeakData *peaks, framecnt_t npeaks,
+ framepos_t start, framecnt_t cnt, double samples_per_visual_peak) const;
- static sigc::signal<void,AudioSource*> AudioSourceCreated;
-
- mutable sigc::signal<void> PeaksReady;
- mutable sigc::signal<void,jack_nframes_t,jack_nframes_t> PeakRangeReady;
-
- XMLNode& get_state ();
- int set_state (const XMLNode&);
+ int build_peaks ();
+ bool peaks_ready (boost::function<void()> callWhenReady, PBD::ScopedConnection** connection_created_if_not_ready, PBD::EventLoop* event_loop) const;
- static int start_peak_thread ();
- static void stop_peak_thread ();
+ mutable PBD::Signal0<void> PeaksReady;
+ mutable PBD::Signal2<void,framepos_t,framepos_t> PeakRangeReady;
+
+ XMLNode& get_state ();
+ int set_state (const XMLNode&, int version);
int rename_peakfile (std::string newpath);
+ void touch_peakfile ();
static void set_build_missing_peakfiles (bool yn) {
_build_missing_peakfiles = yn;
_build_peakfiles = yn;
}
+ static bool get_build_peakfiles () {
+ return _build_peakfiles;
+ }
+
+ virtual int setup_peakfile () { return 0; }
+
+ int prepare_for_peakfile_writes ();
+ void done_with_peakfile_writes (bool done = true);
+
+ /** @return true if the each source sample s must be clamped to -1 < s < 1 */
+ virtual bool clamped_at_unity () const = 0;
+
+ static void allocate_working_buffers (framecnt_t framerate);
+
protected:
static bool _build_missing_peakfiles;
static bool _build_peakfiles;
- bool _peaks_built;
- mutable Glib::Mutex _lock;
- jack_nframes_t _length;
- bool next_peak_clear_should_notify;
- string peakpath;
- string _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 do_build_peak (jack_nframes_t, jack_nframes_t);
-
- virtual jack_nframes_t read_unlocked (Sample *dst, jack_nframes_t start, jack_nframes_t cnt, char * workbuf) const = 0;
- virtual jack_nframes_t write_unlocked (Sample *dst, jack_nframes_t cnt, char * workbuf) = 0;
- virtual string peak_path(string audio_path) = 0;
- virtual string old_peak_path(string audio_path) = 0;
-
- void update_length (jack_nframes_t pos, jack_nframes_t cnt);
-
- 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<AudioSource*> pending_peak_sources;
- static Glib::Mutex* pending_peak_sources_lock;
-
- static void queue_for_peaks (AudioSource&);
- static void clear_queue_for_peaks ();
-
- struct PeakBuildRecord {
- jack_nframes_t frame;
- jack_nframes_t cnt;
-
- PeakBuildRecord (jack_nframes_t f, jack_nframes_t c)
- : frame (f), cnt (c) {}
- PeakBuildRecord (const PeakBuildRecord& other) {
- frame = other.frame;
- cnt = other.cnt;
- }
- };
-
- list<AudioSource::PeakBuildRecord *> pending_peak_builds;
+ static size_t _working_buffers_size;
+
+ /* these collections of working buffers for supporting
+ playlist's reading from potentially nested/recursive
+ sources assume SINGLE THREADED reads by the butler
+ thread, or a lock around calls that use them.
+ */
+
+ static std::vector<boost::shared_array<Sample> > _mixdown_buffers;
+ static std::vector<boost::shared_array<gain_t> > _gain_buffers;
+ static Glib::Threads::Mutex _level_buffer_lock;
+
+ static void ensure_buffers_for_level (uint32_t, framecnt_t);
+ static void ensure_buffers_for_level_locked (uint32_t, framecnt_t);
+
+ framecnt_t _length;
+ std::string peakpath;
+ std::string _captured_for;
+
+ int initialize_peakfile (std::string path);
+ int build_peaks_from_scratch ();
+ int compute_and_write_peaks (Sample* buf, framecnt_t first_frame, framecnt_t cnt,
+ bool force, bool intermediate_peaks_ready_signal);
+ void truncate_peakfile();
+
+ mutable off_t _peak_byte_max; // modified in compute_and_write_peak()
+
+ virtual framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const = 0;
+ virtual framecnt_t write_unlocked (Sample *dst, framecnt_t cnt) = 0;
+ virtual std::string peak_path(std::string audio_path) = 0;
+ virtual std::string find_broken_peakfile (std::string /* missing_peak_path */,
+ std::string audio_path) { return peak_path (audio_path); }
+
+ virtual int read_peaks_with_fpp (PeakData *peaks,
+ framecnt_t npeaks, framepos_t start, framecnt_t cnt,
+ double samples_per_visual_peak, framecnt_t fpp) const;
+
+ int compute_and_write_peaks (Sample* buf, framecnt_t first_frame, framecnt_t cnt,
+ bool force, bool intermediate_peaks_ready_signal,
+ framecnt_t frames_per_peak);
private:
- bool file_changed (string path);
+ bool _peaks_built;
+ /** This mutex is used to protect both the _peaks_built
+ * variable and also the emission (and handling) of the
+ * PeaksReady signal. Holding the lock when emitting
+ * PeaksReady means that _peaks_built cannot be changed
+ * during the handling of the signal.
+ */
+ mutable Glib::Threads::Mutex _peaks_ready_lock;
+
+ PBD::FdFileDescriptor* _peakfile_descriptor;
+ int _peakfile_fd;
+ framecnt_t peak_leftover_cnt;
+ framecnt_t peak_leftover_size;
+ Sample* peak_leftovers;
+ framepos_t peak_leftover_frame;
};
}
projects / ardour.git / blobdiff