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Diffstat (limited to 'libs/ardour/ardour/audiosource.h')
| -rw-r--r-- | libs/ardour/ardour/audiosource.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h new file mode 100644 index 0000000000..1dcf5b42f3 --- /dev/null +++ b/libs/ardour/ardour/audiosource.h @@ -0,0 +1,166 @@ +/* + 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 + 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. + + $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 <time.h> + +#include <glibmm/thread.h> + +#include <sigc++/signal.h> + +#include <ardour/source.h> +#include <ardour/ardour.h> +#include <ardour/stateful.h> +#include <pbd/xml++.h> + +using std::list; +using std::vector; +using std::string; + +namespace ARDOUR { + +const jack_nframes_t frames_per_peak = 256; + +class AudioSource : public Source +{ + public: + AudioSource (string name); + AudioSource (const XMLNode&); + virtual ~AudioSource (); + + /* returns the number of items in this `audio_source' */ + + virtual jack_nframes_t length() const { + return _length; + } + + virtual jack_nframes_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 float sample_rate () const = 0; + + 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; } + + uint32_t read_data_count() const { return _read_data_count; } + uint32_t write_data_count() const { return _write_data_count; } + + 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; + + 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&); + + static int start_peak_thread (); + static void stop_peak_thread (); + + int rename_peakfile (std::string newpath); + + static void set_build_missing_peakfiles (bool yn) { + _build_missing_peakfiles = yn; + } + + static void set_build_peakfiles (bool yn) { + _build_peakfiles = yn; + } + + 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; + + private: + bool file_changed (string path); +}; + +} + +#endif /* __ardour_audio_source_h__ */ |