149 lines
4.7 KiB
C++
149 lines
4.7 KiB
C++
/*
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Copyright (C) 2000 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __ardour_audio_source_h__
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#define __ardour_audio_source_h__
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#include <boost/shared_ptr.hpp>
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#include <boost/enable_shared_from_this.hpp>
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#include <time.h>
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#include <glibmm/thread.h>
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#include <glibmm/ustring.h>
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#include <boost/function.hpp>
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#include "ardour/source.h"
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#include "ardour/ardour.h"
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#include "pbd/stateful.h"
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#include "pbd/xml++.h"
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namespace ARDOUR {
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class AudioSource : virtual public Source,
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public ARDOUR::Readable,
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public boost::enable_shared_from_this<ARDOUR::AudioSource>
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{
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public:
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AudioSource (Session&, Glib::ustring name);
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AudioSource (Session&, const XMLNode&);
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virtual ~AudioSource ();
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framecnt_t readable_length() const { return _length; }
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uint32_t n_channels() const { return 1; }
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framecnt_t length (framepos_t pos) const;
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void update_length (framepos_t pos, framecnt_t cnt);
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virtual framecnt_t available_peaks (double zoom) const;
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virtual framecnt_t read (Sample *dst, framepos_t start, framecnt_t cnt, int channel=0) const;
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virtual framecnt_t write (Sample *src, framecnt_t cnt);
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virtual float sample_rate () const = 0;
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virtual void mark_streaming_write_completed () {}
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virtual bool can_truncate_peaks() const { return true; }
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void set_captured_for (Glib::ustring str) { _captured_for = str; }
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Glib::ustring captured_for() const { return _captured_for; }
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uint32_t read_data_count() const { return _read_data_count; }
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uint32_t write_data_count() const { return _write_data_count; }
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int read_peaks (PeakData *peaks, framecnt_t npeaks,
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framepos_t start, framecnt_t cnt, double samples_per_visual_peak) const;
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int build_peaks ();
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bool peaks_ready (boost::function<void()> callWhenReady, PBD::Connection& connection_created_if_not_ready, PBD::EventLoop* event_loop) const;
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mutable PBD::Signal0<void> PeaksReady;
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mutable PBD::Signal2<void,framepos_t,framepos_t> PeakRangeReady;
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XMLNode& get_state ();
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int set_state (const XMLNode&, int version);
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int rename_peakfile (Glib::ustring newpath);
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void touch_peakfile ();
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static void set_build_missing_peakfiles (bool yn) {
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_build_missing_peakfiles = yn;
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}
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static void set_build_peakfiles (bool yn) {
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_build_peakfiles = yn;
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}
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static bool get_build_peakfiles () {
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return _build_peakfiles;
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}
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virtual int setup_peakfile () { return 0; }
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int prepare_for_peakfile_writes ();
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void done_with_peakfile_writes (bool done = true);
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protected:
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static bool _build_missing_peakfiles;
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static bool _build_peakfiles;
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framecnt_t _length;
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bool _peaks_built;
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mutable Glib::Mutex _peaks_ready_lock;
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Glib::ustring peakpath;
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Glib::ustring _captured_for;
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mutable uint32_t _read_data_count; // modified in read()
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mutable uint32_t _write_data_count; // modified in write()
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int initialize_peakfile (bool newfile, Glib::ustring path);
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int build_peaks_from_scratch ();
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int compute_and_write_peaks (Sample* buf, framepos_t first_frame, framecnt_t cnt,
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bool force, bool intermediate_peaks_ready_signal);
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void truncate_peakfile();
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mutable off_t _peak_byte_max; // modified in compute_and_write_peak()
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virtual framecnt_t read_unlocked (Sample *dst, framepos_t start, framecnt_t cnt) const = 0;
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virtual framecnt_t write_unlocked (Sample *dst, framecnt_t cnt) = 0;
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virtual Glib::ustring peak_path(Glib::ustring audio_path) = 0;
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virtual Glib::ustring find_broken_peakfile (Glib::ustring missing_peak_path,
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Glib::ustring audio_path) = 0;
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virtual int read_peaks_with_fpp (PeakData *peaks,
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framecnt_t npeaks, framepos_t start, framecnt_t cnt,
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double samples_per_visual_peak, framecnt_t fpp) const;
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int compute_and_write_peaks (Sample* buf, framepos_t first_frame, framecnt_t cnt,
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bool force, bool intermediate_peaks_ready_signal,
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framecnt_t frames_per_peak);
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private:
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int peakfile;
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framecnt_t peak_leftover_cnt;
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framecnt_t peak_leftover_size;
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Sample* peak_leftovers;
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framepos_t peak_leftover_frame;
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};
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}
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#endif /* __ardour_audio_source_h__ */
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