X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Faudiosource.h;h=6df41462598faa69f520b02ca2dfda0514279f03;hb=8a4518d76fe78e5fb99900ff5ff71a22e5912395;hp=f02b28d9f594ff1f7a7e8460b5b5f874cdb4b60f;hpb=0051f92a4cc12e942c4330be63b262a085dd814b;p=ardour.git diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h index f02b28d9f5..6df4146259 100644 --- a/libs/ardour/ardour/audiosource.h +++ b/libs/ardour/ardour/audiosource.h @@ -1,5 +1,5 @@ /* - 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 @@ -20,69 +20,67 @@ #ifndef __ardour_audio_source_h__ #define __ardour_audio_source_h__ -#include -#include - #include +#include #include #include -#include -#include - -#include +#include +#include +#include -#include -#include -#include -#include - -using std::list; -using std::vector; +#include "ardour/source.h" +#include "ardour/ardour.h" +#include "ardour/readable.h" +#include "pbd/stateful.h" +#include "pbd/xml++.h" namespace ARDOUR { -const nframes_t frames_per_peak = 256; - - class AudioSource : public Source, public boost::enable_shared_from_this +class LIBARDOUR_API AudioSource : virtual public Source, + public ARDOUR::Readable, + public boost::enable_shared_from_this { public: - AudioSource (Session&, Glib::ustring name); + AudioSource (Session&, const std::string& name); AudioSource (Session&, const XMLNode&); virtual ~AudioSource (); - /* returns the number of items in this `audio_source' */ + samplecnt_t readable_length() const { return _length; } + virtual uint32_t n_channels() const { return 1; } - virtual nframes_t available_peaks (double zoom) const; + virtual bool empty() const; + samplecnt_t length (samplepos_t pos) const; + void update_length (samplecnt_t cnt); - virtual nframes_t read (Sample *dst, nframes_t start, nframes_t cnt) const; - virtual nframes_t write (Sample *src, nframes_t cnt); + virtual samplecnt_t available_peaks (double zoom) const; + + virtual samplecnt_t read (Sample *dst, samplepos_t start, samplecnt_t cnt, int channel=0) const; + virtual samplecnt_t write (Sample *src, samplecnt_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 (const Lock& lock); virtual bool can_truncate_peaks() const { return true; } - void set_captured_for (Glib::ustring str) { _captured_for = str; } - Glib::ustring captured_for() const { return _captured_for; } + void set_captured_for (std::string str) { _captured_for = str; } + std::string captured_for() const { return _captured_for; } + + int read_peaks (PeakData *peaks, samplecnt_t npeaks, + samplepos_t start, samplecnt_t cnt, double samples_per_visual_peak) const; - uint32_t read_data_count() const { return _read_data_count; } - uint32_t write_data_count() const { return _write_data_count; } + int build_peaks (); + bool peaks_ready (boost::function callWhenReady, PBD::ScopedConnection** connection_created_if_not_ready, PBD::EventLoop* event_loop) const; - virtual int read_peaks (PeakData *peaks, nframes_t npeaks, nframes_t start, nframes_t cnt, double samples_per_unit) const; - int build_peaks (); - bool peaks_ready (sigc::slot, sigc::connection&) const; + mutable PBD::Signal0 PeaksReady; + mutable PBD::Signal2 PeakRangeReady; - mutable sigc::signal PeaksReady; - mutable sigc::signal PeakRangeReady; - XMLNode& get_state (); - int set_state (const XMLNode&); + int set_state (const XMLNode&, int version); - int rename_peakfile (Glib::ustring newpath); + int rename_peakfile (std::string newpath); void touch_peakfile (); static void set_build_missing_peakfiles (bool yn) { @@ -98,45 +96,79 @@ const nframes_t frames_per_peak = 256; } virtual int setup_peakfile () { return 0; } + int close_peakfile (); 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 (samplecnt_t framerate); + protected: static bool _build_missing_peakfiles; static bool _build_peakfiles; - bool _peaks_built; - mutable Glib::Mutex _lock; - mutable Glib::Mutex _peaks_ready_lock; - Glib::ustring peakpath; - Glib::ustring _captured_for; + /* 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 > _mixdown_buffers; + static std::vector > _gain_buffers; + static Glib::Threads::Mutex _level_buffer_lock; + + static void ensure_buffers_for_level (uint32_t, samplecnt_t); + static void ensure_buffers_for_level_locked (uint32_t, samplecnt_t); - mutable uint32_t _read_data_count; // modified in read() - mutable uint32_t _write_data_count; // modified in write() + samplecnt_t _length; + std::string _peakpath; + std::string _captured_for; - int initialize_peakfile (bool newfile, Glib::ustring path); + int initialize_peakfile (const std::string& path, const bool in_session = false); int build_peaks_from_scratch (); - int compute_and_write_peaks (Sample* buf, nframes_t first_frame, nframes_t cnt, bool force, bool intermediate_peaks_ready_signal); + int compute_and_write_peaks (Sample* buf, samplecnt_t first_sample, samplecnt_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 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 Glib::ustring peak_path(Glib::ustring audio_path) = 0; - virtual Glib::ustring find_broken_peakfile (Glib::ustring missing_peak_path, Glib::ustring audio_path) = 0; - - void update_length (nframes_t pos, nframes_t cnt); + virtual samplecnt_t read_unlocked (Sample *dst, samplepos_t start, samplecnt_t cnt) const = 0; + virtual samplecnt_t write_unlocked (Sample *dst, samplecnt_t cnt) = 0; + virtual std::string construct_peak_filepath (const std::string& audio_path, const bool in_session = false, const bool old_peak_name = false) const = 0; - private: - int peakfile; - nframes_t peak_leftover_cnt; - nframes_t peak_leftover_size; - Sample* peak_leftovers; - nframes_t peak_leftover_frame; + virtual int read_peaks_with_fpp (PeakData *peaks, + samplecnt_t npeaks, samplepos_t start, samplecnt_t cnt, + double samples_per_visual_peak, samplecnt_t fpp) const; + + int compute_and_write_peaks (Sample* buf, samplecnt_t first_sample, samplecnt_t cnt, + bool force, bool intermediate_peaks_ready_signal, + samplecnt_t samples_per_peak); - bool file_changed (Glib::ustring path); + private: + 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; + Glib::Threads::Mutex _initialize_peaks_lock; + + int _peakfile_fd; + samplecnt_t peak_leftover_cnt; + samplecnt_t peak_leftover_size; + Sample* peak_leftovers; + samplepos_t peak_leftover_sample; + + mutable bool _first_run; + mutable double _last_scale; + mutable off_t _last_map_off; + mutable size_t _last_raw_map_length; + mutable boost::scoped_array peak_cache; }; }