X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Faudiosource.h;h=d5c85a6bf8068cce50a312cd6ad0ef2e4fc5e07f;hb=5bc4e54b7da3eb139d699c6e371d43540c69b519;hp=d097025e522cba869b1c31cad38c0c3642c515aa;hpb=3b89d9eaa03406a5e03648f47734211f09b89d62;p=ardour.git diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h index d097025e52..d5c85a6bf8 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 @@ -21,18 +21,19 @@ #define __ardour_audio_source_h__ #include +#include #include #include -#include -#include - -#include +#include +#include #include "ardour/source.h" #include "ardour/ardour.h" -#include "pbd/stateful.h" +#include "ardour/readable.h" +#include "pbd/file_manager.h" +#include "pbd/stateful.h" #include "pbd/xml++.h" namespace ARDOUR { @@ -42,46 +43,44 @@ class AudioSource : virtual public Source, public boost::enable_shared_from_this { public: - AudioSource (Session&, Glib::ustring name); + AudioSource (Session&, std::string name); AudioSource (Session&, const XMLNode&); virtual ~AudioSource (); - nframes64_t readable_length() const { return _length; } - uint32_t n_channels() const { return 1; } - - sframes_t length (sframes_t pos) const; - void update_length (sframes_t pos, sframes_t cnt); + framecnt_t readable_length() const { return _length; } + virtual uint32_t n_channels() const { return 1; } + + virtual bool empty() const; + framecnt_t length (framepos_t pos) const; + void update_length (framecnt_t cnt); - virtual nframes_t available_peaks (double zoom) const; + virtual framecnt_t available_peaks (double zoom) const; - virtual nframes_t read (Sample *dst, sframes_t start, nframes_t cnt, int channel=0) const; - virtual nframes_t write (Sample *src, nframes_t cnt); + 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_streaming_write_completed () {} + virtual void mark_streaming_write_completed (); 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; } - 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, framecnt_t npeaks, + framepos_t start, framecnt_t cnt, double samples_per_visual_peak) const; - int read_peaks (PeakData *peaks, nframes_t npeaks, - sframes_t start, nframes_t cnt, double samples_per_visual_peak) const; + int build_peaks (); + bool peaks_ready (boost::function callWhenReady, PBD::ScopedConnection** connection_created_if_not_ready, PBD::EventLoop* event_loop) 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) { @@ -101,48 +100,72 @@ class AudioSource : virtual public Source, 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; - sframes_t _length; - bool _peaks_built; - mutable Glib::Mutex _peaks_ready_lock; - Glib::ustring peakpath; - Glib::ustring _captured_for; + 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. + */ - mutable uint32_t _read_data_count; // modified in read() - mutable uint32_t _write_data_count; // modified in write() + static std::vector > _mixdown_buffers; + static std::vector > _gain_buffers; + static Glib::Threads::Mutex _level_buffer_lock; - int initialize_peakfile (bool newfile, Glib::ustring path); + 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, sframes_t first_frame, nframes_t cnt, - bool force, bool intermediate_peaks_ready_signal); + 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 nframes_t read_unlocked (Sample *dst, sframes_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; - - virtual int read_peaks_with_fpp (PeakData *peaks, - nframes_t npeaks, sframes_t start, nframes_t cnt, - double samples_per_visual_peak, nframes_t fpp) const; + 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); } - int compute_and_write_peaks (Sample* buf, sframes_t first_frame, nframes_t cnt, - bool force, bool intermediate_peaks_ready_signal, nframes_t frames_per_peak); + 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; - private: - int peakfile; - nframes_t peak_leftover_cnt; - nframes_t peak_leftover_size; - Sample* peak_leftovers; - nframes_t peak_leftover_frame; + 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); - 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; + + 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; }; }