X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Faudiosource.h;h=6df41462598faa69f520b02ca2dfda0514279f03;hb=e5a181c323243a03338f5a9934a5df254986370d;hp=4f4645190795cd1513d2bd78d66afca373fa122e;hpb=aae367b63c9b619db1e40f27dc334c6987219481;p=ardour.git diff --git a/libs/ardour/ardour/audiosource.h b/libs/ardour/ardour/audiosource.h index 4f46451907..6df4146259 100644 --- a/libs/ardour/ardour/audiosource.h +++ b/libs/ardour/ardour/audiosource.h @@ -21,66 +21,66 @@ #define __ardour_audio_source_h__ #include +#include #include #include -#include -#include +#include #include +#include #include "ardour/source.h" #include "ardour/ardour.h" +#include "ardour/readable.h" #include "pbd/stateful.h" #include "pbd/xml++.h" namespace ARDOUR { -class AudioSource : virtual public Source, +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 (); - nframes64_t readable_length() const { return _length; } - uint32_t n_channels() const { return 1; } + samplecnt_t readable_length() const { return _length; } + virtual uint32_t n_channels() const { return 1; } - sframes_t length (sframes_t pos) const; - void update_length (sframes_t pos, sframes_t cnt); + virtual bool empty() const; + samplecnt_t length (samplepos_t pos) const; + void update_length (samplecnt_t cnt); - virtual nframes_t available_peaks (double zoom) const; + virtual samplecnt_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 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_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; } - 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, nframes_t npeaks, - sframes_t start, nframes_t cnt, double samples_per_visual_peak) const; + int read_peaks (PeakData *peaks, samplecnt_t npeaks, + samplepos_t start, samplecnt_t cnt, double samples_per_visual_peak) const; int build_peaks (); - bool peaks_ready (boost::function callWhenReady, PBD::Connection& connection_created_if_not_ready) const; + bool peaks_ready (boost::function callWhenReady, PBD::ScopedConnection** connection_created_if_not_ready, PBD::EventLoop* event_loop) const; mutable PBD::Signal0 PeaksReady; - mutable PBD::Signal2 PeakRangeReady; + mutable PBD::Signal2 PeakRangeReady; XMLNode& get_state (); 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) { @@ -96,50 +96,79 @@ class AudioSource : virtual public Source, } 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; - sframes_t _length; - bool _peaks_built; - 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, sframes_t first_frame, nframes_t cnt, + 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, 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 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; 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; + 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, sframes_t first_frame, nframes_t cnt, - bool force, bool intermediate_peaks_ready_signal, nframes_t frames_per_peak); + 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); private: - int peakfile; - nframes_t peak_leftover_cnt; - nframes_t peak_leftover_size; - Sample* peak_leftovers; - nframes_t peak_leftover_frame; + 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; }; }