309 lines
9.4 KiB
C++
309 lines
9.4 KiB
C++
/*
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Copyright (C) 2000-2006 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_diskstream_h__
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#define __ardour_diskstream_h__
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#include <sigc++/signal.h>
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#include <cmath>
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#include <string>
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#include <queue>
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#include <map>
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#include <vector>
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#include <time.h>
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#include <pbd/fastlog.h>
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#include <pbd/ringbufferNPT.h>
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#include <pbd/stateful.h>
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#include <pbd/statefuldestructible.h>
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#include <ardour/ardour.h>
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#include <ardour/configuration.h>
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#include <ardour/session.h>
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#include <ardour/route_group.h>
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#include <ardour/route.h>
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#include <ardour/port.h>
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#include <ardour/utils.h>
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struct tm;
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namespace ARDOUR {
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class AudioEngine;
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class Send;
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class Session;
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class Playlist;
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class IO;
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class Diskstream : public SessionObject
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{
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public:
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enum Flag {
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Recordable = 0x1,
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Hidden = 0x2,
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Destructive = 0x4
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};
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Diskstream (Session &, const string& name, Flag f = Recordable);
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Diskstream (Session &, const XMLNode&);
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virtual ~Diskstream();
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bool set_name (const string& str);
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ARDOUR::IO* io() const { return _io; }
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void set_io (ARDOUR::IO& io);
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virtual float playback_buffer_load() const = 0;
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virtual float capture_buffer_load() const = 0;
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void set_flag (Flag f) { _flags = Flag (_flags | f); }
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void unset_flag (Flag f) { _flags = Flag (_flags & ~f); }
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AlignStyle alignment_style() const { return _alignment_style; }
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void set_align_style (AlignStyle);
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void set_persistent_align_style (AlignStyle a) { _persistent_alignment_style = a; }
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nframes_t roll_delay() const { return _roll_delay; }
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void set_roll_delay (nframes_t);
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bool record_enabled() const { return g_atomic_int_get (&_record_enabled); }
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virtual void set_record_enabled (bool yn) = 0;
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bool destructive() const { return _flags & Destructive; }
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virtual int set_destructive (bool yn) { return -1; }
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virtual bool can_become_destructive (bool& requires_bounce) const { return false; }
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bool hidden() const { return _flags & Hidden; }
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bool recordable() const { return _flags & Recordable; }
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bool reversed() const { return _actual_speed < 0.0f; }
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double speed() const { return _visible_speed; }
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virtual void punch_in() {}
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virtual void punch_out() {}
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void set_speed (double);
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void non_realtime_set_speed ();
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virtual void non_realtime_locate (nframes_t location) {};
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virtual void playlist_modified ();
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boost::shared_ptr<Playlist> playlist () { return _playlist; }
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virtual int use_playlist (boost::shared_ptr<Playlist>);
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virtual int use_new_playlist () = 0;
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virtual int use_copy_playlist () = 0;
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nframes_t current_capture_start() const { return capture_start_frame; }
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nframes_t current_capture_end() const { return capture_start_frame + capture_captured; }
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nframes_t get_capture_start_frame (uint32_t n=0);
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nframes_t get_captured_frames (uint32_t n=0);
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ChanCount n_channels() { return _n_channels; }
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static nframes_t disk_io_frames() { return disk_io_chunk_frames; }
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static void set_disk_io_chunk_frames (uint32_t n) { disk_io_chunk_frames = n; }
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/* Stateful */
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virtual XMLNode& get_state(void) = 0;
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virtual int set_state(const XMLNode& node) = 0;
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virtual void monitor_input (bool) {}
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nframes_t capture_offset() const { return _capture_offset; }
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virtual void set_capture_offset ();
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bool slaved() const { return _slaved; }
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void set_slaved(bool yn) { _slaved = yn; }
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int set_loop (Location *loc);
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std::list<boost::shared_ptr<Region> >& last_capture_regions () { return _last_capture_regions; }
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void handle_input_change (IOChange, void *src);
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void remove_region_from_last_capture (boost::weak_ptr<Region> wregion);
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sigc::signal<void> RecordEnableChanged;
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sigc::signal<void> SpeedChanged;
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sigc::signal<void> ReverseChanged;
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sigc::signal<void> PlaylistChanged;
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sigc::signal<void> AlignmentStyleChanged;
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sigc::signal<void,Location *> LoopSet;
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static sigc::signal<void> DiskOverrun;
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static sigc::signal<void> DiskUnderrun;
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protected:
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friend class Session;
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/* the Session is the only point of access for these because they require
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* that the Session is "inactive" while they are called.
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*/
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virtual void set_pending_overwrite (bool) = 0;
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virtual int overwrite_existing_buffers () = 0;
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virtual void set_block_size (nframes_t) = 0;
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virtual int internal_playback_seek (nframes_t distance) = 0;
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virtual int can_internal_playback_seek (nframes_t distance) = 0;
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virtual int rename_write_sources () = 0;
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virtual void reset_write_sources (bool, bool force = false) = 0;
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virtual void non_realtime_input_change () = 0;
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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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protected:
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friend class Auditioner;
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virtual int seek (nframes_t which_sample, bool complete_refill = false) = 0;
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protected:
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friend class Track;
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virtual void prepare ();
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virtual int process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input) = 0;
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virtual bool commit (nframes_t nframes) = 0;
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virtual void recover (); /* called if commit will not be called, but process was */
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//private:
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enum TransitionType {
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CaptureStart = 0,
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CaptureEnd
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};
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struct CaptureTransition {
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TransitionType type;
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nframes_t capture_val; ///< The start or end file frame position
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};
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/* The two central butler operations */
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virtual int do_flush (Session::RunContext context, bool force = false) = 0;
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virtual int do_refill () = 0;
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/** For non-butler contexts (allocates temporary working buffers) */
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virtual int do_refill_with_alloc() = 0;
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/* XXX fix this redundancy ... */
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virtual void playlist_changed (Change);
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virtual void playlist_deleted (boost::weak_ptr<Playlist>);
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virtual void transport_stopped (struct tm&, time_t, bool abort) = 0;
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virtual void transport_looped (nframes_t transport_frame) = 0;
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struct CaptureInfo {
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uint32_t start;
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uint32_t frames;
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};
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virtual void init (Flag);
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virtual int use_new_write_source (uint32_t n=0) = 0;
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virtual int find_and_use_playlist (const string&) = 0;
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virtual void allocate_temporary_buffers () = 0;
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virtual bool realtime_set_speed (double, bool global_change);
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std::list<boost::shared_ptr<Region> > _last_capture_regions;
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virtual int use_pending_capture_data (XMLNode& node) = 0;
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virtual void get_input_sources () = 0;
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virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record) = 0;
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virtual void set_align_style_from_io() {}
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virtual void setup_destructive_playlist () {}
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virtual void use_destructive_playlist () {}
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static nframes_t disk_io_chunk_frames;
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std::vector<CaptureInfo*> capture_info;
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Glib::Mutex capture_info_lock;
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uint32_t i_am_the_modifier;
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ARDOUR::IO* _io;
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ChanCount _n_channels;
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boost::shared_ptr<Playlist> _playlist;
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mutable gint _record_enabled;
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double _visible_speed;
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double _actual_speed;
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/* items needed for speed change logic */
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bool _buffer_reallocation_required;
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bool _seek_required;
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bool force_refill;
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nframes_t capture_start_frame;
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nframes_t capture_captured;
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bool was_recording;
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nframes_t adjust_capture_position;
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nframes_t _capture_offset;
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nframes_t _roll_delay;
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nframes_t first_recordable_frame;
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nframes_t last_recordable_frame;
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int last_possibly_recording;
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AlignStyle _alignment_style;
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bool _scrubbing;
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bool _slaved;
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bool _processed;
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Location* loop_location;
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nframes_t overwrite_frame;
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off_t overwrite_offset;
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bool pending_overwrite;
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bool overwrite_queued;
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IOChange input_change_pending;
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nframes_t wrap_buffer_size;
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nframes_t speed_buffer_size;
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uint64_t last_phase;
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uint64_t phi;
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uint64_t target_phi;
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nframes_t file_frame;
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nframes_t playback_sample;
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nframes_t playback_distance;
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bool commit_should_unlock;
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uint32_t _read_data_count;
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uint32_t _write_data_count;
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bool in_set_state;
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AlignStyle _persistent_alignment_style;
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bool first_input_change;
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Glib::Mutex state_lock;
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nframes_t scrub_start;
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nframes_t scrub_buffer_size;
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nframes_t scrub_offset;
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sigc::connection ports_created_c;
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sigc::connection plmod_connection;
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sigc::connection plgone_connection;
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Flag _flags;
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};
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}; /* namespace ARDOUR */
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#endif /* __ardour_diskstream_h__ */
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