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Diffstat (limited to 'libs/ardour/ardour/diskstream.h')
| -rw-r--r-- | libs/ardour/ardour/diskstream.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/libs/ardour/ardour/diskstream.h b/libs/ardour/ardour/diskstream.h new file mode 100644 index 0000000000..9028f0d9e0 --- /dev/null +++ b/libs/ardour/ardour/diskstream.h @@ -0,0 +1,433 @@ +/* + 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 + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + $Id$ +*/ + +#ifndef __ardour_diskstream_h__ +#define __ardour_diskstream_h__ + +#include <sigc++/signal.h> + +#include <cmath> +#include <string> +#include <queue> +#include <map> +#include <vector> + +#include <time.h> + +#include <pbd/fastlog.h> +#include <pbd/ringbufferNPT.h> +#include <pbd/atomic.h> + +#include <ardour/ardour.h> +#include <ardour/configuration.h> +#include <ardour/session.h> +#include <ardour/route_group.h> +#include <ardour/route.h> +#include <ardour/port.h> +#include <ardour/utils.h> +#include <ardour/stateful.h> + +struct tm; + +namespace ARDOUR { + +class AudioEngine; +class Send; +class Session; +class AudioPlaylist; +class FileSource; +class IO; + +class DiskStream : public Stateful, public sigc::trackable +{ + public: + enum Flag { + Recordable = 0x1, + Hidden = 0x2 + }; + + DiskStream (Session &, const string& name, Flag f = Recordable); + DiskStream (Session &, const XMLNode&); + + string name() const { return _name; } + + ARDOUR::IO* io() const { return _io; } + void set_io (ARDOUR::IO& io); + + DiskStream& ref() { _refcnt++; return *this; } + void unref() { if (_refcnt) _refcnt--; if (_refcnt == 0) delete this; } + uint32_t refcnt() const { return _refcnt; } + + float playback_buffer_load() const; + float capture_buffer_load() const; + + void set_flag (Flag f) { + _flags |= f; + } + + void unset_flag (Flag f) { + _flags &= ~f; + } + + AlignStyle alignment_style() const { return _alignment_style; } + void set_align_style (AlignStyle); + void set_persistent_align_style (AlignStyle); + + bool hidden() const { return _flags & Hidden; } + bool recordable() const { return _flags & Recordable; } + + jack_nframes_t roll_delay() const { return _roll_delay; } + void set_roll_delay (jack_nframes_t); + + void set_name (string str, void* src); + + string input_source (uint32_t n=0) const { + if (n < channels.size()) { + return channels[n].source ? channels[n].source->name() : ""; + } else { + return ""; + } + } + + Port *input_source_port (uint32_t n=0) const { + if (n < channels.size()) return channels[n].source; return 0; + } + + void set_record_enabled (bool yn, void *src); + bool record_enabled() const { return atomic_read (&_record_enabled); } + void punch_in (); + void punch_out (); + + bool reversed() const { return _actual_speed < 0.0f; } + float speed() const { return _visible_speed; } + void set_speed (float); + + float peak_power(uint32_t n=0) { + float x = channels[n].peak_power; + channels[n].peak_power = 0.0f; + if (x > 0.0f) { + return 20.0f * fast_log10(x); + } else { + return minus_infinity(); + } + } + + int use_playlist (AudioPlaylist *); + int use_new_playlist (); + int use_copy_playlist (); + + void start_scrub (jack_nframes_t where); + void end_scrub (); + + Sample *playback_buffer (uint32_t n=0) { + if (n < channels.size()) + return channels[n].current_playback_buffer; + return 0; + } + + Sample *capture_buffer (uint32_t n=0) { + if (n < channels.size()) + return channels[n].current_capture_buffer; + return 0; + } + + AudioPlaylist *playlist () { return _playlist; } + + FileSource *fades_source (uint32_t n=0) { + if (n < channels.size()) + return channels[n].fades_source; + return 0; + } + FileSource *write_source (uint32_t n=0) { + if (n < channels.size()) + return channels[n].write_source; + return 0; + } + + jack_nframes_t current_capture_start() const { return capture_start_frame; } + jack_nframes_t current_capture_end() const { return capture_start_frame + capture_captured; } + jack_nframes_t get_capture_start_frame (uint32_t n=0); + jack_nframes_t get_captured_frames (uint32_t n=0); + + uint32_t n_channels() { return _n_channels; } + + int add_channel (); + int remove_channel (); + + static void set_disk_io_chunk_frames (uint32_t n) { + disk_io_chunk_frames = n; + } + + static jack_nframes_t disk_io_frames() { return disk_io_chunk_frames; } + + sigc::signal<void,void*> record_enable_changed; + sigc::signal<void> speed_changed; + sigc::signal<void,void*> reverse_changed; + sigc::signal<void> PlaylistChanged; + sigc::signal<void> AlignmentStyleChanged; + + static sigc::signal<void> DiskOverrun; + static sigc::signal<void> DiskUnderrun; + static sigc::signal<void,DiskStream*> DiskStreamCreated; // XXX use a ref with sigc2 + static sigc::signal<void,DiskStream*> CannotRecordNoInput; // XXX use a ref with sigc2 + static sigc::signal<void,list<Source*>*> DeleteSources; + + /* stateful */ + + XMLNode& get_state(void); + int set_state(const XMLNode& node); + + void monitor_input (bool); + + jack_nframes_t capture_offset() const { return _capture_offset; } + void set_capture_offset (); + + static void swap_by_ptr (Sample *first, Sample *last) { + while (first < last) { + Sample tmp = *first; + *first++ = *last; + *last-- = tmp; + } + } + + static void swap_by_ptr (Sample *first, Sample *last, jack_nframes_t n) { + while (n--) { + Sample tmp = *first; + *first++ = *last; + *last-- = tmp; + } + } + + bool slaved() const { return _slaved; } + void set_slaved(bool yn) { _slaved = yn; } + + int set_loop (Location *loc); + sigc::signal<void,Location *> LoopSet; + + std::list<Region*>& last_capture_regions () { + return _last_capture_regions; + } + + void handle_input_change (IOChange, void *src); + + id_t id() const { return _id; } + + XMLNode* deprecated_io_node; + + protected: + friend class Session; + + /* the Session is the only point of access for these + because they require that the Session is "inactive" + while they are called. + */ + + void set_pending_overwrite (bool); + int overwrite_existing_buffers (); + void reverse_scrub_buffer (bool to_forward); + void set_block_size (jack_nframes_t); + int internal_playback_seek (jack_nframes_t distance); + int can_internal_playback_seek (jack_nframes_t distance); + void reset_write_sources (bool); + void non_realtime_input_change (); + + uint32_t read_data_count() const { return _read_data_count; } + uint32_t write_data_count() const { return _write_data_count; } + + protected: + friend class Auditioner; + int seek (jack_nframes_t which_sample, bool complete_refill = false); + + protected: + friend class AudioTrack; + + void prepare (); + int process (jack_nframes_t transport_frame, jack_nframes_t nframes, jack_nframes_t offset, bool can_record, bool rec_monitors_input); + bool commit (jack_nframes_t nframes); + void recover (); /* called if commit will not be called, but process was */ + + private: + + /* use unref() to destroy a diskstream */ + + ~DiskStream(); + + struct ChannelInfo { + + Sample *playback_wrap_buffer; + Sample *capture_wrap_buffer; + Sample *speed_buffer; + + float peak_power; + + FileSource *fades_source; + FileSource *write_source; + + Port *source; + Sample *current_capture_buffer; + Sample *current_playback_buffer; + + RingBufferNPT<Sample> *playback_buf; + RingBufferNPT<Sample> *capture_buf; + + Sample* scrub_buffer; + Sample* scrub_forward_buffer; + Sample* scrub_reverse_buffer; + + RingBufferNPT<Sample>::rw_vector playback_vector; + RingBufferNPT<Sample>::rw_vector capture_vector; + }; + + typedef vector<ChannelInfo> ChannelList; + + string _name; + ARDOUR::Session& _session; + ARDOUR::IO* _io; + ChannelList channels; + uint32_t _n_channels; + id_t _id; + + atomic_t _record_enabled; + bool rec_monitoring_off_for_roll; + AudioPlaylist* _playlist; + float _visible_speed; + float _actual_speed; + /* items needed for speed change logic */ + bool _buffer_reallocation_required; + bool _seek_required; + + bool force_refill; + jack_nframes_t capture_start_frame; + jack_nframes_t capture_captured; + bool was_recording; + jack_nframes_t adjust_capture_position; + jack_nframes_t _capture_offset; + jack_nframes_t _roll_delay; + jack_nframes_t first_recordable_frame; + jack_nframes_t last_recordable_frame; + int last_possibly_recording; + AlignStyle _alignment_style; + bool _scrubbing; + bool _slaved; + bool _processed; + Location* loop_location; + jack_nframes_t overwrite_frame; + off_t overwrite_offset; + bool pending_overwrite; + bool overwrite_queued; + IOChange input_change_pending; + jack_nframes_t wrap_buffer_size; + jack_nframes_t speed_buffer_size; + + uint64_t last_phase; + uint64_t phi; + + jack_nframes_t file_frame; + jack_nframes_t playback_sample; + jack_nframes_t playback_distance; + + uint32_t _read_data_count; + uint32_t _write_data_count; + + bool in_set_state; + AlignStyle _persistent_alignment_style; + bool first_input_change; + + PBD::NonBlockingLock state_lock; + + jack_nframes_t scrub_start; + jack_nframes_t scrub_buffer_size; + jack_nframes_t scrub_offset; + uint32_t _refcnt; + + sigc::connection ports_created_c; + sigc::connection plmod_connection; + sigc::connection plstate_connection; + sigc::connection plgone_connection; + + /* the two central butler operations */ + + int do_flush (bool force = false); + int do_refill (Sample *mixdown_buffer, float *gain_buffer); + + int read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, jack_nframes_t& start, jack_nframes_t cnt, + ChannelInfo& channel_info, int channel, bool reversed); + + uint32_t i_am_the_modifier; + + /* XXX fix this redundancy ... */ + + void playlist_changed (Change); + void playlist_modified (); + void playlist_deleted (Playlist*); + void session_controls_changed (Session::ControlType); + + void finish_capture (bool rec_monitors_input); + void clean_up_capture (struct tm&, time_t, bool abort); + void transport_stopped (struct tm&, time_t, bool abort); + + struct CaptureInfo { + uint32_t start; + uint32_t frames; + }; + + vector<CaptureInfo*> capture_info; + PBD::Lock capture_info_lock; + + void init (Flag); + + void init_channel (ChannelInfo &chan); + void destroy_channel (ChannelInfo &chan); + + static jack_nframes_t disk_io_chunk_frames; + + int use_new_write_source (uint32_t n=0); + int use_new_fade_source (uint32_t n=0); + + int find_and_use_playlist (const string&); + + void allocate_temporary_buffers (); + + unsigned char _flags; + + int create_input_port (); + int connect_input_port (); + int seek_unlocked (jack_nframes_t which_sample); + + int ports_created (); + + bool realtime_set_speed (float, bool global_change); + void non_realtime_set_speed (); + + std::list<Region*> _last_capture_regions; + std::vector<FileSource*> capturing_sources; + int use_pending_capture_data (XMLNode& node); + + void get_input_sources (); + + void check_record_status (jack_nframes_t transport_frame, jack_nframes_t nframes, bool can_record); + + void set_align_style_from_io(); + +}; + +}; /* namespace ARDOUR */ + +#endif /* __ardour_diskstream_h__ */ |