/*
- Copyright (C) 2000-2006 Paul Davis
+ Copyright (C) 2000-2006 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: diskstream.cc 567 2006-06-07 14:54:12Z trutkin $
*/
#include <fstream>
#include <sys/stat.h>
#include <sys/mman.h>
-#include <sigc++/bind.h>
-
-#include <pbd/error.h>
-#include <pbd/basename.h>
-#include <glibmm/thread.h>
-#include <pbd/xml++.h>
-
-#include <ardour/ardour.h>
-#include <ardour/audioengine.h>
-#include <ardour/diskstream.h>
-#include <ardour/utils.h>
-#include <ardour/configuration.h>
-#include <ardour/audiofilesource.h>
-#include <ardour/destructive_filesource.h>
-#include <ardour/send.h>
-#include <ardour/playlist.h>
-#include <ardour/cycle_timer.h>
-#include <ardour/region.h>
+#include <glibmm/threads.h>
+
+#include "pbd/error.h"
+#include "pbd/basename.h"
+#include "pbd/memento_command.h"
+#include "pbd/xml++.h"
+#include "pbd/stacktrace.h"
+
+#include "ardour/debug.h"
+#include "ardour/diskstream.h"
+#include "ardour/io.h"
+#include "ardour/pannable.h"
+#include "ardour/playlist.h"
+#include "ardour/session.h"
+#include "ardour/track.h"
#include "i18n.h"
#include <locale.h>
using namespace ARDOUR;
using namespace PBD;
-/* XXX This goes uninitialized when there is no ~/.ardour2 directory.
+/* XXX This goes uninitialized when there is no ~/.config/ardour3 directory.
* I can't figure out why, so this will do for now (just stole the
* default from configuration_vars.h). 0 is not a good value for
* allocating buffer sizes..
*/
-nframes_t Diskstream::disk_io_chunk_frames = 1024 * 256;
+ARDOUR::framecnt_t Diskstream::disk_io_chunk_frames = 1024 * 256 / sizeof (Sample);
-sigc::signal<void,list<boost::shared_ptr<Source> >*> Diskstream::DeleteSources;
-sigc::signal<void> Diskstream::DiskOverrun;
-sigc::signal<void> Diskstream::DiskUnderrun;
+PBD::Signal0<void> Diskstream::DiskOverrun;
+PBD::Signal0<void> Diskstream::DiskUnderrun;
Diskstream::Diskstream (Session &sess, const string &name, Flag flag)
- : _name (name)
- , _session (sess)
- , _playlist(NULL)
+ : SessionObject(sess, name)
+ , i_am_the_modifier (0)
+ , _track (0)
+ , _record_enabled (0)
+ , _visible_speed (1.0f)
+ , _actual_speed (1.0f)
+ , _buffer_reallocation_required (false)
+ , _seek_required (false)
+ , capture_start_frame (0)
+ , capture_captured (0)
+ , was_recording (false)
+ , adjust_capture_position (0)
+ , _capture_offset (0)
+ , _roll_delay (0)
+ , first_recordable_frame (max_framepos)
+ , last_recordable_frame (max_framepos)
+ , last_possibly_recording (0)
+ , _alignment_style (ExistingMaterial)
+ , _alignment_choice (Automatic)
+ , _slaved (false)
+ , loop_location (0)
+ , overwrite_frame (0)
+ , overwrite_offset (0)
+ , _pending_overwrite (false)
+ , overwrite_queued (false)
+ , wrap_buffer_size (0)
+ , speed_buffer_size (0)
+ , _speed (1.0)
+ , _target_speed (_speed)
+ , file_frame (0)
+ , playback_sample (0)
+ , in_set_state (false)
+ , _flags (flag)
+ , deprecated_io_node (0)
{
- init (flag);
-}
-
-Diskstream::Diskstream (Session& sess, const XMLNode& node)
- : _session (sess)
- , _playlist(NULL)
-{
- init (Recordable);
}
-void
-Diskstream::init (Flag f)
+Diskstream::Diskstream (Session& sess, const XMLNode& /*node*/)
+ : SessionObject(sess, "unnamed diskstream")
+ , i_am_the_modifier (0)
+ , _track (0)
+ , _record_enabled (0)
+ , _visible_speed (1.0f)
+ , _actual_speed (1.0f)
+ , _buffer_reallocation_required (false)
+ , _seek_required (false)
+ , capture_start_frame (0)
+ , capture_captured (0)
+ , was_recording (false)
+ , adjust_capture_position (0)
+ , _capture_offset (0)
+ , _roll_delay (0)
+ , first_recordable_frame (max_framepos)
+ , last_recordable_frame (max_framepos)
+ , last_possibly_recording (0)
+ , _alignment_style (ExistingMaterial)
+ , _alignment_choice (Automatic)
+ , _slaved (false)
+ , loop_location (0)
+ , overwrite_frame (0)
+ , overwrite_offset (0)
+ , _pending_overwrite (false)
+ , overwrite_queued (false)
+ , wrap_buffer_size (0)
+ , speed_buffer_size (0)
+ , _speed (1.0)
+ , _target_speed (_speed)
+ , file_frame (0)
+ , playback_sample (0)
+ , in_set_state (false)
+ , _flags (Recordable)
+ , deprecated_io_node (0)
{
- _flags = f;
- _io = 0;
- _alignment_style = ExistingMaterial;
- _persistent_alignment_style = ExistingMaterial;
- first_input_change = true;
- i_am_the_modifier = 0;
- g_atomic_int_set (&_record_enabled, 0);
- was_recording = false;
- capture_start_frame = 0;
- capture_captured = 0;
- _visible_speed = 1.0f;
- _actual_speed = 1.0f;
- _buffer_reallocation_required = false;
- _seek_required = false;
- first_recordable_frame = max_frames;
- last_recordable_frame = max_frames;
- _roll_delay = 0;
- _capture_offset = 0;
- _processed = false;
- _slaved = false;
- adjust_capture_position = 0;
- last_possibly_recording = 0;
- loop_location = 0;
- wrap_buffer_size = 0;
- speed_buffer_size = 0;
- last_phase = 0;
- phi = (uint64_t) (0x1000000);
- file_frame = 0;
- playback_sample = 0;
- playback_distance = 0;
- _read_data_count = 0;
- _write_data_count = 0;
-
- pending_overwrite = false;
- overwrite_frame = 0;
- overwrite_queued = false;
- input_change_pending = NoChange;
-
- _n_channels = 0;
}
Diskstream::~Diskstream ()
{
- // Taken by derived class destrctors.. should assure locked here somehow?
- //Glib::Mutex::Lock lm (state_lock);
+ DEBUG_TRACE (DEBUG::Destruction, string_compose ("Diskstream %1 deleted\n", _name));
+
+ if (_playlist) {
+ _playlist->release ();
+ }
- if (_playlist)
- _playlist->unref ();
+ delete deprecated_io_node;
}
void
-Diskstream::set_io (IO& io)
+Diskstream::set_track (Track* t)
{
- _io = &io;
- set_align_style_from_io ();
+ _track = t;
+ _io = _track->input();
+
+ ic_connection.disconnect();
+ _io->changed.connect_same_thread (ic_connection, boost::bind (&Diskstream::handle_input_change, this, _1, _2));
+
+ if (_io->n_ports() != ChanCount::ZERO) {
+ input_change_pending.type = IOChange::Type (IOChange::ConfigurationChanged|IOChange::ConnectionsChanged);
+ non_realtime_input_change ();
+ }
+
+ _track->Destroyed.connect_same_thread (*this, boost::bind (&Diskstream::route_going_away, this));
}
void
-Diskstream::handle_input_change (IOChange change, void *src)
+Diskstream::handle_input_change (IOChange change, void * /*src*/)
{
- Glib::Mutex::Lock lm (state_lock);
+ Glib::Threads::Mutex::Lock lm (state_lock);
- if (!(input_change_pending & change)) {
- input_change_pending = IOChange (input_change_pending|change);
- _session.request_input_change_handling ();
- }
+ if (change.type & (IOChange::ConfigurationChanged|IOChange::ConnectionsChanged)) {
+
+ /* rather than handle this here on a DS-by-DS basis we defer to the
+ session transport/butler thread, and let it tackle
+ as many diskstreams as need it in one shot. this avoids many repeated
+ takings of the audioengine process lock.
+ */
+
+ if (!(input_change_pending.type & change.type)) {
+ input_change_pending.type = IOChange::Type (input_change_pending.type | change.type);
+ _session.request_input_change_handling ();
+ }
+ }
}
void
{
if (_buffer_reallocation_required)
{
- Glib::Mutex::Lock lm (state_lock);
+ Glib::Threads::Mutex::Lock lm (state_lock);
allocate_temporary_buffers ();
_buffer_reallocation_required = false;
if (_seek_required) {
if (speed() != 1.0f || speed() != -1.0f) {
- seek ((nframes_t) (_session.transport_frame() * (double) speed()), true);
+ seek ((framepos_t) (_session.transport_frame() * (double) speed()), true);
}
else {
seek (_session.transport_frame(), true);
{
bool changed = false;
double new_speed = sp * _session.transport_speed();
-
+
if (_visible_speed != sp) {
_visible_speed = sp;
changed = true;
}
-
+
if (new_speed != _actual_speed) {
-
- nframes_t required_wrap_size = (nframes_t) floor (_session.get_block_size() *
- fabs (new_speed)) + 1;
-
+
+ framecnt_t required_wrap_size = (framecnt_t) ceil (_session.get_block_size() *
+ fabs (new_speed)) + 2;
+
if (required_wrap_size > wrap_buffer_size) {
_buffer_reallocation_required = true;
}
-
+
_actual_speed = new_speed;
- phi = (uint64_t) (0x1000000 * fabs(_actual_speed));
+ _target_speed = fabs(_actual_speed);
}
if (changed) {
return _buffer_reallocation_required || _seek_required;
}
-void
-Diskstream::prepare ()
-{
- _processed = false;
- playback_distance = 0;
-}
-
-void
-Diskstream::recover ()
-{
- state_lock.unlock();
- _processed = false;
-}
-
void
Diskstream::set_capture_offset ()
{
return;
}
- _capture_offset = _io->input_latency();
+ _capture_offset = _io->latency();
+ DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1: using IO latency, capture offset set to %2\n", name(), _capture_offset));
}
+
void
-Diskstream::set_align_style (AlignStyle a)
+Diskstream::set_align_style (AlignStyle a, bool force)
{
if (record_enabled() && _session.actively_recording()) {
return;
}
- if (a != _alignment_style) {
+ if ((a != _alignment_style) || force) {
_alignment_style = a;
AlignmentStyleChanged ();
}
}
+void
+Diskstream::set_align_choice (AlignChoice a, bool force)
+{
+ if (record_enabled() && _session.actively_recording()) {
+ return;
+ }
+
+ if ((a != _alignment_choice) || force) {
+ _alignment_choice = a;
+
+ switch (_alignment_choice) {
+ case Automatic:
+ set_align_style_from_io ();
+ break;
+ case UseExistingMaterial:
+ set_align_style (ExistingMaterial);
+ break;
+ case UseCaptureTime:
+ set_align_style (CaptureTime);
+ break;
+ }
+ }
+}
+
int
Diskstream::set_loop (Location *location)
{
loop_location = location;
- LoopSet (location); /* EMIT SIGNAL */
+ LoopSet (location); /* EMIT SIGNAL */
return 0;
}
-nframes_t
-Diskstream::get_capture_start_frame (uint32_t n)
+/** Get the start position (in session frames) of the nth capture in the current pass */
+ARDOUR::framepos_t
+Diskstream::get_capture_start_frame (uint32_t n) const
{
- Glib::Mutex::Lock lm (capture_info_lock);
+ Glib::Threads::Mutex::Lock lm (capture_info_lock);
if (capture_info.size() > n) {
+ /* this is a completed capture */
return capture_info[n]->start;
- }
- else {
+ } else {
+ /* this is the currently in-progress capture */
return capture_start_frame;
}
}
-nframes_t
-Diskstream::get_captured_frames (uint32_t n)
+ARDOUR::framecnt_t
+Diskstream::get_captured_frames (uint32_t n) const
{
- Glib::Mutex::Lock lm (capture_info_lock);
+ Glib::Threads::Mutex::Lock lm (capture_info_lock);
if (capture_info.size() > n) {
+ /* this is a completed capture */
return capture_info[n]->frames;
- }
- else {
+ } else {
+ /* this is the currently in-progress capture */
return capture_captured;
}
}
void
-Diskstream::set_roll_delay (nframes_t nframes)
+Diskstream::set_roll_delay (ARDOUR::framecnt_t nframes)
{
_roll_delay = nframes;
}
-void
-Diskstream::set_speed (double sp)
+int
+Diskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
{
- _session.request_diskstream_speed (*this, sp);
+ if (!playlist) {
+ return 0;
+ }
- /* to force a rebuffering at the right place */
- playlist_modified();
-}
+ bool prior_playlist = false;
-int
-Diskstream::use_playlist (Playlist* playlist)
-{
{
- Glib::Mutex::Lock lm (state_lock);
+ Glib::Threads::Mutex::Lock lm (state_lock);
if (playlist == _playlist) {
return 0;
}
- plstate_connection.disconnect();
- plmod_connection.disconnect ();
- plgone_connection.disconnect ();
+ playlist_connections.drop_connections ();
if (_playlist) {
- _playlist->unref();
+ _playlist->release();
+ prior_playlist = true;
}
-
+
_playlist = playlist;
- _playlist->ref();
+ _playlist->use();
if (!in_set_state && recordable()) {
reset_write_sources (false);
}
-
- plstate_connection = _playlist->StateChanged.connect (mem_fun (*this, &Diskstream::playlist_changed));
- plmod_connection = _playlist->Modified.connect (mem_fun (*this, &Diskstream::playlist_modified));
- plgone_connection = _playlist->GoingAway.connect (bind (mem_fun (*this, &Diskstream::playlist_deleted), _playlist));
+
+ _playlist->ContentsChanged.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_modified, this));
+ _playlist->DropReferences.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_deleted, this, boost::weak_ptr<Playlist>(_playlist)));
+ _playlist->RangesMoved.connect_same_thread (playlist_connections, boost::bind (&Diskstream::playlist_ranges_moved, this, _1, _2));
}
- if (!overwrite_queued) {
- _session.request_overwrite_buffer (this);
+ /* don't do this if we've already asked for it *or* if we are setting up
+ the diskstream for the very first time - the input changed handling will
+ take care of the buffer refill.
+ */
+
+ if (!overwrite_queued && prior_playlist) {
+ _session.request_overwrite_buffer (_track);
overwrite_queued = true;
}
-
+
PlaylistChanged (); /* EMIT SIGNAL */
_session.set_dirty ();
}
void
-Diskstream::playlist_changed (Change ignored)
+Diskstream::playlist_changed (const PropertyChange&)
{
playlist_modified ();
}
Diskstream::playlist_modified ()
{
if (!i_am_the_modifier && !overwrite_queued) {
- _session.request_overwrite_buffer (this);
+ _session.request_overwrite_buffer (_track);
overwrite_queued = true;
- }
+ }
}
void
-Diskstream::playlist_deleted (Playlist* pl)
+Diskstream::playlist_deleted (boost::weak_ptr<Playlist> wpl)
{
- /* this catches an ordering issue with session destruction. playlists
- are destroyed before diskstreams. we have to invalidate any handles
- we have to the playlist.
- */
+ boost::shared_ptr<Playlist> pl (wpl.lock());
+
+ if (pl == _playlist) {
- _playlist = 0;
+ /* this catches an ordering issue with session destruction. playlists
+ are destroyed before diskstreams. we have to invalidate any handles
+ we have to the playlist.
+ */
+
+ if (_playlist) {
+ _playlist.reset ();
+ }
+ }
}
-int
-Diskstream::set_name (string str)
+bool
+Diskstream::set_name (const string& str)
{
- if (str != _name) {
+ if (_name != str) {
assert(playlist());
playlist()->set_name (str);
- _name = str;
-
- if (!in_set_state && recordable()) {
- /* rename existing capture files so that they have the correct name */
- return rename_write_sources ();
- } else {
- return -1;
+ SessionObject::set_name(str);
+ }
+ return true;
+}
+
+XMLNode&
+Diskstream::get_state ()
+{
+ XMLNode* node = new XMLNode ("Diskstream");
+ char buf[64];
+ LocaleGuard lg (X_("POSIX"));
+
+ node->add_property ("flags", enum_2_string (_flags));
+ node->add_property ("playlist", _playlist->name());
+ node->add_property("name", _name);
+ id().print (buf, sizeof (buf));
+ node->add_property("id", buf);
+ snprintf (buf, sizeof(buf), "%f", _visible_speed);
+ node->add_property ("speed", buf);
+ node->add_property ("capture-alignment", enum_2_string (_alignment_choice));
+
+ if (_extra_xml) {
+ node->add_child_copy (*_extra_xml);
+ }
+
+ return *node;
+}
+
+int
+Diskstream::set_state (const XMLNode& node, int /*version*/)
+{
+ const XMLProperty* prop;
+
+ if ((prop = node.property ("name")) != 0) {
+ _name = prop->value();
+ }
+
+ if (deprecated_io_node) {
+ set_id (*deprecated_io_node);
+ } else {
+ set_id (node);
+ }
+
+ if ((prop = node.property ("flags")) != 0) {
+ _flags = Flag (string_2_enum (prop->value(), _flags));
+ }
+
+ if ((prop = node.property (X_("capture-alignment"))) != 0) {
+ set_align_choice (AlignChoice (string_2_enum (prop->value(), _alignment_choice)), true);
+ } else {
+ set_align_choice (Automatic, true);
+ }
+
+ if ((prop = node.property ("playlist")) == 0) {
+ return -1;
+ }
+
+ if (find_and_use_playlist (prop->value())) {
+ return -1;
+ }
+
+ if ((prop = node.property ("speed")) != 0) {
+ double sp = atof (prop->value().c_str());
+
+ if (realtime_set_speed (sp, false)) {
+ non_realtime_set_speed ();
}
}
- return 0;
+ return 0;
+}
+
+void
+Diskstream::playlist_ranges_moved (list< Evoral::RangeMove<framepos_t> > const & movements_frames, bool from_undo)
+{
+ /* If we're coming from an undo, it will have handled
+ automation undo (it must, since automation-follows-regions
+ can lose automation data). Hence we can do nothing here.
+ */
+
+ if (from_undo) {
+ return;
+ }
+
+ if (!_track || Config->get_automation_follows_regions () == false) {
+ return;
+ }
+
+ list< Evoral::RangeMove<double> > movements;
+
+ for (list< Evoral::RangeMove<framepos_t> >::const_iterator i = movements_frames.begin();
+ i != movements_frames.end();
+ ++i) {
+
+ movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
+ }
+
+ /* move panner automation */
+ boost::shared_ptr<Pannable> pannable = _track->pannable();
+ Evoral::ControlSet::Controls& c (pannable->controls());
+
+ for (Evoral::ControlSet::Controls::iterator ci = c.begin(); ci != c.end(); ++ci) {
+ boost::shared_ptr<AutomationControl> ac = boost::dynamic_pointer_cast<AutomationControl>(ci->second);
+ if (!ac) {
+ continue;
+ }
+ boost::shared_ptr<AutomationList> alist = ac->alist();
+
+ XMLNode & before = alist->get_state ();
+ bool const things_moved = alist->move_ranges (movements);
+ if (things_moved) {
+ _session.add_command (new MementoCommand<AutomationList> (
+ *alist.get(), &before, &alist->get_state ()));
+ }
+ }
+
+ /* move processor automation */
+ _track->foreach_processor (boost::bind (&Diskstream::move_processor_automation, this, _1, movements_frames));
+}
+
+void
+Diskstream::move_processor_automation (boost::weak_ptr<Processor> p, list< Evoral::RangeMove<framepos_t> > const & movements_frames)
+{
+ boost::shared_ptr<Processor> processor (p.lock ());
+ if (!processor) {
+ return;
+ }
+
+ list< Evoral::RangeMove<double> > movements;
+ for (list< Evoral::RangeMove<framepos_t> >::const_iterator i = movements_frames.begin(); i != movements_frames.end(); ++i) {
+ movements.push_back(Evoral::RangeMove<double>(i->from, i->length, i->to));
+ }
+
+ set<Evoral::Parameter> const a = processor->what_can_be_automated ();
+
+ for (set<Evoral::Parameter>::iterator i = a.begin (); i != a.end (); ++i) {
+ boost::shared_ptr<AutomationList> al = processor->automation_control(*i)->alist();
+ XMLNode & before = al->get_state ();
+ bool const things_moved = al->move_ranges (movements);
+ if (things_moved) {
+ _session.add_command (
+ new MementoCommand<AutomationList> (
+ *al.get(), &before, &al->get_state ()
+ )
+ );
+ }
+ }
+}
+
+void
+Diskstream::check_record_status (framepos_t transport_frame, bool can_record)
+{
+ int possibly_recording;
+ int rolling;
+ int change;
+ const int transport_rolling = 0x4;
+ const int track_rec_enabled = 0x2;
+ const int global_rec_enabled = 0x1;
+ const int fully_rec_enabled = (transport_rolling|track_rec_enabled|global_rec_enabled);
+
+ /* merge together the 3 factors that affect record status, and compute
+ what has changed.
+ */
+
+ rolling = _session.transport_speed() != 0.0f;
+ possibly_recording = (rolling << 2) | (record_enabled() << 1) | can_record;
+ change = possibly_recording ^ last_possibly_recording;
+
+ if (possibly_recording == last_possibly_recording) {
+ return;
+ }
+
+ framecnt_t existing_material_offset = _session.worst_playback_latency();
+
+ if (possibly_recording == fully_rec_enabled) {
+
+ if (last_possibly_recording == fully_rec_enabled) {
+ return;
+ }
+
+ capture_start_frame = _session.transport_frame();
+ first_recordable_frame = capture_start_frame + _capture_offset;
+ last_recordable_frame = max_framepos;
+
+ DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1: @ %7 (%9) FRF = %2 CSF = %4 CO = %5, EMO = %6 RD = %8 WOL %10 WTL %11\n",
+ name(), first_recordable_frame, last_recordable_frame, capture_start_frame,
+ _capture_offset,
+ existing_material_offset,
+ transport_frame,
+ _roll_delay,
+ _session.transport_frame(),
+ _session.worst_output_latency(),
+ _session.worst_track_latency()));
+
+
+ if (_alignment_style == ExistingMaterial) {
+ first_recordable_frame += existing_material_offset;
+ DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("\tshift FRF by EMO %1\n",
+ first_recordable_frame));
+ }
+
+ prepare_record_status (capture_start_frame);
+
+ } else {
+
+ if (last_possibly_recording == fully_rec_enabled) {
+
+ /* we were recording last time */
+
+ if (change & transport_rolling) {
+
+ /* transport-change (stopped rolling): last_recordable_frame was set in ::prepare_to_stop(). We
+ had to set it there because we likely rolled past the stopping point to declick out,
+ and then backed up.
+ */
+
+ } else {
+ /* punch out */
+
+ last_recordable_frame = _session.transport_frame() + _capture_offset;
+
+ if (_alignment_style == ExistingMaterial) {
+ last_recordable_frame += existing_material_offset;
+ }
+ }
+ }
+ }
+
+ last_possibly_recording = possibly_recording;
}
void
-Diskstream::set_destructive (bool yn)
+Diskstream::route_going_away ()
{
- if (yn != destructive()) {
- reset_write_sources (true, true);
- if (yn) {
- _flags |= Destructive;
- } else {
- _flags &= ~Destructive;
+ _io.reset ();
+}
+
+void
+Diskstream::calculate_record_range (Evoral::OverlapType ot, framepos_t transport_frame, framecnt_t nframes,
+ framecnt_t & rec_nframes, framecnt_t & rec_offset)
+{
+ switch (ot) {
+ case Evoral::OverlapNone:
+ rec_nframes = 0;
+ break;
+
+ case Evoral::OverlapInternal:
+ /* ---------- recrange
+ |---| transrange
+ */
+ rec_nframes = nframes;
+ rec_offset = 0;
+ break;
+
+ case Evoral::OverlapStart:
+ /* |--------| recrange
+ -----| transrange
+ */
+ rec_nframes = transport_frame + nframes - first_recordable_frame;
+ if (rec_nframes) {
+ rec_offset = first_recordable_frame - transport_frame;
}
+ break;
+
+ case Evoral::OverlapEnd:
+ /* |--------| recrange
+ |-------- transrange
+ */
+ rec_nframes = last_recordable_frame - transport_frame;
+ rec_offset = 0;
+ break;
+
+ case Evoral::OverlapExternal:
+ /* |--------| recrange
+ -------------- transrange
+ */
+ rec_nframes = last_recordable_frame - first_recordable_frame;
+ rec_offset = first_recordable_frame - transport_frame;
+ break;
}
+
+ DEBUG_TRACE (DEBUG::CaptureAlignment, string_compose ("%1 rec? %2 @ %3 (for %4) FRF %5 LRF %6 : rf %7 @ %8\n",
+ _name, enum_2_string (ot), transport_frame, nframes,
+ first_recordable_frame, last_recordable_frame, rec_nframes, rec_offset));
}
+
+void
+Diskstream::prepare_to_stop (framepos_t pos)
+{
+ last_recordable_frame = pos + _capture_offset;
+}
+
+void
+Diskstream::engage_record_enable ()
+{
+ g_atomic_int_set (&_record_enabled, 1);
+}
+
+void
+Diskstream::disengage_record_enable ()
+{
+ g_atomic_int_set (&_record_enabled, 0);
+}
+