Some improvements to performance with crossfades: don't recompute a whole track's...
[ardour.git] / libs / ardour / audio_diskstream.cc
index 0661cb27a95eb8543f5635887525742c1c7763c8..5c00f10f48fd4aee8c769c7fca071d5c8c712119 100644 (file)
 #include <sys/stat.h>
 #include <sys/mman.h>
 
-#include <pbd/error.h>
+#include "pbd/error.h"
 #include <glibmm/thread.h>
-#include <pbd/xml++.h>
-#include <pbd/memento_command.h>
-#include <pbd/enumwriter.h>
-#include <pbd/stacktrace.h>
-
-#include <ardour/ardour.h>
-#include <ardour/audioengine.h>
-#include <ardour/analyser.h>
-#include <ardour/audio_diskstream.h>
-#include <ardour/utils.h>
-#include <ardour/configuration.h>
-#include <ardour/audiofilesource.h>
-#include <ardour/send.h>
-#include <ardour/region_factory.h>
-#include <ardour/audioplaylist.h>
-#include <ardour/playlist_factory.h>
-#include <ardour/cycle_timer.h>
-#include <ardour/audioregion.h>
-#include <ardour/audio_port.h>
-#include <ardour/source_factory.h>
-#include <ardour/audio_buffer.h>
+#include "pbd/xml++.h"
+#include "pbd/memento_command.h"
+#include "pbd/enumwriter.h"
+#include "pbd/stacktrace.h"
+
+#include "ardour/ardour.h"
+#include "ardour/audioengine.h"
+#include "ardour/analyser.h"
+#include "ardour/audio_diskstream.h"
+#include "ardour/utils.h"
+#include "ardour/configuration.h"
+#include "ardour/audiofilesource.h"
+#include "ardour/send.h"
+#include "ardour/region_factory.h"
+#include "ardour/audioplaylist.h"
+#include "ardour/playlist_factory.h"
+#include "ardour/cycle_timer.h"
+#include "ardour/audioregion.h"
+#include "ardour/audio_port.h"
+#include "ardour/source_factory.h"
+#include "ardour/audio_buffer.h"
+#include "ardour/session.h"
+#include "ardour/io.h"
 
 #include "i18n.h"
 #include <locale.h>
@@ -171,10 +173,10 @@ AudioDiskstream::non_realtime_input_change ()
                        
                        _n_channels.set(DataType::AUDIO, c->size());
                        
-                       if (_io->n_inputs().n_audio() > _n_channels.n_audio()) {
-                               add_channel_to (c, _io->n_inputs().n_audio() - _n_channels.n_audio());
-                       } else if (_io->n_inputs().n_audio() < _n_channels.n_audio()) {
-                               remove_channel_from (c, _n_channels.n_audio() - _io->n_inputs().n_audio());
+                       if (_io->n_ports().n_audio() > _n_channels.n_audio()) {
+                               add_channel_to (c, _io->n_ports().n_audio() - _n_channels.n_audio());
+                       } else if (_io->n_ports().n_audio() < _n_channels.n_audio()) {
+                               remove_channel_from (c, _n_channels.n_audio() - _io->n_ports().n_audio());
                        }
                }
                
@@ -225,14 +227,14 @@ AudioDiskstream::get_input_sources ()
 
        uint32_t n;
        ChannelList::iterator chan;
-       uint32_t ni = _io->n_inputs().n_audio();
+       uint32_t ni = _io->n_ports().n_audio();
        vector<string> connections;
 
        for (n = 0, chan = c->begin(); chan != c->end() && n < ni; ++chan, ++n) {
                
                connections.clear ();
 
-               if (_io->input(n)->get_connections (connections) == 0) {
+               if (_io->nth (n)->get_connections (connections) == 0) {
                
                        if ((*chan)->source) {
                                // _source->disable_metering ();
@@ -386,7 +388,7 @@ AudioDiskstream::use_destructive_playlist ()
 }
 
 void
-AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record)
+AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t /*nframes*/, bool can_record)
 {
        int possibly_recording;
        int rolling;
@@ -436,7 +438,7 @@ AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t nfram
 
                        if (_alignment_style == ExistingMaterial) {
 
-                               if (!Config->get_punch_in()) {
+                               if (!_session.config.get_punch_in()) {
 
                                        /* manual punch in happens at the correct transport frame
                                           because the user hit a button. but to get alignment correct 
@@ -465,7 +467,7 @@ AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t nfram
 
                        } else {
 
-                               if (Config->get_punch_in()) {
+                               if (_session.config.get_punch_in()) {
                                        first_recordable_frame += _roll_delay;
                                } else {
                                        capture_start_frame -= _roll_delay;
@@ -511,7 +513,7 @@ AudioDiskstream::check_record_status (nframes_t transport_frame, nframes_t nfram
 }
 
 int
-AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_t offset, bool can_record, bool rec_monitors_input)
+AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input)
 {
        uint32_t n;
        boost::shared_ptr<ChannelList> c = channels.reader();
@@ -568,7 +570,7 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
                (*chan)->current_playback_buffer = 0;
        }
 
-       if (nominally_recording || (_session.get_record_enabled() && Config->get_punch_in())) {
+       if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
                OverlapType ot;
                
                // Safeguard against situations where process() goes haywire when autopunching and last_recordable_frame < first_recordable_frame
@@ -631,7 +633,7 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
 
        if (nominally_recording || rec_nframes) {
 
-               uint32_t limit = _io->n_inputs ().n_audio();
+               uint32_t limit = _io->n_ports ().n_audio();
 
                /* one or more ports could already have been removed from _io, but our
                   channel setup hasn't yet been updated. prevent us from trying to
@@ -650,14 +652,15 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
                                
                                chaninfo->current_capture_buffer = chaninfo->capture_vector.buf[0];
 
-                               /* note: grab the entire port buffer, but only copy what we were supposed to for recording, and use
-                                  rec_offset
+                               /* note: grab the entire port buffer, but only copy what we were supposed to
+                                  for recording, and use rec_offset
                                */
 
-                               AudioPort* const ap = _io->audio_input(n);
+                               AudioPort* const ap = _io->audio (n);
                                assert(ap);
-                               assert(rec_nframes <= ap->get_audio_buffer( nframes, offset ).capacity());
-                               memcpy (chaninfo->current_capture_buffer, ap->get_audio_buffer( nframes, offset ).data(rec_nframes, offset + rec_offset), sizeof (Sample) * rec_nframes);
+                               assert(rec_nframes <= ap->get_audio_buffer(nframes).capacity());
+                               memcpy (chaninfo->current_capture_buffer, ap->get_audio_buffer (rec_nframes).data(rec_offset), sizeof (Sample) * rec_nframes);
+
 
                        } else {
 
@@ -668,10 +671,10 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
                                        goto out;
                                }
 
-                               AudioPort* const ap = _io->audio_input(n);
+                               AudioPort* const ap = _io->audio (n);
                                assert(ap);
 
-                               Sample* buf = ap->get_audio_buffer( nframes, offset ).data(nframes, offset);
+                               Sample* buf = ap->get_audio_buffer(nframes).data();
                                nframes_t first = chaninfo->capture_vector.len[0];
 
                                memcpy (chaninfo->capture_wrap_buffer, buf, sizeof (Sample) * first);
@@ -769,10 +772,13 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
                                        
                                } else {
                                        
-                                       memcpy ((char *) chaninfo->playback_wrap_buffer, chaninfo->playback_vector.buf[0],
-                                               chaninfo->playback_vector.len[0] * sizeof (Sample));
-                                       memcpy (chaninfo->playback_wrap_buffer + chaninfo->playback_vector.len[0], chaninfo->playback_vector.buf[1], 
-                                               (necessary_samples - chaninfo->playback_vector.len[0]) * sizeof (Sample));
+                                       memcpy ((char *) chaninfo->playback_wrap_buffer,
+                                                       chaninfo->playback_vector.buf[0],
+                                                       chaninfo->playback_vector.len[0] * sizeof (Sample));
+                                       memcpy (chaninfo->playback_wrap_buffer + chaninfo->playback_vector.len[0],
+                                                       chaninfo->playback_vector.buf[1], 
+                                                       (necessary_samples - chaninfo->playback_vector.len[0])
+                                                                       * sizeof (Sample));
                                        
                                        chaninfo->current_playback_buffer = chaninfo->playback_wrap_buffer;
                                }
@@ -785,7 +791,7 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
                        playback_distance = nframes;
                }
 
-               phi = target_phi;
+               _speed = _target_speed;
 
        }
 
@@ -810,68 +816,23 @@ AudioDiskstream::process (nframes_t transport_frame, nframes_t nframes, nframes_
 void
 AudioDiskstream::process_varispeed_playback(nframes_t nframes, boost::shared_ptr<ChannelList> c)
 {
-       ChannelList::iterator chan;
-       
-       // the idea behind phase is that when the speed is not 1.0, we have to 
-       // interpolate between samples and then we have to store where we thought we were. 
-       // rather than being at sample N or N+1, we were at N+0.8792922
-       // so the "phase" element, if you want to think about this way, 
-       // varies from 0 to 1, representing the "offset" between samples
-       uint64_t    phase = last_phase;
+         ChannelList::iterator chan;
        
-       // acceleration
-       int64_t     phi_delta;
-       
-       // index in the input buffers
-       nframes_t   i = 0;
-
-       // Linearly interpolate into the speed buffer
-       // using 40.24 fixed point math
-       //
-       // Fixed point is just an integer with an implied scaling factor. 
-       // In 40.24 the scaling factor is 2^24 = 16777216,  
-       // so a value of 10*2^24 (in integer space) is equivalent to 10.0. 
-       //
-       // The advantage is that addition and modulus [like x = (x + y) % 2^40]  
-       // have no rounding errors and no drift, and just require a single integer add.
-       // (swh)
+               interpolation.set_speed (_target_speed);
+               
+               int channel = 0;
+               for (chan = c->begin(); chan != c->end(); ++chan, ++channel) {
+                       ChannelInfo* chaninfo (*chan);
        
-       const int64_t fractional_part_mask  = 0xFFFFFF;
-       const Sample  binary_scaling_factor = 16777216.0f;
-
-       // phi = fixed point speed
-       if (phi != target_phi) {
-               phi_delta = ((int64_t)(target_phi - phi)) / nframes;
-       } else {
-               phi_delta = 0;
-       }
-
-       for (chan = c->begin(); chan != c->end(); ++chan) {
-
-               Sample fractional_phase_part;
-               ChannelInfo* chaninfo (*chan);
-
-               i = 0;
-               phase = last_phase;
-
-               for (nframes_t outsample = 0; outsample < nframes; ++outsample) {
-                       i = phase >> 24;
-                       fractional_phase_part = (phase & fractional_part_mask) / binary_scaling_factor;
-                       chaninfo->speed_buffer[outsample] = 
-                               chaninfo->current_playback_buffer[i] * (1.0f - fractional_phase_part) +
-                               chaninfo->current_playback_buffer[i+1] * fractional_phase_part;
-                       phase += phi + phi_delta;
+                       playback_distance = interpolation.interpolate (
+                                       channel, nframes, chaninfo->current_playback_buffer, chaninfo->speed_buffer);
+                                       
+                       chaninfo->current_playback_buffer = chaninfo->speed_buffer;
                }
-               
-               chaninfo->current_playback_buffer = chaninfo->speed_buffer;
-       }
-
-       playback_distance = i; // + 1;
-       last_phase = (phase & fractional_part_mask);
 }
 
 bool
-AudioDiskstream::commit (nframes_t nframes)
+AudioDiskstream::commit (nframes_t /*nframes*/)
 {
        bool need_butler = false;
 
@@ -1069,7 +1030,7 @@ AudioDiskstream::internal_playback_seek (nframes_t distance)
 
 int
 AudioDiskstream::read (Sample* buf, Sample* mixdown_buffer, float* gain_buffer, nframes_t& start, nframes_t cnt, 
-                      ChannelInfo* channel_info, int channel, bool reversed)
+                      ChannelInfo* /*channel_info*/, int channel, bool reversed)
 {
        nframes_t this_read = 0;
        bool reloop = false;
@@ -1403,7 +1364,7 @@ AudioDiskstream::_do_refill (Sample* mixdown_buffer, float* gain_buffer)
  * written at all unless @a force_flush is true.
  */
 int
-AudioDiskstream::do_flush (Session::RunContext context, bool force_flush)
+AudioDiskstream::do_flush (RunContext /*context*/, bool force_flush)
 {
        uint32_t to_write;
        int32_t ret = 0;
@@ -1555,7 +1516,7 @@ AudioDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_ca
        */
 
        while (more_work && !err) {
-               switch (do_flush (Session::TransportContext, true)) {
+               switch (do_flush (TransportContext, true)) {
                case 0:
                        more_work = false;
                        break;
@@ -1640,9 +1601,10 @@ AudioDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_ca
                */
                
                try {
-                       boost::shared_ptr<Region> rx (RegionFactory::create (srcs, c->front()->write_source->last_capture_start_frame(), total_capture, 
-                                                                            whole_file_region_name,
-                                                                            0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile)));
+                       boost::shared_ptr<Region> rx (RegionFactory::create (srcs,
+                                               c->front()->write_source->last_capture_start_frame(), total_capture, 
+                                               whole_file_region_name, 0,
+                                               Region::Flag (Region::DefaultFlags|Region::Automatic|Region::WholeFile)));
 
                        region = boost::dynamic_pointer_cast<AudioRegion> (rx);
                        region->special_set_position (capture_info.front()->start);
@@ -1684,7 +1646,7 @@ AudioDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_ca
                        _last_capture_regions.push_back (region);
                        
                        i_am_the_modifier++;
-                       _playlist->add_region (region, (*ci)->start);
+                       _playlist->add_region (region, (*ci)->start, 1, non_layered());
                        i_am_the_modifier--;
                        
                        buffer_position += (*ci)->frames;
@@ -1762,7 +1724,7 @@ AudioDiskstream::transport_looped (nframes_t transport_frame)
 }
 
 void
-AudioDiskstream::finish_capture (bool rec_monitors_input, boost::shared_ptr<ChannelList> c)
+AudioDiskstream::finish_capture (bool /*rec_monitors_input*/, boost::shared_ptr<ChannelList> c)
 {
        was_recording = false;
        
@@ -1815,7 +1777,7 @@ AudioDiskstream::finish_capture (bool rec_monitors_input, boost::shared_ptr<Chan
 void
 AudioDiskstream::set_record_enabled (bool yn)
 {
-       if (!recordable() || !_session.record_enabling_legal() || _io->n_inputs().n_audio() == 0) {
+       if (!recordable() || !_session.record_enabling_legal() || _io->n_ports().n_audio() == 0) {
                return;
        }
 
@@ -1860,7 +1822,7 @@ AudioDiskstream::engage_record_enable ()
 
                for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
                        if ((*chan)->source) {
-                               (*chan)->source->ensure_monitor_input (!(Config->get_auto_input() && rolling));
+                               (*chan)->source->ensure_monitor_input (!(_session.config.get_auto_input() && rolling));
                        }
                        capturing_sources.push_back ((*chan)->write_source);
                        (*chan)->write_source->mark_streaming_write_started ();
@@ -1929,8 +1891,8 @@ AudioDiskstream::get_state ()
 
                Location* pi;
 
-               if (Config->get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
-                       snprintf (buf, sizeof (buf), "%" PRIu32, pi->start());
+               if (_session.config.get_punch_in() && ((pi = _session.locations()->auto_punch_location()) != 0)) {
+                       snprintf (buf, sizeof (buf), "%" PRId64, pi->start());
                } else {
                        snprintf (buf, sizeof (buf), "%" PRIu32, _session.transport_frame());
                }
@@ -2097,7 +2059,7 @@ AudioDiskstream::use_new_write_source (uint32_t n)
 }
 
 void
-AudioDiskstream::reset_write_sources (bool mark_write_complete, bool force)
+AudioDiskstream::reset_write_sources (bool mark_write_complete, bool /*force*/)
 {
        ChannelList::iterator chan;
        boost::shared_ptr<ChannelList> c = channels.reader();
@@ -2158,14 +2120,15 @@ AudioDiskstream::rename_write_sources ()
 }
 
 void
-AudioDiskstream::set_block_size (nframes_t nframes)
+AudioDiskstream::set_block_size (nframes_t /*nframes*/)
 {
        if (_session.get_block_size() > speed_buffer_size) {
                speed_buffer_size = _session.get_block_size();
                boost::shared_ptr<ChannelList> c = channels.reader();
 
                for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
-                       if ((*chan)->speed_buffer) delete [] (*chan)->speed_buffer;
+                       if ((*chan)->speed_buffer)
+                               delete [] (*chan)->speed_buffer;
                        (*chan)->speed_buffer = new Sample[speed_buffer_size];
                }
        }
@@ -2188,9 +2151,11 @@ AudioDiskstream::allocate_temporary_buffers ()
                boost::shared_ptr<ChannelList> c = channels.reader();
 
                for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
-                       if ((*chan)->playback_wrap_buffer) delete [] (*chan)->playback_wrap_buffer;
+                       if ((*chan)->playback_wrap_buffer)
+                               delete [] (*chan)->playback_wrap_buffer;
                        (*chan)->playback_wrap_buffer = new Sample[required_wrap_size]; 
-                       if ((*chan)->capture_wrap_buffer) delete [] (*chan)->capture_wrap_buffer;
+                       if ((*chan)->capture_wrap_buffer)
+                               delete [] (*chan)->capture_wrap_buffer;
                        (*chan)->capture_wrap_buffer = new Sample[required_wrap_size];  
                }
 
@@ -2241,12 +2206,14 @@ AudioDiskstream::set_align_style_from_io ()
 int
 AudioDiskstream::add_channel_to (boost::shared_ptr<ChannelList> c, uint32_t how_many)
 {
+
        while (how_many--) {
                c->push_back (new ChannelInfo(_session.audio_diskstream_buffer_size(), speed_buffer_size, wrap_buffer_size));
+               interpolation.add_channel_to (_session.audio_diskstream_buffer_size(), speed_buffer_size);
        }
 
        _n_channels.set(DataType::AUDIO, c->size());
-
+       
        return 0;
 }
 
@@ -2263,8 +2230,11 @@ int
 AudioDiskstream::remove_channel_from (boost::shared_ptr<ChannelList> c, uint32_t how_many)
 {
        while (how_many-- && !c->empty()) {
-               delete c->back();
+               // FIXME: crash (thread safe with RCU?)
+               // memory leak, when disabled.... :(
+               //delete c->back(); 
                c->pop_back();
+               interpolation.remove_channel_from ();
        }
 
        _n_channels.set(DataType::AUDIO, c->size());
@@ -2333,7 +2303,9 @@ AudioDiskstream::use_pending_capture_data (XMLNode& node)
 
                        try {
                                fs = boost::dynamic_pointer_cast<AudioFileSource> (
-                                       SourceFactory::createWritable (DataType::AUDIO, _session, prop->value(), false, _session.frame_rate()));
+                                               SourceFactory::createWritable (DataType::AUDIO, _session,
+                                                               prop->value(), true,
+                                                               false, _session.frame_rate()));
                        }
 
                        catch (failed_constructor& err) {
@@ -2367,22 +2339,25 @@ AudioDiskstream::use_pending_capture_data (XMLNode& node)
        boost::shared_ptr<AudioRegion> region;
        
        try {
-               region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, 0, first_fs->length(),
-                                                                                         region_name_from_path (first_fs->name(), true), 
-                                                                                         0, AudioRegion::Flag (AudioRegion::DefaultFlags|AudioRegion::Automatic|AudioRegion::WholeFile)));
+               region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (
+                               pending_sources, 0, first_fs->length(first_fs->timeline_position()),
+                               region_name_from_path (first_fs->name(), true), 0,
+                               Region::Flag (Region::DefaultFlags|Region::Automatic|Region::WholeFile)));
                region->special_set_position (0);
        }
 
        catch (failed_constructor& err) {
-               error << string_compose (_("%1: cannot create whole-file region from pending capture sources"),
-                                 _name)
-                     << endmsg;
+               error << string_compose (
+                               _("%1: cannot create whole-file region from pending capture sources"),
+                               _name) << endmsg;
                
                return -1;
        }
 
        try {
-               region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (pending_sources, 0, first_fs->length(), region_name_from_path (first_fs->name(), true)));
+               region = boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (
+                               pending_sources, 0, first_fs->length(first_fs->timeline_position()),
+                               region_name_from_path (first_fs->name(), true)));
        }
 
        catch (failed_constructor& err) {
@@ -2398,6 +2373,21 @@ AudioDiskstream::use_pending_capture_data (XMLNode& node)
        return 0;
 }
 
+int
+AudioDiskstream::set_non_layered (bool yn)
+{
+       if (yn != non_layered()) {
+               
+               if (yn) {
+                       _flags = Flag (_flags | NonLayered);
+               } else {
+                       _flags = Flag (_flags & ~NonLayered);
+               }
+       }
+
+       return 0;
+}
+
 int
 AudioDiskstream::set_destructive (bool yn)
 {