1675 lines
39 KiB
C++
1675 lines
39 KiB
C++
/*
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Copyright (C) 2000-2003 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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#include <fstream>
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#include <cstdio>
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#include <unistd.h>
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#include <cmath>
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#include <cerrno>
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#include <string>
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#include <climits>
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#include <fcntl.h>
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#include <cstdlib>
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#include <ctime>
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#include <sys/stat.h>
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#include <sys/mman.h>
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#include "pbd/error.h"
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#include "pbd/basename.h"
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#include <glibmm/thread.h>
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#include "pbd/xml++.h"
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#include "pbd/memento_command.h"
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#include "pbd/enumwriter.h"
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#include "ardour/ardour.h"
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#include "ardour/audioengine.h"
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#include "ardour/configuration.h"
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#include "ardour/cycle_timer.h"
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#include "ardour/io.h"
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#include "ardour/midi_diskstream.h"
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#include "ardour/midi_playlist.h"
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#include "ardour/midi_port.h"
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#include "ardour/midi_region.h"
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#include "ardour/playlist_factory.h"
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#include "ardour/region_factory.h"
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#include "ardour/send.h"
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#include "ardour/session.h"
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#include "ardour/smf_source.h"
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#include "ardour/utils.h"
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#include "midi++/types.h"
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#include "i18n.h"
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#include <locale.h>
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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nframes_t MidiDiskstream::midi_readahead = 4096;
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MidiDiskstream::MidiDiskstream (Session &sess, const string &name, Diskstream::Flag flag)
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: Diskstream(sess, name, flag)
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, _playback_buf(0)
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, _capture_buf(0)
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, _source_port(0)
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, _last_flush_frame(0)
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, _note_mode(Sustained)
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, _frames_written_to_ringbuffer(0)
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, _frames_read_from_ringbuffer(0)
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{
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/* prevent any write sources from being created */
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in_set_state = true;
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init(flag);
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use_new_playlist ();
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in_set_state = false;
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assert(!destructive());
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}
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MidiDiskstream::MidiDiskstream (Session& sess, const XMLNode& node)
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: Diskstream(sess, node)
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, _playback_buf(0)
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, _capture_buf(0)
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, _source_port(0)
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, _last_flush_frame(0)
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, _note_mode(Sustained)
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, _frames_written_to_ringbuffer(0)
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, _frames_read_from_ringbuffer(0)
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{
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in_set_state = true;
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init (Recordable);
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if (set_state (node)) {
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in_set_state = false;
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throw failed_constructor();
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}
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in_set_state = false;
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if (destructive()) {
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use_destructive_playlist ();
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}
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}
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void
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MidiDiskstream::init (Diskstream::Flag f)
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{
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Diskstream::init(f);
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/* there are no channels at this point, so these
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two calls just get speed_buffer_size and wrap_buffer
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size setup without duplicating their code.
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*/
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set_block_size (_session.get_block_size());
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allocate_temporary_buffers ();
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const size_t size = _session.midi_diskstream_buffer_size();
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_playback_buf = new MidiRingBuffer<nframes_t>(size);
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_capture_buf = new MidiRingBuffer<nframes_t>(size);
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_n_channels = ChanCount(DataType::MIDI, 1);
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assert(recordable());
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}
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MidiDiskstream::~MidiDiskstream ()
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{
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Glib::Mutex::Lock lm (state_lock);
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}
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void
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MidiDiskstream::non_realtime_locate (nframes_t position)
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{
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if (_write_source) {
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_write_source->set_timeline_position (position);
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}
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seek(position, false);
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}
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void
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MidiDiskstream::non_realtime_input_change ()
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{
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{
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Glib::Mutex::Lock lm (state_lock);
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if (input_change_pending == NoChange) {
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return;
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}
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if (input_change_pending & ConfigurationChanged) {
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if (_io->n_ports().n_midi() != _n_channels.n_midi()) {
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error << "Can not feed IO " << _io->n_ports()
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<< " with diskstream " << _n_channels << endl;
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}
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}
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get_input_sources ();
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set_capture_offset ();
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if (first_input_change) {
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set_align_style (_persistent_alignment_style);
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first_input_change = false;
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} else {
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set_align_style_from_io ();
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}
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input_change_pending = NoChange;
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/* implicit unlock */
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}
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/* reset capture files */
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reset_write_sources (false);
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/* now refill channel buffers */
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if (speed() != 1.0f || speed() != -1.0f) {
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seek ((nframes_t) (_session.transport_frame() * (double) speed()));
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}
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else {
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seek (_session.transport_frame());
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}
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_last_flush_frame = _session.transport_frame();
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}
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void
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MidiDiskstream::get_input_sources ()
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{
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uint32_t ni = _io->n_ports().n_midi();
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if (ni == 0) {
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return;
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}
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// This is all we do for now at least
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assert(ni == 1);
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_source_port = _io->midi(0);
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// do... stuff?
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}
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int
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MidiDiskstream::find_and_use_playlist (const string& name)
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{
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boost::shared_ptr<MidiPlaylist> playlist;
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if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (_session.playlist_by_name (name))) == 0) {
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playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (DataType::MIDI, _session, name));
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}
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if (!playlist) {
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error << string_compose(_("MidiDiskstream: Playlist \"%1\" isn't an midi playlist"), name) << endmsg;
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return -1;
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}
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return use_playlist (playlist);
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}
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int
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MidiDiskstream::use_playlist (boost::shared_ptr<Playlist> playlist)
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{
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assert(boost::dynamic_pointer_cast<MidiPlaylist>(playlist));
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Diskstream::use_playlist(playlist);
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return 0;
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}
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int
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MidiDiskstream::use_new_playlist ()
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{
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string newname;
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boost::shared_ptr<MidiPlaylist> playlist;
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if (!in_set_state && destructive()) {
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return 0;
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}
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if (_playlist) {
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newname = Playlist::bump_name (_playlist->name(), _session);
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} else {
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newname = Playlist::bump_name (_name, _session);
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}
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if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist> (PlaylistFactory::create (
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DataType::MIDI, _session, newname, hidden()))) != 0) {
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playlist->set_orig_diskstream_id (id());
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return use_playlist (playlist);
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} else {
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return -1;
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}
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}
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int
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MidiDiskstream::use_copy_playlist ()
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{
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assert(midi_playlist());
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if (destructive()) {
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return 0;
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}
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if (_playlist == 0) {
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error << string_compose(_("MidiDiskstream %1: there is no existing playlist to make a copy of!"), _name) << endmsg;
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return -1;
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}
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string newname;
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boost::shared_ptr<MidiPlaylist> playlist;
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newname = Playlist::bump_name (_playlist->name(), _session);
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if ((playlist = boost::dynamic_pointer_cast<MidiPlaylist>(PlaylistFactory::create (midi_playlist(), newname))) != 0) {
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playlist->set_orig_diskstream_id (id());
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return use_playlist (playlist);
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} else {
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return -1;
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}
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}
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/** Overloaded from parent to die horribly
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*/
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int
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MidiDiskstream::set_destructive (bool yn)
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{
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assert( ! destructive());
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assert( ! yn);
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return -1;
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}
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void
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MidiDiskstream::set_note_mode (NoteMode m)
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{
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_note_mode = m;
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midi_playlist()->set_note_mode(m);
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if (_write_source && _write_source->model())
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_write_source->model()->set_note_mode(m);
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}
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void
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MidiDiskstream::check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record)
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{
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// FIXME: waaay too much code to duplicate (AudioDiskstream)
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int possibly_recording;
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int rolling;
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int change;
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const int transport_rolling = 0x4;
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const int track_rec_enabled = 0x2;
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const int global_rec_enabled = 0x1;
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/* merge together the 3 factors that affect record status, and compute
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what has changed.
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*/
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rolling = _session.transport_speed() != 0.0f;
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possibly_recording = (rolling << 2) | (record_enabled() << 1) | can_record;
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change = possibly_recording ^ last_possibly_recording;
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if (possibly_recording == last_possibly_recording) {
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return;
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}
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/* change state */
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/* if per-track or global rec-enable turned on while the other was already on, we've started recording */
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if (((change & track_rec_enabled) && record_enabled() && (!(change & global_rec_enabled) && can_record)) ||
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((change & global_rec_enabled) && can_record && (!(change & track_rec_enabled) && record_enabled()))) {
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/* starting to record: compute first+last frames */
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first_recordable_frame = transport_frame + _capture_offset;
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last_recordable_frame = max_frames;
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capture_start_frame = transport_frame;
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if (!(last_possibly_recording & transport_rolling) && (possibly_recording & transport_rolling)) {
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/* was stopped, now rolling (and recording) */
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if (_alignment_style == ExistingMaterial) {
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first_recordable_frame += _session.worst_output_latency();
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} else {
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first_recordable_frame += _roll_delay;
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}
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} else {
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/* was rolling, but record state changed */
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if (_alignment_style == ExistingMaterial) {
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if (!_session.config.get_punch_in()) {
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/* manual punch in happens at the correct transport frame
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because the user hit a button. but to get alignment correct
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we have to back up the position of the new region to the
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appropriate spot given the roll delay.
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*/
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capture_start_frame -= _roll_delay;
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/* XXX paul notes (august 2005): i don't know why
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this is needed.
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*/
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first_recordable_frame += _capture_offset;
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} else {
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/* autopunch toggles recording at the precise
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transport frame, and then the DS waits
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to start recording for a time that depends
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on the output latency.
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*/
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first_recordable_frame += _session.worst_output_latency();
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}
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} else {
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if (_session.config.get_punch_in()) {
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first_recordable_frame += _roll_delay;
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} else {
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capture_start_frame -= _roll_delay;
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}
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}
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}
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} else if (!record_enabled() || !can_record) {
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/* stop recording */
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last_recordable_frame = transport_frame + _capture_offset;
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if (_alignment_style == ExistingMaterial) {
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last_recordable_frame += _session.worst_output_latency();
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} else {
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last_recordable_frame += _roll_delay;
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}
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}
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last_possibly_recording = possibly_recording;
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}
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#if 0
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static void
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trace_midi (ostream& o, MIDI::byte *msg, size_t len)
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{
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using namespace MIDI;
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eventType type;
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const char trace_prefix = ':';
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type = (eventType) (msg[0]&0xF0);
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switch (type) {
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case off:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " NoteOff NoteNum "
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<< (int) msg[1]
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<< " Vel "
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<< (int) msg[2]
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<< endl;
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break;
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case on:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " NoteOn NoteNum "
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<< (int) msg[1]
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<< " Vel "
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<< (int) msg[2]
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<< endl;
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break;
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case polypress:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " PolyPressure"
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<< (int) msg[1]
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<< endl;
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break;
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case MIDI::controller:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " Controller "
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<< (int) msg[1]
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<< " Value "
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<< (int) msg[2]
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<< endl;
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break;
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case program:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " Program Change ProgNum "
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<< (int) msg[1]
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<< endl;
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break;
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case chanpress:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " Channel Pressure "
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<< (int) msg[1]
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<< endl;
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break;
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case MIDI::pitchbend:
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o << trace_prefix
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<< "Channel "
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<< (msg[0]&0xF)+1
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<< " Pitch Bend "
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<< ((msg[2]<<7)|msg[1])
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<< endl;
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break;
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case MIDI::sysex:
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if (len == 1) {
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switch (msg[0]) {
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case 0xf8:
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o << trace_prefix
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<< "Clock"
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<< endl;
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break;
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case 0xfa:
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o << trace_prefix
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<< "Start"
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<< endl;
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break;
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case 0xfb:
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o << trace_prefix
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<< "Continue"
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<< endl;
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break;
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case 0xfc:
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o << trace_prefix
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<< "Stop"
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<< endl;
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break;
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case 0xfe:
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o << trace_prefix
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<< "Active Sense"
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<< endl;
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break;
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case 0xff:
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o << trace_prefix
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<< "System Reset"
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<< endl;
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break;
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default:
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o << trace_prefix
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<< "System Exclusive (1 byte : " << hex << (int) *msg << dec << ')'
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<< endl;
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break;
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}
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} else {
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o << trace_prefix
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<< "System Exclusive (" << len << ") = [ " << hex;
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for (unsigned int i = 0; i < len; ++i) {
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o << (int) msg[i] << ' ';
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}
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o << dec << ']' << endl;
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}
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break;
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case MIDI::song:
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o << trace_prefix << "Song" << endl;
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break;
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case MIDI::tune:
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o << trace_prefix << "Tune" << endl;
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break;
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case MIDI::eox:
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o << trace_prefix << "End-of-System Exclusive" << endl;
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break;
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case MIDI::timing:
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o << trace_prefix << "Timing" << endl;
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break;
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case MIDI::start:
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o << trace_prefix << "Start" << endl;
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break;
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case MIDI::stop:
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o << trace_prefix << "Stop" << endl;
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break;
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case MIDI::contineu:
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o << trace_prefix << "Continue" << endl;
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break;
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case active:
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o << trace_prefix << "Active Sense" << endl;
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break;
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default:
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o << trace_prefix << "Unrecognized MIDI message" << endl;
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break;
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}
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}
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#endif
|
|
|
|
int
|
|
MidiDiskstream::process (nframes_t transport_frame, nframes_t nframes, bool can_record, bool rec_monitors_input)
|
|
{
|
|
// FIXME: waay too much code to duplicate (AudioDiskstream::process)
|
|
int ret = -1;
|
|
nframes_t rec_offset = 0;
|
|
nframes_t rec_nframes = 0;
|
|
bool nominally_recording;
|
|
bool re = record_enabled ();
|
|
bool collect_playback = true;
|
|
|
|
/* if we've already processed the frames corresponding to this call,
|
|
just return. this allows multiple routes that are taking input
|
|
from this diskstream to call our ::process() method, but have
|
|
this stuff only happen once. more commonly, it allows both
|
|
the AudioTrack that is using this AudioDiskstream *and* the Session
|
|
to call process() without problems.
|
|
*/
|
|
|
|
if (_processed) {
|
|
return 0;
|
|
}
|
|
|
|
commit_should_unlock = false;
|
|
|
|
check_record_status (transport_frame, nframes, can_record);
|
|
|
|
nominally_recording = (can_record && re);
|
|
|
|
if (nframes == 0) {
|
|
_processed = true;
|
|
return 0;
|
|
}
|
|
|
|
/* This lock is held until the end of ::commit, so these two functions
|
|
must always be called as a pair. The only exception is if this function
|
|
returns a non-zero value, in which case, ::commit should not be called.
|
|
*/
|
|
|
|
// If we can't take the state lock return.
|
|
if (!state_lock.trylock()) {
|
|
return 1;
|
|
}
|
|
commit_should_unlock = true;
|
|
adjust_capture_position = 0;
|
|
|
|
if (nominally_recording || (_session.get_record_enabled() && _session.config.get_punch_in())) {
|
|
OverlapType ot;
|
|
|
|
ot = coverage (first_recordable_frame, last_recordable_frame, transport_frame, transport_frame + nframes);
|
|
|
|
switch (ot) {
|
|
case OverlapNone:
|
|
rec_nframes = 0;
|
|
break;
|
|
|
|
case OverlapInternal:
|
|
/* ---------- recrange
|
|
|---| transrange
|
|
*/
|
|
rec_nframes = nframes;
|
|
rec_offset = 0;
|
|
break;
|
|
|
|
case OverlapStart:
|
|
/* |--------| recrange
|
|
-----| transrange
|
|
*/
|
|
rec_nframes = transport_frame + nframes - first_recordable_frame;
|
|
if (rec_nframes) {
|
|
rec_offset = first_recordable_frame - transport_frame;
|
|
}
|
|
break;
|
|
|
|
case OverlapEnd:
|
|
/* |--------| recrange
|
|
|-------- transrange
|
|
*/
|
|
rec_nframes = last_recordable_frame - transport_frame;
|
|
rec_offset = 0;
|
|
break;
|
|
|
|
case OverlapExternal:
|
|
/* |--------| recrange
|
|
-------------- transrange
|
|
*/
|
|
rec_nframes = last_recordable_frame - last_recordable_frame;
|
|
rec_offset = first_recordable_frame - transport_frame;
|
|
break;
|
|
}
|
|
|
|
if (rec_nframes && !was_recording) {
|
|
capture_captured = 0;
|
|
was_recording = true;
|
|
}
|
|
}
|
|
|
|
|
|
if (can_record && !_last_capture_regions.empty()) {
|
|
_last_capture_regions.clear ();
|
|
}
|
|
|
|
if (nominally_recording || rec_nframes) {
|
|
|
|
// Pump entire port buffer into the ring buffer (FIXME: split cycles?)
|
|
MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
|
|
for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
|
|
const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
|
|
assert(ev.buffer());
|
|
_capture_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
|
|
}
|
|
|
|
} else {
|
|
|
|
if (was_recording) {
|
|
finish_capture (rec_monitors_input);
|
|
}
|
|
|
|
}
|
|
|
|
if (rec_nframes) {
|
|
|
|
/* data will be written to disk */
|
|
|
|
if (rec_nframes == nframes && rec_offset == 0) {
|
|
playback_distance = nframes;
|
|
}
|
|
|
|
adjust_capture_position = rec_nframes;
|
|
|
|
} else if (nominally_recording) {
|
|
|
|
/* can't do actual capture yet - waiting for latency effects to finish before we start*/
|
|
|
|
playback_distance = nframes;
|
|
collect_playback = false;
|
|
|
|
}
|
|
|
|
if (collect_playback) {
|
|
|
|
/* we're doing playback */
|
|
|
|
nframes_t necessary_samples;
|
|
|
|
/* no varispeed playback if we're recording, because the output .... TBD */
|
|
|
|
if (rec_nframes == 0 && _actual_speed != 1.0f) {
|
|
necessary_samples = (nframes_t) floor ((nframes * fabs (_actual_speed))) + 1;
|
|
} else {
|
|
necessary_samples = nframes;
|
|
}
|
|
|
|
// Pump entire port buffer into playback buffer (FIXME: split cycles?)
|
|
MidiBuffer& buf = _source_port->get_midi_buffer(nframes);
|
|
for (MidiBuffer::iterator i = buf.begin(); i != buf.end(); ++i) {
|
|
const Evoral::MIDIEvent<MidiBuffer::TimeType> ev(*i, false);
|
|
assert(ev.buffer());
|
|
_playback_buf->write(ev.time() + transport_frame, ev.type(), ev.size(), ev.buffer());
|
|
}
|
|
}
|
|
|
|
ret = 0;
|
|
|
|
_processed = true;
|
|
|
|
if (ret) {
|
|
|
|
/* we're exiting with failure, so ::commit will not
|
|
be called. unlock the state lock.
|
|
*/
|
|
|
|
commit_should_unlock = false;
|
|
state_lock.unlock();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
bool
|
|
MidiDiskstream::commit (nframes_t nframes)
|
|
{
|
|
bool need_butler = false;
|
|
|
|
if (_actual_speed < 0.0) {
|
|
playback_sample -= playback_distance;
|
|
} else {
|
|
playback_sample += playback_distance;
|
|
}
|
|
|
|
if (adjust_capture_position != 0) {
|
|
capture_captured += adjust_capture_position;
|
|
adjust_capture_position = 0;
|
|
}
|
|
|
|
uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
|
|
uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
|
|
if ((frames_written - frames_read) + nframes < midi_readahead) {
|
|
need_butler = true;
|
|
}
|
|
|
|
/*cerr << "MDS written: " << frames_written << " - read: " << frames_read <<
|
|
" = " << frames_written - frames_read
|
|
<< " + " << nframes << " < " << midi_readahead << " = " << need_butler << ")" << endl;*/
|
|
|
|
if (commit_should_unlock) {
|
|
state_lock.unlock();
|
|
}
|
|
|
|
_processed = false;
|
|
|
|
return need_butler;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::set_pending_overwrite (bool yn)
|
|
{
|
|
/* called from audio thread, so we can use the read ptr and playback sample as we wish */
|
|
|
|
pending_overwrite = yn;
|
|
|
|
overwrite_frame = playback_sample;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::overwrite_existing_buffers ()
|
|
{
|
|
//read(overwrite_frame, disk_io_chunk_frames, false);
|
|
overwrite_queued = false;
|
|
pending_overwrite = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::seek (nframes_t frame, bool complete_refill)
|
|
{
|
|
Glib::Mutex::Lock lm (state_lock);
|
|
int ret = -1;
|
|
|
|
_playback_buf->reset();
|
|
_capture_buf->reset();
|
|
g_atomic_int_set(&_frames_read_from_ringbuffer, 0);
|
|
g_atomic_int_set(&_frames_written_to_ringbuffer, 0);
|
|
|
|
playback_sample = frame;
|
|
file_frame = frame;
|
|
|
|
if (complete_refill) {
|
|
while ((ret = do_refill_with_alloc ()) > 0) ;
|
|
} else {
|
|
ret = do_refill_with_alloc ();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::can_internal_playback_seek (nframes_t distance)
|
|
{
|
|
uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
|
|
uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
|
|
return ((frames_written - frames_read) < distance);
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::internal_playback_seek (nframes_t distance)
|
|
{
|
|
cerr << "MDS: internal_playback_seek " << distance << endl;
|
|
|
|
first_recordable_frame += distance;
|
|
playback_sample += distance;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/** @a start is set to the new frame position (TIME) read up to */
|
|
int
|
|
MidiDiskstream::read (nframes_t& start, nframes_t dur, bool reversed)
|
|
{
|
|
nframes_t this_read = 0;
|
|
bool reloop = false;
|
|
nframes_t loop_end = 0;
|
|
nframes_t loop_start = 0;
|
|
nframes_t loop_length = 0;
|
|
Location *loc = 0;
|
|
|
|
if (!reversed) {
|
|
/* Make the use of a Location atomic for this read operation.
|
|
|
|
Note: Locations don't get deleted, so all we care about
|
|
when I say "atomic" is that we are always pointing to
|
|
the same one and using a start/length values obtained
|
|
just once.
|
|
*/
|
|
|
|
if ((loc = loop_location) != 0) {
|
|
loop_start = loc->start();
|
|
loop_end = loc->end();
|
|
loop_length = loop_end - loop_start;
|
|
}
|
|
|
|
/* if we are looping, ensure that the first frame we read is at the correct
|
|
position within the loop.
|
|
*/
|
|
|
|
if (loc && (start >= loop_end)) {
|
|
//cerr << "start adjusted from " << start;
|
|
start = loop_start + ((start - loop_start) % loop_length);
|
|
//cerr << "to " << start << endl;
|
|
}
|
|
//cerr << "start is " << start << " loopstart: " << loop_start << " loopend: " << loop_end << endl;
|
|
}
|
|
|
|
while (dur) {
|
|
|
|
/* take any loop into account. we can't read past the end of the loop. */
|
|
|
|
if (loc && (loop_end - start < dur)) {
|
|
this_read = loop_end - start;
|
|
//cerr << "reloop true: thisread: " << this_read << " dur: " << dur << endl;
|
|
reloop = true;
|
|
} else {
|
|
reloop = false;
|
|
this_read = dur;
|
|
}
|
|
|
|
if (this_read == 0) {
|
|
break;
|
|
}
|
|
|
|
this_read = min(dur,this_read);
|
|
|
|
if (midi_playlist()->read (*_playback_buf, start, this_read) != this_read) {
|
|
error << string_compose(
|
|
_("MidiDiskstream %1: cannot read %2 from playlist at frame %3"),
|
|
_id, this_read, start) << endmsg;
|
|
return -1;
|
|
}
|
|
|
|
//cout << "MDS this read " << this_read << " start = " << start << endl;
|
|
g_atomic_int_add(&_frames_written_to_ringbuffer, this_read);
|
|
|
|
_read_data_count = _playlist->read_data_count();
|
|
|
|
if (reversed) {
|
|
|
|
// Swap note ons with note offs here. etc?
|
|
// Fully reversing MIDI requires look-ahead (well, behind) to find previous
|
|
// CC values etc. hard.
|
|
|
|
} else {
|
|
|
|
/* if we read to the end of the loop, go back to the beginning */
|
|
|
|
if (reloop) {
|
|
// Synthesize LoopEvent here, because the next events
|
|
// written will have non-monotonic timestamps.
|
|
_playback_buf->write(loop_end - 1, LoopEventType, 0, 0);
|
|
//cout << "Pushing LoopEvent ts=" << loop_end-1
|
|
// << " start+this_read " << start+this_read << endl;
|
|
|
|
start = loop_start;
|
|
} else {
|
|
start += this_read;
|
|
}
|
|
}
|
|
|
|
dur -= this_read;
|
|
//offset += this_read;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::do_refill_with_alloc ()
|
|
{
|
|
return do_refill();
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::do_refill ()
|
|
{
|
|
int ret = 0;
|
|
size_t write_space = _playback_buf->write_space();
|
|
bool reversed = (_visible_speed * _session.transport_speed()) < 0.0f;
|
|
|
|
if (write_space == 0) {
|
|
return 0;
|
|
}
|
|
|
|
if (reversed) {
|
|
return 0;
|
|
}
|
|
|
|
/* at end: nothing to do */
|
|
if (file_frame == max_frames) {
|
|
return 0;
|
|
}
|
|
|
|
// At this point we...
|
|
assert(_playback_buf->write_space() > 0); // ... have something to write to, and
|
|
assert(file_frame <= max_frames); // ... something to write
|
|
|
|
// now calculate how much time is in the ringbuffer.
|
|
// and lets write as much as we need to get this to be midi_readahead;
|
|
uint32_t frames_read = g_atomic_int_get(&_frames_read_from_ringbuffer);
|
|
uint32_t frames_written = g_atomic_int_get(&_frames_written_to_ringbuffer);
|
|
if ((frames_written - frames_read) >= midi_readahead) {
|
|
//cout << "MDS Nothing to do. all fine" << endl;
|
|
return 0;
|
|
}
|
|
|
|
nframes_t to_read = midi_readahead - (frames_written - frames_read);
|
|
|
|
//cout << "MDS read for midi_readahead " << to_read << " rb_contains: "
|
|
// << frames_written - frames_read << endl;
|
|
|
|
to_read = min(to_read, (max_frames - file_frame));
|
|
|
|
if (read (file_frame, to_read, reversed)) {
|
|
ret = -1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/** Flush pending data to disk.
|
|
*
|
|
* Important note: this function will write *AT MOST* disk_io_chunk_frames
|
|
* of data to disk. it will never write more than that. If it writes that
|
|
* much and there is more than that waiting to be written, it will return 1,
|
|
* otherwise 0 on success or -1 on failure.
|
|
*
|
|
* If there is less than disk_io_chunk_frames to be written, no data will be
|
|
* written at all unless @a force_flush is true.
|
|
*/
|
|
int
|
|
MidiDiskstream::do_flush (RunContext context, bool force_flush)
|
|
{
|
|
uint32_t to_write;
|
|
int32_t ret = 0;
|
|
nframes_t total;
|
|
|
|
_write_data_count = 0;
|
|
|
|
total = _session.transport_frame() - _last_flush_frame;
|
|
|
|
if (_last_flush_frame > _session.transport_frame()
|
|
|| _last_flush_frame < capture_start_frame) {
|
|
_last_flush_frame = _session.transport_frame();
|
|
}
|
|
|
|
if (total == 0 || _capture_buf->read_space() == 0
|
|
|| (!force_flush && (total < disk_io_chunk_frames && was_recording))) {
|
|
goto out;
|
|
}
|
|
|
|
/* if there are 2+ chunks of disk i/o possible for
|
|
this track, let the caller know so that it can arrange
|
|
for us to be called again, ASAP.
|
|
|
|
if we are forcing a flush, then if there is* any* extra
|
|
work, let the caller know.
|
|
|
|
if we are no longer recording and there is any extra work,
|
|
let the caller know too.
|
|
*/
|
|
|
|
if (total >= 2 * disk_io_chunk_frames || ((force_flush || !was_recording) && total > disk_io_chunk_frames)) {
|
|
ret = 1;
|
|
}
|
|
|
|
to_write = disk_io_chunk_frames;
|
|
|
|
assert(!destructive());
|
|
|
|
if (record_enabled()
|
|
&& ( (_session.transport_frame() - _last_flush_frame > disk_io_chunk_frames)
|
|
|| force_flush)) {
|
|
if ((!_write_source) || _write_source->midi_write (*_capture_buf, capture_start_frame, to_write) != to_write) {
|
|
error << string_compose(_("MidiDiskstream %1: cannot write to disk"), _id) << endmsg;
|
|
return -1;
|
|
} else {
|
|
_last_flush_frame = _session.transport_frame();
|
|
}
|
|
}
|
|
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::transport_stopped (struct tm& when, time_t twhen, bool abort_capture)
|
|
{
|
|
uint32_t buffer_position;
|
|
bool more_work = true;
|
|
int err = 0;
|
|
boost::shared_ptr<MidiRegion> region;
|
|
nframes_t total_capture;
|
|
MidiRegion::SourceList srcs;
|
|
MidiRegion::SourceList::iterator src;
|
|
vector<CaptureInfo*>::iterator ci;
|
|
bool mark_write_completed = false;
|
|
|
|
finish_capture (true);
|
|
|
|
/* butler is already stopped, but there may be work to do
|
|
to flush remaining data to disk.
|
|
*/
|
|
|
|
while (more_work && !err) {
|
|
switch (do_flush (TransportContext, true)) {
|
|
case 0:
|
|
more_work = false;
|
|
break;
|
|
case 1:
|
|
break;
|
|
case -1:
|
|
error << string_compose(_("MidiDiskstream \"%1\": cannot flush captured data to disk!"), _name) << endmsg;
|
|
err++;
|
|
}
|
|
}
|
|
|
|
/* XXX is there anything we can do if err != 0 ? */
|
|
Glib::Mutex::Lock lm (capture_info_lock);
|
|
|
|
if (capture_info.empty()) {
|
|
return;
|
|
}
|
|
|
|
if (abort_capture) {
|
|
|
|
if (_write_source) {
|
|
|
|
_write_source->mark_for_remove ();
|
|
_write_source->drop_references ();
|
|
_write_source.reset();
|
|
}
|
|
|
|
/* new source set up in "out" below */
|
|
|
|
} else {
|
|
|
|
assert(_write_source);
|
|
|
|
for (total_capture = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
|
|
total_capture += (*ci)->frames;
|
|
}
|
|
|
|
/* figure out the name for this take */
|
|
|
|
srcs.push_back (_write_source);
|
|
_write_source->set_timeline_position (capture_info.front()->start);
|
|
_write_source->set_captured_for (_name);
|
|
|
|
string whole_file_region_name;
|
|
whole_file_region_name = region_name_from_path (_write_source->name(), true);
|
|
|
|
/* Register a new region with the Session that
|
|
describes the entire source. Do this first
|
|
so that any sub-regions will obviously be
|
|
children of this one (later!)
|
|
*/
|
|
|
|
try {
|
|
boost::shared_ptr<Region> rx (RegionFactory::create (srcs, 0,
|
|
total_capture, whole_file_region_name, 0,
|
|
Region::Flag (Region::DefaultFlags|Region::Automatic|Region::WholeFile)));
|
|
|
|
region = boost::dynamic_pointer_cast<MidiRegion> (rx);
|
|
region->special_set_position (capture_info.front()->start);
|
|
}
|
|
|
|
|
|
catch (failed_constructor& err) {
|
|
error << string_compose(_("%1: could not create region for complete midi file"), _name) << endmsg;
|
|
/* XXX what now? */
|
|
}
|
|
|
|
_last_capture_regions.push_back (region);
|
|
|
|
// cerr << _name << ": there are " << capture_info.size() << " capture_info records\n";
|
|
|
|
XMLNode &before = _playlist->get_state();
|
|
_playlist->freeze ();
|
|
|
|
for (buffer_position = 0, ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
|
|
|
|
string region_name;
|
|
|
|
_session.region_name (region_name, _write_source->name(), false);
|
|
|
|
// cerr << _name << ": based on ci of " << (*ci)->start << " for " << (*ci)->frames << " add a region\n";
|
|
|
|
try {
|
|
boost::shared_ptr<Region> rx (RegionFactory::create (srcs, buffer_position, (*ci)->frames, region_name));
|
|
region = boost::dynamic_pointer_cast<MidiRegion> (rx);
|
|
}
|
|
|
|
catch (failed_constructor& err) {
|
|
error << _("MidiDiskstream: could not create region for captured midi!") << endmsg;
|
|
continue; /* XXX is this OK? */
|
|
}
|
|
|
|
region->GoingAway.connect (bind (mem_fun (*this, &Diskstream::remove_region_from_last_capture), boost::weak_ptr<Region>(region)));
|
|
|
|
_last_capture_regions.push_back (region);
|
|
|
|
// cerr << "add new region, buffer position = " << buffer_position << " @ " << (*ci)->start << endl;
|
|
|
|
i_am_the_modifier++;
|
|
_playlist->add_region (region, (*ci)->start);
|
|
i_am_the_modifier--;
|
|
|
|
buffer_position += (*ci)->frames;
|
|
}
|
|
|
|
_playlist->thaw ();
|
|
XMLNode &after = _playlist->get_state();
|
|
_session.add_command (new MementoCommand<Playlist>(*_playlist, &before, &after));
|
|
|
|
}
|
|
|
|
mark_write_completed = true;
|
|
|
|
reset_write_sources (mark_write_completed);
|
|
|
|
for (ci = capture_info.begin(); ci != capture_info.end(); ++ci) {
|
|
delete *ci;
|
|
}
|
|
|
|
capture_info.clear ();
|
|
capture_start_frame = 0;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::transport_looped (nframes_t transport_frame)
|
|
{
|
|
if (was_recording) {
|
|
|
|
// adjust the capture length knowing that the data will be recorded to disk
|
|
// only necessary after the first loop where we're recording
|
|
if (capture_info.size() == 0) {
|
|
capture_captured += _capture_offset;
|
|
|
|
if (_alignment_style == ExistingMaterial) {
|
|
capture_captured += _session.worst_output_latency();
|
|
} else {
|
|
capture_captured += _roll_delay;
|
|
}
|
|
}
|
|
|
|
finish_capture (true);
|
|
|
|
// the next region will start recording via the normal mechanism
|
|
// we'll set the start position to the current transport pos
|
|
// no latency adjustment or capture offset needs to be made, as that already happened the first time
|
|
capture_start_frame = transport_frame;
|
|
first_recordable_frame = transport_frame; // mild lie
|
|
last_recordable_frame = max_frames;
|
|
was_recording = true;
|
|
}
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::finish_capture (bool rec_monitors_input)
|
|
{
|
|
was_recording = false;
|
|
|
|
if (capture_captured == 0) {
|
|
return;
|
|
}
|
|
|
|
// Why must we destroy?
|
|
assert(!destructive());
|
|
|
|
CaptureInfo* ci = new CaptureInfo;
|
|
|
|
ci->start = capture_start_frame;
|
|
ci->frames = capture_captured;
|
|
|
|
/* XXX theoretical race condition here. Need atomic exchange ?
|
|
However, the circumstances when this is called right
|
|
now (either on record-disable or transport_stopped)
|
|
mean that no actual race exists. I think ...
|
|
We now have a capture_info_lock, but it is only to be used
|
|
to synchronize in the transport_stop and the capture info
|
|
accessors, so that invalidation will not occur (both non-realtime).
|
|
*/
|
|
|
|
// cerr << "Finish capture, add new CI, " << ci->start << '+' << ci->frames << endl;
|
|
|
|
capture_info.push_back (ci);
|
|
capture_captured = 0;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::set_record_enabled (bool yn)
|
|
{
|
|
if (!recordable() || !_session.record_enabling_legal()) {
|
|
return;
|
|
}
|
|
|
|
assert(!destructive());
|
|
|
|
if (yn && _source_port == 0) {
|
|
|
|
/* pick up connections not initiated *from* the IO object
|
|
we're associated with.
|
|
*/
|
|
|
|
get_input_sources ();
|
|
}
|
|
|
|
/* yes, i know that this not proof against race conditions, but its
|
|
good enough. i think.
|
|
*/
|
|
|
|
if (record_enabled() != yn) {
|
|
if (yn) {
|
|
engage_record_enable ();
|
|
} else {
|
|
disengage_record_enable ();
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::engage_record_enable ()
|
|
{
|
|
bool rolling = _session.transport_speed() != 0.0f;
|
|
|
|
g_atomic_int_set (&_record_enabled, 1);
|
|
|
|
if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
|
|
_source_port->request_monitor_input (!(_session.config.get_auto_input() && rolling));
|
|
}
|
|
|
|
// FIXME: Why is this necessary? Isn't needed for AudioDiskstream...
|
|
if (!_write_source)
|
|
use_new_write_source();
|
|
|
|
_write_source->mark_streaming_midi_write_started (_note_mode, _session.transport_frame());
|
|
|
|
RecordEnableChanged (); /* EMIT SIGNAL */
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::disengage_record_enable ()
|
|
{
|
|
g_atomic_int_set (&_record_enabled, 0);
|
|
if (_source_port && Config->get_monitoring_model() == HardwareMonitoring) {
|
|
if (_source_port) {
|
|
_source_port->request_monitor_input (false);
|
|
}
|
|
}
|
|
|
|
RecordEnableChanged (); /* EMIT SIGNAL */
|
|
}
|
|
|
|
XMLNode&
|
|
MidiDiskstream::get_state ()
|
|
{
|
|
XMLNode* node = new XMLNode ("MidiDiskstream");
|
|
char buf[64];
|
|
LocaleGuard lg (X_("POSIX"));
|
|
|
|
snprintf (buf, sizeof(buf), "0x%x", _flags);
|
|
node->add_property ("flags", buf);
|
|
|
|
node->add_property("channel-mode", enum_2_string(get_channel_mode()));
|
|
|
|
snprintf (buf, sizeof(buf), "0x%x", get_channel_mask());
|
|
node->add_property("channel-mask", buf);
|
|
|
|
node->add_property ("playlist", _playlist->name());
|
|
|
|
snprintf (buf, sizeof(buf), "%f", _visible_speed);
|
|
node->add_property ("speed", buf);
|
|
|
|
node->add_property("name", _name);
|
|
id().print(buf, sizeof(buf));
|
|
node->add_property("id", buf);
|
|
|
|
if (_write_source && _session.get_record_enabled()) {
|
|
|
|
XMLNode* cs_child = new XMLNode (X_("CapturingSources"));
|
|
XMLNode* cs_grandchild;
|
|
|
|
cs_grandchild = new XMLNode (X_("file"));
|
|
cs_grandchild->add_property (X_("path"), _write_source->path());
|
|
cs_child->add_child_nocopy (*cs_grandchild);
|
|
|
|
/* store the location where capture will start */
|
|
|
|
Location* pi;
|
|
|
|
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());
|
|
}
|
|
|
|
cs_child->add_property (X_("at"), buf);
|
|
node->add_child_nocopy (*cs_child);
|
|
}
|
|
|
|
if (_extra_xml) {
|
|
node->add_child_copy (*_extra_xml);
|
|
}
|
|
|
|
return* node;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::set_state (const XMLNode& node)
|
|
{
|
|
const XMLProperty* prop;
|
|
XMLNodeList nlist = node.children();
|
|
XMLNodeIterator niter;
|
|
uint32_t nchans = 1;
|
|
XMLNode* capture_pending_node = 0;
|
|
LocaleGuard lg (X_("POSIX"));
|
|
|
|
in_set_state = true;
|
|
|
|
for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
|
|
/*if ((*niter)->name() == IO::state_node_name) {
|
|
deprecated_io_node = new XMLNode (**niter);
|
|
}*/
|
|
assert ((*niter)->name() != IO::state_node_name);
|
|
|
|
if ((*niter)->name() == X_("CapturingSources")) {
|
|
capture_pending_node = *niter;
|
|
}
|
|
}
|
|
|
|
/* prevent write sources from being created */
|
|
|
|
in_set_state = true;
|
|
|
|
if ((prop = node.property ("name")) != 0) {
|
|
_name = prop->value();
|
|
}
|
|
|
|
if ((prop = node.property ("id")) != 0) {
|
|
_id = prop->value ();
|
|
}
|
|
|
|
if ((prop = node.property ("flags")) != 0) {
|
|
_flags = Flag (string_2_enum (prop->value(), _flags));
|
|
}
|
|
|
|
ChannelMode channel_mode = AllChannels;
|
|
if ((prop = node.property ("channel-mode")) != 0) {
|
|
channel_mode = ChannelMode (string_2_enum(prop->value(), channel_mode));
|
|
}
|
|
|
|
unsigned int channel_mask = 0xFFFF;
|
|
if ((prop = node.property ("channel-mask")) != 0) {
|
|
sscanf (prop->value().c_str(), "0x%x", &channel_mask);
|
|
if (channel_mask & (~0xFFFF)) {
|
|
warning << _("MidiDiskstream: XML property channel-mask out of range") << endmsg;
|
|
}
|
|
}
|
|
|
|
set_channel_mode(channel_mode, channel_mask);
|
|
|
|
if ((prop = node.property ("channels")) != 0) {
|
|
nchans = atoi (prop->value().c_str());
|
|
}
|
|
|
|
if ((prop = node.property ("playlist")) == 0) {
|
|
return -1;
|
|
}
|
|
|
|
{
|
|
bool had_playlist = (_playlist != 0);
|
|
|
|
if (find_and_use_playlist (prop->value())) {
|
|
return -1;
|
|
}
|
|
|
|
if (!had_playlist) {
|
|
_playlist->set_orig_diskstream_id (_id);
|
|
}
|
|
|
|
if (capture_pending_node) {
|
|
use_pending_capture_data (*capture_pending_node);
|
|
}
|
|
|
|
}
|
|
|
|
if ((prop = node.property ("speed")) != 0) {
|
|
double sp = atof (prop->value().c_str());
|
|
|
|
if (realtime_set_speed (sp, false)) {
|
|
non_realtime_set_speed ();
|
|
}
|
|
}
|
|
|
|
in_set_state = false;
|
|
|
|
/* make sure this is clear before we do anything else */
|
|
|
|
// FIXME?
|
|
//_capturing_source = 0;
|
|
|
|
/* write sources are handled when we handle the input set
|
|
up of the IO that owns this DS (::non_realtime_input_change())
|
|
*/
|
|
|
|
in_set_state = false;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::use_new_write_source (uint32_t n)
|
|
{
|
|
if (!recordable()) {
|
|
return 1;
|
|
}
|
|
|
|
assert(n == 0);
|
|
|
|
if (_write_source) {
|
|
|
|
if (_write_source->is_empty ()) {
|
|
_write_source->mark_for_remove ();
|
|
_write_source.reset();
|
|
} else {
|
|
_write_source.reset();
|
|
}
|
|
}
|
|
|
|
try {
|
|
_write_source = boost::dynamic_pointer_cast<SMFSource>(_session.create_midi_source_for_session (*this));
|
|
if (!_write_source) {
|
|
throw failed_constructor();
|
|
}
|
|
}
|
|
|
|
catch (failed_constructor &err) {
|
|
error << string_compose (_("%1:%2 new capture file not initialized correctly"), _name, n) << endmsg;
|
|
_write_source.reset();
|
|
return -1;
|
|
}
|
|
|
|
_write_source->set_allow_remove_if_empty (true);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::reset_write_sources (bool mark_write_complete, bool force)
|
|
{
|
|
if (!recordable()) {
|
|
return;
|
|
}
|
|
|
|
if (_write_source && mark_write_complete) {
|
|
_write_source->mark_streaming_write_completed ();
|
|
}
|
|
|
|
use_new_write_source (0);
|
|
|
|
if (record_enabled()) {
|
|
//_capturing_sources.push_back (_write_source);
|
|
}
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::rename_write_sources ()
|
|
{
|
|
if (_write_source != 0) {
|
|
_write_source->set_source_name (_name, destructive());
|
|
/* XXX what to do if this fails ? */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::set_block_size (nframes_t nframes)
|
|
{
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::allocate_temporary_buffers ()
|
|
{
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::monitor_input (bool yn)
|
|
{
|
|
if (_source_port)
|
|
_source_port->ensure_monitor_input (yn);
|
|
}
|
|
|
|
void
|
|
MidiDiskstream::set_align_style_from_io ()
|
|
{
|
|
bool have_physical = false;
|
|
|
|
if (_io == 0) {
|
|
return;
|
|
}
|
|
|
|
get_input_sources ();
|
|
|
|
if (_source_port && _source_port->flags() & JackPortIsPhysical) {
|
|
have_physical = true;
|
|
}
|
|
|
|
if (have_physical) {
|
|
set_align_style (ExistingMaterial);
|
|
} else {
|
|
set_align_style (CaptureTime);
|
|
}
|
|
}
|
|
|
|
|
|
float
|
|
MidiDiskstream::playback_buffer_load () const
|
|
{
|
|
return (float) ((double) _playback_buf->read_space()/
|
|
(double) _playback_buf->capacity());
|
|
}
|
|
|
|
float
|
|
MidiDiskstream::capture_buffer_load () const
|
|
{
|
|
return (float) ((double) _capture_buf->write_space()/
|
|
(double) _capture_buf->capacity());
|
|
}
|
|
|
|
int
|
|
MidiDiskstream::use_pending_capture_data (XMLNode& node)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
/** Writes playback events in the given range to \a dst, translating time stamps
|
|
* so that an event at \a start has time = 0
|
|
*/
|
|
void
|
|
MidiDiskstream::get_playback (MidiBuffer& dst, nframes_t start, nframes_t end)
|
|
{
|
|
dst.clear();
|
|
assert(dst.size() == 0);
|
|
|
|
// Reverse. ... We just don't do reverse, ok? Back off.
|
|
if (end <= start) {
|
|
return;
|
|
}
|
|
|
|
// Check only events added this offset cycle
|
|
MidiBuffer::iterator this_cycle_start = dst.end();
|
|
|
|
// Translates stamps to be relative to start
|
|
#if 1
|
|
_playback_buf->read(dst, start, end);
|
|
#else
|
|
const size_t events_read = _playback_buf->read(dst, start, end);
|
|
cout << "MDS events read = " << events_read
|
|
<< " start = " << start << " end = " << end
|
|
<< " readspace " << _playback_buf->read_space()
|
|
<< " writespace " << _playback_buf->write_space() << endl;
|
|
#endif
|
|
|
|
gint32 frames_read = end - start;
|
|
g_atomic_int_add(&_frames_read_from_ringbuffer, frames_read);
|
|
|
|
// Feed the data through the MidiStateTracker
|
|
// If it detects a LoopEvent it will add necessary note offs
|
|
if (_midi_state_tracker.track(this_cycle_start, dst.end())) {
|
|
_midi_state_tracker.resolve_notes(dst, end-start - 1);
|
|
}
|
|
}
|
|
|