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add LTC generator
git-svn-id: svn://localhost/ardour2/branches/3.0@13315 d708f5d6-7413-0410-9779-e7cbd77b26cf
This commit is contained in:
Robin Gareus
parent
4c13d205d4
commit
ec94210a4d
11 changed files with 484 additions and 1 deletions
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@ -1101,6 +1101,17 @@ RCOptionEditor::RCOptionEditor ()
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add_option (_("Transport"), _ltc_port);
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#ifdef HAVE_LTC
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// TODO; rather disable this button than not compile it..
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add_option (_("Transport"),
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new BoolOption (
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"send-ltc",
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_("Generate Linear/Longitudinal Time Code"),
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sigc::mem_fun (*_rc_config, &RCConfiguration::get_send_ltc),
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sigc::mem_fun (*_rc_config, &RCConfiguration::set_send_ltc)
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));
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#endif
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parameter_changed ("sync-source");
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/* EDITOR */
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@ -261,6 +261,7 @@ _ the regular process() call to session->process() is not made.
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int create_process_thread (boost::function<void()>, pthread_t*, size_t stacksize);
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boost::shared_ptr<Port> ltc_input_port() const { return _ltc_input; }
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boost::shared_ptr<Port> ltc_output_port() const { return _ltc_output; }
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private:
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static AudioEngine* _instance;
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@ -292,6 +293,7 @@ private:
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ProcessThread* _main_thread;
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boost::shared_ptr<Port> _ltc_input;
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boost::shared_ptr<Port> _ltc_output;
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void reconnect_ltc ();
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SerializedRCUManager<Ports> ports;
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@ -52,6 +52,8 @@ CONFIG_VARIABLE (bool, timecode_sync_frame_rate, "timecode-sync-frame-rate", tru
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CONFIG_VARIABLE (bool, timecode_source_is_synced, "timecode-source-is-synced", true)
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CONFIG_VARIABLE (SyncSource, sync_source, "sync-source", JACK)
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CONFIG_VARIABLE (std::string, ltc_source_port, "ltc-source-port", "system:capture_1")
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CONFIG_VARIABLE (bool, send_ltc, "send-ltc", false)
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CONFIG_VARIABLE (std::string, ltc_output_port, "ltc-sink-port", "")
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/* control surfaces */
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@ -64,6 +64,10 @@
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#include <jack/session.h>
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#endif
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#ifdef HAVE_LTC
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#include <ltc.h>
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#endif
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class XMLTree;
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class XMLNode;
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struct _AEffect;
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@ -1178,6 +1182,23 @@ class Session : public PBD::StatefulDestructible, public PBD::ScopedConnectionLi
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int send_midi_time_code_for_cycle (framepos_t, framepos_t, pframes_t nframes);
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#ifdef HAVE_LTC
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LTCEncoder* ltc_encoder;
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ltcsnd_sample_t* ltc_enc_buf;
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Timecode::TimecodeFormat ltc_enc_tcformat;
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framepos_t ltc_enc_pos;
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int32_t ltc_buf_off;
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int32_t ltc_buf_len;
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int32_t ltc_enc_byte;
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double ltc_speed;
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void ltc_tx_initialize();
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void ltc_tx_cleanup();
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void ltc_tx_reset();
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int ltc_tx_send_time_code_for_cycle (framepos_t, framepos_t, double, double, pframes_t nframes);
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#endif
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void reset_record_status ();
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int no_roll (pframes_t nframes);
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@ -79,6 +79,7 @@ AudioEngine::AudioEngine (string client_name, string session_uuid)
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, m_meter_thread (0)
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, _main_thread (0)
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, _ltc_input ()
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, _ltc_output ()
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, ports (new Ports)
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{
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_instance = this; /* singleton */
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@ -94,6 +95,12 @@ AudioEngine::AudioEngine (string client_name, string session_uuid)
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#ifdef HAVE_LTC
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_ltc_input = register_port (DataType::AUDIO, _("LTC in"), true);
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/* register_port() would allocate buffers and pass a shadow copy
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* which is subject to ardour's route buffering behavioud and
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* not suitable for generating LTC independent of transport state.
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*/
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_ltc_output.reset(new AudioPort ("LTC out", Port::IsOutput));
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/* As of October 2012, the LTC source port is the only thing that needs
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* to care about Config parameters, so don't bother to listen if we're
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* not doing LTC stuff. This might change if other parameters show up
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@ -107,6 +114,11 @@ AudioEngine::AudioEngine (string client_name, string session_uuid)
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AudioEngine::~AudioEngine ()
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{
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config_connection.disconnect ();
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#ifdef HAVE_LTC
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if (_ltc_output && _ltc_output->jack_port()) {
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jack_port_disconnect (_jack, _ltc_output->jack_port());
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}
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#endif
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{
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Glib::Threads::Mutex::Lock tm (_process_lock);
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@ -537,6 +549,15 @@ AudioEngine::process_callback (pframes_t nframes)
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}
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if (_session == 0) {
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#ifdef HAVE_LTC
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// silence LTC
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jack_default_audio_sample_t *out;
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boost::shared_ptr<Port> ltcport = ltc_output_port();
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if (ltcport && ltcport->jack_port()) {
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out = (jack_default_audio_sample_t*) jack_port_get_buffer (ltcport->jack_port(), nframes);
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if (out) memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
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}
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#endif
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if (!_freewheeling) {
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MIDI::Manager::instance()->cycle_start(nframes);
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@ -1644,6 +1665,9 @@ AudioEngine::parameter_changed (const std::string& s)
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if (s == "ltc-source-port") {
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reconnect_ltc ();
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}
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else if (s == "ltc-sink-port") {
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// TODO
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}
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}
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@ -153,6 +153,9 @@ Session::Session (AudioEngine &eng,
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, _suspend_timecode_transmission (0)
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{
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_locations = new Locations (*this);
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#ifdef HAVE_LTC
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ltc_encoder = NULL;
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#endif
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if (how_many_dsp_threads () > 1) {
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/* For now, only create the graph if we are using >1 DSP threads, as
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@ -238,6 +241,10 @@ Session::destroy ()
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Port::PortDrop (); /* EMIT SIGNAL */
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#ifdef HAVE_LTC
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ltc_tx_cleanup();
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#endif
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/* clear history so that no references to objects are held any more */
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_history.clear ();
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393
libs/ardour/session_ltc.cc
Normal file
393
libs/ardour/session_ltc.cc
Normal file
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@ -0,0 +1,393 @@
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/*
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Copyright (C) 2012 Paul Davis
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Written by Robin Gareus <robin@gareus.org>
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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 "ardour/debug.h"
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#include "timecode/time.h"
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#include "ardour/session.h"
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#include "ardour/audioengine.h"
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#include "ardour/audio_port.h"
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#include "i18n.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace MIDI;
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using namespace PBD;
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using namespace Timecode;
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//#define LTC_GEN_FRAMEDBUG
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void
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Session::ltc_tx_initialize()
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{
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ltc_enc_tcformat = config.get_timecode_format();
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX init sr: %1 fps: %2\n", nominal_frame_rate(), timecode_to_frames_per_second(ltc_enc_tcformat)));
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ltc_encoder = ltc_encoder_create(nominal_frame_rate(),
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timecode_to_frames_per_second(ltc_enc_tcformat),
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0);
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ltc_encoder_set_bufsize(ltc_encoder, nominal_frame_rate(), 23.0);
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/* buffersize for 1 LTC frame: (1 + sample-rate / fps) bytes
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* usually returned by ltc_encoder_get_buffersize(encoder)
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*
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* since the fps can change and A3's min fps: 24000/1001 */
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ltc_enc_buf = (ltcsnd_sample_t*) calloc((nominal_frame_rate() / 23), sizeof(ltcsnd_sample_t));
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ltc_speed = 0;
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ltc_tx_reset();
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}
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void
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Session::ltc_tx_cleanup()
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{
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DEBUG_TRACE (DEBUG::LTC, "LTC TX cleanup\n");
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if (ltc_enc_buf) free(ltc_enc_buf);
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ltc_encoder_free(ltc_encoder);
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ltc_encoder = NULL;
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}
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void
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Session::ltc_tx_reset()
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{
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DEBUG_TRACE (DEBUG::LTC, "LTC TX reset\n");
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ltc_enc_pos = -1; // force re-start
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ltc_buf_len = 0;
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ltc_buf_off = 0;
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ltc_enc_byte = 0;
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}
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int
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Session::ltc_tx_send_time_code_for_cycle (framepos_t start_frame, framepos_t end_frame,
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double target_speed, double current_speed,
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pframes_t nframes)
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{
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assert(nframes > 0);
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const float smult = 2.0/(3.0*255.0);
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SMPTETimecode tc;
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jack_default_audio_sample_t *out;
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pframes_t txf = 0;
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boost::shared_ptr<Port> ltcport = engine().ltc_output_port();
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if (!ltc_encoder || !ltc_enc_buf || !ltcport || ! ltcport->jack_port()) return 0;
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out = (jack_default_audio_sample_t*) jack_port_get_buffer (ltcport->jack_port(), nframes);
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if (!out) return 0;
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if (engine().freewheeling() || !Config->get_send_ltc()) {
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memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
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return nframes;
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}
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX %1 to %2 / %3\n", start_frame, end_frame, nframes));
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/* all systems go. Now here's the plan:
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*
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* 1) check if fps has changed
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* 2) check direction of encoding, calc speed
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* 3) calculate frame and byte to send aligned to jack-period size
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* 4) check if it's the frame/byte that is already in the queue
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* 5) if (4) mismatch, re-calculate offset of LTC frame relative to period size
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* 6) actual LTC audio output
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* 6a) send remaining part of already queued frame; break on nframes
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* 6b) encode new LTC-frame byte
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* 6c) goto 6a
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* 7) done
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*/
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// (1)
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TimecodeFormat cur_timecode = config.get_timecode_format();
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if (cur_timecode != ltc_enc_tcformat) {
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX1: TC format mismatch - reinit sr: %1 fps: %2\n", nominal_frame_rate(), timecode_to_frames_per_second(cur_timecode)));
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if (ltc_encoder_reinit(ltc_encoder, nominal_frame_rate(), timecode_to_frames_per_second(cur_timecode), 0)) {
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PBD::error << _("LTC encoder: invalid framerate - LTC encoding is disabled for the remainder of this session.") << endmsg;
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ltc_tx_cleanup();
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return 0;
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}
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ltc_enc_tcformat = cur_timecode;
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ltc_tx_reset();
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}
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/* LTC is max. 30 fps */
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if (timecode_to_frames_per_second(cur_timecode) > 30) {
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memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
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return nframes;
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}
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// (2)
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#define SIGNUM(a) ( (a) < 0 ? -1 : 1)
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framepos_t cycle_start_frame = (current_speed < 0) ? end_frame :start_frame;
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double new_ltc_speed = double(labs(end_frame - start_frame) * SIGNUM(current_speed)) / double(nframes);
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if (SIGNUM(new_ltc_speed) != SIGNUM (ltc_speed)) {
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// transport changed direction
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DEBUG_TRACE (DEBUG::LTC, "LTC TX2: transport direction changed\n");
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ltc_tx_reset();
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}
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if (ltc_speed != current_speed || target_speed != fabs(current_speed)) {
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/* TODO check ./libs/ardour/interpolation.cc CubicInterpolation::interpolate
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* if target_speed != current_speed we should interpolate, too.
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*
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* However, currenly in A3 target_speed == current_speed for each process cycle
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* (except for the sign). Besides, above speed calulation uses the
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* difference (end_frame - start_frame).
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* end_frame is calculated from 'frames_moved' which includes the interpolation.
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* so we're good, except for the fact that each LTC byte is sent at fixed speed.
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*/
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX2: speed change old: %1 cur: %2 tgt: %3 ctd: %4\n", ltc_speed, current_speed, target_speed, fabs(current_speed) - target_speed));
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}
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if (end_frame == start_frame || fabs(current_speed) < 0.1 ) {
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DEBUG_TRACE (DEBUG::LTC, "LTC TX2: transport is not rolling or absolute-speed < 0.1\n");
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/* keep repeating current frame
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*
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* an LTC generator must be able to continue generating LTC when Ardours transport is in stop
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* some machines do odd things if LTC goes away:
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* e.g. a tape based machine (video or audio), some think they have gone into park if LTC goes away,
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* so unspool the tape from the playhead. That might be inconvenient.
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* If LTC keeps arriving they remain in a stop position with the tape on the playhead.
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*/
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new_ltc_speed = 0;
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}
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ltc_speed = new_ltc_speed;
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX2: transport speed %1.\n", ltc_speed));
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if (fabs(ltc_speed) > 10.0) {
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DEBUG_TRACE (DEBUG::LTC, "LTC TX2: speed is out of bounds.\n");
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ltc_tx_reset();
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memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
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return nframes;
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}
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// (3)
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Timecode::Time tc_start;
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framepos_t tc_sample_start;
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/* calc timecode frame from current position - round down to nearest timecode */
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int boff;
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if (ltc_speed == 0) {
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boff = 0;
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} else if (ltc_speed < 0) {
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boff = (ltc_enc_byte - 9) * frames_per_timecode_frame() / 10;
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} else {
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boff = ltc_enc_byte * frames_per_timecode_frame() / 10;
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}
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sample_to_timecode(cycle_start_frame
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- boff
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- ltc_speed * (ltc_buf_len - ltc_buf_off),
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tc_start, true, false);
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/* convert timecode back to sample-position */
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Timecode::timecode_to_sample (tc_start, tc_sample_start, true, false,
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double(frame_rate()),
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config.get_subframes_per_frame(),
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config.get_timecode_offset_negative(), config.get_timecode_offset()
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);
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/* difference between current frame and TC frame in samples */
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frameoffset_t soff = cycle_start_frame - tc_sample_start;
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX3: now: %1 tra: %2 eoff %3\n", cycle_start_frame, tc_sample_start, soff));
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// (4)
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX4: enc: %1 boff: %2 || enc-byte:%3\n", ltc_enc_pos, boff, ltc_enc_byte));
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if (ltc_enc_pos != tc_sample_start) {
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/* re-calc timecode w/o buffer offset */
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sample_to_timecode(cycle_start_frame, tc_start, true, false);
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Timecode::timecode_to_sample (tc_start, tc_sample_start, true, false,
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double(frame_rate()),
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config.get_subframes_per_frame(),
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config.get_timecode_offset_negative(), config.get_timecode_offset()
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);
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soff = cycle_start_frame - tc_sample_start;
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DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX4: now: %1 trs: %2 toff %3\n", cycle_start_frame, tc_sample_start, soff));
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tc.hours = tc_start.hours;
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tc.mins = tc_start.minutes;
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tc.secs = tc_start.seconds;
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tc.frame = tc_start.frames;
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ltc_encoder_set_timecode(ltc_encoder, &tc);
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#if 1
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/* workaround for libltc recognizing 29.97 and 30000/1001 as drop-frame TC.
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* in A3 only 30000/1001 is drop-frame and there are also other questionable
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* DF timecodes such as 24k/1001 and 25k/1001.
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*/
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LTCFrame ltcframe;
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ltc_encoder_get_frame(ltc_encoder, <cframe);
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ltcframe.dfbit = timecode_has_drop_frames(cur_timecode)?1:0;
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ltc_encoder_set_frame(ltc_encoder, <cframe);
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#endif
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// (5)
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int fdiff = 0;
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if (soff < 0) {
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fdiff = ceil(-soff / frames_per_timecode_frame());
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soff += fdiff * frames_per_timecode_frame();
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for (int i=0; i < fdiff; ++i) {
|
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ltc_encoder_inc_timecode(ltc_encoder);
|
||||
}
|
||||
}
|
||||
else if (soff >= frames_per_timecode_frame()) {
|
||||
fdiff = floor(soff / frames_per_timecode_frame());
|
||||
soff -= fdiff * frames_per_timecode_frame();
|
||||
for (int i=0; i < fdiff; ++i) {
|
||||
ltc_encoder_dec_timecode(ltc_encoder);
|
||||
}
|
||||
}
|
||||
|
||||
assert(soff >= 0 && soff < frames_per_timecode_frame());
|
||||
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX5 restart encoder fdiff %1 sdiff %2\n", fdiff, soff));
|
||||
ltc_tx_reset();
|
||||
|
||||
if (ltc_speed == 0) {
|
||||
// offset is irrelevant when not rolling
|
||||
soff = 0;
|
||||
}
|
||||
if (soff > 0 && soff <= nframes) {
|
||||
txf=soff;
|
||||
memset(out, 0, soff * sizeof(jack_default_audio_sample_t));
|
||||
} else if (soff > 0) {
|
||||
/* resync next cycle */
|
||||
memset(out, 0, soff * sizeof(jack_default_audio_sample_t));
|
||||
return nframes;
|
||||
}
|
||||
|
||||
ltc_enc_byte = soff * 10 / frames_per_timecode_frame();
|
||||
|
||||
if (ltc_speed < 0 ) {
|
||||
ltc_enc_byte = 9 - ltc_enc_byte;
|
||||
}
|
||||
|
||||
ltc_enc_pos = tc_sample_start;
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX5 restart @ %1 byte %2\n", ltc_enc_pos, ltc_enc_byte));
|
||||
}
|
||||
|
||||
// (6)
|
||||
while (1) {
|
||||
#ifdef LTC_GEN_FRAMEDBUG
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX6.1 @%1 [ %2 / %3 ]\n", txf, ltc_buf_off, ltc_buf_len));
|
||||
#endif
|
||||
// (6a)
|
||||
while ((ltc_buf_off < ltc_buf_len) && (txf < nframes)) {
|
||||
const float v1 = ltc_enc_buf[ltc_buf_off++] - 128.0;
|
||||
const jack_default_audio_sample_t val = (jack_default_audio_sample_t) (v1*smult);
|
||||
out[txf++] = val;
|
||||
}
|
||||
#ifdef LTC_GEN_FRAMEDBUG
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX6.2 @%1 [ %2 / %3 ]\n", txf, ltc_buf_off, ltc_buf_len));
|
||||
#endif
|
||||
|
||||
if (txf >= nframes) {
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX7 txf = %1 nframes = %2\n", txf, nframes));
|
||||
return nframes;
|
||||
}
|
||||
|
||||
ltc_buf_len = 0;
|
||||
ltc_buf_off = 0;
|
||||
|
||||
// (6b)
|
||||
|
||||
if (SIGNUM(ltc_speed) == -1) {
|
||||
ltc_enc_byte = (ltc_enc_byte + 9)%10;
|
||||
if (ltc_enc_byte == 9) {
|
||||
ltc_encoder_dec_timecode(ltc_encoder);
|
||||
#if 0 // this does not work for fractional or drop-frame TC
|
||||
ltc_enc_pos -= frames_per_timecode_frame();
|
||||
#else // TODO make this a function
|
||||
SMPTETimecode enctc;
|
||||
Timecode::Time a3tc;
|
||||
ltc_encoder_get_timecode(ltc_encoder, &enctc);
|
||||
|
||||
a3tc.hours = enctc.hours ;
|
||||
a3tc.minutes = enctc.mins ;
|
||||
a3tc.seconds = enctc.secs ;
|
||||
a3tc.frames = enctc.frame ;
|
||||
a3tc.rate = timecode_to_frames_per_second(cur_timecode);
|
||||
a3tc.drop = timecode_has_drop_frames(cur_timecode);
|
||||
|
||||
Timecode::timecode_to_sample (a3tc, ltc_enc_pos, true, false,
|
||||
double(frame_rate()),
|
||||
config.get_subframes_per_frame(),
|
||||
config.get_timecode_offset_negative(), config.get_timecode_offset()
|
||||
);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
if (ltc_encoder_encode_byte(ltc_encoder, ltc_enc_byte, (ltc_speed==0)?1.0:(1.0/ltc_speed))) {
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX6.3 encoder error byte %1\n", ltc_enc_byte));
|
||||
ltc_encoder_buffer_flush(ltc_encoder);
|
||||
ltc_tx_reset();
|
||||
memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
|
||||
return -1;
|
||||
}
|
||||
int enc_frames = ltc_encoder_get_buffer(ltc_encoder, &(ltc_enc_buf[ltc_buf_len]));
|
||||
#ifdef LTC_GEN_FRAMEDBUG
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX6.3 encoded %1 bytes LTC-byte %2 at spd %3\n", enc_frames, ltc_enc_byte, ltc_speed));
|
||||
#endif
|
||||
if (enc_frames <=0) {
|
||||
DEBUG_TRACE (DEBUG::LTC, "LTC TX6.3 encoder empty buffer.\n");
|
||||
ltc_encoder_buffer_flush(ltc_encoder);
|
||||
ltc_tx_reset();
|
||||
memset(out, 0, nframes * sizeof(jack_default_audio_sample_t));
|
||||
return -1;
|
||||
}
|
||||
|
||||
ltc_buf_len += enc_frames;
|
||||
|
||||
if (SIGNUM(ltc_speed) == 1) {
|
||||
ltc_enc_byte = (ltc_enc_byte + 1)%10;
|
||||
if (ltc_enc_byte == 0 && ltc_speed != 0) {
|
||||
ltc_encoder_inc_timecode(ltc_encoder);
|
||||
#if 0 // this does not work for fractional or drop-frame TC
|
||||
ltc_enc_pos += frames_per_timecode_frame();
|
||||
#else // TODO make this a function
|
||||
SMPTETimecode enctc;
|
||||
Timecode::Time a3tc;
|
||||
ltc_encoder_get_timecode(ltc_encoder, &enctc);
|
||||
|
||||
a3tc.hours = enctc.hours ;
|
||||
a3tc.minutes = enctc.mins ;
|
||||
a3tc.seconds = enctc.secs ;
|
||||
a3tc.frames = enctc.frame ;
|
||||
a3tc.rate = timecode_to_frames_per_second(cur_timecode);
|
||||
a3tc.drop = timecode_has_drop_frames(cur_timecode);
|
||||
|
||||
Timecode::timecode_to_sample (a3tc, ltc_enc_pos, true, false,
|
||||
double(frame_rate()),
|
||||
config.get_subframes_per_frame(),
|
||||
config.get_timecode_offset_negative(), config.get_timecode_offset()
|
||||
);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
#ifdef LTC_GEN_FRAMEDBUG
|
||||
DEBUG_TRACE (DEBUG::LTC, string_compose("LTC TX6.4 fno: %1 [ %2 / %3 ] spd %4\n", ltc_enc_pos, ltc_buf_off, ltc_buf_len, ltc_speed));
|
||||
#endif
|
||||
}
|
||||
|
||||
return nframes;
|
||||
}
|
||||
|
|
@ -412,6 +412,7 @@ Session::send_full_time_code (framepos_t const t)
|
|||
int
|
||||
Session::send_midi_time_code_for_cycle (framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
|
||||
{
|
||||
// XXX only if _slave == MTC_slave; we could generate MTC from jack or LTC
|
||||
if (_engine.freewheeling() || _slave || !_send_qf_mtc || transmitting_timecode_time.negative || (next_quarter_frame_to_send < 0)) {
|
||||
// cerr << "(MTC) Not sending MTC\n";
|
||||
return 0;
|
||||
|
|
|
|||
|
|
@ -348,6 +348,10 @@ Session::process_with_events (pframes_t nframes)
|
|||
|
||||
end_frame = _transport_frame + frames_moved;
|
||||
|
||||
#ifdef HAVE_LTC
|
||||
ltc_tx_send_time_code_for_cycle (_transport_frame, end_frame, _target_transport_speed, _transport_speed, nframes);
|
||||
#endif
|
||||
|
||||
{
|
||||
SessionEvent* this_event;
|
||||
Events::iterator the_next_one;
|
||||
|
|
@ -789,12 +793,20 @@ Session::process_without_events (pframes_t nframes)
|
|||
|
||||
if (!_exporting && _slave) {
|
||||
if (!follow_slave (nframes)) {
|
||||
#ifdef HAVE_LTC
|
||||
ltc_tx_send_time_code_for_cycle (_transport_frame, _transport_frame, 0, 0 , nframes);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
if (_transport_speed == 0) {
|
||||
fail_roll (nframes);
|
||||
#ifdef HAVE_LTC
|
||||
if (!_exporting) {
|
||||
ltc_tx_send_time_code_for_cycle (_transport_frame, _transport_frame, 0, 0 , nframes);
|
||||
}
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
|
|
@ -810,6 +822,12 @@ Session::process_without_events (pframes_t nframes)
|
|||
send_midi_time_code_for_cycle (_transport_frame, _transport_frame + frames_moved, nframes);
|
||||
}
|
||||
|
||||
#ifdef HAVE_LTC
|
||||
if (!_exporting) {
|
||||
ltc_tx_send_time_code_for_cycle (_transport_frame, _transport_frame + frames_moved, _target_transport_speed, _transport_speed, nframes);
|
||||
}
|
||||
#endif
|
||||
|
||||
framepos_t const stop_limit = compute_stop_limit ();
|
||||
|
||||
if (maybe_stop (stop_limit)) {
|
||||
|
|
|
|||
|
|
@ -366,6 +366,9 @@ Session::second_stage_init ()
|
|||
|
||||
MIDI::Name::MidiPatchManager::instance().set_session (this);
|
||||
|
||||
#ifdef HAVE_LTC
|
||||
ltc_tx_initialize();
|
||||
#endif
|
||||
/* initial program change will be delivered later; see ::config_changed() */
|
||||
|
||||
_state_of_the_state = Clean;
|
||||
|
|
|
|||
|
|
@ -282,7 +282,7 @@ def configure(conf):
|
|||
autowaf.check_pkg(conf, 'libcurl', uselib_store='CURL',
|
||||
atleast_version='7.0.0')
|
||||
autowaf.check_pkg(conf, 'ltc', uselib_store='LTC',
|
||||
atleast_version='0.3.2', mandatory=False)
|
||||
atleast_version='0.7.0', mandatory=False)
|
||||
|
||||
# we don't try to detect this, since its part of our source tree
|
||||
|
||||
|
|
@ -385,6 +385,7 @@ def build(bld):
|
|||
|
||||
if bld.is_defined('HAVE_LTC') :
|
||||
obj.source += ['ltc_slave.cc']
|
||||
obj.source += ['session_ltc.cc']
|
||||
obj.uselib += ['LTC']
|
||||
|
||||
if bld.is_defined('HAVE_LILV') :
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue