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988224aaf9
This situation occurs continuously when acting as Jack transport master, but everything seems to work as expected, so we'll just assume it's fine until proven otherwise. git-svn-id: svn://localhost/ardour2/branches/3.0@14043 d708f5d6-7413-0410-9779-e7cbd77b26cf
371 lines
9 KiB
C++
371 lines
9 KiB
C++
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/*
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Copyright (C) 1999-2002 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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#ifdef WAF_BUILD
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#include "libardour-config.h"
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#endif
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#include <iostream>
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#include <cmath>
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#include <unistd.h>
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#include "ardour/timestamps.h"
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#include "pbd/error.h"
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#include "pbd/enumwriter.h"
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#include "pbd/stacktrace.h"
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#include "ardour/session.h"
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#include "ardour/tempo.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 PBD;
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/* BBT TIME*/
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void
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Session::bbt_time (framepos_t when, Timecode::BBT_Time& bbt)
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{
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_tempo_map->bbt_time (when, bbt);
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}
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/* Timecode TIME */
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double
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Session::timecode_frames_per_second() const
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{
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return Timecode::timecode_to_frames_per_second (config.get_timecode_format());
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}
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bool
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Session::timecode_drop_frames() const
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{
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return Timecode::timecode_has_drop_frames(config.get_timecode_format());
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}
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void
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Session::sync_time_vars ()
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{
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_current_frame_rate = (framecnt_t) round (_base_frame_rate * (1.0 + (config.get_video_pullup()/100.0)));
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_frames_per_timecode_frame = (double) _current_frame_rate / (double) timecode_frames_per_second();
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if (timecode_drop_frames()) {
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_frames_per_hour = (int32_t)(107892 * _frames_per_timecode_frame);
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} else {
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_frames_per_hour = (int32_t)(3600 * rint(timecode_frames_per_second()) * _frames_per_timecode_frame);
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}
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_timecode_frames_per_hour = rint(timecode_frames_per_second() * 3600.0);
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last_timecode_valid = false;
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// timecode type bits are the middle two in the upper nibble
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switch ((int) ceil (timecode_frames_per_second())) {
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case 24:
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mtc_timecode_bits = 0;
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break;
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case 25:
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mtc_timecode_bits = 0x20;
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break;
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case 30:
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default:
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if (timecode_drop_frames()) {
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mtc_timecode_bits = 0x40;
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} else {
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mtc_timecode_bits = 0x60;
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}
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break;
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};
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ltc_tx_parse_offset();
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}
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void
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Session::timecode_to_sample( Timecode::Time& timecode, framepos_t& sample, bool use_offset, bool use_subframes ) const
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{
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timecode.rate = timecode_frames_per_second();
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Timecode::timecode_to_sample(
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timecode, sample, use_offset, use_subframes,
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_current_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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}
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void
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Session::sample_to_timecode (framepos_t sample, Timecode::Time& timecode, bool use_offset, bool use_subframes ) const
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{
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Timecode::sample_to_timecode (
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sample, timecode, use_offset, use_subframes,
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timecode_frames_per_second(),
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timecode_drop_frames(),
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double(_current_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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}
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void
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Session::timecode_time (framepos_t when, Timecode::Time& timecode)
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{
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if (last_timecode_valid && when == last_timecode_when) {
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timecode = last_timecode;
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return;
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}
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this->sample_to_timecode( when, timecode, true /* use_offset */, false /* use_subframes */ );
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last_timecode_when = when;
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last_timecode = timecode;
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last_timecode_valid = true;
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}
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void
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Session::timecode_time_subframes (framepos_t when, Timecode::Time& timecode)
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{
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if (last_timecode_valid && when == last_timecode_when) {
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timecode = last_timecode;
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return;
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}
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this->sample_to_timecode( when, timecode, true /* use_offset */, true /* use_subframes */ );
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last_timecode_when = when;
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last_timecode = timecode;
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last_timecode_valid = true;
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}
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void
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Session::timecode_duration (framecnt_t when, Timecode::Time& timecode) const
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{
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this->sample_to_timecode( when, timecode, false /* use_offset */, true /* use_subframes */ );
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}
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void
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Session::timecode_duration_string (char* buf, framepos_t when) const
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{
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Timecode::Time timecode;
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timecode_duration (when, timecode);
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snprintf (buf, sizeof (buf), "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
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}
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void
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Session::timecode_time (Timecode::Time &t)
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{
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timecode_time (_transport_frame, t);
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}
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int
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Session::jack_sync_callback (jack_transport_state_t state,
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jack_position_t* pos)
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{
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bool slave = synced_to_jack();
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switch (state) {
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case JackTransportStopped:
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if (slave && _transport_frame != pos->frame && post_transport_work() == 0) {
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request_locate (pos->frame, false);
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// cerr << "SYNC: stopped, locate to " << pos->frame << " from " << _transport_frame << endl;
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return false;
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} else {
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return true;
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}
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case JackTransportStarting:
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// cerr << "SYNC: starting @ " << pos->frame << " a@ " << _transport_frame << " our work = " << post_transport_work() << " pos matches ? " << (_transport_frame == pos->frame) << endl;
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if (slave) {
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return _transport_frame == pos->frame && post_transport_work() == 0;
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} else {
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return true;
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}
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break;
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case JackTransportRolling:
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// cerr << "SYNC: rolling slave = " << slave << endl;
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if (slave) {
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start_transport ();
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}
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break;
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default:
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error << string_compose (_("Unknown JACK transport state %1 in sync callback"), state)
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<< endmsg;
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}
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return true;
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}
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void
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Session::jack_timebase_callback (jack_transport_state_t /*state*/,
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pframes_t /*nframes*/,
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jack_position_t* pos,
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int /*new_position*/)
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{
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Timecode::BBT_Time bbt;
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/* BBT info */
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if (_tempo_map) {
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TempoMetric metric (_tempo_map->metric_at (_transport_frame));
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try {
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_tempo_map->bbt_time_rt (_transport_frame, bbt);
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pos->bar = bbt.bars;
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pos->beat = bbt.beats;
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pos->tick = bbt.ticks;
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// XXX still need to set bar_start_tick
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pos->beats_per_bar = metric.meter().divisions_per_bar();
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pos->beat_type = metric.meter().note_divisor();
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pos->ticks_per_beat = Timecode::BBT_Time::ticks_per_beat;
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pos->beats_per_minute = metric.tempo().beats_per_minute();
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pos->valid = jack_position_bits_t (pos->valid | JackPositionBBT);
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} catch (...) {
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/* no message */
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}
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}
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#ifdef HAVE_JACK_VIDEO_SUPPORT
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//poke audio video ratio so Ardour can track Video Sync
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pos->audio_frames_per_video_frame = frame_rate() / timecode_frames_per_second();
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pos->valid = jack_position_bits_t (pos->valid | JackAudioVideoRatio);
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#endif
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#if 0
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/* Timecode info */
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pos->timecode_offset = config.get_timecode_offset();
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t.timecode_frame_rate = timecode_frames_per_second();
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pos->valid = jack_position_bits_t (pos->valid | JackPositionTimecode;
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if (_transport_speed) {
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if (play_loop) {
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Location* location = _locations.auto_loop_location();
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if (location) {
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t.transport_state = JackTransportLooping;
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t.loop_start = location->start();
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t.loop_end = location->end();
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t.valid = jack_transport_bits_t (t.valid | JackTransportLoop);
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} else {
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t.loop_start = 0;
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t.loop_end = 0;
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t.transport_state = JackTransportRolling;
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}
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} else {
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t.loop_start = 0;
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t.loop_end = 0;
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t.transport_state = JackTransportRolling;
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}
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}
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#endif
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}
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ARDOUR::framecnt_t
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Session::convert_to_frames (AnyTime const & position)
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{
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double secs;
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switch (position.type) {
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case AnyTime::BBT:
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return _tempo_map->frame_time (position.bbt);
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break;
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case AnyTime::Timecode:
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/* XXX need to handle negative values */
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secs = position.timecode.hours * 60 * 60;
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secs += position.timecode.minutes * 60;
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secs += position.timecode.seconds;
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secs += position.timecode.frames / timecode_frames_per_second();
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if (config.get_timecode_offset_negative()) {
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return (framecnt_t) floor (secs * frame_rate()) - config.get_timecode_offset();
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} else {
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return (framecnt_t) floor (secs * frame_rate()) + config.get_timecode_offset();
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}
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break;
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case AnyTime::Seconds:
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return (framecnt_t) floor (position.seconds * frame_rate());
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break;
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case AnyTime::Frames:
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return position.frames;
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break;
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}
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return position.frames;
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}
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ARDOUR::framecnt_t
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Session::any_duration_to_frames (framepos_t position, AnyTime const & duration)
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{
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double secs;
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switch (duration.type) {
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case AnyTime::BBT:
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return (framecnt_t) ( _tempo_map->framepos_plus_bbt (position, duration.bbt) - position);
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break;
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case AnyTime::Timecode:
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/* XXX need to handle negative values */
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secs = duration.timecode.hours * 60 * 60;
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secs += duration.timecode.minutes * 60;
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secs += duration.timecode.seconds;
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secs += duration.timecode.frames / timecode_frames_per_second();
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if (config.get_timecode_offset_negative()) {
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return (framecnt_t) floor (secs * frame_rate()) - config.get_timecode_offset();
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} else {
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return (framecnt_t) floor (secs * frame_rate()) + config.get_timecode_offset();
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}
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break;
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case AnyTime::Seconds:
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return (framecnt_t) floor (duration.seconds * frame_rate());
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break;
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case AnyTime::Frames:
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return duration.frames;
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break;
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}
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return duration.frames;
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}
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