X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fsession_time.cc;h=8f080285e2c26a09e893644bc2e5bbe8ce47c501;hb=cf52d6e4b40111eb04b244ec054055a4ec15dbe0;hp=07b702618e0169d9002aa3621b9cbeee3387053b;hpb=912da52a539981193941d8739fa6f103b5e406db;p=ardour.git diff --git a/libs/ardour/session_time.cc b/libs/ardour/session_time.cc index 07b702618e..8f080285e2 100644 --- a/libs/ardour/session_time.cc +++ b/libs/ardour/session_time.cc @@ -1,6 +1,6 @@ /* - Copyright (C) 1999-2002 Paul Davis + Copyright (C) 1999-2002 Paul Davis This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -16,355 +16,194 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id$ */ +#ifdef WAF_BUILD +#include "libardour-config.h" +#endif + #include #include #include -#include +#include "ardour/timestamps.h" -#include +#include "pbd/error.h" +#include "pbd/enumwriter.h" +#include "pbd/stacktrace.h" -#include -#include -#include -#include -#include -#include +#include "ardour/session.h" +#include "ardour/tempo.h" -#include "i18n.h" +#include "pbd/i18n.h" +using namespace std; using namespace ARDOUR; using namespace PBD; /* BBT TIME*/ void -Session::bbt_time (jack_nframes_t when, BBT_Time& bbt) +Session::bbt_time (framepos_t when, Timecode::BBT_Time& bbt) { - _tempo_map->bbt_time (when, bbt); + bbt = _tempo_map->bbt_at_frame (when); } -/* SMPTE TIME */ +/* Timecode TIME */ -int -Session::set_smpte_type (float fps, bool drop_frames) +double +Session::timecode_frames_per_second() const { - smpte_frames_per_second = fps; - smpte_drop_frames = drop_frames; - _frames_per_smpte_frame = (double) _current_frame_rate / (double) smpte_frames_per_second; - _frames_per_hour = _current_frame_rate * 3600; - _smpte_frames_per_hour = (unsigned long) (smpte_frames_per_second * 3600.0); + return Timecode::timecode_to_frames_per_second (config.get_timecode_format()); +} +bool +Session::timecode_drop_frames() const +{ + return Timecode::timecode_has_drop_frames(config.get_timecode_format()); +} - last_smpte_valid = false; - // smpte type bits are the middle two in the upper nibble - switch ((int) ceil (fps)) { +void +Session::sync_time_vars () +{ + _current_frame_rate = (framecnt_t) round (_nominal_frame_rate * (1.0 + (config.get_video_pullup()/100.0))); + _frames_per_timecode_frame = (double) _current_frame_rate / (double) timecode_frames_per_second(); + if (timecode_drop_frames()) { + _frames_per_hour = (int32_t)(107892 * _frames_per_timecode_frame); + } else { + _frames_per_hour = (int32_t)(3600 * rint(timecode_frames_per_second()) * _frames_per_timecode_frame); + } + _timecode_frames_per_hour = rint(timecode_frames_per_second() * 3600.0); + + last_timecode_valid = false; + // timecode type bits are the middle two in the upper nibble + switch ((int) ceil (timecode_frames_per_second())) { case 24: - mtc_smpte_bits = 0; + mtc_timecode_bits = 0; break; case 25: - mtc_smpte_bits = 0x20; + mtc_timecode_bits = 0x20; break; case 30: default: - if (drop_frames) { - mtc_smpte_bits = 0x40; + if (timecode_drop_frames()) { + mtc_timecode_bits = 0x40; } else { - mtc_smpte_bits = 0x60; + mtc_timecode_bits = 0x60; } break; }; - - SMPTETypeChanged (); /* EMIT SIGNAL */ - - set_dirty(); - - return 0; -} - -void -Session::set_smpte_offset (jack_nframes_t off) -{ - _smpte_offset = off; - last_smpte_valid = false; - - AudioFileSource::set_header_position_offset (_smpte_offset, _smpte_offset_negative); - - SMPTEOffsetChanged (); /* EMIT SIGNAL */ + ltc_tx_parse_offset(); } void -Session::set_smpte_offset_negative (bool neg) +Session::timecode_to_sample( Timecode::Time& timecode, framepos_t& sample, bool use_offset, bool use_subframes ) const { - _smpte_offset_negative = neg; - last_smpte_valid = false; - - AudioFileSource::set_header_position_offset (_smpte_offset, _smpte_offset_negative); - - SMPTEOffsetChanged (); /* EMIT SIGNAL */ -} + timecode.rate = timecode_frames_per_second(); + Timecode::timecode_to_sample( + timecode, sample, use_offset, use_subframes, + _current_frame_rate, + config.get_subframes_per_frame(), + config.get_timecode_offset_negative(), config.get_timecode_offset() + ); -void -Session::smpte_to_sample( SMPTE::Time& smpte, jack_nframes_t& sample, bool use_offset, bool use_subframes ) const -{ - if (smpte_drop_frames) { - // The drop frame format was created to better approximate the 30000/1001 = 29.97002997002997.... - // framerate of NTSC color TV. The used frame rate of drop frame is 29.97, which drifts by about - // 0.108 frame per hour, or about 1.3 frames per 12 hours. This is not perfect, but a lot better - // than using 30 non drop, which will drift with about 1.8 frame per minute. - // Using 29.97, drop frame real time can be accurate only every 10th minute (10 minutes of 29.97 fps - // is exactly 17982 frames). One minute is 1798.2 frames, but we count 30 frames per second - // (30 * 60 = 1800). This means that at the first minute boundary (at the end of 0:0:59:29) we - // are 1.8 frames too late relative to real time. By dropping 2 frames (jumping to 0:1:0:2) we are - // approx. 0.2 frames too early. This adds up with 0.2 too early for each minute until we are 1.8 - // frames too early at 0:9:0:2 (9 * 0.2 = 1.8). The 10th minute brings us 1.8 frames later again - // (at end of 0:9:59:29), which sums up to 0 (we are back to zero at 0:10:0:0 :-). - // - // In table form: - // - // SMPTE value frames offset subframes offset seconds (rounded) 44100 sample (rounded) - // 0:00:00:00 0.0 0 0.000 0 (accurate) - // 0:00:59:29 1.8 144 60.027 2647177 - // 0:01:00:02 -0.2 -16 60.060 2648648 - // 0:01:59:29 1.6 128 120.020 5292883 - // 0:02:00:02 -0.4 -32 120.053 5294354 - // 0:02:59:29 1.4 112 180.013 7938588 - // 0:03:00:02 -0.6 -48 180.047 7940060 - // 0:03:59:29 1.2 96 240.007 10584294 - // 0:04:00:02 -0.8 -64 240.040 10585766 - // 0:04:59:29 1.0 80 300.000 13230000 - // 0:05:00:02 -1.0 -80 300.033 13231471 - // 0:05:59:29 0.8 64 359.993 15875706 - // 0:06:00:02 -1.2 -96 360.027 15877177 - // 0:06:59:29 0.6 48 419.987 18521411 - // 0:07:00:02 -1.4 -112 420.020 18522883 - // 0:07:59:29 0.4 32 478.980 21167117 - // 0:08:00:02 -1.6 -128 480.013 21168589 - // 0:08:59:29 0.2 16 539.973 23812823 - // 0:09:00:02 -1.8 -144 540.007 23814294 - // 0:09:59:29 0.0+ 0+ 599.967 26458529 - // 0:10:00:00 0.0 0 600.000 26460000 (accurate) - // - // Per Sigmond - - // Samples inside time dividable by 10 minutes (real time accurate) - jack_nframes_t base_samples = ((smpte.hours * 60 * 60) + ((smpte.minutes / 10) * 10 * 60)) * frame_rate(); - // Samples inside time exceeding the nearest 10 minutes (always offset, see above) - long exceeding_df_minutes = smpte.minutes % 10; - long exceeding_df_seconds = (exceeding_df_minutes * 60) + smpte.seconds; - long exceeding_df_frames = (30 * exceeding_df_seconds) + smpte.frames - (2 * exceeding_df_minutes); - jack_nframes_t exceeding_samples = (jack_nframes_t) rint(exceeding_df_frames * _frames_per_smpte_frame); - sample = base_samples + exceeding_samples; - } else { - // Non drop is easy: - sample = (((smpte.hours * 60 * 60) + (smpte.minutes * 60) + smpte.seconds) * frame_rate()) + (jack_nframes_t)rint(smpte.frames * _frames_per_smpte_frame); - } - - if (use_subframes) { - sample += (long) (((double)smpte.subframes * _frames_per_smpte_frame) / 80.0); - } - - if (use_offset) { - if (smpte_offset_negative()) { - if (sample >= smpte_offset()) { - sample -= smpte_offset(); - } else { - /* Prevent song-time from becoming negative */ - sample = 0; - } - } else { - if (smpte.negative) { - if (sample <= smpte_offset()) { - sample = smpte_offset() - sample; - } else { - sample = 0; - } - } else { - sample += smpte_offset(); - } - } - } } - void -Session::sample_to_smpte( jack_nframes_t sample, SMPTE::Time& smpte, bool use_offset, bool use_subframes ) const +Session::sample_to_timecode (framepos_t sample, Timecode::Time& timecode, bool use_offset, bool use_subframes ) const { - jack_nframes_t offset_sample; + Timecode::sample_to_timecode ( + sample, timecode, use_offset, use_subframes, - if (!use_offset) { - offset_sample = sample; - smpte.negative = false; - } else { - if (_smpte_offset_negative) { - offset_sample = sample + _smpte_offset; - smpte.negative = false; - } else { - if (sample < _smpte_offset) { - offset_sample = (_smpte_offset - sample); - smpte.negative = true; - } else { - offset_sample = sample - _smpte_offset; - smpte.negative = false; - } - } - } - - double smpte_frames_left_exact; - double smpte_frames_fraction; - unsigned long smpte_frames_left; - - // Extract whole hours. Do this to prevent rounding errors with - // high sample numbers in the calculations that follow. - smpte.hours = offset_sample / _frames_per_hour; - offset_sample = offset_sample % _frames_per_hour; - - // Calculate exact number of (exceeding) smpte frames and fractional frames - smpte_frames_left_exact = (double) offset_sample / _frames_per_smpte_frame; - smpte_frames_fraction = smpte_frames_left_exact - floor( smpte_frames_left_exact ); - smpte.subframes = (long) rint(smpte_frames_fraction * 80.0); - - // XXX Not sure if this is necessary anymore... - if (smpte.subframes == 80) { - // This can happen with 24 fps (and 29.97 fps ?) - smpte_frames_left_exact = ceil( smpte_frames_left_exact ); - smpte.subframes = 0; - } - - // Extract hour-exceeding frames for minute, second and frame calculations - smpte_frames_left = ((long) floor( smpte_frames_left_exact )); - - if (smpte_drop_frames) { - // See long explanation in smpte_to_sample()... - - // Number of 10 minute chunks - smpte.minutes = (smpte_frames_left / 17982) * 10; // exactly 17982 frames in 10 minutes - // frames exceeding the nearest 10 minute barrier - long exceeding_df_frames = smpte_frames_left % 17982; - - // Find minutes exceeding the nearest 10 minute barrier - if (exceeding_df_frames >= 1800) { // nothing to do if we are inside the first minute (0-1799) - exceeding_df_frames -= 1800; // take away first minute (different number of frames than the others) - long extra_minutes_minus_1 = exceeding_df_frames / 1798; // how many minutes after the first one - exceeding_df_frames -= extra_minutes_minus_1 * 1798; // take away the (extra) minutes just found - smpte.minutes += extra_minutes_minus_1 + 1; // update with exceeding minutes - } - - // Adjust frame numbering for dropped frames (frame 0 and 1 skipped at start of every minute except every 10th) - if (smpte.minutes % 10) { - // Every minute except every 10th - if (exceeding_df_frames < 28) { - // First second, frames 0 and 1 are skipped - smpte.seconds = 0; - smpte.frames = exceeding_df_frames + 2; - } else { - // All other seconds, all 30 frames are counted - exceeding_df_frames -= 28; - smpte.seconds = (exceeding_df_frames / 30) + 1; - smpte.frames = exceeding_df_frames % 30; - } - } else { - // Every 10th minute, all 30 frames counted in all seconds - smpte.seconds = exceeding_df_frames / 30; - smpte.frames = exceeding_df_frames % 30; - } - } else { - // Non drop is easy - smpte.minutes = smpte_frames_left / ((long) smpte_frames_per_second * 60); - smpte_frames_left = smpte_frames_left % ((long) smpte_frames_per_second * 60); - smpte.seconds = smpte_frames_left / (long) smpte_frames_per_second; - smpte.frames = smpte_frames_left % (long) smpte_frames_per_second; - } + timecode_frames_per_second(), + timecode_drop_frames(), + double(_current_frame_rate), - if (!use_subframes) { - smpte.subframes = 0; - } + config.get_subframes_per_frame(), + config.get_timecode_offset_negative(), config.get_timecode_offset() + ); } void -Session::smpte_time (jack_nframes_t when, SMPTE::Time& smpte) +Session::timecode_time (framepos_t when, Timecode::Time& timecode) { - if (last_smpte_valid && when == last_smpte_when) { - smpte = last_smpte; + if (last_timecode_valid && when == last_timecode_when) { + timecode = last_timecode; return; } - sample_to_smpte( when, smpte, true /* use_offset */, false /* use_subframes */ ); + this->sample_to_timecode( when, timecode, true /* use_offset */, false /* use_subframes */ ); - last_smpte_when = when; - last_smpte = smpte; - last_smpte_valid = true; + last_timecode_when = when; + last_timecode = timecode; + last_timecode_valid = true; } void -Session::smpte_time_subframes (jack_nframes_t when, SMPTE::Time& smpte) +Session::timecode_time_subframes (framepos_t when, Timecode::Time& timecode) { - if (last_smpte_valid && when == last_smpte_when) { - smpte = last_smpte; + if (last_timecode_valid && when == last_timecode_when) { + timecode = last_timecode; return; } - - sample_to_smpte( when, smpte, true /* use_offset */, true /* use_subframes */ ); - last_smpte_when = when; - last_smpte = smpte; - last_smpte_valid = true; + this->sample_to_timecode( when, timecode, true /* use_offset */, true /* use_subframes */ ); + + last_timecode_when = when; + last_timecode = timecode; + last_timecode_valid = true; } void -Session::smpte_duration (jack_nframes_t when, SMPTE::Time& smpte) const +Session::timecode_duration (framecnt_t when, Timecode::Time& timecode) const { - sample_to_smpte( when, smpte, false /* use_offset */, true /* use_subframes */ ); + this->sample_to_timecode( when, timecode, false /* use_offset */, true /* use_subframes */ ); } void -Session::smpte_duration_string (char* buf, jack_nframes_t when) const +Session::timecode_duration_string (char* buf, size_t len, framepos_t when) const { - SMPTE::Time smpte; + Timecode::Time timecode; - smpte_duration (when, smpte); - snprintf (buf, sizeof (buf), "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, smpte.hours, smpte.minutes, smpte.seconds, smpte.frames); + timecode_duration (when, timecode); + snprintf (buf, len, "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames); } void -Session::smpte_time (SMPTE::Time &t) +Session::timecode_time (Timecode::Time &t) { - smpte_time (_transport_frame, t); + timecode_time (_transport_frame, t); } int -Session::jack_sync_callback (jack_transport_state_t state, - jack_position_t* pos) +Session::backend_sync_callback (TransportState state, framepos_t pos) { - bool slave = synced_to_jack(); + bool slave = synced_to_engine(); switch (state) { - case JackTransportStopped: - if (slave && _transport_frame != pos->frame && post_transport_work == 0) { - request_locate (pos->frame, false); + case TransportStopped: + if (slave && _transport_frame != pos && post_transport_work() == 0) { + request_locate (pos, false); // cerr << "SYNC: stopped, locate to " << pos->frame << " from " << _transport_frame << endl; return false; } else { return true; } - - case JackTransportStarting: - // cerr << "SYNC: starting @ " << pos->frame << " a@ " << _transport_frame << " our work = " << post_transport_work << " pos matches ? " << (_transport_frame == pos->frame) << endl; + + case TransportStarting: + // cerr << "SYNC: starting @ " << pos->frame << " a@ " << _transport_frame << " our work = " << post_transport_work() << " pos matches ? " << (_transport_frame == pos->frame) << endl; if (slave) { - return _transport_frame == pos->frame && post_transport_work == 0; + return _transport_frame == pos && post_transport_work() == 0; } else { return true; } break; - case JackTransportRolling: + case TransportRolling: // cerr << "SYNC: rolling slave = " << slave << endl; if (slave) { start_transport (); @@ -372,121 +211,80 @@ Session::jack_sync_callback (jack_transport_state_t state, break; default: - error << string_compose (_("Unknown JACK transport state %1 in sync callback"), state) + error << string_compose (_("Unknown transport state %1 in sync callback"), state) << endmsg; - } + } return true; } -void -Session::jack_timebase_callback (jack_transport_state_t state, - jack_nframes_t nframes, - jack_position_t* pos, - int new_position) -{ - BBT_Time bbt; - - /* frame info */ - - pos->frame = _transport_frame; - pos->valid = JackPositionTimecode; - - /* BBT info */ - - if (_tempo_map) { - - TempoMap::Metric metric (_tempo_map->metric_at (_transport_frame)); - _tempo_map->bbt_time_with_metric (_transport_frame, bbt, metric); - - pos->bar = bbt.bars; - pos->beat = bbt.beats; - pos->tick = bbt.ticks; - - // XXX still need to set bar_start_tick - - pos->beats_per_bar = metric.meter().beats_per_bar(); - pos->beat_type = metric.meter().note_divisor(); - pos->ticks_per_beat = Meter::ticks_per_beat; - pos->beats_per_minute = metric.tempo().beats_per_minute(); - - pos->valid = jack_position_bits_t (pos->valid | JackPositionBBT); - } - -#if 0 - /* SMPTE info */ - - t.smpte_offset = _smpte_offset; - t.smpte_frame_rate = smpte_frames_per_second; - - if (_transport_speed) { - - if (auto_loop) { - Location* location = _locations.auto_loop_location(); - - if (location) { - - t.transport_state = JackTransportLooping; - t.loop_start = location->start(); - t.loop_end = location->end(); - t.valid = jack_transport_bits_t (t.valid | JackTransportLoop); - - } else { - - t.loop_start = 0; - t.loop_end = 0; - t.transport_state = JackTransportRolling; +ARDOUR::framecnt_t +Session::convert_to_frames (AnyTime const & position) +{ + double secs; - } + switch (position.type) { + case AnyTime::BBT: + return _tempo_map->frame_at_bbt (position.bbt); + break; + case AnyTime::Timecode: + /* XXX need to handle negative values */ + secs = position.timecode.hours * 60 * 60; + secs += position.timecode.minutes * 60; + secs += position.timecode.seconds; + secs += position.timecode.frames / timecode_frames_per_second(); + if (config.get_timecode_offset_negative()) { + return (framecnt_t) floor (secs * frame_rate()) - config.get_timecode_offset(); } else { - - t.loop_start = 0; - t.loop_end = 0; - t.transport_state = JackTransportRolling; - + return (framecnt_t) floor (secs * frame_rate()) + config.get_timecode_offset(); } + break; - } + case AnyTime::Seconds: + return (framecnt_t) floor (position.seconds * frame_rate()); + break; + + case AnyTime::Frames: + return position.frames; + break; + } -#endif + return position.frames; } -jack_nframes_t -Session::convert_to_frames_at (jack_nframes_t position, AnyTime& any) +ARDOUR::framecnt_t +Session::any_duration_to_frames (framepos_t position, AnyTime const & duration) { double secs; - - switch (any.type) { + + switch (duration.type) { case AnyTime::BBT: - return _tempo_map->frame_time ( any.bbt); + return (framecnt_t) ( _tempo_map->framepos_plus_bbt (position, duration.bbt) - position); break; - case AnyTime::SMPTE: + case AnyTime::Timecode: /* XXX need to handle negative values */ - secs = any.smpte.hours * 60 * 60; - secs += any.smpte.minutes * 60; - secs += any.smpte.seconds; - secs += any.smpte.frames / smpte_frames_per_second; - if (_smpte_offset_negative) - { - return (jack_nframes_t) floor (secs * frame_rate()) - _smpte_offset; - } - else - { - return (jack_nframes_t) floor (secs * frame_rate()) + _smpte_offset; + secs = duration.timecode.hours * 60 * 60; + secs += duration.timecode.minutes * 60; + secs += duration.timecode.seconds; + secs += duration.timecode.frames / timecode_frames_per_second(); + if (config.get_timecode_offset_negative()) { + return (framecnt_t) floor (secs * frame_rate()) - config.get_timecode_offset(); + } else { + return (framecnt_t) floor (secs * frame_rate()) + config.get_timecode_offset(); } break; case AnyTime::Seconds: - return (jack_nframes_t) floor (any.seconds * frame_rate()); + return (framecnt_t) floor (duration.seconds * frame_rate()); break; case AnyTime::Frames: - return any.frames; + return duration.frames; break; } - return any.frames; + return duration.frames; }