diff options
author | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
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committer | Doug McLain <doug@nostar.net> | 2008-06-02 05:02:28 +0000 |
commit | 9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (patch) | |
tree | 96ec400b83b8c1c06852b1936f684b5fbcd47a79 /libs/ardour/session_time.cc | |
parent | 2f3f697bb8e185eb43c2c50b4eefc2bcb937f269 (diff) |
remove empty sigc++2 directory
git-svn-id: svn://localhost/ardour2/branches/3.0@3432 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/session_time.cc')
-rw-r--r-- | libs/ardour/session_time.cc | 606 |
1 files changed, 0 insertions, 606 deletions
diff --git a/libs/ardour/session_time.cc b/libs/ardour/session_time.cc deleted file mode 100644 index a388e31d80..0000000000 --- a/libs/ardour/session_time.cc +++ /dev/null @@ -1,606 +0,0 @@ - -/* - 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 - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#include <iostream> -#include <cmath> -#include <unistd.h> - -#include <ardour/timestamps.h> - -#include <pbd/error.h> -#include <pbd/enumwriter.h> -#include <pbd/stacktrace.h> - -#include <ardour/ardour.h> -#include <ardour/configuration.h> -#include <ardour/audioengine.h> -#include <ardour/session.h> -#include <ardour/tempo.h> - -#include "i18n.h" - -using namespace ARDOUR; -using namespace PBD; - -/* BBT TIME*/ - -void -Session::bbt_time (nframes_t when, BBT_Time& bbt) -{ - _tempo_map->bbt_time (when, bbt); -} - -/* SMPTE TIME */ -float -Session::smpte_frames_per_second() const -{ - switch (Config->get_smpte_format()) { - case smpte_23976: - return 23.976; - - break; - case smpte_24: - return 24; - - break; - case smpte_24976: - return 24.976; - - break; - case smpte_25: - return 25; - - break; - case smpte_2997: - return 29.97; - - break; - case smpte_2997drop: - return 29.97; - - break; - case smpte_30: - return 30; - - break; - case smpte_30drop: - return 30; - - break; - case smpte_5994: - return 59.94; - - break; - case smpte_60: - return 60; - - break; - default: - cerr << "Editor received unexpected smpte type" << endl; - } - return 30.0; -} -bool -Session::smpte_drop_frames() const -{ - switch (Config->get_smpte_format()) { - case smpte_23976: - return false; - - break; - case smpte_24: - return false; - - break; - case smpte_24976: - return false; - - break; - case smpte_25: - return false; - - break; - case smpte_2997: - return false; - - break; - case smpte_2997drop: - return true; - - break; - case smpte_30: - return false; - - break; - case smpte_30drop: - return true; - - break; - case smpte_5994: - return false; - - break; - case smpte_60: - return false; - - break; - default: - cerr << "Editor received unexpected smpte type" << endl; - } - return false; -} -void -Session::sync_time_vars () -{ - _current_frame_rate = (nframes_t) round (_base_frame_rate * (1.0 + (Config->get_video_pullup()/100.0))); - _frames_per_smpte_frame = (double) _current_frame_rate / (double) smpte_frames_per_second(); - if (smpte_drop_frames()) { - _frames_per_hour = (long)(107892 * _frames_per_smpte_frame); - } else { - _frames_per_hour = (long)(3600 * rint(smpte_frames_per_second()) * _frames_per_smpte_frame); - } - _smpte_frames_per_hour = (nframes_t)rint(smpte_frames_per_second() * 3600.0); - - last_smpte_valid = false; - // smpte type bits are the middle two in the upper nibble - switch ((int) ceil (smpte_frames_per_second())) { - case 24: - mtc_smpte_bits = 0; - break; - - case 25: - mtc_smpte_bits = 0x20; - break; - - case 30: - default: - if (smpte_drop_frames()) { - mtc_smpte_bits = 0x40; - } else { - mtc_smpte_bits = 0x60; - } - break; - }; -} - -int -Session::set_smpte_format (SmpteFormat format) -{ - /* this will trigger any other changes needed */ - Config->set_smpte_format (format); - return 0; -} - -void -Session::set_smpte_offset (nframes_t off) -{ - _smpte_offset = off; - last_smpte_valid = false; - - SMPTEOffsetChanged (); /* EMIT SIGNAL */ -} - -void -Session::set_smpte_offset_negative (bool neg) -{ - _smpte_offset_negative = neg; - last_smpte_valid = false; - - SMPTEOffsetChanged (); /* EMIT SIGNAL */ -} - -void -Session::smpte_to_sample( SMPTE::Time& smpte, nframes_t& sample, bool use_offset, bool use_subframes ) const -{ - - if (smpte.drop) { - // 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 <per@sigmond.no> - - // Samples inside time dividable by 10 minutes (real time accurate) - nframes_t base_samples = (nframes_t) (((smpte.hours * 107892) + ((smpte.minutes / 10) * 17982)) * _frames_per_smpte_frame); - - // 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); - nframes_t exceeding_samples = (nframes_t) rint(exceeding_df_frames * _frames_per_smpte_frame); - sample = base_samples + exceeding_samples; - } else { - /* - Non drop is easy.. just note the use of - rint(smpte.rate) * _frames_per_smpte_frame - (frames per SMPTE second), which is larger than - frame_rate() in the non-integer SMPTE rate case. - */ - - sample = (nframes_t)rint((((smpte.hours * 60 * 60) + (smpte.minutes * 60) + smpte.seconds) * (rint(smpte.rate) * _frames_per_smpte_frame)) + (smpte.frames * _frames_per_smpte_frame)); - } - - if (use_subframes) { - sample += (long) (((double)smpte.subframes * _frames_per_smpte_frame) / Config->get_subframes_per_frame()); - } - - 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( nframes_t sample, SMPTE::Time& smpte, bool use_offset, bool use_subframes ) const -{ - nframes_t offset_sample; - - 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 * Config->get_subframes_per_frame()); - - // XXX Not sure if this is necessary anymore... - if (smpte.subframes == Config->get_subframes_per_frame()) { - // 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) rint (smpte_frames_per_second ()) * 60); - smpte_frames_left = smpte_frames_left % ((long) rint (smpte_frames_per_second ()) * 60); - smpte.seconds = smpte_frames_left / (long) rint(smpte_frames_per_second ()); - smpte.frames = smpte_frames_left % (long) rint(smpte_frames_per_second ()); - } - - if (!use_subframes) { - smpte.subframes = 0; - } - /* set frame rate and drop frame */ - smpte.rate = smpte_frames_per_second (); - smpte.drop = smpte_drop_frames(); -} - -void -Session::smpte_time (nframes_t when, SMPTE::Time& smpte) -{ - if (last_smpte_valid && when == last_smpte_when) { - smpte = last_smpte; - return; - } - - sample_to_smpte( when, smpte, true /* use_offset */, false /* use_subframes */ ); - - last_smpte_when = when; - last_smpte = smpte; - last_smpte_valid = true; -} - -void -Session::smpte_time_subframes (nframes_t when, SMPTE::Time& smpte) -{ - if (last_smpte_valid && when == last_smpte_when) { - smpte = last_smpte; - return; - } - - sample_to_smpte( when, smpte, true /* use_offset */, true /* use_subframes */ ); - - last_smpte_when = when; - last_smpte = smpte; - last_smpte_valid = true; -} - -void -Session::smpte_duration (nframes_t when, SMPTE::Time& smpte) const -{ - sample_to_smpte( when, smpte, false /* use_offset */, true /* use_subframes */ ); -} - -void -Session::smpte_duration_string (char* buf, nframes_t when) const -{ - SMPTE::Time smpte; - - smpte_duration (when, smpte); - snprintf (buf, sizeof (buf), "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, smpte.hours, smpte.minutes, smpte.seconds, smpte.frames); -} - -void -Session::smpte_time (SMPTE::Time &t) - -{ - smpte_time (_transport_frame, t); -} - -int -Session::jack_sync_callback (jack_transport_state_t state, - jack_position_t* pos) -{ - bool slave = synced_to_jack(); - - switch (state) { - case JackTransportStopped: - if (slave && _transport_frame != pos->frame && post_transport_work == 0) { - request_locate (pos->frame, 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; - if (slave) { - return _transport_frame == pos->frame && post_transport_work == 0; - } else { - return true; - } - break; - - case JackTransportRolling: - // cerr << "SYNC: rolling slave = " << slave << endl; - if (slave) { - start_transport (); - } - break; - - default: - error << string_compose (_("Unknown JACK transport state %1 in sync callback"), state) - << endmsg; - } - - return true; -} - -void -Session::jack_timebase_callback (jack_transport_state_t state, - 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); - } - -#ifdef HAVE_JACK_VIDEO_SUPPORT - //poke audio video ratio so Ardour can track Video Sync - pos->audio_frames_per_video_frame = frame_rate() / smpte_frames_per_second(); - pos->valid = jack_position_bits_t (pos->valid | JackAudioVideoRatio); -#endif - -#if 0 - /* SMPTE info */ - - t.smpte_offset = _smpte_offset; - t.smpte_frame_rate = smpte_frames_per_second(); - - if (_transport_speed) { - - if (play_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; - - } - - } else { - - t.loop_start = 0; - t.loop_end = 0; - t.transport_state = JackTransportRolling; - - } - - } - -#endif -} - -ARDOUR::nframes_t -Session::convert_to_frames_at (nframes_t position, AnyTime& any) -{ - double secs; - - switch (any.type) { - case AnyTime::BBT: - return _tempo_map->frame_time ( any.bbt); - break; - - case AnyTime::SMPTE: - /* 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 (nframes_t) floor (secs * frame_rate()) - _smpte_offset; - } - else - { - return (nframes_t) floor (secs * frame_rate()) + _smpte_offset; - } - break; - - case AnyTime::Seconds: - return (nframes_t) floor (any.seconds * frame_rate()); - break; - - case AnyTime::Frames: - return any.frames; - break; - } - - return any.frames; -} |