/*
- 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
*/
+#ifdef WAF_BUILD
+#include "libardour-config.h"
+#endif
+
#include <iostream>
#include <cmath>
#include <unistd.h>
-#include <ardour/timestamps.h>
+#include "ardour/timestamps.h"
-#include <pbd/error.h>
-#include <pbd/enumwriter.h>
-#include <pbd/stacktrace.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 "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 (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 */
-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;
+/* Timecode TIME */
- 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;
+double
+Session::timecode_frames_per_second() const
+{
+ return Timecode::timecode_to_frames_per_second (config.get_timecode_format());
}
+
bool
-Session::smpte_drop_frames() const
+Session::timecode_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;
+ return Timecode::timecode_has_drop_frames(config.get_timecode_format());
}
+
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);
+ _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 = (long)(3600 * rint(smpte_frames_per_second()) * _frames_per_smpte_frame);
+ _frames_per_hour = (int32_t)(3600 * rint(timecode_frames_per_second()) * _frames_per_timecode_frame);
}
- _smpte_frames_per_hour = (nframes_t)rint(smpte_frames_per_second() * 3600.0);
+ _timecode_frames_per_hour = rint(timecode_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())) {
+ 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 (smpte_drop_frames()) {
- mtc_smpte_bits = 0x40;
+ if (timecode_drop_frames()) {
+ mtc_timecode_bits = 0x40;
} else {
- mtc_smpte_bits = 0x60;
+ mtc_timecode_bits = 0x60;
}
break;
};
-}
-
-int
-Session::set_smpte_format (SmpteFormat format)
-{
- /* this will trigger any other changes needed */
- Config->set_smpte_format (format);
- return 0;
+ ltc_tx_parse_offset();
}
void
-Session::set_smpte_offset (nframes_t off)
+Session::timecode_to_sample( Timecode::Time& timecode, framepos_t& sample, bool use_offset, bool use_subframes ) const
{
- _smpte_offset = off;
- last_smpte_valid = false;
-
- SMPTEOffsetChanged (); /* EMIT SIGNAL */
-}
+ timecode.rate = timecode_frames_per_second();
-void
-Session::set_smpte_offset_negative (bool neg)
-{
- _smpte_offset_negative = neg;
- last_smpte_valid = false;
+ 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()
+ );
- SMPTEOffsetChanged (); /* EMIT SIGNAL */
}
void
-Session::smpte_to_sample( SMPTE::Time& smpte, nframes_t& sample, bool use_offset, bool use_subframes ) const
+Session::sample_to_timecode (framepos_t sample, Timecode::Time& timecode, bool use_offset, bool use_subframes ) const
{
+ Timecode::sample_to_timecode (
+ sample, timecode, use_offset, use_subframes,
- 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();
- }
- }
- }
+ timecode_frames_per_second(),
+ timecode_drop_frames(),
+ double(_current_frame_rate),
+ config.get_subframes_per_frame(),
+ config.get_timecode_offset_negative(), config.get_timecode_offset()
+ );
}
-
void
-Session::sample_to_smpte( nframes_t sample, SMPTE::Time& smpte, bool use_offset, bool use_subframes ) const
+Session::timecode_time (framepos_t when, Timecode::Time& timecode)
{
- 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;
+ 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 (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 (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, 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 ();
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,
- 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;
+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;
}
-ARDOUR::nframes_t
-Session::convert_to_frames_at (nframes_t position, AnyTime const & 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 (nframes_t) floor (secs * frame_rate()) - _smpte_offset;
- }
- else
- {
- return (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 (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;
}
projects / ardour.git / blobdiff