/*
- 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
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 <iostream>
#include <cmath>
#include <unistd.h>
-#include <ardour/timestamps.h>
+#include "ardour/timestamps.h"
-#include <pbd/error.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/ardour.h"
+#include "ardour/configuration.h"
+#include "ardour/audioengine.h"
+#include "ardour/session.h"
+#include "ardour/tempo.h"
#include "i18n.h"
+using namespace std;
using namespace ARDOUR;
using namespace PBD;
}
/* SMPTE TIME */
-
-void
-Session::sync_time_vars ()
+float
+Session::smpte_frames_per_second() const
{
- _current_frame_rate = (nframes_t) round (_base_frame_rate * (1.0 + (Config->get_video_pullup()/100.0)));
- _frames_per_hour = _current_frame_rate * 3600;
- _frames_per_smpte_frame = (double) _current_frame_rate / (double) Config->get_smpte_frames_per_second();
- _smpte_frames_per_hour = (unsigned long) (Config->get_smpte_frames_per_second() * 3600.0);
+ 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;
-int
-Session::set_smpte_type (float fps, bool drop_frames)
+ 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 ()
{
- Config->set_smpte_frames_per_second (fps);
- Config->set_smpte_drop_frames (drop_frames);
+ _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 (fps)) {
+ switch ((int) ceil (smpte_frames_per_second())) {
case 24:
mtc_smpte_bits = 0;
break;
case 30:
default:
- if (drop_frames) {
+ if (smpte_drop_frames()) {
mtc_smpte_bits = 0x40;
} else {
mtc_smpte_bits = 0x60;
}
break;
};
-
- return 0;
}
void
void
Session::smpte_to_sample( SMPTE::Time& smpte, nframes_t& sample, bool use_offset, bool use_subframes ) const
{
- if (Config->get_smpte_drop_frames()) {
+
+ 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
// 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
// 0:10:00:00 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 = ((smpte.hours * 60 * 60) + ((smpte.minutes / 10) * 10 * 60)) * frame_rate();
+ 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;
nframes_t exceeding_samples = (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()) + (nframes_t)rint(smpte.frames * _frames_per_smpte_frame);
+ /*
+ 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());
+ 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()) {
}
}
}
+
}
}
}
}
-
+
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());
-
+ 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()) {
+ 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 (Config->get_smpte_drop_frames()) {
+ if (smpte_drop_frames()) {
// See long explanation in smpte_to_sample()...
// Number of 10 minute chunks
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
}
} else {
// Non drop is easy
- smpte.minutes = smpte_frames_left / ((long) Config->get_smpte_frames_per_second () * 60);
- smpte_frames_left = smpte_frames_left % ((long) Config->get_smpte_frames_per_second () * 60);
- smpte.seconds = smpte_frames_left / (long) Config->get_smpte_frames_per_second ();
- smpte.frames = smpte_frames_left % (long) Config->get_smpte_frames_per_second ();
+ 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
smpte = last_smpte;
return;
}
-
+
sample_to_smpte( when, smpte, true /* use_offset */, true /* use_subframes */ );
last_smpte_when = when;
switch (state) {
case JackTransportStopped:
if (slave && _transport_frame != pos->frame && post_transport_work == 0) {
- request_locate (pos->frame, false);
+ 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) {
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,
+Session::jack_timebase_callback (jack_transport_state_t /*state*/,
+ nframes_t /*nframes*/,
jack_position_t* pos,
- int new_position)
+ int /*new_position*/)
{
BBT_Time bbt;
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;
#ifdef HAVE_JACK_VIDEO_SUPPORT
//poke audio video ratio so Ardour can track Video Sync
- pos->audio_frames_per_video_frame = frame_rate() / Config->get_smpte_frames_per_second ();
+ pos->audio_frames_per_video_frame = frame_rate() / smpte_frames_per_second();
pos->valid = jack_position_bits_t (pos->valid | JackAudioVideoRatio);
#endif
/* SMPTE info */
t.smpte_offset = _smpte_offset;
- t.smpte_frame_rate = Config->get_smpte_frames_per_second ();
+ t.smpte_frame_rate = smpte_frames_per_second();
if (_transport_speed) {
}
- }
+ }
-#endif
+#endif
}
-nframes_t
-Session::convert_to_frames_at (nframes_t position, AnyTime& any)
+ARDOUR::nframes_t
+Session::convert_to_frames_at (nframes_t /*position*/, AnyTime const & any)
{
double secs;
-
+
switch (any.type) {
case AnyTime::BBT:
return _tempo_map->frame_time ( any.bbt);
secs = any.smpte.hours * 60 * 60;
secs += any.smpte.minutes * 60;
secs += any.smpte.seconds;
- secs += any.smpte.frames / Config->get_smpte_frames_per_second ();
- if (_smpte_offset_negative)
+ secs += any.smpte.frames / smpte_frames_per_second();
+ if (_smpte_offset_negative)
{
return (nframes_t) floor (secs * frame_rate()) - _smpte_offset;
}
projects / ardour.git / blobdiff