#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"
+#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
void
Session::bbt_time (framepos_t when, Timecode::BBT_Time& bbt)
{
- _tempo_map->bbt_time (when, bbt);
+ bbt = _tempo_map->bbt_at_frame (when);
}
/* Timecode TIME */
-float
+
+double
Session::timecode_frames_per_second() const
{
- switch (config.get_timecode_format()) {
- case timecode_23976:
- return 23.976;
-
- break;
- case timecode_24:
- return 24;
-
- break;
- case timecode_24976:
- return 24.976;
-
- break;
- case timecode_25:
- return 25;
-
- break;
- case timecode_2997:
- return 29.97;
-
- break;
- case timecode_2997drop:
- return 29.97;
-
- break;
- case timecode_30:
- return 30;
-
- break;
- case timecode_30drop:
- return 30;
-
- break;
- case timecode_5994:
- return 59.94;
-
- break;
- case timecode_60:
- return 60;
-
- break;
- default:
- cerr << "Editor received unexpected timecode type" << endl;
- }
- return 30.0;
+ return Timecode::timecode_to_frames_per_second (config.get_timecode_format());
}
+
bool
Session::timecode_drop_frames() const
{
- switch (config.get_timecode_format()) {
- case timecode_23976:
- return false;
-
- break;
- case timecode_24:
- return false;
-
- break;
- case timecode_24976:
- return false;
-
- break;
- case timecode_25:
- return false;
-
- break;
- case timecode_2997:
- return false;
-
- break;
- case timecode_2997drop:
- return true;
-
- break;
- case timecode_30:
- return false;
-
- break;
- case timecode_30drop:
- return true;
-
- break;
- case timecode_5994:
- return false;
-
- break;
- case timecode_60:
- return false;
-
- break;
- default:
- error << "Editor received unexpected timecode type" << endmsg;
- }
-
- return false;
+ return Timecode::timecode_has_drop_frames(config.get_timecode_format());
}
+
void
Session::sync_time_vars ()
{
- _current_frame_rate = (framecnt_t) round (_base_frame_rate * (1.0 + (config.get_video_pullup()/100.0)));
+ _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);
}
break;
};
+ ltc_tx_parse_offset();
}
void
Session::timecode_to_sample( Timecode::Time& timecode, framepos_t& sample, bool use_offset, bool use_subframes ) const
{
+ timecode.rate = timecode_frames_per_second();
- if (timecode.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:
- //
- // Timecode 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)
- framecnt_t base_samples = (framecnt_t) (((timecode.hours * 107892) + ((timecode.minutes / 10) * 17982)) * _frames_per_timecode_frame);
-
- // Samples inside time exceeding the nearest 10 minutes (always offset, see above)
- int32_t exceeding_df_minutes = timecode.minutes % 10;
- int32_t exceeding_df_seconds = (exceeding_df_minutes * 60) + timecode.seconds;
- int32_t exceeding_df_frames = (30 * exceeding_df_seconds) + timecode.frames - (2 * exceeding_df_minutes);
- framecnt_t exceeding_samples = (framecnt_t) rint(exceeding_df_frames * _frames_per_timecode_frame);
- sample = base_samples + exceeding_samples;
- } else {
- /*
- Non drop is easy.. just note the use of
- rint(timecode.rate) * _frames_per_timecode_frame
- (frames per Timecode second), which is larger than
- frame_rate() in the non-integer Timecode rate case.
- */
-
- sample = (framecnt_t)rint((((timecode.hours * 60 * 60) + (timecode.minutes * 60) + timecode.seconds) * (rint(timecode.rate) * _frames_per_timecode_frame)) + (timecode.frames * _frames_per_timecode_frame));
- }
-
- if (use_subframes) {
- sample += (int32_t) (((double)timecode.subframes * _frames_per_timecode_frame) / config.get_subframes_per_frame());
- }
-
- if (use_offset) {
- if (config.get_timecode_offset_negative()) {
- if (sample >= config.get_timecode_offset()) {
- sample -= config.get_timecode_offset();
- } else {
- /* Prevent song-time from becoming negative */
- sample = 0;
- }
- } else {
- if (timecode.negative) {
- if (sample <= config.get_timecode_offset()) {
- sample = config.get_timecode_offset() - sample;
- } else {
- sample = 0;
- }
- } else {
- sample += config.get_timecode_offset();
- }
- }
- }
+ 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::sample_to_timecode (framepos_t sample, Timecode::Time& timecode, bool use_offset, bool use_subframes ) const
{
- framepos_t offset_sample;
-
- if (!use_offset) {
- offset_sample = sample;
- timecode.negative = false;
- } else {
- if (config.get_timecode_offset_negative()) {
- offset_sample = sample + config.get_timecode_offset ();
- timecode.negative = false;
- } else {
- if (sample < config.get_timecode_offset()) {
- offset_sample = (config.get_timecode_offset() - sample);
- timecode.negative = true;
- } else {
- offset_sample = sample - config.get_timecode_offset();
- timecode.negative = false;
- }
- }
- }
-
- double timecode_frames_left_exact;
- double timecode_frames_fraction;
- uint32_t timecode_frames_left;
-
- // Extract whole hours. Do this to prevent rounding errors with
- // high sample numbers in the calculations that follow.
- timecode.hours = offset_sample / _frames_per_hour;
- offset_sample = offset_sample % _frames_per_hour;
-
- // Calculate exact number of (exceeding) timecode frames and fractional frames
- timecode_frames_left_exact = (double) offset_sample / _frames_per_timecode_frame;
- timecode_frames_fraction = timecode_frames_left_exact - floor( timecode_frames_left_exact );
- timecode.subframes = (int32_t) rint(timecode_frames_fraction * config.get_subframes_per_frame());
-
- // XXX Not sure if this is necessary anymore...
- if (timecode.subframes == config.get_subframes_per_frame()) {
- // This can happen with 24 fps (and 29.97 fps ?)
- timecode_frames_left_exact = ceil( timecode_frames_left_exact );
- timecode.subframes = 0;
- }
+ Timecode::sample_to_timecode (
+ sample, timecode, use_offset, use_subframes,
- // Extract hour-exceeding frames for minute, second and frame calculations
- timecode_frames_left = (uint32_t) floor (timecode_frames_left_exact);
-
- if (timecode_drop_frames()) {
- // See int32_t explanation in timecode_to_sample()...
-
- // Number of 10 minute chunks
- timecode.minutes = (timecode_frames_left / 17982) * 10; // exactly 17982 frames in 10 minutes
- // frames exceeding the nearest 10 minute barrier
- int32_t exceeding_df_frames = timecode_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)
- int32_t 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
- timecode.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 (timecode.minutes % 10) {
- // Every minute except every 10th
- if (exceeding_df_frames < 28) {
- // First second, frames 0 and 1 are skipped
- timecode.seconds = 0;
- timecode.frames = exceeding_df_frames + 2;
- } else {
- // All other seconds, all 30 frames are counted
- exceeding_df_frames -= 28;
- timecode.seconds = (exceeding_df_frames / 30) + 1;
- timecode.frames = exceeding_df_frames % 30;
- }
- } else {
- // Every 10th minute, all 30 frames counted in all seconds
- timecode.seconds = exceeding_df_frames / 30;
- timecode.frames = exceeding_df_frames % 30;
- }
- } else {
- // Non drop is easy
- timecode.minutes = timecode_frames_left / ((int32_t) rint (timecode_frames_per_second ()) * 60);
- timecode_frames_left = timecode_frames_left % ((int32_t) rint (timecode_frames_per_second ()) * 60);
- timecode.seconds = timecode_frames_left / (int32_t) rint(timecode_frames_per_second ());
- timecode.frames = timecode_frames_left % (int32_t) rint(timecode_frames_per_second ());
- }
+ timecode_frames_per_second(),
+ timecode_drop_frames(),
+ double(_current_frame_rate),
- if (!use_subframes) {
- timecode.subframes = 0;
- }
- /* set frame rate and drop frame */
- timecode.rate = timecode_frames_per_second ();
- timecode.drop = timecode_drop_frames();
+ config.get_subframes_per_frame(),
+ config.get_timecode_offset_negative(), config.get_timecode_offset()
+ );
}
void
return;
}
- sample_to_timecode( when, timecode, true /* use_offset */, false /* use_subframes */ );
+ this->sample_to_timecode( when, timecode, true /* use_offset */, false /* use_subframes */ );
last_timecode_when = when;
last_timecode = timecode;
return;
}
- sample_to_timecode( when, timecode, true /* use_offset */, true /* use_subframes */ );
+ this->sample_to_timecode( when, timecode, true /* use_offset */, true /* use_subframes */ );
last_timecode_when = when;
last_timecode = timecode;
void
Session::timecode_duration (framecnt_t when, Timecode::Time& timecode) const
{
- sample_to_timecode( when, timecode, false /* use_offset */, true /* use_subframes */ );
+ this->sample_to_timecode( when, timecode, false /* use_offset */, true /* use_subframes */ );
}
void
-Session::timecode_duration_string (char* buf, framepos_t when) const
+Session::timecode_duration_string (char* buf, size_t len, framepos_t when) const
{
Timecode::Time timecode;
timecode_duration (when, timecode);
- snprintf (buf, sizeof (buf), "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
+ snprintf (buf, len, "%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32 ":%02" PRIu32, timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
}
void
}
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:
+ 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*/,
- pframes_t /*nframes*/,
- jack_position_t* pos,
- int /*new_position*/)
-{
- Timecode::BBT_Time bbt;
-
- if (pos->frame != _transport_frame) {
- cerr << "ARDOUR says " << _transport_frame << " JACK says " << pos->frame << endl;
- }
-
- /* BBT info */
-
- if (_tempo_map) {
-
- TempoMetric 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().divisions_per_bar();
- pos->beat_type = metric.meter().note_divisor();
- pos->ticks_per_beat = Timecode::BBT_Time::ticks_per_bar_division;
- 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() / timecode_frames_per_second();
- pos->valid = jack_position_bits_t (pos->valid | JackAudioVideoRatio);
-#endif
-
-#if 0
- /* Timecode info */
-
- pos->timecode_offset = config.get_timecode_offset();
- t.timecode_frame_rate = timecode_frames_per_second();
- pos->valid = jack_position_bits_t (pos->valid | JackPositionTimecode;
-
- 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::framecnt_t
Session::convert_to_frames (AnyTime const & position)
switch (position.type) {
case AnyTime::BBT:
- return _tempo_map->frame_time (position.bbt);
+ return _tempo_map->frame_at_bbt (position.bbt);
break;
case AnyTime::Timecode:
projects / ardour.git / blobdiff