using namespace PBD;
using namespace Timecode;
-#define FLYWHEEL_TIMEOUT ( 1 * session.frame_rate() )
+#define FLYWHEEL_TIMEOUT ( 1 * session.sample_rate() )
LTC_Slave::LTC_Slave (Session& s)
: session (s)
{
- frames_per_ltc_frame = session.samples_per_timecode_frame();
+ samples_per_ltc_frame = session.samples_per_timecode_frame();
timecode.rate = session.timecode_frames_per_second();
timecode.drop = session.timecode_drop_frames();
a3e_timecode = session.config.get_timecode_format();
printed_timecode_warning = false;
ltc_detect_fps_cnt = ltc_detect_fps_max = 0;
- memset(&prev_frame, 0, sizeof(LTCFrameExt));
+ memset(&prev_sample, 0, sizeof(LTCFrameExt));
- decoder = ltc_decoder_create((int) frames_per_ltc_frame, 128 /*queue size*/);
+ decoder = ltc_decoder_create((int) samples_per_ltc_frame, 128 /*queue size*/);
session.config.ParameterChanged.connect_same_thread (config_connection, boost::bind (<C_Slave::parameter_changed, this, _1));
parse_timecode_offset();
}
}
-ARDOUR::framecnt_t
+ARDOUR::samplecnt_t
LTC_Slave::resolution () const
{
- return (framecnt_t) (session.frame_rate() / 1000);
+ return (samplecnt_t) (session.sample_rate() / 1000);
}
bool
}
void
-LTC_Slave::parse_ltc(const ARDOUR::pframes_t nframes, const Sample* const in, const ARDOUR::framecnt_t posinfo)
+LTC_Slave::parse_ltc(const ARDOUR::pframes_t nframes, const Sample* const in, const ARDOUR::samplecnt_t posinfo)
{
pframes_t i;
unsigned char sound[8192];
}
bool
-LTC_Slave::equal_ltc_frame_time(LTCFrame *a, LTCFrame *b) {
+LTC_Slave::equal_ltc_sample_time(LTCFrame *a, LTCFrame *b) {
if ( a->frame_units != b->frame_units
|| a->frame_tens != b->frame_tens
|| a->dfbit != b->dfbit
}
bool
-LTC_Slave::detect_discontinuity(LTCFrameExt *frame, int fps, bool fuzzy) {
+LTC_Slave::detect_discontinuity(LTCFrameExt *sample, int fps, bool fuzzy) {
bool discontinuity_detected = false;
if (fuzzy && (
- ( frame->reverse && prev_frame.ltc.frame_units == 0)
- ||(!frame->reverse && frame->ltc.frame_units == 0)
+ ( sample->reverse && prev_sample.ltc.frame_units == 0)
+ ||(!sample->reverse && sample->ltc.frame_units == 0)
)) {
- memcpy(&prev_frame, frame, sizeof(LTCFrameExt));
+ memcpy(&prev_sample, sample, sizeof(LTCFrameExt));
return false;
}
- if (frame->reverse) {
- ltc_frame_decrement(&prev_frame.ltc, fps, LTC_TV_525_60, 0);
+ if (sample->reverse) {
+ ltc_frame_decrement(&prev_sample.ltc, fps, LTC_TV_525_60, 0);
} else {
- ltc_frame_increment(&prev_frame.ltc, fps, LTC_TV_525_60, 0);
+ ltc_frame_increment(&prev_sample.ltc, fps, LTC_TV_525_60, 0);
}
- if (!equal_ltc_frame_time(&prev_frame.ltc, &frame->ltc)) {
+ if (!equal_ltc_sample_time(&prev_sample.ltc, &sample->ltc)) {
discontinuity_detected = true;
}
- memcpy(&prev_frame, frame, sizeof(LTCFrameExt));
+ memcpy(&prev_sample, sample, sizeof(LTCFrameExt));
return discontinuity_detected;
}
if (detected_fps != 0 && (detected_fps != timecode.rate || df != timecode.drop)) {
timecode.rate = detected_fps;
timecode.drop = df;
- frames_per_ltc_frame = double(session.frame_rate()) / timecode.rate;
- DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC reset to FPS: %1%2 ; audio-frames per LTC: %3\n",
- detected_fps, df?"df":"ndf", frames_per_ltc_frame));
+ samples_per_ltc_frame = double(session.sample_rate()) / timecode.rate;
+ DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC reset to FPS: %1%2 ; audio-samples per LTC: %3\n",
+ detected_fps, df?"df":"ndf", samples_per_ltc_frame));
fps_changed=true;
}
}
void
-LTC_Slave::process_ltc(framepos_t const /*now*/)
+LTC_Slave::process_ltc(samplepos_t const /*now*/)
{
- LTCFrameExt frame;
+ LTCFrameExt sample;
enum LTC_TV_STANDARD tv_standard = LTC_TV_625_50;
- while (ltc_decoder_read(decoder, &frame)) {
+ while (ltc_decoder_read(decoder, &sample)) {
SMPTETimecode stime;
- ltc_frame_to_time(&stime, &frame.ltc, 0);
+ ltc_frame_to_time(&stime, &sample.ltc, 0);
timecode.negative = false;
timecode.subframes = 0;
/* set timecode.rate and timecode.drop: */
- bool ltc_is_static = equal_ltc_frame_time(&prev_frame.ltc, &frame.ltc);
+ bool ltc_is_static = equal_ltc_sample_time(&prev_sample.ltc, &sample.ltc);
- if (detect_discontinuity(&frame, ceil(timecode.rate), !fps_detected)) {
+ if (detect_discontinuity(&sample, ceil(timecode.rate), !fps_detected)) {
if (fps_detected) { ltc_detect_fps_cnt = ltc_detect_fps_max = 0; }
fps_detected=false;
}
- if (!ltc_is_static && detect_ltc_fps(stime.frame, (frame.ltc.dfbit)? true : false)) {
+ if (!ltc_is_static && detect_ltc_fps(stime.frame, (sample.ltc.dfbit)? true : false)) {
reset();
fps_detected=true;
}
stime.hours,
stime.mins,
stime.secs,
- (frame.ltc.dfbit) ? '.' : ':',
+ (sample.ltc.dfbit) ? '.' : ':',
stime.frame,
- frame.off_start,
- frame.off_end,
- frame.reverse ? " R" : " "
+ sample.off_start,
+ sample.off_end,
+ sample.reverse ? " R" : " "
);
#endif
- /* when a full LTC frame is decoded, the timecode the LTC frame
+ /* when a full LTC sample is decoded, the timecode the LTC sample
* is referring has just passed.
* So we send the _next_ timecode which
- * is expected to start at the end of the current frame
+ * is expected to start at the end of the current sample
*/
int fps_i = ceil(timecode.rate);
break;
}
- if (!frame.reverse) {
- ltc_frame_increment(&frame.ltc, fps_i, tv_standard, 0);
- ltc_frame_to_time(&stime, &frame.ltc, 0);
+ if (!sample.reverse) {
+ ltc_frame_increment(&sample.ltc, fps_i, tv_standard, 0);
+ ltc_frame_to_time(&stime, &sample.ltc, 0);
transport_direction = 1;
- frame.off_start -= ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
- frame.off_end -= ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
+ sample.off_start -= ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
+ sample.off_end -= ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
} else {
- ltc_frame_decrement(&frame.ltc, fps_i, tv_standard, 0);
- int off = frame.off_end - frame.off_start;
- frame.off_start += off - ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
- frame.off_end += off - ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
+ ltc_frame_decrement(&sample.ltc, fps_i, tv_standard, 0);
+ int off = sample.off_end - sample.off_start;
+ sample.off_start += off - ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
+ sample.off_end += off - ltc_frame_alignment(session.samples_per_timecode_frame(), tv_standard);
transport_direction = -1;
}
timecode.frames = stime.frame;
/* map LTC timecode to session TC setting */
- framepos_t ltc_frame; ///< audio-frame corresponding to LTC frame
+ samplepos_t ltc_frame; ///< audio-sample corresponding to LTC sample
Timecode::timecode_to_sample (timecode, ltc_frame, true, false,
- double(session.frame_rate()),
+ double(session.sample_rate()),
session.config.get_subframes_per_frame(),
timecode_negative_offset, timecode_offset
);
ltc_frame += ltc_slave_latency.max + session.worst_playback_latency();
- framepos_t cur_timestamp = frame.off_end + 1;
- DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC F: %1 LF: %2 N: %3 L: %4\n", ltc_frame, last_ltc_frame, cur_timestamp, last_timestamp));
- if (frame.off_end + 1 <= last_timestamp || last_timestamp == 0) {
+ samplepos_t cur_timestamp = sample.off_end + 1;
+ DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC F: %1 LF: %2 N: %3 L: %4\n", ltc_frame, last_ltc_sample, cur_timestamp, last_timestamp));
+ if (sample.off_end + 1 <= last_timestamp || last_timestamp == 0) {
DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC speed: UNCHANGED: %1\n", ltc_speed));
} else {
- ltc_speed = double(ltc_frame - last_ltc_frame) / double(cur_timestamp - last_timestamp);
+ ltc_speed = double(ltc_frame - last_ltc_sample) / double(cur_timestamp - last_timestamp);
DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC speed: %1\n", ltc_speed));
}
ltc_speed = 0;
}
- last_timestamp = frame.off_end + 1;
- last_ltc_frame = ltc_frame;
- } /* end foreach decoded LTC frame */
+ last_timestamp = sample.off_end + 1;
+ last_ltc_sample = ltc_frame;
+ } /* end foreach decoded LTC sample */
}
void
-LTC_Slave::init_engine_dll (framepos_t pos, int32_t inc)
+LTC_Slave::init_engine_dll (samplepos_t pos, int32_t inc)
{
- double omega = 2.0 * M_PI * double(inc) / double(session.frame_rate());
+ double omega = 2.0 * M_PI * double(inc) / double(session.sample_rate());
b = 1.4142135623730950488 * omega;
c = omega * omega;
* so it is OK to use get_buffer()
*/
bool
-LTC_Slave::speed_and_position (double& speed, framepos_t& pos)
+LTC_Slave::speed_and_position (double& speed, samplepos_t& pos)
{
bool engine_init_called = false;
- framepos_t now = session.engine().sample_time_at_cycle_start();
- framepos_t sess_pos = session.transport_frame(); // corresponds to now
- framecnt_t nframes = session.engine().samples_per_cycle();
+ samplepos_t now = session.engine().sample_time_at_cycle_start();
+ samplepos_t sess_pos = session.transport_sample(); // corresponds to now
+ samplecnt_t nframes = session.engine().samples_per_cycle();
Sample* in;
in = (Sample*) AudioEngine::instance()->port_engine().get_buffer (ltcport->port_handle(), nframes);
- frameoffset_t skip = now - (monotonic_cnt + nframes);
+ sampleoffset_t skip = now - (monotonic_cnt + nframes);
monotonic_cnt = now;
DEBUG_TRACE (DEBUG::LTC, string_compose ("speed_and_position - TID:%1 | latency: %2 | skip %3\n", pthread_name(), ltc_slave_latency.max, skip));
ActiveChanged (true); /* EMIT SIGNAL */
engine_dll_initstate = transport_direction;
- init_engine_dll(last_ltc_frame + rint(ltc_speed * double(2 * nframes + now - last_timestamp)),
+ init_engine_dll(last_ltc_sample + rint(ltc_speed * double(2 * nframes + now - last_timestamp)),
session.engine().samples_per_cycle());
engine_init_called = true;
}
if (in) {
DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC Process eng-tme: %1 eng-pos: %2\n", now, sess_pos));
/* when the jack-graph changes and if ardour performs
- * locates, the audioengine is stopped (skipping frames) while
+ * locates, the audioengine is stopped (skipping samples) while
* jack [time] moves along.
*/
if (skip > 0) {
- DEBUG_TRACE (DEBUG::LTC, string_compose("engine skipped %1 frames. Feeding silence to LTC parser.\n", skip));
+ DEBUG_TRACE (DEBUG::LTC, string_compose("engine skipped %1 samples. Feeding silence to LTC parser.\n", skip));
if (skip >= 8192) skip = 8192;
unsigned char sound[8192];
memset(sound, 0x80, sizeof(char) * skip);
ltc_decoder_write(decoder, sound, nframes, now);
} else if (skip != 0) {
/* this should never happen. it may if monotonic_cnt, now overflow on 64bit */
- DEBUG_TRACE (DEBUG::LTC, string_compose("engine skipped %1 frames\n", skip));
+ DEBUG_TRACE (DEBUG::LTC, string_compose("engine skipped %1 samples\n", skip));
reset();
}
if (last_timestamp == 0) {
DEBUG_TRACE (DEBUG::LTC, "last timestamp == 0\n");
speed = 0;
- pos = session.transport_frame();
+ pos = session.transport_sample();
return true;
} else if (ltc_speed != 0) {
if (delayedlocked > 1) delayedlocked--;
DEBUG_TRACE (DEBUG::LTC, "flywheel timeout\n");
reset();
speed = 0;
- pos = session.transport_frame();
+ pos = session.transport_sample();
ActiveChanged (false); /* EMIT SIGNAL */
return true;
}
* DEBUG::Transport: realtime stop @ NNN
* DEBUG::Transport: Butler transport work, todo = PostTransportStop,PostTransportLocate,PostTransportClearSubstate
*
- * [engine skips frames to locate, jack time keeps rolling on]
+ * [engine skips samples to locate, jack time keeps rolling on]
*
* the second cycle:
*
if (engine_dll_initstate == 0) {
DEBUG_TRACE (DEBUG::LTC, "engine DLL not initialized. ltc_speed\n");
speed = 0;
- pos = last_ltc_frame + rint(ltc_speed * double(2 * nframes + now - last_timestamp));
+ pos = last_ltc_sample + rint(ltc_speed * double(2 * nframes + now - last_timestamp));
return true;
}
- /* interpolate position according to speed and time since last LTC-frame*/
+ /* interpolate position according to speed and time since last LTC-sample*/
double speed_flt = ltc_speed;
double elapsed = (now - last_timestamp) * speed_flt;
if (!engine_init_called) {
- const double e = elapsed + double (last_ltc_frame - sess_pos);
+ const double e = elapsed + double (last_ltc_sample - sess_pos);
t0 = t1;
t1 += b * e + e2;
e2 += c * e;
elapsed += 2.0 * nframes * ltc_speed; /* see note above */
}
- pos = last_ltc_frame + rint(elapsed);
+ pos = last_ltc_sample + rint(elapsed);
speed = speed_flt;
current_delta = (pos - sess_pos);
- if (((pos < 0) || (labs(current_delta) > 2 * session.frame_rate()))) {
+ if (((pos < 0) || (labs(current_delta) > 2 * session.sample_rate()))) {
DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC large drift: %1\n", current_delta));
reset();
speed = 0;
}
DEBUG_TRACE (DEBUG::LTC, string_compose ("LTCsync spd: %1 pos: %2 | last-pos: %3 elapsed: %4 delta: %5\n",
- speed, pos, last_ltc_frame, elapsed, current_delta));
+ speed, pos, last_ltc_sample, elapsed, current_delta));
/* provide a .1% deadzone to lock the speed */
if (fabs(speed - 1.0) <= 0.001) {
else if (rint(timecode.rate * 100) == 2997 && timecode.drop)
return (Config->get_timecode_source_2997() ? timecode_2997000drop : timecode_2997drop);
else if (timecode.rate == 30 && timecode.drop)
- return timecode_2997drop; // timecode_30drop; // LTC counting to 30 frames w/DF *means* 29.97 df
+ return timecode_2997drop; // timecode_30drop; // LTC counting to 30 samples w/DF *means* 29.97 df
else if (timecode.rate == 30 && !timecode.drop)
return timecode_30;
char delta[80];
if (last_timestamp == 0 || engine_dll_initstate == 0) {
snprintf(delta, sizeof(delta), "\u2012\u2012\u2012\u2012");
- } else if ((monotonic_cnt - last_timestamp) > 2 * frames_per_ltc_frame) {
+ } else if ((monotonic_cnt - last_timestamp) > 2 * samples_per_ltc_frame) {
snprintf(delta, sizeof(delta), "%s", _("flywheel"));
} else {
snprintf(delta, sizeof(delta), "\u0394<span foreground=\"%s\" face=\"monospace\" >%s%s%lld</span>sm",
projects / ardour.git / blobdiff