X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fltc_slave.cc;h=ab84cf6201b11aa4153b82561a019446d7f7af70;hb=3fef6a3b8d14305e76728b4c21aeaf04b8b4dbe3;hp=9153facb8c151fe293663bfa5dc3ed6cd9febe81;hpb=4c13d205d4adc5dde130e199ea1f228ce670b588;p=ardour.git diff --git a/libs/ardour/ltc_slave.cc b/libs/ardour/ltc_slave.cc index 9153facb8c..ab84cf6201 100644 --- a/libs/ardour/ltc_slave.cc +++ b/libs/ardour/ltc_slave.cc @@ -19,13 +19,14 @@ */ #include #include -#include #include #include #include "pbd/error.h" +#include "pbd/pthread_utils.h" #include "ardour/debug.h" +#include "ardour/profile.h" #include "ardour/slave.h" #include "ardour/session.h" #include "ardour/audioengine.h" @@ -51,18 +52,30 @@ LTC_Slave::LTC_Slave (Session& s) did_reset_tc_format = false; delayedlocked = 10; monotonic_cnt = 0; + fps_detected=false; + sync_lock_broken = false; - ltc_timecode = timecode_60; // track changes of LTC timecode - a3e_timecode = timecode_60; // track canges of Ardour's timecode + ltc_timecode = session.config.get_timecode_format(); + 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)); decoder = ltc_decoder_create((int) frames_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(); reset(); + resync_latency(); + session.Xrun.connect_same_thread (port_connections, boost::bind (<C_Slave::resync_xrun, this)); + session.engine().GraphReordered.connect_same_thread (port_connections, boost::bind (<C_Slave::resync_latency, this)); } LTC_Slave::~LTC_Slave() { + port_connections.drop_connections(); + config_connection.disconnect(); + if (did_reset_tc_format) { session.config.set_timecode_format (saved_tc_format); } @@ -70,10 +83,30 @@ LTC_Slave::~LTC_Slave() ltc_decoder_free(decoder); } +void +LTC_Slave::parse_timecode_offset() { + Timecode::Time offset_tc; + Timecode::parse_timecode_format(session.config.get_slave_timecode_offset(), offset_tc); + offset_tc.rate = session.timecode_frames_per_second(); + offset_tc.drop = session.timecode_drop_frames(); + session.timecode_to_sample(offset_tc, timecode_offset, false, false); + timecode_negative_offset = offset_tc.negative; +} + +void +LTC_Slave::parameter_changed (std::string const & p) +{ + if (p == "slave-timecode-offset" + || p == "timecode-format" + ) { + parse_timecode_offset(); + } +} + ARDOUR::framecnt_t LTC_Slave::resolution () const { - return (framecnt_t) (frames_per_ltc_frame); + return (framecnt_t) (session.frame_rate() / 1000); } bool @@ -88,6 +121,27 @@ LTC_Slave::ok() const return true; } +void +LTC_Slave::resync_xrun() +{ + DEBUG_TRACE (DEBUG::LTC, "LTC resync_xrun()\n"); + engine_dll_initstate = 0; + sync_lock_broken = false; +} + +void +LTC_Slave::resync_latency() +{ + DEBUG_TRACE (DEBUG::LTC, "LTC resync_latency()\n"); + engine_dll_initstate = 0; + sync_lock_broken = false; + + if (!session.deletion_in_progress() && session.ltc_output_io()) { /* check if Port exits */ + boost::shared_ptr ltcport = session.ltc_input_port(); + ltcport->get_connected_latency_range (ltc_slave_latency, false); + } +} + void LTC_Slave::reset() { @@ -97,16 +151,19 @@ LTC_Slave::reset() transport_direction = 0; ltc_speed = 0; engine_dll_initstate = 0; + sync_lock_broken = false; + + ActiveChanged (false); /* EMIT SIGNAL */ } void -LTC_Slave::parse_ltc(const jack_nframes_t nframes, const jack_default_audio_sample_t * const in, const framecnt_t posinfo) +LTC_Slave::parse_ltc(const ARDOUR::pframes_t nframes, const Sample* const in, const ARDOUR::framecnt_t posinfo) { - jack_nframes_t i; + pframes_t i; unsigned char sound[8192]; if (nframes > 8192) { /* TODO warn once or wrap, loop conversion below - * does A3 support > 8192 spp anyway? + * does jack/A3 support > 8192 spp anyway? */ return; } @@ -119,9 +176,52 @@ LTC_Slave::parse_ltc(const jack_nframes_t nframes, const jack_default_audio_samp return; } +bool +LTC_Slave::equal_ltc_frame_time(LTCFrame *a, LTCFrame *b) { + if ( a->frame_units != b->frame_units + || a->frame_tens != b->frame_tens + || a->dfbit != b->dfbit + || a->secs_units != b->secs_units + || a->secs_tens != b->secs_tens + || a->mins_units != b->mins_units + || a->mins_tens != b->mins_tens + || a->hours_units != b->hours_units + || a->hours_tens != b->hours_tens + ) { + return false; + } + return true; +} + +bool +LTC_Slave::detect_discontinuity(LTCFrameExt *frame, 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) + )) { + memcpy(&prev_frame, frame, sizeof(LTCFrameExt)); + return false; + } + + if (frame->reverse) { + ltc_frame_decrement(&prev_frame.ltc, fps, LTC_TV_525_60, 0); + } else { + ltc_frame_increment(&prev_frame.ltc, fps, LTC_TV_525_60, 0); + } + if (!equal_ltc_frame_time(&prev_frame.ltc, &frame->ltc)) { + discontinuity_detected = true; + } + + memcpy(&prev_frame, frame, sizeof(LTCFrameExt)); + return discontinuity_detected; +} + bool LTC_Slave::detect_ltc_fps(int frameno, bool df) { + bool fps_changed = false; double detected_fps = 0; if (frameno > ltc_detect_fps_max) { @@ -129,22 +229,23 @@ LTC_Slave::detect_ltc_fps(int frameno, bool df) } ltc_detect_fps_cnt++; - if (ltc_detect_fps_cnt > 40) - { - if (ltc_detect_fps_cnt > ltc_detect_fps_max - && ( ceil(timecode.rate) != (ltc_detect_fps_max + 1) - || timecode.drop != df - ) - ) - { - DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC detected FPS %1%2", - ltc_detect_fps_max + 1, timecode.drop ? "df" : "")); + if (ltc_detect_fps_cnt > 40) { + if (ltc_detect_fps_cnt > ltc_detect_fps_max) { detected_fps = ltc_detect_fps_max + 1; if (df) { /* LTC df -> indicates fractional framerate */ - detected_fps = detected_fps * 1000.0 / 1001.0; + if (Config->get_timecode_source_2997()) { + detected_fps = detected_fps * 999.0 / 1000.0; + } else { + detected_fps = detected_fps * 1000.0 / 1001.0; + } + } + + if (timecode.rate != detected_fps || timecode.drop != df) { + DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC detected FPS: %1%2\n", detected_fps, df?"df":"ndf")); + } else { + detected_fps = 0; /* no cange */ } - DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC detected FPS: %1%2\n", detected_fps, df?"df":"ndf")); } ltc_detect_fps_cnt = ltc_detect_fps_max = 0; } @@ -156,49 +257,54 @@ LTC_Slave::detect_ltc_fps(int frameno, bool 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)); - return true; // reset() + fps_changed=true; } /* poll and check session TC */ - if (1) { - TimecodeFormat tc_format = apparent_timecode_format(); - TimecodeFormat cur_timecode = session.config.get_timecode_format(); - if (Config->get_timecode_sync_frame_rate()) { - /* enforce time-code */ - if (!did_reset_tc_format) { - saved_tc_format = cur_timecode; - did_reset_tc_format = true; - } - if (cur_timecode != tc_format) { - warning << string_compose(_("Session framerate adjusted from %1 TO: LTC's %2."), + TimecodeFormat tc_format = apparent_timecode_format(); + TimecodeFormat cur_timecode = session.config.get_timecode_format(); + + if (Config->get_timecode_sync_frame_rate()) { + /* enforce time-code */ + if (!did_reset_tc_format) { + saved_tc_format = cur_timecode; + did_reset_tc_format = true; + } + if (cur_timecode != tc_format) { + if (ceil(Timecode::timecode_to_frames_per_second(cur_timecode)) != ceil(Timecode::timecode_to_frames_per_second(tc_format))) { + warning << string_compose(_("Session framerate adjusted from %1 to LTC's %2."), Timecode::timecode_format_name(cur_timecode), Timecode::timecode_format_name(tc_format)) << endmsg; - session.config.set_timecode_format (tc_format); } - } else { - /* only warn about TC mismatch */ - if (ltc_timecode != tc_format) printed_timecode_warning = false; - if (a3e_timecode != cur_timecode) printed_timecode_warning = false; + session.config.set_timecode_format (tc_format); + } + } else { + /* only warn about TC mismatch */ + if (ltc_timecode != tc_format) printed_timecode_warning = false; + if (a3e_timecode != cur_timecode) printed_timecode_warning = false; - if (cur_timecode != tc_format && ! printed_timecode_warning) { + if (cur_timecode != tc_format && ! printed_timecode_warning) { + if (ceil(Timecode::timecode_to_frames_per_second(cur_timecode)) != ceil(Timecode::timecode_to_frames_per_second(tc_format))) { warning << string_compose(_("Session and LTC framerate mismatch: LTC:%1 Session:%2."), Timecode::timecode_format_name(tc_format), Timecode::timecode_format_name(cur_timecode)) << endmsg; - printed_timecode_warning = true; } + printed_timecode_warning = true; } - ltc_timecode = tc_format; - a3e_timecode = cur_timecode; } - return false; + ltc_timecode = tc_format; + a3e_timecode = cur_timecode; + + return fps_changed; } void -LTC_Slave::process_ltc(framepos_t const now) +LTC_Slave::process_ltc(framepos_t const /*now*/) { LTCFrameExt frame; + enum LTC_TV_STANDARD tv_standard = LTC_TV_625_50; while (ltc_decoder_read(decoder, &frame)) { SMPTETimecode stime; @@ -207,9 +313,16 @@ LTC_Slave::process_ltc(framepos_t const now) timecode.subframes = 0; /* set timecode.rate and timecode.drop: */ - if (detect_ltc_fps(stime.frame, (frame.ltc.dfbit)? true : false)) { + bool ltc_is_static = equal_ltc_frame_time(&prev_frame.ltc, &frame.ltc); + + if (detect_discontinuity(&frame, 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)) { reset(); - last_timestamp = 0; + fps_detected=true; } #if 0 // Devel/Debug @@ -231,15 +344,34 @@ LTC_Slave::process_ltc(framepos_t const now) * is expected to start at the end of the current frame */ int fps_i = ceil(timecode.rate); + + switch(fps_i) { + case 30: + if (timecode.drop) { + tv_standard = LTC_TV_525_60; + } else { + tv_standard = LTC_TV_1125_60; + } + break; + case 25: + tv_standard = LTC_TV_625_50; + break; + default: + tv_standard = LTC_TV_FILM_24; /* == LTC_TV_1125_60 == no offset, 24,30fps BGF */ + break; + } + if (!frame.reverse) { - ltc_frame_increment(&frame.ltc, fps_i , 0); + ltc_frame_increment(&frame.ltc, fps_i, tv_standard, 0); ltc_frame_to_time(&stime, &frame.ltc, 0); transport_direction = 1; + frame.off_start -= ltc_frame_alignment(session.frames_per_timecode_frame(), tv_standard); + frame.off_end -= ltc_frame_alignment(session.frames_per_timecode_frame(), tv_standard); } else { - ltc_frame_decrement(&frame.ltc, fps_i , 0); + ltc_frame_decrement(&frame.ltc, fps_i, tv_standard, 0); int off = frame.off_end - frame.off_start; - frame.off_start += off; - frame.off_end += off; + frame.off_start += off - ltc_frame_alignment(session.frames_per_timecode_frame(), tv_standard); + frame.off_end += off - ltc_frame_alignment(session.frames_per_timecode_frame(), tv_standard); transport_direction = -1; } @@ -253,9 +385,11 @@ LTC_Slave::process_ltc(framepos_t const now) Timecode::timecode_to_sample (timecode, ltc_frame, true, false, double(session.frame_rate()), session.config.get_subframes_per_frame(), - session.config.get_timecode_offset_negative(), session.config.get_timecode_offset() + 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) { @@ -288,36 +422,37 @@ LTC_Slave::init_engine_dll (framepos_t pos, int32_t inc) } /* main entry point from session_process.cc - * called from jack_process callback context - * so it is OK to use jack_port_get_buffer() + * called from process callback context + * so it is OK to use get_buffer() */ bool LTC_Slave::speed_and_position (double& speed, framepos_t& pos) { bool engine_init_called = false; - framepos_t now = session.engine().frame_time_at_cycle_start(); + 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().frames_per_cycle(); + framecnt_t nframes = session.engine().samples_per_cycle(); - jack_default_audio_sample_t *in; - jack_latency_range_t ltc_latency; + Sample* in; - boost::shared_ptr ltcport = session.engine().ltc_input_port(); - ltcport->get_connected_latency_range(ltc_latency, false); - in = (jack_default_audio_sample_t*) jack_port_get_buffer (ltcport->jack_port(), nframes); + boost::shared_ptr ltcport = session.ltc_input_port(); + + in = (Sample*) AudioEngine::instance()->port_engine().get_buffer (ltcport->port_handle(), nframes); frameoffset_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_self(), ltc_latency.max, skip)); + DEBUG_TRACE (DEBUG::LTC, string_compose ("speed_and_position - TID:%1 | latency: %2 | skip %3\n", pthread_name(), ltc_slave_latency.max, skip)); if (last_timestamp == 0) { engine_dll_initstate = 0; - delayedlocked++; - } - else if (engine_dll_initstate != transport_direction && ltc_speed != 0) { + if (delayedlocked < 10) ++delayedlocked; + } else if (engine_dll_initstate != transport_direction && ltc_speed != 0) { + + ActiveChanged (true); /* EMIT SIGNAL */ + engine_dll_initstate = transport_direction; init_engine_dll(last_ltc_frame + rint(ltc_speed * double(2 * nframes + now - last_timestamp)), - session.engine().frames_per_cycle()); + session.engine().samples_per_cycle()); engine_init_called = true; } @@ -339,7 +474,7 @@ LTC_Slave::speed_and_position (double& speed, framepos_t& pos) reset(); } - parse_ltc(nframes, in, now + ltc_latency.max ); + parse_ltc(nframes, in, now); process_ltc(now); } @@ -349,7 +484,8 @@ LTC_Slave::speed_and_position (double& speed, framepos_t& pos) pos = session.transport_frame(); return true; } else if (ltc_speed != 0) { - delayedlocked = 0; + if (delayedlocked > 1) delayedlocked--; + else if (current_delta == 0) delayedlocked = 0; } if (abs(now - last_timestamp) > FLYWHEEL_TIMEOUT) { @@ -357,12 +493,13 @@ LTC_Slave::speed_and_position (double& speed, framepos_t& pos) reset(); speed = 0; pos = session.transport_frame(); + ActiveChanged (false); /* EMIT SIGNAL */ return true; } /* it take 2 cycles from naught to rolling. * during these to initial cycles the speed == 0 - * + * * the first cycle: * DEBUG::Slave: slave stopped, move to NNN * DEBUG::Transport: Request forced locate to NNN @@ -397,8 +534,8 @@ LTC_Slave::speed_and_position (double& speed, framepos_t& pos) t0 = t1; t1 += b * e + e2; e2 += c * e; - speed_flt = (t1 - t0) / double(session.engine().frames_per_cycle()); - DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC engine DLL t0:%1 t1:%2 err:%3 spd:%4 ddt:%5\n", t0, t1, e, speed_flt, e2 - session.engine().frames_per_cycle() )); + speed_flt = (t1 - t0) / double(session.engine().samples_per_cycle()); + DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC engine DLL t0:%1 t1:%2 err:%3 spd:%4 ddt:%5\n", t0, t1, e, speed_flt, e2 - session.engine().samples_per_cycle() )); } else { DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC adjusting elapsed (no DLL) from %1 by %2\n", elapsed, (2 * nframes * ltc_speed))); speed_flt = 0; @@ -420,10 +557,15 @@ LTC_Slave::speed_and_position (double& speed, framepos_t& pos) 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)); -#if 1 /* provide a .1% deadzone to lock the speed */ - if (fabs(speed - 1.0) <= 0.001) + /* provide a .1% deadzone to lock the speed */ + if (fabs(speed - 1.0) <= 0.001) { speed = 1.0; -#endif + } + + if (speed != 0 && delayedlocked == 0 && fabs(speed) != 1.0) { + sync_lock_broken = true; + DEBUG_TRACE (DEBUG::LTC, string_compose ("LTC speed not locked %1 %2\n", speed, ltc_speed)); + } return true; } @@ -436,9 +578,9 @@ LTC_Slave::apparent_timecode_format () const else if (timecode.rate == 25 && !timecode.drop) return timecode_25; else if (rint(timecode.rate * 100) == 2997 && !timecode.drop) - return timecode_2997; + return (Config->get_timecode_source_2997() ? timecode_2997000 : timecode_2997); else if (rint(timecode.rate * 100) == 2997 && timecode.drop) - return timecode_2997drop; + 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 else if (timecode.rate == 30 && !timecode.drop) @@ -460,14 +602,15 @@ LTC_Slave::approximate_current_position() const std::string LTC_Slave::approximate_current_delta() const { - char delta[24]; + 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) { - snprintf(delta, sizeof(delta), "flywheel"); + snprintf(delta, sizeof(delta), "%s", _("flywheel")); } else { - snprintf(delta, sizeof(delta), "%s%4" PRIi64 " sm", - PLUSMINUS(-current_delta), abs(current_delta)); + snprintf(delta, sizeof(delta), "\u0394%s%s%lldsm", + sync_lock_broken ? "red" : "green", + LEADINGZERO(::llabs(current_delta)), PLUSMINUS(-current_delta), ::llabs(current_delta)); } return std::string(delta); }