-
/*
Copyright (C) 1999-2002 Paul Davis
#include "midi++/mmc.h"
#include "midi++/port.h"
#include "midi++/manager.h"
+
#include "pbd/error.h"
#include "pbd/pthread_utils.h"
+#include "timecode/time.h"
+
#include "ardour/configuration.h"
#include "ardour/debug.h"
#include "ardour/audioengine.h"
#include "ardour/audio_diskstream.h"
#include "ardour/slave.h"
#include "ardour/cycles.h"
-#include "ardour/timecode.h"
#include "i18n.h"
}
void
-Session::spp_start (Parser &, nframes_t /*timestamp*/)
+Session::spp_start (Parser &, framepos_t /*timestamp*/)
{
if (Config->get_mmc_control() && (!config.get_external_sync() || config.get_sync_source() != JACK)) {
request_transport_speed (1.0);
}
void
-Session::spp_continue (Parser& ignored, nframes_t timestamp)
+Session::spp_continue (Parser& ignored, framepos_t timestamp)
{
spp_start (ignored, timestamp);
}
void
-Session::spp_stop (Parser&, nframes_t /*timestamp*/)
+Session::spp_stop (Parser&, framepos_t /*timestamp*/)
{
if (Config->get_mmc_control()) {
request_stop ();
if (((mtc_timecode_bits >> 5) != MIDI::MTC_25_FPS) && (transmitting_timecode_time.frames % 2)) {
// start MTC quarter frame transmission on an even frame
Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
- outbound_mtc_timecode_frame += (nframes_t) _frames_per_timecode_frame;
+ outbound_mtc_timecode_frame += _frames_per_timecode_frame;
}
// Compensate for audio latency
}
/** Send MTC (quarter-frame) messages for this cycle.
- * Must be called exactly once per cycle from the audio thread. Realtime safe.
+ * Must be called exactly once per cycle from the process thread. Realtime safe.
* This function assumes the state of full Timecode is sane, eg. the slave is
* expecting quarter frame messages and has the right frame of reference (any
* full MTC Timecode time messages that needed to be sent should have been sent
* earlier already this cycle by send_full_time_code)
*/
int
-Session::send_midi_time_code_for_cycle(nframes_t nframes)
+Session::send_midi_time_code_for_cycle (framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
{
if (_slave || !session_send_mtc || transmitting_timecode_time.negative || (next_quarter_frame_to_send < 0)) {
// cerr << "(MTC) Not sending MTC\n";
assert (next_quarter_frame_to_send <= 7);
/* Duration of one quarter frame */
- nframes_t quarter_frame_duration = ((nframes_t) _frames_per_timecode_frame) >> 2;
+ framecnt_t const quarter_frame_duration = ((framecnt_t) _frames_per_timecode_frame) >> 2;
- DEBUG_TRACE (DEBUG::MTC, string_compose ("TF %1 SF %2 NQ %3 FD %4\n", _transport_frame, outbound_mtc_timecode_frame,
+ DEBUG_TRACE (DEBUG::MTC, string_compose ("TF %1 SF %2 NQ %3 FD %4\n", start_frame, outbound_mtc_timecode_frame,
next_quarter_frame_to_send, quarter_frame_duration));
- assert((outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration))
- >= _transport_frame);
-
+ assert ((outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration)) >= _transport_frame);
- // Send quarter frames for this cycle
- while (_transport_frame + nframes > (outbound_mtc_timecode_frame +
- (next_quarter_frame_to_send * quarter_frame_duration))) {
+ /* Send quarter frames for this cycle */
+ while (end_frame > (outbound_mtc_timecode_frame + (next_quarter_frame_to_send * quarter_frame_duration))) {
DEBUG_TRACE (DEBUG::MTC, string_compose ("next frame to send: %1\n", next_quarter_frame_to_send));
switch (next_quarter_frame_to_send) {
case 0:
- mtc_msg[1] = 0x00 | (transmitting_timecode_time.frames & 0xf);
+ mtc_msg[1] = 0x00 | (transmitting_timecode_time.frames & 0xf);
break;
case 1:
- mtc_msg[1] = 0x10 | ((transmitting_timecode_time.frames & 0xf0) >> 4);
+ mtc_msg[1] = 0x10 | ((transmitting_timecode_time.frames & 0xf0) >> 4);
break;
case 2:
- mtc_msg[1] = 0x20 | (transmitting_timecode_time.seconds & 0xf);
+ mtc_msg[1] = 0x20 | (transmitting_timecode_time.seconds & 0xf);
break;
case 3:
- mtc_msg[1] = 0x30 | ((transmitting_timecode_time.seconds & 0xf0) >> 4);
+ mtc_msg[1] = 0x30 | ((transmitting_timecode_time.seconds & 0xf0) >> 4);
break;
case 4:
- mtc_msg[1] = 0x40 | (transmitting_timecode_time.minutes & 0xf);
+ mtc_msg[1] = 0x40 | (transmitting_timecode_time.minutes & 0xf);
break;
case 5:
mtc_msg[1] = 0x50 | ((transmitting_timecode_time.minutes & 0xf0) >> 4);
break;
case 6:
- mtc_msg[1] = 0x60 | ((mtc_timecode_bits|transmitting_timecode_time.hours) & 0xf);
+ mtc_msg[1] = 0x60 | ((mtc_timecode_bits | transmitting_timecode_time.hours) & 0xf);
break;
case 7:
- mtc_msg[1] = 0x70 | (((mtc_timecode_bits|transmitting_timecode_time.hours) & 0xf0) >> 4);
+ mtc_msg[1] = 0x70 | (((mtc_timecode_bits | transmitting_timecode_time.hours) & 0xf0) >> 4);
break;
}
- const nframes_t msg_time = (outbound_mtc_timecode_frame
- + (quarter_frame_duration * next_quarter_frame_to_send));
+ const framepos_t msg_time = outbound_mtc_timecode_frame + (quarter_frame_duration * next_quarter_frame_to_send);
+ cout << " " << msg_time << "\n";
// This message must fall within this block or something is broken
- assert(msg_time >= _transport_frame);
- assert(msg_time < _transport_frame + nframes);
+ assert (msg_time >= start_frame);
+ assert (msg_time < end_frame);
- nframes_t out_stamp = msg_time - _transport_frame;
- assert(out_stamp < nframes);
+ /* convert from session frames back to JACK frames using the transport speed */
+ pframes_t const out_stamp = (msg_time - start_frame) / _transport_speed;
+ assert (out_stamp < nframes);
if (MIDI::Manager::instance()->mtc_output_port()->midimsg (mtc_msg, 2, out_stamp)) {
error << string_compose(_("Session: cannot send quarter-frame MTC message (%1)"), strerror (errno))
// Wrap quarter frame counter
next_quarter_frame_to_send = 0;
// Increment timecode time twice
- Timecode::increment( transmitting_timecode_time, config.get_subframes_per_frame() );
- Timecode::increment( transmitting_timecode_time, config.get_subframes_per_frame() );
+ Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
+ Timecode::increment (transmitting_timecode_time, config.get_subframes_per_frame());
// Re-calculate timing of first quarter frame
//timecode_to_sample( transmitting_timecode_time, outbound_mtc_timecode_frame, true /* use_offset */, false );
outbound_mtc_timecode_frame += 8 * quarter_frame_duration;
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