/*
- * Copyright (C) 2009-2018 Paul Davis
- * Copyright (C) 2019 Robin Gareus <robin@gareus.org>
+ * Copyright (C) 2017-2018 Paul Davis <paul@linuxaudiosystems.com>
+ * Copyright (C) 2017-2019 Robin Gareus <robin@gareus.org>
*
- * 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 the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
+ * 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
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <boost/smart_ptr/scoped_array.hpp>
#include "pbd/memento_command.h"
#include "pbd/playback_buffer.h"
+#include "ardour/amp.h"
#include "ardour/audioengine.h"
#include "ardour/audioplaylist.h"
#include "ardour/audio_buffer.h"
Sample* DiskReader::_mixdown_buffer = 0;
gain_t* DiskReader::_gain_buffer = 0;
samplecnt_t DiskReader::midi_readahead = 4096;
-bool DiskReader::_no_disk_output = false;
+gint DiskReader::_no_disk_output (0);
DiskReader::DiskReader (Session& s, string const & str, DiskIOProcessor::Flag f)
: DiskIOProcessor (s, str, f)
, overwrite_sample (0)
- , _pending_overwrite (false)
, overwrite_queued (false)
- , _declick_gain (0)
+ , _declick_amp (s.nominal_sample_rate ())
+ , _declick_offs (0)
{
file_sample[DataType::AUDIO] = 0;
file_sample[DataType::MIDI] = 0;
+ g_atomic_int_set (&_pending_overwrite, 0);
}
DiskReader::~DiskReader ()
{
DEBUG_TRACE (DEBUG::Destruction, string_compose ("DiskReader %1 @ %2 deleted\n", _name, this));
-
- for (uint32_t n = 0; n < DataType::num_types; ++n) {
- if (_playlists[n]) {
- _playlists[n]->release ();
- }
- }
}
void
DiskReader::ReaderChannelInfo::resize (samplecnt_t bufsize)
{
delete rbuf;
- /* touch memory to lock it */
rbuf = new PlaybackBuffer<Sample> (bufsize);
+ /* touch memory to lock it */
memset (rbuf->buffer(), 0, sizeof (Sample) * rbuf->bufsize());
}
}
}
- if ((speed == 0.0) && (ms == MonitoringDisk)) {
+ const bool declick_out = _session.declick_in_progress();
+ const gain_t target_gain = (declick_out || (speed == 0.0) || ((ms & MonitoringDisk) == 0)) ? 0.0 : 1.0;
+
+ if (!_session.cfg ()->get_use_transport_fades ()) {
+ _declick_amp.set_gain (target_gain);
+ }
+
+ if (declick_out && (ms == MonitoringDisk) && _declick_amp.gain () == target_gain) {
/* no channels, or stopped. Don't accidentally pass any data
* from disk into our outputs (e.g. via interpolation)
*/
}
BufferSet& scratch_bufs (_session.get_scratch_buffers (bufs.count()));
- const bool still_locating = _session.global_locate_pending();
+ const bool still_locating = _session.global_locate_pending() || pending_overwrite ();
+
+ assert (speed == -1 || speed == 0 || speed == 1);
+
+ if (speed == 0) {
+ disk_samples_to_consume = 0;
+ } else {
+ disk_samples_to_consume = nframes;
+ }
if (c->empty()) {
/* do nothing with audio */
goto midi;
}
- assert (speed == -1 || speed == 0 || speed == 1);
-
- if (speed < 0) {
- disk_samples_to_consume = -nframes;
- } else if (speed > 0) {
- disk_samples_to_consume = nframes;
+ if (_declick_amp.gain () != target_gain && target_gain == 0) {
+ /* fade-out */
+#if 0
+ printf ("DR fade-out speed=%.1f gain=%.3f off=%ld start=%ld playpos=%ld (%s)\n",
+ speed, _declick_amp.gain (), _declick_offs, start_sample, playback_sample, owner()->name().c_str());
+#endif
+ ms = MonitorState (ms | MonitoringDisk);
+ assert (result_required);
+ result_required = true;
} else {
- disk_samples_to_consume = 0;
+ _declick_offs = 0;
}
if (!result_required || ((ms & MonitoringDisk) == 0) || still_locating || _no_disk_output) {
gain_t scaling;
if (n_chans > n_buffers) {
- scaling = ((float) n_buffers)/n_chans;
+ scaling = ((float) n_buffers) / n_chans;
} else {
scaling = 1.0;
}
for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
ChannelInfo* chaninfo (*chan);
- AudioBuffer& output (bufs.get_audio (n%n_buffers));
- Sample* disk_signal = 0; /* assignment not really needed but it keeps the compiler quiet and helps track bugs */
-
- if (ms & MonitoringInput) {
- /* put disk stream in scratch buffer, blend at end */
- disk_signal = scratch_bufs.get_audio(n).data ();
- } else {
- /* no input stream needed, just overwrite buffers */
- disk_signal = output.data ();
- }
-
- if (speed > 0) {
- if (start_sample < playback_sample) {
- cerr << owner()->name() << " SS = " << start_sample << " PS = " << playback_sample << endl;
- abort ();
- }
- } else if (speed < 0) {
- if (playback_sample < start_sample) {
- cerr << owner()->name() << " SS = " << start_sample << " PS = " << playback_sample << " REVERSE" << endl;
- abort ();
- }
- }
+ AudioBuffer& output (bufs.get_audio (n % n_buffers));
- if ((speed > 0) && (start_sample != playback_sample)) {
- stringstream str;
- str << owner()->name() << " playback @ " << start_sample << " not aligned with " << playback_sample << " jump ahead " << (start_sample - playback_sample) << endl;
- cerr << str.str();
+ AudioBuffer& disk_buf ((ms & MonitoringInput) ? scratch_bufs.get_audio(n) : output);
+ if (start_sample != playback_sample && target_gain != 0) {
if (can_internal_playback_seek (start_sample - playback_sample)) {
internal_playback_seek (start_sample - playback_sample);
} else {
- cerr << owner()->name() << " playback not possible: ss = " << start_sample << " ps = " << playback_sample << endl;
- goto midi;
+ disk_samples_to_consume = 0; /* will force an underrun below */
}
}
- if (speed != 0.0) {
- assert (disk_signal);
- const samplecnt_t total = chaninfo->rbuf->read (disk_signal, disk_samples_to_consume);
+ if (!declick_out) {
+ const samplecnt_t total = chaninfo->rbuf->read (disk_buf.data(), disk_samples_to_consume);
if (disk_samples_to_consume > total) {
- cerr << _name << " Need " << disk_samples_to_consume << " total = " << total << endl;
+ cerr << _name << " Need " << total << " have only " << disk_samples_to_consume << endl;
cerr << "underrun for " << _name << endl;
DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 underrun in %2, total space = %3\n",
DEBUG_THREAD_SELF, name(), total));
Underrun ();
return;
}
+ } else if (_declick_amp.gain () != target_gain) {
+ assert (target_gain == 0);
+ const samplecnt_t total = chaninfo->rbuf->read (disk_buf.data(), nframes, false, _declick_offs);
+ _declick_offs += total;
}
- if (scaling != 1.0f && speed != 0.0) {
- apply_gain_to_buffer (disk_signal, disk_samples_to_consume, scaling);
- }
+ _declick_amp.apply_gain (disk_buf, nframes, target_gain);
- //chaninfo->rbuf->increment_read_ptr (disk_samples_to_consume);
+ Amp::apply_simple_gain (disk_buf, nframes, scaling);
if (ms & MonitoringInput) {
/* mix the disk signal into the input signal (already in bufs) */
- mix_buffers_no_gain (output.data(), disk_signal, disk_samples_to_consume);
+ mix_buffers_no_gain (output.data(), disk_buf.data(), nframes);
}
}
}
/* MIDI data handling */
midi:
- if (/*!_session.declick_out_pending() && */ bufs.count().n_midi() && _midi_buf) {
+ if (!declick_in_progress() && bufs.count().n_midi() && _midi_buf) {
MidiBuffer* dst;
if (_no_disk_output) {
playback_sample += disk_samples_to_consume;
}
+ Location* loc = _loop_location;
+ if (loc) {
+ Evoral::Range<samplepos_t> loop_range (loc->start(), loc->end() - 1);
+ playback_sample = loop_range.squish (playback_sample);
+ }
+
if (_playlists[DataType::AUDIO]) {
if (!c->empty()) {
if (_slaved) {
// DEBUG_TRACE (DEBUG::Butler, string_compose ("%1 reader run, needs butler = %2\n", name(), _need_butler));
}
+bool
+DiskReader::declick_in_progress () const
+{
+ return _declick_amp.gain() != 0; // declick-out
+}
+
+bool
+DiskReader::pending_overwrite () const {
+ return g_atomic_int_get (&_pending_overwrite) != 0;
+}
+
void
-DiskReader::set_pending_overwrite (bool yn)
+DiskReader::set_pending_overwrite ()
{
/* called from audio thread, so we can use the read ptr and playback sample as we wish */
- _pending_overwrite = yn;
-
+ assert (!pending_overwrite ());
overwrite_sample = playback_sample;
boost::shared_ptr<ChannelList> c = channels.reader ();
for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan) {
(*chan)->rbuf->read_flush ();
}
+ g_atomic_int_set (&_pending_overwrite, 1);
}
-int
+bool
DiskReader::overwrite_existing_buffers ()
{
- int ret = -1;
-
- boost::shared_ptr<ChannelList> c = channels.reader();
-
+ /* called from butler thread */
+ assert (pending_overwrite ());
overwrite_queued = false;
DEBUG_TRACE (DEBUG::DiskIO, string_compose ("%1 overwriting existing buffers at %2\n", overwrite_sample));
+ boost::shared_ptr<ChannelList> c = channels.reader();
if (!c->empty ()) {
/* AUDIO */
/* assume all are the same size */
samplecnt_t size = c->front()->rbuf->write_space ();
+ assert (size > 0);
boost::scoped_array<Sample> sum_buffer (new Sample[size]);
boost::scoped_array<Sample> mixdown_buffer (new Sample[size]);
samplepos_t start = overwrite_sample;
samplecnt_t to_read = size;
- cerr << owner()->name() << " over-read: " << to_read << endl;
if (audio_read ((*chan)->rbuf, sum_buffer.get(), mixdown_buffer.get(), gain_buffer.get(), start, to_read, n, reversed)) {
error << string_compose(_("DiskReader %1: when refilling, cannot read %2 from playlist at sample %3"), id(), size, overwrite_sample) << endmsg;
goto midi;
}
}
-
- ret = 0;
}
midi:
file_sample[DataType::MIDI] = overwrite_sample; // overwrite_sample was adjusted by ::midi_read() to the new position
}
- _pending_overwrite = false;
+ g_atomic_int_set (&_pending_overwrite, 0);
- return ret;
+ return true;
}
int
DiskReader::seek (samplepos_t sample, bool complete_refill)
{
+ /* called via non_realtime_locate() from butler thread */
+
uint32_t n;
int ret = -1;
ChannelList::iterator chan;
boost::shared_ptr<ChannelList> c = channels.reader();
- //sample = std::max ((samplecnt_t)0, sample -_session.worst_output_latency ());
+#ifndef NDEBUG
+ if (_declick_amp.gain() != 0) {
+ /* this should not happen. new transport should postponse seeking
+ * until de-click is complete */
+ printf ("LOCATE WITHOUT DECLICK (gain=%f) at %ld seek-to %ld\n", _declick_amp.gain (), playback_sample, sample);
+ //return -1;
+ }
+ if (sample == playback_sample && !complete_refill) {
+ return 0; // XXX double-check this
+ }
+#endif
+
+ g_atomic_int_set (&_pending_overwrite, 0);
+
+ DEBUG_TRACE (DEBUG::DiskIO, string_compose ("DiskReader::seek %s %ld -> %ld refill=%d\n", owner()->name().c_str(), playback_sample, sample, complete_refill));
+
+ const samplecnt_t distance = sample - playback_sample;
+ if (can_internal_playback_seek (distance)) {
+ internal_playback_seek (distance);
+ return 0;
+ }
for (n = 0, chan = c->begin(); chan != c->end(); ++chan, ++n) {
(*chan)->rbuf->reset ();
ret = do_refill_with_alloc (true);
}
-
return ret;
}
-int
-DiskReader::can_internal_playback_seek (samplecnt_t distance)
+bool
+DiskReader::can_internal_playback_seek (sampleoffset_t distance)
{
/* 1. Audio */
boost::shared_ptr<ChannelList> c = channels.reader();
for (chan = c->begin(); chan != c->end(); ++chan) {
- if ((*chan)->rbuf->read_space() < (size_t) distance) {
+ if (!(*chan)->rbuf->can_seek (distance)) {
return false;
}
}
+ if (distance < 0) {
+ return true; // XXX TODO un-seek MIDI
+ }
+
/* 2. MIDI */
uint32_t samples_read = g_atomic_int_get(&_samples_read_from_ringbuffer);
return ((samples_written - samples_read) < distance);
}
-int
-DiskReader::internal_playback_seek (samplecnt_t distance)
+void
+DiskReader::internal_playback_seek (sampleoffset_t distance)
{
+ if (distance == 0) {
+ return;
+ }
+
+ sampleoffset_t off = distance;
+
ChannelList::iterator chan;
boost::shared_ptr<ChannelList> c = channels.reader();
-
for (chan = c->begin(); chan != c->end(); ++chan) {
- (*chan)->rbuf->increment_read_ptr (::llabs(distance));
+ if (distance < 0) {
+ off = 0 - (sampleoffset_t) (*chan)->rbuf->decrement_read_ptr (::llabs (distance));
+ } else {
+ off = (*chan)->rbuf->increment_read_ptr (distance);
+ }
}
- playback_sample += distance;
-
- return 0;
+ playback_sample += off;
}
static
Location *loc = 0;
if (!_playlists[DataType::AUDIO]) {
- // TODO optimize use zero-buffer
- for (uint32_t z = 0; z < cnt; ++z) {
- Sample t = 0;
- rb->write (&t, 1);
- }
+ rb->write_zero (cnt);
return 0;
}
/* at start: nothing to do but fill with silence */
for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
ChannelInfo* chan (*i);
- // TODO optimize use zero-buffer
- samplecnt_t ws = chan->rbuf->write_space ();
- for (uint32_t z = 0; z < ws; ++z) {
- Sample t = 0;
- chan->rbuf->write (&t, 1);
- }
+ chan->rbuf->write_zero (chan->rbuf->write_space ());
}
return 0;
}
/* at end: nothing to do but fill with silence */
for (chan_n = 0, i = c->begin(); i != c->end(); ++i, ++chan_n) {
ChannelInfo* chan (*i);
- // TODO optimize use zero-buffer
- samplecnt_t ws = chan->rbuf->write_space ();
- for (uint32_t z = 0; z < ws; ++z) {
- Sample t = 0;
- chan->rbuf->write (&t, 1);
- }
+ chan->rbuf->write_zero (chan->rbuf->write_space ());
}
return 0;
}
to_read = min (to_read, samples_to_read);
assert (to_read >= 0);
- cerr << owner()->name() << " to-read: " << to_read << endl;
+ // cerr << owner()->name() << " to-read: " << to_read << endl;
if (to_read) {
if (audio_read (chan->rbuf, sum_buffer, mixdown_buffer, gain_buffer, file_sample_tmp, to_read, chan_n, reversed)) {
}
if (zero_fill) {
- /* XXX: do something */
+ /* not sure if action is needed,
+ * we'll later hit the "to close to the end" case
+ */
+ //chan->rbuf->write_zero (zero_fill);
}
}
DiskReader::get_midi_playback (MidiBuffer& dst, samplepos_t start_sample, samplepos_t end_sample, MonitorState ms, BufferSet& scratch_bufs, double speed, samplecnt_t disk_samples_to_consume)
{
MidiBuffer* target;
- samplepos_t nframes = end_sample - start_sample;
+ samplepos_t nframes = ::llabs (end_sample - start_sample);
assert (_midi_buf);
Location* loc = _loop_location;
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose (
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose (
"%1 MDS pre-read read %8 offset = %9 @ %4..%5 from %2 write to %3, LOOPED ? %6 .. %7\n", _name,
_midi_buf->get_read_ptr(), _midi_buf->get_write_ptr(), start_sample, end_sample,
(loc ? loc->start() : -1), (loc ? loc->end() : -1), nframes, Port::port_offset()));
Evoral::Range<samplepos_t> loop_range (loc->start(), loc->end() - 1);
effective_start = loop_range.squish (start_sample);
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("looped, effective start adjusted to %1\n", effective_start));
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("looped, effective start adjusted to %1\n", effective_start));
if (effective_start == loc->start()) {
/* We need to turn off notes that may extend
first = loc->end() - effective_start;
second = nframes - first;
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("loop read for eff %1 end %2: %3 and %4, cycle offset %5\n",
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("loop read for eff %1 end %2: %3 and %4, cycle offset %5\n",
effective_start, loc->end(), first, second));
if (first) {
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("loop read #1, from %1 for %2\n",
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("loop read #1, from %1 for %2\n",
effective_start, first));
events_read = _midi_buf->read (*target, effective_start, first);
}
if (second) {
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("loop read #2, from %1 for %2\n",
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("loop read #2, from %1 for %2\n",
loc->start(), second));
events_read += _midi_buf->read (*target, loc->start(), second);
}
} else {
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("loop read #3, adjusted start as %1 for %2\n",
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("loop read #3, adjusted start as %1 for %2\n",
effective_start, nframes));
events_read = _midi_buf->read (*target, effective_start, effective_start + nframes);
}
if (n_skipped > 0) {
warning << string_compose(_("MidiDiskstream %1: skipped %2 events, possible underflow"), id(), n_skipped) << endmsg;
}
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("playback buffer read, from %1 to %2 (%3)", start_sample, end_sample, nframes));
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("playback buffer read, from %1 to %2 (%3)", start_sample, end_sample, nframes));
events_read = _midi_buf->read (*target, start_sample, end_sample, Port::port_offset ());
}
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose (
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose (
"%1 MDS events read %2 range %3 .. %4 rspace %5 wspace %6 r@%7 w@%8\n",
_name, events_read, playback_sample, playback_sample + nframes,
_midi_buf->read_space(), _midi_buf->write_space(),
g_atomic_int_add (&_samples_read_from_ringbuffer, nframes);
- /* vari-speed */
- if (speed != 0.0 && fabsf (speed) != 1.0f) {
- for (MidiBuffer::iterator i = target->begin(); i != target->end(); ++i) {
- MidiBuffer::TimeType *tme = i.timeptr();
- // XXX need to subtract port offsets before scaling
- // also we must only scale events read from disk
- // and not existing input data in the buffer.
- *tme = (*tme) * nframes / disk_samples_to_consume;
- }
- }
-
- if (ms & MonitoringInput) {
+ if (!_no_disk_output && (ms & MonitoringInput)) {
dst.merge_from (*target, nframes);
}
assert(_midi_buf);
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MDS::midi_read @ %1 cnt %2\n", start, dur));
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("MDS::midi_read @ %1 cnt %2\n", start, dur));
boost::shared_ptr<MidiTrack> mt = boost::dynamic_pointer_cast<MidiTrack>(_route);
MidiChannelFilter* filter = mt ? &mt->playback_filter() : 0;
this_read = min (dur,this_read);
- DEBUG_TRACE (DEBUG::MidiDiskstreamIO, string_compose ("MDS ::read at %1 for %2 loffset %3\n", effective_start, this_read, loop_offset));
+ DEBUG_TRACE (DEBUG::MidiDiskIO, string_compose ("MDS ::read at %1 for %2 loffset %3\n", effective_start, this_read, loop_offset));
if (midi_playlist()->read (*_midi_buf, effective_start, this_read, loop_range, 0, filter) != this_read) {
error << string_compose(
}
void
-DiskReader::set_no_disk_output (bool yn)
+DiskReader::dec_no_disk_output ()
{
- /* this MUST be called as part of the process call tree, before any
- disk readers are invoked. We use it when the session needs the
- transport (and thus effective read position for DiskReaders) to keep
- advancing as part of syncing up with a transport master, but we
- don't want any actual disk output yet because we are still not
- synced.
+ /* this is called unconditionally when things happen that ought to end
+ a period of "no disk output". It's OK for that to happen when there
+ was no corresponding call to ::inc_no_disk_output(), but we must
+ stop the value from becoming negative.
*/
- _no_disk_output = yn;
+
+ do {
+ gint v = g_atomic_int_get (&_no_disk_output);
+ if (v > 0) {
+ if (g_atomic_int_compare_and_exchange (&_no_disk_output, v, v - 1)) {
+ break;
+ }
+ } else {
+ break;
+ }
+ } while (true);
+}
+
+DiskReader::DeclickAmp::DeclickAmp (samplecnt_t sample_rate)
+{
+ _a = 4550.f / (gain_t)sample_rate;
+ _l = -log1p (_a);
+ _g = 0;
+}
+
+void
+DiskReader::DeclickAmp::apply_gain (AudioBuffer& buf, samplecnt_t n_samples, const float target)
+{
+ if (n_samples == 0) {
+ return;
+ }
+ float g = _g;
+
+ if (g == target) {
+ Amp::apply_simple_gain (buf, n_samples, target, 0);
+ return;
+ }
+
+ const float a = _a;
+ Sample* const buffer = buf.data ();
+
+ const int max_nproc = 16;
+ uint32_t remain = n_samples;
+ uint32_t offset = 0;
+ while (remain > 0) {
+ uint32_t n_proc = remain > max_nproc ? max_nproc : remain;
+ for (uint32_t i = 0; i < n_proc; ++i) {
+ buffer[offset + i] *= g;
+ }
+#if 1
+ g += a * (target - g);
+#else /* accurate exponential fade */
+ if (n_proc == max_nproc) {
+ g += a * (target - g);
+ } else {
+ g = target - (target - g) * expf (_l * n_proc / max_nproc);
+ }
+#endif
+ remain -= n_proc;
+ offset += n_proc;
+ }
+
+ if (fabsf (g - target) < /* GAIN_COEFF_DELTA */ 1e-5) {
+ _g = target;
+ } else {
+ _g = g;
+ }
}
projects / ardour.git / blobdiff