ardour/livetrax
13
0
Fork 0
Code
e84c3fe555
livetrax/libs/ardour/audioregion.cc
Carl Hetherington 48d5e569af Tidy formatting. 
git-svn-id: svn://localhost/ardour2/branches/3.0@7787 d708f5d6-7413-0410-9779-e7cbd77b26cf
2010-09-16 17:01:19 +00:00

1563 lines
40 KiB
C++
Raw Blame History

/*
Copyright (C) 2000-2006 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <cmath>
#include <climits>
#include <cfloat>
#include <algorithm>
#include <set>
#include <glibmm/thread.h>
#include "pbd/basename.h"
#include "pbd/xml++.h"
#include "pbd/stacktrace.h"
#include "pbd/enumwriter.h"
#include "pbd/convert.h"
#include "evoral/Curve.hpp"
#include "ardour/audioregion.h"
#include "ardour/debug.h"
#include "ardour/session.h"
#include "ardour/gain.h"
#include "ardour/dB.h"
#include "ardour/playlist.h"
#include "ardour/audiofilesource.h"
#include "ardour/region_factory.h"
#include "ardour/runtime_functions.h"
#include "ardour/transient_detector.h"
#include "i18n.h"
#include <locale.h>
using namespace std;
using namespace ARDOUR;
using namespace PBD;
namespace ARDOUR {
namespace Properties {
PBD::PropertyDescriptor<bool> envelope_active;
PBD::PropertyDescriptor<bool> default_fade_in;
PBD::PropertyDescriptor<bool> default_fade_out;
PBD::PropertyDescriptor<bool> fade_in_active;
PBD::PropertyDescriptor<bool> fade_out_active;
PBD::PropertyDescriptor<float> scale_amplitude;
}
}
void
AudioRegion::make_property_quarks ()
{
Properties::envelope_active.property_id = g_quark_from_static_string (X_("envelope-active"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for envelope-active = %1\n", Properties::envelope_active.property_id));
Properties::default_fade_in.property_id = g_quark_from_static_string (X_("default-fade-in"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-in = %1\n", Properties::default_fade_in.property_id));
Properties::default_fade_out.property_id = g_quark_from_static_string (X_("default-fade-out"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for default-fade-out = %1\n", Properties::default_fade_out.property_id));
Properties::fade_in_active.property_id = g_quark_from_static_string (X_("fade-in-active"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-in-active = %1\n", Properties::fade_in_active.property_id));
Properties::fade_out_active.property_id = g_quark_from_static_string (X_("fade-out-active"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for fade-out-active = %1\n", Properties::fade_out_active.property_id));
Properties::scale_amplitude.property_id = g_quark_from_static_string (X_("scale-amplitude"));
DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for scale-amplitude = %1\n", Properties::scale_amplitude.property_id));
}
void
AudioRegion::register_properties ()
{
/* no need to register parent class properties */
add_property (_envelope_active);
add_property (_default_fade_in);
add_property (_default_fade_out);
add_property (_fade_in_active);
add_property (_fade_out_active);
add_property (_scale_amplitude);
}
#define AUDIOREGION_STATE_DEFAULT \
_envelope_active (Properties::envelope_active, false) \
, _default_fade_in (Properties::default_fade_in, true) \
, _default_fade_out (Properties::default_fade_out, true) \
, _fade_in_active (Properties::fade_in_active, true) \
, _fade_out_active (Properties::fade_out_active, true) \
, _scale_amplitude (Properties::scale_amplitude, 1.0)
#define AUDIOREGION_COPY_STATE(other) \
_envelope_active (Properties::envelope_active, other->_envelope_active) \
, _default_fade_in (Properties::default_fade_in, other->_default_fade_in) \
, _default_fade_out (Properties::default_fade_out, other->_default_fade_out) \
, _fade_in_active (Properties::fade_in_active, other->_fade_in_active) \
, _fade_out_active (Properties::fade_out_active, other->_fade_out_active) \
, _scale_amplitude (Properties::scale_amplitude, other->_scale_amplitude)
/* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
void
AudioRegion::init ()
{
register_properties ();
set_default_fades ();
set_default_envelope ();
listen_to_my_curves ();
connect_to_analysis_changed ();
connect_to_header_position_offset_changed ();
}
/** Constructor for use by derived types only */
AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
: Region (s, start, len, name, DataType::AUDIO)
, AUDIOREGION_STATE_DEFAULT
, _automatable (s)
, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
init ();
assert (_sources.size() == _master_sources.size());
}
/** Basic AudioRegion constructor */
AudioRegion::AudioRegion (const SourceList& srcs)
: Region (srcs)
, AUDIOREGION_STATE_DEFAULT
, _automatable(srcs[0]->session())
, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
init ();
assert (_sources.size() == _master_sources.size());
}
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes64_t offset, bool offset_relative)
: Region (other, offset, offset_relative)
, AUDIOREGION_COPY_STATE (other)
, _automatable (other->session())
, _fade_in (new AutomationList (*other->_fade_in))
, _fade_out (new AutomationList (*other->_fade_out))
/* As far as I can see, the _envelope's times are relative to region position, and have nothing
to do with sources (and hence _start). So when we copy the envelope, we just use the supplied offset.
*/
, _envelope (new AutomationList (*other->_envelope, offset, other->_length))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
/* don't use init here, because we got fade in/out from the other region
*/
register_properties ();
listen_to_my_curves ();
connect_to_analysis_changed ();
connect_to_header_position_offset_changed ();
assert(_type == DataType::AUDIO);
assert (_sources.size() == _master_sources.size());
}
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
: Region (boost::static_pointer_cast<const Region>(other), srcs)
, AUDIOREGION_COPY_STATE (other)
, _automatable (other->session())
, _fade_in (new AutomationList (*other->_fade_in))
, _fade_out (new AutomationList (*other->_fade_out))
, _envelope (new AutomationList (*other->_envelope))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
/* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
register_properties ();
listen_to_my_curves ();
connect_to_analysis_changed ();
connect_to_header_position_offset_changed ();
assert (_sources.size() == _master_sources.size());
}
AudioRegion::AudioRegion (SourceList& srcs)
: Region (srcs)
, AUDIOREGION_STATE_DEFAULT
, _automatable(srcs[0]->session())
, _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
, _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
, _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
init ();
assert(_type == DataType::AUDIO);
assert (_sources.size() == _master_sources.size());
}
AudioRegion::~AudioRegion ()
{
}
void
AudioRegion::post_set ()
{
if (!_sync_marked) {
_sync_position = _start;
}
/* return to default fades if the existing ones are too long */
if (_left_of_split) {
if (_fade_in->back()->when >= _length) {
set_default_fade_in ();
}
set_default_fade_out ();
_left_of_split = false;
}
if (_right_of_split) {
if (_fade_out->back()->when >= _length) {
set_default_fade_out ();
}
set_default_fade_in ();
_right_of_split = false;
}
/* If _length changed, adjust our gain envelope accordingly */
_envelope->truncate_end (_length);
}
void
AudioRegion::connect_to_analysis_changed ()
{
for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
(*i)->AnalysisChanged.connect_same_thread (*this, boost::bind (&AudioRegion::invalidate_transients, this));
}
}
void
AudioRegion::connect_to_header_position_offset_changed ()
{
set<boost::shared_ptr<Source> > unique_srcs;
for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
/* connect only once to HeaderPositionOffsetChanged, even if sources are replicated
*/
if (unique_srcs.find (*i) == unique_srcs.end ()) {
unique_srcs.insert (*i);
boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i);
if (afs) {
afs->HeaderPositionOffsetChanged.connect_same_thread (*this, boost::bind (&AudioRegion::source_offset_changed, this));
}
}
}
}
void
AudioRegion::listen_to_my_curves ()
{
_envelope->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::envelope_changed, this));
_fade_in->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_in_changed, this));
_fade_out->StateChanged.connect_same_thread (*this, boost::bind (&AudioRegion::fade_out_changed, this));
}
void
AudioRegion::set_envelope_active (bool yn)
{
if (envelope_active() != yn) {
_envelope_active = yn;
send_change (PropertyChange (Properties::envelope_active));
}
}
ARDOUR::nframes_t
AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const
{
if (chan_n >= _sources.size()) {
return 0;
}
if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
return 0;
} else {
if (_scale_amplitude != 1.0f) {
for (nframes_t n = 0; n < npeaks; ++n) {
buf[n].max *= _scale_amplitude;
buf[n].min *= _scale_amplitude;
}
}
return cnt;
}
}
framecnt_t
AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
{
/* raw read, no fades, no gain, nada */
return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, 0, 0, ReadOps (0));
}
framecnt_t
AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
framepos_t file_position, framecnt_t cnt, uint32_t chan_n,
framecnt_t read_frames, framecnt_t skip_frames) const
{
/* regular diskstream/butler read complete with fades etc */
return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
file_position, cnt, chan_n, read_frames, skip_frames, ReadOps (~0));
}
framecnt_t
AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
framepos_t position, framecnt_t cnt, uint32_t chan_n) const
{
/* do not read gain/scaling/fades and do not count this disk i/o in statistics */
return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0, ReadOps (0));
}
framecnt_t
AudioRegion::_read_at (const SourceList& /*srcs*/, framecnt_t limit,
Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
framepos_t position,
framecnt_t cnt,
uint32_t chan_n,
framecnt_t /*read_frames*/,
framecnt_t /*skip_frames*/,
ReadOps rops) const
{
frameoffset_t internal_offset;
frameoffset_t buf_offset;
framecnt_t to_read;
bool raw = (rops == ReadOpsNone);
if (n_channels() == 0) {
return 0;
}
if (muted() && !raw) {
return 0; /* read nothing */
}
/* precondition: caller has verified that we cover the desired section */
if (position < _position) {
internal_offset = 0;
buf_offset = _position - position;
cnt -= buf_offset;
} else {
internal_offset = position - _position;
buf_offset = 0;
}
if (internal_offset >= limit) {
return 0; /* read nothing */
}
if ((to_read = min (cnt, limit - internal_offset)) == 0) {
return 0; /* read nothing */
}
if (opaque() || raw) {
/* overwrite whatever is there */
mixdown_buffer = buf + buf_offset;
} else {
mixdown_buffer += buf_offset;
}
if (rops & ReadOpsCount) {
_read_data_count = 0;
}
if (chan_n < n_channels()) {
boost::shared_ptr<AudioSource> src = audio_source(chan_n);
if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
return 0; /* "read nothing" */
}
if (rops & ReadOpsCount) {
_read_data_count += src->read_data_count();
}
} else {
/* track is N-channel, this region has less channels; silence the ones
we don't have.
*/
if (Config->get_replicate_missing_region_channels()) {
/* track is N-channel, this region has less channels, so use a relevant channel
*/
uint32_t channel = n_channels() % chan_n;
boost::shared_ptr<AudioSource> src = audio_source (channel);
if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
return 0; /* "read nothing" */
}
/* adjust read data count appropriately since this was a duplicate read */
src->dec_read_data_count (to_read);
} else {
memset (mixdown_buffer, 0, sizeof (Sample) * cnt);
}
}
if (rops & ReadOpsFades) {
/* fade in */
if (_fade_in_active && _session.config.get_use_region_fades()) {
nframes_t fade_in_length = (nframes_t) _fade_in->back()->when;
/* see if this read is within the fade in */
if (internal_offset < fade_in_length) {
nframes_t fi_limit;
fi_limit = min (to_read, fade_in_length - internal_offset);
_fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit);
for (nframes_t n = 0; n < fi_limit; ++n) {
mixdown_buffer[n] *= gain_buffer[n];
}
}
}
/* fade out */
if (_fade_out_active && _session.config.get_use_region_fades()) {
/* see if some part of this read is within the fade out */
/* ................. >| REGION
limit
{ } FADE
fade_out_length
^
limit - fade_out_length
|--------------|
^internal_offset
^internal_offset + to_read
we need the intersection of [internal_offset,internal_offset+to_read] with
[limit - fade_out_length, limit]
*/
nframes_t fade_out_length = (nframes_t) _fade_out->back()->when;
nframes_t fade_interval_start = max(internal_offset, limit-fade_out_length);
nframes_t fade_interval_end = min(internal_offset + to_read, limit);
if (fade_interval_end > fade_interval_start) {
/* (part of the) the fade out is in this buffer */
nframes_t fo_limit = fade_interval_end - fade_interval_start;
nframes_t curve_offset = fade_interval_start - (limit-fade_out_length);
nframes_t fade_offset = fade_interval_start - internal_offset;
_fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit);
for (nframes_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) {
mixdown_buffer[m] *= gain_buffer[n];
}
}
}
}
/* Regular gain curves and scaling */
if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
_envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
for (nframes_t n = 0; n < to_read; ++n) {
mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
}
} else {
for (nframes_t n = 0; n < to_read; ++n) {
mixdown_buffer[n] *= gain_buffer[n];
}
}
} else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
// XXX this should be using what in 2.0 would have been:
// Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
for (nframes_t n = 0; n < to_read; ++n) {
mixdown_buffer[n] *= _scale_amplitude;
}
}
if (!opaque() && (buf != mixdown_buffer)) {
/* gack. the things we do for users.
*/
buf += buf_offset;
for (nframes_t n = 0; n < to_read; ++n) {
buf[n] += mixdown_buffer[n];
}
}
return to_read;
}
XMLNode&
AudioRegion::state ()
{
XMLNode& node (Region::state ());
XMLNode *child;
char buf[64];
LocaleGuard lg (X_("POSIX"));
snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size());
node.add_property ("channels", buf);
Stateful::add_properties (node);
child = node.add_child ("Envelope");
bool default_env = false;
// If there are only two points, the points are in the start of the region and the end of the region
// so, if they are both at 1.0f, that means the default region.
if (_envelope->size() == 2 &&
_envelope->front()->value == 1.0f &&
_envelope->back()->value==1.0f) {
if (_envelope->front()->when == 0 && _envelope->back()->when == _length) {
default_env = true;
}
}
if (default_env) {
child->add_property ("default", "yes");
} else {
child->add_child_nocopy (_envelope->get_state ());
}
child = node.add_child (X_("FadeIn"));
if (_default_fade_in) {
child->add_property ("default", "yes");
} else {
child->add_child_nocopy (_fade_in->get_state ());
}
child = node.add_child (X_("FadeOut"));
if (_default_fade_out) {
child->add_property ("default", "yes");
} else {
child->add_child_nocopy (_fade_out->get_state ());
}
return node;
}
int
AudioRegion::_set_state (const XMLNode& node, int version, PropertyChange& what_changed, bool send)
{
const XMLNodeList& nlist = node.children();
const XMLProperty *prop;
LocaleGuard lg (X_("POSIX"));
boost::shared_ptr<Playlist> the_playlist (_playlist.lock());
suspend_property_changes ();
if (the_playlist) {
the_playlist->freeze ();
}
/* this will set all our State members and stuff controlled by the Region.
It should NOT send any changed signals - that is our responsibility.
*/
Region::_set_state (node, version, what_changed, false);
if ((prop = node.property ("scale-gain")) != 0) {
float a = atof (prop->value().c_str());
if (a != _scale_amplitude) {
_scale_amplitude = a;
what_changed.add (Properties::scale_amplitude);
}
}
/* Now find envelope description and other related child items */
_envelope->freeze ();
for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) {
XMLNode *child;
XMLProperty *prop;
child = (*niter);
if (child->name() == "Envelope") {
_envelope->clear ();
if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child, version)) {
set_default_envelope ();
}
_envelope->set_max_xval (_length);
_envelope->truncate_end (_length);
} else if (child->name() == "FadeIn") {
_fade_in->clear ();
if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
set_default_fade_in ();
} else {
XMLNode* grandchild = child->child ("AutomationList");
if (grandchild) {
_fade_in->set_state (*grandchild, version);
}
}
if ((prop = child->property ("active")) != 0) {
if (string_is_affirmative (prop->value())) {
set_fade_in_active (true);
} else {
set_fade_in_active (false);
}
}
} else if (child->name() == "FadeOut") {
_fade_out->clear ();
if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
set_default_fade_out ();
} else {
XMLNode* grandchild = child->child ("AutomationList");
if (grandchild) {
_fade_out->set_state (*grandchild, version);
}
}
if ((prop = child->property ("active")) != 0) {
if (string_is_affirmative (prop->value())) {
set_fade_out_active (true);
} else {
set_fade_out_active (false);
}
}
}
}
_envelope->thaw ();
resume_property_changes ();
if (send) {
send_change (what_changed);
}
if (the_playlist) {
the_playlist->thaw ();
}
return 0;
}
int
AudioRegion::set_state (const XMLNode& node, int version)
{
PropertyChange what_changed;
return _set_state (node, version, what_changed, true);
}
void
AudioRegion::set_fade_in_shape (FadeShape shape)
{
set_fade_in (shape, (nframes_t) _fade_in->back()->when);
}
void
AudioRegion::set_fade_out_shape (FadeShape shape)
{
set_fade_out (shape, (nframes_t) _fade_out->back()->when);
}
void
AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
{
_fade_in->freeze ();
*_fade_in = *f;
_fade_in->thaw ();
send_change (PropertyChange (Properties::fade_in));
}
void
AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
{
_fade_in->freeze ();
_fade_in->clear ();
switch (shape) {
case Linear:
_fade_in->fast_simple_add (0.0, 0.0);
_fade_in->fast_simple_add (len, 1.0);
break;
case Fast:
_fade_in->fast_simple_add (0, 0);
_fade_in->fast_simple_add (len * 0.389401, 0.0333333);
_fade_in->fast_simple_add (len * 0.629032, 0.0861111);
_fade_in->fast_simple_add (len * 0.829493, 0.233333);
_fade_in->fast_simple_add (len * 0.9447, 0.483333);
_fade_in->fast_simple_add (len * 0.976959, 0.697222);
_fade_in->fast_simple_add (len, 1);
break;
case Slow:
_fade_in->fast_simple_add (0, 0);
_fade_in->fast_simple_add (len * 0.0207373, 0.197222);
_fade_in->fast_simple_add (len * 0.0645161, 0.525);
_fade_in->fast_simple_add (len * 0.152074, 0.802778);
_fade_in->fast_simple_add (len * 0.276498, 0.919444);
_fade_in->fast_simple_add (len * 0.481567, 0.980556);
_fade_in->fast_simple_add (len * 0.767281, 1);
_fade_in->fast_simple_add (len, 1);
break;
case LogA:
_fade_in->fast_simple_add (0, 0);
_fade_in->fast_simple_add (len * 0.0737327, 0.308333);
_fade_in->fast_simple_add (len * 0.246544, 0.658333);
_fade_in->fast_simple_add (len * 0.470046, 0.886111);
_fade_in->fast_simple_add (len * 0.652074, 0.972222);
_fade_in->fast_simple_add (len * 0.771889, 0.988889);
_fade_in->fast_simple_add (len, 1);
break;
case LogB:
_fade_in->fast_simple_add (0, 0);
_fade_in->fast_simple_add (len * 0.304147, 0.0694444);
_fade_in->fast_simple_add (len * 0.529954, 0.152778);
_fade_in->fast_simple_add (len * 0.725806, 0.333333);
_fade_in->fast_simple_add (len * 0.847926, 0.558333);
_fade_in->fast_simple_add (len * 0.919355, 0.730556);
_fade_in->fast_simple_add (len, 1);
break;
}
_fade_in->thaw ();
}
void
AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
{
_fade_out->freeze ();
*_fade_out = *f;
_fade_out->thaw ();
send_change (PropertyChange (Properties::fade_in));
}
void
AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
{
_fade_out->freeze ();
_fade_out->clear ();
switch (shape) {
case Fast:
_fade_out->fast_simple_add (len * 0, 1);
_fade_out->fast_simple_add (len * 0.023041, 0.697222);
_fade_out->fast_simple_add (len * 0.0553, 0.483333);
_fade_out->fast_simple_add (len * 0.170507, 0.233333);
_fade_out->fast_simple_add (len * 0.370968, 0.0861111);
_fade_out->fast_simple_add (len * 0.610599, 0.0333333);
_fade_out->fast_simple_add (len * 1, 0);
break;
case LogA:
_fade_out->fast_simple_add (len * 0, 1);
_fade_out->fast_simple_add (len * 0.228111, 0.988889);
_fade_out->fast_simple_add (len * 0.347926, 0.972222);
_fade_out->fast_simple_add (len * 0.529954, 0.886111);
_fade_out->fast_simple_add (len * 0.753456, 0.658333);
_fade_out->fast_simple_add (len * 0.9262673, 0.308333);
_fade_out->fast_simple_add (len * 1, 0);
break;
case Slow:
_fade_out->fast_simple_add (len * 0, 1);
_fade_out->fast_simple_add (len * 0.305556, 1);
_fade_out->fast_simple_add (len * 0.548611, 0.991736);
_fade_out->fast_simple_add (len * 0.759259, 0.931129);
_fade_out->fast_simple_add (len * 0.918981, 0.68595);
_fade_out->fast_simple_add (len * 0.976852, 0.22865);
_fade_out->fast_simple_add (len * 1, 0);
break;
case LogB:
_fade_out->fast_simple_add (len * 0, 1);
_fade_out->fast_simple_add (len * 0.080645, 0.730556);
_fade_out->fast_simple_add (len * 0.277778, 0.289256);
_fade_out->fast_simple_add (len * 0.470046, 0.152778);
_fade_out->fast_simple_add (len * 0.695853, 0.0694444);
_fade_out->fast_simple_add (len * 1, 0);
break;
case Linear:
_fade_out->fast_simple_add (len * 0, 1);
_fade_out->fast_simple_add (len * 1, 0);
break;
}
_fade_out->thaw ();
}
void
AudioRegion::set_fade_in_length (framecnt_t len)
{
if (len > _length) {
len = _length - 1;
}
bool changed = _fade_in->extend_to (len);
if (changed) {
_default_fade_in = false;
send_change (PropertyChange (Properties::fade_in));
}
}
void
AudioRegion::set_fade_out_length (framecnt_t len)
{
if (len > _length) {
len = _length - 1;
}
bool changed = _fade_out->extend_to (len);
if (changed) {
_default_fade_out = false;
send_change (PropertyChange (Properties::fade_out));
}
}
void
AudioRegion::set_fade_in_active (bool yn)
{
if (yn == _fade_in_active) {
return;
}
_fade_in_active = yn;
send_change (PropertyChange (Properties::fade_in_active));
}
void
AudioRegion::set_fade_out_active (bool yn)
{
if (yn == _fade_out_active) {
return;
}
_fade_out_active = yn;
send_change (PropertyChange (Properties::fade_out_active));
}
bool
AudioRegion::fade_in_is_default () const
{
return _fade_in->size() == 2 && _fade_in->front()->when == 0 && _fade_in->back()->when == 64;
}
bool
AudioRegion::fade_out_is_default () const
{
return _fade_out->size() == 2 && _fade_out->front()->when == 0 && _fade_out->back()->when == 64;
}
void
AudioRegion::set_default_fade_in ()
{
_fade_in_suspended = 0;
set_fade_in (Linear, 64);
}
void
AudioRegion::set_default_fade_out ()
{
_fade_out_suspended = 0;
set_fade_out (Linear, 64);
}
void
AudioRegion::set_default_fades ()
{
set_default_fade_in ();
set_default_fade_out ();
}
void
AudioRegion::set_default_envelope ()
{
_envelope->freeze ();
_envelope->clear ();
_envelope->fast_simple_add (0, 1.0f);
_envelope->fast_simple_add (_length, 1.0f);
_envelope->thaw ();
}
void
AudioRegion::recompute_at_end ()
{
/* our length has changed. recompute a new final point by interpolating
based on the the existing curve.
*/
_envelope->freeze ();
_envelope->truncate_end (_length);
_envelope->set_max_xval (_length);
_envelope->thaw ();
if (_left_of_split) {
set_default_fade_out ();
_left_of_split = false;
} else if (_fade_out->back()->when > _length) {
_fade_out->extend_to (_length);
send_change (PropertyChange (Properties::fade_out));
}
if (_fade_in->back()->when > _length) {
_fade_in->extend_to (_length);
send_change (PropertyChange (Properties::fade_in));
}
}
void
AudioRegion::recompute_at_start ()
{
/* as above, but the shift was from the front */
_envelope->truncate_start (_length);
if (_right_of_split) {
set_default_fade_in ();
_right_of_split = false;
} else if (_fade_in->back()->when > _length) {
_fade_in->extend_to (_length);
send_change (PropertyChange (Properties::fade_in));
}
if (_fade_out->back()->when > _length) {
_fade_out->extend_to (_length);
send_change (PropertyChange (Properties::fade_out));
}
}
int
AudioRegion::separate_by_channel (Session& /*session*/, vector<boost::shared_ptr<Region> >& v) const
{
SourceList srcs;
string new_name;
int n = 0;
if (_sources.size() < 2) {
return 0;
}
for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) {
srcs.clear ();
srcs.push_back (*i);
new_name = _name;
if (_sources.size() == 2) {
if (n == 0) {
new_name += "-L";
} else {
new_name += "-R";
}
} else {
new_name += '-';
new_name += ('0' + n + 1);
}
/* create a copy with just one source. prevent if from being thought of as
"whole file" even if it covers the entire source file(s).
*/
PropertyList plist;
plist.add (Properties::start, _start.val());
plist.add (Properties::length, _length.val());
plist.add (Properties::name, new_name);
plist.add (Properties::layer, _layer.val());
v.push_back(RegionFactory::create (srcs, plist));
v.back()->set_whole_file (false);
++n;
}
return 0;
}
framecnt_t
AudioRegion::read_raw_internal (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
{
return audio_source()->read (buf, pos, cnt, channel);
}
int
AudioRegion::exportme (Session& /*session*/, ARDOUR::ExportSpecification& /*spec*/)
{
// TODO EXPORT
// const nframes_t blocksize = 4096;
// nframes_t to_read;
// int status = -1;
//
// spec.channels = _sources.size();
//
// if (spec.prepare (blocksize, session.frame_rate())) {
// goto out;
// }
//
// spec.pos = 0;
// spec.total_frames = _length;
//
// while (spec.pos < _length && !spec.stop) {
//
//
// /* step 1: interleave */
//
// to_read = min (_length - spec.pos, blocksize);
//
// if (spec.channels == 1) {
//
// if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) {
// goto out;
// }
//
// } else {
//
// Sample buf[blocksize];
//
// for (uint32_t chan = 0; chan < spec.channels; ++chan) {
//
// if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) {
// goto out;
// }
//
// for (nframes_t x = 0; x < to_read; ++x) {
// spec.dataF[chan+(x*spec.channels)] = buf[x];
// }
// }
// }
//
// if (spec.process (to_read)) {
// goto out;
// }
//
// spec.pos += to_read;
// spec.progress = (double) spec.pos /_length;
//
// }
//
// status = 0;
//
// out:
// spec.running = false;
// spec.status = status;
// spec.clear();
//
// return status;
return 0;
}
void
AudioRegion::set_scale_amplitude (gain_t g)
{
boost::shared_ptr<Playlist> pl (playlist());
_scale_amplitude = g;
/* tell the diskstream we're in */
if (pl) {
pl->ContentsChanged();
}
/* tell everybody else */
send_change (PropertyChange (Properties::scale_amplitude));
}
/** @return the maximum (linear) amplitude of the region */
double
AudioRegion::maximum_amplitude () const
{
framepos_t fpos = _start;
framepos_t const fend = _start + _length;
double maxamp = 0;
framecnt_t const blocksize = 64 * 1024;
Sample buf[blocksize];
while (fpos < fend) {
uint32_t n;
framecnt_t const to_read = min (fend - fpos, blocksize);
for (n = 0; n < n_channels(); ++n) {
/* read it in */
if (read_raw_internal (buf, fpos, to_read, 0) != to_read) {
return 0;
}
maxamp = compute_peak (buf, to_read, maxamp);
}
fpos += to_read;
}
return maxamp;
}
/** Normalize using a given maximum amplitude and target, so that region
* _scale_amplitude becomes target / max_amplitude.
*/
void
AudioRegion::normalize (float max_amplitude, float target_dB)
{
gain_t target = dB_to_coefficient (target_dB);
if (target == 1.0f) {
/* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear
that we may have clipped.
*/
target -= FLT_EPSILON;
}
if (max_amplitude == 0.0f) {
/* don't even try */
return;
}
if (max_amplitude == target) {
/* we can't do anything useful */
return;
}
set_scale_amplitude (target / max_amplitude);
}
void
AudioRegion::fade_in_changed ()
{
send_change (PropertyChange (Properties::fade_in));
}
void
AudioRegion::fade_out_changed ()
{
send_change (PropertyChange (Properties::fade_out));
}
void
AudioRegion::envelope_changed ()
{
send_change (PropertyChange (Properties::envelope));
}
void
AudioRegion::suspend_fade_in ()
{
if (++_fade_in_suspended == 1) {
if (fade_in_is_default()) {
set_fade_in_active (false);
}
}
}
void
AudioRegion::resume_fade_in ()
{
if (--_fade_in_suspended == 0 && _fade_in_suspended) {
set_fade_in_active (true);
}
}
void
AudioRegion::suspend_fade_out ()
{
if (++_fade_out_suspended == 1) {
if (fade_out_is_default()) {
set_fade_out_active (false);
}
}
}
void
AudioRegion::resume_fade_out ()
{
if (--_fade_out_suspended == 0 &&_fade_out_suspended) {
set_fade_out_active (true);
}
}
bool
AudioRegion::speed_mismatch (float sr) const
{
if (_sources.empty()) {
/* impossible, but ... */
return false;
}
float fsr = audio_source()->sample_rate();
return fsr != sr;
}
void
AudioRegion::source_offset_changed ()
{
/* XXX this fixes a crash that should not occur. It does occur
becauses regions are not being deleted when a session
is unloaded. That bug must be fixed.
*/
if (_sources.empty()) {
return;
}
boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front());
if (afs && afs->destructive()) {
// set_start (source()->natural_position(), this);
set_position (source()->natural_position(), this);
}
}
boost::shared_ptr<AudioSource>
AudioRegion::audio_source (uint32_t n) const
{
// Guaranteed to succeed (use a static cast for speed?)
return boost::dynamic_pointer_cast<AudioSource>(source(n));
}
int
AudioRegion::adjust_transients (nframes64_t delta)
{
for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
(*x) = (*x) + delta;
}
send_change (PropertyChange (Properties::valid_transients));
return 0;
}
int
AudioRegion::update_transient (nframes64_t old_position, nframes64_t new_position)
{
for (AnalysisFeatureList::iterator x = _transients.begin(); x != _transients.end(); ++x) {
if ((*x) == old_position) {
(*x) = new_position;
send_change (PropertyChange (Properties::valid_transients));
break;
}
}
return 0;
}
void
AudioRegion::add_transient (nframes64_t where)
{
_transients.push_back(where);
_valid_transients = true;
send_change (PropertyChange (Properties::valid_transients));
}
void
AudioRegion::remove_transient (nframes64_t where)
{
_transients.remove(where);
_valid_transients = true;
send_change (PropertyChange (Properties::valid_transients));
}
int
AudioRegion::set_transients (AnalysisFeatureList& results)
{
_transients.clear();
_transients = results;
_valid_transients = true;
send_change (PropertyChange (Properties::valid_transients));
return 0;
}
int
AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new)
{
boost::shared_ptr<Playlist> pl = playlist();
if (!pl) {
return -1;
}
if (_valid_transients && !force_new) {
results = _transients;
return 0;
}
SourceList::iterator s;
for (s = _sources.begin() ; s != _sources.end(); ++s) {
if (!(*s)->has_been_analysed()) {
cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n";
break;
}
}
if (s == _sources.end()) {
/* all sources are analyzed, merge data from each one */
for (s = _sources.begin() ; s != _sources.end(); ++s) {
/* find the set of transients within the bounds of this region */
AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(),
(*s)->transients.end(),
_start);
AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(),
(*s)->transients.end(),
_start + _length);
/* and add them */
results.insert (results.end(), low, high);
}
TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
/* translate all transients to current position */
for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) {
(*x) -= _start;
(*x) += _position;
}
_transients = results;
_valid_transients = true;
return 0;
}
/* no existing/complete transient info */
static bool analyse_dialog_shown = false; /* global per instance of Ardour */
if (!Config->get_auto_analyse_audio()) {
if (!analyse_dialog_shown) {
pl->session().Dialog (_("\
You have requested an operation that requires audio analysis.\n\n\
You currently have \"auto-analyse-audio\" disabled, which means \
that transient data must be generated every time it is required.\n\n\
If you are doing work that will require transient data on a \
regular basis, you should probably enable \"auto-analyse-audio\" \
then quit ardour and restart.\n\n\
This dialog will not display again. But you may notice a slight delay \
in this and future transient-detection operations.\n\
"));
analyse_dialog_shown = true;
}
}
TransientDetector t (pl->session().frame_rate());
bool existing_results = !results.empty();
_transients.clear ();
_valid_transients = false;
for (uint32_t i = 0; i < n_channels(); ++i) {
AnalysisFeatureList these_results;
t.reset ();
if (t.run ("", this, i, these_results)) {
return -1;
}
/* translate all transients to give absolute position */
for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) {
(*i) += _position;
}
/* merge */
_transients.insert (_transients.end(), these_results.begin(), these_results.end());
}
if (!results.empty()) {
if (existing_results) {
/* merge our transients into the existing ones, then clean up
those.
*/
results.insert (results.end(), _transients.begin(), _transients.end());
TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0);
}
/* make sure ours are clean too */
TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
} else {
TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0);
results = _transients;
}
_valid_transients = true;
return 0;
}
/** Find areas of `silence' within a region.
*
* @param threshold Threshold below which signal is considered silence (as a sample value)
* @param min_length Minimum length of silent period to be reported.
* @return Silent periods; first of pair is the offset within the region, second is the length of the period
*/
std::list<std::pair<frameoffset_t, framecnt_t> >
AudioRegion::find_silence (Sample threshold, framecnt_t min_length, InterThreadInfo& itt) const
{
framecnt_t const block_size = 64 * 1024;
Sample loudest[block_size];
Sample buf[block_size];
framepos_t pos = _start;
framepos_t const end = _start + _length - 1;
std::list<std::pair<frameoffset_t, framecnt_t> > silent_periods;
bool in_silence = false;
frameoffset_t silence_start = 0;
bool silence;
while (pos < end && !itt.cancel) {
/* fill `loudest' with the loudest absolute sample at each instant, across all channels */
memset (loudest, 0, sizeof (Sample) * block_size);
for (uint32_t n = 0; n < n_channels(); ++n) {
read_raw_internal (buf, pos, block_size, n);
for (framecnt_t i = 0; i < block_size; ++i) {
loudest[i] = max (loudest[i], abs (buf[i]));
}
}
/* now look for silence */
for (framecnt_t i = 0; i < block_size; ++i) {
silence = abs (loudest[i]) < threshold;
if (silence && !in_silence) {
/* non-silence to silence */
in_silence = true;
silence_start = pos + i;
} else if (!silence && in_silence) {
/* silence to non-silence */
in_silence = false;
if (pos + i - 1 - silence_start >= min_length) {
silent_periods.push_back (std::make_pair (silence_start, pos + i - 1));
}
}
}
pos += block_size;
itt.progress = (end-pos)/(double)_length;
}
if (in_silence && end - 1 - silence_start >= min_length) {
/* last block was silent, so finish off the last period */
silent_periods.push_back (std::make_pair (silence_start, end));
}
itt.done = true;
return silent_periods;
}
extern "C" {
int region_read_peaks_from_c (void *arg, uint32_t npeaks, uint32_t start, uint32_t cnt, intptr_t data, uint32_t n_chan, double samples_per_unit)
{
return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
}
uint32_t region_length_from_c (void *arg)
{
return ((AudioRegion *) arg)->length();
}
uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
{
return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;
}
} /* extern "C" */
View Git Blame Copy Permalink