#include <boost/scoped_array.hpp>
-#include <glibmm/thread.h>
+#include <glibmm/threads.h>
#include "pbd/basename.h"
#include "pbd/xml++.h"
#include "evoral/Curve.hpp"
#include "ardour/audioregion.h"
-#include "ardour/debug.h"
#include "ardour/session.h"
#include "ardour/dB.h"
+#include "ardour/debug.h"
#include "ardour/playlist.h"
#include "ardour/audiofilesource.h"
#include "ardour/region_factory.h"
PBD::PropertyDescriptor<bool> fade_in_active;
PBD::PropertyDescriptor<bool> fade_out_active;
PBD::PropertyDescriptor<float> scale_amplitude;
+ PBD::PropertyDescriptor<boost::shared_ptr<AutomationList> > fade_in;
+ PBD::PropertyDescriptor<boost::shared_ptr<AutomationList> > inverse_fade_in;
+ PBD::PropertyDescriptor<boost::shared_ptr<AutomationList> > fade_out;
+ PBD::PropertyDescriptor<boost::shared_ptr<AutomationList> > inverse_fade_out;
+ PBD::PropertyDescriptor<boost::shared_ptr<AutomationList> > envelope;
}
}
reverse_curve (boost::shared_ptr<Evoral::ControlList> dst, boost::shared_ptr<const Evoral::ControlList> src)
{
size_t len = src->back()->when;
-
- for (Evoral::ControlList::const_iterator it = src->begin(); it!=src->end(); it++) {
- dst->add ( len - (*it)->when, (*it)->value );
+ for (Evoral::ControlList::const_reverse_iterator it = src->rbegin(); it!=src->rend(); it++) {
+ dst->fast_simple_add (len - (*it)->when, (*it)->value);
}
}
static void
generate_inverse_power_curve (boost::shared_ptr<Evoral::ControlList> dst, boost::shared_ptr<const Evoral::ControlList> src)
{
- //calc inverse curve using sum of squares
+ // calc inverse curve using sum of squares
for (Evoral::ControlList::const_iterator it = src->begin(); it!=src->end(); ++it ) {
float value = (*it)->value;
value = 1 - powf(value,2);
}
}
-/*
-static void
-generate_inverse_coefficient_curve (boost::shared_ptr<Evoral::ControlList> dst, boost::shared_ptr<const Evoral::ControlList> src)
-{
- //calc inverse gain coefficient curve
- for (Evoral::ControlList::const_iterator it = src->begin(); it!=src->end(); ++it ) {
- float value = 1.0 - (*it)->value;
- dst->fast_simple_add ( (*it)->when, value );
- }
-}
-*/
-
static void
generate_db_fade (boost::shared_ptr<Evoral::ControlList> dst, double len, int num_steps, float dB_drop)
{
+ dst->clear ();
dst->fast_simple_add (0, 1);
//generate a fade-out curve by successively applying a gain drop
interp += v2 * ( (double)count / (double)size );
interp = dB_to_coefficient(interp);
- dst->add ( (*c1)->when, interp );
+ dst->fast_simple_add ( (*c1)->when, interp );
c1++;
count++;
}
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));
+ Properties::fade_in.property_id = g_quark_from_static_string (X_("FadeIn"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for FadeIn = %1\n", Properties::fade_in.property_id));
+ Properties::inverse_fade_in.property_id = g_quark_from_static_string (X_("InverseFadeIn"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for InverseFadeIn = %1\n", Properties::inverse_fade_in.property_id));
+ Properties::fade_out.property_id = g_quark_from_static_string (X_("FadeOut"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for FadeOut = %1\n", Properties::fade_out.property_id));
+ Properties::inverse_fade_out.property_id = g_quark_from_static_string (X_("InverseFadeOut"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for InverseFadeOut = %1\n", Properties::inverse_fade_out.property_id));
+ Properties::envelope.property_id = g_quark_from_static_string (X_("Envelope"));
+ DEBUG_TRACE (DEBUG::Properties, string_compose ("quark for Envelope = %1\n", Properties::envelope.property_id));
}
void
add_property (_fade_in_active);
add_property (_fade_out_active);
add_property (_scale_amplitude);
+ add_property (_fade_in);
+ add_property (_inverse_fade_in);
+ add_property (_fade_out);
+ add_property (_inverse_fade_out);
+ add_property (_envelope);
}
#define AUDIOREGION_STATE_DEFAULT \
, _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)
+ , _scale_amplitude (Properties::scale_amplitude, 1.0) \
+ , _fade_in (Properties::fade_in, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter (FadeInAutomation)))) \
+ , _inverse_fade_in (Properties::inverse_fade_in, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter (FadeInAutomation)))) \
+ , _fade_out (Properties::fade_out, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter (FadeOutAutomation)))) \
+ , _inverse_fade_out (Properties::inverse_fade_out, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter (FadeOutAutomation))))
#define AUDIOREGION_COPY_STATE(other) \
_envelope_active (Properties::envelope_active, other->_envelope_active) \
, _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)
+ , _scale_amplitude (Properties::scale_amplitude, other->_scale_amplitude) \
+ , _fade_in (Properties::fade_in, boost::shared_ptr<AutomationList> (new AutomationList (*other->_fade_in.val()))) \
+ , _inverse_fade_in (Properties::fade_in, boost::shared_ptr<AutomationList> (new AutomationList (*other->_inverse_fade_in.val()))) \
+ , _fade_out (Properties::fade_in, boost::shared_ptr<AutomationList> (new AutomationList (*other->_fade_out.val()))) \
+ , _inverse_fade_out (Properties::fade_in, boost::shared_ptr<AutomationList> (new AutomationList (*other->_inverse_fade_out.val())))
/* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */
void
AudioRegion::AudioRegion (Session& s, framepos_t start, framecnt_t len, std::string name)
: Region (s, start, len, name, DataType::AUDIO)
, AUDIOREGION_STATE_DEFAULT
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter(EnvelopeAutomation))))
, _automatable (s)
- , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _inverse_fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _inverse_fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
init ();
assert (_sources.size() == _master_sources.size());
AudioRegion::AudioRegion (const SourceList& srcs)
: Region (srcs)
, AUDIOREGION_STATE_DEFAULT
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList (Evoral::Parameter(EnvelopeAutomation))))
, _automatable(srcs[0]->session())
- , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _inverse_fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _inverse_fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
init ();
assert (_sources.size() == _master_sources.size());
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
: Region (other)
, AUDIOREGION_COPY_STATE (other)
- , _automatable (other->session())
- , _fade_in (new AutomationList (*other->_fade_in))
- , _inverse_fade_in (new AutomationList(*other->_inverse_fade_in))
- , _fade_out (new AutomationList (*other->_fade_out))
- , _inverse_fade_out (new AutomationList (*other->_inverse_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, 0, other->_length))
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList (*other->_envelope.val(), 0, other->_length)))
+ , _automatable (other->session())
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
/* don't use init here, because we got fade in/out from the other region
*/
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, framecnt_t offset)
: Region (other, offset)
, AUDIOREGION_COPY_STATE (other)
- , _automatable (other->session())
- , _fade_in (new AutomationList (*other->_fade_in))
- , _inverse_fade_in (new AutomationList(*other->_inverse_fade_in))
- , _fade_out (new AutomationList (*other->_fade_out))
- , _inverse_fade_out (new AutomationList (*other->_inverse_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))
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList (*other->_envelope.val(), offset, other->_length)))
+ , _automatable (other->session())
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
/* don't use init here, because we got fade in/out from the other region
*/
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, const SourceList& srcs)
: Region (boost::static_pointer_cast<const Region>(other), srcs)
, AUDIOREGION_COPY_STATE (other)
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList (*other->_envelope.val())))
, _automatable (other->session())
- , _fade_in (new AutomationList (*other->_fade_in))
- , _inverse_fade_in (new AutomationList(*other->_inverse_fade_in))
- , _fade_out (new AutomationList (*other->_fade_out))
- , _inverse_fade_out (new AutomationList (*other->_inverse_fade_out))
- , _envelope (new AutomationList (*other->_envelope))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
/* make-a-sort-of-copy-with-different-sources constructor (used by audio filter) */
AudioRegion::AudioRegion (SourceList& srcs)
: Region (srcs)
, AUDIOREGION_STATE_DEFAULT
+ , _envelope (Properties::envelope, boost::shared_ptr<AutomationList> (new AutomationList(Evoral::Parameter(EnvelopeAutomation))))
, _automatable(srcs[0]->session())
- , _fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _inverse_fade_in (new AutomationList(Evoral::Parameter(FadeInAutomation)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _inverse_fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
- , _fade_in_is_xfade (false)
- , _fade_out_is_xfade (false)
{
init ();
return 0;
}
- if (muted()) {
- return 0; /* read nothing */
- }
-
-
/* WORK OUT WHERE TO GET DATA FROM */
framecnt_t to_read;
/* COMPUTE DETAILS OF ANY FADES INVOLVED IN THIS READ */
- /* Amount of fade in that we are dealing with in this read */
+ /* Amount (length) of fade in that we are dealing with in this read */
framecnt_t fade_in_limit = 0;
/* Offset from buf / mixdown_buffer of the start
*/
frameoffset_t fade_out_offset = 0;
- /* Amount of fade in that we are dealing with in this read */
+ /* Amount (length) of fade out that we are dealing with in this read */
framecnt_t fade_out_limit = 0;
framecnt_t fade_interval_start = 0;
if (_fade_in_active && _session.config.get_use_region_fades()) {
framecnt_t fade_in_length = (framecnt_t) _fade_in->back()->when;
-
+
/* see if this read is within the fade in */
if (internal_offset < fade_in_length) {
/* READ DATA FROM THE SOURCE INTO mixdown_buffer.
We can never read directly into buf, since it may contain data
- from a transparent region `below' this one in the stack; we
- must always mix.
+ from a region `below' this one in the stack, and our fades (if they exist)
+ may need to mix with the existing data.
*/
if (read_from_sources (_sources, _length, mixdown_buffer, position, to_read, chan_n) != to_read) {
apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude);
}
-
/* APPLY FADES TO THE DATA IN mixdown_buffer AND MIX THE RESULTS INTO
* buf. The key things to realize here: (1) the fade being applied is
* (as of April 26th 2012) just the inverse of the fade in curve (2)
if (opaque()) {
if (_inverse_fade_in) {
-
+
/* explicit inverse fade in curve (e.g. for constant
* power), so we have to fetch it.
*/
_fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
}
-
/* Mix our newly-read data in, with the fade */
for (framecnt_t n = 0; n < fade_in_limit; ++n) {
buf[n] += mixdown_buffer[n] * gain_buffer[n];
_inverse_fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
- /* Fade the data from lower levels out */
+ /* Fade the data from lower levels in */
for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
buf[m] *= gain_buffer[n];
}
/* fetch the actual fade out */
-
+
_fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
} else {
-
- /* no explicit inverse fade out, so just use (1 - fade
+
+ /* no explicit inverse fade out (which is
+ * actually a fade in), so just use (1 - fade
* out) for the fade in of lower layers
*/
_fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
}
- /* Mix our newly-read data out, with the fade */
+ /* Mix our newly-read data with whatever was already there,
+ with the fade out applied to our data.
+ */
for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
buf[m] += mixdown_buffer[m] * gain_buffer[n];
}
}
-
- /* MIX THE REGION BODY FROM mixdown_buffer INTO buf */
-
- mix_buffers_no_gain (buf + fade_in_limit, mixdown_buffer + fade_in_limit, to_read - fade_in_limit - fade_out_limit);
+ /* MIX OR COPY THE REGION BODY FROM mixdown_buffer INTO buf */
+
+ framecnt_t const N = to_read - fade_in_limit - fade_out_limit;
+ if (N > 0) {
+ if (opaque ()) {
+ DEBUG_TRACE (DEBUG::AudioPlayback, string_compose ("Region %1 memcpy into buf @ %2 + %3, from mixdown buffer @ %4 + %5, len = %6 cnt was %7\n",
+ name(), buf, fade_in_limit, mixdown_buffer, fade_in_limit, N, cnt));
+ memcpy (buf + fade_in_limit, mixdown_buffer + fade_in_limit, N * sizeof (Sample));
+ } else {
+ mix_buffers_no_gain (buf + fade_in_limit, mixdown_buffer + fade_in_limit, N);
+ }
+ }
return to_read;
}
*/
if (Config->get_replicate_missing_region_channels()) {
- /* track is N-channel, this region has less channels, so use a relevant channel
- */
+
+ /* copy an existing channel's data in for this non-existant one */
uint32_t channel = n_channels() % chan_n;
boost::shared_ptr<AudioSource> src = boost::dynamic_pointer_cast<AudioSource> (srcs[channel]);
if (src->read (buf, _start + internal_offset, to_read) != to_read) {
return 0; /* "read nothing" */
}
+
+ } else {
+
+ /* use silence */
+ memset (buf, 0, sizeof (Sample) * to_read);
}
}
}
XMLNode&
-AudioRegion::state ()
+AudioRegion::get_basic_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);
+ return node;
+}
+
+XMLNode&
+AudioRegion::state ()
+{
+ XMLNode& node (get_basic_state());
+ XMLNode *child;
+ LocaleGuard lg (X_("POSIX"));
child = node.add_child ("Envelope");
}
child = node.add_child (X_("FadeIn"));
- child->add_property ("is-xfade", (_fade_in_is_xfade ? "yes" : "no"));
if (_default_fade_in) {
child->add_property ("default", "yes");
}
if (_inverse_fade_in) {
- child = node.add_child (X_("InvFadeIn"));
+ child = node.add_child (X_("InverseFadeIn"));
child->add_child_nocopy (_inverse_fade_in->get_state ());
}
child = node.add_child (X_("FadeOut"));
- child->add_property ("is-xfade", (_fade_out_is_xfade ? "yes" : "no"));
if (_default_fade_out) {
child->add_property ("default", "yes");
}
if (_inverse_fade_out) {
- child = node.add_child (X_("InvFadeOut"));
+ child = node.add_child (X_("InverseFadeOut"));
child->add_child_nocopy (_inverse_fade_out->get_state ());
}
}
}
- if ((prop = child->property ("is-xfade")) != 0) {
- _fade_in_is_xfade = string_is_affirmative (prop->value());
- } else {
- _fade_in_is_xfade = false;
- }
-
if ((prop = child->property ("active")) != 0) {
if (string_is_affirmative (prop->value())) {
set_fade_in_active (true);
_fade_out->set_state (*grandchild, version);
}
}
-
- if ((prop = child->property ("is-xfade")) != 0) {
- _fade_out_is_xfade = string_is_affirmative (prop->value());
- } else {
- _fade_out_is_xfade = false;
- }
-
- if ((prop = child->property ("active")) != 0) {
+
+ if ((prop = child->property ("active")) != 0) {
if (string_is_affirmative (prop->value())) {
set_fade_out_active (true);
} else {
set_fade_out_active (false);
}
}
-
- } else if (child->name() == "InvFadeIn") {
+
+ } else if (child->name() == "InverseFadeIn") {
XMLNode* grandchild = child->child ("AutomationList");
if (grandchild) {
_inverse_fade_in->set_state (*grandchild, version);
}
- } else if (child->name() == "InvFadeOut") {
+ } else if (child->name() == "InverseFadeOut") {
XMLNode* grandchild = child->child ("AutomationList");
if (grandchild) {
_inverse_fade_out->set_state (*grandchild, version);
AudioRegion::set_fade_in (boost::shared_ptr<AutomationList> f)
{
_fade_in->freeze ();
- *_fade_in = *f;
+ *(_fade_in.val()) = *f;
_fade_in->thaw ();
_default_fade_in = false;
case FadeLinear:
_fade_in->fast_simple_add (0.0, 0.0);
_fade_in->fast_simple_add (len, 1.0);
- reverse_curve (_inverse_fade_in, _fade_in);
+ reverse_curve (_inverse_fade_in.val(), _fade_in.val());
break;
case FadeFast:
- generate_db_fade (_fade_in, len, 10, -60);
- reverse_curve (c1, _fade_in);
+ generate_db_fade (_fade_in.val(), len, 10, -60);
+ reverse_curve (c1, _fade_in.val());
_fade_in->copy_events (*c1);
- generate_inverse_power_curve (_inverse_fade_in, _fade_in);
+ generate_inverse_power_curve (_inverse_fade_in.val(), _fade_in.val());
break;
case FadeSlow:
generate_db_fade (c1, len, 10, -1); // start off with a slow fade
generate_db_fade (c2, len, 10, -80); // end with a fast fade
- merge_curves (_fade_in, c1, c2);
- generate_inverse_power_curve (_inverse_fade_in, _fade_in);
+ merge_curves (_fade_in.val(), c1, c2);
+ reverse_curve (c3, _fade_in.val());
+ _fade_in->copy_events (*c3);
+ generate_inverse_power_curve (_inverse_fade_in.val(), _fade_in.val());
break;
case FadeConstantPower:
_fade_in->fast_simple_add (len*dist, sin (dist*M_PI/2));
}
_fade_in->fast_simple_add (len, 1.0);
- reverse_curve (_inverse_fade_in, _fade_in);
+ reverse_curve (_inverse_fade_in.val(), _fade_in.val());
break;
case FadeSymmetric:
- // starts kind of like a constant power but has a slower fadeout
- // however it is NOT constant power and there will be a level drop in the middle of the crossfade
- c1->fast_simple_add (0.0, 1.0);
- for ( int i = 1; i < 9; i++ ) {
- float dist = (float)i/10.0;
- c1->fast_simple_add ((len * dist), cos(dist*M_PI/10.0));
+ //start with a nearly linear cuve
+ _fade_in->fast_simple_add (0, 1);
+ _fade_in->fast_simple_add (0.5*len, 0.6);
+ //now generate a fade-out curve by successively applying a gain drop
+ const float breakpoint = 0.7; //linear for first 70%
+ const int num_steps = 9;
+ for (int i = 2; i < num_steps; i++) {
+ float coeff = (1.0-breakpoint);
+ for (int j = 0; j < i; j++) {
+ coeff *= 0.5; //6dB drop per step
+ }
+ _fade_in->fast_simple_add (len* (breakpoint+((1.0-breakpoint)*(double)i/(double)num_steps)), coeff);
}
- c1->fast_simple_add (len, VERY_SMALL_SIGNAL);
-
- //curve 2 is a slow fade at end
- generate_db_fade (c2, len, 10, -30 );
-
- merge_curves (c3, c1, c2);
- reverse_curve (_fade_in, c3);
- reverse_curve (_inverse_fade_in, _fade_in );
+ _fade_in->fast_simple_add (len, VERY_SMALL_SIGNAL);
+ reverse_curve (c3, _fade_in.val());
+ _fade_in->copy_events (*c3);
+ reverse_curve (_inverse_fade_in.val(), _fade_in.val());
break;
}
AudioRegion::set_fade_out (boost::shared_ptr<AutomationList> f)
{
_fade_out->freeze ();
- *_fade_out = *f;
+ *(_fade_out.val()) = *f;
_fade_out->thaw ();
_default_fade_out = false;
case FadeLinear:
_fade_out->fast_simple_add (0.0, 1.0);
_fade_out->fast_simple_add (len, VERY_SMALL_SIGNAL);
- reverse_curve (_inverse_fade_out, _fade_out);
+ reverse_curve (_inverse_fade_out.val(), _fade_out.val());
break;
case FadeFast:
- generate_db_fade (_fade_out, len, 10, -60 );
- generate_inverse_power_curve (_inverse_fade_out, _fade_out);
+ generate_db_fade (_fade_out.val(), len, 10, -60);
+ generate_inverse_power_curve (_inverse_fade_out.val(), _fade_out.val());
break;
case FadeSlow:
- generate_db_fade (c1, len, 10, -1 ); //start off with a slow fade
- generate_db_fade (c2, len, 10, -80 ); //end with a fast fade
- merge_curves (_fade_out, c1, c2);
- generate_inverse_power_curve (_inverse_fade_out, _fade_out);
+ generate_db_fade (c1, len, 10, -1); //start off with a slow fade
+ generate_db_fade (c2, len, 10, -80); //end with a fast fade
+ merge_curves (_fade_out.val(), c1, c2);
+ generate_inverse_power_curve (_inverse_fade_out.val(), _fade_out.val());
break;
case FadeConstantPower:
_fade_out->fast_simple_add ((len * dist), cos(dist*M_PI/2));
}
_fade_out->fast_simple_add (len, VERY_SMALL_SIGNAL);
- reverse_curve (_inverse_fade_out, _fade_out);
+ reverse_curve (_inverse_fade_out.val(), _fade_out.val());
break;
case FadeSymmetric:
- //starts kind of like a constant power but has a slower fadeout
- //however it is NOT constant power and there will be a level drop in the middle of the crossfade
- c1->fast_simple_add (0.0, 1.0);
- for ( int i = 1; i < 9; i++ ) {
- float dist = (float)i/10.0;
- c1->fast_simple_add ((len * dist), cos(dist*M_PI/10.0)); //cheesy way of making a flat line
+ //start with a nearly linear cuve
+ _fade_out->fast_simple_add (0, 1);
+ _fade_out->fast_simple_add (0.5*len, 0.6);
+
+ //now generate a fade-out curve by successively applying a gain drop
+ const float breakpoint = 0.7; //linear for first 70%
+ const int num_steps = 9;
+ for (int i = 2; i < num_steps; i++) {
+ float coeff = (1.0-breakpoint);
+ for (int j = 0; j < i; j++) {
+ coeff *= 0.5; //6dB drop per step
+ }
+ _fade_out->fast_simple_add (len* (breakpoint+((1.0-breakpoint)*(double)i/(double)num_steps)), coeff);
}
- c1->fast_simple_add (len, VERY_SMALL_SIGNAL);
-
- //curve 2 is a slow fade at end
- generate_db_fade (c2, len, 10, -30);
-
- merge_curves (_fade_out, c1, c2);
- reverse_curve (_inverse_fade_out, _fade_out);
+ _fade_out->fast_simple_add (len, VERY_SMALL_SIGNAL);
+ reverse_curve (_inverse_fade_out.val(), _fade_out.val());
break;
}
_inverse_fade_in->extend_to (len);
}
- if (_session.config.get_xfade_model() == FullCrossfade &&
- _session.config.get_auto_xfade() &&
- _fade_in_is_xfade) {
-
- /* trim a single other region below us to the new start
- of the fade.
- */
-
- boost::shared_ptr<Region> other = get_single_other_xfade_region (true);
- if (other) {
- other->trim_end (position() + len);
- }
- }
-
_default_fade_in = false;
send_change (PropertyChange (Properties::fade_in));
}
_inverse_fade_out->extend_to (len);
}
_default_fade_out = false;
-
- if (_session.config.get_xfade_model() == FullCrossfade &&
- _session.config.get_auto_xfade() &&
- _fade_out_is_xfade) {
-
- /* trim a single other region below us to the new start
- of the fade.
- */
-
- boost::shared_ptr<Region> other = get_single_other_xfade_region (false);
- if (other) {
- other->trim_front (last_frame() - len);
- }
- }
send_change (PropertyChange (Properties::fade_out));
}
AudioRegion::set_default_fade_in ()
{
_fade_in_suspended = 0;
- _fade_in_is_xfade = false;
set_fade_in (FadeLinear, 64);
}
AudioRegion::set_default_fade_out ()
{
_fade_out_suspended = 0;
- _fade_out_is_xfade = false;
set_fade_out (FadeLinear, 64);
}
Evoral::Range<framepos_t>
AudioRegion::body_range () const
{
- return Evoral::Range<framepos_t> (first_frame() + _fade_in->back()->when, last_frame() - _fade_out->back()->when);
-}
-
-void
-AudioRegion::set_fade_in_is_xfade (bool yn)
-{
- _fade_in_is_xfade = yn;
-}
-
-void
-AudioRegion::set_fade_out_is_xfade (bool yn)
-{
- _fade_out_is_xfade = yn;
+ return Evoral::Range<framepos_t> (first_frame() + _fade_in->back()->when + 1, last_frame() - _fade_out->back()->when);
}
boost::shared_ptr<Region>
framecnt_t
AudioRegion::verify_xfade_bounds (framecnt_t len, bool start)
{
+ /* this is called from a UI to check on whether a new proposed
+ length for an xfade is legal or not. it returns the legal
+ length corresponding to @a len which may be shorter than or
+ equal to @a len itself.
+ */
+
boost::shared_ptr<Region> other = get_single_other_xfade_region (start);
framecnt_t maxlen;
if (!other) {
- /* zero or > 2 regions here, don't care about len */
- return len;
+ /* zero or > 2 regions here, don't care about len, but
+ it can't be longer than the region itself.
+ */
+ return min (length(), len);
}
/* we overlap a single region. clamp the length of an xfade to
maxlen = last_frame() - other->earliest_possible_position();
}
- return min (maxlen, len);
+ return min (length(), min (maxlen, len));
}
projects / ardour.git / blobdiff