/*
- Copyright (C) 2003 Paul Davis
+ Copyright (C) 2003-2006 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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id$
*/
#include <sigc++/bind.h>
+#include <pbd/stacktrace.h>
+
#include <ardour/types.h>
#include <ardour/crossfade.h>
#include <ardour/crossfade_compare.h>
using namespace std;
using namespace ARDOUR;
-//using namespace sigc;
+using namespace PBD;
-jack_nframes_t Crossfade::_short_xfade_length = 0;
-Change Crossfade::ActiveChanged = ARDOUR::new_change();
+nframes_t Crossfade::_short_xfade_length = 0;
+Change Crossfade::ActiveChanged = new_change();
+Change Crossfade::FollowOverlapChanged = new_change();
/* XXX if and when we ever implement parallel processing of the process()
callback, these will need to be handled on a per-thread basis.
Sample* Crossfade::crossfade_buffer_in = 0;
void
-Crossfade::set_buffer_size (jack_nframes_t sz)
+Crossfade::set_buffer_size (nframes_t sz)
{
if (crossfade_buffer_out) {
delete [] crossfade_buffer_out;
return (_in == other._in) && (_out == other._out);
}
-Crossfade::Crossfade (ARDOUR::AudioRegion& in, ARDOUR::AudioRegion& out,
- jack_nframes_t length,
- jack_nframes_t position,
+Crossfade::Crossfade (boost::shared_ptr<AudioRegion> in, boost::shared_ptr<AudioRegion> out,
+ nframes_t length,
+ nframes_t position,
AnchorPoint ap)
: _fade_in (0.0, 2.0, 1.0), // linear (gain coefficient) => -inf..+6dB
_fade_out (0.0, 2.0, 1.0) // linear (gain coefficient) => -inf..+6dB
{
- _in = ∈
- _out = &out;
+ _in = in;
+ _out = out;
+
_length = length;
_position = position;
_anchor_point = ap;
+
_follow_overlap = false;
- _active = true;
+
+ _active = Config->get_xfades_active ();
_fixed = true;
initialize ();
}
-Crossfade::Crossfade (ARDOUR::AudioRegion& a, ARDOUR::AudioRegion& b, CrossfadeModel model, bool act)
+Crossfade::Crossfade (boost::shared_ptr<AudioRegion> a, boost::shared_ptr<AudioRegion> b, CrossfadeModel model, bool act)
: _fade_in (0.0, 2.0, 1.0), // linear (gain coefficient) => -inf..+6dB
_fade_out (0.0, 2.0, 1.0) // linear (gain coefficient) => -inf..+6dB
{
_active = act;
initialize ();
-
}
Crossfade::Crossfade (const Playlist& playlist, XMLNode& node)
: _fade_in (0.0, 2.0, 1.0), // linear (gain coefficient) => -inf..+6dB
_fade_out (0.0, 2.0, 1.0) // linear (gain coefficient) => -inf..+6dB
{
- Region* r;
+ boost::shared_ptr<Region> r;
XMLProperty* prop;
- id_t id;
LocaleGuard lg (X_("POSIX"));
/* we have to find the in/out regions before we can do anything else */
throw failed_constructor();
}
- sscanf (prop->value().c_str(), "%" PRIu64, &id);
+ PBD::ID id (prop->value());
if ((r = playlist.find_region (id)) == 0) {
error << string_compose (_("Crossfade: no \"in\" region %1 found in playlist %2"), id, playlist.name())
throw failed_constructor();
}
- if ((_in = dynamic_cast<AudioRegion*> (r)) == 0) {
+ if ((_in = boost::dynamic_pointer_cast<AudioRegion> (r)) == 0) {
throw failed_constructor();
}
throw failed_constructor();
}
- sscanf (prop->value().c_str(), "%" PRIu64, &id);
+ PBD::ID id2 (prop->value());
- if ((r = playlist.find_region (id)) == 0) {
- error << string_compose (_("Crossfade: no \"out\" region %1 found in playlist %2"), id, playlist.name())
+ if ((r = playlist.find_region (id2)) == 0) {
+ error << string_compose (_("Crossfade: no \"out\" region %1 found in playlist %2"), id2, playlist.name())
<< endmsg;
throw failed_constructor();
}
-
- if ((_out = dynamic_cast<AudioRegion*> (r)) == 0) {
+
+ if ((_out = boost::dynamic_pointer_cast<AudioRegion> (r)) == 0) {
throw failed_constructor();
}
}
}
+Crossfade::Crossfade (const Crossfade &orig, boost::shared_ptr<AudioRegion> newin, boost::shared_ptr<AudioRegion> newout)
+ : _fade_in(orig._fade_in),
+ _fade_out(orig._fade_out)
+{
+ _active = orig._active;
+ _in_update = orig._in_update;
+ _length = orig._length;
+ _position = orig._position;
+ _anchor_point = orig._anchor_point;
+ _follow_overlap = orig._follow_overlap;
+ _fixed = orig._fixed;
+
+ _in = newin;
+ _out = newout;
+
+ // copied from Crossfade::initialize()
+ _in_update = false;
+
+ _out->suspend_fade_out ();
+ _in->suspend_fade_in ();
+
+ overlap_type = _in->coverage (_out->position(), _out->last_frame());
+ layer_relation = (int32_t) (_in->layer() - _out->layer());
+
+ // Let's make sure the fade isn't too long
+ set_length(_length);
+}
+
+
Crossfade::~Crossfade ()
{
- for (StateMap::iterator i = states.begin(); i != states.end(); ++i) {
- delete *i;
- }
+ notify_callbacks ();
}
void
_fade_in.add (_length, 1.0);
_fade_in.thaw ();
-// _in->StateChanged.connect (slot (*this, &Crossfade::member_changed));
-// _out->StateChanged.connect (slot (*this, &Crossfade::member_changed));
-
overlap_type = _in->coverage (_out->position(), _out->last_frame());
-
- save_state ("initial");
+ layer_relation = (int32_t) (_in->layer() - _out->layer());
}
+nframes_t
+Crossfade::read_at (Sample *buf, Sample *mixdown_buffer,
+ float *gain_buffer, nframes_t start, nframes_t cnt, uint32_t chan_n,
+ nframes_t read_frames, nframes_t skip_frames)
+{
+ nframes_t offset;
+ nframes_t to_write;
+
+ if (!_active) {
+ return 0;
+ }
+
+ if (start < _position) {
+
+ /* handle an initial section of the read area that we do not
+ cover.
+ */
+
+ offset = _position - start;
+
+ if (offset < cnt) {
+ cnt -= offset;
+ } else {
+ return 0;
+ }
+
+ start = _position;
+ buf += offset;
+ to_write = min (_length, cnt);
+
+ } else {
+
+ to_write = min (_length - (start - _position), cnt);
+
+ }
+
+ offset = start - _position;
+
+ _out->read_at (crossfade_buffer_out, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
+ _in->read_at (crossfade_buffer_in, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
+
+ float* fiv = new float[to_write];
+ float* fov = new float[to_write];
+
+ _fade_in.get_vector (offset, offset+to_write, fiv, to_write);
+ _fade_out.get_vector (offset, offset+to_write, fov, to_write);
+
+ /* note: although we have not explicitly taken into account the return values
+ from _out->read_at() or _in->read_at(), the length() function does this
+ implicitly. why? because it computes a value based on the in+out regions'
+ position and length, and so we know precisely how much data they could return.
+ */
+
+ for (nframes_t n = 0; n < to_write; ++n) {
+ buf[n] = (crossfade_buffer_out[n] * fov[n]) + (crossfade_buffer_in[n] * fiv[n]);
+ }
+
+ delete [] fov;
+ delete [] fiv;
+
+ return to_write;
+}
+
+OverlapType
+Crossfade::coverage (nframes_t start, nframes_t end) const
+{
+ nframes_t my_end = _position + _length;
+
+ if ((start >= _position) && (end <= my_end)) {
+ return OverlapInternal;
+ }
+ if ((end >= _position) && (end <= my_end)) {
+ return OverlapStart;
+ }
+ if ((start >= _position) && (start <= my_end)) {
+ return OverlapEnd;
+ }
+ if ((_position >= start) && (_position <= end) && (my_end <= end)) {
+ return OverlapExternal;
+ }
+ return OverlapNone;
+}
+
+void
+Crossfade::set_active (bool yn)
+{
+ if (_active != yn) {
+ _active = yn;
+ StateChanged (ActiveChanged);
+ }
+}
+
+bool
+Crossfade::refresh ()
+{
+ /* crossfades must be between non-muted regions */
+
+ if (_out->muted() || _in->muted()) {
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ /* layer ordering cannot change */
+
+ int32_t new_layer_relation = (int32_t) (_in->layer() - _out->layer());
+
+ if (new_layer_relation * layer_relation < 0) { // different sign, layers rotated
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ OverlapType ot = _in->coverage (_out->first_frame(), _out->last_frame());
+
+ if (ot == OverlapNone) {
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ bool send_signal;
+
+ if (ot != overlap_type) {
+
+ if (_follow_overlap) {
+
+ try {
+ compute (_in, _out, Config->get_xfade_model());
+ }
+
+ catch (NoCrossfadeHere& err) {
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ send_signal = true;
+
+ } else {
+
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ } else {
+
+ send_signal = update ();
+ }
+
+ if (send_signal) {
+ StateChanged (BoundsChanged); /* EMIT SIGNAL */
+ }
+
+ _in_update = false;
+
+ return true;
+}
+
+bool
+Crossfade::update ()
+{
+ nframes_t newlen;
+
+ if (_follow_overlap) {
+ newlen = _out->first_frame() + _out->length() - _in->first_frame();
+ } else {
+ newlen = _length;
+ }
+
+ if (newlen == 0) {
+ Invalidated (shared_from_this());
+ return false;
+ }
+
+ _in_update = true;
+
+ if ((_follow_overlap && newlen != _length) || (_length > newlen)) {
+
+ double factor = newlen / (double) _length;
+
+ _fade_out.x_scale (factor);
+ _fade_in.x_scale (factor);
+
+ _length = newlen;
+ }
+
+ switch (_anchor_point) {
+ case StartOfIn:
+ _position = _in->first_frame();
+ break;
+
+ case EndOfIn:
+ _position = _in->last_frame() - _length;
+ break;
+
+ case EndOfOut:
+ _position = _out->last_frame() - _length;
+ }
+
+ return true;
+}
+
int
-Crossfade::compute (AudioRegion& a, AudioRegion& b, CrossfadeModel model)
+Crossfade::compute (boost::shared_ptr<AudioRegion> a, boost::shared_ptr<AudioRegion> b, CrossfadeModel model)
{
- AudioRegion* top;
- AudioRegion* bottom;
- jack_nframes_t short_xfade_length;
+ boost::shared_ptr<AudioRegion> top;
+ boost::shared_ptr<AudioRegion> bottom;
+ nframes_t short_xfade_length;
short_xfade_length = _short_xfade_length;
- if (a.layer() < b.layer()) {
- top = &b;
- bottom = &a;
+ if (a->layer() < b->layer()) {
+ top = b;
+ bottom = a;
} else {
- top = &a;
- bottom = &b;
+ top = a;
+ bottom = b;
}
/* first check for matching ends */
if (top->first_frame() == bottom->first_frame()) {
-
+
/* Both regions start at the same point */
if (top->last_frame() < bottom->last_frame()) {
_in = bottom;
_out = top;
- _position = bottom->first_frame();
_anchor_point = StartOfIn;
if (model == FullCrossfade) {
+ _position = bottom->first_frame(); // "{"
_length = _out->first_frame() + _out->length() - _in->first_frame();
/* leave active alone */
_follow_overlap = true;
} else {
_length = min (short_xfade_length, top->length());
+ _position = top->last_frame() - _length; // "]" - length
_active = true;
_follow_overlap = false;
return 0;
}
-jack_nframes_t
-Crossfade::read_at (Sample *buf, Sample *mixdown_buffer,
- float *gain_buffer, jack_nframes_t start, jack_nframes_t cnt, uint32_t chan_n,
- jack_nframes_t read_frames, jack_nframes_t skip_frames)
-{
- jack_nframes_t offset;
- jack_nframes_t to_write;
-
- if (!_active) {
- return 0;
- }
-
- if (start < _position) {
-
- /* handle an initial section of the read area that we do not
- cover.
- */
-
- offset = _position - start;
-
- if (offset < cnt) {
- cnt -= offset;
- } else {
- return 0;
- }
-
- start = _position;
- buf += offset;
- to_write = min (_length, cnt);
-
- } else {
-
- to_write = min (_length - (start - _position), cnt);
-
- }
-
- offset = start - _position;
-
- _out->read_at (crossfade_buffer_out, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
- _in->read_at (crossfade_buffer_in, mixdown_buffer, gain_buffer, start, to_write, chan_n, read_frames, skip_frames);
-
- float* fiv = new float[to_write];
- float* fov = new float[to_write];
-
- _fade_in.get_vector (offset, offset+to_write, fiv, to_write);
- _fade_out.get_vector (offset, offset+to_write, fov, to_write);
-
- /* note: although we have not explicitly taken into account the return values
- from _out->read_at() or _in->read_at(), the length() function does this
- implicitly. why? because it computes a value based on the in+out regions'
- position and length, and so we know precisely how much data they could return.
- */
-
- for (jack_nframes_t n = 0; n < to_write; ++n) {
- buf[n] = (crossfade_buffer_out[n] * fov[n]) + (crossfade_buffer_in[n] * fiv[n]);
- }
-
- delete [] fov;
- delete [] fiv;
-
- return to_write;
-}
-
-OverlapType
-Crossfade::coverage (jack_nframes_t start, jack_nframes_t end) const
-{
- jack_nframes_t my_end = _position + _length;
-
- if ((start >= _position) && (end <= my_end)) {
- return OverlapInternal;
- }
- if ((end >= _position) && (end <= my_end)) {
- return OverlapStart;
- }
- if ((start >= _position) && (start <= my_end)) {
- return OverlapEnd;
- }
- if ((_position >= start) && (_position <= end) && (my_end <= end)) {
- return OverlapExternal;
- }
- return OverlapNone;
-}
-
-void
-Crossfade::set_active (bool yn)
-{
- if (_active != yn) {
- _active = yn;
- save_state (_("active changed"));
- send_state_changed (ActiveChanged);
- }
-}
-
-bool
-Crossfade::refresh ()
-{
- /* crossfades must be between non-muted regions */
-
- if (_out->muted() || _in->muted()) {
- Invalidated (this);
- return false;
- }
-
- /* overlap type must be Start, End or External */
-
- OverlapType ot;
-
- ot = _in->coverage (_out->first_frame(), _out->last_frame());
-
- switch (ot) {
- case OverlapNone:
- case OverlapInternal:
- Invalidated (this);
- return false;
-
- default:
- break;
- }
-
- /* overlap type must not have altered */
-
- if (ot != overlap_type) {
- Invalidated (this);
- return false;
- }
-
- /* time to update */
-
- return update (false);
-}
-
-bool
-Crossfade::update (bool force)
-{
- jack_nframes_t newlen;
- bool save = false;
-
- if (_follow_overlap) {
- newlen = _out->first_frame() + _out->length() - _in->first_frame();
- } else {
- newlen = _length;
- }
-
- if (newlen == 0) {
- Invalidated (this);
- return false;
- }
-
- _in_update = true;
-
- if (force || (_follow_overlap && newlen != _length) || (_length > newlen)) {
-
- double factor = newlen / (double) _length;
-
- _fade_out.x_scale (factor);
- _fade_in.x_scale (factor);
-
- _length = newlen;
-
- save = true;
-
- }
-
- switch (_anchor_point) {
- case StartOfIn:
- if (_position != _in->first_frame()) {
- _position = _in->first_frame();
- save = true;
- }
- break;
-
- case EndOfIn:
- if (_position != _in->last_frame() - _length) {
- _position = _in->last_frame() - _length;
- save = true;
- }
- break;
-
- case EndOfOut:
- if (_position != _out->last_frame() - _length) {
- _position = _out->last_frame() - _length;
- save = true;
- }
- }
-
- if (save) {
- save_state ("updated");
- }
-
- /* UI's may need to know that the overlap changed even
- though the xfade length did not.
- */
-
- send_state_changed (BoundsChanged); /* EMIT SIGNAL */
-
- _in_update = false;
-
- return true;
-}
-
-void
-Crossfade::member_changed (Change what_changed)
-{
- Change what_we_care_about = Change (Region::MuteChanged|
- Region::LayerChanged|
- ARDOUR::BoundsChanged);
-
- if (what_changed & what_we_care_about) {
- refresh ();
- }
-}
-
-Change
-Crossfade::restore_state (StateManager::State& state)
-{
- CrossfadeState* xfstate = dynamic_cast<CrossfadeState*> (&state);
- Change what_changed = Change (0);
-
- _in_update = true;
-
- xfstate->fade_in_memento ();
- xfstate->fade_out_memento ();
-
- if (_length != xfstate->length) {
- what_changed = Change (what_changed|LengthChanged);
- _length = xfstate->length;
- }
- if (_active != xfstate->active) {
- what_changed = Change (what_changed|ActiveChanged);
- _active = xfstate->active;
- }
- if (_position != xfstate->position) {
- what_changed = Change (what_changed|PositionChanged);
- _position = xfstate->position;
- }
-
- /* XXX what to do about notifications for these? I don't
- think (G)UI cares about them because they are
- implicit in the bounds.
- */
-
- _follow_overlap = xfstate->follow_overlap;
- _anchor_point = xfstate->anchor_point;
-
- _in_update = false;
-
- return Change (what_changed);
-}
-
-StateManager::State*
-Crossfade::state_factory (std::string why) const
-{
- CrossfadeState* state = new CrossfadeState (why);
-
- state->fade_in_memento = _fade_in.get_memento ();
- state->fade_out_memento = _fade_out.get_memento ();
- state->active = _active;
- state->length = _length;
- state->position = _position;
- state->follow_overlap = _follow_overlap;
- state->anchor_point = _anchor_point;
-
- return state;
-}
-
-UndoAction
-Crossfade::get_memento() const
-{
- return sigc::bind (mem_fun (*(const_cast<Crossfade *> (this)), &StateManager::use_state), _current_state_id);
-}
-
XMLNode&
Crossfade::get_state ()
{
char buf[64];
LocaleGuard lg (X_("POSIX"));
- snprintf (buf, sizeof(buf), "%" PRIu64, _out->id());
+ _out->id().print (buf, sizeof (buf));
node->add_property ("out", buf);
- snprintf (buf, sizeof(buf), "%" PRIu64, _in->id());
+ _in->id().print (buf, sizeof (buf));
node->add_property ("in", buf);
node->add_property ("active", (_active ? "yes" : "no"));
node->add_property ("follow-overlap", (_follow_overlap ? "yes" : "no"));
pnode = new XMLNode ("point");
- snprintf (buf, sizeof (buf), "%" PRIu32, (jack_nframes_t) floor ((*ii)->when));
+ snprintf (buf, sizeof (buf), "%" PRIu32, (nframes_t) floor ((*ii)->when));
pnode->add_property ("x", buf);
- snprintf (buf, sizeof (buf), "%f", (*ii)->value);
+ snprintf (buf, sizeof (buf), "%.12g", (*ii)->value);
pnode->add_property ("y", buf);
child->add_child_nocopy (*pnode);
}
pnode = new XMLNode ("point");
- snprintf (buf, sizeof (buf), "%" PRIu32, (jack_nframes_t) floor ((*ii)->when));
+ snprintf (buf, sizeof (buf), "%" PRIu32, (nframes_t) floor ((*ii)->when));
pnode->add_property ("x", buf);
- snprintf (buf, sizeof (buf), "%f", (*ii)->value);
+ snprintf (buf, sizeof (buf), "%.12g", (*ii)->value);
pnode->add_property ("y", buf);
child->add_child_nocopy (*pnode);
}
XMLNode* fo;
const XMLProperty* prop;
LocaleGuard lg (X_("POSIX"));
+ Change what_changed = Change (0);
+ nframes_t val;
if ((prop = node.property ("position")) != 0) {
- _position = atoi (prop->value().c_str());
+ sscanf (prop->value().c_str(), "%" PRIu32, &val);
+ if (val != _position) {
+ _position = val;
+ what_changed = Change (what_changed | PositionChanged);
+ }
} else {
warning << _("old-style crossfade information - no position information") << endmsg;
_position = _in->first_frame();
}
if ((prop = node.property ("active")) != 0) {
- _active = (prop->value() == "yes");
+ bool x = (prop->value() == "yes");
+ if (x != _active) {
+ _active = x;
+ what_changed = Change (what_changed | ActiveChanged);
+ }
} else {
_active = true;
}
if ((prop = node.property ("length")) != 0) {
- _length = atol (prop->value().c_str());
+ sscanf (prop->value().c_str(), "%" PRIu32, &val);
+ if (val != _length) {
+ _length = atol (prop->value().c_str());
+ what_changed = Change (what_changed | LengthChanged);
+ }
} else {
/* fade in */
+ _fade_in.freeze ();
_fade_in.clear ();
children = fi->children();
for (i = children.begin(); i != children.end(); ++i) {
if ((*i)->name() == "point") {
- jack_nframes_t x;
+ nframes_t x;
float y;
prop = (*i)->property ("x");
_fade_in.add (x, y);
}
}
+
+ _fade_in.thaw ();
/* fade out */
+ _fade_out.freeze ();
_fade_out.clear ();
children = fo->children();
for (i = children.begin(); i != children.end(); ++i) {
if ((*i)->name() == "point") {
- jack_nframes_t x;
+ nframes_t x;
float y;
XMLProperty* prop;
}
}
+ _fade_out.thaw ();
+
+ StateChanged (what_changed); /* EMIT SIGNAL */
+
return 0;
}
} else {
set_length (_out->first_frame() + _out->length() - _in->first_frame());
}
+
+ StateChanged (FollowOverlapChanged);
}
-jack_nframes_t
-Crossfade::set_length (jack_nframes_t len)
+nframes_t
+Crossfade::set_length (nframes_t len)
{
- jack_nframes_t limit;
+ nframes_t limit;
switch (_anchor_point) {
case StartOfIn:
_length = len;
- save_state ("length changed");
-
- send_state_changed (LengthChanged);
+ StateChanged (LengthChanged);
return len;
}
-jack_nframes_t
+nframes_t
Crossfade::overlap_length () const
{
if (_fixed) {
}
void
-Crossfade::set_short_xfade_length (jack_nframes_t n)
+Crossfade::set_short_xfade_length (nframes_t n)
{
_short_xfade_length = n;
}
+
+void
+Crossfade::invalidate ()
+{
+ Invalidated (shared_from_this()); /* EMIT SIGNAL */
+}
projects / ardour.git / blobdiff