/*
- 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 <ardour/types.h>
-#include <ardour/crossfade.h>
-#include <ardour/crossfade_compare.h>
-#include <ardour/audioregion.h>
-#include <ardour/playlist.h>
-#include <ardour/utils.h>
-#include <ardour/session.h>
+#include "pbd/stacktrace.h"
+
+#include "ardour/types.h"
+#include "ardour/crossfade.h"
+#include "ardour/crossfade_compare.h"
+#include "ardour/audioregion.h"
+#include "ardour/playlist.h"
+#include "ardour/utils.h"
+#include "ardour/session.h"
+#include "ardour/source.h"
#include "i18n.h"
#include <locale.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;
- crossfade_buffer_out = 0;
- }
+ delete [] crossfade_buffer_out;
+ crossfade_buffer_out = 0;
- if (crossfade_buffer_in) {
- delete [] crossfade_buffer_in;
- crossfade_buffer_in = 0;
- }
+ delete [] crossfade_buffer_in;
+ crossfade_buffer_in = 0;
if (sz) {
crossfade_buffer_out = new Sample[sz];
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
+ : AudioRegion (in->session(), position, length, "foobar"),
+ _fade_in (Evoral::Parameter(FadeInAutomation)), // linear (gain coefficient) => -inf..+6dB
+ _fade_out (Evoral::Parameter(FadeOutAutomation)) // linear (gain coefficient) => -inf..+6dB
+
{
- _in = ∈
- _out = &out;
- _length = length;
- _position = position;
+ _in = in;
+ _out = out;
_anchor_point = ap;
_follow_overlap = false;
- _active = true;
+
+ _active = _session.config.get_xfades_active ();
_fixed = true;
-
+
initialize ();
}
-Crossfade::Crossfade (ARDOUR::AudioRegion& a, ARDOUR::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
+Crossfade::Crossfade (boost::shared_ptr<AudioRegion> a, boost::shared_ptr<AudioRegion> b, CrossfadeModel model, bool act)
+ : AudioRegion (a->session(), 0, 0, "foobar"),
+ _fade_in (Evoral::Parameter(FadeInAutomation)), // linear (gain coefficient) => -inf..+6dB
+ _fade_out (Evoral::Parameter(FadeOutAutomation)) // linear (gain coefficient) => -inf..+6dB
{
_in_update = false;
_fixed = false;
+ _follow_overlap = false;
if (compute (a, b, model)) {
throw failed_constructor();
_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
+ : AudioRegion (playlist.session(), 0, 0, "foobar"),
+ _fade_in (Evoral::Parameter(FadeInAutomation)), // linear (gain coefficient) => -inf..+6dB
+ _fade_out (Evoral::Parameter(FadeOutAutomation)) // 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 */
error << _("Crossfade: no \"in\" region in state") << endmsg;
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())
<< endmsg;
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();
}
_length = 0;
- initialize(false);
-
+ initialize();
+ _active = true;
+
if (set_state (node)) {
throw failed_constructor();
}
-
- save_state ("initial");
}
-Crossfade::~Crossfade ()
+Crossfade::Crossfade (boost::shared_ptr<Crossfade> orig, boost::shared_ptr<AudioRegion> newin, boost::shared_ptr<AudioRegion> newout)
+ : AudioRegion (boost::dynamic_pointer_cast<const AudioRegion> (orig)),
+ _fade_in (orig->_fade_in),
+ _fade_out (orig->_fade_out)
{
- for (StateMap::iterator i = states.begin(); i != states.end(); ++i) {
- delete *i;
- }
-}
+ _active = orig->_active;
+ _in_update = orig->_in_update;
+ _anchor_point = orig->_anchor_point;
+ _follow_overlap = orig->_follow_overlap;
+ _fixed = orig->_fixed;
-void
-Crossfade::initialize (bool savestate)
-{
+ _in = newin;
+ _out = newout;
+
+ // copied from Crossfade::initialize()
_in_update = false;
-
+
_out->suspend_fade_out ();
_in->suspend_fade_in ();
- _fade_out.freeze ();
- _fade_out.clear ();
- _fade_out.add (0.0, 1.0);
- _fade_out.add ((_length * 0.1), 0.99);
- _fade_out.add ((_length * 0.2), 0.97);
- _fade_out.add ((_length * 0.8), 0.03);
- _fade_out.add ((_length * 0.9), 0.01);
- _fade_out.add (_length, 0.0);
- _fade_out.thaw ();
-
- _fade_in.freeze ();
- _fade_in.clear ();
- _fade_in.add (0.0, 0.0);
- _fade_in.add ((_length * 0.1), 0.01);
- _fade_in.add ((_length * 0.2), 0.03);
- _fade_in.add ((_length * 0.8), 0.97);
- _fade_in.add ((_length * 0.9), 0.99);
- _fade_in.add (_length, 1.0);
- _fade_in.thaw ();
+ overlap_type = _in->coverage (_out->position(), _out->last_frame());
+ layer_relation = (int32_t) (_in->layer() - _out->layer());
-// _in->StateChanged.connect (slot (*this, &Crossfade::member_changed));
-// _out->StateChanged.connect (slot (*this, &Crossfade::member_changed));
+ // Let's make sure the fade isn't too long
+ set_xfade_length(_length);
+}
- overlap_type = _in->coverage (_out->position(), _out->last_frame());
- if (savestate) {
- save_state ("initial");
- }
-}
+Crossfade::~Crossfade ()
+{
+ notify_callbacks ();
+}
-int
-Crossfade::compute (AudioRegion& a, AudioRegion& b, CrossfadeModel model)
+void
+Crossfade::initialize ()
{
- AudioRegion* top;
- AudioRegion* bottom;
- jack_nframes_t short_xfade_length;
+ /* merge source lists from regions */
- short_xfade_length = _short_xfade_length;
+ _sources = _in->sources();
+ _sources.insert (_sources.end(), _out->sources().begin(), _out->sources().end());
+ _master_sources = _in->master_sources();
+ _master_sources.insert(_master_sources.end(), _out->master_sources().begin(), _out->master_sources().end());
- if (a.layer() < b.layer()) {
- top = &b;
- bottom = &a;
- } else {
- 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()) {
-
- /* top ends before bottom, so put an xfade
- in at the end of top.
- */
-
- /* [-------- top ---------- ]
- * {====== bottom =====================}
- */
+ _in_update = false;
- _in = bottom;
- _out = top;
+ _out->suspend_fade_out ();
+ _in->suspend_fade_in ();
- if (top->last_frame() < short_xfade_length) {
- _position = 0;
- } else {
- _position = top->last_frame() - short_xfade_length;
- }
+ _fade_out.freeze ();
+ _fade_out.clear ();
- _length = min (short_xfade_length, top->length());
- _follow_overlap = false;
- _anchor_point = EndOfIn;
- _active = true;
- _fixed = true;
+#define EQUAL_POWER_MINUS_3DB
+#ifdef EQUAL_POWER_MINUS_3DB
- } else {
- /* top ends after (or same time) as bottom - no xfade
- */
-
- /* [-------- top ------------------------ ]
- * {====== bottom =====================}
- */
+ _fade_out.add ((_length * 0.000000), 1.000000);
+ _fade_out.add ((_length * 0.166667), 0.948859);
+ _fade_out.add ((_length * 0.333333), 0.851507);
+ _fade_out.add ((_length * 0.500000), 0.707946);
+ _fade_out.add ((_length * 0.666667), 0.518174);
+ _fade_out.add ((_length * 0.833333), 0.282192);
+ _fade_out.add ((_length * 1.000000), 0.000000);
- throw NoCrossfadeHere();
- }
-
- } else if (top->last_frame() == bottom->last_frame()) {
-
- /* Both regions end at the same point */
-
- if (top->first_frame() > bottom->first_frame()) {
-
- /* top starts after bottom, put an xfade in at the
- start of top
- */
-
- /* [-------- top ---------- ]
- * {====== bottom =====================}
- */
+#else // EQUAL_POWER_MINUS_6DB
- _in = top;
- _out = bottom;
- _position = top->first_frame();
- _length = min (short_xfade_length, top->length());
- _follow_overlap = false;
- _anchor_point = StartOfIn;
- _active = true;
- _fixed = true;
-
- } else {
- /* top starts before bottom - no xfade
- */
+ _fade_out.add ((_length * 0.000000), 1.000000);
+ _fade_out.add ((_length * 0.166667), 0.833033);
+ _fade_out.add ((_length * 0.333333), 0.666186);
+ _fade_out.add ((_length * 0.500000), 0.499459);
+ _fade_out.add ((_length * 0.666667), 0.332853);
+ _fade_out.add ((_length * 0.833333), 0.166366);
+ _fade_out.add ((_length * 1.000000), 0.000000);
+#endif
- /* [-------- top ------------------------ ]
- * {====== bottom =====================}
- */
+ _fade_out.thaw ();
- throw NoCrossfadeHere();
- }
+ _fade_in.freeze ();
+ _fade_in.clear ();
- } else {
-
- /* OK, time to do more regular overlapping */
+#define EQUAL_POWER_MINUS_3DB
+#ifdef EQUAL_POWER_MINUS_3DB
- OverlapType ot = top->coverage (bottom->first_frame(), bottom->last_frame());
+ _fade_in.add ((_length * 0.000000), 0.000000);
+ _fade_in.add ((_length * 0.166667), 0.282192);
+ _fade_in.add ((_length * 0.333333), 0.518174);
+ _fade_in.add ((_length * 0.500000), 0.707946);
+ _fade_in.add ((_length * 0.666667), 0.851507);
+ _fade_in.add ((_length * 0.833333), 0.948859);
+ _fade_in.add ((_length * 1.000000), 1.000000);
- switch (ot) {
- case OverlapNone:
- /* should be NOTREACHED as a precondition of creating
- a new crossfade, but we need to handle it here.
- */
- throw NoCrossfadeHere();
- break;
-
- case OverlapInternal:
- case OverlapExternal:
- /* should be NOTREACHED because of tests above */
- throw NoCrossfadeHere();
- break;
-
- case OverlapEnd: /* top covers start of bottom but ends within it */
+#else // EQUAL_POWER_MINUS_SIX_DB
- /* [---- top ------------------------]
- * { ==== bottom ============ }
- */
+ _fade_in.add ((_length * 0.000000), 0.000000);
+ _fade_in.add ((_length * 0.166667), 0.166366);
+ _fade_in.add ((_length * 0.333333), 0.332853);
+ _fade_in.add ((_length * 0.500000), 0.499459);
+ _fade_in.add ((_length * 0.666667), 0.666186);
+ _fade_in.add ((_length * 0.833333), 0.833033);
+ _fade_in.add ((_length * 1.000000), 1.000000);
- _in = bottom;
- _out = top;
- _position = bottom->first_frame();
- _anchor_point = StartOfIn;
+#endif
- if (model == FullCrossfade) {
- _length = _out->first_frame() + _out->length() - _in->first_frame();
- /* leave active alone */
- _follow_overlap = true;
- } else {
- _length = min (short_xfade_length, top->length());
- _active = true;
- _follow_overlap = false;
-
- }
- break;
-
- case OverlapStart: /* top starts within bottom but covers bottom's end */
+ _fade_in.thaw ();
- /* { ==== top ============ }
- * [---- bottom -------------------]
- */
+ overlap_type = _in->coverage (_out->position(), _out->last_frame());
+ layer_relation = (int32_t) (_in->layer() - _out->layer());
+}
- _in = top;
- _out = bottom;
- _position = top->first_frame();
- _anchor_point = StartOfIn;
+nframes_t
+Crossfade::read_raw_internal (Sample* /*buf*/, sframes_t /*start*/, nframes_t cnt, int /*channel*/) const
+{
+ // FIXME: Why is this disabled?
+#if 0
+ Sample* mixdown = new Sample[cnt];
+ float* gain = new float[cnt];
+ nframes_t ret;
- if (model == FullCrossfade) {
- _length = _out->first_frame() + _out->length() - _in->first_frame();
- /* leave active alone */
- _follow_overlap = true;
- } else {
- _length = min (short_xfade_length, top->length());
- _active = true;
- _follow_overlap = false;
-
- }
-
- break;
- }
- }
-
- return 0;
+ ret = read_at (buf, mixdown, gain, start, cnt, chan_n, cnt);
+
+ delete [] mixdown;
+ delete [] gain;
+
+ return ret;
+#endif
+ return cnt;
}
-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)
+nframes_t
+Crossfade::read_at (Sample *buf, Sample *mixdown_buffer,
+ float *gain_buffer, sframes_t start, nframes_t cnt, uint32_t chan_n,
+ nframes_t read_frames, nframes_t skip_frames) const
{
- jack_nframes_t offset;
- jack_nframes_t to_write;
+ nframes_t offset;
+ nframes_t to_write;
if (!_active) {
return 0;
} else {
return 0;
}
-
+
start = _position;
buf += offset;
to_write = min (_length, cnt);
} else {
-
- to_write = min (_length - (start - _position), cnt);
-
+
+ to_write = min (nframes_t(_length - (start - _position)), cnt);
+
}
offset = start - _position;
+ /* Prevent data from piling up inthe crossfade buffers when reading a transparent region */
+ if (!(_out->opaque())) {
+ memset (crossfade_buffer_out, 0, sizeof (Sample) * to_write);
+ } else if (!(_in->opaque())) {
+ memset (crossfade_buffer_in, 0, sizeof (Sample) * to_write);
+ }
+
_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);
+ _fade_in.curve().get_vector (offset, offset+to_write, fiv, to_write);
+ _fade_out.curve().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.
+ position and length, and so we know precisely how much data they could return.
*/
- for (jack_nframes_t n = 0; n < to_write; ++n) {
+ for (nframes_t n = 0; n < to_write; ++n) {
buf[n] = (crossfade_buffer_out[n] * fov[n]) + (crossfade_buffer_in[n] * fiv[n]);
}
delete [] fiv;
return to_write;
-}
+}
-OverlapType
-Crossfade::coverage (jack_nframes_t start, jack_nframes_t end) const
+OverlapType
+Crossfade::coverage (nframes_t start, nframes_t end) const
{
- jack_nframes_t my_end = _position + _length;
+ nframes_t my_end = _position + _length;
if ((start >= _position) && (end <= my_end)) {
return OverlapInternal;
{
if (_active != yn) {
_active = yn;
- save_state (_("active changed"));
- send_state_changed (ActiveChanged);
+ StateChanged (ActiveChanged);
}
}
Crossfade::refresh ()
{
/* crossfades must be between non-muted regions */
-
+
if (_out->muted() || _in->muted()) {
- Invalidated (this);
+ Invalidated (shared_from_this ());
return false;
}
- /* overlap type must be Start, End or External */
+ /* Top layer shouldn't be transparent */
- OverlapType ot;
-
- ot = _in->coverage (_out->first_frame(), _out->last_frame());
-
- switch (ot) {
- case OverlapNone:
- case OverlapInternal:
- Invalidated (this);
+ if (!((layer_relation > 0 ? _in : _out)->opaque())) {
+ Invalidated (shared_from_this());
return false;
-
- default:
- break;
}
-
- /* overlap type must not have altered */
-
- if (ot != overlap_type) {
- Invalidated (this);
+
+ /* 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, _session.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 */
+ }
- /* time to update */
+ _in_update = false;
- return update (false);
+ return true;
}
bool
-Crossfade::update (bool force)
+Crossfade::update ()
{
- jack_nframes_t newlen;
- bool save = false;
+ nframes_t newlen;
if (_follow_overlap) {
newlen = _out->first_frame() + _out->length() - _in->first_frame();
}
if (newlen == 0) {
- Invalidated (this);
+ Invalidated (shared_from_this ());
return false;
}
_in_update = true;
- if (force || (_follow_overlap && newlen != _length) || (_length > newlen)) {
+ if ((_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;
- }
+ _length = newlen;
+ }
switch (_anchor_point) {
case StartOfIn:
- if (_position != _in->first_frame()) {
- _position = _in->first_frame();
- save = true;
- }
+ _position = _in->first_frame();
break;
case EndOfIn:
- if (_position != _in->last_frame() - _length) {
- _position = _in->last_frame() - _length;
- save = true;
- }
+ _position = _in->last_frame() - _length;
break;
case EndOfOut:
- if (_position != _out->last_frame() - _length) {
- _position = _out->last_frame() - _length;
- save = true;
- }
+ _position = _out->last_frame() - _length;
}
- 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)
+int
+Crossfade::compute (boost::shared_ptr<AudioRegion> a, boost::shared_ptr<AudioRegion> b, CrossfadeModel model)
{
- Change what_we_care_about = Change (Region::MuteChanged|
- Region::LayerChanged|
- ARDOUR::BoundsChanged);
+ boost::shared_ptr<AudioRegion> top;
+ boost::shared_ptr<AudioRegion> bottom;
+ nframes_t short_xfade_length;
+
+ short_xfade_length = _short_xfade_length;
- if (what_changed & what_we_care_about) {
- refresh ();
+ if (a->layer() < b->layer()) {
+ top = b;
+ bottom = a;
+ } else {
+ top = a;
+ bottom = b;
}
-}
-Change
-Crossfade::restore_state (StateManager::State& state)
-{
- CrossfadeState* xfstate = dynamic_cast<CrossfadeState*> (&state);
- Change what_changed = Change (0);
+ /* first check for matching ends */
- _in_update = true;
-
- xfstate->fade_in_memento ();
- xfstate->fade_out_memento ();
+ if (top->first_frame() == bottom->first_frame()) {
- 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;
- }
+ /* Both regions start at the same point */
- /* XXX what to do about notifications for these? I don't
- think (G)UI cares about them because they are
- implicit in the bounds.
- */
+ if (top->last_frame() < bottom->last_frame()) {
- _follow_overlap = xfstate->follow_overlap;
- _anchor_point = xfstate->anchor_point;
+ /* top ends before bottom, so put an xfade
+ in at the end of top.
+ */
- _in_update = false;
+ /* [-------- top ---------- ]
+ * {====== bottom =====================}
+ */
- return Change (what_changed);
-}
+ _in = bottom;
+ _out = top;
-StateManager::State*
-Crossfade::state_factory (std::string why) const
-{
- CrossfadeState* state = new CrossfadeState (why);
+ if (top->last_frame() < short_xfade_length) {
+ _position = 0;
+ } else {
+ _position = top->last_frame() - short_xfade_length;
+ }
+
+ _length = min (short_xfade_length, top->length());
+ _follow_overlap = false;
+ _anchor_point = EndOfIn;
+ _active = true;
+ _fixed = true;
- 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;
+ } else {
+ /* top ends after (or same time) as bottom - no xfade
+ */
- return state;
-}
-
-UndoAction
-Crossfade::get_memento() const
-{
- return sigc::bind (mem_fun (*(const_cast<Crossfade *> (this)), &StateManager::use_state), _current_state_id);
+ /* [-------- top ------------------------ ]
+ * {====== bottom =====================}
+ */
+
+ throw NoCrossfadeHere();
+ }
+
+ } else if (top->last_frame() == bottom->last_frame()) {
+
+ /* Both regions end at the same point */
+
+ if (top->first_frame() > bottom->first_frame()) {
+
+ /* top starts after bottom, put an xfade in at the
+ start of top
+ */
+
+ /* [-------- top ---------- ]
+ * {====== bottom =====================}
+ */
+
+ _in = top;
+ _out = bottom;
+ _position = top->first_frame();
+ _length = min (short_xfade_length, top->length());
+ _follow_overlap = false;
+ _anchor_point = StartOfIn;
+ _active = true;
+ _fixed = true;
+
+ } else {
+ /* top starts before bottom - no xfade
+ */
+
+ /* [-------- top ------------------------ ]
+ * {====== bottom =====================}
+ */
+
+ throw NoCrossfadeHere();
+ }
+
+ } else {
+
+ /* OK, time to do more regular overlapping */
+
+ OverlapType ot = top->coverage (bottom->first_frame(), bottom->last_frame());
+
+ switch (ot) {
+ case OverlapNone:
+ /* should be NOTREACHED as a precondition of creating
+ a new crossfade, but we need to handle it here.
+ */
+ throw NoCrossfadeHere();
+ break;
+
+ case OverlapInternal:
+ case OverlapExternal:
+ /* should be NOTREACHED because of tests above */
+ throw NoCrossfadeHere();
+ break;
+
+ case OverlapEnd: /* top covers start of bottom but ends within it */
+
+ /* [---- top ------------------------]
+ * { ==== bottom ============ }
+ */
+
+ _in = bottom;
+ _out = top;
+ _anchor_point = EndOfOut;
+
+ 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;
+
+ }
+ break;
+
+ case OverlapStart: /* top starts within bottom but covers bottom's end */
+
+ /* { ==== top ============ }
+ * [---- bottom -------------------]
+ */
+
+ _in = top;
+ _out = bottom;
+ _position = top->first_frame();
+ _anchor_point = StartOfIn;
+
+ if (model == FullCrossfade) {
+ _length = _out->first_frame() + _out->length() - _in->first_frame();
+ /* leave active alone */
+ _follow_overlap = true;
+ } else {
+ _length = min (short_xfade_length, top->length());
+ _active = true;
+ _follow_overlap = false;
+
+ }
+
+ break;
+ }
+ }
+
+ return 0;
}
XMLNode&
-Crossfade::get_state ()
+Crossfade::get_state ()
{
XMLNode* node = new XMLNode (X_("Crossfade"));
XMLNode* child;
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 = string_is_affirmative (prop->value());
+ if (x != _active) {
+ _active = x;
+ what_changed = Change (what_changed | ActiveChanged);
+ }
} else {
_active = true;
}
if ((prop = node.property ("follow-overlap")) != 0) {
- _follow_overlap = (prop->value() == "yes");
+ _follow_overlap = string_is_affirmative (prop->value());
} else {
_follow_overlap = false;
}
if ((prop = node.property ("fixed")) != 0) {
- _fixed = (prop->value() == "yes");
+ _fixed = string_is_affirmative (prop->value());
} else {
_fixed = false;
}
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 {
-
+
/* XXX this branch is legacy code from before
the point where we stored xfade lengths.
*/
-
+
if ((_length = overlap_length()) == 0) {
throw failed_constructor();
}
if ((fi = find_named_node (node, "FadeIn")) == 0) {
return -1;
}
-
+
if ((fo = find_named_node (node, "FadeOut")) == 0) {
return -1;
}
/* 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");
sscanf (prop->value().c_str(), "%" PRIu32, &x);
-
+
prop = (*i)->property ("y");
sscanf (prop->value().c_str(), "%f", &y);
_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;
prop = (*i)->property ("y");
sscanf (prop->value().c_str(), "%f", &y);
-
+
_fade_out.add (x, y);
}
}
+ _fade_out.thaw ();
+
+ StateChanged (what_changed); /* EMIT SIGNAL */
+
return 0;
}
_follow_overlap = yn;
if (!yn) {
- set_length (_short_xfade_length);
+ set_xfade_length (_short_xfade_length);
} else {
- set_length (_out->first_frame() + _out->length() - _in->first_frame());
+ set_xfade_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_xfade_length (nframes_t len)
{
- jack_nframes_t limit;
+ nframes_t limit = 0;
switch (_anchor_point) {
case StartOfIn:
case EndOfOut:
limit = _out->length();
break;
-
+
}
len = min (limit, len);
_fade_out.x_scale (factor);
_fade_in.x_scale (factor);
_in_update = false;
-
- _length = len;
- save_state ("length changed");
+ _length = len;
- 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;
}
projects / ardour.git / blobdiff