#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;
+ }
+}
+
+static const double VERY_SMALL_SIGNAL = 0.0000001; //-140dB
+
+/* Curve manipulations */
+
+static void
+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_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
+ for (Evoral::ControlList::const_iterator it = src->begin(); it!=src->end(); ++it ) {
+ float value = (*it)->value;
+ value = 1 - powf(value,2);
+ value = sqrtf(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
+ float fade_speed = dB_to_coefficient(dB_drop / (float) num_steps);
+ for (int i = 1; i < (num_steps-1); i++) {
+ float coeff = 1.0;
+ for (int j = 0; j < i; j++) {
+ coeff *= fade_speed;
+ }
+ dst->fast_simple_add (len*(double)i/(double)num_steps, coeff);
+ }
+
+ dst->fast_simple_add (len, VERY_SMALL_SIGNAL);
+}
+
+static void
+merge_curves (boost::shared_ptr<Evoral::ControlList> dst,
+ boost::shared_ptr<const Evoral::ControlList> curve1,
+ boost::shared_ptr<const Evoral::ControlList> curve2)
+{
+ Evoral::ControlList::EventList::size_type size = curve1->size();
+
+ //curve lengths must match for now
+ if (size != curve2->size()) {
+ return;
+ }
+
+ Evoral::ControlList::const_iterator c1 = curve1->begin();
+ int count = 0;
+ for (Evoral::ControlList::const_iterator c2 = curve2->begin(); c2!=curve2->end(); c2++ ) {
+ float v1 = accurate_coefficient_to_dB((*c1)->value);
+ float v2 = accurate_coefficient_to_dB((*c2)->value);
+
+ double interp = v1 * ( 1.0-( (double)count / (double)size) );
+ interp += v2 * ( (double)count / (double)size );
+
+ interp = dB_to_coefficient(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)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
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)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other)
: Region (other)
, 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, 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)
{
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))
- , _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))
+ , _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)
{
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))
- , _fade_out (new AutomationList (*other->_fade_out))
- , _envelope (new AutomationList (*other->_envelope))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
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)))
- , _fade_out (new AutomationList(Evoral::Parameter(FadeOutAutomation)))
- , _envelope (new AutomationList(Evoral::Parameter(EnvelopeAutomation)))
, _fade_in_suspended (0)
, _fade_out_suspended (0)
{
}
}
+/** @param buf Buffer to put peak data in.
+ * @param npeaks Number of peaks to read (ie the number of PeakDatas in buf)
+ * @param offset Start position, as an offset from the start of this region's source.
+ * @param cnt Number of samples to read.
+ * @param chan_n Channel.
+ * @param frames_per_pixel Number of samples to use to generate one peak value.
+ */
+
ARDOUR::framecnt_t
-AudioRegion::read_peaks (PeakData *buf, framecnt_t npeaks, framecnt_t offset, framecnt_t cnt, uint32_t chan_n, double samples_per_unit) const
+AudioRegion::read_peaks (PeakData *buf, framecnt_t npeaks, framecnt_t offset, framecnt_t cnt, uint32_t chan_n, double frames_per_pixel) const
{
if (chan_n >= _sources.size()) {
return 0;
}
- if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) {
+ if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, frames_per_pixel)) {
return 0;
} else {
if (_scale_amplitude != 1.0f) {
}
}
+/** @param buf Buffer to write data to (existing data will be overwritten).
+ * @param pos Position to read from as an offset from the region position.
+ * @param cnt Number of frames to read.
+ * @param channel Channel to read from.
+ */
framecnt_t
-AudioRegion::read (Sample* buf, framepos_t timeline_position, framecnt_t cnt, int channel) const
+AudioRegion::read (Sample* buf, framepos_t pos, framecnt_t cnt, int channel) const
{
/* raw read, no fades, no gain, nada */
- /* XXX: xfade: passes no mixbuf... */
- return _read_at (_sources, _length, buf, 0, 0, _position + timeline_position, cnt, channel, ReadOps (0));
+ return read_from_sources (_sources, _length, buf, _position + pos, cnt, channel);
}
framecnt_t
-AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
- framepos_t position, framecnt_t cnt, uint32_t chan_n) const
-{
- /* regular diskstream/butler read complete with fades etc */
- return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer,
- position, cnt, chan_n, ReadOps (~0));
-}
-
-framecnt_t
-AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
+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 */
assert (cnt >= 0);
-
- return _read_at (_master_sources, _master_sources.front()->length(_master_sources.front()->timeline_position()),
- buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, ReadOps (0));
+ return read_from_sources (
+ _master_sources, _master_sources.front()->length (_master_sources.front()->timeline_position()),
+ buf, position, cnt, chan_n
+ );
}
-/** @param position Position within the session to read from.
+/** @param buf Buffer to mix data into.
+ * @param mixdown_buffer Scratch buffer for audio data.
+ * @param gain_buffer Scratch buffer for gain data.
+ * @param position Position within the session to read from.
* @param cnt Number of frames to read.
+ * @param chan_n Channel number to read.
*/
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,
- ReadOps rops) const
+AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer,
+ framepos_t position,
+ framecnt_t cnt,
+ uint32_t chan_n) const
{
/* We are reading data from this region into buf (possibly via mixdown_buffer).
The caller has verified that we cover the desired section.
return 0;
}
- if (muted() && rops != ReadOpsNone) {
- return 0; /* read nothing */
- }
-
-
/* WORK OUT WHERE TO GET DATA FROM */
framecnt_t to_read;
assert (position >= _position);
frameoffset_t const internal_offset = position - _position;
- if (internal_offset >= limit) {
+ if (internal_offset >= _length) {
return 0; /* read nothing */
}
- if ((to_read = min (cnt, limit - internal_offset)) == 0) {
+ if ((to_read = min (cnt, _length - internal_offset)) == 0) {
return 0; /* read nothing */
}
/* 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 (rops & ReadOpsFades) {
-
- /* Fade in */
+ /* Fade in */
+
+ if (_fade_in_active && _session.config.get_use_region_fades()) {
- if (_fade_in_active && _session.config.get_use_region_fades()) {
+ framecnt_t fade_in_length = (framecnt_t) _fade_in->back()->when;
- 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) {
- fade_in_limit = min (to_read, fade_in_length - internal_offset);
- }
+ /* see if this read is within the fade in */
+
+ if (internal_offset < fade_in_length) {
+ fade_in_limit = min (to_read, fade_in_length - internal_offset);
}
-
- /* Fade out */
-
- if (_fade_out_active && _session.config.get_use_region_fades()) {
-
- /* see if some part of this read is within the fade out */
+ }
+
+ /* 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
+ _length
{ } FADE
fade_out_length
^
- limit - fade_out_length
+ _length - 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]
+ [_length - fade_out_length, _length]
*/
- fade_interval_start = max (internal_offset, limit - framecnt_t (_fade_out->back()->when));
- framecnt_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 */
- fade_out_limit = fade_interval_end - fade_interval_start;
- fade_out_offset = fade_interval_start - internal_offset;
- }
+ fade_interval_start = max (internal_offset, _length - framecnt_t (_fade_out->back()->when));
+ framecnt_t fade_interval_end = min(internal_offset + to_read, _length.val());
+
+ if (fade_interval_end > fade_interval_start) {
+ /* (part of the) the fade out is in this buffer */
+ fade_out_limit = fade_interval_end - fade_interval_start;
+ fade_out_offset = fade_interval_start - internal_offset;
}
}
/* 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 (chan_n < n_channels()) {
-
- boost::shared_ptr<AudioSource> src = boost::dynamic_pointer_cast<AudioSource> (srcs[chan_n]);
- if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
- return 0; /* "read nothing" */
- }
-
- } else {
-
- /* track is N-channel, this region has fewer 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 = boost::dynamic_pointer_cast<AudioSource> (srcs[channel]);
-
- if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) {
- return 0; /* "read nothing" */
- }
- }
+ if (read_from_sources (_sources, _length, mixdown_buffer, position, to_read, chan_n) != to_read) {
+ return 0;
}
/* APPLY REGULAR GAIN CURVES AND SCALING TO mixdown_buffer */
- if ((rops & ReadOpsOwnAutomation) && envelope_active()) {
+ if (envelope_active()) {
_envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read);
- if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
+ if (_scale_amplitude != 1.0f) {
for (framecnt_t n = 0; n < to_read; ++n) {
mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude;
}
mixdown_buffer[n] *= gain_buffer[n];
}
}
- } else if ((rops & ReadOpsOwnScaling) && _scale_amplitude != 1.0f) {
+ } else if (_scale_amplitude != 1.0f) {
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 (fade_in_limit != 0) {
- _fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
- /* Fade the current data out */
- for (framecnt_t n = 0; n < fade_in_limit; ++n) {
- buf[n] *= 1 - gain_buffer[n];
+ if (opaque()) {
+ if (_inverse_fade_in) {
+
+ /* explicit inverse fade in curve (e.g. for constant
+ * power), so we have to fetch it.
+ */
+
+ _inverse_fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
+
+ /* Fade the data from lower layers out */
+ for (framecnt_t n = 0; n < fade_in_limit; ++n) {
+ buf[n] *= gain_buffer[n];
+ }
+
+ /* refill gain buffer with the fade in */
+
+ _fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
+
+ } else {
+
+ /* no explicit inverse fade in, so just use (1 - fade
+ * in) for the fade out of lower layers
+ */
+
+ _fade_in->curve().get_vector (internal_offset, internal_offset + fade_in_limit, gain_buffer, fade_in_limit);
+
+ for (framecnt_t n = 0; n < fade_in_limit; ++n) {
+ buf[n] *= 1 - gain_buffer[n];
+ }
+ }
+ } else {
+ _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 */
}
if (fade_out_limit != 0) {
- framecnt_t const curve_offset = fade_interval_start - (limit - _fade_out->back()->when);
- _fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
- /* Fade the current data in */
- for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
- buf[m] *= 1 - gain_buffer[n];
+ framecnt_t const curve_offset = fade_interval_start - (_length - _fade_out->back()->when);
+
+ if (opaque()) {
+ if (_inverse_fade_out) {
+
+ _inverse_fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
+
+ /* 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 (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);
+
+ for (framecnt_t n = 0, m = fade_out_offset; n < fade_out_limit; ++n, ++m) {
+ buf[m] *= 1 - gain_buffer[n];
+ }
+ }
+ } else {
+ _fade_out->curve().get_vector (curve_offset, curve_offset + fade_out_limit, gain_buffer, fade_out_limit);
}
- /* Mix our newly-read data in, 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 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;
+}
+
+/** Read data directly from one of our sources, accounting for the situation when the track has a different channel
+ * count to the region.
+ *
+ * @param srcs Source list to get our source from.
+ * @param limit Furthest that we should read, as an offset from the region position.
+ * @param buf Buffer to write data into (existing contents of the buffer will be overwritten)
+ * @param position Position to read from, in session frames.
+ * @param cnt Number of frames to read.
+ * @param chan_n Channel to read from.
+ * @return Number of frames read.
+ */
+
+framecnt_t
+AudioRegion::read_from_sources (SourceList const & srcs, framecnt_t limit, Sample* buf, framepos_t position, framecnt_t cnt, uint32_t chan_n) const
+{
+ frameoffset_t const internal_offset = position - _position;
+ if (internal_offset >= limit) {
+ return 0;
+ }
+ framecnt_t const to_read = min (cnt, limit - internal_offset);
+ if (to_read == 0) {
+ return 0;
+ }
- /* MIX THE REGION BODY FROM mixdown_buffer INTO buf */
+ if (chan_n < n_channels()) {
- mix_buffers_no_gain (buf + fade_in_limit, mixdown_buffer + fade_in_limit, to_read - fade_in_limit - fade_out_limit);
+ boost::shared_ptr<AudioSource> src = boost::dynamic_pointer_cast<AudioSource> (srcs[chan_n]);
+ if (src->read (buf, _start + internal_offset, to_read) != to_read) {
+ return 0; /* "read nothing" */
+ }
+
+ } else {
+
+ /* track is N-channel, this region has fewer channels; silence the ones
+ we don't have.
+ */
+
+ if (Config->get_replicate_missing_region_channels()) {
+
+ /* copy an existing channel's data in for this non-existant one */
+
+ uint32_t channel = chan_n % n_channels();
+ 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);
+ }
+ }
return 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->add_child_nocopy (_fade_in->get_state ());
}
+ if (_inverse_fade_in) {
+ child = node.add_child (X_("InverseFadeIn"));
+ child->add_child_nocopy (_inverse_fade_in->get_state ());
+ }
+
child = node.add_child (X_("FadeOut"));
if (_default_fade_out) {
child->add_child_nocopy (_fade_out->get_state ());
}
+ if (_inverse_fade_out) {
+ child = node.add_child (X_("InverseFadeOut"));
+ child->add_child_nocopy (_inverse_fade_out->get_state ());
+ }
+
return node;
}
_fade_in->clear ();
- if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
+ if (((prop = child->property ("default")) != 0 && string_is_affirmative (prop->value())) || (prop = child->property ("steepness")) != 0) {
set_default_fade_in ();
} else {
XMLNode* grandchild = child->child ("AutomationList");
_fade_out->clear ();
- if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) {
+ if (((prop = child->property ("default")) != 0 && (string_is_affirmative (prop->value()))) || (prop = child->property ("steepness")) != 0) {
set_default_fade_out ();
} else {
XMLNode* grandchild = child->child ("AutomationList");
_fade_out->set_state (*grandchild, version);
}
}
-
+
if ((prop = child->property ("active")) != 0) {
if (string_is_affirmative (prop->value())) {
set_fade_out_active (true);
set_fade_out_active (false);
}
}
-
+
+ } else if (child->name() == "InverseFadeIn") {
+ XMLNode* grandchild = child->child ("AutomationList");
+ if (grandchild) {
+ _inverse_fade_in->set_state (*grandchild, version);
+ }
+ } 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;
send_change (PropertyChange (Properties::fade_in));
}
void
AudioRegion::set_fade_in (FadeShape shape, framecnt_t len)
{
+ boost::shared_ptr<Evoral::ControlList> c1 (new Evoral::ControlList (FadeInAutomation));
+ boost::shared_ptr<Evoral::ControlList> c2 (new Evoral::ControlList (FadeInAutomation));
+ boost::shared_ptr<Evoral::ControlList> c3 (new Evoral::ControlList (FadeInAutomation));
+
_fade_in->freeze ();
_fade_in->clear ();
+ _inverse_fade_in->clear ();
switch (shape) {
case FadeLinear:
_fade_in->fast_simple_add (0.0, 0.0);
_fade_in->fast_simple_add (len, 1.0);
+ reverse_curve (_inverse_fade_in.val(), _fade_in.val());
break;
case FadeFast:
- _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);
+ 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.val(), _fade_in.val());
break;
case FadeSlow:
- _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);
+ 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.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 FadeLogA:
- _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);
+ case FadeConstantPower:
+ for (int i = 0; i < 9; ++i) {
+ float dist = (float) i / 10.0f;
+ _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.val(), _fade_in.val());
break;
-
- case FadeLogB:
- _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);
+
+ case FadeSymmetric:
+ //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);
+ }
+ _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;
}
+ _default_fade_in = false;
_fade_in->thaw ();
send_change (PropertyChange (Properties::fade_in));
}
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;
send_change (PropertyChange (Properties::fade_in));
}
void
AudioRegion::set_fade_out (FadeShape shape, framecnt_t len)
{
+ boost::shared_ptr<Evoral::ControlList> c1 (new Evoral::ControlList (FadeOutAutomation));
+ boost::shared_ptr<Evoral::ControlList> c2 (new Evoral::ControlList (FadeOutAutomation));
+
_fade_out->freeze ();
_fade_out->clear ();
+ _inverse_fade_out->clear ();
switch (shape) {
- case FadeFast:
- _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);
+ 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.val(), _fade_out.val());
break;
-
- case FadeLogA:
- _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);
+
+ case FadeFast:
+ generate_db_fade (_fade_out.val(), len, 10, -60);
+ generate_inverse_power_curve (_inverse_fade_out.val(), _fade_out.val());
break;
-
- case FadeSlow:
- _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);
+
+ 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.val(), c1, c2);
+ generate_inverse_power_curve (_inverse_fade_out.val(), _fade_out.val());
break;
- case FadeLogB:
- _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);
+ case FadeConstantPower:
+ //constant-power fades use a sin/cos relationship
+ //the cutoff is abrupt but it has the benefit of being symmetrical
+ _fade_out->fast_simple_add (0.0, 1.0);
+ for (int i = 1; i < 9; i++ ) {
+ float dist = (float)i/10.0;
+ _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.val(), _fade_out.val());
break;
-
- case FadeLinear:
- _fade_out->fast_simple_add (len * 0, 1);
- _fade_out->fast_simple_add (len * 1, 0);
+
+ case FadeSymmetric:
+ //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);
+ }
+ _fade_out->fast_simple_add (len, VERY_SMALL_SIGNAL);
+ reverse_curve (_inverse_fade_out.val(), _fade_out.val());
break;
}
+ _default_fade_out = false;
_fade_out->thaw ();
- send_change (PropertyChange (Properties::fade_in));
+ send_change (PropertyChange (Properties::fade_out));
}
void
if (len > _length) {
len = _length - 1;
}
+
+ if (len < 64) {
+ len = 64;
+ }
bool changed = _fade_in->extend_to (len);
if (changed) {
+ if (_inverse_fade_in) {
+ _inverse_fade_in->extend_to (len);
+ }
+
_default_fade_in = false;
send_change (PropertyChange (Properties::fade_in));
}
len = _length - 1;
}
+ if (len < 64) {
+ len = 64;
+ }
+
bool changed = _fade_out->extend_to (len);
if (changed) {
+
+ if (_inverse_fade_out) {
+ _inverse_fade_out->extend_to (len);
+ }
_default_fade_out = false;
+
send_change (PropertyChange (Properties::fade_out));
}
}
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);
+ return Evoral::Range<framepos_t> (first_frame() + _fade_in->back()->when + 1, last_frame() - _fade_out->back()->when);
}
-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)
+boost::shared_ptr<Region>
+AudioRegion::get_single_other_xfade_region (bool start) const
{
- return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (framecnt_t) npeaks, (framepos_t) start, (framecnt_t) cnt, n_chan,samples_per_unit);
-}
+ boost::shared_ptr<Playlist> pl (playlist());
-uint32_t region_length_from_c (void *arg)
-{
+ if (!pl) {
+ /* not currently in a playlist - xfade length is unbounded
+ (and irrelevant)
+ */
+ return boost::shared_ptr<AudioRegion> ();
+ }
+
+ boost::shared_ptr<RegionList> rl;
+
+ if (start) {
+ rl = pl->regions_at (position());
+ } else {
+ rl = pl->regions_at (last_frame());
+ }
+
+ RegionList::iterator i;
+ boost::shared_ptr<Region> other;
+ uint32_t n = 0;
+
+ /* count and find the other region in a single pass through the list */
+
+ for (i = rl->begin(); i != rl->end(); ++i) {
+ if ((*i).get() != this) {
+ other = *i;
+ }
+ ++n;
+ }
+
+ if (n != 2) {
+ /* zero or multiple regions stacked here - don't care about xfades */
+ return boost::shared_ptr<AudioRegion> ();
+ }
- return ((AudioRegion *) arg)->length();
+ return other;
}
-uint32_t sourcefile_length_from_c (void *arg, double zoom_factor)
+framecnt_t
+AudioRegion::verify_xfade_bounds (framecnt_t len, bool start)
{
- return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ;
+ /* 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, 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
+ the maximum possible duration of the overlap (if the other
+ region were trimmed appropriately).
+ */
+
+ if (start) {
+ maxlen = other->latest_possible_frame() - position();
+ } else {
+ maxlen = last_frame() - other->earliest_possible_position();
+ }
+
+ return min (length(), min (maxlen, len));
+
}
-} /* extern "C" */
projects / ardour.git / blobdiff