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Diffstat (limited to 'libs/ardour/audioregion.cc')
| -rw-r--r-- | libs/ardour/audioregion.cc | 1402 |
1 files changed, 0 insertions, 1402 deletions
diff --git a/libs/ardour/audioregion.cc b/libs/ardour/audioregion.cc deleted file mode 100644 index f5f04eac6d..0000000000 --- a/libs/ardour/audioregion.cc +++ /dev/null @@ -1,1402 +0,0 @@ -/* - Copyright (C) 2000-2006 Paul Davis - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - -*/ - -#include <cmath> -#include <climits> -#include <cfloat> -#include <algorithm> - -#include <set> - -#include <sigc++/bind.h> -#include <sigc++/class_slot.h> - -#include <glibmm/thread.h> - -#include <pbd/basename.h> -#include <pbd/xml++.h> -#include <pbd/stacktrace.h> -#include <pbd/enumwriter.h> -#include <pbd/convert.h> - -#include <ardour/audioregion.h> -#include <ardour/session.h> -#include <ardour/gain.h> -#include <ardour/dB.h> -#include <ardour/playlist.h> -#include <ardour/audiofilesource.h> -#include <ardour/region_factory.h> -#include <ardour/runtime_functions.h> -#include <ardour/transient_detector.h> - -#include "i18n.h" -#include <locale.h> - -using namespace std; -using namespace ARDOUR; -using namespace PBD; - -/* a Session will reset these to its chosen defaults by calling AudioRegion::set_default_fade() */ - -Change AudioRegion::FadeInChanged = ARDOUR::new_change(); -Change AudioRegion::FadeOutChanged = ARDOUR::new_change(); -Change AudioRegion::FadeInActiveChanged = ARDOUR::new_change(); -Change AudioRegion::FadeOutActiveChanged = ARDOUR::new_change(); -Change AudioRegion::EnvelopeActiveChanged = ARDOUR::new_change(); -Change AudioRegion::ScaleAmplitudeChanged = ARDOUR::new_change(); -Change AudioRegion::EnvelopeChanged = ARDOUR::new_change(); - -void -AudioRegion::init () -{ - _scale_amplitude = 1.0; - - set_default_fades (); - set_default_envelope (); - - listen_to_my_curves (); - listen_to_my_sources (); -} - -/* constructor for use by derived types only */ -AudioRegion::AudioRegion (Session& s, nframes_t start, nframes_t length, string name) - : Region (s, start, length, name, DataType::AUDIO) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - init (); -} - -/** Basic AudioRegion constructor (one channel) */ -AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length) - : Region (src, start, length, PBD::basename_nosuffix(src->name()), DataType::AUDIO, 0, Region::Flag(Region::DefaultFlags|Region::External)) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src); - if (afs) { - afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed)); - } - - init (); -} - -/* Basic AudioRegion constructor (one channel) */ -AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags) - : Region (src, start, length, name, DataType::AUDIO, layer, flags) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src); - if (afs) { - afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed)); - } - - init (); -} - -/* Basic AudioRegion constructor (many channels) */ -AudioRegion::AudioRegion (const SourceList& srcs, nframes_t start, nframes_t length, const string& name, layer_t layer, Flag flags) - : Region (srcs, start, length, name, DataType::AUDIO, layer, flags) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - init (); - listen_to_my_sources (); -} - -/** Create a new AudioRegion, that is part of an existing one */ -AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other, nframes_t offset, nframes_t length, const string& name, layer_t layer, Flag flags) - : Region (other, offset, length, name, layer, flags) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - set<boost::shared_ptr<Source> > unique_srcs; - - for (SourceList::const_iterator i= other->_sources.begin(); i != other->_sources.end(); ++i) { - _sources.push_back (*i); - - pair<set<boost::shared_ptr<Source> >::iterator,bool> result; - - result = unique_srcs.insert (*i); - - if (result.second) { - boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (*i); - if (afs) { - afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed)); - } - } - } - - /* return to default fades if the existing ones are too long */ - init (); - - if (_flags & LeftOfSplit) { - if (_fade_in->back()->when >= _length) { - set_default_fade_in (); - } else { - _fade_in_disabled = other->_fade_in_disabled; - } - set_default_fade_out (); - _flags = Flag (_flags & ~Region::LeftOfSplit); - } - - if (_flags & RightOfSplit) { - if (_fade_out->back()->when >= _length) { - set_default_fade_out (); - } else { - _fade_out_disabled = other->_fade_out_disabled; - } - set_default_fade_in (); - _flags = Flag (_flags & ~Region::RightOfSplit); - } - - _scale_amplitude = other->_scale_amplitude; - - assert(_type == DataType::AUDIO); - listen_to_my_sources (); -} - -AudioRegion::AudioRegion (boost::shared_ptr<const AudioRegion> other) - : Region (other) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - assert(_type == DataType::AUDIO); - _scale_amplitude = other->_scale_amplitude; - _envelope = other->_envelope; - - set_default_fades (); - - listen_to_my_curves (); - listen_to_my_sources (); -} - -AudioRegion::AudioRegion (boost::shared_ptr<AudioSource> src, const XMLNode& node) - : Region (src, node) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource> (src); - if (afs) { - afs->HeaderPositionOffsetChanged.connect (mem_fun (*this, &AudioRegion::source_offset_changed)); - } - - init (); - - if (set_state (node)) { - throw failed_constructor(); - } - - assert(_type == DataType::AUDIO); - listen_to_my_sources (); -} - -AudioRegion::AudioRegion (SourceList& srcs, const XMLNode& node) - : Region (srcs, node) - , _fade_in (new AutomationList(Parameter(FadeInAutomation), 0.0, 2.0, 1.0)) - , _fade_out (new AutomationList(Parameter(FadeOutAutomation), 0.0, 2.0, 1.0)) - , _envelope (new AutomationList(Parameter(EnvelopeAutomation), 0.0, 2.0, 1.0)) -{ - init (); - - if (set_state (node)) { - throw failed_constructor(); - } - - assert(_type == DataType::AUDIO); - listen_to_my_sources (); -} - -AudioRegion::~AudioRegion () -{ -} - -void -AudioRegion::listen_to_my_sources () -{ - for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) { - (*i)->AnalysisChanged.connect (mem_fun (*this, &AudioRegion::invalidate_transients)); - } -} - -void -AudioRegion::listen_to_my_curves () -{ - _envelope->StateChanged.connect (mem_fun (*this, &AudioRegion::envelope_changed)); - _fade_in->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_in_changed)); - _fade_out->StateChanged.connect (mem_fun (*this, &AudioRegion::fade_out_changed)); -} - -void -AudioRegion::set_envelope_active (bool yn) -{ - if (envelope_active() != yn) { - char buf[64]; - if (yn) { - snprintf (buf, sizeof (buf), "envelope active"); - _flags = Flag (_flags|EnvelopeActive); - } else { - snprintf (buf, sizeof (buf), "envelope off"); - _flags = Flag (_flags & ~EnvelopeActive); - } - send_change (EnvelopeActiveChanged); - } -} - -ARDOUR::nframes_t -AudioRegion::read_peaks (PeakData *buf, nframes_t npeaks, nframes_t offset, nframes_t cnt, uint32_t chan_n, double samples_per_unit) const -{ - if (chan_n >= _sources.size()) { - return 0; - } - - if (audio_source(chan_n)->read_peaks (buf, npeaks, offset, cnt, samples_per_unit)) { - return 0; - } else { - if (_scale_amplitude != 1.0) { - for (nframes_t n = 0; n < npeaks; ++n) { - buf[n].max *= _scale_amplitude; - buf[n].min *= _scale_amplitude; - } - } - return cnt; - } -} - -nframes64_t -AudioRegion::read (Sample* buf, nframes64_t position, nframes64_t cnt, int channel) const -{ - /* raw read, no fades, no gain, nada */ - return _read_at (_sources, _length, buf, 0, 0, _position + position, cnt, channel, 0, 0, true); -} - -nframes_t -AudioRegion::read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position, - nframes_t cnt, - uint32_t chan_n, nframes_t read_frames, nframes_t skip_frames) const -{ - /* regular diskstream/butler read complete with fades etc */ - return _read_at (_sources, _length, buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, read_frames, skip_frames, false); -} - -nframes_t -AudioRegion::master_read_at (Sample *buf, Sample *mixdown_buffer, float *gain_buffer, nframes_t position, - nframes_t cnt, uint32_t chan_n) const -{ - return _read_at (_master_sources, _master_sources.front()->length(), buf, mixdown_buffer, gain_buffer, position, cnt, chan_n, 0, 0); -} - -nframes_t -AudioRegion::_read_at (const SourceList& srcs, nframes_t limit, - Sample *buf, Sample *mixdown_buffer, float *gain_buffer, - nframes_t position, nframes_t cnt, - uint32_t chan_n, - nframes_t read_frames, - nframes_t skip_frames, - bool raw) const -{ - nframes_t internal_offset; - nframes_t buf_offset; - nframes_t to_read; - - if (muted() && !raw) { - return 0; /* read nothing */ - } - - /* precondition: caller has verified that we cover the desired section */ - - if (position < _position) { - internal_offset = 0; - buf_offset = _position - position; - cnt -= buf_offset; - } else { - internal_offset = position - _position; - buf_offset = 0; - } - - if (internal_offset >= limit) { - return 0; /* read nothing */ - } - - if ((to_read = min (cnt, limit - internal_offset)) == 0) { - return 0; /* read nothing */ - } - - if (opaque() || raw) { - /* overwrite whatever is there */ - mixdown_buffer = buf + buf_offset; - } else { - mixdown_buffer += buf_offset; - } - - if (!raw) { - _read_data_count = 0; - } - - if (chan_n < n_channels()) { - - boost::shared_ptr<AudioSource> src = audio_source(chan_n); - if (src->read (mixdown_buffer, _start + internal_offset, to_read) != to_read) { - return 0; /* "read nothing" */ - } - - if (!raw) { - _read_data_count += src->read_data_count(); - } - - } else { - - /* track is N-channel, this region has less channels; silence the ones - we don't have. - */ - - memset (mixdown_buffer, 0, sizeof (Sample) * cnt); - - /* no fades required */ - - if (!raw) { - goto merge; - } - } - - /* fade in */ - - if (!raw) { - - if (_flags & FadeIn) { - - nframes_t fade_in_length = (nframes_t) _fade_in->back()->when; - - /* see if this read is within the fade in */ - - if (internal_offset < fade_in_length) { - - nframes_t fi_limit; - - fi_limit = min (to_read, fade_in_length - internal_offset); - - _fade_in->curve().get_vector (internal_offset, internal_offset+fi_limit, gain_buffer, fi_limit); - - for (nframes_t n = 0; n < fi_limit; ++n) { - mixdown_buffer[n] *= gain_buffer[n]; - } - } - } - - /* fade out */ - - if (_flags & FadeOut) { - - /* see if some part of this read is within the fade out */ - - /* ................. >| REGION - limit - - { } FADE - fade_out_length - ^ - limit - fade_out_length - |--------------| - ^internal_offset - ^internal_offset + to_read - - we need the intersection of [internal_offset,internal_offset+to_read] with - [limit - fade_out_length, limit] - - */ - - - nframes_t fade_out_length = (nframes_t) _fade_out->back()->when; - nframes_t fade_interval_start = max(internal_offset, limit-fade_out_length); - nframes_t fade_interval_end = min(internal_offset + to_read, limit); - - if (fade_interval_end > fade_interval_start) { - /* (part of the) the fade out is in this buffer */ - - nframes_t fo_limit = fade_interval_end - fade_interval_start; - nframes_t curve_offset = fade_interval_start - (limit-fade_out_length); - nframes_t fade_offset = fade_interval_start - internal_offset; - - _fade_out->curve().get_vector (curve_offset, curve_offset+fo_limit, gain_buffer, fo_limit); - - for (nframes_t n = 0, m = fade_offset; n < fo_limit; ++n, ++m) { - mixdown_buffer[m] *= gain_buffer[n]; - } - } - - } - - /* Regular gain curves */ - - if (envelope_active()) { - _envelope->curve().get_vector (internal_offset, internal_offset + to_read, gain_buffer, to_read); - - if (_scale_amplitude != 1.0f) { - for (nframes_t n = 0; n < to_read; ++n) { - mixdown_buffer[n] *= gain_buffer[n] * _scale_amplitude; - } - } else { - for (nframes_t n = 0; n < to_read; ++n) { - mixdown_buffer[n] *= gain_buffer[n]; - } - } - } else if (_scale_amplitude != 1.0f) { - Session::apply_gain_to_buffer (mixdown_buffer, to_read, _scale_amplitude); - } - - merge: - - if (!opaque()) { - - /* gack. the things we do for users. - */ - - buf += buf_offset; - - for (nframes_t n = 0; n < to_read; ++n) { - buf[n] += mixdown_buffer[n]; - } - } - } - - return to_read; -} - -XMLNode& -AudioRegion::state (bool full) -{ - XMLNode& node (Region::state (full)); - XMLNode *child; - char buf[64]; - char buf2[64]; - LocaleGuard lg (X_("POSIX")); - - node.add_property ("flags", enum_2_string (_flags)); - - snprintf (buf, sizeof(buf), "%.12g", _scale_amplitude); - node.add_property ("scale-gain", buf); - - // XXX these should move into Region - - for (uint32_t n=0; n < _sources.size(); ++n) { - snprintf (buf2, sizeof(buf2), "source-%d", n); - _sources[n]->id().print (buf, sizeof (buf)); - node.add_property (buf2, buf); - } - - for (uint32_t n=0; n < _master_sources.size(); ++n) { - snprintf (buf2, sizeof(buf2), "master-source-%d", n); - _master_sources[n]->id().print (buf, sizeof (buf)); - node.add_property (buf2, buf); - } - - snprintf (buf, sizeof (buf), "%u", (uint32_t) _sources.size()); - node.add_property ("channels", buf); - - if (full) { - - child = node.add_child (X_("FadeIn")); - - if ((_flags & DefaultFadeIn)) { - child->add_property (X_("default"), X_("yes")); - } else { - child->add_child_nocopy (_fade_in->get_state ()); - } - - child->add_property (X_("active"), _fade_in_disabled ? X_("no") : X_("yes")); - - child = node.add_child (X_("FadeOut")); - - if ((_flags & DefaultFadeOut)) { - child->add_property (X_("default"), X_("yes")); - } else { - child->add_child_nocopy (_fade_out->get_state ()); - } - - child->add_property (X_("active"), _fade_out_disabled ? X_("no") : X_("yes")); - } - - child = node.add_child ("Envelope"); - - if (full) { - bool default_env = false; - - // If there are only two points, the points are in the start of the region and the end of the region - // so, if they are both at 1.0f, that means the default region. - - if (_envelope->size() == 2 && - _envelope->front()->value == 1.0f && - _envelope->back()->value==1.0f) { - if (_envelope->front()->when == 0 && _envelope->back()->when == _length) { - default_env = true; - } - } - - if (default_env) { - child->add_property ("default", "yes"); - } else { - child->add_child_nocopy (_envelope->get_state ()); - } - - } else { - child->add_property ("default", "yes"); - } - - if (full && _extra_xml) { - node.add_child_copy (*_extra_xml); - } - - return node; -} - -int -AudioRegion::set_live_state (const XMLNode& node, Change& what_changed, bool send) -{ - const XMLNodeList& nlist = node.children(); - const XMLProperty *prop; - LocaleGuard lg (X_("POSIX")); - - Region::set_live_state (node, what_changed, false); - - uint32_t old_flags = _flags; - - if ((prop = node.property ("flags")) != 0) { - _flags = Flag (string_2_enum (prop->value(), _flags)); - - //_flags = Flag (strtol (prop->value().c_str(), (char **) 0, 16)); - - _flags = Flag (_flags & ~Region::LeftOfSplit); - _flags = Flag (_flags & ~Region::RightOfSplit); - } - - if ((old_flags ^ _flags) & Muted) { - what_changed = Change (what_changed|MuteChanged); - } - if ((old_flags ^ _flags) & Opaque) { - what_changed = Change (what_changed|OpacityChanged); - } - if ((old_flags ^ _flags) & Locked) { - what_changed = Change (what_changed|LockChanged); - } - - if ((prop = node.property ("scale-gain")) != 0) { - _scale_amplitude = atof (prop->value().c_str()); - what_changed = Change (what_changed|ScaleAmplitudeChanged); - } else { - _scale_amplitude = 1.0; - } - - /* Now find envelope description and other misc child items */ - - for (XMLNodeConstIterator niter = nlist.begin(); niter != nlist.end(); ++niter) { - - XMLNode *child; - XMLProperty *prop; - - child = (*niter); - - if (child->name() == "Envelope") { - - _envelope->clear (); - - if ((prop = child->property ("default")) != 0 || _envelope->set_state (*child)) { - set_default_envelope (); - } - - _envelope->set_max_xval (_length); - _envelope->truncate_end (_length); - - } else if (child->name() == "FadeIn") { - - _fade_in->clear (); - - if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) { - set_default_fade_in (); - } else { - XMLNode* grandchild = child->child ("AutomationList"); - if (grandchild) { - _fade_in->set_state (*grandchild); - } - } - - if ((prop = child->property ("active")) != 0) { - if (prop->value() == "yes") { - set_fade_in_active (true); - } else { - set_fade_in_active (true); - } - } - - } else if (child->name() == "FadeOut") { - - _fade_out->clear (); - - if ((prop = child->property ("default")) != 0 || (prop = child->property ("steepness")) != 0) { - set_default_fade_out (); - } else { - XMLNode* grandchild = child->child ("AutomationList"); - if (grandchild) { - _fade_out->set_state (*grandchild); - } - } - - if ((prop = child->property ("active")) != 0) { - if (prop->value() == "yes") { - set_fade_out_active (true); - } else { - set_fade_out_active (false); - } - } - - } - } - - if (send) { - send_change (what_changed); - } - - return 0; -} - -int -AudioRegion::set_state (const XMLNode& node) -{ - /* Region::set_state() calls the virtual set_live_state(), - which will get us back to AudioRegion::set_live_state() - to handle the relevant stuff. - */ - - return Region::set_state (node); -} - -void -AudioRegion::set_fade_in_shape (FadeShape shape) -{ - set_fade_in (shape, (nframes_t) _fade_in->back()->when); -} - -void -AudioRegion::set_fade_out_shape (FadeShape shape) -{ - set_fade_out (shape, (nframes_t) _fade_out->back()->when); -} - -void -AudioRegion::set_fade_in (FadeShape shape, nframes_t len) -{ - _fade_in->freeze (); - _fade_in->clear (); - - switch (shape) { - case Linear: - _fade_in->fast_simple_add (0.0, 0.0); - _fade_in->fast_simple_add (len, 1.0); - break; - - case Fast: - _fade_in->fast_simple_add (0, 0); - _fade_in->fast_simple_add (len * 0.389401, 0.0333333); - _fade_in->fast_simple_add (len * 0.629032, 0.0861111); - _fade_in->fast_simple_add (len * 0.829493, 0.233333); - _fade_in->fast_simple_add (len * 0.9447, 0.483333); - _fade_in->fast_simple_add (len * 0.976959, 0.697222); - _fade_in->fast_simple_add (len, 1); - break; - - case Slow: - _fade_in->fast_simple_add (0, 0); - _fade_in->fast_simple_add (len * 0.0207373, 0.197222); - _fade_in->fast_simple_add (len * 0.0645161, 0.525); - _fade_in->fast_simple_add (len * 0.152074, 0.802778); - _fade_in->fast_simple_add (len * 0.276498, 0.919444); - _fade_in->fast_simple_add (len * 0.481567, 0.980556); - _fade_in->fast_simple_add (len * 0.767281, 1); - _fade_in->fast_simple_add (len, 1); - break; - - case LogA: - _fade_in->fast_simple_add (0, 0); - _fade_in->fast_simple_add (len * 0.0737327, 0.308333); - _fade_in->fast_simple_add (len * 0.246544, 0.658333); - _fade_in->fast_simple_add (len * 0.470046, 0.886111); - _fade_in->fast_simple_add (len * 0.652074, 0.972222); - _fade_in->fast_simple_add (len * 0.771889, 0.988889); - _fade_in->fast_simple_add (len, 1); - break; - - case LogB: - _fade_in->fast_simple_add (0, 0); - _fade_in->fast_simple_add (len * 0.304147, 0.0694444); - _fade_in->fast_simple_add (len * 0.529954, 0.152778); - _fade_in->fast_simple_add (len * 0.725806, 0.333333); - _fade_in->fast_simple_add (len * 0.847926, 0.558333); - _fade_in->fast_simple_add (len * 0.919355, 0.730556); - _fade_in->fast_simple_add (len, 1); - break; - } - - _fade_in->thaw (); - _fade_in_shape = shape; - - send_change (FadeInChanged); -} - -void -AudioRegion::set_fade_out (FadeShape shape, nframes_t len) -{ - _fade_out->freeze (); - _fade_out->clear (); - - switch (shape) { - case Fast: - _fade_out->fast_simple_add (len * 0, 1); - _fade_out->fast_simple_add (len * 0.023041, 0.697222); - _fade_out->fast_simple_add (len * 0.0553, 0.483333); - _fade_out->fast_simple_add (len * 0.170507, 0.233333); - _fade_out->fast_simple_add (len * 0.370968, 0.0861111); - _fade_out->fast_simple_add (len * 0.610599, 0.0333333); - _fade_out->fast_simple_add (len * 1, 0); - break; - - case LogA: - _fade_out->fast_simple_add (len * 0, 1); - _fade_out->fast_simple_add (len * 0.228111, 0.988889); - _fade_out->fast_simple_add (len * 0.347926, 0.972222); - _fade_out->fast_simple_add (len * 0.529954, 0.886111); - _fade_out->fast_simple_add (len * 0.753456, 0.658333); - _fade_out->fast_simple_add (len * 0.9262673, 0.308333); - _fade_out->fast_simple_add (len * 1, 0); - break; - - case Slow: - _fade_out->fast_simple_add (len * 0, 1); - _fade_out->fast_simple_add (len * 0.305556, 1); - _fade_out->fast_simple_add (len * 0.548611, 0.991736); - _fade_out->fast_simple_add (len * 0.759259, 0.931129); - _fade_out->fast_simple_add (len * 0.918981, 0.68595); - _fade_out->fast_simple_add (len * 0.976852, 0.22865); - _fade_out->fast_simple_add (len * 1, 0); - break; - - case LogB: - _fade_out->fast_simple_add (len * 0, 1); - _fade_out->fast_simple_add (len * 0.080645, 0.730556); - _fade_out->fast_simple_add (len * 0.277778, 0.289256); - _fade_out->fast_simple_add (len * 0.470046, 0.152778); - _fade_out->fast_simple_add (len * 0.695853, 0.0694444); - _fade_out->fast_simple_add (len * 1, 0); - break; - - case Linear: - _fade_out->fast_simple_add (len * 0, 1); - _fade_out->fast_simple_add (len * 1, 0); - break; - } - - _fade_out->thaw (); - _fade_out_shape = shape; - - send_change (FadeOutChanged); -} - -void -AudioRegion::set_fade_in_length (nframes_t len) -{ - if (len > _length) { - len = _length - 1; - } - - bool changed = _fade_in->extend_to (len); - - if (changed) { - _flags = Flag (_flags & ~DefaultFadeIn); - send_change (FadeInChanged); - } -} - -void -AudioRegion::set_fade_out_length (nframes_t len) -{ - if (len > _length) { - len = _length - 1; - } - - bool changed = _fade_out->extend_to (len); - - if (changed) { - _flags = Flag (_flags & ~DefaultFadeOut); - send_change (FadeOutChanged); - } -} - -void -AudioRegion::set_fade_in_active (bool yn) -{ - if (yn == (_flags & FadeIn)) { - return; - } - if (yn) { - _flags = Flag (_flags|FadeIn); - } else { - _flags = Flag (_flags & ~FadeIn); - } - - send_change (FadeInActiveChanged); -} - -void -AudioRegion::set_fade_out_active (bool yn) -{ - if (yn == (_flags & FadeOut)) { - return; - } - if (yn) { - _flags = Flag (_flags | FadeOut); - } else { - _flags = Flag (_flags & ~FadeOut); - } - - send_change (FadeOutActiveChanged); -} - -bool -AudioRegion::fade_in_is_default () const -{ - return _fade_in_shape == Linear && _fade_in->back()->when == 64; -} - -bool -AudioRegion::fade_out_is_default () const -{ - return _fade_out_shape == Linear && _fade_out->back()->when == 64; -} - -void -AudioRegion::set_default_fade_in () -{ - set_fade_in (Linear, 64); -} - -void -AudioRegion::set_default_fade_out () -{ - set_fade_out (Linear, 64); -} - -void -AudioRegion::set_default_fades () -{ - _fade_in_disabled = 0; - _fade_out_disabled = 0; - set_default_fade_in (); - set_default_fade_out (); -} - -void -AudioRegion::set_default_envelope () -{ - _envelope->freeze (); - _envelope->clear (); - _envelope->fast_simple_add (0, 1.0f); - _envelope->fast_simple_add (_length, 1.0f); - _envelope->thaw (); -} - -void -AudioRegion::recompute_at_end () -{ - /* our length has changed. recompute a new final point by interpolating - based on the the existing curve. - */ - - _envelope->freeze (); - _envelope->truncate_end (_length); - _envelope->set_max_xval (_length); - _envelope->thaw (); - - if (_fade_in->back()->when > _length) { - _fade_in->extend_to (_length); - send_change (FadeInChanged); - } - - if (_fade_out->back()->when > _length) { - _fade_out->extend_to (_length); - send_change (FadeOutChanged); - } -} - -void -AudioRegion::recompute_at_start () -{ - /* as above, but the shift was from the front */ - - _envelope->truncate_start (_length); - - if (_fade_in->back()->when > _length) { - _fade_in->extend_to (_length); - send_change (FadeInChanged); - } - - if (_fade_out->back()->when > _length) { - _fade_out->extend_to (_length); - send_change (FadeOutChanged); - } -} - -int -AudioRegion::separate_by_channel (Session& session, vector<boost::shared_ptr<AudioRegion> >& v) const -{ - SourceList srcs; - string new_name; - int n; - - if (_sources.size() < 2) { - return 0; - } - - n = 0; - - for (SourceList::const_iterator i = _sources.begin(); i != _sources.end(); ++i) { - - srcs.clear (); - srcs.push_back (*i); - - new_name = _name; - - if (_sources.size() == 2) { - if (n == 0) { - new_name += "-L"; - } else { - new_name += "-R"; - } - } else { - new_name += '-'; - new_name += ('0' + n + 1); - } - - /* create a copy with just one source. prevent if from being thought of as "whole file" even if - it covers the entire source file(s). - */ - - Flag f = Flag (_flags & ~WholeFile); - - boost::shared_ptr<Region> r = RegionFactory::create (srcs, _start, _length, new_name, _layer, f); - boost::shared_ptr<AudioRegion> ar = boost::dynamic_pointer_cast<AudioRegion> (r); - - v.push_back (ar); - - ++n; - } - - return 0; -} - -nframes_t -AudioRegion::read_raw_internal (Sample* buf, nframes_t pos, nframes_t cnt) const -{ - return audio_source()->read (buf, pos, cnt); -} - -int -AudioRegion::exportme (Session& session, ARDOUR::ExportSpecification& spec) -{ - const nframes_t blocksize = 4096; - nframes_t to_read; - int status = -1; - - spec.channels = _sources.size(); - - if (spec.prepare (blocksize, session.frame_rate())) { - goto out; - } - - spec.pos = 0; - spec.total_frames = _length; - - while (spec.pos < _length && !spec.stop) { - - - /* step 1: interleave */ - - to_read = min (_length - spec.pos, blocksize); - - if (spec.channels == 1) { - - if (read_raw_internal (spec.dataF, _start + spec.pos, to_read) != to_read) { - goto out; - } - - } else { - - Sample buf[blocksize]; - - for (uint32_t chan = 0; chan < spec.channels; ++chan) { - - if (audio_source(chan)->read (buf, _start + spec.pos, to_read) != to_read) { - goto out; - } - - for (nframes_t x = 0; x < to_read; ++x) { - spec.dataF[chan+(x*spec.channels)] = buf[x]; - } - } - } - - if (spec.process (to_read)) { - goto out; - } - - spec.pos += to_read; - spec.progress = (double) spec.pos /_length; - - } - - status = 0; - - out: - spec.running = false; - spec.status = status; - spec.clear(); - - return status; -} - -void -AudioRegion::set_scale_amplitude (gain_t g) -{ - boost::shared_ptr<Playlist> pl (playlist()); - - _scale_amplitude = g; - - /* tell the diskstream we're in */ - - if (pl) { - pl->Modified(); - } - - /* tell everybody else */ - - send_change (ScaleAmplitudeChanged); -} - -void -AudioRegion::normalize_to (float target_dB) -{ - const nframes_t blocksize = 64 * 1024; - Sample buf[blocksize]; - nframes_t fpos; - nframes_t fend; - nframes_t to_read; - double maxamp = 0; - gain_t target = dB_to_coefficient (target_dB); - - if (target == 1.0f) { - /* do not normalize to precisely 1.0 (0 dBFS), to avoid making it appear - that we may have clipped. - */ - target -= FLT_EPSILON; - } - - fpos = _start; - fend = _start + _length; - - /* first pass: find max amplitude */ - - while (fpos < fend) { - - uint32_t n; - - to_read = min (fend - fpos, blocksize); - - for (n = 0; n < n_channels(); ++n) { - - /* read it in */ - - if (read_raw_internal (buf, fpos, to_read) != to_read) { - return; - } - - maxamp = compute_peak (buf, to_read, maxamp); - } - - fpos += to_read; - }; - - if (maxamp == 0.0f) { - /* don't even try */ - return; - } - - if (maxamp == target) { - /* we can't do anything useful */ - return; - } - - /* compute scale factor */ - - _scale_amplitude = target/maxamp; - - /* tell the diskstream we're in */ - - boost::shared_ptr<Playlist> pl (playlist()); - - if (pl) { - pl->Modified(); - } - - /* tell everybody else */ - - send_change (ScaleAmplitudeChanged); -} - -void -AudioRegion::fade_in_changed () -{ - send_change (FadeInChanged); -} - -void -AudioRegion::fade_out_changed () -{ - send_change (FadeOutChanged); -} - -void -AudioRegion::envelope_changed () -{ - send_change (EnvelopeChanged); -} - -void -AudioRegion::suspend_fade_in () -{ - if (++_fade_in_disabled == 1) { - if (fade_in_is_default()) { - set_fade_in_active (false); - } - } -} - -void -AudioRegion::resume_fade_in () -{ - if (--_fade_in_disabled == 0 && _fade_in_disabled) { - set_fade_in_active (true); - } -} - -void -AudioRegion::suspend_fade_out () -{ - if (++_fade_out_disabled == 1) { - if (fade_out_is_default()) { - set_fade_out_active (false); - } - } -} - -void -AudioRegion::resume_fade_out () -{ - if (--_fade_out_disabled == 0 &&_fade_out_disabled) { - set_fade_out_active (true); - } -} - -bool -AudioRegion::speed_mismatch (float sr) const -{ - if (_sources.empty()) { - /* impossible, but ... */ - return false; - } - - float fsr = audio_source()->sample_rate(); - - return fsr != sr; -} - -void -AudioRegion::source_offset_changed () -{ - boost::shared_ptr<AudioFileSource> afs = boost::dynamic_pointer_cast<AudioFileSource>(_sources.front()); - - if (afs && afs->destructive()) { - // set_start (source()->natural_position(), this); - set_position (source()->natural_position(), this); - } -} - -boost::shared_ptr<AudioSource> -AudioRegion::audio_source (uint32_t n) const -{ - // Guaranteed to succeed (use a static cast for speed?) - return boost::dynamic_pointer_cast<AudioSource>(source(n)); -} - -int -AudioRegion::get_transients (AnalysisFeatureList& results, bool force_new) -{ - boost::shared_ptr<Playlist> pl = playlist(); - - if (!pl) { - return -1; - } - - if (_valid_transients && !force_new) { - results = _transients; - return 0; - } - - SourceList::iterator s; - - for (s = _sources.begin() ; s != _sources.end(); ++s) { - if (!(*s)->has_been_analysed()) { - cerr << "For " << name() << " source " << (*s)->name() << " has not been analyzed\n"; - break; - } - } - - if (s == _sources.end()) { - /* all sources are analyzed, merge data from each one */ - - for (s = _sources.begin() ; s != _sources.end(); ++s) { - - /* find the set of transients within the bounds of this region */ - - AnalysisFeatureList::iterator low = lower_bound ((*s)->transients.begin(), - (*s)->transients.end(), - _start); - - AnalysisFeatureList::iterator high = upper_bound ((*s)->transients.begin(), - (*s)->transients.end(), - _start + _length); - - /* and add them */ - - results.insert (results.end(), low, high); - } - - TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0); - - /* translate all transients to current position */ - - for (AnalysisFeatureList::iterator x = results.begin(); x != results.end(); ++x) { - (*x) -= _start; - (*x) += _position; - } - - _transients = results; - _valid_transients = true; - - return 0; - } - - /* no existing/complete transient info */ - - if (!Config->get_auto_analyse_audio()) { - pl->session().Dialog (_("\ -You have requested an operation that requires audio analysis.\n\n\ -You currently have \"auto-analyse-audio\" disabled, which means\n\ -that transient data must be generated every time it is required.\n\n\ -If you are doing work that will require transient data on a\n\ -regular basis, you should probably enable \"auto-analyse-audio\"\n\ -then quit ardour and restart.")); - } - - TransientDetector t (pl->session().frame_rate()); - bool existing_results = !results.empty(); - - _transients.clear (); - _valid_transients = false; - - for (uint32_t i = 0; i < n_channels(); ++i) { - - AnalysisFeatureList these_results; - - t.reset (); - - if (t.run ("", this, i, these_results)) { - return -1; - } - - /* translate all transients to give absolute position */ - - for (AnalysisFeatureList::iterator i = these_results.begin(); i != these_results.end(); ++i) { - (*i) += _position; - } - - /* merge */ - - _transients.insert (_transients.end(), these_results.begin(), these_results.end()); - } - - if (!results.empty()) { - if (existing_results) { - - /* merge our transients into the existing ones, then clean up - those. - */ - - results.insert (results.end(), _transients.begin(), _transients.end()); - TransientDetector::cleanup_transients (results, pl->session().frame_rate(), 3.0); - } - - /* make sure ours are clean too */ - - TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0); - - } else { - - TransientDetector::cleanup_transients (_transients, pl->session().frame_rate(), 3.0); - results = _transients; - } - - _valid_transients = true; - - return 0; -} - -extern "C" { - - int region_read_peaks_from_c (void *arg, uint32_t npeaks, uint32_t start, uint32_t cnt, intptr_t data, uint32_t n_chan, double samples_per_unit) -{ - return ((AudioRegion *) arg)->read_peaks ((PeakData *) data, (nframes_t) npeaks, (nframes_t) start, (nframes_t) cnt, n_chan,samples_per_unit); -} - -uint32_t region_length_from_c (void *arg) -{ - - return ((AudioRegion *) arg)->length(); -} - -uint32_t sourcefile_length_from_c (void *arg, double zoom_factor) -{ - return ( (AudioRegion *) arg)->audio_source()->available_peaks (zoom_factor) ; -} - -} /* extern "C" */ |