Paul Davis
f1fd7f6fa4
git-svn-id: svn://localhost/ardour2/branches/3.0@8523 d708f5d6-7413-0410-9779-e7cbd77b26cf
312 lines
7.8 KiB
C++
312 lines
7.8 KiB
C++
/*
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Copyright (C) 2004-2011 Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <inttypes.h>
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#include <cmath>
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#include <cerrno>
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#include <fstream>
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#include <cstdlib>
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#include <string>
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#include <cstdio>
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#include <locale.h>
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#include <unistd.h>
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#include <float.h>
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#include <iomanip>
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#include <glibmm.h>
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#include "pbd/cartesian.h"
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#include "pbd/convert.h"
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#include "pbd/error.h"
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#include "pbd/failed_constructor.h"
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#include "pbd/xml++.h"
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#include "pbd/enumwriter.h"
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#include "evoral/Curve.hpp"
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#include "ardour/audio_buffer.h"
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#include "ardour/audio_buffer.h"
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#include "ardour/automatable.h"
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#include "ardour/buffer_set.h"
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#include "ardour/pannable.h"
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#include "ardour/panner.h"
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#include "ardour/panner_manager.h"
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#include "ardour/panner_shell.h"
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#include "ardour/runtime_functions.h"
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#include "ardour/session.h"
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#include "ardour/utils.h"
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#include "i18n.h"
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#include "pbd/mathfix.h"
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using namespace std;
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using namespace ARDOUR;
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using namespace PBD;
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PannerShell::PannerShell (string name, Session& s, boost::shared_ptr<Pannable> p)
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: SessionObject (s, name)
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, _pannable (p)
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{
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set_name (name);
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}
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PannerShell::~PannerShell ()
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{
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}
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void
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PannerShell::configure_io (ChanCount in, ChanCount out)
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{
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uint32_t nouts = out.n_audio();
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uint32_t nins = in.n_audio();
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/* if new and old config don't need panning, or if
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the config hasn't changed, we're done.
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*/
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if (_panner && _panner->in().n_audio() == nins && _panner->out().n_audio() == nouts) {
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return;
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}
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if (nouts < 2 || nins == 0) {
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/* no need for panning with less than 2 outputs or no inputs */
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if (_panner) {
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_panner.reset ();
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Changed (); /* EMIT SIGNAL */
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}
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return;
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}
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PannerInfo* pi = PannerManager::instance().select_panner (in, out);
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if (pi == 0) {
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abort ();
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}
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_panner.reset (pi->descriptor.factory (_pannable, _session.get_speakers()));
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Changed (); /* EMIT SIGNAL */
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}
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XMLNode&
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PannerShell::get_state (void)
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{
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return state (true);
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}
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XMLNode&
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PannerShell::state (bool full)
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{
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XMLNode* node = new XMLNode ("PannerShell");
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if (_panner) {
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node->add_child_nocopy (_panner->state (full));
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}
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return *node;
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}
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int
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PannerShell::set_state (const XMLNode& node, int version)
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{
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XMLNodeList nlist = node.children ();
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XMLNodeConstIterator niter;
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const XMLProperty *prop;
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LocaleGuard lg (X_("POSIX"));
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_panner.reset ();
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for (niter = nlist.begin(); niter != nlist.end(); ++niter) {
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if ((*niter)->name() == X_("Panner")) {
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if ((prop = (*niter)->property (X_("type")))) {
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list<PannerInfo*>::iterator p;
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PannerManager& pm (PannerManager::instance());
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for (p = pm.panner_info.begin(); p != pm.panner_info.end(); ++p) {
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if (prop->value() == (*p)->descriptor.name) {
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/* note that we assume that all the stream panners
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are of the same type. pretty good
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assumption, but it's still an assumption.
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*/
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_panner.reset ((*p)->descriptor.factory (_pannable, _session.get_speakers ()));
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if (_panner->set_state (**niter, version) == 0) {
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return -1;
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}
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break;
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}
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}
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if (p == pm.panner_info.end()) {
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error << string_compose (_("Unknown panner plugin \"%1\" found in pan state - ignored"),
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prop->value())
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<< endmsg;
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}
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} else {
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error << _("panner plugin node has no type information!")
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<< endmsg;
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return -1;
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}
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}
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}
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return 0;
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}
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void
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PannerShell::distribute_no_automation (BufferSet& inbufs, BufferSet& outbufs, pframes_t nframes, gain_t gain_coeff)
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{
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if (outbufs.count().n_audio() == 0) {
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// Don't want to lose audio...
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assert(inbufs.count().n_audio() == 0);
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return;
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}
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if (outbufs.count().n_audio() == 1) {
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/* just one output: no real panning going on */
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AudioBuffer& dst = outbufs.get_audio(0);
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if (gain_coeff == 0.0f) {
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/* gain was zero, so make it silent */
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dst.silence (nframes);
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} else if (gain_coeff == 1.0f){
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/* mix all input buffers into the output */
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// copy the first
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dst.read_from(inbufs.get_audio(0), nframes);
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// accumulate starting with the second
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if (inbufs.count().n_audio() > 0) {
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BufferSet::audio_iterator i = inbufs.audio_begin();
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for (++i; i != inbufs.audio_end(); ++i) {
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dst.merge_from(*i, nframes);
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}
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}
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} else {
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/* mix all buffers into the output, scaling them all by the gain */
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// copy the first
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dst.read_from(inbufs.get_audio(0), nframes);
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// accumulate (with gain) starting with the second
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if (inbufs.count().n_audio() > 0) {
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BufferSet::audio_iterator i = inbufs.audio_begin();
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for (++i; i != inbufs.audio_end(); ++i) {
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dst.accumulate_with_gain_from(*i, nframes, gain_coeff);
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}
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}
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}
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return;
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}
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/* multiple outputs ... we must have a panner */
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assert (_panner);
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/* setup silent buffers so that we can mix into the outbuffers (slightly suboptimal -
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better to copy the first set of data then mix after that, but hey, its 2011)
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*/
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for (BufferSet::audio_iterator b = outbufs.audio_begin(); b != outbufs.audio_end(); ++b) {
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(*b).silence (nframes);
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}
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_panner->distribute (inbufs, outbufs, gain_coeff, nframes);
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}
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void
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PannerShell::run (BufferSet& inbufs, BufferSet& outbufs, framepos_t start_frame, framepos_t end_frame, pframes_t nframes)
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{
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if (outbufs.count().n_audio() == 0) {
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// Failing to deliver audio we were asked to deliver is a bug
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assert(inbufs.count().n_audio() == 0);
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return;
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}
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if (outbufs.count().n_audio() == 1) {
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/* one output only: no panner */
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AudioBuffer& dst = outbufs.get_audio(0);
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// FIXME: apply gain automation?
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// copy the first
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dst.read_from (inbufs.get_audio(0), nframes);
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// accumulate starting with the second
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BufferSet::audio_iterator i = inbufs.audio_begin();
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for (++i; i != inbufs.audio_end(); ++i) {
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dst.merge_from (*i, nframes);
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}
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return;
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}
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// More than 1 output
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AutoState as = _panner->automation_state ();
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// If we shouldn't play automation defer to distribute_no_automation
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if (!(as & Play || ((as & Touch) && !_panner->touching()))) {
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// Speed quietning
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gain_t gain_coeff = 1.0;
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if (fabsf(_session.transport_speed()) > 1.5f && Config->get_quieten_at_speed ()) {
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gain_coeff = speed_quietning;
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}
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distribute_no_automation (inbufs, outbufs, nframes, gain_coeff);
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} else {
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/* setup the terrible silence so that we can mix into the outbuffers (slightly suboptimal -
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better to copy the first set of data then mix after that, but hey, its 2011)
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*/
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for (BufferSet::audio_iterator i = outbufs.audio_begin(); i != outbufs.audio_end(); ++i) {
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i->silence(nframes);
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}
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_panner->distribute_automated (inbufs, outbufs, start_frame, end_frame, nframes, _session.pan_automation_buffer());
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}
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}
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