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livetrax/libs/ardour/auditioner.cc

273 lines
6.6 KiB
C++

/*
Copyright (C) 2001 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 <glibmm/threads.h>
#include "pbd/error.h"
#include "ardour/audio_diskstream.h"
#include "ardour/audioregion.h"
#include "ardour/audioengine.h"
#include "ardour/delivery.h"
#include "ardour/route.h"
#include "ardour/session.h"
#include "ardour/auditioner.h"
#include "ardour/audioplaylist.h"
#include "ardour/audio_port.h"
#include "ardour/data_type.h"
#include "ardour/region_factory.h"
using namespace std;
using namespace ARDOUR;
using namespace PBD;
#include "i18n.h"
Auditioner::Auditioner (Session& s)
: AudioTrack (s, "auditioner", Route::Auditioner)
, current_frame (0)
, _auditioning (0)
, length (0)
, via_monitor (false)
{
}
int
Auditioner::init ()
{
if (Track::init ()) {
return -1;
}
string left = Config->get_auditioner_output_left();
string right = Config->get_auditioner_output_right();
vector<string> outputs;
_session.engine().get_physical_outputs (DataType::AUDIO, outputs);
if (left.empty() || left == "default") {
if (_session.monitor_out()) {
left = _session.monitor_out()->input()->audio (0)->name();
via_monitor = true;
} else {
if (outputs.size() > 0) {
left = outputs[0];
}
}
}
if (right.empty() || right == "default") {
if (_session.monitor_out()) {
right = _session.monitor_out()->input()->audio (1)->name();
via_monitor = true;
} else {
if (outputs.size() > 1) {
right = outputs[1];
}
}
}
if (left.empty() && right.empty()) {
warning << _("no outputs available for auditioner - manual connection required") << endmsg;
} else {
_main_outs->defer_pan_reset ();
if (left.length()) {
_output->add_port (left, this, DataType::AUDIO);
}
if (right.length()) {
_output->add_port (right, this, DataType::AUDIO);
}
_main_outs->allow_pan_reset ();
_main_outs->reset_panner ();
}
_output->changed.connect_same_thread (*this, boost::bind (&Auditioner::output_changed, this, _1, _2));
return 0;
}
Auditioner::~Auditioner ()
{
}
AudioPlaylist&
Auditioner::prepare_playlist ()
{
// FIXME auditioner is still audio-only
boost::shared_ptr<AudioPlaylist> apl = boost::dynamic_pointer_cast<AudioPlaylist>(_diskstream->playlist());
assert(apl);
apl->clear ();
return *apl;
}
void
Auditioner::audition_region (boost::shared_ptr<Region> region)
{
if (g_atomic_int_get (&_auditioning)) {
/* don't go via session for this, because we are going
to remain active.
*/
cancel_audition ();
}
if (boost::dynamic_pointer_cast<AudioRegion>(region) == 0) {
error << _("Auditioning of non-audio regions not yet supported") << endmsg;
return;
}
Glib::Threads::Mutex::Lock lm (lock);
/* copy it */
boost::shared_ptr<AudioRegion> the_region (boost::dynamic_pointer_cast<AudioRegion> (RegionFactory::create (region)));
the_region->set_position (0);
_diskstream->playlist()->drop_regions ();
_diskstream->playlist()->add_region (the_region, 0, 1);
if (_diskstream->n_channels().n_audio() < the_region->n_channels()) {
audio_diskstream()->add_channel (the_region->n_channels() - _diskstream->n_channels().n_audio());
} else if (_diskstream->n_channels().n_audio() > the_region->n_channels()) {
audio_diskstream()->remove_channel (_diskstream->n_channels().n_audio() - the_region->n_channels());
}
ProcessorStreams ps;
{
Glib::Threads::Mutex::Lock lm (AudioEngine::instance()->process_lock ());
if (configure_processors (&ps)) {
error << string_compose (_("Cannot setup auditioner processing flow for %1 channels"),
_diskstream->n_channels()) << endmsg;
return;
}
}
/* force a panner reset now that we have all channels */
_main_outs->reset_panner();
length = the_region->length();
int dir;
framecnt_t offset = the_region->sync_offset (dir);
/* can't audition from a negative sync point */
if (dir < 0) {
offset = 0;
}
_diskstream->seek (offset);
current_frame = offset;
g_atomic_int_set (&_auditioning, 1);
}
int
Auditioner::play_audition (framecnt_t nframes)
{
bool need_butler = false;
framecnt_t this_nframes;
int ret;
if (g_atomic_int_get (&_auditioning) == 0) {
silence (nframes);
return 0;
}
this_nframes = min (nframes, length - current_frame);
if ((ret = roll (this_nframes, current_frame, current_frame + nframes, false, need_butler)) != 0) {
silence (nframes);
return ret;
}
current_frame += this_nframes;
if (current_frame >= length) {
_session.cancel_audition ();
return 0;
} else {
return need_butler ? 1 : 0;
}
}
void
Auditioner::output_changed (IOChange change, void* /*src*/)
{
if (change.type & IOChange::ConnectionsChanged) {
string phys;
vector<string> connections;
vector<string> outputs;
_session.engine().get_physical_outputs (DataType::AUDIO, outputs);
if (_output->nth (0)->get_connections (connections)) {
if (outputs.size() > 0) {
phys = outputs[0];
}
if (phys != connections[0]) {
Config->set_auditioner_output_left (connections[0]);
} else {
Config->set_auditioner_output_left ("default");
}
} else {
Config->set_auditioner_output_left ("");
}
connections.clear ();
if (_output->nth (1)->get_connections (connections)) {
if (outputs.size() > 1) {
phys = outputs[1];
}
if (phys != connections[0]) {
Config->set_auditioner_output_right (connections[0]);
} else {
Config->set_auditioner_output_right ("default");
}
} else {
Config->set_auditioner_output_right ("");
}
}
}
ChanCount
Auditioner::input_streams () const
{
/* auditioner never has any inputs - its channel configuration
depends solely on the region we are auditioning.
*/
if (audio_diskstream()) {
return audio_diskstream()->n_channels();
}
return ChanCount ();
}
MonitorState
Auditioner::monitoring_state () const
{
return MonitoringDisk;
}