rollback to 3428, before the mysterious removal of libs/* at 3431/3432

git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 233 insertions, 0 deletions

diff --git a/libs/ardour/auditioner.cc b/libs/ardour/auditioner.cc
new file mode 100644
index 0000000000..d6f63c2f9d
--- /dev/null
+++ b/libs/ardour/auditioner.cc
@@ -0,0 +1,233 @@
+/*
+    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/thread.h>
+
+#include <pbd/error.h>
+
+#include <ardour/audio_diskstream.h>
+#include <ardour/audioregion.h>
+#include <ardour/audioengine.h>
+#include <ardour/route.h>
+#include <ardour/session.h>
+#include <ardour/auditioner.h>
+#include <ardour/audioplaylist.h>
+#include <ardour/panner.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::Hidden)
+{
+	string left = Config->get_auditioner_output_left();
+	string right = Config->get_auditioner_output_right();
+
+	if (left == "default") {
+		left = _session.engine().get_nth_physical_output (DataType::AUDIO, 0);	
+	}
+
+	if (right == "default") {
+		right = _session.engine().get_nth_physical_output (DataType::AUDIO, 1);
+	}
+	
+	if ((left.length() == 0) && (right.length() == 0)) {
+		warning << _("no outputs available for auditioner - manual connection required") << endmsg;
+		return;
+	}
+
+	defer_pan_reset ();
+
+	if (left.length()) {
+		add_output_port (left, this, DataType::AUDIO);
+	}
+
+	if (right.length()) {
+		audio_diskstream()->add_channel (1);
+		add_output_port (right, this, DataType::AUDIO);
+	}
+
+	allow_pan_reset ();
+	
+	reset_panner ();
+
+	IO::output_changed.connect (mem_fun (*this, &Auditioner::output_changed));
+
+	the_region.reset ((AudioRegion*) 0);
+	g_atomic_int_set (&_active, 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_current_playlist ()
+{
+	if (g_atomic_int_get (&_active)) {
+		/* don't go via session for this, because we are going
+		   to remain active.
+		*/
+		cancel_audition ();
+	}
+
+	Glib::Mutex::Lock lm (lock);
+	_diskstream->seek (0);
+	length = _diskstream->playlist()->get_maximum_extent();
+	current_frame = 0;
+
+	/* force a panner reset now that we have all channels */
+
+	_panner->reset (n_outputs().n_audio(), _diskstream->n_channels().n_audio());
+
+	g_atomic_int_set (&_active, 1);
+}
+
+void
+Auditioner::audition_region (boost::shared_ptr<Region> region)
+{
+	if (g_atomic_int_get (&_active)) {
+		/* 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::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, this);
+
+	_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());
+	}
+
+	/* force a panner reset now that we have all channels */
+
+	reset_panner();
+
+	length = the_region->length();
+
+	int dir;
+	nframes_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 (&_active, 1);
+}
+
+int
+Auditioner::play_audition (nframes_t nframes)
+{
+	bool need_butler;
+	nframes_t this_nframes;
+	int ret;
+
+	if (g_atomic_int_get (&_active) == 0) {
+		silence (nframes, 0);
+		return 0;
+	}
+
+	this_nframes = min (nframes, length - current_frame);
+
+	_diskstream->prepare ();
+
+	if ((ret = roll (this_nframes, current_frame, current_frame + nframes, 0, false, false, false)) != 0) {
+		silence (nframes, 0);
+		return ret;
+	}
+
+	need_butler = _diskstream->commit (this_nframes);
+	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)
+{
+	string phys;
+
+	if (change & ConnectionsChanged) {
+		vector<string> connections;
+		if (output (0)->get_connections (connections)) {
+			phys = _session.engine().get_nth_physical_output (DataType::AUDIO, 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 (1)->get_connections (connections)) {
+			phys = _session.engine().get_nth_physical_output (DataType::AUDIO, 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 ("");
+		}
+	}
+}