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/*
Copyright (C) 2008 Paul Davis
Author: Sakari Bergen
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 <ardour/export_channel.h>
#include <ardour/export_failed.h>
#include <ardour/audioengine.h>
using namespace ARDOUR;
bool
PortExportChannel::operator< (ExportChannel const & other) const
{
PortExportChannel const * pec;
if (!(pec = dynamic_cast<PortExportChannel const *> (&other))) {
return this < &other;
}
return ports < pec->ports;
}
void
PortExportChannel::read (Sample * data, nframes_t frames) const
{
memset (data, 0, frames * sizeof (float));
for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
if (*it != 0) {
Sample* port_buffer = (*it)->get_audio_buffer(frames, 0).data();
for (uint32_t i = 0; i < frames; ++i) {
data[i] += (float) port_buffer[i];
}
}
}
}
void
PortExportChannel::get_state (XMLNode * node) const
{
XMLNode * port_node;
for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
if ((port_node = node->add_child ("Port"))) {
port_node->add_property ("name", (*it)->name());
}
}
}
void
PortExportChannel::set_state (XMLNode * node, Session & session)
{
XMLProperty * prop;
XMLNodeList xml_ports = node->children ("Port");
for (XMLNodeList::iterator it = xml_ports.begin(); it != xml_ports.end(); ++it) {
if ((prop = (*it)->property ("name"))) {
ports.insert (dynamic_cast<AudioPort *> (session.engine().get_port_by_name (prop->value())));
}
}
}
RegionExportChannelFactory::RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type) :
region (region),
track (track),
type (type),
frames_per_cycle (session->engine().frames_per_cycle ()),
buffers_up_to_date (false),
region_start (region.position()),
position (region_start)
{
switch (type) {
case Raw:
n_channels = region.n_channels();
break;
case Processed:
n_channels = track.n_outputs().n_audio();
break;
default:
throw ExportFailed ("Unhandled type in ExportChannelFactory constructor");
}
session->ProcessExport.connect (sigc::hide (sigc::mem_fun (*this, &RegionExportChannelFactory::new_cycle_started)));
buffers.set_count (ChanCount (DataType::AUDIO, n_channels));
buffers.ensure_buffers (DataType::AUDIO, n_channels, frames_per_cycle);
}
ExportChannelPtr
RegionExportChannelFactory::create (uint32_t channel)
{
assert (channel < n_channels);
return ExportChannelPtr (new RegionExportChannel (*this, channel));
}
void
RegionExportChannelFactory::read (uint32_t channel, Sample * data, nframes_t frames_to_read)
{
assert (channel < n_channels);
assert (frames_to_read <= frames_per_cycle);
if (!buffers_up_to_date) {
update_buffers(frames_to_read);
buffers_up_to_date = true;
}
memcpy (data, buffers.get_audio (channel).data(), frames_to_read * sizeof (Sample));
}
void
RegionExportChannelFactory::update_buffers (nframes_t frames)
{
switch (type) {
case Raw:
for (size_t channel = 0; channel < n_channels; ++channel) {
region.read (buffers.get_audio (channel).data(), position - region_start, frames, channel);
}
break;
case Processed:
std::cout << "exporting " << frames << " frames from position " << position << std::endl;
track.export_stuff (buffers, position, frames);
break;
default:
throw ExportFailed ("Unhandled type in ExportChannelFactory::update_buffers");
}
position += frames;
}
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