2 Copyright (C) 2008 Paul Davis
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 #include "ardour/audio_buffer.h"
22 #include "ardour/audio_port.h"
23 #include "ardour/audio_track.h"
24 #include "ardour/audioengine.h"
25 #include "ardour/audioregion.h"
26 #include "ardour/capturing_processor.h"
27 #include "ardour/export_channel.h"
28 #include "ardour/export_failed.h"
29 #include "ardour/session.h"
31 #include "pbd/error.h"
35 using namespace ARDOUR;
37 PortExportChannel::PortExportChannel ()
42 void PortExportChannel::set_max_buffer_size(framecnt_t frames)
45 buffer.reset (new Sample[frames]);
49 PortExportChannel::operator< (ExportChannel const & other) const
51 PortExportChannel const * pec;
52 if (!(pec = dynamic_cast<PortExportChannel const *> (&other))) {
55 return ports < pec->ports;
59 PortExportChannel::read (Sample const *& data, framecnt_t frames) const
62 assert(frames <= buffer_size);
64 if (ports.size() == 1) {
65 boost::shared_ptr<AudioPort> p = ports.begin()->lock ();
66 data = p->get_audio_buffer(frames).data();
70 memset (buffer.get(), 0, frames * sizeof (Sample));
72 for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
73 boost::shared_ptr<AudioPort> p = it->lock ();
75 Sample* port_buffer = p->get_audio_buffer(frames).data();
77 for (uint32_t i = 0; i < frames; ++i) {
78 buffer[i] += (float) port_buffer[i];
87 PortExportChannel::get_state (XMLNode * node) const
90 for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
91 boost::shared_ptr<Port> p = it->lock ();
92 if (p && (port_node = node->add_child ("Port"))) {
93 port_node->add_property ("name", p->name());
99 PortExportChannel::set_state (XMLNode * node, Session & session)
101 XMLProperty const * prop;
102 XMLNodeList xml_ports = node->children ("Port");
103 for (XMLNodeList::iterator it = xml_ports.begin(); it != xml_ports.end(); ++it) {
104 if ((prop = (*it)->property ("name"))) {
105 std::string const & name = prop->value();
106 boost::shared_ptr<AudioPort> port = boost::dynamic_pointer_cast<AudioPort> (session.engine().get_port_by_name (name));
110 PBD::warning << string_compose (_("Could not get port for export channel \"%1\", dropping the channel"), name) << endmsg;
116 RegionExportChannelFactory::RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type)
120 , frames_per_cycle (session->engine().samples_per_cycle ())
121 , buffers_up_to_date (false)
122 , region_start (region.position())
123 , position (region_start)
127 n_channels = region.n_channels();
130 n_channels = region.n_channels();
132 mixdown_buffer.reset (new Sample [frames_per_cycle]);
133 gain_buffer.reset (new Sample [frames_per_cycle]);
134 std::fill_n (gain_buffer.get(), frames_per_cycle, Sample (1.0));
138 n_channels = track.n_outputs().n_audio();
141 throw ExportFailed ("Unhandled type in ExportChannelFactory constructor");
144 session->ProcessExport.connect_same_thread (export_connection, boost::bind (&RegionExportChannelFactory::new_cycle_started, this, _1));
146 buffers.ensure_buffers (DataType::AUDIO, n_channels, frames_per_cycle);
147 buffers.set_count (ChanCount (DataType::AUDIO, n_channels));
150 RegionExportChannelFactory::~RegionExportChannelFactory ()
155 RegionExportChannelFactory::create (uint32_t channel)
157 assert (channel < n_channels);
158 return ExportChannelPtr (new RegionExportChannel (*this, channel));
162 RegionExportChannelFactory::read (uint32_t channel, Sample const *& data, framecnt_t frames_to_read)
164 assert (channel < n_channels);
165 assert (frames_to_read <= frames_per_cycle);
167 if (!buffers_up_to_date) {
168 update_buffers(frames_to_read);
169 buffers_up_to_date = true;
172 data = buffers.get_audio (channel).data();
176 RegionExportChannelFactory::update_buffers (framecnt_t frames)
178 assert (frames <= frames_per_cycle);
182 for (size_t channel = 0; channel < n_channels; ++channel) {
183 region.read (buffers.get_audio (channel).data(), position - region_start, frames, channel);
187 assert (mixdown_buffer && gain_buffer);
188 for (size_t channel = 0; channel < n_channels; ++channel) {
189 memset (mixdown_buffer.get(), 0, sizeof (Sample) * frames);
190 buffers.get_audio (channel).silence(frames);
191 region.read_at (buffers.get_audio (channel).data(), mixdown_buffer.get(), gain_buffer.get(), position, frames, channel);
195 track.export_stuff (buffers, position, frames, track.main_outs(), true, true, false);
198 throw ExportFailed ("Unhandled type in ExportChannelFactory::update_buffers");
205 RouteExportChannel::RouteExportChannel(boost::shared_ptr<CapturingProcessor> processor, size_t channel,
206 boost::shared_ptr<ProcessorRemover> remover)
207 : processor (processor)
213 RouteExportChannel::~RouteExportChannel()
218 RouteExportChannel::create_from_route(std::list<ExportChannelPtr> & result, boost::shared_ptr<Route> route)
220 boost::shared_ptr<CapturingProcessor> processor = route->add_export_point();
221 uint32_t channels = processor->input_streams().n_audio();
223 boost::shared_ptr<ProcessorRemover> remover (new ProcessorRemover (route, processor));
225 for (uint32_t i = 0; i < channels; ++i) {
226 result.push_back (ExportChannelPtr (new RouteExportChannel (processor, i, remover)));
231 RouteExportChannel::set_max_buffer_size(framecnt_t frames)
234 processor->set_block_size (frames);
239 RouteExportChannel::read (Sample const *& data, framecnt_t frames) const
242 AudioBuffer const & buffer = processor->get_capture_buffers().get_audio (channel);
246 assert (frames <= (framecnt_t) buffer.capacity());
248 data = buffer.data();
252 RouteExportChannel::get_state (XMLNode *) const
258 RouteExportChannel::set_state (XMLNode *, Session &)
264 RouteExportChannel::operator< (ExportChannel const & other) const
266 RouteExportChannel const * rec;
267 if ((rec = dynamic_cast<RouteExportChannel const *>(&other)) == 0) {
268 return this < &other;
271 if (processor.get() == rec->processor.get()) {
272 return channel < rec->channel;
274 return processor.get() < rec->processor.get();
277 RouteExportChannel::ProcessorRemover::~ProcessorRemover()
279 route->remove_processor (processor);