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 AudioBuffer& ab (p->get_audio_buffer(frames)); // unsets AudioBuffer::_written
68 ab.set_written (true);
72 memset (buffer.get(), 0, frames * sizeof (Sample));
74 for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
75 boost::shared_ptr<AudioPort> p = it->lock ();
77 AudioBuffer& ab (p->get_audio_buffer(frames)); // unsets AudioBuffer::_written
78 Sample* port_buffer = ab.data();
79 ab.set_written (true);
81 for (uint32_t i = 0; i < frames; ++i) {
82 buffer[i] += (float) port_buffer[i];
91 PortExportChannel::get_state (XMLNode * node) const
94 for (PortSet::const_iterator it = ports.begin(); it != ports.end(); ++it) {
95 boost::shared_ptr<Port> p = it->lock ();
96 if (p && (port_node = node->add_child ("Port"))) {
97 port_node->set_property ("name", p->name());
103 PortExportChannel::set_state (XMLNode * node, Session & session)
105 XMLNodeList xml_ports = node->children ("Port");
106 for (XMLNodeList::iterator it = xml_ports.begin(); it != xml_ports.end(); ++it) {
108 if ((*it)->get_property ("name", name)) {
109 boost::shared_ptr<AudioPort> port = boost::dynamic_pointer_cast<AudioPort> (session.engine().get_port_by_name (name));
113 PBD::warning << string_compose (_("Could not get port for export channel \"%1\", dropping the channel"), name) << endmsg;
119 RegionExportChannelFactory::RegionExportChannelFactory (Session * session, AudioRegion const & region, AudioTrack & track, Type type)
123 , frames_per_cycle (session->engine().samples_per_cycle ())
124 , buffers_up_to_date (false)
125 , region_start (region.position())
126 , position (region_start)
130 n_channels = region.n_channels();
133 n_channels = region.n_channels();
135 mixdown_buffer.reset (new Sample [frames_per_cycle]);
136 gain_buffer.reset (new Sample [frames_per_cycle]);
137 std::fill_n (gain_buffer.get(), frames_per_cycle, Sample (1.0));
141 n_channels = track.n_outputs().n_audio();
144 throw ExportFailed ("Unhandled type in ExportChannelFactory constructor");
147 session->ProcessExport.connect_same_thread (export_connection, boost::bind (&RegionExportChannelFactory::new_cycle_started, this, _1));
149 buffers.ensure_buffers (DataType::AUDIO, n_channels, frames_per_cycle);
150 buffers.set_count (ChanCount (DataType::AUDIO, n_channels));
153 RegionExportChannelFactory::~RegionExportChannelFactory ()
158 RegionExportChannelFactory::create (uint32_t channel)
160 assert (channel < n_channels);
161 return ExportChannelPtr (new RegionExportChannel (*this, channel));
165 RegionExportChannelFactory::read (uint32_t channel, Sample const *& data, framecnt_t frames_to_read)
167 assert (channel < n_channels);
168 assert (frames_to_read <= frames_per_cycle);
170 if (!buffers_up_to_date) {
171 update_buffers(frames_to_read);
172 buffers_up_to_date = true;
175 data = buffers.get_audio (channel).data();
179 RegionExportChannelFactory::update_buffers (framecnt_t frames)
181 assert (frames <= frames_per_cycle);
185 for (size_t channel = 0; channel < n_channels; ++channel) {
186 region.read (buffers.get_audio (channel).data(), position - region_start, frames, channel);
190 assert (mixdown_buffer && gain_buffer);
191 for (size_t channel = 0; channel < n_channels; ++channel) {
192 memset (mixdown_buffer.get(), 0, sizeof (Sample) * frames);
193 buffers.get_audio (channel).silence(frames);
194 region.read_at (buffers.get_audio (channel).data(), mixdown_buffer.get(), gain_buffer.get(), position, frames, channel);
198 track.export_stuff (buffers, position, frames, track.main_outs(), true, true, false);
201 throw ExportFailed ("Unhandled type in ExportChannelFactory::update_buffers");
208 RouteExportChannel::RouteExportChannel(boost::shared_ptr<CapturingProcessor> processor, size_t channel,
209 boost::shared_ptr<ProcessorRemover> remover)
210 : processor (processor)
216 RouteExportChannel::~RouteExportChannel()
221 RouteExportChannel::create_from_route(std::list<ExportChannelPtr> & result, boost::shared_ptr<Route> route)
223 boost::shared_ptr<CapturingProcessor> processor = route->add_export_point();
224 uint32_t channels = processor->input_streams().n_audio();
226 boost::shared_ptr<ProcessorRemover> remover (new ProcessorRemover (route, processor));
228 for (uint32_t i = 0; i < channels; ++i) {
229 result.push_back (ExportChannelPtr (new RouteExportChannel (processor, i, remover)));
234 RouteExportChannel::set_max_buffer_size(framecnt_t frames)
237 processor->set_block_size (frames);
242 RouteExportChannel::read (Sample const *& data, framecnt_t frames) const
245 AudioBuffer const & buffer = processor->get_capture_buffers().get_audio (channel);
249 assert (frames <= (framecnt_t) buffer.capacity());
251 data = buffer.data();
255 RouteExportChannel::get_state (XMLNode *) const
261 RouteExportChannel::set_state (XMLNode *, Session &)
267 RouteExportChannel::operator< (ExportChannel const & other) const
269 RouteExportChannel const * rec;
270 if ((rec = dynamic_cast<RouteExportChannel const *>(&other)) == 0) {
271 return this < &other;
274 if (processor.get() == rec->processor.get()) {
275 return channel < rec->channel;
277 return processor.get() < rec->processor.get();
280 RouteExportChannel::ProcessorRemover::~ProcessorRemover()
282 route->remove_processor (processor);