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/export_channel_configuration.h>
23 #include <ardour/export_handler.h>
24 #include <ardour/export_filename.h>
25 #include <ardour/export_processor.h>
26 #include <ardour/export_timespan.h>
28 #include <ardour/audio_port.h>
29 #include <ardour/export_failed.h>
30 #include <ardour/midi_port.h>
31 #include <ardour/session.h>
32 #include <ardour/audioengine.h>
34 #include <pbd/convert.h>
35 #include <pbd/pthread_utils.h>
43 ExportChannel::read_ports (float * data, nframes_t frames) const
45 memset (data, 0, frames * sizeof (float));
47 for (iterator it = begin(); it != end(); ++it) {
49 Sample* port_buffer = (*it)->get_audio_buffer().data();
51 for (uint32_t i = 0; i < frames; ++i) {
52 data[i] += (float) port_buffer[i];
58 /* ExportChannelConfiguration */
60 ExportChannelConfiguration::ExportChannelConfiguration (ExportStatus & status, Session & session) :
62 writer_thread (*this),
64 files_written (false),
72 ExportChannelConfiguration::get_state ()
74 XMLNode * root = new XMLNode ("ExportChannelConfiguration");
78 root->add_property ("split", get_split() ? "true" : "false");
79 root->add_property ("channels", to_string (get_n_chans(), std::dec));
82 for (ExportChannelConfiguration::ChannelList::const_iterator c_it = channels.begin(); c_it != channels.end(); ++c_it) {
83 channel = root->add_child ("Channel");
84 if (!channel) { continue; }
86 channel->add_property ("number", to_string (i, std::dec));
88 for (ExportChannel::const_iterator p_it = (*c_it)->begin(); p_it != (*c_it)->end(); ++p_it) {
89 if ((port_node = channel->add_child ("Port"))) {
90 port_node->add_property ("name", (*p_it)->name());
101 ExportChannelConfiguration::set_state (const XMLNode & root)
103 XMLProperty const * prop;
105 if ((prop = root.property ("split"))) {
106 set_split (!prop->value().compare ("true"));
109 XMLNodeList channels = root.children ("Channel");
110 for (XMLNodeList::iterator it = channels.begin(); it != channels.end(); ++it) {
111 boost::shared_ptr<ExportChannel> channel (new ExportChannel ());
113 XMLNodeList ports = (*it)->children ("Port");
114 for (XMLNodeList::iterator p_it = ports.begin(); p_it != ports.end(); ++p_it) {
115 if ((prop = (*p_it)->property ("name"))) {
116 channel->add_port (dynamic_cast<AudioPort *> (session.engine().get_port_by_name (prop->value())));
120 register_channel (channel);
127 ExportChannelConfiguration::all_channels_have_ports ()
129 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
130 if ((*it)->empty ()) { return false; }
137 ExportChannelConfiguration::write_files (boost::shared_ptr<ExportProcessor> new_processor)
139 if (files_written || writer_thread.running) {
143 files_written = true;
146 throw ExportFailed (_("Export failed due to a programming error"), _("No timespan registered to channel configuration when requesting files to be written"));
149 /* Take a local copy of the processor to be used in the thread that is created below */
151 processor.reset (new_processor->copy());
153 /* Create new thread for post processing */
155 pthread_create (&writer_thread.thread, 0, _write_files, &writer_thread);
156 writer_thread.running = true;
157 pthread_detach (writer_thread.thread);
163 ExportChannelConfiguration::write_file ()
166 nframes_t progress = 0;
167 nframes_t timespan_length = timespan->get_length();
169 nframes_t frames = 2048; // TODO good block size ?
170 nframes_t frames_read = 0;
172 float * channel_buffer = new float [frames];
173 float * file_buffer = new float [channels.size() * frames];
174 uint32_t channel_count = channels.size();
178 if (status.aborted()) { break; }
181 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
183 /* Get channel data */
185 frames_read = timespan->get_data (channel_buffer, frames, **it);
187 /* Interleave into file buffer */
189 for (uint32_t i = 0; i < frames_read; ++i) {
190 file_buffer[channel + (channel_count * i)] = channel_buffer[i];
196 progress += frames_read;
197 status.progress = (float) progress / timespan_length;
199 } while (processor->process (file_buffer, frames_read) > 0);
201 delete [] channel_buffer;
202 delete [] file_buffer;
206 ExportChannelConfiguration::_write_files (void *arg)
209 PBD::ThreadCreated (pthread_self(), "Export post-processing");
211 // cc can be trated like 'this'
212 WriterThread & cc (*((WriterThread *) arg));
214 for (FileConfigList::iterator it = cc->file_configs.begin(); it != cc->file_configs.end(); ++it) {
215 if (cc->status.aborted()) {
218 cc->processor->prepare (it->first, it->second, cc->channels.size(), cc->split, cc->timespan->get_start());
219 cc->write_file (); // Writes tempfile
220 cc->processor->prepare_post_processors ();
221 cc->processor->write_files();
225 cc->files_written = true;
228 return 0; // avoid compiler warnings
232 ExportChannelConfiguration::register_with_timespan (TimespanPtr new_timespan)
234 timespan = new_timespan;
236 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
237 timespan->register_channel (**it);
242 ExportChannelConfiguration::unregister_all ()
246 file_configs.clear();
247 files_written = false;
250 } // namespace ARDOUR