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 <pbd/pthread_utils.h>
38 ExportChannel::ExportChannel ()
43 ExportChannel::~ExportChannel ()
49 ExportChannel::read_ports (float * data, nframes_t frames) const
51 memset (data, 0, frames * sizeof (float));
53 for (iterator it = begin(); it != end(); ++it) {
55 Sample* port_buffer = (*it)->get_audio_buffer().data();
57 for (uint32_t i = 0; i < frames; ++i) {
58 data[i] += (float) port_buffer[i];
64 /* ExportChannelConfiguration */
66 ExportChannelConfiguration::ExportChannelConfiguration (ExportStatus & status) :
67 writer_thread (*this),
69 files_written (false),
75 ExportChannelConfiguration::~ExportChannelConfiguration ()
81 ExportChannelConfiguration::all_channels_have_ports ()
83 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
84 if ((*it)->empty ()) { return false; }
91 ExportChannelConfiguration::write_files (boost::shared_ptr<ExportProcessor> new_processor)
93 if (files_written || writer_thread.running) {
100 throw ExportFailed (_("Export failed due to a programming error"), _("No timespan registered to channel configuration when requesting files to be written"));
103 /* Take a local copy of the processor to be used in the thread that is created below */
105 processor.reset (new_processor->copy());
107 /* Create new thread for post processing */
109 pthread_create (&writer_thread.thread, 0, _write_files, &writer_thread);
110 writer_thread.running = true;
111 pthread_detach (writer_thread.thread);
117 ExportChannelConfiguration::write_file ()
120 nframes_t progress = 0;
121 nframes_t timespan_length = timespan->get_length();
123 nframes_t frames = 2048; // TODO good block size ?
124 nframes_t frames_read = 0;
126 float * channel_buffer = new float [frames];
127 float * file_buffer = new float [channels.size() * frames];
128 uint32_t channel_count = channels.size();
132 if (status.aborted()) { break; }
135 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
137 /* Get channel data */
139 frames_read = timespan->get_data (channel_buffer, frames, **it);
141 /* Interleave into file buffer */
143 for (uint32_t i = 0; i < frames_read; ++i) {
144 file_buffer[channel + (channel_count * i)] = channel_buffer[i];
150 progress += frames_read;
151 status.progress = (float) progress / timespan_length;
153 } while (processor->process (file_buffer, frames_read) > 0);
155 delete [] channel_buffer;
156 delete [] file_buffer;
160 ExportChannelConfiguration::_write_files (void *arg)
163 PBD::ThreadCreated (pthread_self(), "Export post-processing");
165 // cc can be trated like 'this'
166 WriterThread & cc (*((WriterThread *) arg));
168 for (FileConfigList::iterator it = cc->file_configs.begin(); it != cc->file_configs.end(); ++it) {
169 if (cc->status.aborted()) {
172 cc->processor->prepare (it->first, it->second, cc->channels.size(), cc->split, cc->timespan->get_start());
173 cc->write_file (); // Writes tempfile
174 cc->processor->prepare_post_processors ();
175 cc->processor->write_files();
179 cc->files_written = true;
182 return 0; // avoid compiler warnings
186 ExportChannelConfiguration::register_with_timespan (TimespanPtr new_timespan)
188 timespan = new_timespan;
190 for (ChannelList::iterator it = channels.begin(); it != channels.end(); ++it) {
191 timespan->register_channel (**it);
196 ExportChannelConfiguration::unregister_all ()
200 file_configs.clear();
201 files_written = false;
204 } // namespace ARDOUR