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authorPaul Davis <paul@linuxaudiosystems.com>2008-09-17 12:58:33 +0000
committerPaul Davis <paul@linuxaudiosystems.com>2008-09-17 12:58:33 +0000
commitf2b007195cd75b195e38a4cd7757debac73e7792 (patch)
tree90474413776806f02794602bbb495663e07a81ea /libs/ardour/export_timespan.cc
parent6ba5125e991e08a9d117b39a4c337cf453fd015d (diff)
new files from sakari, missed last time
git-svn-id: svn://localhost/ardour2/branches/3.0@3740 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/export_timespan.cc')
-rw-r--r--libs/ardour/export_timespan.cc113
1 files changed, 113 insertions, 0 deletions
diff --git a/libs/ardour/export_timespan.cc b/libs/ardour/export_timespan.cc
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+++ b/libs/ardour/export_timespan.cc
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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_timespan.h>
+
+#include <ardour/export_channel_configuration.h>
+#include <ardour/export_filename.h>
+#include <ardour/export_file_io.h>
+#include <ardour/export_failed.h>
+
+namespace ARDOUR
+{
+
+ExportTimespan::ExportTimespan (ExportStatus & status, nframes_t frame_rate) :
+ status (status),
+ start_frame (0),
+ end_frame (0),
+ position (0),
+ frame_rate (frame_rate)
+{
+}
+
+ExportTimespan::~ExportTimespan ()
+{
+}
+
+void
+ExportTimespan::register_channel (ExportChannel const & channel)
+{
+ TempFilePtr ptr (new ExportTempFile (1, frame_rate));
+ ChannelFilePair pair (channel, ptr);
+ filemap.insert (pair);
+}
+
+void
+ExportTimespan::rewind ()
+{
+ for (TempFileMap::iterator it = filemap.begin(); it != filemap.end(); ++it) {
+ it->second->reset_read ();
+ }
+}
+
+nframes_t
+ExportTimespan::get_data (float * data, nframes_t frames, ExportChannel const & channel)
+{
+ TempFileMap::iterator it = filemap.find (channel);
+ if (it == filemap.end()) {
+ throw ExportFailed (_("Export failed due to programming error"), _("Trying to get data from ExportTimespan for channel that was never registered!"));
+ }
+
+ return it->second->read (data, frames);
+}
+
+void
+ExportTimespan::set_range (nframes_t start, nframes_t end)
+{
+ start_frame = start;
+ position = start_frame;
+ end_frame = end;
+}
+
+int
+ExportTimespan::process (nframes_t frames)
+{
+ status.stage = export_ReadTimespan;
+
+ /* update position */
+
+ nframes_t frames_to_read;
+
+ if (position + frames <= end_frame) {
+ frames_to_read = frames;
+ } else {
+ frames_to_read = end_frame - position;
+ status.stop = true;
+ }
+
+ position += frames_to_read;
+ status.progress = (float) (position - start_frame) / (end_frame - start_frame);
+
+ /* Read channels from ports and save to tempfiles */
+
+ float * data = new float[frames_to_read];
+
+ for (TempFileMap::iterator it = filemap.begin(); it != filemap.end(); ++it) {
+ it->first.read_ports (data, frames_to_read);
+ it->second->write (data, frames_to_read);
+ }
+
+ delete [] data;
+
+ return 0;
+}
+
+
+} // namespace ARDOUR