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98389f7da4
git-svn-id: svn://localhost/ardour2/branches/3.0@3915 d708f5d6-7413-0410-9779-e7cbd77b26cf
113 lines
2.7 KiB
C++
113 lines
2.7 KiB
C++
/*
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Copyright (C) 2008 Paul Davis
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Author: Sakari Bergen
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <ardour/export_timespan.h>
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#include <ardour/export_channel_configuration.h>
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#include <ardour/export_filename.h>
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#include <ardour/export_file_io.h>
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#include <ardour/export_failed.h>
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namespace ARDOUR
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{
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ExportTimespan::ExportTimespan (ExportStatusPtr status, nframes_t frame_rate) :
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status (status),
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start_frame (0),
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end_frame (0),
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position (0),
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frame_rate (frame_rate)
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{
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}
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ExportTimespan::~ExportTimespan ()
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{
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}
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void
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ExportTimespan::register_channel (ExportChannelPtr channel)
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{
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TempFilePtr ptr (new ExportTempFile (1, frame_rate));
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ChannelFilePair pair (channel, ptr);
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filemap.insert (pair);
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}
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void
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ExportTimespan::rewind ()
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{
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for (TempFileMap::iterator it = filemap.begin(); it != filemap.end(); ++it) {
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it->second->reset_read ();
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}
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}
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nframes_t
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ExportTimespan::get_data (float * data, nframes_t frames, ExportChannelPtr channel)
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{
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TempFileMap::iterator it = filemap.find (channel);
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if (it == filemap.end()) {
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throw ExportFailed (X_("Trying to get data from ExportTimespan for channel that was never registered!"));
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}
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return it->second->read (data, frames);
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}
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void
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ExportTimespan::set_range (nframes_t start, nframes_t end)
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{
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start_frame = start;
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position = start_frame;
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end_frame = end;
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}
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int
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ExportTimespan::process (nframes_t frames)
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{
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status->stage = export_ReadTimespan;
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/* update position */
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nframes_t frames_to_read;
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if (position + frames <= end_frame) {
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frames_to_read = frames;
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} else {
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frames_to_read = end_frame - position;
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status->stop = true;
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}
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position += frames_to_read;
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status->progress = (float) (position - start_frame) / (end_frame - start_frame);
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/* Read channels from ports and save to tempfiles */
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float * data = new float[frames_to_read];
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for (TempFileMap::iterator it = filemap.begin(); it != filemap.end(); ++it) {
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it->first->read (data, frames_to_read);
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it->second->write (data, frames_to_read);
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}
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delete [] data;
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return 0;
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}
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} // namespace ARDOUR
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