+frameoffset_t
+AudioDiskstream::calculate_playback_distance (pframes_t nframes)
+{
+ frameoffset_t playback_distance = nframes;
+
+ if (record_enabled()) {
+ playback_distance = nframes;
+ } else if (_actual_speed != 1.0f && _actual_speed != -1.0f) {
+ interpolation.set_speed (_target_speed);
+ boost::shared_ptr<ChannelList> c = channels.reader();
+ int channel = 0;
+ for (ChannelList::iterator chan = c->begin(); chan != c->end(); ++chan, ++channel) {
+ playback_distance = interpolation.interpolate (channel, nframes, NULL, NULL);
+ }
+ } else {
+ playback_distance = nframes;
+ }
+
+ if (_actual_speed < 0.0) {
+ return -playback_distance;
+ } else {
+ return playback_distance;
+ }
+}
+