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tweak implementation of Session::audible_frame() to be a little more defensible, and correct problems with record align/playhead position while disconnected from physical outputs

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This commit is contained in:
Paul Davis 2014-10-12 23:00:14 -04:00
parent 6600cf0daa
commit 7263877f06
1 changed files with 2 additions and 20 deletions
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22
libs/ardour/session.cc
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@ -1469,30 +1469,12 @@ Session::audible_frame () const
framepos_t tf;
framecnt_t offset;
/* the first of these two possible settings for "offset"
mean that the audible frame is stationary until
audio emerges from the latency compensation
"pseudo-pipeline".
the second means that the audible frame is stationary
until audio would emerge from a physical port
in the absence of any plugin latency compensation
*/
offset = worst_playback_latency ();
if (offset > current_block_size) {
offset -= current_block_size;
} else {
/* XXX is this correct? if we have no external
physical connections and everything is internal
then surely this is zero? still, how
likely is that anyway?
*/
offset = current_block_size;
}
assert (offset == 0 || offset >= current_block_size);
if (synced_to_engine()) {
/* Note: this is basically just sync-to-JACK */
tf = _engine.transport_frame();
} else {
tf = _transport_frame;