ardour/livetrax
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triggerbox: add start + usable length fields to address (a) repeat launch style (b) clip "editing"

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This commit is contained in:
Paul Davis 2021-08-11 18:14:27 -06:00
parent 7be493bc46
commit e9f0aeae3a
2 changed files with 14 additions and 2 deletions
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2
libs/ardour/ardour/triggerbox.h
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@ -182,6 +182,8 @@ class LIBARDOUR_API AudioTrigger : public Trigger {
std::vector<Sample*> data;
samplecnt_t read_index;
samplecnt_t data_length;
samplepos_t start_offset;
samplecnt_t usable_length;
void drop_data ();
int load_data (boost::shared_ptr<AudioRegion>);

14
libs/ardour/triggerbox.cc
View File

@ -273,6 +273,8 @@ AudioTrigger::AudioTrigger (size_t n, TriggerBox& b)
, data (0)
, read_index (0)
, data_length (0)
, start_offset (0)
, usable_length (0)
{
}
@ -407,6 +409,9 @@ AudioTrigger::set_length (timecnt_t const & newlen)
drop_data ();
data = stretched;
data_length = processed;
if (!usable_length || usable_length > data_length) {
usable_length = data_length;
}
}
timecnt_t
@ -463,6 +468,11 @@ AudioTrigger::load_data (boost::shared_ptr<AudioRegion> ar)
data_length = ar->length_samples();
/* if usable length was already set, only adjust it if it is too large */
if (!usable_length || usable_length > data_length) {
usable_length = data_length;
}
drop_data ();
try {
@ -495,7 +505,7 @@ AudioTrigger::run (BufferSet& bufs, pframes_t nframes, pframes_t dest_offset, bo
while (nframes) {
pframes_t this_read = (pframes_t) std::min ((samplecnt_t) nframes, (data_length - read_index));
pframes_t this_read = (pframes_t) std::min ((samplecnt_t) nframes, (usable_length - read_index));
DEBUG_TRACE (DEBUG::Triggers, string_compose ("%1 grab %2 @ %3 dest offset %4\n", index(), this_read, read_index, dest_offset));
@ -515,7 +525,7 @@ AudioTrigger::run (BufferSet& bufs, pframes_t nframes, pframes_t dest_offset, bo
read_index += this_read;
if (read_index >= data_length) {
if (read_index >= usable_length) {
/* We reached the end */