#include <algorithm>
#include <cmath>
+#include <rubberband/RubberBandStretcher.h>
+
#include "pbd/error.h"
-#include "rubberband/RubberBandStretcher.h"
-#include "ardour/types.h"
-#include "ardour/stretch.h"
+#include "ardour/audioregion.h"
+#include "ardour/audiosource.h"
#include "ardour/pitch.h"
-#include "ardour/audiofilesource.h"
+#include "ardour/progress.h"
#include "ardour/session.h"
-#include "ardour/audioregion.h"
+#include "ardour/stretch.h"
+#include "ardour/types.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
using namespace std;
using namespace ARDOUR;
, tsr (req)
{
- tsr.progress = 0.0f;
+
}
RBEffect::~RBEffect ()
}
SourceList nsrcs;
- nframes_t done;
int ret = -1;
- const nframes_t bufsize = 256;
+ const samplecnt_t bufsize = 256;
gain_t* gain_buffer = 0;
Sample** buffers = 0;
char suffix[32];
string new_name;
string::size_type at;
- nframes_t pos = 0;
- int avail = 0;
boost::shared_ptr<AudioRegion> result;
-
+
cerr << "RBEffect: source region: position = " << region->position()
<< ", start = " << region->start()
<< ", length = " << region->length()
1. The region has not been stretched before.
- In this case, we just want to read region->length() frames
+ In this case, we just want to read region->length() samples
from region->start().
We will create a new region of region->length() *
- tsr.time_fraction frames. The new region will have its
+ tsr.time_fraction samples. The new region will have its
start set to 0 (because it has a new audio file that begins
at the start of the stretched area) and its ancestral_start
set to region->start() (so that we know where to begin
2. The region has been stretched before.
- The region starts at region->start() frames into its
+ The region starts at region->start() samples into its
(possibly previously stretched) source file. But we don't
want to read from its source file; we want to read from the
file it was originally stretched from.
The region's source begins at region->ancestral_start()
- frames into its master source file. Thus, we need to start
+ samples into its master source file. Thus, we need to start
reading at region->ancestral_start() + (region->start() /
- region->stretch()) frames into the master source. This
+ region->stretch()) samples into the master source. This
value will also become the ancestral_start for the new
region.
We cannot use region->ancestral_length() to establish how
- many frames to read, because it won't be up to date if the
+ many samples to read, because it won't be up to date if the
region has been trimmed since it was last stretched. We
- must read region->length() / region->stretch() frames and
+ must read region->length() / region->stretch() samples and
stretch them by tsr.time_fraction * region->stretch(), for
a new region of region->length() * tsr.time_fraction
- frames.
+ samples.
Case 1 is of course a special case of 2, where
region->ancestral_start() == 0 and region->stretch() == 1.
region->start(). This calculation is used regardless of
whether we are reading from a master or
previously-stretched region. In order to read from a point
- n frames into the master source, we need to provide n -
+ n samples into the master source, we need to provide n -
region->start() + region->position() as our position
argument to master_read_at().
double stretch = region->stretch() * tsr.time_fraction;
double shift = region->shift() * tsr.pitch_fraction;
- nframes_t read_start = region->ancestral_start() +
- nframes_t(region->start() / (double)region->stretch());
+ samplecnt_t read_start = region->ancestral_start() +
+ samplecnt_t(region->start() / (double)region->stretch());
- nframes_t read_duration =
- nframes_t(region->length() / (double)region->stretch());
+ samplecnt_t read_duration =
+ samplecnt_t(region->length() / (double)region->stretch());
uint32_t channels = region->n_channels();
RubberBandStretcher stretcher
- (session.frame_rate(), channels,
+ (session.sample_rate(), channels,
(RubberBandStretcher::Options) tsr.opts, stretch, shift);
- tsr.progress = 0.0f;
+ progress->set_progress (0);
tsr.done = false;
stretcher.setExpectedInputDuration(read_duration);
/* create new sources */
+ samplepos_t pos = 0;
+ samplecnt_t avail = 0;
+ samplecnt_t done = 0;
+
if (make_new_sources (region, nsrcs, suffix)) {
goto out;
}
/* study first, process afterwards. */
- pos = 0;
- avail = 0;
- done = 0;
-
try {
while (pos < read_duration && !tsr.cancel) {
- nframes_t this_read = 0;
+ samplecnt_t this_read = 0;
for (uint32_t i = 0; i < channels; ++i) {
- this_read = 0;
-
- nframes_t this_time;
+ samplepos_t this_time;
this_time = min(bufsize, read_duration - pos);
- nframes_t this_position;
+ samplepos_t this_position;
this_position = read_start + pos -
region->start() + region->position();
pos += this_read;
done += this_read;
- tsr.progress = ((float) done / read_duration) * 0.25;
+ progress->set_progress (((float) done / read_duration) * 0.25);
stretcher.study(buffers, this_read, pos == read_duration);
}
while (pos < read_duration && !tsr.cancel) {
- nframes_t this_read = 0;
+ samplecnt_t this_read = 0;
for (uint32_t i = 0; i < channels; ++i) {
- this_read = 0;
- nframes_t this_time;
+ samplepos_t this_time;
this_time = min(bufsize, read_duration - pos);
- nframes_t this_position;
+ samplepos_t this_position;
this_position = read_start + pos -
region->start() + region->position();
pos += this_read;
done += this_read;
- tsr.progress = 0.25 + ((float) done / read_duration) * 0.75;
+ progress->set_progress (0.25 + ((float) done / read_duration) * 0.75);
stretcher.process(buffers, this_read, pos == read_duration);
- int avail = 0;
+ samplecnt_t avail = 0;
while ((avail = stretcher.available()) > 0) {
- this_read = min(bufsize, uint32_t(avail));
+ this_read = min (bufsize, avail);
stretcher.retrieve(buffers, this_read);
while ((avail = stretcher.available()) >= 0) {
- uint32_t this_read = min(bufsize, uint32_t(avail));
+ samplecnt_t this_read = min (bufsize, avail);
stretcher.retrieve(buffers, this_read);
}
} catch (runtime_error& err) {
- error << _("timefx code failure. please notify ardour-developers.") << endmsg;
+ error << string_compose (_("programming error: %1"), X_("timefx code failure")) << endmsg;
error << err.what() << endmsg;
goto out;
}
stretch,
shift);
(*x)->set_master_sources (region->master_sources());
- (*x)->set_length( (*x)->length() * stretch, this);
+ /* multiply the old (possibly previously stretched) region length by the extra
+ stretch this time around to get its new length. this is a non-music based edit atm.
+ */
+ (*x)->set_length ((*x)->length() * tsr.time_fraction, 0);
}
/* stretch region gain envelope */
if (buffers) {
for (uint32_t i = 0; i < channels; ++i) {
- delete buffers[i];
+ delete [] buffers[i];
}
delete [] buffers;
}
}
}
- tsr.done = true;
-
return ret;
}
projects / ardour.git / blobdiff