/*
Copyright (C) 2013-2015 Carl Hetherington <cth@carlh.net>
- This program is free software; you can redistribute it and/or modify
+ This file is part of DCP-o-matic.
+
+ DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
- This program is distributed in the hope that it will be useful,
+ DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dcpomatic_assert.h"
#include <samplerate.h>
#include <iostream>
+#include <cmath>
#include "i18n.h"
/** @param in Input sampling rate (Hz)
* @param out Output sampling rate (Hz)
* @param channels Number of channels.
- * @param fast true to be fast rather than good.
*/
-Resampler::Resampler (int in, int out, int channels, bool fast)
+Resampler::Resampler (int in, int out, int channels)
: _in_rate (in)
, _out_rate (out)
, _channels (channels)
{
int error;
- _src = src_new (fast ? SRC_LINEAR : SRC_SINC_BEST_QUALITY, _channels, &error);
+ _src = src_new (SRC_SINC_BEST_QUALITY, _channels, &error);
if (!_src) {
throw runtime_error (String::compose (N_("could not create sample-rate converter (%1)"), error));
}
src_delete (_src);
}
+void
+Resampler::set_fast ()
+{
+ src_delete (_src);
+ int error;
+ _src = src_new (SRC_LINEAR, _channels, &error);
+ if (!_src) {
+ throw runtime_error (String::compose (N_("could not create sample-rate converter (%1)"), error));
+ }
+}
+
shared_ptr<const AudioBuffers>
Resampler::run (shared_ptr<const AudioBuffers> in)
{
int const max_resampled_frames = ceil ((double) in_frames * _out_rate / _in_rate) + 32;
SRC_DATA data;
- data.data_in = new float[in_frames * _channels];
+ float* in_buffer = new float[in_frames * _channels];
{
float** p = in->data ();
- float* q = data.data_in;
+ float* q = in_buffer;
for (int i = 0; i < in_frames; ++i) {
for (int j = 0; j < _channels; ++j) {
*q++ = p[j][in_offset + i];
}
}
+ data.data_in = in_buffer;
data.input_frames = in_frames;
data.data_out = new float[max_resampled_frames * _channels];
int64_t const output_size = 65536;
float dummy[1];
- float buffer[output_size];
+ float* buffer = new float[output_size];
SRC_DATA data;
data.data_in = dummy;
int const r = src_process (_src, &data);
if (r) {
+ delete[] buffer;
throw EncodeError (String::compose (N_("could not run sample-rate converter (%1)"), src_strerror (r)));
}
out_offset += data.output_frames_gen;
out->set_frames (out_offset);
+ delete[] buffer;
return out;
}