4 * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef TIMESTRETCHENGINE_H
23 #define TIMESTRETCHENGINE_H
25 #include "samples.inc"
29 class TimeStretchEngine
32 // scale = out length / in length
33 TimeStretchEngine(double scale, int sample_rate, int window_time);
37 void update(double scale, int sample_rate, int window_time);
38 void overlay(double *out, double *in, int size, int skirt);
39 // Returns the number of samples in the output buffer
40 int process(Samples *in_buffer, int in_size);
41 int get_output_size();
42 // Return the output buffer
43 double* get_samples();
44 // Increment output buffer counters and shift output
45 void read_output(Samples *buffer, int size);
48 // ms length of average window
52 // Queer eye for the straight buffer
55 int output_allocation;
57 // Sample at beginning of output buffer
58 int64_t output_sample;
62 // Sample at beginning of input buffer