41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/* SoX Resampler Library Copyright (c) 2007-13 robs@users.sourceforge.net
|
|
* Licence for this file: LGPL v2.1 See LICENCE for details. */
|
|
|
|
/* Example 1a: Variant of example 1 using libsamplerate-like bindings. */
|
|
|
|
#include <soxr-lsr.h>
|
|
#include "examples-common.h"
|
|
|
|
float in[] = { /* Input: 12 cycles of a sine wave with freq. = irate/4 */
|
|
0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1,
|
|
0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1, 0,1,0,-1};
|
|
|
|
int main(int argc, char const * arg[])
|
|
{
|
|
double irate = argc > 1? atof(arg[1]) : 1; /* Default to interpolation */
|
|
double orate = argc > 2? atof(arg[2]) : 2; /* by a factor of 2. */
|
|
|
|
size_t olen = (size_t)(AL(in) * orate / irate + .5); /* Assay output len. */
|
|
float * out = (float *)malloc(sizeof(*out) * olen); /* Allocate output buf. */
|
|
|
|
int error, i = 0;
|
|
SRC_DATA data;
|
|
|
|
data.data_in = in;
|
|
data.data_out = out;
|
|
data.input_frames = AL(in);
|
|
data.output_frames = (int)olen;
|
|
data.src_ratio = orate / irate;
|
|
error = src_simple(&data, SRC_SINC_FASTEST, 1);
|
|
|
|
while (i++ < data.output_frames_gen) /* Print out the resampled data, */
|
|
printf("%5.2f%c", out[i-1], " \n"[!(i&7) || i == data.output_frames_gen]);
|
|
printf("%-26s %s\n", arg[0], src_strerror(error)); /* and reported result. */
|
|
|
|
if (argc > 3) /* Library version check: */
|
|
printf("runtime=%s\n", src_get_version());
|
|
|
|
free(out); /* Tidy up. */
|
|
return !!error;
|
|
}
|