| /* Copyright (C) 2007 Jean-Marc Valin |
| |
| File: testresample.c |
| Testing the resampling code |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions are |
| met: |
| |
| 1. Redistributions of source code must retain the above copyright notice, |
| this list of conditions and the following disclaimer. |
| |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| |
| 3. The name of the author may not be used to endorse or promote products |
| derived from this software without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, |
| INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <stdio.h> |
| #include "speex/speex_resampler.h" |
| #include <math.h> |
| #include <stdlib.h> |
| |
| #define NN 256 |
| |
| int main() |
| { |
| spx_uint32_t i; |
| short *in; |
| short *out; |
| float *fin, *fout; |
| int count = 0; |
| SpeexResamplerState *st = speex_resampler_init(1, 8000, 12000, 10, NULL); |
| speex_resampler_set_rate(st, 96000, 44100); |
| speex_resampler_skip_zeros(st); |
| |
| in = malloc(NN*sizeof(short)); |
| out = malloc(2*NN*sizeof(short)); |
| fin = malloc(NN*sizeof(float)); |
| fout = malloc(2*NN*sizeof(float)); |
| while (1) |
| { |
| spx_uint32_t in_len; |
| spx_uint32_t out_len; |
| fread(in, sizeof(short), NN, stdin); |
| if (feof(stdin)) |
| break; |
| for (i=0;i<NN;i++) |
| fin[i]=in[i]; |
| in_len = NN; |
| out_len = 2*NN; |
| /*if (count==2) |
| speex_resampler_set_quality(st, 10);*/ |
| speex_resampler_process_float(st, 0, fin, &in_len, fout, &out_len); |
| for (i=0;i<out_len;i++) |
| out[i]=floor(.5+fout[i]); |
| /*speex_warning_int("writing", out_len);*/ |
| fwrite(out, sizeof(short), out_len, stdout); |
| count++; |
| } |
| speex_resampler_destroy(st); |
| free(in); |
| free(out); |
| free(fin); |
| free(fout); |
| return 0; |
| } |
| |