Commit 13d02a0f authored by Wim Taymans's avatar Wim Taymans Committed by Tristan Matthews

test: add test for dynamic sample rate changes

Add a test that resamples a sine wave with varying samplerates to create
a sweep.
Signed-off-by: Tristan Matthews's avatarTristan Matthews <tmatth@videolan.org>
parent d5fade68
......@@ -32,7 +32,7 @@ libspeexdsp_la_LDFLAGS = -no-undefined -version-info @SPEEXDSP_LT_CURRENT@:@SPEE
libspeexdsp_la_LIBADD = $(LIBM)
if BUILD_EXAMPLES
noinst_PROGRAMS = testdenoise testecho testjitter testresample
noinst_PROGRAMS = testdenoise testecho testjitter testresample testresample2
testdenoise_SOURCES = testdenoise.c
testdenoise_LDADD = libspeexdsp.la @FFT_LIBS@
testecho_SOURCES = testecho.c
......@@ -41,4 +41,6 @@ testjitter_SOURCES = testjitter.c
testjitter_LDADD = libspeexdsp.la @FFT_LIBS@
testresample_SOURCES = testresample.c
testresample_LDADD = libspeexdsp.la @FFT_LIBS@ @LIBM@
testresample2_SOURCES = testresample2.c
testresample2_LDADD = libspeexdsp.la @FFT_LIBS@ @LIBM@
endif
/* Copyright (C) 2007 Jean-Marc Valin
File: testresample2.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 "speex/speex_resampler.h"
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#define PERIOD 32
#define INBLOCK 1024
#define RATE 48000
int main()
{
spx_uint32_t i;
float *fin, *fout;
int rate = 1000, off = 0, avail = INBLOCK;
SpeexResamplerState *st = speex_resampler_init(1, RATE, RATE, 4, NULL);
speex_resampler_set_rate(st, RATE, rate);
speex_resampler_skip_zeros(st);
fin = malloc(INBLOCK*2*sizeof(float));
for (i=0; i<INBLOCK*2;i++)
fin[i] = sinf ((float)i/PERIOD * 2 * M_PI) * 0.9;
fout = malloc(INBLOCK*4*sizeof(float));
while (1)
{
spx_uint32_t in_len;
spx_uint32_t out_len;
in_len = avail;
out_len = (in_len * rate + RATE-1) / RATE;
fprintf (stderr, "%d %d %d %d -> ", rate, off, in_len, out_len);
speex_resampler_process_float(st, 0, fin + off, &in_len, fout, &out_len);
fprintf (stderr, "%d %d\n", in_len, out_len);
off += in_len;
avail = avail - in_len + INBLOCK;
if (off >= INBLOCK)
off -= INBLOCK;
fwrite(fout, sizeof(float), out_len, stdout);
rate += 100;
if (rate > 128000)
break;
speex_resampler_set_rate(st, RATE, rate);
}
speex_resampler_destroy(st);
free(fin);
free(fout);
return 0;
}
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment