ref: a0737d1fcfcc099ae72d23c127d11bfa0a0b8879
dir: /celt/tests/test_unit_rotation.c/
/* Copyright (c) 2008-2011 Xiph.Org Foundation Written by Jean-Marc Valin */ /* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: - Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. - 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. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``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 COPYRIGHT OWNER OR CONTRIBUTORS 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 #ifndef CUSTOM_MODES #define CUSTOM_MODES #endif #define CELT_C #include <stdio.h> #include <stdlib.h> #include "vq.c" #include "cwrs.c" #include "entcode.c" #include "entenc.c" #include "entdec.c" #include "mathops.c" #include "bands.h" #include <math.h> #define MAX_SIZE 100 int ret=0; void test_rotation(int N, int K) { int i; double err = 0, ener = 0, snr, snr0; opus_val16 x0[MAX_SIZE]; opus_val16 x1[MAX_SIZE]; for (i=0;i<N;i++) x1[i] = x0[i] = rand()%32767-16384; exp_rotation(x1, N, 1, 1, K, SPREAD_NORMAL); for (i=0;i<N;i++) { err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]); ener += x0[i]*(double)x0[i]; } snr0 = 20*log10(ener/err); err = ener = 0; exp_rotation(x1, N, -1, 1, K, SPREAD_NORMAL); for (i=0;i<N;i++) { err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]); ener += x0[i]*(double)x0[i]; } snr = 20*log10(ener/err); printf ("SNR for size %d (%d pulses) is %f (was %f without inverse)\n", N, K, snr, snr0); if (snr < 60 || snr0 > 20) { fprintf(stderr, "FAIL!\n"); ret = 1; } } int main(void) { ALLOC_STACK; test_rotation(15, 3); test_rotation(23, 5); test_rotation(50, 3); test_rotation(80, 1); return ret; }