diff options
Diffstat (limited to 'lib/rbcodec/codecs/libopus/celt/tests/test_unit_rotation.c')
-rw-r--r-- | lib/rbcodec/codecs/libopus/celt/tests/test_unit_rotation.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/tests/test_unit_rotation.c b/lib/rbcodec/codecs/libopus/celt/tests/test_unit_rotation.c new file mode 100644 index 0000000000..8a31b3f2b1 --- /dev/null +++ b/lib/rbcodec/codecs/libopus/celt/tests/test_unit_rotation.c | |||
@@ -0,0 +1,86 @@ | |||
1 | /* Copyright (c) 2008-2011 Xiph.Org Foundation | ||
2 | Written by Jean-Marc Valin */ | ||
3 | /* | ||
4 | Redistribution and use in source and binary forms, with or without | ||
5 | modification, are permitted provided that the following conditions | ||
6 | are met: | ||
7 | |||
8 | - Redistributions of source code must retain the above copyright | ||
9 | notice, this list of conditions and the following disclaimer. | ||
10 | |||
11 | - Redistributions in binary form must reproduce the above copyright | ||
12 | notice, this list of conditions and the following disclaimer in the | ||
13 | documentation and/or other materials provided with the distribution. | ||
14 | |||
15 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
16 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
17 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
18 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER | ||
19 | OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
20 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
21 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
22 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
23 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
24 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
25 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
26 | */ | ||
27 | |||
28 | #ifdef HAVE_CONFIG_H | ||
29 | #include "config.h" | ||
30 | #endif | ||
31 | |||
32 | #ifndef CUSTOM_MODES | ||
33 | #define CUSTOM_MODES | ||
34 | #endif | ||
35 | |||
36 | #include <stdio.h> | ||
37 | #include <stdlib.h> | ||
38 | #include "vq.h" | ||
39 | #include "bands.h" | ||
40 | #include "stack_alloc.h" | ||
41 | #include <math.h> | ||
42 | |||
43 | |||
44 | #define MAX_SIZE 100 | ||
45 | |||
46 | int ret=0; | ||
47 | void test_rotation(int N, int K) | ||
48 | { | ||
49 | int i; | ||
50 | double err = 0, ener = 0, snr, snr0; | ||
51 | opus_val16 x0[MAX_SIZE]; | ||
52 | opus_val16 x1[MAX_SIZE]; | ||
53 | for (i=0;i<N;i++) | ||
54 | x1[i] = x0[i] = rand()%32767-16384; | ||
55 | exp_rotation(x1, N, 1, 1, K, SPREAD_NORMAL); | ||
56 | for (i=0;i<N;i++) | ||
57 | { | ||
58 | err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]); | ||
59 | ener += x0[i]*(double)x0[i]; | ||
60 | } | ||
61 | snr0 = 20*log10(ener/err); | ||
62 | err = ener = 0; | ||
63 | exp_rotation(x1, N, -1, 1, K, SPREAD_NORMAL); | ||
64 | for (i=0;i<N;i++) | ||
65 | { | ||
66 | err += (x0[i]-(double)x1[i])*(x0[i]-(double)x1[i]); | ||
67 | ener += x0[i]*(double)x0[i]; | ||
68 | } | ||
69 | snr = 20*log10(ener/err); | ||
70 | printf ("SNR for size %d (%d pulses) is %f (was %f without inverse)\n", N, K, snr, snr0); | ||
71 | if (snr < 60 || snr0 > 20) | ||
72 | { | ||
73 | fprintf(stderr, "FAIL!\n"); | ||
74 | ret = 1; | ||
75 | } | ||
76 | } | ||
77 | |||
78 | int main(void) | ||
79 | { | ||
80 | ALLOC_STACK; | ||
81 | test_rotation(15, 3); | ||
82 | test_rotation(23, 5); | ||
83 | test_rotation(50, 3); | ||
84 | test_rotation(80, 1); | ||
85 | return ret; | ||
86 | } | ||