FFmpeg
af_afir.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License along
15  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17  */
18 
19 #include "config.h"
20 
21 #include <float.h>
22 #include <stdint.h>
23 
24 #include "libavfilter/af_afir.h"
25 #include "libavutil/internal.h"
26 #include "checkasm.h"
27 
28 #define LEN 256
29 
30 #define randomize_buffer(buf) \
31 do { \
32  int i; \
33  double bmg[2], stddev = 10.0, mean = 0.0; \
34  \
35  for (i = 0; i < LEN*2+8; i += 2) { \
36  av_bmg_get(&checkasm_lfg, bmg); \
37  buf[i] = bmg[0] * stddev + mean; \
38  buf[i + 1] = bmg[1] * stddev + mean; \
39  } \
40 } while(0);
41 
42 static void test_fcmul_add(const float *src0, const float *src1, const float *src2)
43 {
44  LOCAL_ALIGNED_32(float, cdst, [LEN*2+8]);
45  LOCAL_ALIGNED_32(float, odst, [LEN*2+8]);
46  int i;
47 
48  declare_func(void, float *sum, const float *t, const float *c,
49  ptrdiff_t len);
50 
51  memcpy(cdst, src0, (LEN*2+8) * sizeof(float));
52  memcpy(odst, src0, (LEN*2+8) * sizeof(float));
53  call_ref(cdst, src1, src2, LEN);
54  call_new(odst, src1, src2, LEN);
55  for (i = 0; i <= LEN*2; i++) {
56  if (!float_near_abs_eps(cdst[i], odst[i], 6.2e-05)) {
57  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
58  i, cdst[i], odst[i], cdst[i] - odst[i]);
59  fail();
60  break;
61  }
62  }
63  memcpy(odst, src0, (LEN*2+8) * sizeof(float));
64  bench_new(odst, src1, src2, LEN);
65 }
66 
68 {
69  LOCAL_ALIGNED_32(float, src0, [LEN*2+8]);
70  LOCAL_ALIGNED_32(float, src1, [LEN*2+8]);
71  LOCAL_ALIGNED_32(float, src2, [LEN*2+8]);
72  AudioFIRDSPContext fir = { 0 };
73 
74  ff_afir_init(&fir);
75 
78  randomize_buffer(src2);
79 
80  if (check_func(fir.fcmul_add, "fcmul_add"))
81  test_fcmul_add(src0, src1, src2);
82  report("fcmul_add");
83 }
void checkasm_check_afir(void)
Definition: af_afir.c:67
static void test_fcmul_add(const float *src0, const float *src1, const float *src2)
Definition: af_afir.c:42
#define report
Definition: checkasm.h:124
int float_near_abs_eps(float a, float b, float eps)
Definition: checkasm.c:309
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define declare_func(ret,...)
Definition: checkasm.h:116
#define fail()
Definition: checkasm.h:121
common internal API header
void(* fcmul_add)(float *sum, const float *t, const float *c, ptrdiff_t len)
Definition: af_afir.h:57
void ff_afir_init(AudioFIRDSPContext *dsp)
Definition: af_afir.c:756
#define call_ref(...)
Definition: checkasm.h:127
#define src1
Definition: h264pred.c:139
#define LEN
Definition: af_afir.c:28
#define randomize_buffer(buf)
Definition: af_afir.c:30
#define check_func(func,...)
Definition: checkasm.h:112
#define src0
Definition: h264pred.c:138
#define LOCAL_ALIGNED_32(t, v,...)
Definition: internal.h:137
int len
#define bench_new(...)
Definition: checkasm.h:254
#define call_new(...)
Definition: checkasm.h:194