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_afirdsp.h"
25 #include "libavutil/internal.h"
26 #include "libavutil/mem_internal.h"
27 #include "checkasm.h"
28 
29 #define LEN 256
30 
31 #define randomize_buffer(buf) \
32 do { \
33  int i; \
34  double bmg[2], stddev = 10.0, mean = 0.0; \
35  \
36  for (i = 0; i < LEN*2+8; i += 2) { \
37  av_bmg_get(&checkasm_lfg, bmg); \
38  buf[i] = bmg[0] * stddev + mean; \
39  buf[i + 1] = bmg[1] * stddev + mean; \
40  } \
41 } while(0);
42 
43 static void test_fcmul_add(const float *src0, const float *src1, const float *src2)
44 {
45  LOCAL_ALIGNED_32(float, cdst, [LEN*2+8]);
46  LOCAL_ALIGNED_32(float, odst, [LEN*2+8]);
47  int i;
48 
49  declare_func(void, float *sum, const float *t, const float *c,
50  ptrdiff_t len);
51 
52  memcpy(cdst, src0, (LEN*2+8) * sizeof(float));
53  memcpy(odst, src0, (LEN*2+8) * sizeof(float));
54  call_ref(cdst, src1, src2, LEN);
55  call_new(odst, src1, src2, LEN);
56  for (i = 0; i <= LEN*2; i++) {
57  int idx = i & ~1;
58  float cre = src2[idx];
59  float cim = src2[idx + 1];
60  float tre = src1[idx];
61  float tim = src1[idx + 1];
62  double t = fabs(src0[i]) +
63  fabs(tre) + fabs(tim) + fabs(cre) + fabs(cim) +
64  fabs(tre * cre) + fabs(tim * cim) +
65  fabs(tre * cim) + fabs(tim * cre) +
66  fabs(tre * cre - tim * cim) +
67  fabs(tre * cim + tim * cre) +
68  fabs(cdst[i]) + 1.0;
69  if (!float_near_abs_eps(cdst[i], odst[i], t * 2 * FLT_EPSILON)) {
70  fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",
71  i, cdst[i], odst[i], cdst[i] - odst[i]);
72  fail();
73  break;
74  }
75  }
76  memcpy(odst, src0, (LEN*2+8) * sizeof(float));
77  bench_new(odst, src1, src2, LEN);
78 }
79 
81 {
82  LOCAL_ALIGNED_32(float, src0, [LEN*2+8]);
83  LOCAL_ALIGNED_32(float, src1, [LEN*2+8]);
84  LOCAL_ALIGNED_32(float, src2, [LEN*2+8]);
85  AudioFIRDSPContext fir = { 0 };
86 
87  ff_afir_init(&fir);
88 
92 
93  if (check_func(fir.fcmul_add, "fcmul_add"))
95  report("fcmul_add");
96 }
mem_internal.h
src1
const pixel * src1
Definition: h264pred_template.c:421
checkasm_check_afir
void checkasm_check_afir(void)
Definition: af_afir.c:80
test_fcmul_add
static void test_fcmul_add(const float *src0, const float *src1, const float *src2)
Definition: af_afir.c:43
float_near_abs_eps
int float_near_abs_eps(float a, float b, float eps)
Definition: checkasm.c:340
check_func
#define check_func(func,...)
Definition: checkasm.h:124
AudioFIRDSPContext::fcmul_add
void(* fcmul_add)(float *sum, const float *t, const float *c, ptrdiff_t len)
Definition: af_afirdsp.h:30
float.h
call_ref
#define call_ref(...)
Definition: checkasm.h:139
af_afirdsp.h
fail
#define fail()
Definition: checkasm.h:133
checkasm.h
ff_afir_init
static av_unused void ff_afir_init(AudioFIRDSPContext *dsp)
Definition: af_afirdsp.h:72
call_new
#define call_new(...)
Definition: checkasm.h:211
fabs
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
LOCAL_ALIGNED_32
#define LOCAL_ALIGNED_32(t, v,...)
Definition: mem_internal.h:137
c
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
AudioFIRDSPContext
Definition: af_afirdsp.h:29
LEN
#define LEN
Definition: af_afir.c:29
report
#define report
Definition: checkasm.h:136
bench_new
#define bench_new(...)
Definition: checkasm.h:276
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
internal.h
src2
const pixel * src2
Definition: h264pred_template.c:422
len
int len
Definition: vorbis_enc_data.h:426
randomize_buffer
#define randomize_buffer(buf)
Definition: af_afir.c:31
src0
const pixel *const src0
Definition: h264pred_template.c:420
declare_func
#define declare_func(ret,...)
Definition: checkasm.h:128