FFmpeg
audiodsp.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 <math.h>
20 #include <string.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 
24 #include "libavcodec/audiodsp.h"
25 
26 #include "libavutil/common.h"
27 #include "libavutil/intreadwrite.h"
28 
29 #include "checkasm.h"
30 
31 #define MAX_SIZE (32 * 128)
32 
33 #define randomize_float(buf, len) \
34  do { \
35  int i; \
36  for (i = 0; i < len; i++) { \
37  float f = (float)rnd() / (UINT_MAX >> 5) - 16.0f; \
38  buf[i] = f; \
39  } \
40  } while (0)
41 
42 #define randomize_int(buf, len, size, bits) \
43  do { \
44  int i; \
45  for (i = 0; i < len; i++) { \
46  uint ## size ## _t r = rnd() & ((1LL << bits) - 1); \
47  AV_WN ## size ## A(buf + i, -(1LL << (bits - 1)) + r); \
48  } \
49  } while (0)
50 
52 {
53  AudioDSPContext adsp;
54 
55  ff_audiodsp_init(&adsp);
56 
57  if (check_func(adsp.scalarproduct_int16, "audiodsp.scalarproduct_int16")) {
58  LOCAL_ALIGNED(32, int16_t, v1, [MAX_SIZE]);
59  LOCAL_ALIGNED(32, int16_t, v2, [MAX_SIZE]);
60  unsigned int len_bits_minus4, v1_bits, v2_bits, len;
61  int32_t res0, res1;
62 
63  declare_func_emms(AV_CPU_FLAG_MMX, int32_t, const int16_t *v1, const int16_t *v2, int len);
64 
65  // generate random 5-12bit vector length
66  len_bits_minus4 = rnd() % 8;
67  len = rnd() & ((1 << len_bits_minus4) - 1);
68  len = 16 * FFMAX(len, 1);
69 
70  // generate the bit counts for each of the vectors such that the result
71  // fits into int32
72  v1_bits = 1 + rnd() % 15;
73  v2_bits = FFMIN(32 - (len_bits_minus4 + 4) - v1_bits - 1, 15);
74 
75  randomize_int(v1, MAX_SIZE, 16, v1_bits + 1);
76  randomize_int(v2, MAX_SIZE, 16, v2_bits + 1);
77 
78  res0 = call_ref(v1, v2, len);
79  res1 = call_new(v1, v2, len);
80  if (res0 != res1)
81  fail();
82  bench_new(v1, v2, MAX_SIZE);
83  }
84 
85  if (check_func(adsp.vector_clip_int32, "audiodsp.vector_clip_int32")) {
87  LOCAL_ALIGNED(32, int32_t, dst0, [MAX_SIZE]);
88  LOCAL_ALIGNED(32, int32_t, dst1, [MAX_SIZE]);
89  int32_t val1, val2, min, max;
90  int len;
91 
93  int32_t min, int32_t max, unsigned int len);
94 
95  val1 = ((int32_t)rnd());
96  val1 = FFSIGN(val1) * (val1 & ((1 << 24) - 1));
97  val2 = ((int32_t)rnd());
98  val2 = FFSIGN(val2) * (val2 & ((1 << 24) - 1));
99 
100  min = FFMIN(val1, val2);
101  max = FFMAX(val1, val2);
102 
103  randomize_int(src, MAX_SIZE, 32, 32);
104 
105  len = rnd() % 128;
106  len = 32 * FFMAX(len, 1);
107 
108  call_ref(dst0, src, min, max, len);
109  call_new(dst1, src, min, max, len);
110  if (memcmp(dst0, dst1, len * sizeof(*dst0)))
111  fail();
112  bench_new(dst1, src, min, max, MAX_SIZE);
113  }
114 
115  if (check_func(adsp.vector_clipf, "audiodsp.vector_clipf")) {
116  LOCAL_ALIGNED(32, float, src, [MAX_SIZE]);
117  LOCAL_ALIGNED(32, float, dst0, [MAX_SIZE]);
118  LOCAL_ALIGNED(32, float, dst1, [MAX_SIZE]);
119  float val1, val2, min, max;
120  int i, len;
121 
122  declare_func_emms(AV_CPU_FLAG_MMX, void, float *dst, const float *src,
123  int len, float min, float max);
124 
125  val1 = (float)rnd() / (UINT_MAX >> 1) - 1.0f;
126  val2 = (float)rnd() / (UINT_MAX >> 1) - 1.0f;
127 
128  min = FFMIN(val1, val2);
129  max = FFMAX(val1, val2);
130 
132 
133  len = rnd() % 128;
134  len = 16 * FFMAX(len, 1);
135 
136  call_ref(dst0, src, len, min, max);
137  call_new(dst1, src, len, min, max);
138  for (i = 0; i < len; i++) {
139  if (!float_near_ulp_array(dst0, dst1, 3, len))
140  fail();
141  }
142  bench_new(dst1, src, MAX_SIZE, min, max);
143  }
144 
145  report("audiodsp");
146 }
#define randomize_int(buf, len, size, bits)
Definition: audiodsp.c:42
#define src
Definition: vp8dsp.c:254
#define report
Definition: checkasm.h:124
void(* vector_clip_int32)(int32_t *dst, const int32_t *src, int32_t min, int32_t max, unsigned int len)
Clip each element in an array of int32_t to a given minimum and maximum value.
Definition: audiodsp.h:46
av_cold void ff_audiodsp_init(AudioDSPContext *c)
Definition: audiodsp.c:106
#define f(width, name)
Definition: cbs_vp9.c:255
void(* vector_clipf)(float *dst, const float *src, int len, float min, float max)
Definition: audiodsp.h:49
#define max(a, b)
Definition: cuda_runtime.h:33
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define FFMAX(a, b)
Definition: common.h:94
#define fail()
Definition: checkasm.h:121
#define FFMIN(a, b)
Definition: common.h:96
void checkasm_check_audiodsp(void)
Definition: audiodsp.c:51
#define FFSIGN(a)
Definition: common.h:73
int32_t
#define randomize_float(buf, len)
Definition: audiodsp.c:33
#define declare_func_emms(cpu_flags, ret,...)
Definition: checkasm.h:118
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:297
#define call_ref(...)
Definition: checkasm.h:127
int32_t(* scalarproduct_int16)(const int16_t *v1, const int16_t *v2, int len)
Calculate scalar product of two vectors.
Definition: audiodsp.h:29
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:31
#define check_func(func,...)
Definition: checkasm.h:112
common internal and external API header
#define LOCAL_ALIGNED(a, t, v,...)
Definition: internal.h:114
#define rnd()
Definition: checkasm.h:105
int len
#define bench_new(...)
Definition: checkasm.h:254
#define call_new(...)
Definition: checkasm.h:194
float min
#define MAX_SIZE
Definition: audiodsp.c:31