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 #include "libavutil/mem_internal.h"
29 
30 #include "checkasm.h"
31 
32 #define MAX_SIZE (32 * 128)
33 
34 #define randomize_float(buf, len) \
35  do { \
36  int i; \
37  for (i = 0; i < len; i++) { \
38  float f = (float)rnd() / (UINT_MAX >> 5) - 16.0f; \
39  buf[i] = f; \
40  } \
41  } while (0)
42 
43 #define randomize_int(buf, len, size, bits) \
44  do { \
45  int i; \
46  for (i = 0; i < len; i++) { \
47  uint ## size ## _t r = rnd() & ((1LL << bits) - 1); \
48  AV_WN ## size ## A(buf + i, -(1LL << (bits - 1)) + r); \
49  } \
50  } while (0)
51 
53 {
54  AudioDSPContext adsp;
55 
56  ff_audiodsp_init(&adsp);
57 
58  if (check_func(adsp.scalarproduct_int16, "audiodsp.scalarproduct_int16")) {
59  LOCAL_ALIGNED(32, int16_t, v1, [MAX_SIZE]);
60  LOCAL_ALIGNED(32, int16_t, v2, [MAX_SIZE]);
61  unsigned int len_bits_minus4, v1_bits, v2_bits, len;
62  int32_t res0, res1;
63 
64  declare_func_emms(AV_CPU_FLAG_MMX, int32_t, const int16_t *v1, const int16_t *v2, int len);
65 
66  // generate random 5-12bit vector length
67  len_bits_minus4 = rnd() % 8;
68  len = rnd() & ((1 << len_bits_minus4) - 1);
69  len = 16 * FFMAX(len, 1);
70 
71  // generate the bit counts for each of the vectors such that the result
72  // fits into int32
73  v1_bits = 1 + rnd() % 15;
74  v2_bits = FFMIN(32 - (len_bits_minus4 + 4) - v1_bits - 1, 15);
75 
76  randomize_int(v1, MAX_SIZE, 16, v1_bits + 1);
77  randomize_int(v2, MAX_SIZE, 16, v2_bits + 1);
78 
79  res0 = call_ref(v1, v2, len);
80  res1 = call_new(v1, v2, len);
81  if (res0 != res1)
82  fail();
83  bench_new(v1, v2, MAX_SIZE);
84  }
85 
86  if (check_func(adsp.vector_clip_int32, "audiodsp.vector_clip_int32")) {
88  LOCAL_ALIGNED(32, int32_t, dst0, [MAX_SIZE]);
89  LOCAL_ALIGNED(32, int32_t, dst1, [MAX_SIZE]);
90  int32_t val1, val2, min, max;
91  int len;
92 
94  int32_t min, int32_t max, unsigned int len);
95 
96  val1 = ((int32_t)rnd());
97  val1 = FFSIGN(val1) * (val1 & ((1 << 24) - 1));
98  val2 = ((int32_t)rnd());
99  val2 = FFSIGN(val2) * (val2 & ((1 << 24) - 1));
100 
101  min = FFMIN(val1, val2);
102  max = FFMAX(val1, val2);
103 
104  randomize_int(src, MAX_SIZE, 32, 32);
105 
106  len = rnd() % 128;
107  len = 32 * FFMAX(len, 1);
108 
109  call_ref(dst0, src, min, max, len);
110  call_new(dst1, src, min, max, len);
111  if (memcmp(dst0, dst1, len * sizeof(*dst0)))
112  fail();
113  bench_new(dst1, src, min, max, MAX_SIZE);
114  }
115 
116  if (check_func(adsp.vector_clipf, "audiodsp.vector_clipf")) {
117  LOCAL_ALIGNED(32, float, src, [MAX_SIZE]);
118  LOCAL_ALIGNED(32, float, dst0, [MAX_SIZE]);
119  LOCAL_ALIGNED(32, float, dst1, [MAX_SIZE]);
120  float val1, val2, min, max;
121  int i, len;
122 
123  declare_func_emms(AV_CPU_FLAG_MMX, void, float *dst, const float *src,
124  int len, float min, float max);
125 
126  val1 = (float)rnd() / (UINT_MAX >> 1) - 1.0f;
127  val2 = (float)rnd() / (UINT_MAX >> 1) - 1.0f;
128 
129  min = FFMIN(val1, val2);
130  max = FFMAX(val1, val2);
131 
133 
134  len = rnd() % 128;
135  len = 16 * FFMAX(len, 1);
136 
137  call_ref(dst0, src, len, min, max);
138  call_new(dst1, src, len, min, max);
139  for (i = 0; i < len; i++) {
140  if (!float_near_ulp_array(dst0, dst1, 3, len))
141  fail();
142  }
143  bench_new(dst1, src, MAX_SIZE, min, max);
144  }
145 
146  report("audiodsp");
147 }
declare_func_emms
#define declare_func_emms(cpu_flags, ret,...)
Definition: checkasm.h:124
AudioDSPContext::vector_clipf
void(* vector_clipf)(float *dst, const float *src, int len, float min, float max)
Definition: audiodsp.h:49
mem_internal.h
check_func
#define check_func(func,...)
Definition: checkasm.h:118
ff_audiodsp_init
av_cold void ff_audiodsp_init(AudioDSPContext *c)
Definition: audiodsp.c:106
max
#define max(a, b)
Definition: cuda_runtime.h:33
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
call_ref
#define call_ref(...)
Definition: checkasm.h:133
AudioDSPContext::vector_clip_int32
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
fail
#define fail()
Definition: checkasm.h:127
FFSIGN
#define FFSIGN(a)
Definition: common.h:66
checkasm.h
randomize_int
#define randomize_int(buf, len, size, bits)
Definition: audiodsp.c:43
rnd
#define rnd()
Definition: checkasm.h:111
LOCAL_ALIGNED
#define LOCAL_ALIGNED(a, t, v,...)
Definition: mem_internal.h:113
intreadwrite.h
f
#define f(width, name)
Definition: cbs_vp9.c:255
call_new
#define call_new(...)
Definition: checkasm.h:205
src
#define src
Definition: vp8dsp.c:255
randomize_float
#define randomize_float(buf, len)
Definition: audiodsp.c:34
AudioDSPContext::scalarproduct_int16
int32_t(* scalarproduct_int16)(const int16_t *v1, const int16_t *v2, int len)
Calculate scalar product of two vectors.
Definition: audiodsp.h:29
checkasm_check_audiodsp
void checkasm_check_audiodsp(void)
Definition: audiodsp.c:52
report
#define report
Definition: checkasm.h:130
bench_new
#define bench_new(...)
Definition: checkasm.h:268
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
common.h
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
len
int len
Definition: vorbis_enc_data.h:426
AV_CPU_FLAG_MMX
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:29
float_near_ulp_array
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:307
audiodsp.h
AudioDSPContext
Definition: audiodsp.h:24
MAX_SIZE
#define MAX_SIZE
Definition: audiodsp.c:32
int32_t
int32_t
Definition: audioconvert.c:56
min
float min
Definition: vorbis_enc_data.h:429