FFmpeg: tests/checkasm/af_afir.c Source File

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 < BUF_SIZE; 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(AudioFIRDSPContext *fir)

44 {

45 #define BUF_SIZE LEN*2+8

46 LOCAL_ALIGNED_32(float, src0, [BUF_SIZE]);

47 LOCAL_ALIGNED_32(float, src1, [BUF_SIZE]);

48 LOCAL_ALIGNED_32(float, src2, [BUF_SIZE]);

49

50 randomize_buffer(src0);

51 randomize_buffer(src1);

52 randomize_buffer(src2);

53

54 if (check_func(fir->fcmul_add, "fcmul_add")) {

55 LOCAL_ALIGNED_32(float, cdst, [BUF_SIZE]);

56 LOCAL_ALIGNED_32(float, odst, [BUF_SIZE]);

57 int i;

58

59 declare_func(void, float *sum, const float *t, const float *c,

60 ptrdiff_t len);

61

62 memcpy(cdst, src0, (BUF_SIZE) * sizeof(float));

63 memcpy(odst, src0, (BUF_SIZE) * sizeof(float));

64 call_ref(cdst, src1, src2, LEN);

65 call_new(odst, src1, src2, LEN);

66 for (i = 0; i <= LEN*2; i++) {

67 int idx = i & ~1;

68 float cre = src2[idx];

69 float cim = src2[idx + 1];

70 float tre = src1[idx];

71 float tim = src1[idx + 1];

72 double t = fabs(src0[i]) +

73 fabs(tre) + fabs(tim) + fabs(cre) + fabs(cim) +

74 fabs(tre * cre) + fabs(tim * cim) +

75 fabs(tre * cim) + fabs(tim * cre) +

76 fabs(tre * cre - tim * cim) +

77 fabs(tre * cim + tim * cre) +

78 fabs(cdst[i]) + 1.0;

79 if (!float_near_abs_eps(cdst[i], odst[i], t * 2 * FLT_EPSILON)) {

80 fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",

81 i, cdst[i], odst[i], cdst[i] - odst[i]);

82 fail();

83 break;

84 }

85 }

86 memcpy(odst, src0, (BUF_SIZE) * sizeof(float));

87 bench_new(odst, src1, src2, LEN);

88 }

89

90 report("fcmul_add");

91 }

92

93 static void test_dcmul_add(AudioFIRDSPContext *fir)

94 {

95 #define BUF_SIZE LEN*2+8

96 LOCAL_ALIGNED_32(double, src0, [BUF_SIZE]);

97 LOCAL_ALIGNED_32(double, src1, [BUF_SIZE]);

98 LOCAL_ALIGNED_32(double, src2, [BUF_SIZE]);

99

100 randomize_buffer(src0);

101 randomize_buffer(src1);

102 randomize_buffer(src2);

103

104 if (check_func(fir->dcmul_add, "dcmul_add")) {

105 LOCAL_ALIGNED_32(double, cdst, [BUF_SIZE]);

106 LOCAL_ALIGNED_32(double, odst, [BUF_SIZE]);

107 int i;

108

109 declare_func(void, double *sum, const double *t, const double *c,

110 ptrdiff_t len);

111

112 memcpy(cdst, src0, (BUF_SIZE) * sizeof(double));

113 memcpy(odst, src0, (BUF_SIZE) * sizeof(double));

114 call_ref(cdst, src1, src2, LEN);

115 call_new(odst, src1, src2, LEN);

116 for (i = 0; i <= LEN*2; i++) {

117 int idx = i & ~1;

118 double cre = src2[idx];

119 double cim = src2[idx + 1];

120 double tre = src1[idx];

121 double tim = src1[idx + 1];

122 double t = fabs(src0[i]) +

123 fabs(tre) + fabs(tim) + fabs(cre) + fabs(cim) +

124 fabs(tre * cre) + fabs(tim * cim) +

125 fabs(tre * cim) + fabs(tim * cre) +

126 fabs(tre * cre - tim * cim) +

127 fabs(tre * cim + tim * cre) +

128 fabs(cdst[i]) + 1.0;

129 if (!double_near_abs_eps(cdst[i], odst[i], t * 2 * FLT_EPSILON)) {

130 fprintf(stderr, "%d: %- .12f - %- .12f = % .12g\n",

131 i, cdst[i], odst[i], cdst[i] - odst[i]);

132 fail();

133 break;

134 }

135 }

136 memcpy(odst, src0, (BUF_SIZE) * sizeof(double));

137 bench_new(odst, src1, src2, LEN);

138 }

139

140 report("dcmul_add");

141 }

142

143

144 void checkasm_check_afir(void)

145 {

146 AudioFIRDSPContext fir = { 0 };

147

148 ff_afir_init(&fir);

149 test_fcmul_add(&fir);

150 test_dcmul_add(&fir);

151 }

const pixel * src1

Definition: h264pred_template.c:421

checkasm_check_afir

void checkasm_check_afir(void)

Definition: af_afir.c:144

float_near_abs_eps

int float_near_abs_eps(float a, float b, float eps)

Definition: checkasm.c:438

#define check_func(func,...)

Definition: checkasm.h:179

AudioFIRDSPContext::fcmul_add

void(* fcmul_add)(float *sum, const float *t, const float *c, ptrdiff_t len)

Definition: af_afirdsp.h:30

#define call_ref(...)

Definition: checkasm.h:194

static void test_dcmul_add(AudioFIRDSPContext *fir)

Definition: af_afir.c:93

double_near_abs_eps

int double_near_abs_eps(double a, double b, double eps)

Definition: checkasm.c:478

#define fail()

Definition: checkasm.h:188

static av_unused void ff_afir_init(AudioFIRDSPContext *dsp)

Definition: af_afirdsp.h:73

static void test_fcmul_add(AudioFIRDSPContext *fir)

Definition: af_afir.c:43

#define call_new(...)

Definition: checkasm.h:297

static __device__ float fabs(float a)

Definition: cuda_runtime.h:182

LOCAL_ALIGNED_32

#define LOCAL_ALIGNED_32(t, v,...)

Definition: mem_internal.h:156

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

#define LEN

Definition: af_afir.c:29

#define report

Definition: checkasm.h:191

#define bench_new(...)

Definition: checkasm.h:368

i

#define i(width, name, range_min, range_max)

Definition: cbs_h2645.c:256

const pixel * src2

Definition: h264pred_template.c:422

AudioFIRDSPContext::dcmul_add

void(* dcmul_add)(double *sum, const double *t, const double *c, ptrdiff_t len)

Definition: af_afirdsp.h:32

int len

Definition: vorbis_enc_data.h:426

randomize_buffer

#define randomize_buffer(buf)

Definition: af_afir.c:31

#define BUF_SIZE

const pixel *const src0

Definition: h264pred_template.c:420

#define declare_func(ret,...)

Definition: checkasm.h:183

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