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 < 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

80 void checkasm_check_afir(void)

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

89 randomize_buffer(src0);

90 randomize_buffer(src1);

91 randomize_buffer(src2);

92

93 if (check_func(fir.fcmul_add, "fcmul_add"))

94 test_fcmul_add(src0, src1, src2);

95 report("fcmul_add");

96 }

const pixel * src1

Definition: h264pred_template.c:421

checkasm_check_afir

void checkasm_check_afir(void)

Definition: af_afir.c:80

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:334

#define check_func(func,...)

Definition: checkasm.h:122

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:137

#define fail()

Definition: checkasm.h:131

static av_unused void ff_afir_init(AudioFIRDSPContext *dsp)

Definition: af_afirdsp.h:72

#define call_new(...)

Definition: checkasm.h:209

static __device__ float fabs(float a)

Definition: cuda_runtime.h:182

LOCAL_ALIGNED_32

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

Definition: mem_internal.h:136

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:134

#define bench_new(...)

Definition: checkasm.h:272

i

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

Definition: cbs_h2645.c:269

const pixel * src2

Definition: h264pred_template.c:422

int len

Definition: vorbis_enc_data.h:426

randomize_buffer

#define randomize_buffer(buf)

Definition: af_afir.c:31

const pixel *const src0

Definition: h264pred_template.c:420

#define declare_func(ret,...)

Definition: checkasm.h:126

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