FFmpeg
fmtconvert.c
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1 /*
2  * Copyright (c) 2015 Janne Grunau
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 #include <math.h>
22 #include <stdint.h>
23 #include <string.h>
24 
25 #include "libavutil/internal.h"
26 #include "libavutil/common.h"
27 #include "libavcodec/fmtconvert.h"
28 
29 #include "checkasm.h"
30 
31 #define BUF_SIZE 1024
32 
33 #define randomize_input(len) \
34  do { \
35  int k; \
36  for (k = 0; k < len; k++) { \
37  in[k] = rnd() - INT32_MAX; \
38  } \
39  for ( ; k < BUF_SIZE; k++) { \
40  in[k] = INT32_MAX; \
41  } \
42  } while (0)
43 
45 {
47  LOCAL_ALIGNED(32, float, dst0, [BUF_SIZE]);
48  LOCAL_ALIGNED(32, float, dst1, [BUF_SIZE]);
50  float scale_arr[128];
51  int length[] = {8, 16, 24, 56, 72, 128, 512, 520, 656, 768, 992};
52  int i, j;
53 
54  for (i = 0; i < FF_ARRAY_ELEMS(scale_arr); i++)
55  scale_arr[i] = (FF_ARRAY_ELEMS(scale_arr) - FF_ARRAY_ELEMS(scale_arr) / 2) / 13;
56 
58 
59  memset(dst0, 0, sizeof(*dst0) * BUF_SIZE);
60  memset(dst1, 0, sizeof(*dst1) * BUF_SIZE);
61 
62  if (check_func(c.int32_to_float_fmul_scalar, "int32_to_float_fmul_scalar")) {
63  declare_func(void, float *, const int32_t *, float, int);
64 
65  for (i = 0; i < FF_ARRAY_ELEMS(scale_arr); i++) {
66  for (j = 0; j < FF_ARRAY_ELEMS(length); j++) {
67 
68  randomize_input(length[j]);
69 
70  call_ref(dst0, in, scale_arr[i], length[j]);
71  call_new(dst1, in, scale_arr[i], length[j]);
72 
73  if (!float_near_ulp_array(dst0, dst1, 3, length[j])) {
74  fail();
75  break;
76  }
77 
78  bench_new(dst1, in, scale_arr[i], length[j]);
79  }
80  }
81  }
82  if (check_func(c.int32_to_float_fmul_array8, "int32_to_float_fmul_array8")) {
83  declare_func(void, FmtConvertContext *, float *, const int32_t *,
84  const float *, int);
85 
86  for (i = 0; i < 4; i++) {
87  for (j = 0; j < FF_ARRAY_ELEMS(length); j++) {
88 
89  randomize_input(length[j]);
90 
91  call_ref(&c, dst0, in, scale_arr, length[j]);
92  call_new(&c, dst1, in, scale_arr, length[j]);
93 
94  if (!float_near_ulp_array(dst0, dst1, 3, length[j])) {
95  fail();
96  fprintf(stderr, "int32_to_float_fmul_array8: len: %d\n", length[j]);
97  break;
98  }
99 
100  bench_new(&c, dst1, in, scale_arr, length[j]);
101  }
102  }
103  }
104  report("fmtconvert");
105 }
#define NULL
Definition: coverity.c:32
#define randomize_input(len)
Definition: fmtconvert.c:33
void checkasm_check_fmtconvert(void)
Definition: fmtconvert.c:44
#define report
Definition: checkasm.h:125
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
void(* int32_to_float_fmul_array8)(struct FmtConvertContext *c, float *dst, const int32_t *src, const float *mul, int len)
Convert an array of int32_t to float and multiply by a float value from another array, stepping along the float array once for each 8 integers.
Definition: fmtconvert.h:63
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define declare_func(ret,...)
Definition: checkasm.h:117
GLsizei GLsizei * length
Definition: opengl_enc.c:114
#define fail()
Definition: checkasm.h:122
#define BUF_SIZE
Definition: fmtconvert.c:31
common internal API header
void(* int32_to_float_fmul_scalar)(float *dst, const int32_t *src, float mul, int len)
Convert an array of int32_t to float and multiply by a float value.
Definition: fmtconvert.h:38
int32_t
av_cold void ff_fmt_convert_init(FmtConvertContext *c, AVCodecContext *avctx)
Definition: fmtconvert.c:52
#define FF_ARRAY_ELEMS(a)
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:300
#define call_ref(...)
Definition: checkasm.h:128
uint8_t pi<< 24) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8, uint8_t,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16, int16_t,(*(const int16_t *) pi >> 8)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, int16_t,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32, int32_t,(*(const int32_t *) pi >> 24)+0x80) CONV_FUNC_GROUP(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, int32_t,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, float, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, float, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, float, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, double, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, double, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC_GROUP(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, double, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31))))#define SET_CONV_FUNC_GROUP(ofmt, ifmt) static void set_generic_function(AudioConvert *ac){}void ff_audio_convert_free(AudioConvert **ac){if(!*ac) return;ff_dither_free(&(*ac) ->dc);av_freep(ac);}AudioConvert *ff_audio_convert_alloc(AVAudioResampleContext *avr, enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, int sample_rate, int apply_map){AudioConvert *ac;int in_planar, out_planar;ac=av_mallocz(sizeof(*ac));if(!ac) return NULL;ac->avr=avr;ac->out_fmt=out_fmt;ac->in_fmt=in_fmt;ac->channels=channels;ac->apply_map=apply_map;if(avr->dither_method!=AV_RESAMPLE_DITHER_NONE &&av_get_packed_sample_fmt(out_fmt)==AV_SAMPLE_FMT_S16 &&av_get_bytes_per_sample(in_fmt) > 2){ac->dc=ff_dither_alloc(avr, out_fmt, in_fmt, channels, sample_rate, apply_map);if(!ac->dc){av_free(ac);return NULL;}return ac;}in_planar=ff_sample_fmt_is_planar(in_fmt, channels);out_planar=ff_sample_fmt_is_planar(out_fmt, channels);if(in_planar==out_planar){ac->func_type=CONV_FUNC_TYPE_FLAT;ac->planes=in_planar?ac->channels:1;}else if(in_planar) ac->func_type=CONV_FUNC_TYPE_INTERLEAVE;else ac->func_type=CONV_FUNC_TYPE_DEINTERLEAVE;set_generic_function(ac);if(ARCH_AARCH64) ff_audio_convert_init_aarch64(ac);if(ARCH_ARM) ff_audio_convert_init_arm(ac);if(ARCH_X86) ff_audio_convert_init_x86(ac);return ac;}int ff_audio_convert(AudioConvert *ac, AudioData *out, AudioData *in){int use_generic=1;int len=in->nb_samples;int p;if(ac->dc){av_log(ac->avr, AV_LOG_TRACE,"%d samples - audio_convert: %s to %s (dithered)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt));return ff_convert_dither(ac-> in
#define check_func(func,...)
Definition: checkasm.h:113
common internal and external API header
#define LOCAL_ALIGNED(a, t, v,...)
Definition: internal.h:114
#define bench_new(...)
Definition: checkasm.h:255
#define call_new(...)
Definition: checkasm.h:195