FFmpeg
checkasm.c
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1 /*
2  * Assembly testing and benchmarking tool
3  * Copyright (c) 2015 Henrik Gramner
4  * Copyright (c) 2008 Loren Merritt
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or modify
9  * it under the terms of the GNU General Public License as published by
10  * the Free Software Foundation; either version 2 of the License, or
11  * (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License along
19  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21  */
22 
23 #include "config.h"
24 
25 #if CONFIG_LINUX_PERF
26 # ifndef _GNU_SOURCE
27 # define _GNU_SOURCE // for syscall (performance monitoring API)
28 # endif
29 #endif
30 
31 #include <stdarg.h>
32 #include <stdio.h>
33 #include <stdlib.h>
34 #include <string.h>
35 #include "checkasm.h"
36 #include "libavutil/common.h"
37 #include "libavutil/cpu.h"
38 #include "libavutil/intfloat.h"
39 #include "libavutil/random_seed.h"
40 
41 #if HAVE_IO_H
42 #include <io.h>
43 #endif
44 
45 #if HAVE_SETCONSOLETEXTATTRIBUTE
46 #include <windows.h>
47 #define COLOR_RED FOREGROUND_RED
48 #define COLOR_GREEN FOREGROUND_GREEN
49 #define COLOR_YELLOW (FOREGROUND_RED|FOREGROUND_GREEN)
50 #else
51 #define COLOR_RED 1
52 #define COLOR_GREEN 2
53 #define COLOR_YELLOW 3
54 #endif
55 
56 #if HAVE_UNISTD_H
57 #include <unistd.h>
58 #endif
59 
60 #if !HAVE_ISATTY
61 #define isatty(fd) 1
62 #endif
63 
64 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
65 #include "libavutil/arm/cpu.h"
66 
67 void (*checkasm_checked_call)(void *func, int dummy, ...) = checkasm_checked_call_novfp;
68 #endif
69 
70 /* List of tests to invoke */
71 static const struct {
72  const char *name;
73  void (*func)(void);
74 } tests[] = {
75 #if CONFIG_AVCODEC
76  #if CONFIG_AAC_DECODER
77  { "aacpsdsp", checkasm_check_aacpsdsp },
78  { "sbrdsp", checkasm_check_sbrdsp },
79  #endif
80  #if CONFIG_ALAC_DECODER
81  { "alacdsp", checkasm_check_alacdsp },
82  #endif
83  #if CONFIG_AUDIODSP
84  { "audiodsp", checkasm_check_audiodsp },
85  #endif
86  #if CONFIG_BLOCKDSP
87  { "blockdsp", checkasm_check_blockdsp },
88  #endif
89  #if CONFIG_BSWAPDSP
90  { "bswapdsp", checkasm_check_bswapdsp },
91  #endif
92  #if CONFIG_DCA_DECODER
93  { "synth_filter", checkasm_check_synth_filter },
94  #endif
95  #if CONFIG_EXR_DECODER
96  { "exrdsp", checkasm_check_exrdsp },
97  #endif
98  #if CONFIG_FLACDSP
99  { "flacdsp", checkasm_check_flacdsp },
100  #endif
101  #if CONFIG_FMTCONVERT
102  { "fmtconvert", checkasm_check_fmtconvert },
103  #endif
104  #if CONFIG_G722DSP
105  { "g722dsp", checkasm_check_g722dsp },
106  #endif
107  #if CONFIG_H264DSP
108  { "h264dsp", checkasm_check_h264dsp },
109  #endif
110  #if CONFIG_H264PRED
111  { "h264pred", checkasm_check_h264pred },
112  #endif
113  #if CONFIG_H264QPEL
114  { "h264qpel", checkasm_check_h264qpel },
115  #endif
116  #if CONFIG_HEVC_DECODER
117  { "hevc_add_res", checkasm_check_hevc_add_res },
118  { "hevc_idct", checkasm_check_hevc_idct },
119  { "hevc_sao", checkasm_check_hevc_sao },
120  #endif
121  #if CONFIG_HUFFYUV_DECODER
122  { "huffyuvdsp", checkasm_check_huffyuvdsp },
123  #endif
124  #if CONFIG_JPEG2000_DECODER
125  { "jpeg2000dsp", checkasm_check_jpeg2000dsp },
126  #endif
127  #if CONFIG_HUFFYUVDSP
128  { "llviddsp", checkasm_check_llviddsp },
129  #endif
130  #if CONFIG_LLVIDENCDSP
131  { "llviddspenc", checkasm_check_llviddspenc },
132  #endif
133  #if CONFIG_OPUS_DECODER
134  { "opusdsp", checkasm_check_opusdsp },
135  #endif
136  #if CONFIG_PIXBLOCKDSP
137  { "pixblockdsp", checkasm_check_pixblockdsp },
138  #endif
139  #if CONFIG_UTVIDEO_DECODER
140  { "utvideodsp", checkasm_check_utvideodsp },
141  #endif
142  #if CONFIG_V210_DECODER
143  { "v210dec", checkasm_check_v210dec },
144  #endif
145  #if CONFIG_V210_ENCODER
146  { "v210enc", checkasm_check_v210enc },
147  #endif
148  #if CONFIG_VP8DSP
149  { "vp8dsp", checkasm_check_vp8dsp },
150  #endif
151  #if CONFIG_VP9_DECODER
152  { "vp9dsp", checkasm_check_vp9dsp },
153  #endif
154  #if CONFIG_VIDEODSP
155  { "videodsp", checkasm_check_videodsp },
156  #endif
157 #endif
158 #if CONFIG_AVFILTER
159  #if CONFIG_AFIR_FILTER
160  { "af_afir", checkasm_check_afir },
161  #endif
162  #if CONFIG_BLEND_FILTER
163  { "vf_blend", checkasm_check_blend },
164  #endif
165  #if CONFIG_COLORSPACE_FILTER
166  { "vf_colorspace", checkasm_check_colorspace },
167  #endif
168  #if CONFIG_EQ_FILTER
169  { "vf_eq", checkasm_check_vf_eq },
170  #endif
171  #if CONFIG_GBLUR_FILTER
172  { "vf_gblur", checkasm_check_vf_gblur },
173  #endif
174  #if CONFIG_HFLIP_FILTER
175  { "vf_hflip", checkasm_check_vf_hflip },
176  #endif
177  #if CONFIG_NLMEANS_FILTER
178  { "vf_nlmeans", checkasm_check_nlmeans },
179  #endif
180  #if CONFIG_THRESHOLD_FILTER
181  { "vf_threshold", checkasm_check_vf_threshold },
182  #endif
183 #endif
184 #if CONFIG_SWSCALE
185  { "sw_rgb", checkasm_check_sw_rgb },
186 #endif
187 #if CONFIG_AVUTIL
188  { "fixed_dsp", checkasm_check_fixed_dsp },
189  { "float_dsp", checkasm_check_float_dsp },
190 #endif
191  { NULL }
192 };
193 
194 /* List of cpu flags to check */
195 static const struct {
196  const char *name;
197  const char *suffix;
198  int flag;
199 } cpus[] = {
200 #if ARCH_AARCH64
201  { "ARMV8", "armv8", AV_CPU_FLAG_ARMV8 },
202  { "NEON", "neon", AV_CPU_FLAG_NEON },
203 #elif ARCH_ARM
204  { "ARMV5TE", "armv5te", AV_CPU_FLAG_ARMV5TE },
205  { "ARMV6", "armv6", AV_CPU_FLAG_ARMV6 },
206  { "ARMV6T2", "armv6t2", AV_CPU_FLAG_ARMV6T2 },
207  { "VFP", "vfp", AV_CPU_FLAG_VFP },
208  { "VFP_VM", "vfp_vm", AV_CPU_FLAG_VFP_VM },
209  { "VFPV3", "vfp3", AV_CPU_FLAG_VFPV3 },
210  { "NEON", "neon", AV_CPU_FLAG_NEON },
211 #elif ARCH_PPC
212  { "ALTIVEC", "altivec", AV_CPU_FLAG_ALTIVEC },
213  { "VSX", "vsx", AV_CPU_FLAG_VSX },
214  { "POWER8", "power8", AV_CPU_FLAG_POWER8 },
215 #elif ARCH_X86
216  { "MMX", "mmx", AV_CPU_FLAG_MMX|AV_CPU_FLAG_CMOV },
217  { "MMXEXT", "mmxext", AV_CPU_FLAG_MMXEXT },
218  { "3DNOW", "3dnow", AV_CPU_FLAG_3DNOW },
219  { "3DNOWEXT", "3dnowext", AV_CPU_FLAG_3DNOWEXT },
220  { "SSE", "sse", AV_CPU_FLAG_SSE },
221  { "SSE2", "sse2", AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW },
222  { "SSE3", "sse3", AV_CPU_FLAG_SSE3|AV_CPU_FLAG_SSE3SLOW },
223  { "SSSE3", "ssse3", AV_CPU_FLAG_SSSE3|AV_CPU_FLAG_ATOM },
224  { "SSE4.1", "sse4", AV_CPU_FLAG_SSE4 },
225  { "SSE4.2", "sse42", AV_CPU_FLAG_SSE42 },
226  { "AES-NI", "aesni", AV_CPU_FLAG_AESNI },
227  { "AVX", "avx", AV_CPU_FLAG_AVX },
228  { "XOP", "xop", AV_CPU_FLAG_XOP },
229  { "FMA3", "fma3", AV_CPU_FLAG_FMA3 },
230  { "FMA4", "fma4", AV_CPU_FLAG_FMA4 },
231  { "AVX2", "avx2", AV_CPU_FLAG_AVX2 },
232  { "AVX-512", "avx512", AV_CPU_FLAG_AVX512 },
233 #endif
234  { NULL }
235 };
236 
237 typedef struct CheckasmFuncVersion {
239  void *func;
240  int ok;
241  int cpu;
244 
245 /* Binary search tree node */
246 typedef struct CheckasmFunc {
247  struct CheckasmFunc *child[2];
249  uint8_t color; /* 0 = red, 1 = black */
250  char name[1];
251 } CheckasmFunc;
252 
253 /* Internal state */
254 static struct {
258  const char *current_test_name;
259  const char *bench_pattern;
263 
264  /* perf */
265  int nop_time;
266  int sysfd;
267 
268  int cpu_flag;
269  const char *cpu_flag_name;
270  const char *test_name;
271 } state;
272 
273 /* PRNG state */
275 
276 /* float compare support code */
277 static int is_negative(union av_intfloat32 u)
278 {
279  return u.i >> 31;
280 }
281 
282 int float_near_ulp(float a, float b, unsigned max_ulp)
283 {
284  union av_intfloat32 x, y;
285 
286  x.f = a;
287  y.f = b;
288 
289  if (is_negative(x) != is_negative(y)) {
290  // handle -0.0 == +0.0
291  return a == b;
292  }
293 
294  if (llabs((int64_t)x.i - y.i) <= max_ulp)
295  return 1;
296 
297  return 0;
298 }
299 
300 int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp,
301  unsigned len)
302 {
303  unsigned i;
304 
305  for (i = 0; i < len; i++) {
306  if (!float_near_ulp(a[i], b[i], max_ulp))
307  return 0;
308  }
309  return 1;
310 }
311 
312 int float_near_abs_eps(float a, float b, float eps)
313 {
314  float abs_diff = fabsf(a - b);
315  if (abs_diff < eps)
316  return 1;
317 
318  fprintf(stderr, "test failed comparing %g with %g (abs diff=%g with EPS=%g)\n", a, b, abs_diff, eps);
319 
320  return 0;
321 }
322 
323 int float_near_abs_eps_array(const float *a, const float *b, float eps,
324  unsigned len)
325 {
326  unsigned i;
327 
328  for (i = 0; i < len; i++) {
329  if (!float_near_abs_eps(a[i], b[i], eps))
330  return 0;
331  }
332  return 1;
333 }
334 
335 int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
336 {
337  return float_near_ulp(a, b, max_ulp) || float_near_abs_eps(a, b, eps);
338 }
339 
340 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
341  unsigned max_ulp, unsigned len)
342 {
343  unsigned i;
344 
345  for (i = 0; i < len; i++) {
346  if (!float_near_abs_eps_ulp(a[i], b[i], eps, max_ulp))
347  return 0;
348  }
349  return 1;
350 }
351 
352 int double_near_abs_eps(double a, double b, double eps)
353 {
354  double abs_diff = fabs(a - b);
355 
356  return abs_diff < eps;
357 }
358 
359 int double_near_abs_eps_array(const double *a, const double *b, double eps,
360  unsigned len)
361 {
362  unsigned i;
363 
364  for (i = 0; i < len; i++) {
365  if (!double_near_abs_eps(a[i], b[i], eps))
366  return 0;
367  }
368  return 1;
369 }
370 
371 /* Print colored text to stderr if the terminal supports it */
372 static void color_printf(int color, const char *fmt, ...)
373 {
374  static int use_color = -1;
375  va_list arg;
376 
377 #if HAVE_SETCONSOLETEXTATTRIBUTE
378  static HANDLE con;
379  static WORD org_attributes;
380 
381  if (use_color < 0) {
382  CONSOLE_SCREEN_BUFFER_INFO con_info;
383  con = GetStdHandle(STD_ERROR_HANDLE);
384  if (con && con != INVALID_HANDLE_VALUE && GetConsoleScreenBufferInfo(con, &con_info)) {
385  org_attributes = con_info.wAttributes;
386  use_color = 1;
387  } else
388  use_color = 0;
389  }
390  if (use_color)
391  SetConsoleTextAttribute(con, (org_attributes & 0xfff0) | (color & 0x0f));
392 #else
393  if (use_color < 0) {
394  const char *term = getenv("TERM");
395  use_color = term && strcmp(term, "dumb") && isatty(2);
396  }
397  if (use_color)
398  fprintf(stderr, "\x1b[%d;3%dm", (color & 0x08) >> 3, color & 0x07);
399 #endif
400 
401  va_start(arg, fmt);
402  vfprintf(stderr, fmt, arg);
403  va_end(arg);
404 
405  if (use_color) {
406 #if HAVE_SETCONSOLETEXTATTRIBUTE
407  SetConsoleTextAttribute(con, org_attributes);
408 #else
409  fprintf(stderr, "\x1b[0m");
410 #endif
411  }
412 }
413 
414 /* Deallocate a tree */
416 {
417  if (f) {
419  while (v) {
420  CheckasmFuncVersion *next = v->next;
421  free(v);
422  v = next;
423  }
424 
425  destroy_func_tree(f->child[0]);
426  destroy_func_tree(f->child[1]);
427  free(f);
428  }
429 }
430 
431 /* Allocate a zero-initialized block, clean up and exit on failure */
432 static void *checkasm_malloc(size_t size)
433 {
434  void *ptr = calloc(1, size);
435  if (!ptr) {
436  fprintf(stderr, "checkasm: malloc failed\n");
437  destroy_func_tree(state.funcs);
438  exit(1);
439  }
440  return ptr;
441 }
442 
443 /* Get the suffix of the specified cpu flag */
444 static const char *cpu_suffix(int cpu)
445 {
446  int i = FF_ARRAY_ELEMS(cpus);
447 
448  while (--i >= 0)
449  if (cpu & cpus[i].flag)
450  return cpus[i].suffix;
451 
452  return "c";
453 }
454 
455 static int cmp_nop(const void *a, const void *b)
456 {
457  return *(const uint16_t*)a - *(const uint16_t*)b;
458 }
459 
460 /* Measure the overhead of the timing code (in decicycles) */
461 static int measure_nop_time(void)
462 {
463  uint16_t nops[10000];
464  int i, nop_sum = 0;
465  av_unused const int sysfd = state.sysfd;
466 
467  uint64_t t = 0;
468  for (i = 0; i < 10000; i++) {
469  PERF_START(t);
470  PERF_STOP(t);
471  nops[i] = t;
472  }
473 
474  qsort(nops, 10000, sizeof(uint16_t), cmp_nop);
475  for (i = 2500; i < 7500; i++)
476  nop_sum += nops[i];
477 
478  return nop_sum / 500;
479 }
480 
481 /* Print benchmark results */
483 {
484  if (f) {
485  print_benchs(f->child[0]);
486 
487  /* Only print functions with at least one assembly version */
488  if (f->versions.cpu || f->versions.next) {
489  CheckasmFuncVersion *v = &f->versions;
490  do {
491  CheckasmPerf *p = &v->perf;
492  if (p->iterations) {
493  int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
494  printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
495  }
496  } while ((v = v->next));
497  }
498 
499  print_benchs(f->child[1]);
500  }
501 }
502 
503 /* ASCIIbetical sort except preserving natural order for numbers */
504 static int cmp_func_names(const char *a, const char *b)
505 {
506  const char *start = a;
507  int ascii_diff, digit_diff;
508 
509  for (; !(ascii_diff = *(const unsigned char*)a - *(const unsigned char*)b) && *a; a++, b++);
510  for (; av_isdigit(*a) && av_isdigit(*b); a++, b++);
511 
512  if (a > start && av_isdigit(a[-1]) && (digit_diff = av_isdigit(*a) - av_isdigit(*b)))
513  return digit_diff;
514 
515  return ascii_diff;
516 }
517 
518 /* Perform a tree rotation in the specified direction and return the new root */
520 {
521  CheckasmFunc *r = f->child[dir^1];
522  f->child[dir^1] = r->child[dir];
523  r->child[dir] = f;
524  r->color = f->color;
525  f->color = 0;
526  return r;
527 }
528 
529 #define is_red(f) ((f) && !(f)->color)
530 
531 /* Balance a left-leaning red-black tree at the specified node */
532 static void balance_tree(CheckasmFunc **root)
533 {
534  CheckasmFunc *f = *root;
535 
536  if (is_red(f->child[0]) && is_red(f->child[1])) {
537  f->color ^= 1;
538  f->child[0]->color = f->child[1]->color = 1;
539  }
540 
541  if (!is_red(f->child[0]) && is_red(f->child[1]))
542  *root = rotate_tree(f, 0); /* Rotate left */
543  else if (is_red(f->child[0]) && is_red(f->child[0]->child[0]))
544  *root = rotate_tree(f, 1); /* Rotate right */
545 }
546 
547 /* Get a node with the specified name, creating it if it doesn't exist */
548 static CheckasmFunc *get_func(CheckasmFunc **root, const char *name)
549 {
550  CheckasmFunc *f = *root;
551 
552  if (f) {
553  /* Search the tree for a matching node */
554  int cmp = cmp_func_names(name, f->name);
555  if (cmp) {
556  f = get_func(&f->child[cmp > 0], name);
557 
558  /* Rebalance the tree on the way up if a new node was inserted */
559  if (!f->versions.func)
560  balance_tree(root);
561  }
562  } else {
563  /* Allocate and insert a new node into the tree */
564  int name_length = strlen(name);
565  f = *root = checkasm_malloc(sizeof(CheckasmFunc) + name_length);
566  memcpy(f->name, name, name_length + 1);
567  }
568 
569  return f;
570 }
571 
572 /* Perform tests and benchmarks for the specified cpu flag if supported by the host */
573 static void check_cpu_flag(const char *name, int flag)
574 {
575  int old_cpu_flag = state.cpu_flag;
576 
577  flag |= old_cpu_flag;
578  av_force_cpu_flags(-1);
579  state.cpu_flag = flag & av_get_cpu_flags();
580  av_force_cpu_flags(state.cpu_flag);
581 
582  if (!flag || state.cpu_flag != old_cpu_flag) {
583  int i;
584 
585  state.cpu_flag_name = name;
586  for (i = 0; tests[i].func; i++) {
587  if (state.test_name && strcmp(tests[i].name, state.test_name))
588  continue;
589  state.current_test_name = tests[i].name;
590  tests[i].func();
591  }
592  }
593 }
594 
595 /* Print the name of the current CPU flag, but only do it once */
596 static void print_cpu_name(void)
597 {
598  if (state.cpu_flag_name) {
599  color_printf(COLOR_YELLOW, "%s:\n", state.cpu_flag_name);
600  state.cpu_flag_name = NULL;
601  }
602 }
603 
604 #if CONFIG_LINUX_PERF
605 static int bench_init_linux(void)
606 {
607  struct perf_event_attr attr = {
608  .type = PERF_TYPE_HARDWARE,
609  .size = sizeof(struct perf_event_attr),
610  .config = PERF_COUNT_HW_CPU_CYCLES,
611  .disabled = 1, // start counting only on demand
612  .exclude_kernel = 1,
613  .exclude_hv = 1,
614  };
615 
616  printf("benchmarking with Linux Perf Monitoring API\n");
617 
618  state.sysfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0);
619  if (state.sysfd == -1) {
620  perror("syscall");
621  return -1;
622  }
623  return 0;
624 }
625 #endif
626 
627 #if !CONFIG_LINUX_PERF
628 static int bench_init_ffmpeg(void)
629 {
630 #ifdef AV_READ_TIME
631  printf("benchmarking with native FFmpeg timers\n");
632  return 0;
633 #else
634  fprintf(stderr, "checkasm: --bench is not supported on your system\n");
635  return -1;
636 #endif
637 }
638 #endif
639 
640 static int bench_init(void)
641 {
642 #if CONFIG_LINUX_PERF
643  int ret = bench_init_linux();
644 #else
645  int ret = bench_init_ffmpeg();
646 #endif
647  if (ret < 0)
648  return ret;
649 
650  state.nop_time = measure_nop_time();
651  printf("nop: %d.%d\n", state.nop_time/10, state.nop_time%10);
652  return 0;
653 }
654 
655 static void bench_uninit(void)
656 {
657 #if CONFIG_LINUX_PERF
658  if (state.sysfd > 0)
659  close(state.sysfd);
660 #endif
661 }
662 
663 int main(int argc, char *argv[])
664 {
665  unsigned int seed = av_get_random_seed();
666  int i, ret = 0;
667 
668 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
670  checkasm_checked_call = checkasm_checked_call_vfp;
671 #endif
672 
673  if (!tests[0].func || !cpus[0].flag) {
674  fprintf(stderr, "checkasm: no tests to perform\n");
675  return 0;
676  }
677 
678  while (argc > 1) {
679  if (!strncmp(argv[1], "--bench", 7)) {
680  if (bench_init() < 0)
681  return 1;
682  if (argv[1][7] == '=') {
683  state.bench_pattern = argv[1] + 8;
684  state.bench_pattern_len = strlen(state.bench_pattern);
685  } else
686  state.bench_pattern = "";
687  } else if (!strncmp(argv[1], "--test=", 7)) {
688  state.test_name = argv[1] + 7;
689  } else {
690  seed = strtoul(argv[1], NULL, 10);
691  }
692 
693  argc--;
694  argv++;
695  }
696 
697  fprintf(stderr, "checkasm: using random seed %u\n", seed);
698  av_lfg_init(&checkasm_lfg, seed);
699 
700  check_cpu_flag(NULL, 0);
701  for (i = 0; cpus[i].flag; i++)
702  check_cpu_flag(cpus[i].name, cpus[i].flag);
703 
704  if (state.num_failed) {
705  fprintf(stderr, "checkasm: %d of %d tests have failed\n", state.num_failed, state.num_checked);
706  ret = 1;
707  } else {
708  fprintf(stderr, "checkasm: all %d tests passed\n", state.num_checked);
709  if (state.bench_pattern) {
710  print_benchs(state.funcs);
711  }
712  }
713 
714  destroy_func_tree(state.funcs);
715  bench_uninit();
716  return ret;
717 }
718 
719 /* Decide whether or not the specified function needs to be tested and
720  * allocate/initialize data structures if needed. Returns a pointer to a
721  * reference function if the function should be tested, otherwise NULL */
722 void *checkasm_check_func(void *func, const char *name, ...)
723 {
724  char name_buf[256];
725  void *ref = func;
727  int name_length;
728  va_list arg;
729 
730  va_start(arg, name);
731  name_length = vsnprintf(name_buf, sizeof(name_buf), name, arg);
732  va_end(arg);
733 
734  if (!func || name_length <= 0 || name_length >= sizeof(name_buf))
735  return NULL;
736 
737  state.current_func = get_func(&state.funcs, name_buf);
738  state.funcs->color = 1;
739  v = &state.current_func->versions;
740 
741  if (v->func) {
742  CheckasmFuncVersion *prev;
743  do {
744  /* Only test functions that haven't already been tested */
745  if (v->func == func)
746  return NULL;
747 
748  if (v->ok)
749  ref = v->func;
750 
751  prev = v;
752  } while ((v = v->next));
753 
754  v = prev->next = checkasm_malloc(sizeof(CheckasmFuncVersion));
755  }
756 
757  v->func = func;
758  v->ok = 1;
759  v->cpu = state.cpu_flag;
760  state.current_func_ver = v;
761 
762  if (state.cpu_flag)
763  state.num_checked++;
764 
765  return ref;
766 }
767 
768 /* Decide whether or not the current function needs to be benchmarked */
770 {
771  return !state.num_failed && state.bench_pattern &&
772  !strncmp(state.current_func->name, state.bench_pattern, state.bench_pattern_len);
773 }
774 
775 /* Indicate that the current test has failed */
776 void checkasm_fail_func(const char *msg, ...)
777 {
778  if (state.current_func_ver->cpu && state.current_func_ver->ok) {
779  va_list arg;
780 
781  print_cpu_name();
782  fprintf(stderr, " %s_%s (", state.current_func->name, cpu_suffix(state.current_func_ver->cpu));
783  va_start(arg, msg);
784  vfprintf(stderr, msg, arg);
785  va_end(arg);
786  fprintf(stderr, ")\n");
787 
788  state.current_func_ver->ok = 0;
789  state.num_failed++;
790  }
791 }
792 
793 /* Get the benchmark context of the current function */
795 {
796  CheckasmPerf *perf = &state.current_func_ver->perf;
797  memset(perf, 0, sizeof(*perf));
798  perf->sysfd = state.sysfd;
799  return perf;
800 }
801 
802 /* Print the outcome of all tests performed since the last time this function was called */
803 void checkasm_report(const char *name, ...)
804 {
805  static int prev_checked, prev_failed, max_length;
806 
807  if (state.num_checked > prev_checked) {
808  int pad_length = max_length + 4;
809  va_list arg;
810 
811  print_cpu_name();
812  pad_length -= fprintf(stderr, " - %s.", state.current_test_name);
813  va_start(arg, name);
814  pad_length -= vfprintf(stderr, name, arg);
815  va_end(arg);
816  fprintf(stderr, "%*c", FFMAX(pad_length, 0) + 2, '[');
817 
818  if (state.num_failed == prev_failed)
819  color_printf(COLOR_GREEN, "OK");
820  else
821  color_printf(COLOR_RED, "FAILED");
822  fprintf(stderr, "]\n");
823 
824  prev_checked = state.num_checked;
825  prev_failed = state.num_failed;
826  } else if (!state.cpu_flag) {
827  /* Calculate the amount of padding required to make the output vertically aligned */
828  int length = strlen(state.current_test_name);
829  va_list arg;
830 
831  va_start(arg, name);
832  length += vsnprintf(NULL, 0, name, arg);
833  va_end(arg);
834 
835  if (length > max_length)
836  max_length = length;
837  }
838 }
Definition: lfg.h:27
const char * name
Definition: checkasm.c:72
static int bench_init_ffmpeg(void)
Definition: checkasm.c:628
static int cmp_nop(const void *a, const void *b)
Definition: checkasm.c:455
#define AV_CPU_FLAG_AVX
AVX functions: requires OS support even if YMM registers aren&#39;t used.
Definition: cpu.h:49
#define NULL
Definition: coverity.c:32
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:60
void checkasm_check_v210enc(void)
Definition: v210enc.c:81
static const struct @315 cpus[]
static int measure_nop_time(void)
Definition: checkasm.c:461
static void bench_uninit(void)
Definition: checkasm.c:655
static av_const int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
Definition: avstring.h:206
CheckasmFunc * current_func
Definition: checkasm.c:256
int float_near_abs_eps_array(const float *a, const float *b, float eps, unsigned len)
Definition: checkasm.c:323
static int is_negative(union av_intfloat32 u)
Definition: checkasm.c:277
uint64_t cycles
Definition: checkasm.h:207
CheckasmPerf * checkasm_get_perf_context(void)
Definition: checkasm.c:794
const char * fmt
Definition: avisynth_c.h:861
#define AV_CPU_FLAG_SSE
SSE functions.
Definition: cpu.h:35
void checkasm_check_vp9dsp(void)
Definition: vp9dsp.c:625
void checkasm_check_vf_threshold(void)
Definition: vf_threshold.c:78
#define vsnprintf
Definition: snprintf.h:36
void checkasm_check_flacdsp(void)
Definition: flacdsp.c:56
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
Definition: undefined.txt:36
#define AV_CPU_FLAG_CMOV
supports cmov instruction
Definition: cpu.h:53
void checkasm_check_h264pred(void)
Definition: h264pred.c:232
#define AV_CPU_FLAG_VFP
Definition: cpu.h:67
static const char * cpu_suffix(int cpu)
Definition: checkasm.c:444
void checkasm_check_afir(void)
Definition: af_afir.c:67
CheckasmFuncVersion * current_func_ver
Definition: checkasm.c:257
const char * test_name
Definition: checkasm.c:270
void checkasm_check_alacdsp(void)
Definition: alacdsp.c:115
static int cmp_func_names(const char *a, const char *b)
Definition: checkasm.c:504
int float_near_abs_eps(float a, float b, float eps)
Definition: checkasm.c:312
void * checkasm_check_func(void *func, const char *name,...)
Definition: checkasm.c:722
void checkasm_check_aacpsdsp(void)
Definition: aacpsdsp.c:215
CheckasmPerf perf
Definition: checkasm.c:242
void checkasm_check_colorspace(void)
void checkasm_check_vp8dsp(void)
Definition: vp8dsp.c:507
static const struct @314 tests[]
struct CheckasmFunc * child[2]
Definition: checkasm.c:247
uint8_t
const char * cpu_flag_name
Definition: checkasm.c:269
int checkasm_bench_func(void)
Definition: checkasm.c:769
#define f(width, name)
Definition: cbs_vp9.c:255
AVS_FilterInfo AVS_Value child
Definition: avisynth_c.h:807
#define AV_CPU_FLAG_FMA3
Haswell FMA3 functions.
Definition: cpu.h:55
char name[1]
Definition: checkasm.c:250
#define AV_CPU_FLAG_NEON
Definition: cpu.h:69
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
Definition: cpu.h:32
int main(int argc, char *argv[])
Definition: checkasm.c:663
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:252
#define AV_CPU_FLAG_ATOM
Atom processor, some SSSE3 instructions are slower.
Definition: cpu.h:45
#define COLOR_YELLOW
Definition: checkasm.c:53
void checkasm_check_sbrdsp(void)
Definition: sbrdsp.c:250
#define AV_CPU_FLAG_AVX2
AVX2 functions: requires OS support even if YMM registers aren&#39;t used.
Definition: cpu.h:54
#define AV_CPU_FLAG_SSE2SLOW
SSE2 supported, but usually not faster.
Definition: cpu.h:37
void checkasm_check_h264qpel(void)
Definition: h264qpel.c:50
ptrdiff_t size
Definition: opengl_enc.c:100
CheckasmFunc * funcs
Definition: checkasm.c:255
void checkasm_check_jpeg2000dsp(void)
Definition: jpeg2000dsp.c:91
#define AV_CPU_FLAG_XOP
Bulldozer XOP functions.
Definition: cpu.h:51
void checkasm_check_llviddspenc(void)
Definition: llviddspenc.c:104
int flag
Definition: checkasm.c:198
#define AV_CPU_FLAG_SSE42
Nehalem SSE4.2 functions.
Definition: cpu.h:47
#define isatty(fd)
Definition: checkasm.c:61
static CheckasmFunc * get_func(CheckasmFunc **root, const char *name)
Definition: checkasm.c:548
CheckasmFuncVersion versions
Definition: checkasm.c:248
const char * suffix
Definition: checkasm.c:197
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define AV_CPU_FLAG_SSSE3
Conroe SSSE3 functions.
Definition: cpu.h:43
unsigned short WORD
int float_near_ulp(float a, float b, unsigned max_ulp)
Definition: checkasm.c:282
void checkasm_check_h264dsp(void)
Definition: h264dsp.c:441
int num_checked
Definition: checkasm.c:261
#define COLOR_GREEN
Definition: checkasm.c:52
const char * r
Definition: vf_curves.c:114
const char * arg
Definition: jacosubdec.c:66
#define AV_CPU_FLAG_ARMV6T2
Definition: cpu.h:66
GLsizei GLsizei * length
Definition: opengl_enc.c:114
void checkasm_check_hevc_add_res(void)
Definition: hevc_add_res.c:74
static int bench_init(void)
Definition: checkasm.c:640
AVLFG checkasm_lfg
Definition: checkasm.c:274
#define AV_CPU_FLAG_AVX512
AVX-512 functions: requires OS support even if YMM/ZMM registers aren&#39;t used.
Definition: cpu.h:58
#define AV_CPU_FLAG_VFP_VM
VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations.
Definition: cpu.h:71
#define FFMAX(a, b)
Definition: common.h:94
void checkasm_check_videodsp(void)
Definition: videodsp.c:80
#define AV_CPU_FLAG_ARMV5TE
Definition: cpu.h:64
void checkasm_check_fixed_dsp(void)
Definition: fixed_dsp.c:132
#define b
Definition: input.c:41
static void print_benchs(CheckasmFunc *f)
Definition: checkasm.c:482
#define have_neon(flags)
Definition: cpu.h:26
void checkasm_check_utvideodsp(void)
Definition: utvideodsp.c:90
void checkasm_check_audiodsp(void)
Definition: audiodsp.c:51
#define AV_CPU_FLAG_SSE3
Prescott SSE3 functions.
Definition: cpu.h:40
void checkasm_check_nlmeans(void)
Definition: vf_nlmeans.c:31
PVOID HANDLE
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void checkasm_check_sw_rgb(void)
Definition: sw_rgb.c:114
#define is_red(f)
Definition: checkasm.c:529
void checkasm_check_exrdsp(void)
Definition: exrdsp.c:76
uint32_t i
Definition: intfloat.h:28
static av_always_inline int cmp(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
compares a block (either a full macroblock or a partition thereof) against a proposed motion-compensa...
Definition: motion_est.c:260
int dummy
Definition: motion.c:64
#define AV_CPU_FLAG_VFPV3
Definition: cpu.h:68
static void * checkasm_malloc(size_t size)
Definition: checkasm.c:432
const char * bench_pattern
Definition: checkasm.c:259
int iterations
Definition: checkasm.h:208
int bench_pattern_len
Definition: checkasm.c:260
void checkasm_report(const char *name,...)
Definition: checkasm.c:803
void checkasm_check_hevc_idct(void)
Definition: hevc_idct.c:86
#define FF_ARRAY_ELEMS(a)
int cpu_flag
Definition: checkasm.c:268
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:300
#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
Definition: cpu.h:34
int nop_time
Definition: checkasm.c:265
int double_near_abs_eps(double a, double b, double eps)
Definition: checkasm.c:352
void checkasm_check_vf_eq(void)
Definition: vf_eq.c:75
#define AV_CPU_FLAG_ARMV6
Definition: cpu.h:65
int num_failed
Definition: checkasm.c:262
#define AV_CPU_FLAG_SSE3SLOW
SSE3 supported, but usually not faster.
Definition: cpu.h:41
#define COLOR_RED
Definition: checkasm.c:51
void(* func)(void)
Definition: checkasm.c:73
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:31
static unsigned int seed
Definition: videogen.c:78
void checkasm_check_fmtconvert(void)
Definition: fmtconvert.c:44
#define PERF_START(t)
Definition: checkasm.h:256
static CheckasmFunc * rotate_tree(CheckasmFunc *f, int dir)
Definition: checkasm.c:519
#define AV_CPU_FLAG_FMA4
Bulldozer FMA4 functions.
Definition: cpu.h:52
#define AV_CPU_FLAG_SSE4
Penryn SSE4.1 functions.
Definition: cpu.h:46
#define AV_CPU_FLAG_AESNI
Advanced Encryption Standard functions.
Definition: cpu.h:48
#define AV_CPU_FLAG_VSX
ISA 2.06.
Definition: cpu.h:61
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
Definition: lfg.c:32
int sysfd
Definition: checkasm.c:266
void checkasm_check_llviddsp(void)
Definition: llviddsp.c:195
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
int double_near_abs_eps_array(const double *a, const double *b, double eps, unsigned len)
Definition: checkasm.c:359
static void color_printf(int color, const char *fmt,...)
Definition: checkasm.c:372
#define AV_CPU_FLAG_3DNOWEXT
AMD 3DNowExt.
Definition: cpu.h:39
void checkasm_check_float_dsp(void)
Definition: float_dsp.c:277
#define AV_CPU_FLAG_POWER8
ISA 2.07.
Definition: cpu.h:62
void checkasm_check_huffyuvdsp(void)
Definition: huffyuvdsp.c:67
void checkasm_check_vf_gblur(void)
Definition: vf_gblur.c:36
void checkasm_check_opusdsp(void)
Definition: opusdsp.c:83
int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
Definition: checkasm.c:335
static void destroy_func_tree(CheckasmFunc *f)
Definition: checkasm.c:415
common internal and external API header
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
struct CheckasmFuncVersion * next
Definition: checkasm.c:238
#define AV_CPU_FLAG_ARMV8
Definition: cpu.h:70
const char * current_test_name
Definition: checkasm.c:258
static void check_cpu_flag(const char *name, int flag)
Definition: checkasm.c:573
static int use_color
Definition: log.c:121
void checkasm_check_v210dec(void)
Definition: v210dec.c:47
#define have_vfp(flags)
Definition: cpu.h:27
int len
printf("static const uint8_t my_array[100] = {\n")
void checkasm_check_pixblockdsp(void)
Definition: pixblockdsp.c:81
void checkasm_check_hevc_sao(void)
Definition: hevc_sao.c:131
static struct @316 state
#define PERF_STOP(t)
Definition: checkasm.h:257
void checkasm_check_synth_filter(void)
Definition: synth_filter.c:44
int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps, unsigned max_ulp, unsigned len)
Definition: checkasm.c:340
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:36
void INT64 start
Definition: avisynth_c.h:766
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:120
void checkasm_fail_func(const char *msg,...)
Definition: checkasm.c:776
#define INVALID_HANDLE_VALUE
Definition: windows2linux.h:47
void checkasm_check_bswapdsp(void)
Definition: bswapdsp.c:59
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:65
void checkasm_check_g722dsp(void)
Definition: g722dsp.c:53
static void balance_tree(CheckasmFunc **root)
Definition: checkasm.c:532
void checkasm_check_vf_hflip(void)
Definition: vf_hflip.c:69
void checkasm_check_blend(void)
Definition: vf_blend.c:88
#define av_unused
Definition: attributes.h:125
const char * name
Definition: opengl_enc.c:102
static void print_cpu_name(void)
Definition: checkasm.c:596
void checkasm_check_blockdsp(void)
Definition: blockdsp.c:54
uint8_t color
Definition: checkasm.c:249