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 && HAVE_GETSTDHANDLE
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_pel", checkasm_check_hevc_pel },
120  { "hevc_sao", checkasm_check_hevc_sao },
121  #endif
122  #if CONFIG_HUFFYUV_DECODER
123  { "huffyuvdsp", checkasm_check_huffyuvdsp },
124  #endif
125  #if CONFIG_JPEG2000_DECODER
126  { "jpeg2000dsp", checkasm_check_jpeg2000dsp },
127  #endif
128  #if CONFIG_HUFFYUVDSP
129  { "llviddsp", checkasm_check_llviddsp },
130  #endif
131  #if CONFIG_LLVIDENCDSP
132  { "llviddspenc", checkasm_check_llviddspenc },
133  #endif
134  #if CONFIG_OPUS_DECODER
135  { "opusdsp", checkasm_check_opusdsp },
136  #endif
137  #if CONFIG_PIXBLOCKDSP
138  { "pixblockdsp", checkasm_check_pixblockdsp },
139  #endif
140  #if CONFIG_UTVIDEO_DECODER
141  { "utvideodsp", checkasm_check_utvideodsp },
142  #endif
143  #if CONFIG_V210_DECODER
144  { "v210dec", checkasm_check_v210dec },
145  #endif
146  #if CONFIG_V210_ENCODER
147  { "v210enc", checkasm_check_v210enc },
148  #endif
149  #if CONFIG_VP8DSP
150  { "vp8dsp", checkasm_check_vp8dsp },
151  #endif
152  #if CONFIG_VP9_DECODER
153  { "vp9dsp", checkasm_check_vp9dsp },
154  #endif
155  #if CONFIG_VIDEODSP
156  { "videodsp", checkasm_check_videodsp },
157  #endif
158 #endif
159 #if CONFIG_AVFILTER
160  #if CONFIG_AFIR_FILTER
161  { "af_afir", checkasm_check_afir },
162  #endif
163  #if CONFIG_BLEND_FILTER
164  { "vf_blend", checkasm_check_blend },
165  #endif
166  #if CONFIG_COLORSPACE_FILTER
167  { "vf_colorspace", checkasm_check_colorspace },
168  #endif
169  #if CONFIG_EQ_FILTER
170  { "vf_eq", checkasm_check_vf_eq },
171  #endif
172  #if CONFIG_GBLUR_FILTER
173  { "vf_gblur", checkasm_check_vf_gblur },
174  #endif
175  #if CONFIG_HFLIP_FILTER
176  { "vf_hflip", checkasm_check_vf_hflip },
177  #endif
178  #if CONFIG_NLMEANS_FILTER
179  { "vf_nlmeans", checkasm_check_nlmeans },
180  #endif
181  #if CONFIG_THRESHOLD_FILTER
182  { "vf_threshold", checkasm_check_vf_threshold },
183  #endif
184 #endif
185 #if CONFIG_SWSCALE
186  { "sw_gbrp", checkasm_check_sw_gbrp },
187  { "sw_rgb", checkasm_check_sw_rgb },
188  { "sw_scale", checkasm_check_sw_scale },
189 #endif
190 #if CONFIG_AVUTIL
191  { "fixed_dsp", checkasm_check_fixed_dsp },
192  { "float_dsp", checkasm_check_float_dsp },
193  { "av_tx", checkasm_check_av_tx },
194 #endif
195  { NULL }
196 };
197 
198 /* List of cpu flags to check */
199 static const struct {
200  const char *name;
201  const char *suffix;
202  int flag;
203 } cpus[] = {
204 #if ARCH_AARCH64
205  { "ARMV8", "armv8", AV_CPU_FLAG_ARMV8 },
206  { "NEON", "neon", AV_CPU_FLAG_NEON },
207 #elif ARCH_ARM
208  { "ARMV5TE", "armv5te", AV_CPU_FLAG_ARMV5TE },
209  { "ARMV6", "armv6", AV_CPU_FLAG_ARMV6 },
210  { "ARMV6T2", "armv6t2", AV_CPU_FLAG_ARMV6T2 },
211  { "VFP", "vfp", AV_CPU_FLAG_VFP },
212  { "VFP_VM", "vfp_vm", AV_CPU_FLAG_VFP_VM },
213  { "VFPV3", "vfp3", AV_CPU_FLAG_VFPV3 },
214  { "NEON", "neon", AV_CPU_FLAG_NEON },
215 #elif ARCH_PPC
216  { "ALTIVEC", "altivec", AV_CPU_FLAG_ALTIVEC },
217  { "VSX", "vsx", AV_CPU_FLAG_VSX },
218  { "POWER8", "power8", AV_CPU_FLAG_POWER8 },
219 #elif ARCH_MIPS
220  { "MMI", "mmi", AV_CPU_FLAG_MMI },
221  { "MSA", "msa", AV_CPU_FLAG_MSA },
222 #elif ARCH_X86
223  { "MMX", "mmx", AV_CPU_FLAG_MMX|AV_CPU_FLAG_CMOV },
224  { "MMXEXT", "mmxext", AV_CPU_FLAG_MMXEXT },
225  { "3DNOW", "3dnow", AV_CPU_FLAG_3DNOW },
226  { "3DNOWEXT", "3dnowext", AV_CPU_FLAG_3DNOWEXT },
227  { "SSE", "sse", AV_CPU_FLAG_SSE },
228  { "SSE2", "sse2", AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW },
229  { "SSE3", "sse3", AV_CPU_FLAG_SSE3|AV_CPU_FLAG_SSE3SLOW },
230  { "SSSE3", "ssse3", AV_CPU_FLAG_SSSE3|AV_CPU_FLAG_ATOM },
231  { "SSE4.1", "sse4", AV_CPU_FLAG_SSE4 },
232  { "SSE4.2", "sse42", AV_CPU_FLAG_SSE42 },
233  { "AES-NI", "aesni", AV_CPU_FLAG_AESNI },
234  { "AVX", "avx", AV_CPU_FLAG_AVX },
235  { "XOP", "xop", AV_CPU_FLAG_XOP },
236  { "FMA3", "fma3", AV_CPU_FLAG_FMA3 },
237  { "FMA4", "fma4", AV_CPU_FLAG_FMA4 },
238  { "AVX2", "avx2", AV_CPU_FLAG_AVX2 },
239  { "AVX-512", "avx512", AV_CPU_FLAG_AVX512 },
240 #elif ARCH_LOONGARCH
241  { "LSX", "lsx", AV_CPU_FLAG_LSX },
242  { "LASX", "lasx", AV_CPU_FLAG_LASX },
243 #endif
244  { NULL }
245 };
246 
247 typedef struct CheckasmFuncVersion {
249  void *func;
250  int ok;
251  int cpu;
254 
255 /* Binary search tree node */
256 typedef struct CheckasmFunc {
257  struct CheckasmFunc *child[2];
259  uint8_t color; /* 0 = red, 1 = black */
260  char name[1];
261 } CheckasmFunc;
262 
263 /* Internal state */
264 static struct {
268  const char *current_test_name;
269  const char *bench_pattern;
273 
274  /* perf */
275  int nop_time;
276  int sysfd;
277 
278  int cpu_flag;
279  const char *cpu_flag_name;
280  const char *test_name;
281  int verbose;
282 } state;
283 
284 /* PRNG state */
286 
287 /* float compare support code */
288 static int is_negative(union av_intfloat32 u)
289 {
290  return u.i >> 31;
291 }
292 
293 int float_near_ulp(float a, float b, unsigned max_ulp)
294 {
295  union av_intfloat32 x, y;
296 
297  x.f = a;
298  y.f = b;
299 
300  if (is_negative(x) != is_negative(y)) {
301  // handle -0.0 == +0.0
302  return a == b;
303  }
304 
305  if (llabs((int64_t)x.i - y.i) <= max_ulp)
306  return 1;
307 
308  return 0;
309 }
310 
311 int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp,
312  unsigned len)
313 {
314  unsigned i;
315 
316  for (i = 0; i < len; i++) {
317  if (!float_near_ulp(a[i], b[i], max_ulp))
318  return 0;
319  }
320  return 1;
321 }
322 
323 int float_near_abs_eps(float a, float b, float eps)
324 {
325  float abs_diff = fabsf(a - b);
326  if (abs_diff < eps)
327  return 1;
328 
329  fprintf(stderr, "test failed comparing %g with %g (abs diff=%g with EPS=%g)\n", a, b, abs_diff, eps);
330 
331  return 0;
332 }
333 
334 int float_near_abs_eps_array(const float *a, const float *b, float eps,
335  unsigned len)
336 {
337  unsigned i;
338 
339  for (i = 0; i < len; i++) {
340  if (!float_near_abs_eps(a[i], b[i], eps))
341  return 0;
342  }
343  return 1;
344 }
345 
346 int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
347 {
348  return float_near_ulp(a, b, max_ulp) || float_near_abs_eps(a, b, eps);
349 }
350 
351 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
352  unsigned max_ulp, unsigned len)
353 {
354  unsigned i;
355 
356  for (i = 0; i < len; i++) {
357  if (!float_near_abs_eps_ulp(a[i], b[i], eps, max_ulp))
358  return 0;
359  }
360  return 1;
361 }
362 
363 int double_near_abs_eps(double a, double b, double eps)
364 {
365  double abs_diff = fabs(a - b);
366 
367  return abs_diff < eps;
368 }
369 
370 int double_near_abs_eps_array(const double *a, const double *b, double eps,
371  unsigned len)
372 {
373  unsigned i;
374 
375  for (i = 0; i < len; i++) {
376  if (!double_near_abs_eps(a[i], b[i], eps))
377  return 0;
378  }
379  return 1;
380 }
381 
382 /* Print colored text to stderr if the terminal supports it */
383 static void color_printf(int color, const char *fmt, ...)
384 {
385  static int use_color = -1;
386  va_list arg;
387 
388 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
389  static HANDLE con;
390  static WORD org_attributes;
391 
392  if (use_color < 0) {
393  CONSOLE_SCREEN_BUFFER_INFO con_info;
394  con = GetStdHandle(STD_ERROR_HANDLE);
395  if (con && con != INVALID_HANDLE_VALUE && GetConsoleScreenBufferInfo(con, &con_info)) {
396  org_attributes = con_info.wAttributes;
397  use_color = 1;
398  } else
399  use_color = 0;
400  }
401  if (use_color)
402  SetConsoleTextAttribute(con, (org_attributes & 0xfff0) | (color & 0x0f));
403 #else
404  if (use_color < 0) {
405  const char *term = getenv("TERM");
406  use_color = term && strcmp(term, "dumb") && isatty(2);
407  }
408  if (use_color)
409  fprintf(stderr, "\x1b[%d;3%dm", (color & 0x08) >> 3, color & 0x07);
410 #endif
411 
412  va_start(arg, fmt);
413  vfprintf(stderr, fmt, arg);
414  va_end(arg);
415 
416  if (use_color) {
417 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
418  SetConsoleTextAttribute(con, org_attributes);
419 #else
420  fprintf(stderr, "\x1b[0m");
421 #endif
422  }
423 }
424 
425 /* Deallocate a tree */
427 {
428  if (f) {
429  CheckasmFuncVersion *v = f->versions.next;
430  while (v) {
431  CheckasmFuncVersion *next = v->next;
432  free(v);
433  v = next;
434  }
435 
436  destroy_func_tree(f->child[0]);
437  destroy_func_tree(f->child[1]);
438  free(f);
439  }
440 }
441 
442 /* Allocate a zero-initialized block, clean up and exit on failure */
443 static void *checkasm_malloc(size_t size)
444 {
445  void *ptr = calloc(1, size);
446  if (!ptr) {
447  fprintf(stderr, "checkasm: malloc failed\n");
448  destroy_func_tree(state.funcs);
449  exit(1);
450  }
451  return ptr;
452 }
453 
454 /* Get the suffix of the specified cpu flag */
455 static const char *cpu_suffix(int cpu)
456 {
457  int i = FF_ARRAY_ELEMS(cpus);
458 
459  while (--i >= 0)
460  if (cpu & cpus[i].flag)
461  return cpus[i].suffix;
462 
463  return "c";
464 }
465 
466 static int cmp_nop(const void *a, const void *b)
467 {
468  return *(const uint16_t*)a - *(const uint16_t*)b;
469 }
470 
471 /* Measure the overhead of the timing code (in decicycles) */
472 static int measure_nop_time(void)
473 {
474  uint16_t nops[10000];
475  int i, nop_sum = 0;
476  av_unused const int sysfd = state.sysfd;
477 
478  uint64_t t = 0;
479  for (i = 0; i < 10000; i++) {
480  PERF_START(t);
481  PERF_STOP(t);
482  nops[i] = t;
483  }
484 
485  qsort(nops, 10000, sizeof(uint16_t), cmp_nop);
486  for (i = 2500; i < 7500; i++)
487  nop_sum += nops[i];
488 
489  return nop_sum / 500;
490 }
491 
492 /* Print benchmark results */
494 {
495  if (f) {
496  print_benchs(f->child[0]);
497 
498  /* Only print functions with at least one assembly version */
499  if (f->versions.cpu || f->versions.next) {
500  CheckasmFuncVersion *v = &f->versions;
501  do {
502  CheckasmPerf *p = &v->perf;
503  if (p->iterations) {
504  int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
505  printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
506  }
507  } while ((v = v->next));
508  }
509 
510  print_benchs(f->child[1]);
511  }
512 }
513 
514 /* ASCIIbetical sort except preserving natural order for numbers */
515 static int cmp_func_names(const char *a, const char *b)
516 {
517  const char *start = a;
518  int ascii_diff, digit_diff;
519 
520  for (; !(ascii_diff = *(const unsigned char*)a - *(const unsigned char*)b) && *a; a++, b++);
521  for (; av_isdigit(*a) && av_isdigit(*b); a++, b++);
522 
523  if (a > start && av_isdigit(a[-1]) && (digit_diff = av_isdigit(*a) - av_isdigit(*b)))
524  return digit_diff;
525 
526  return ascii_diff;
527 }
528 
529 /* Perform a tree rotation in the specified direction and return the new root */
531 {
532  CheckasmFunc *r = f->child[dir^1];
533  f->child[dir^1] = r->child[dir];
534  r->child[dir] = f;
535  r->color = f->color;
536  f->color = 0;
537  return r;
538 }
539 
540 #define is_red(f) ((f) && !(f)->color)
541 
542 /* Balance a left-leaning red-black tree at the specified node */
543 static void balance_tree(CheckasmFunc **root)
544 {
545  CheckasmFunc *f = *root;
546 
547  if (is_red(f->child[0]) && is_red(f->child[1])) {
548  f->color ^= 1;
549  f->child[0]->color = f->child[1]->color = 1;
550  }
551 
552  if (!is_red(f->child[0]) && is_red(f->child[1]))
553  *root = rotate_tree(f, 0); /* Rotate left */
554  else if (is_red(f->child[0]) && is_red(f->child[0]->child[0]))
555  *root = rotate_tree(f, 1); /* Rotate right */
556 }
557 
558 /* Get a node with the specified name, creating it if it doesn't exist */
559 static CheckasmFunc *get_func(CheckasmFunc **root, const char *name)
560 {
561  CheckasmFunc *f = *root;
562 
563  if (f) {
564  /* Search the tree for a matching node */
565  int cmp = cmp_func_names(name, f->name);
566  if (cmp) {
567  f = get_func(&f->child[cmp > 0], name);
568 
569  /* Rebalance the tree on the way up if a new node was inserted */
570  if (!f->versions.func)
571  balance_tree(root);
572  }
573  } else {
574  /* Allocate and insert a new node into the tree */
575  int name_length = strlen(name);
576  f = *root = checkasm_malloc(sizeof(CheckasmFunc) + name_length);
577  memcpy(f->name, name, name_length + 1);
578  }
579 
580  return f;
581 }
582 
583 /* Perform tests and benchmarks for the specified cpu flag if supported by the host */
584 static void check_cpu_flag(const char *name, int flag)
585 {
586  int old_cpu_flag = state.cpu_flag;
587 
588  flag |= old_cpu_flag;
589  av_force_cpu_flags(-1);
590  state.cpu_flag = flag & av_get_cpu_flags();
591  av_force_cpu_flags(state.cpu_flag);
592 
593  if (!flag || state.cpu_flag != old_cpu_flag) {
594  int i;
595 
596  state.cpu_flag_name = name;
597  for (i = 0; tests[i].func; i++) {
598  if (state.test_name && strcmp(tests[i].name, state.test_name))
599  continue;
600  state.current_test_name = tests[i].name;
601  tests[i].func();
602  }
603  }
604 }
605 
606 /* Print the name of the current CPU flag, but only do it once */
607 static void print_cpu_name(void)
608 {
609  if (state.cpu_flag_name) {
610  color_printf(COLOR_YELLOW, "%s:\n", state.cpu_flag_name);
611  state.cpu_flag_name = NULL;
612  }
613 }
614 
615 #if CONFIG_LINUX_PERF
616 static int bench_init_linux(void)
617 {
618  struct perf_event_attr attr = {
619  .type = PERF_TYPE_HARDWARE,
620  .size = sizeof(struct perf_event_attr),
621  .config = PERF_COUNT_HW_CPU_CYCLES,
622  .disabled = 1, // start counting only on demand
623  .exclude_kernel = 1,
624  .exclude_hv = 1,
625  };
626 
627  printf("benchmarking with Linux Perf Monitoring API\n");
628 
629  state.sysfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0);
630  if (state.sysfd == -1) {
631  perror("syscall");
632  return -1;
633  }
634  return 0;
635 }
636 #elif CONFIG_MACOS_KPERF
637 static int bench_init_kperf(void)
638 {
639  ff_kperf_init();
640  return 0;
641 }
642 #else
643 static int bench_init_ffmpeg(void)
644 {
645 #ifdef AV_READ_TIME
646  printf("benchmarking with native FFmpeg timers\n");
647  return 0;
648 #else
649  fprintf(stderr, "checkasm: --bench is not supported on your system\n");
650  return -1;
651 #endif
652 }
653 #endif
654 
655 static int bench_init(void)
656 {
657 #if CONFIG_LINUX_PERF
658  int ret = bench_init_linux();
659 #elif CONFIG_MACOS_KPERF
660  int ret = bench_init_kperf();
661 #else
662  int ret = bench_init_ffmpeg();
663 #endif
664  if (ret < 0)
665  return ret;
666 
667  state.nop_time = measure_nop_time();
668  printf("nop: %d.%d\n", state.nop_time/10, state.nop_time%10);
669  return 0;
670 }
671 
672 static void bench_uninit(void)
673 {
674 #if CONFIG_LINUX_PERF
675  if (state.sysfd > 0)
676  close(state.sysfd);
677 #endif
678 }
679 
680 int main(int argc, char *argv[])
681 {
682  unsigned int seed = av_get_random_seed();
683  int i, ret = 0;
684 
685 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
687  checkasm_checked_call = checkasm_checked_call_vfp;
688 #endif
689 
690  if (!tests[0].func || !cpus[0].flag) {
691  fprintf(stderr, "checkasm: no tests to perform\n");
692  return 0;
693  }
694 
695  while (argc > 1) {
696  if (!strncmp(argv[1], "--bench", 7)) {
697  if (bench_init() < 0)
698  return 1;
699  if (argv[1][7] == '=') {
700  state.bench_pattern = argv[1] + 8;
701  state.bench_pattern_len = strlen(state.bench_pattern);
702  } else
703  state.bench_pattern = "";
704  } else if (!strncmp(argv[1], "--test=", 7)) {
705  state.test_name = argv[1] + 7;
706  } else if (!strcmp(argv[1], "--verbose") || !strcmp(argv[1], "-v")) {
707  state.verbose = 1;
708  } else {
709  seed = strtoul(argv[1], NULL, 10);
710  }
711 
712  argc--;
713  argv++;
714  }
715 
716  fprintf(stderr, "checkasm: using random seed %u\n", seed);
718 
719  check_cpu_flag(NULL, 0);
720  for (i = 0; cpus[i].flag; i++)
722 
723  if (state.num_failed) {
724  fprintf(stderr, "checkasm: %d of %d tests have failed\n", state.num_failed, state.num_checked);
725  ret = 1;
726  } else {
727  fprintf(stderr, "checkasm: all %d tests passed\n", state.num_checked);
728  if (state.bench_pattern) {
729  print_benchs(state.funcs);
730  }
731  }
732 
733  destroy_func_tree(state.funcs);
734  bench_uninit();
735  return ret;
736 }
737 
738 /* Decide whether or not the specified function needs to be tested and
739  * allocate/initialize data structures if needed. Returns a pointer to a
740  * reference function if the function should be tested, otherwise NULL */
741 void *checkasm_check_func(void *func, const char *name, ...)
742 {
743  char name_buf[256];
744  void *ref = func;
746  int name_length;
747  va_list arg;
748 
749  va_start(arg, name);
750  name_length = vsnprintf(name_buf, sizeof(name_buf), name, arg);
751  va_end(arg);
752 
753  if (!func || name_length <= 0 || name_length >= sizeof(name_buf))
754  return NULL;
755 
756  state.current_func = get_func(&state.funcs, name_buf);
757  state.funcs->color = 1;
758  v = &state.current_func->versions;
759 
760  if (v->func) {
761  CheckasmFuncVersion *prev;
762  do {
763  /* Only test functions that haven't already been tested */
764  if (v->func == func)
765  return NULL;
766 
767  if (v->ok)
768  ref = v->func;
769 
770  prev = v;
771  } while ((v = v->next));
772 
773  v = prev->next = checkasm_malloc(sizeof(CheckasmFuncVersion));
774  }
775 
776  v->func = func;
777  v->ok = 1;
778  v->cpu = state.cpu_flag;
779  state.current_func_ver = v;
780 
781  if (state.cpu_flag)
782  state.num_checked++;
783 
784  return ref;
785 }
786 
787 /* Decide whether or not the current function needs to be benchmarked */
789 {
790  return !state.num_failed && state.bench_pattern &&
791  !strncmp(state.current_func->name, state.bench_pattern, state.bench_pattern_len);
792 }
793 
794 /* Indicate that the current test has failed */
795 void checkasm_fail_func(const char *msg, ...)
796 {
797  if (state.current_func_ver->cpu && state.current_func_ver->ok) {
798  va_list arg;
799 
800  print_cpu_name();
801  fprintf(stderr, " %s_%s (", state.current_func->name, cpu_suffix(state.current_func_ver->cpu));
802  va_start(arg, msg);
803  vfprintf(stderr, msg, arg);
804  va_end(arg);
805  fprintf(stderr, ")\n");
806 
807  state.current_func_ver->ok = 0;
808  state.num_failed++;
809  }
810 }
811 
812 /* Get the benchmark context of the current function */
814 {
815  CheckasmPerf *perf = &state.current_func_ver->perf;
816  memset(perf, 0, sizeof(*perf));
817  perf->sysfd = state.sysfd;
818  return perf;
819 }
820 
821 /* Print the outcome of all tests performed since the last time this function was called */
822 void checkasm_report(const char *name, ...)
823 {
824  static int prev_checked, prev_failed, max_length;
825 
826  if (state.num_checked > prev_checked) {
827  int pad_length = max_length + 4;
828  va_list arg;
829 
830  print_cpu_name();
831  pad_length -= fprintf(stderr, " - %s.", state.current_test_name);
832  va_start(arg, name);
833  pad_length -= vfprintf(stderr, name, arg);
834  va_end(arg);
835  fprintf(stderr, "%*c", FFMAX(pad_length, 0) + 2, '[');
836 
837  if (state.num_failed == prev_failed)
838  color_printf(COLOR_GREEN, "OK");
839  else
840  color_printf(COLOR_RED, "FAILED");
841  fprintf(stderr, "]\n");
842 
843  prev_checked = state.num_checked;
844  prev_failed = state.num_failed;
845  } else if (!state.cpu_flag) {
846  /* Calculate the amount of padding required to make the output vertically aligned */
847  int length = strlen(state.current_test_name);
848  va_list arg;
849 
850  va_start(arg, name);
851  length += vsnprintf(NULL, 0, name, arg);
852  va_end(arg);
853 
854  if (length > max_length)
855  max_length = length;
856  }
857 }
858 
859 #define DEF_CHECKASM_CHECK_FUNC(type, fmt) \
860 int checkasm_check_##type(const char *const file, const int line, \
861  const type *buf1, ptrdiff_t stride1, \
862  const type *buf2, ptrdiff_t stride2, \
863  const int w, int h, const char *const name) \
864 { \
865  int y = 0; \
866  stride1 /= sizeof(*buf1); \
867  stride2 /= sizeof(*buf2); \
868  for (y = 0; y < h; y++) \
869  if (memcmp(&buf1[y*stride1], &buf2[y*stride2], w*sizeof(*buf1))) \
870  break; \
871  if (y == h) \
872  return 0; \
873  checkasm_fail_func("%s:%d", file, line); \
874  if (!state.verbose) \
875  return 1; \
876  fprintf(stderr, "%s:\n", name); \
877  while (h--) { \
878  for (int x = 0; x < w; x++) \
879  fprintf(stderr, " " fmt, buf1[x]); \
880  fprintf(stderr, " "); \
881  for (int x = 0; x < w; x++) \
882  fprintf(stderr, " " fmt, buf2[x]); \
883  fprintf(stderr, " "); \
884  for (int x = 0; x < w; x++) \
885  fprintf(stderr, "%c", buf1[x] != buf2[x] ? 'x' : '.'); \
886  buf1 += stride1; \
887  buf2 += stride2; \
888  fprintf(stderr, "\n"); \
889  } \
890  return 1; \
891 }
892 
893 DEF_CHECKASM_CHECK_FUNC(uint8_t, "%02x")
894 DEF_CHECKASM_CHECK_FUNC(uint16_t, "%04x")
895 DEF_CHECKASM_CHECK_FUNC(int16_t, "%6d")
checkasm_check_nlmeans
void checkasm_check_nlmeans(void)
Definition: vf_nlmeans.c:31
AV_CPU_FLAG_VFP
#define AV_CPU_FLAG_VFP
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void checkasm_check_sw_gbrp(void)
Definition: sw_gbrp.c:401
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int bench_pattern_len
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void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:70
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void checkasm_check_vp8dsp(void)
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#define AV_CPU_FLAG_SSE3
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static void destroy_func_tree(CheckasmFunc *f)
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void checkasm_check_videodsp(void)
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static int cmp_nop(const void *a, const void *b)
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void checkasm_check_alacdsp(void)
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#define AV_CPU_FLAG_LSX
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static const struct @320 cpus[]
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int float_near_abs_eps_array(const float *a, const float *b, float eps, unsigned len)
Definition: checkasm.c:334
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#define AV_CPU_FLAG_SSE3SLOW
SSE3 supported, but usually not faster.
Definition: cpu.h:39
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Definition: checkasm.c:256
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const char * name
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const char * bench_pattern
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#define av_unused
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void checkasm_check_hevc_idct(void)
Definition: hevc_idct.c:87
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static struct @321 state
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Definition: sw_scale.c:238
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struct CheckasmFunc * child[2]
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void checkasm_check_afir(void)
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static void print_cpu_name(void)
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#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
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uint32_t i
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int float_near_abs_eps(float a, float b, float eps)
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#define b
Definition: input.c:40
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Definition: aacpsdsp.c:234
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static void bench_uninit(void)
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int cpu_flag
Definition: checkasm.c:278
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#define FFMAX(a, b)
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int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:98
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static const char * cpu_suffix(int cpu)
Definition: checkasm.c:455
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int sysfd
Definition: checkasm.h:217
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void checkasm_check_llviddspenc(void)
Definition: llviddspenc.c:104
intfloat.h
checkasm_check_h264dsp
void checkasm_check_h264dsp(void)
Definition: h264dsp.c:442
tf_sess_config.config
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Definition: tf_sess_config.py:33
color_printf
static void color_printf(int color, const char *fmt,...)
Definition: checkasm.c:383
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uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:120
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int main(int argc, char *argv[])
Definition: checkasm.c:680
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#define AV_CPU_FLAG_SSSE3
Conroe SSSE3 functions.
Definition: cpu.h:41
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int double_near_abs_eps(double a, double b, double eps)
Definition: checkasm.c:363
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Definition: checkasm.h:216
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const char * current_test_name
Definition: checkasm.c:268
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#define PERF_START(t)
Definition: checkasm.h:270
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static CheckasmFunc * rotate_tree(CheckasmFunc *f, int dir)
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#define AV_CPU_FLAG_XOP
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Definition: cpu.h:49
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void checkasm_check_vp9dsp(void)
Definition: vp9dsp.c:626
checkasm.h
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void checkasm_check_vf_threshold(void)
Definition: vf_threshold.c:79
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void checkasm_check_vf_gblur(void)
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#define AV_CPU_FLAG_3DNOWEXT
AMD 3DNowExt.
Definition: cpu.h:37
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int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
Definition: checkasm.c:346
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ISA 2.06.
Definition: cpu.h:60
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static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
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int num_failed
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void checkasm_check_float_dsp(void)
Definition: float_dsp.c:282
AV_CPU_FLAG_AVX512
#define AV_CPU_FLAG_AVX512
AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used.
Definition: cpu.h:56
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static int bench_init(void)
Definition: checkasm.c:655
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void checkasm_check_pixblockdsp(void)
Definition: pixblockdsp.c:82
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CheckasmFuncVersion
Definition: checkasm.c:247
COLOR_YELLOW
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int nop_time
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CheckasmPerf perf
Definition: checkasm.c:252
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void checkasm_report(const char *name,...)
Definition: checkasm.c:822
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static CheckasmFunc * get_func(CheckasmFunc **root, const char *name)
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void checkasm_fail_func(const char *msg,...)
Definition: checkasm.c:795
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void checkasm_check_sw_rgb(void)
Definition: sw_rgb.c:182
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void checkasm_check_hevc_sao(void)
Definition: hevc_sao.c:132
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int num_checked
Definition: checkasm.c:271
AV_CPU_FLAG_ARMV6
#define AV_CPU_FLAG_ARMV6
Definition: cpu.h:64
AV_CPU_FLAG_SSE4
#define AV_CPU_FLAG_SSE4
Penryn SSE4.1 functions.
Definition: cpu.h:44
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void checkasm_check_hevc_pel(void)
Definition: hevc_pel.c:534
cmp
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
f
#define f(width, name)
Definition: cbs_vp9.c:255
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int iterations
Definition: checkasm.h:219
CheckasmFuncVersion::ok
int ok
Definition: checkasm.c:250
arg
const char * arg
Definition: jacosubdec.c:67
func
void(* func)(void)
Definition: checkasm.c:73
fabs
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
NULL
#define NULL
Definition: coverity.c:32
measure_nop_time
static int measure_nop_time(void)
Definition: checkasm.c:472
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int double_near_abs_eps_array(const double *a, const double *b, double eps, unsigned len)
Definition: checkasm.c:370
AV_CPU_FLAG_LASX
#define AV_CPU_FLAG_LASX
Definition: cpu.h:78
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void checkasm_check_fmtconvert(void)
Definition: fmtconvert.c:46
AV_CPU_FLAG_MSA
#define AV_CPU_FLAG_MSA
Definition: cpu.h:74
COLOR_GREEN
#define COLOR_GREEN
Definition: checkasm.c:52
cpu.h
av_intfloat32
Definition: intfloat.h:27
AV_CPU_FLAG_CMOV
#define AV_CPU_FLAG_CMOV
supports cmov instruction
Definition: cpu.h:51
seed
static unsigned int seed
Definition: videogen.c:78
AV_CPU_FLAG_ALTIVEC
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:59
print_benchs
static void print_benchs(CheckasmFunc *f)
Definition: checkasm.c:493
current_func
CheckasmFunc * current_func
Definition: checkasm.c:266
AV_CPU_FLAG_SSE2
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:34
CheckasmFunc::color
uint8_t color
Definition: checkasm.c:259
AVLFG
Context structure for the Lagged Fibonacci PRNG.
Definition: lfg.h:33
AV_CPU_FLAG_AVX
#define AV_CPU_FLAG_AVX
AVX functions: requires OS support even if YMM registers aren't used.
Definition: cpu.h:47
AV_CPU_FLAG_FMA4
#define AV_CPU_FLAG_FMA4
Bulldozer FMA4 functions.
Definition: cpu.h:50
cpu.h
AV_CPU_FLAG_AVX2
#define AV_CPU_FLAG_AVX2
AVX2 functions: requires OS support even if YMM registers aren't used.
Definition: cpu.h:52
checkasm_check_llviddsp
void checkasm_check_llviddsp(void)
Definition: llviddsp.c:195
AV_CPU_FLAG_SSE2SLOW
#define AV_CPU_FLAG_SSE2SLOW
SSE2 supported, but usually not faster.
Definition: cpu.h:35
AV_CPU_FLAG_NEON
#define AV_CPU_FLAG_NEON
Definition: cpu.h:68
size
int size
Definition: twinvq_data.h:10344
DEF_CHECKASM_CHECK_FUNC
#define DEF_CHECKASM_CHECK_FUNC(type, fmt)
Definition: checkasm.c:859
tests
static const struct @319 tests[]
printf
printf("static const uint8_t my_array[100] = {\n")
sysfd
int sysfd
Definition: checkasm.c:276
have_neon
#define have_neon(flags)
Definition: cpu.h:26
CheckasmFuncVersion::func
void * func
Definition: checkasm.c:249
checkasm_check_h264pred
void checkasm_check_h264pred(void)
Definition: h264pred.c:233
av_isdigit
static av_const int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
Definition: avstring.h:211
AV_CPU_FLAG_FMA3
#define AV_CPU_FLAG_FMA3
Haswell FMA3 functions.
Definition: cpu.h:53
a
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:41
ff_kperf_init
void ff_kperf_init(void)
Definition: macos_kperf.c:99
checkasm_check_huffyuvdsp
void checkasm_check_huffyuvdsp(void)
Definition: huffyuvdsp.c:67
float_near_abs_eps_array_ulp
int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps, unsigned max_ulp, unsigned len)
Definition: checkasm.c:351
test_name
const char * test_name
Definition: checkasm.c:280
CheckasmPerf::cycles
uint64_t cycles
Definition: checkasm.h:218
checkasm_get_perf_context
CheckasmPerf * checkasm_get_perf_context(void)
Definition: checkasm.c:813
checkasm_check_fixed_dsp
void checkasm_check_fixed_dsp(void)
Definition: fixed_dsp.c:133
checkasm_check_colorspace
void checkasm_check_colorspace(void)
Definition: vf_colorspace.c:309
checkasm_check_utvideodsp
void checkasm_check_utvideodsp(void)
Definition: utvideodsp.c:91
is_negative
static int is_negative(union av_intfloat32 u)
Definition: checkasm.c:288
checkasm_check_audiodsp
void checkasm_check_audiodsp(void)
Definition: audiodsp.c:52
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
checkasm_check_flacdsp
void checkasm_check_flacdsp(void)
Definition: flacdsp.c:57
checkasm_check_func
void * checkasm_check_func(void *func, const char *name,...)
Definition: checkasm.c:741
AV_CPU_FLAG_SSE42
#define AV_CPU_FLAG_SSE42
Nehalem SSE4.2 functions.
Definition: cpu.h:45
CheckasmFuncVersion::next
struct CheckasmFuncVersion * next
Definition: checkasm.c:248
vsnprintf
#define vsnprintf
Definition: snprintf.h:36
common.h
use_color
static int use_color
Definition: log.c:121
checkasm_check_synth_filter
void checkasm_check_synth_filter(void)
Definition: synth_filter.c:46
cmp_func_names
static int cmp_func_names(const char *a, const char *b)
Definition: checkasm.c:515
AV_CPU_FLAG_ARMV8
#define AV_CPU_FLAG_ARMV8
Definition: cpu.h:69
len
int len
Definition: vorbis_enc_data.h:426
checkasm_check_g722dsp
void checkasm_check_g722dsp(void)
Definition: g722dsp.c:53
PERF_STOP
#define PERF_STOP(t)
Definition: checkasm.h:271
is_red
#define is_red(f)
Definition: checkasm.c:540
AV_CPU_FLAG_ATOM
#define AV_CPU_FLAG_ATOM
Atom processor, some SSSE3 instructions are slower.
Definition: cpu.h:43
have_vfp
#define have_vfp(flags)
Definition: cpu.h:27
checkasm_check_vf_hflip
void checkasm_check_vf_hflip(void)
Definition: vf_hflip.c:71
ret
ret
Definition: filter_design.txt:187
checkasm_check_blend
void checkasm_check_blend(void)
Definition: vf_blend.c:88
verbose
int verbose
Definition: checkasm.c:281
AV_CPU_FLAG_VFPV3
#define AV_CPU_FLAG_VFPV3
Definition: cpu.h:67
checkasm_check_bswapdsp
void checkasm_check_bswapdsp(void)
Definition: bswapdsp.c:60
AV_CPU_FLAG_ARMV5TE
#define AV_CPU_FLAG_ARMV5TE
Definition: cpu.h:63
AV_CPU_FLAG_MMX
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:29
suffix
const char * suffix
Definition: checkasm.c:201
checkasm_malloc
static void * checkasm_malloc(size_t size)
Definition: checkasm.c:443
checkasm_check_h264qpel
void checkasm_check_h264qpel(void)
Definition: h264qpel.c:51
random_seed.h
AV_CPU_FLAG_AESNI
#define AV_CPU_FLAG_AESNI
Advanced Encryption Standard functions.
Definition: cpu.h:46
checkasm_bench_func
int checkasm_bench_func(void)
Definition: checkasm.c:788
dummy
int dummy
Definition: motion.c:65
AV_CPU_FLAG_POWER8
#define AV_CPU_FLAG_POWER8
ISA 2.07.
Definition: cpu.h:61
cpu_flag_name
const char * cpu_flag_name
Definition: checkasm.c:279
AV_CPU_FLAG_SSE
#define AV_CPU_FLAG_SSE
SSE functions.
Definition: cpu.h:33
ref
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
float_near_ulp_array
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:311
AV_CPU_FLAG_MMXEXT
#define AV_CPU_FLAG_MMXEXT
SSE integer functions or AMD MMX ext.
Definition: cpu.h:30
checkasm_check_av_tx
void checkasm_check_av_tx(void)
Definition: av_tx.c:100
av_intfloat32::f
float f
Definition: intfloat.h:29
flag
int flag
Definition: checkasm.c:202
checkasm_check_v210enc
void checkasm_check_v210enc(void)
Definition: v210enc.c:82
checkasm_check_sbrdsp
void checkasm_check_sbrdsp(void)
Definition: sbrdsp.c:254
AV_CPU_FLAG_VFP_VM
#define AV_CPU_FLAG_VFP_VM
VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations.
Definition: cpu.h:70
AV_CPU_FLAG_MMI
#define AV_CPU_FLAG_MMI
Definition: cpu.h:73
checkasm_check_jpeg2000dsp
void checkasm_check_jpeg2000dsp(void)
Definition: jpeg2000dsp.c:92
d
d
Definition: ffmpeg_filter.c:153
checkasm_check_hevc_add_res
void checkasm_check_hevc_add_res(void)
Definition: hevc_add_res.c:86
int32_t
int32_t
Definition: audioconvert.c:56
float_near_ulp
int float_near_ulp(float a, float b, unsigned max_ulp)
Definition: checkasm.c:293
current_func_ver
CheckasmFuncVersion * current_func_ver
Definition: checkasm.c:267
check_cpu_flag
static void check_cpu_flag(const char *name, int flag)
Definition: checkasm.c:584
bench_init_ffmpeg
static int bench_init_ffmpeg(void)
Definition: checkasm.c:643
CheckasmFunc::versions
CheckasmFuncVersion versions
Definition: checkasm.c:258
isatty
#define isatty(fd)
Definition: checkasm.c:61
CheckasmFunc::name
char name[1]
Definition: checkasm.c:260
checkasm_check_exrdsp
void checkasm_check_exrdsp(void)
Definition: exrdsp.c:77
balance_tree
static void balance_tree(CheckasmFunc **root)
Definition: checkasm.c:543
AV_CPU_FLAG_ARMV6T2
#define AV_CPU_FLAG_ARMV6T2
Definition: cpu.h:65
funcs
CheckasmFunc * funcs
Definition: checkasm.c:265
checkasm_check_opusdsp
void checkasm_check_opusdsp(void)
Definition: opusdsp.c:85