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_qpel", checkasm_check_hevc_qpel },
120  { "hevc_qpel_uni", checkasm_check_hevc_qpel_uni },
121  { "hevc_qpel_uni_w", checkasm_check_hevc_qpel_uni_w },
122  { "hevc_qpel_bi", checkasm_check_hevc_qpel_bi },
123  { "hevc_qpel_bi_w", checkasm_check_hevc_qpel_bi_w },
124  { "hevc_epel", checkasm_check_hevc_epel },
125  { "hevc_epel_uni", checkasm_check_hevc_epel_uni },
126  { "hevc_epel_uni_w", checkasm_check_hevc_epel_uni_w },
127  { "hevc_epel_bi", checkasm_check_hevc_epel_bi },
128  { "hevc_epel_bi_w", checkasm_check_hevc_epel_bi_w },
129  { "hevc_sao", checkasm_check_hevc_sao },
130  #endif
131  #if CONFIG_HUFFYUV_DECODER
132  { "huffyuvdsp", checkasm_check_huffyuvdsp },
133  #endif
134  #if CONFIG_JPEG2000_DECODER
135  { "jpeg2000dsp", checkasm_check_jpeg2000dsp },
136  #endif
137  #if CONFIG_HUFFYUVDSP
138  { "llviddsp", checkasm_check_llviddsp },
139  #endif
140  #if CONFIG_LLVIDENCDSP
141  { "llviddspenc", checkasm_check_llviddspenc },
142  #endif
143  #if CONFIG_OPUS_DECODER
144  { "opusdsp", checkasm_check_opusdsp },
145  #endif
146  #if CONFIG_PIXBLOCKDSP
147  { "pixblockdsp", checkasm_check_pixblockdsp },
148  #endif
149  #if CONFIG_UTVIDEO_DECODER
150  { "utvideodsp", checkasm_check_utvideodsp },
151  #endif
152  #if CONFIG_V210_DECODER
153  { "v210dec", checkasm_check_v210dec },
154  #endif
155  #if CONFIG_V210_ENCODER
156  { "v210enc", checkasm_check_v210enc },
157  #endif
158  #if CONFIG_VP8DSP
159  { "vp8dsp", checkasm_check_vp8dsp },
160  #endif
161  #if CONFIG_VP9_DECODER
162  { "vp9dsp", checkasm_check_vp9dsp },
163  #endif
164  #if CONFIG_VIDEODSP
165  { "videodsp", checkasm_check_videodsp },
166  #endif
167 #endif
168 #if CONFIG_AVFILTER
169  #if CONFIG_AFIR_FILTER
170  { "af_afir", checkasm_check_afir },
171  #endif
172  #if CONFIG_BLEND_FILTER
173  { "vf_blend", checkasm_check_blend },
174  #endif
175  #if CONFIG_COLORSPACE_FILTER
176  { "vf_colorspace", checkasm_check_colorspace },
177  #endif
178  #if CONFIG_EQ_FILTER
179  { "vf_eq", checkasm_check_vf_eq },
180  #endif
181  #if CONFIG_GBLUR_FILTER
182  { "vf_gblur", checkasm_check_vf_gblur },
183  #endif
184  #if CONFIG_HFLIP_FILTER
185  { "vf_hflip", checkasm_check_vf_hflip },
186  #endif
187  #if CONFIG_NLMEANS_FILTER
188  { "vf_nlmeans", checkasm_check_nlmeans },
189  #endif
190  #if CONFIG_THRESHOLD_FILTER
191  { "vf_threshold", checkasm_check_vf_threshold },
192  #endif
193 #endif
194 #if CONFIG_SWSCALE
195  { "sw_rgb", checkasm_check_sw_rgb },
196  { "sw_scale", checkasm_check_sw_scale },
197 #endif
198 #if CONFIG_AVUTIL
199  { "fixed_dsp", checkasm_check_fixed_dsp },
200  { "float_dsp", checkasm_check_float_dsp },
201 #endif
202  { NULL }
203 };
204 
205 /* List of cpu flags to check */
206 static const struct {
207  const char *name;
208  const char *suffix;
209  int flag;
210 } cpus[] = {
211 #if ARCH_AARCH64
212  { "ARMV8", "armv8", AV_CPU_FLAG_ARMV8 },
213  { "NEON", "neon", AV_CPU_FLAG_NEON },
214 #elif ARCH_ARM
215  { "ARMV5TE", "armv5te", AV_CPU_FLAG_ARMV5TE },
216  { "ARMV6", "armv6", AV_CPU_FLAG_ARMV6 },
217  { "ARMV6T2", "armv6t2", AV_CPU_FLAG_ARMV6T2 },
218  { "VFP", "vfp", AV_CPU_FLAG_VFP },
219  { "VFP_VM", "vfp_vm", AV_CPU_FLAG_VFP_VM },
220  { "VFPV3", "vfp3", AV_CPU_FLAG_VFPV3 },
221  { "NEON", "neon", AV_CPU_FLAG_NEON },
222 #elif ARCH_PPC
223  { "ALTIVEC", "altivec", AV_CPU_FLAG_ALTIVEC },
224  { "VSX", "vsx", AV_CPU_FLAG_VSX },
225  { "POWER8", "power8", AV_CPU_FLAG_POWER8 },
226 #elif ARCH_MIPS
227  { "MMI", "mmi", AV_CPU_FLAG_MMI },
228  { "MSA", "msa", AV_CPU_FLAG_MSA },
229 #elif ARCH_X86
230  { "MMX", "mmx", AV_CPU_FLAG_MMX|AV_CPU_FLAG_CMOV },
231  { "MMXEXT", "mmxext", AV_CPU_FLAG_MMXEXT },
232  { "3DNOW", "3dnow", AV_CPU_FLAG_3DNOW },
233  { "3DNOWEXT", "3dnowext", AV_CPU_FLAG_3DNOWEXT },
234  { "SSE", "sse", AV_CPU_FLAG_SSE },
235  { "SSE2", "sse2", AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW },
236  { "SSE3", "sse3", AV_CPU_FLAG_SSE3|AV_CPU_FLAG_SSE3SLOW },
237  { "SSSE3", "ssse3", AV_CPU_FLAG_SSSE3|AV_CPU_FLAG_ATOM },
238  { "SSE4.1", "sse4", AV_CPU_FLAG_SSE4 },
239  { "SSE4.2", "sse42", AV_CPU_FLAG_SSE42 },
240  { "AES-NI", "aesni", AV_CPU_FLAG_AESNI },
241  { "AVX", "avx", AV_CPU_FLAG_AVX },
242  { "XOP", "xop", AV_CPU_FLAG_XOP },
243  { "FMA3", "fma3", AV_CPU_FLAG_FMA3 },
244  { "FMA4", "fma4", AV_CPU_FLAG_FMA4 },
245  { "AVX2", "avx2", AV_CPU_FLAG_AVX2 },
246  { "AVX-512", "avx512", AV_CPU_FLAG_AVX512 },
247 #endif
248  { NULL }
249 };
250 
251 typedef struct CheckasmFuncVersion {
253  void *func;
254  int ok;
255  int cpu;
258 
259 /* Binary search tree node */
260 typedef struct CheckasmFunc {
261  struct CheckasmFunc *child[2];
263  uint8_t color; /* 0 = red, 1 = black */
264  char name[1];
265 } CheckasmFunc;
266 
267 /* Internal state */
268 static struct {
272  const char *current_test_name;
273  const char *bench_pattern;
277 
278  /* perf */
279  int nop_time;
280  int sysfd;
281 
282  int cpu_flag;
283  const char *cpu_flag_name;
284  const char *test_name;
285  int verbose;
286 } state;
287 
288 /* PRNG state */
290 
291 /* float compare support code */
292 static int is_negative(union av_intfloat32 u)
293 {
294  return u.i >> 31;
295 }
296 
297 int float_near_ulp(float a, float b, unsigned max_ulp)
298 {
299  union av_intfloat32 x, y;
300 
301  x.f = a;
302  y.f = b;
303 
304  if (is_negative(x) != is_negative(y)) {
305  // handle -0.0 == +0.0
306  return a == b;
307  }
308 
309  if (llabs((int64_t)x.i - y.i) <= max_ulp)
310  return 1;
311 
312  return 0;
313 }
314 
315 int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp,
316  unsigned len)
317 {
318  unsigned i;
319 
320  for (i = 0; i < len; i++) {
321  if (!float_near_ulp(a[i], b[i], max_ulp))
322  return 0;
323  }
324  return 1;
325 }
326 
327 int float_near_abs_eps(float a, float b, float eps)
328 {
329  float abs_diff = fabsf(a - b);
330  if (abs_diff < eps)
331  return 1;
332 
333  fprintf(stderr, "test failed comparing %g with %g (abs diff=%g with EPS=%g)\n", a, b, abs_diff, eps);
334 
335  return 0;
336 }
337 
338 int float_near_abs_eps_array(const float *a, const float *b, float eps,
339  unsigned len)
340 {
341  unsigned i;
342 
343  for (i = 0; i < len; i++) {
344  if (!float_near_abs_eps(a[i], b[i], eps))
345  return 0;
346  }
347  return 1;
348 }
349 
350 int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
351 {
352  return float_near_ulp(a, b, max_ulp) || float_near_abs_eps(a, b, eps);
353 }
354 
355 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
356  unsigned max_ulp, unsigned len)
357 {
358  unsigned i;
359 
360  for (i = 0; i < len; i++) {
361  if (!float_near_abs_eps_ulp(a[i], b[i], eps, max_ulp))
362  return 0;
363  }
364  return 1;
365 }
366 
367 int double_near_abs_eps(double a, double b, double eps)
368 {
369  double abs_diff = fabs(a - b);
370 
371  return abs_diff < eps;
372 }
373 
374 int double_near_abs_eps_array(const double *a, const double *b, double eps,
375  unsigned len)
376 {
377  unsigned i;
378 
379  for (i = 0; i < len; i++) {
380  if (!double_near_abs_eps(a[i], b[i], eps))
381  return 0;
382  }
383  return 1;
384 }
385 
386 /* Print colored text to stderr if the terminal supports it */
387 static void color_printf(int color, const char *fmt, ...)
388 {
389  static int use_color = -1;
390  va_list arg;
391 
392 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
393  static HANDLE con;
394  static WORD org_attributes;
395 
396  if (use_color < 0) {
397  CONSOLE_SCREEN_BUFFER_INFO con_info;
398  con = GetStdHandle(STD_ERROR_HANDLE);
399  if (con && con != INVALID_HANDLE_VALUE && GetConsoleScreenBufferInfo(con, &con_info)) {
400  org_attributes = con_info.wAttributes;
401  use_color = 1;
402  } else
403  use_color = 0;
404  }
405  if (use_color)
406  SetConsoleTextAttribute(con, (org_attributes & 0xfff0) | (color & 0x0f));
407 #else
408  if (use_color < 0) {
409  const char *term = getenv("TERM");
410  use_color = term && strcmp(term, "dumb") && isatty(2);
411  }
412  if (use_color)
413  fprintf(stderr, "\x1b[%d;3%dm", (color & 0x08) >> 3, color & 0x07);
414 #endif
415 
416  va_start(arg, fmt);
417  vfprintf(stderr, fmt, arg);
418  va_end(arg);
419 
420  if (use_color) {
421 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
422  SetConsoleTextAttribute(con, org_attributes);
423 #else
424  fprintf(stderr, "\x1b[0m");
425 #endif
426  }
427 }
428 
429 /* Deallocate a tree */
431 {
432  if (f) {
434  while (v) {
435  CheckasmFuncVersion *next = v->next;
436  free(v);
437  v = next;
438  }
439 
440  destroy_func_tree(f->child[0]);
441  destroy_func_tree(f->child[1]);
442  free(f);
443  }
444 }
445 
446 /* Allocate a zero-initialized block, clean up and exit on failure */
447 static void *checkasm_malloc(size_t size)
448 {
449  void *ptr = calloc(1, size);
450  if (!ptr) {
451  fprintf(stderr, "checkasm: malloc failed\n");
452  destroy_func_tree(state.funcs);
453  exit(1);
454  }
455  return ptr;
456 }
457 
458 /* Get the suffix of the specified cpu flag */
459 static const char *cpu_suffix(int cpu)
460 {
461  int i = FF_ARRAY_ELEMS(cpus);
462 
463  while (--i >= 0)
464  if (cpu & cpus[i].flag)
465  return cpus[i].suffix;
466 
467  return "c";
468 }
469 
470 static int cmp_nop(const void *a, const void *b)
471 {
472  return *(const uint16_t*)a - *(const uint16_t*)b;
473 }
474 
475 /* Measure the overhead of the timing code (in decicycles) */
476 static int measure_nop_time(void)
477 {
478  uint16_t nops[10000];
479  int i, nop_sum = 0;
480  av_unused const int sysfd = state.sysfd;
481 
482  uint64_t t = 0;
483  for (i = 0; i < 10000; i++) {
484  PERF_START(t);
485  PERF_STOP(t);
486  nops[i] = t;
487  }
488 
489  qsort(nops, 10000, sizeof(uint16_t), cmp_nop);
490  for (i = 2500; i < 7500; i++)
491  nop_sum += nops[i];
492 
493  return nop_sum / 500;
494 }
495 
496 /* Print benchmark results */
498 {
499  if (f) {
500  print_benchs(f->child[0]);
501 
502  /* Only print functions with at least one assembly version */
503  if (f->versions.cpu || f->versions.next) {
504  CheckasmFuncVersion *v = &f->versions;
505  do {
506  CheckasmPerf *p = &v->perf;
507  if (p->iterations) {
508  int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
509  printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
510  }
511  } while ((v = v->next));
512  }
513 
514  print_benchs(f->child[1]);
515  }
516 }
517 
518 /* ASCIIbetical sort except preserving natural order for numbers */
519 static int cmp_func_names(const char *a, const char *b)
520 {
521  const char *start = a;
522  int ascii_diff, digit_diff;
523 
524  for (; !(ascii_diff = *(const unsigned char*)a - *(const unsigned char*)b) && *a; a++, b++);
525  for (; av_isdigit(*a) && av_isdigit(*b); a++, b++);
526 
527  if (a > start && av_isdigit(a[-1]) && (digit_diff = av_isdigit(*a) - av_isdigit(*b)))
528  return digit_diff;
529 
530  return ascii_diff;
531 }
532 
533 /* Perform a tree rotation in the specified direction and return the new root */
535 {
536  CheckasmFunc *r = f->child[dir^1];
537  f->child[dir^1] = r->child[dir];
538  r->child[dir] = f;
539  r->color = f->color;
540  f->color = 0;
541  return r;
542 }
543 
544 #define is_red(f) ((f) && !(f)->color)
545 
546 /* Balance a left-leaning red-black tree at the specified node */
547 static void balance_tree(CheckasmFunc **root)
548 {
549  CheckasmFunc *f = *root;
550 
551  if (is_red(f->child[0]) && is_red(f->child[1])) {
552  f->color ^= 1;
553  f->child[0]->color = f->child[1]->color = 1;
554  }
555 
556  if (!is_red(f->child[0]) && is_red(f->child[1]))
557  *root = rotate_tree(f, 0); /* Rotate left */
558  else if (is_red(f->child[0]) && is_red(f->child[0]->child[0]))
559  *root = rotate_tree(f, 1); /* Rotate right */
560 }
561 
562 /* Get a node with the specified name, creating it if it doesn't exist */
563 static CheckasmFunc *get_func(CheckasmFunc **root, const char *name)
564 {
565  CheckasmFunc *f = *root;
566 
567  if (f) {
568  /* Search the tree for a matching node */
569  int cmp = cmp_func_names(name, f->name);
570  if (cmp) {
571  f = get_func(&f->child[cmp > 0], name);
572 
573  /* Rebalance the tree on the way up if a new node was inserted */
574  if (!f->versions.func)
575  balance_tree(root);
576  }
577  } else {
578  /* Allocate and insert a new node into the tree */
579  int name_length = strlen(name);
580  f = *root = checkasm_malloc(sizeof(CheckasmFunc) + name_length);
581  memcpy(f->name, name, name_length + 1);
582  }
583 
584  return f;
585 }
586 
587 /* Perform tests and benchmarks for the specified cpu flag if supported by the host */
588 static void check_cpu_flag(const char *name, int flag)
589 {
590  int old_cpu_flag = state.cpu_flag;
591 
592  flag |= old_cpu_flag;
593  av_force_cpu_flags(-1);
594  state.cpu_flag = flag & av_get_cpu_flags();
595  av_force_cpu_flags(state.cpu_flag);
596 
597  if (!flag || state.cpu_flag != old_cpu_flag) {
598  int i;
599 
600  state.cpu_flag_name = name;
601  for (i = 0; tests[i].func; i++) {
602  if (state.test_name && strcmp(tests[i].name, state.test_name))
603  continue;
604  state.current_test_name = tests[i].name;
605  tests[i].func();
606  }
607  }
608 }
609 
610 /* Print the name of the current CPU flag, but only do it once */
611 static void print_cpu_name(void)
612 {
613  if (state.cpu_flag_name) {
614  color_printf(COLOR_YELLOW, "%s:\n", state.cpu_flag_name);
615  state.cpu_flag_name = NULL;
616  }
617 }
618 
619 #if CONFIG_LINUX_PERF
620 static int bench_init_linux(void)
621 {
622  struct perf_event_attr attr = {
623  .type = PERF_TYPE_HARDWARE,
624  .size = sizeof(struct perf_event_attr),
625  .config = PERF_COUNT_HW_CPU_CYCLES,
626  .disabled = 1, // start counting only on demand
627  .exclude_kernel = 1,
628  .exclude_hv = 1,
629  };
630 
631  printf("benchmarking with Linux Perf Monitoring API\n");
632 
633  state.sysfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0);
634  if (state.sysfd == -1) {
635  perror("syscall");
636  return -1;
637  }
638  return 0;
639 }
640 #endif
641 
642 #if !CONFIG_LINUX_PERF
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 #else
660  int ret = bench_init_ffmpeg();
661 #endif
662  if (ret < 0)
663  return ret;
664 
665  state.nop_time = measure_nop_time();
666  printf("nop: %d.%d\n", state.nop_time/10, state.nop_time%10);
667  return 0;
668 }
669 
670 static void bench_uninit(void)
671 {
672 #if CONFIG_LINUX_PERF
673  if (state.sysfd > 0)
674  close(state.sysfd);
675 #endif
676 }
677 
678 int main(int argc, char *argv[])
679 {
680  unsigned int seed = av_get_random_seed();
681  int i, ret = 0;
682 
683 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
685  checkasm_checked_call = checkasm_checked_call_vfp;
686 #endif
687 
688  if (!tests[0].func || !cpus[0].flag) {
689  fprintf(stderr, "checkasm: no tests to perform\n");
690  return 0;
691  }
692 
693  while (argc > 1) {
694  if (!strncmp(argv[1], "--bench", 7)) {
695  if (bench_init() < 0)
696  return 1;
697  if (argv[1][7] == '=') {
698  state.bench_pattern = argv[1] + 8;
699  state.bench_pattern_len = strlen(state.bench_pattern);
700  } else
701  state.bench_pattern = "";
702  } else if (!strncmp(argv[1], "--test=", 7)) {
703  state.test_name = argv[1] + 7;
704  } else if (!strcmp(argv[1], "--verbose") || !strcmp(argv[1], "-v")) {
705  state.verbose = 1;
706  } else {
707  seed = strtoul(argv[1], NULL, 10);
708  }
709 
710  argc--;
711  argv++;
712  }
713 
714  fprintf(stderr, "checkasm: using random seed %u\n", seed);
715  av_lfg_init(&checkasm_lfg, seed);
716 
717  check_cpu_flag(NULL, 0);
718  for (i = 0; cpus[i].flag; i++)
719  check_cpu_flag(cpus[i].name, cpus[i].flag);
720 
721  if (state.num_failed) {
722  fprintf(stderr, "checkasm: %d of %d tests have failed\n", state.num_failed, state.num_checked);
723  ret = 1;
724  } else {
725  fprintf(stderr, "checkasm: all %d tests passed\n", state.num_checked);
726  if (state.bench_pattern) {
727  print_benchs(state.funcs);
728  }
729  }
730 
731  destroy_func_tree(state.funcs);
732  bench_uninit();
733  return ret;
734 }
735 
736 /* Decide whether or not the specified function needs to be tested and
737  * allocate/initialize data structures if needed. Returns a pointer to a
738  * reference function if the function should be tested, otherwise NULL */
739 void *checkasm_check_func(void *func, const char *name, ...)
740 {
741  char name_buf[256];
742  void *ref = func;
744  int name_length;
745  va_list arg;
746 
747  va_start(arg, name);
748  name_length = vsnprintf(name_buf, sizeof(name_buf), name, arg);
749  va_end(arg);
750 
751  if (!func || name_length <= 0 || name_length >= sizeof(name_buf))
752  return NULL;
753 
754  state.current_func = get_func(&state.funcs, name_buf);
755  state.funcs->color = 1;
756  v = &state.current_func->versions;
757 
758  if (v->func) {
759  CheckasmFuncVersion *prev;
760  do {
761  /* Only test functions that haven't already been tested */
762  if (v->func == func)
763  return NULL;
764 
765  if (v->ok)
766  ref = v->func;
767 
768  prev = v;
769  } while ((v = v->next));
770 
771  v = prev->next = checkasm_malloc(sizeof(CheckasmFuncVersion));
772  }
773 
774  v->func = func;
775  v->ok = 1;
776  v->cpu = state.cpu_flag;
777  state.current_func_ver = v;
778 
779  if (state.cpu_flag)
780  state.num_checked++;
781 
782  return ref;
783 }
784 
785 /* Decide whether or not the current function needs to be benchmarked */
787 {
788  return !state.num_failed && state.bench_pattern &&
789  !strncmp(state.current_func->name, state.bench_pattern, state.bench_pattern_len);
790 }
791 
792 /* Indicate that the current test has failed */
793 void checkasm_fail_func(const char *msg, ...)
794 {
795  if (state.current_func_ver->cpu && state.current_func_ver->ok) {
796  va_list arg;
797 
798  print_cpu_name();
799  fprintf(stderr, " %s_%s (", state.current_func->name, cpu_suffix(state.current_func_ver->cpu));
800  va_start(arg, msg);
801  vfprintf(stderr, msg, arg);
802  va_end(arg);
803  fprintf(stderr, ")\n");
804 
805  state.current_func_ver->ok = 0;
806  state.num_failed++;
807  }
808 }
809 
810 /* Get the benchmark context of the current function */
812 {
813  CheckasmPerf *perf = &state.current_func_ver->perf;
814  memset(perf, 0, sizeof(*perf));
815  perf->sysfd = state.sysfd;
816  return perf;
817 }
818 
819 /* Print the outcome of all tests performed since the last time this function was called */
820 void checkasm_report(const char *name, ...)
821 {
822  static int prev_checked, prev_failed, max_length;
823 
824  if (state.num_checked > prev_checked) {
825  int pad_length = max_length + 4;
826  va_list arg;
827 
828  print_cpu_name();
829  pad_length -= fprintf(stderr, " - %s.", state.current_test_name);
830  va_start(arg, name);
831  pad_length -= vfprintf(stderr, name, arg);
832  va_end(arg);
833  fprintf(stderr, "%*c", FFMAX(pad_length, 0) + 2, '[');
834 
835  if (state.num_failed == prev_failed)
836  color_printf(COLOR_GREEN, "OK");
837  else
838  color_printf(COLOR_RED, "FAILED");
839  fprintf(stderr, "]\n");
840 
841  prev_checked = state.num_checked;
842  prev_failed = state.num_failed;
843  } else if (!state.cpu_flag) {
844  /* Calculate the amount of padding required to make the output vertically aligned */
845  int length = strlen(state.current_test_name);
846  va_list arg;
847 
848  va_start(arg, name);
849  length += vsnprintf(NULL, 0, name, arg);
850  va_end(arg);
851 
852  if (length > max_length)
853  max_length = length;
854  }
855 }
856 
857 #define DEF_CHECKASM_CHECK_FUNC(type, fmt) \
858 int checkasm_check_##type(const char *const file, const int line, \
859  const type *buf1, ptrdiff_t stride1, \
860  const type *buf2, ptrdiff_t stride2, \
861  const int w, int h, const char *const name) \
862 { \
863  int y = 0; \
864  stride1 /= sizeof(*buf1); \
865  stride2 /= sizeof(*buf2); \
866  for (y = 0; y < h; y++) \
867  if (memcmp(&buf1[y*stride1], &buf2[y*stride2], w*sizeof(*buf1))) \
868  break; \
869  if (y == h) \
870  return 0; \
871  checkasm_fail_func("%s:%d", file, line); \
872  if (!state.verbose) \
873  return 1; \
874  fprintf(stderr, "%s:\n", name); \
875  while (h--) { \
876  for (int x = 0; x < w; x++) \
877  fprintf(stderr, " " fmt, buf1[x]); \
878  fprintf(stderr, " "); \
879  for (int x = 0; x < w; x++) \
880  fprintf(stderr, " " fmt, buf2[x]); \
881  fprintf(stderr, " "); \
882  for (int x = 0; x < w; x++) \
883  fprintf(stderr, "%c", buf1[x] != buf2[x] ? 'x' : '.'); \
884  buf1 += stride1; \
885  buf2 += stride2; \
886  fprintf(stderr, "\n"); \
887  } \
888  return 1; \
889 }
890 
892 DEF_CHECKASM_CHECK_FUNC(uint16_t, "%04x")
893 DEF_CHECKASM_CHECK_FUNC(int16_t, "%6d")
void checkasm_check_hevc_qpel(void)
Definition: hevc_pel.c:68
Context structure for the Lagged Fibonacci PRNG.
Definition: lfg.h:33
const char * name
Definition: checkasm.c:72
static int bench_init_ffmpeg(void)
Definition: checkasm.c:643
static int cmp_nop(const void *a, const void *b)
Definition: checkasm.c:470
#define AV_CPU_FLAG_AVX
AVX functions: requires OS support even if YMM registers aren&#39;t used.
Definition: cpu.h:49
#define AV_CPU_FLAG_MSA
Definition: cpu.h:75
#define NULL
Definition: coverity.c:32
#define AV_CPU_FLAG_ALTIVEC
standard
Definition: cpu.h:60
void checkasm_check_v210enc(void)
Definition: v210enc.c:82
static int measure_nop_time(void)
Definition: checkasm.c:476
static void bench_uninit(void)
Definition: checkasm.c:670
static av_const int av_isdigit(int c)
Locale-independent conversion of ASCII isdigit.
Definition: avstring.h:211
CheckasmFunc * current_func
Definition: checkasm.c:270
int float_near_abs_eps_array(const float *a, const float *b, float eps, unsigned len)
Definition: checkasm.c:338
static int is_negative(union av_intfloat32 u)
Definition: checkasm.c:292
uint64_t cycles
Definition: checkasm.h:223
CheckasmPerf * checkasm_get_perf_context(void)
Definition: checkasm.c:811
void checkasm_check_hevc_qpel_uni_w(void)
Definition: hevc_pel.c:153
#define AV_CPU_FLAG_SSE
SSE functions.
Definition: cpu.h:35
void checkasm_check_vp9dsp(void)
Definition: vp9dsp.c:626
void checkasm_check_hevc_qpel_bi_w(void)
Definition: hevc_pel.c:245
void checkasm_check_vf_threshold(void)
Definition: vf_threshold.c:79
#define vsnprintf
Definition: snprintf.h:36
void checkasm_check_hevc_epel_bi(void)
Definition: hevc_pel.c:430
void checkasm_check_flacdsp(void)
Definition: flacdsp.c:57
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:233
#define AV_CPU_FLAG_VFP
Definition: cpu.h:67
#define FF_ARRAY_ELEMS(a)
static const char * cpu_suffix(int cpu)
Definition: checkasm.c:459
void checkasm_check_afir(void)
Definition: af_afir.c:80
CheckasmFuncVersion * current_func_ver
Definition: checkasm.c:271
void checkasm_check_hevc_qpel_uni(void)
Definition: hevc_pel.c:112
const char * test_name
Definition: checkasm.c:284
void checkasm_check_alacdsp(void)
Definition: alacdsp.c:116
static int cmp_func_names(const char *a, const char *b)
Definition: checkasm.c:519
int float_near_abs_eps(float a, float b, float eps)
Definition: checkasm.c:327
void * checkasm_check_func(void *func, const char *name,...)
Definition: checkasm.c:739
void checkasm_check_aacpsdsp(void)
Definition: aacpsdsp.c:234
CheckasmPerf perf
Definition: checkasm.c:256
void checkasm_check_colorspace(void)
void checkasm_check_vp8dsp(void)
Definition: vp8dsp.c:508
struct CheckasmFunc * child[2]
Definition: checkasm.c:261
void checkasm_check_hevc_epel(void)
Definition: hevc_pel.c:297
uint8_t
const char * cpu_flag_name
Definition: checkasm.c:283
int checkasm_bench_func(void)
Definition: checkasm.c:786
#define AV_CPU_FLAG_FMA3
Haswell FMA3 functions.
Definition: cpu.h:55
char name[1]
Definition: checkasm.c:264
#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:678
#define u(width, name, range_min, range_max)
Definition: cbs_h2645.c:264
static const struct @319 tests[]
#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:254
#define AV_CPU_FLAG_AVX2
AVX2 functions: requires OS support even if YMM registers aren&#39;t used.
Definition: cpu.h:54
void checkasm_check_hevc_epel_uni(void)
Definition: hevc_pel.c:341
#define AV_CPU_FLAG_SSE2SLOW
SSE2 supported, but usually not faster.
Definition: cpu.h:37
void checkasm_check_h264qpel(void)
Definition: h264qpel.c:51
ptrdiff_t size
Definition: opengl_enc.c:100
CheckasmFunc * funcs
Definition: checkasm.c:269
static struct @321 state
static __device__ float fabsf(float a)
Definition: cuda_runtime.h:181
void checkasm_check_jpeg2000dsp(void)
Definition: jpeg2000dsp.c:92
#define AV_CPU_FLAG_XOP
Bulldozer XOP functions.
Definition: cpu.h:51
void checkasm_check_llviddspenc(void)
Definition: llviddspenc.c:105
int flag
Definition: checkasm.c:209
#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:563
CheckasmFuncVersion versions
Definition: checkasm.c:262
const char * suffix
Definition: checkasm.c:208
#define AV_CPU_FLAG_SSSE3
Conroe SSSE3 functions.
Definition: cpu.h:43
int float_near_ulp(float a, float b, unsigned max_ulp)
Definition: checkasm.c:297
static __device__ float fabs(float a)
Definition: cuda_runtime.h:182
void checkasm_check_h264dsp(void)
Definition: h264dsp.c:442
int num_checked
Definition: checkasm.c:275
#define COLOR_GREEN
Definition: checkasm.c:52
const char * r
Definition: vf_curves.c:116
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:86
static int bench_init(void)
Definition: checkasm.c:655
void checkasm_check_hevc_qpel_bi(void)
Definition: hevc_pel.c:201
AVLFG checkasm_lfg
Definition: checkasm.c:289
#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:103
void checkasm_check_hevc_epel_bi_w(void)
Definition: hevc_pel.c:474
void checkasm_check_videodsp(void)
Definition: videodsp.c:81
#define AV_CPU_FLAG_ARMV5TE
Definition: cpu.h:64
void checkasm_check_hevc_epel_uni_w(void)
Definition: hevc_pel.c:382
void checkasm_check_fixed_dsp(void)
Definition: fixed_dsp.c:133
#define b
Definition: input.c:41
static void print_benchs(CheckasmFunc *f)
Definition: checkasm.c:497
#define have_neon(flags)
Definition: cpu.h:26
void checkasm_check_utvideodsp(void)
Definition: utvideodsp.c:91
void checkasm_check_audiodsp(void)
Definition: audiodsp.c:52
#define AV_CPU_FLAG_SSE3
Prescott SSE3 functions.
Definition: cpu.h:40
void checkasm_check_nlmeans(void)
Definition: vf_nlmeans.c:31
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
void checkasm_check_sw_rgb(void)
Definition: sw_rgb.c:183
#define is_red(f)
Definition: checkasm.c:544
int32_t
void checkasm_check_exrdsp(void)
Definition: exrdsp.c:77
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:447
const char * bench_pattern
Definition: checkasm.c:273
int iterations
Definition: checkasm.h:224
int bench_pattern_len
Definition: checkasm.c:274
void checkasm_report(const char *name,...)
Definition: checkasm.c:820
#define DEF_CHECKASM_CHECK_FUNC(type, fmt)
Definition: checkasm.c:857
void checkasm_check_hevc_idct(void)
Definition: hevc_idct.c:87
int cpu_flag
Definition: checkasm.c:282
int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp, unsigned len)
Definition: checkasm.c:315
#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
Definition: cpu.h:34
int nop_time
Definition: checkasm.c:279
int double_near_abs_eps(double a, double b, double eps)
Definition: checkasm.c:367
void checkasm_check_vf_eq(void)
Definition: vf_eq.c:76
#define AV_CPU_FLAG_ARMV6
Definition: cpu.h:65
int num_failed
Definition: checkasm.c:276
#define AV_CPU_FLAG_MMI
Definition: cpu.h:74
#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:46
#define PERF_START(t)
Definition: checkasm.h:272
static CheckasmFunc * rotate_tree(CheckasmFunc *f, int dir)
Definition: checkasm.c:534
static const struct @320 cpus[]
int verbose
Definition: checkasm.c:285
#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:280
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:95
int double_near_abs_eps_array(const double *a, const double *b, double eps, unsigned len)
Definition: checkasm.c:374
static void color_printf(int color, const char *fmt,...)
Definition: checkasm.c:387
#define AV_CPU_FLAG_3DNOWEXT
AMD 3DNowExt.
Definition: cpu.h:39
void checkasm_check_float_dsp(void)
Definition: float_dsp.c:282
#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:65
void checkasm_check_opusdsp(void)
Definition: opusdsp.c:85
int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
Definition: checkasm.c:350
static void destroy_func_tree(CheckasmFunc *f)
Definition: checkasm.c:430
common internal and external API header
static int ref[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:107
struct CheckasmFuncVersion * next
Definition: checkasm.c:252
#define AV_CPU_FLAG_ARMV8
Definition: cpu.h:70
const char * current_test_name
Definition: checkasm.c:272
static void check_cpu_flag(const char *name, int flag)
Definition: checkasm.c:588
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:82
void checkasm_check_hevc_sao(void)
Definition: hevc_sao.c:132
#define PERF_STOP(t)
Definition: checkasm.h:273
void checkasm_check_synth_filter(void)
Definition: synth_filter.c:46
int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps, unsigned max_ulp, unsigned len)
Definition: checkasm.c:355
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition: cpu.h:36
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:793
void checkasm_check_bswapdsp(void)
Definition: bswapdsp.c:60
void av_force_cpu_flags(int arg)
Disables cpu detection and forces the specified flags.
Definition: cpu.c:67
void checkasm_check_g722dsp(void)
Definition: g722dsp.c:53
void checkasm_check_sw_scale(void)
Definition: sw_scale.c:230
static void balance_tree(CheckasmFunc **root)
Definition: checkasm.c:547
void checkasm_check_vf_hflip(void)
Definition: vf_hflip.c:71
void checkasm_check_blend(void)
Definition: vf_blend.c:88
#define av_unused
Definition: attributes.h:131
const char * name
Definition: opengl_enc.c:102
static void print_cpu_name(void)
Definition: checkasm.c:611
void checkasm_check_blockdsp(void)
Definition: blockdsp.c:55
uint8_t color
Definition: checkasm.c:263