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 #include "config_components.h"
25
26 #if CONFIG_LINUX_PERF
27 # ifndef _GNU_SOURCE
28 # define _GNU_SOURCE // for syscall (performance monitoring API)
29 # endif
30 #endif
31
32 #include <stdarg.h>
33 #include <stdio.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include "checkasm.h"
37 #include "libavutil/common.h"
38 #include "libavutil/cpu.h"
39 #include "libavutil/intfloat.h"
40 #include "libavutil/random_seed.h"
41
42 #if HAVE_IO_H
43 #include <io.h>
44 #endif
45
46 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
47 #include <windows.h>
48 #define COLOR_RED FOREGROUND_RED
49 #define COLOR_GREEN FOREGROUND_GREEN
50 #define COLOR_YELLOW (FOREGROUND_RED|FOREGROUND_GREEN)
51 #else
52 #define COLOR_RED 1
53 #define COLOR_GREEN 2
54 #define COLOR_YELLOW 3
55 #endif
56
57 #if HAVE_UNISTD_H
58 #include <unistd.h>
59 #endif
60
61 #if !HAVE_ISATTY
62 #define isatty(fd) 1
63 #endif
64
65 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
66 #include "libavutil/arm/cpu.h"
67
68 void (*checkasm_checked_call)(void *func, int dummy, ...) = checkasm_checked_call_novfp;
69 #endif
70
71 /* List of tests to invoke */
72 static const struct {
73 const char *name;
74 void (*func)(void);
75 } tests[] = {
76 #if CONFIG_AVCODEC
77 #if CONFIG_AAC_DECODER
78 { "aacpsdsp", checkasm_check_aacpsdsp },
79 { "sbrdsp", checkasm_check_sbrdsp },
80 #endif
81 #if CONFIG_ALAC_DECODER
82 { "alacdsp", checkasm_check_alacdsp },
83 #endif
84 #if CONFIG_AUDIODSP
85 { "audiodsp", checkasm_check_audiodsp },
86 #endif
87 #if CONFIG_BLOCKDSP
88 { "blockdsp", checkasm_check_blockdsp },
89 #endif
90 #if CONFIG_BSWAPDSP
91 { "bswapdsp", checkasm_check_bswapdsp },
92 #endif
93 #if CONFIG_DCA_DECODER
94 { "synth_filter", checkasm_check_synth_filter },
95 #endif
96 #if CONFIG_EXR_DECODER
97 { "exrdsp", checkasm_check_exrdsp },
98 #endif
99 #if CONFIG_FLACDSP
100 { "flacdsp", checkasm_check_flacdsp },
101 #endif
102 #if CONFIG_FMTCONVERT
103 { "fmtconvert", checkasm_check_fmtconvert },
104 #endif
105 #if CONFIG_G722DSP
106 { "g722dsp", checkasm_check_g722dsp },
107 #endif
108 #if CONFIG_H264DSP
109 { "h264dsp", checkasm_check_h264dsp },
110 #endif
111 #if CONFIG_H264PRED
112 { "h264pred", checkasm_check_h264pred },
113 #endif
114 #if CONFIG_H264QPEL
115 { "h264qpel", checkasm_check_h264qpel },
116 #endif
117 #if CONFIG_HEVC_DECODER
118 { "hevc_add_res", checkasm_check_hevc_add_res },
119 { "hevc_idct", checkasm_check_hevc_idct },
120 { "hevc_pel", checkasm_check_hevc_pel },
121 { "hevc_sao", checkasm_check_hevc_sao },
122 #endif
123 #if CONFIG_HUFFYUV_DECODER
124 { "huffyuvdsp", checkasm_check_huffyuvdsp },
125 #endif
126 #if CONFIG_IDCTDSP
127 { "idctdsp", checkasm_check_idctdsp },
128 #endif
129 #if CONFIG_JPEG2000_DECODER
130 { "jpeg2000dsp", checkasm_check_jpeg2000dsp },
131 #endif
132 #if CONFIG_HUFFYUVDSP
133 { "llviddsp", checkasm_check_llviddsp },
134 #endif
135 #if CONFIG_LLVIDENCDSP
136 { "llviddspenc", checkasm_check_llviddspenc },
137 #endif
138 #if CONFIG_ME_CMP
139 { "motion", checkasm_check_motion },
140 #endif
141 #if CONFIG_OPUS_DECODER
142 { "opusdsp", checkasm_check_opusdsp },
143 #endif
144 #if CONFIG_PIXBLOCKDSP
145 { "pixblockdsp", checkasm_check_pixblockdsp },
146 #endif
147 #if CONFIG_UTVIDEO_DECODER
148 { "utvideodsp", checkasm_check_utvideodsp },
149 #endif
150 #if CONFIG_V210_DECODER
151 { "v210dec", checkasm_check_v210dec },
152 #endif
153 #if CONFIG_V210_ENCODER
154 { "v210enc", checkasm_check_v210enc },
155 #endif
156 #if CONFIG_VC1DSP
157 { "vc1dsp", checkasm_check_vc1dsp },
158 #endif
159 #if CONFIG_VP8DSP
160 { "vp8dsp", checkasm_check_vp8dsp },
161 #endif
162 #if CONFIG_VP9_DECODER
163 { "vp9dsp", checkasm_check_vp9dsp },
164 #endif
165 #if CONFIG_VIDEODSP
166 { "videodsp", checkasm_check_videodsp },
167 #endif
168 #endif
169 #if CONFIG_AVFILTER
170 #if CONFIG_AFIR_FILTER
171 { "af_afir", checkasm_check_afir },
172 #endif
173 #if CONFIG_BLEND_FILTER
174 { "vf_blend", checkasm_check_blend },
175 #endif
176 #if CONFIG_COLORSPACE_FILTER
177 { "vf_colorspace", checkasm_check_colorspace },
178 #endif
179 #if CONFIG_EQ_FILTER
180 { "vf_eq", checkasm_check_vf_eq },
181 #endif
182 #if CONFIG_GBLUR_FILTER
183 { "vf_gblur", checkasm_check_vf_gblur },
184 #endif
185 #if CONFIG_HFLIP_FILTER
186 { "vf_hflip", checkasm_check_vf_hflip },
187 #endif
188 #if CONFIG_NLMEANS_FILTER
189 { "vf_nlmeans", checkasm_check_nlmeans },
190 #endif
191 #if CONFIG_THRESHOLD_FILTER
192 { "vf_threshold", checkasm_check_vf_threshold },
193 #endif
194 #endif
195 #if CONFIG_SWSCALE
196 { "sw_gbrp", checkasm_check_sw_gbrp },
197 { "sw_rgb", checkasm_check_sw_rgb },
198 { "sw_scale", checkasm_check_sw_scale },
199 #endif
200 #if CONFIG_AVUTIL
201 { "fixed_dsp", checkasm_check_fixed_dsp },
202 { "float_dsp", checkasm_check_float_dsp },
203 { "av_tx", checkasm_check_av_tx },
204 #endif
205 { NULL }
206 };
207
208 /* List of cpu flags to check */
209 static const struct {
210 const char *name;
211 const char *suffix;
212 int flag;
213 } cpus[] = {
214 #if ARCH_AARCH64
215 { "ARMV8", "armv8", AV_CPU_FLAG_ARMV8 },
216 { "NEON", "neon", AV_CPU_FLAG_NEON },
217 #elif ARCH_ARM
218 { "ARMV5TE", "armv5te", AV_CPU_FLAG_ARMV5TE },
219 { "ARMV6", "armv6", AV_CPU_FLAG_ARMV6 },
220 { "ARMV6T2", "armv6t2", AV_CPU_FLAG_ARMV6T2 },
221 { "VFP", "vfp", AV_CPU_FLAG_VFP },
222 { "VFP_VM", "vfp_vm", AV_CPU_FLAG_VFP_VM },
223 { "VFPV3", "vfp3", AV_CPU_FLAG_VFPV3 },
224 { "NEON", "neon", AV_CPU_FLAG_NEON },
225 #elif ARCH_PPC
226 { "ALTIVEC", "altivec", AV_CPU_FLAG_ALTIVEC },
227 { "VSX", "vsx", AV_CPU_FLAG_VSX },
228 { "POWER8", "power8", AV_CPU_FLAG_POWER8 },
229 #elif ARCH_MIPS
230 { "MMI", "mmi", AV_CPU_FLAG_MMI },
231 { "MSA", "msa", AV_CPU_FLAG_MSA },
232 #elif ARCH_X86
233 { "MMX", "mmx", AV_CPU_FLAG_MMX|AV_CPU_FLAG_CMOV },
234 { "MMXEXT", "mmxext", AV_CPU_FLAG_MMXEXT },
235 { "3DNOW", "3dnow", AV_CPU_FLAG_3DNOW },
236 { "3DNOWEXT", "3dnowext", AV_CPU_FLAG_3DNOWEXT },
237 { "SSE", "sse", AV_CPU_FLAG_SSE },
238 { "SSE2", "sse2", AV_CPU_FLAG_SSE2|AV_CPU_FLAG_SSE2SLOW },
239 { "SSE3", "sse3", AV_CPU_FLAG_SSE3|AV_CPU_FLAG_SSE3SLOW },
240 { "SSSE3", "ssse3", AV_CPU_FLAG_SSSE3|AV_CPU_FLAG_ATOM },
241 { "SSE4.1", "sse4", AV_CPU_FLAG_SSE4 },
242 { "SSE4.2", "sse42", AV_CPU_FLAG_SSE42 },
243 { "AES-NI", "aesni", AV_CPU_FLAG_AESNI },
244 { "AVX", "avx", AV_CPU_FLAG_AVX },
245 { "XOP", "xop", AV_CPU_FLAG_XOP },
246 { "FMA3", "fma3", AV_CPU_FLAG_FMA3 },
247 { "FMA4", "fma4", AV_CPU_FLAG_FMA4 },
248 { "AVX2", "avx2", AV_CPU_FLAG_AVX2 },
249 { "AVX-512", "avx512", AV_CPU_FLAG_AVX512 },
250 { "AVX-512ICL", "avx512icl", AV_CPU_FLAG_AVX512ICL },
251 #elif ARCH_LOONGARCH
252 { "LSX", "lsx", AV_CPU_FLAG_LSX },
253 { "LASX", "lasx", AV_CPU_FLAG_LASX },
254 #endif
255 { NULL }
256 };
257
258 typedef struct CheckasmFuncVersion {
259 struct CheckasmFuncVersion *next;
260 void *func;
261 int ok;
262 int cpu;
263 CheckasmPerf perf;
264 } CheckasmFuncVersion;
265
266 /* Binary search tree node */
267 typedef struct CheckasmFunc {
268 struct CheckasmFunc *child[2];
269 CheckasmFuncVersion versions;
270 uint8_t color; /* 0 = red, 1 = black */
271 char name[1];
272 } CheckasmFunc;
273
274 /* Internal state */
275 static struct {
276 CheckasmFunc *funcs;
277 CheckasmFunc *current_func;
278 CheckasmFuncVersion *current_func_ver;
279 const char *current_test_name;
280 const char *bench_pattern;
281 int bench_pattern_len;
282 int num_checked;
283 int num_failed;
284
285 /* perf */
286 int nop_time;
287 int sysfd;
288
289 int cpu_flag;
290 const char *cpu_flag_name;
291 const char *test_name;
292 int verbose;
293 } state;
294
295 /* PRNG state */
296 AVLFG checkasm_lfg;
297
298 /* float compare support code */
is_negative(union av_intfloat32 u)299 static int is_negative(union av_intfloat32 u)
300 {
301 return u.i >> 31;
302 }
303
float_near_ulp(float a,float b,unsigned max_ulp)304 int float_near_ulp(float a, float b, unsigned max_ulp)
305 {
306 union av_intfloat32 x, y;
307
308 x.f = a;
309 y.f = b;
310
311 if (is_negative(x) != is_negative(y)) {
312 // handle -0.0 == +0.0
313 return a == b;
314 }
315
316 if (llabs((int64_t)x.i - y.i) <= max_ulp)
317 return 1;
318
319 return 0;
320 }
321
float_near_ulp_array(const float * a,const float * b,unsigned max_ulp,unsigned len)322 int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp,
323 unsigned len)
324 {
325 unsigned i;
326
327 for (i = 0; i < len; i++) {
328 if (!float_near_ulp(a[i], b[i], max_ulp))
329 return 0;
330 }
331 return 1;
332 }
333
float_near_abs_eps(float a,float b,float eps)334 int float_near_abs_eps(float a, float b, float eps)
335 {
336 float abs_diff = fabsf(a - b);
337 if (abs_diff < eps)
338 return 1;
339
340 fprintf(stderr, "test failed comparing %g with %g (abs diff=%g with EPS=%g)\n", a, b, abs_diff, eps);
341
342 return 0;
343 }
344
float_near_abs_eps_array(const float * a,const float * b,float eps,unsigned len)345 int float_near_abs_eps_array(const float *a, const float *b, float eps,
346 unsigned len)
347 {
348 unsigned i;
349
350 for (i = 0; i < len; i++) {
351 if (!float_near_abs_eps(a[i], b[i], eps))
352 return 0;
353 }
354 return 1;
355 }
356
float_near_abs_eps_ulp(float a,float b,float eps,unsigned max_ulp)357 int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp)
358 {
359 return float_near_ulp(a, b, max_ulp) || float_near_abs_eps(a, b, eps);
360 }
361
float_near_abs_eps_array_ulp(const float * a,const float * b,float eps,unsigned max_ulp,unsigned len)362 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
363 unsigned max_ulp, unsigned len)
364 {
365 unsigned i;
366
367 for (i = 0; i < len; i++) {
368 if (!float_near_abs_eps_ulp(a[i], b[i], eps, max_ulp))
369 return 0;
370 }
371 return 1;
372 }
373
double_near_abs_eps(double a,double b,double eps)374 int double_near_abs_eps(double a, double b, double eps)
375 {
376 double abs_diff = fabs(a - b);
377
378 return abs_diff < eps;
379 }
380
double_near_abs_eps_array(const double * a,const double * b,double eps,unsigned len)381 int double_near_abs_eps_array(const double *a, const double *b, double eps,
382 unsigned len)
383 {
384 unsigned i;
385
386 for (i = 0; i < len; i++) {
387 if (!double_near_abs_eps(a[i], b[i], eps))
388 return 0;
389 }
390 return 1;
391 }
392
393 /* Print colored text to stderr if the terminal supports it */
color_printf(int color,const char * fmt,...)394 static void color_printf(int color, const char *fmt, ...)
395 {
396 static int use_color = -1;
397 va_list arg;
398
399 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
400 static HANDLE con;
401 static WORD org_attributes;
402
403 if (use_color < 0) {
404 CONSOLE_SCREEN_BUFFER_INFO con_info;
405 con = GetStdHandle(STD_ERROR_HANDLE);
406 if (con && con != INVALID_HANDLE_VALUE && GetConsoleScreenBufferInfo(con, &con_info)) {
407 org_attributes = con_info.wAttributes;
408 use_color = 1;
409 } else
410 use_color = 0;
411 }
412 if (use_color)
413 SetConsoleTextAttribute(con, (org_attributes & 0xfff0) | (color & 0x0f));
414 #else
415 if (use_color < 0) {
416 const char *term = getenv("TERM");
417 use_color = term && strcmp(term, "dumb") && isatty(2);
418 }
419 if (use_color)
420 fprintf(stderr, "\x1b[%d;3%dm", (color & 0x08) >> 3, color & 0x07);
421 #endif
422
423 va_start(arg, fmt);
424 vfprintf(stderr, fmt, arg);
425 va_end(arg);
426
427 if (use_color) {
428 #if HAVE_SETCONSOLETEXTATTRIBUTE && HAVE_GETSTDHANDLE
429 SetConsoleTextAttribute(con, org_attributes);
430 #else
431 fprintf(stderr, "\x1b[0m");
432 #endif
433 }
434 }
435
436 /* Deallocate a tree */
destroy_func_tree(CheckasmFunc * f)437 static void destroy_func_tree(CheckasmFunc *f)
438 {
439 if (f) {
440 CheckasmFuncVersion *v = f->versions.next;
441 while (v) {
442 CheckasmFuncVersion *next = v->next;
443 free(v);
444 v = next;
445 }
446
447 destroy_func_tree(f->child[0]);
448 destroy_func_tree(f->child[1]);
449 free(f);
450 }
451 }
452
453 /* Allocate a zero-initialized block, clean up and exit on failure */
checkasm_malloc(size_t size)454 static void *checkasm_malloc(size_t size)
455 {
456 void *ptr = calloc(1, size);
457 if (!ptr) {
458 fprintf(stderr, "checkasm: malloc failed\n");
459 destroy_func_tree(state.funcs);
460 exit(1);
461 }
462 return ptr;
463 }
464
465 /* Get the suffix of the specified cpu flag */
cpu_suffix(int cpu)466 static const char *cpu_suffix(int cpu)
467 {
468 int i = FF_ARRAY_ELEMS(cpus);
469
470 while (--i >= 0)
471 if (cpu & cpus[i].flag)
472 return cpus[i].suffix;
473
474 return "c";
475 }
476
cmp_nop(const void * a,const void * b)477 static int cmp_nop(const void *a, const void *b)
478 {
479 return *(const uint16_t*)a - *(const uint16_t*)b;
480 }
481
482 /* Measure the overhead of the timing code (in decicycles) */
measure_nop_time(void)483 static int measure_nop_time(void)
484 {
485 uint16_t nops[10000];
486 int i, nop_sum = 0;
487 av_unused const int sysfd = state.sysfd;
488
489 uint64_t t = 0;
490 for (i = 0; i < 10000; i++) {
491 PERF_START(t);
492 PERF_STOP(t);
493 nops[i] = t;
494 }
495
496 qsort(nops, 10000, sizeof(uint16_t), cmp_nop);
497 for (i = 2500; i < 7500; i++)
498 nop_sum += nops[i];
499
500 return nop_sum / 500;
501 }
502
503 /* Print benchmark results */
print_benchs(CheckasmFunc * f)504 static void print_benchs(CheckasmFunc *f)
505 {
506 if (f) {
507 print_benchs(f->child[0]);
508
509 /* Only print functions with at least one assembly version */
510 if (f->versions.cpu || f->versions.next) {
511 CheckasmFuncVersion *v = &f->versions;
512 do {
513 CheckasmPerf *p = &v->perf;
514 if (p->iterations) {
515 int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
516 printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
517 }
518 } while ((v = v->next));
519 }
520
521 print_benchs(f->child[1]);
522 }
523 }
524
525 /* ASCIIbetical sort except preserving natural order for numbers */
cmp_func_names(const char * a,const char * b)526 static int cmp_func_names(const char *a, const char *b)
527 {
528 const char *start = a;
529 int ascii_diff, digit_diff;
530
531 for (; !(ascii_diff = *(const unsigned char*)a - *(const unsigned char*)b) && *a; a++, b++);
532 for (; av_isdigit(*a) && av_isdigit(*b); a++, b++);
533
534 if (a > start && av_isdigit(a[-1]) && (digit_diff = av_isdigit(*a) - av_isdigit(*b)))
535 return digit_diff;
536
537 return ascii_diff;
538 }
539
540 /* Perform a tree rotation in the specified direction and return the new root */
rotate_tree(CheckasmFunc * f,int dir)541 static CheckasmFunc *rotate_tree(CheckasmFunc *f, int dir)
542 {
543 CheckasmFunc *r = f->child[dir^1];
544 f->child[dir^1] = r->child[dir];
545 r->child[dir] = f;
546 r->color = f->color;
547 f->color = 0;
548 return r;
549 }
550
551 #define is_red(f) ((f) && !(f)->color)
552
553 /* Balance a left-leaning red-black tree at the specified node */
balance_tree(CheckasmFunc ** root)554 static void balance_tree(CheckasmFunc **root)
555 {
556 CheckasmFunc *f = *root;
557
558 if (is_red(f->child[0]) && is_red(f->child[1])) {
559 f->color ^= 1;
560 f->child[0]->color = f->child[1]->color = 1;
561 }
562
563 if (!is_red(f->child[0]) && is_red(f->child[1]))
564 *root = rotate_tree(f, 0); /* Rotate left */
565 else if (is_red(f->child[0]) && is_red(f->child[0]->child[0]))
566 *root = rotate_tree(f, 1); /* Rotate right */
567 }
568
569 /* Get a node with the specified name, creating it if it doesn't exist */
get_func(CheckasmFunc ** root,const char * name)570 static CheckasmFunc *get_func(CheckasmFunc **root, const char *name)
571 {
572 CheckasmFunc *f = *root;
573
574 if (f) {
575 /* Search the tree for a matching node */
576 int cmp = cmp_func_names(name, f->name);
577 if (cmp) {
578 f = get_func(&f->child[cmp > 0], name);
579
580 /* Rebalance the tree on the way up if a new node was inserted */
581 if (!f->versions.func)
582 balance_tree(root);
583 }
584 } else {
585 /* Allocate and insert a new node into the tree */
586 int name_length = strlen(name);
587 f = *root = checkasm_malloc(sizeof(CheckasmFunc) + name_length);
588 memcpy(f->name, name, name_length + 1);
589 }
590
591 return f;
592 }
593
594 /* Perform tests and benchmarks for the specified cpu flag if supported by the host */
check_cpu_flag(const char * name,int flag)595 static void check_cpu_flag(const char *name, int flag)
596 {
597 int old_cpu_flag = state.cpu_flag;
598
599 flag |= old_cpu_flag;
600 av_force_cpu_flags(-1);
601 state.cpu_flag = flag & av_get_cpu_flags();
602 av_force_cpu_flags(state.cpu_flag);
603
604 if (!flag || state.cpu_flag != old_cpu_flag) {
605 int i;
606
607 state.cpu_flag_name = name;
608 for (i = 0; tests[i].func; i++) {
609 if (state.test_name && strcmp(tests[i].name, state.test_name))
610 continue;
611 state.current_test_name = tests[i].name;
612 tests[i].func();
613 }
614 }
615 }
616
617 /* Print the name of the current CPU flag, but only do it once */
print_cpu_name(void)618 static void print_cpu_name(void)
619 {
620 if (state.cpu_flag_name) {
621 color_printf(COLOR_YELLOW, "%s:\n", state.cpu_flag_name);
622 state.cpu_flag_name = NULL;
623 }
624 }
625
626 #if CONFIG_LINUX_PERF
bench_init_linux(void)627 static int bench_init_linux(void)
628 {
629 struct perf_event_attr attr = {
630 .type = PERF_TYPE_HARDWARE,
631 .size = sizeof(struct perf_event_attr),
632 .config = PERF_COUNT_HW_CPU_CYCLES,
633 .disabled = 1, // start counting only on demand
634 .exclude_kernel = 1,
635 .exclude_hv = 1,
636 };
637
638 printf("benchmarking with Linux Perf Monitoring API\n");
639
640 state.sysfd = syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0);
641 if (state.sysfd == -1) {
642 perror("syscall");
643 return -1;
644 }
645 return 0;
646 }
647 #elif CONFIG_MACOS_KPERF
bench_init_kperf(void)648 static int bench_init_kperf(void)
649 {
650 ff_kperf_init();
651 return 0;
652 }
653 #else
bench_init_ffmpeg(void)654 static int bench_init_ffmpeg(void)
655 {
656 #ifdef AV_READ_TIME
657 printf("benchmarking with native FFmpeg timers\n");
658 return 0;
659 #else
660 fprintf(stderr, "checkasm: --bench is not supported on your system\n");
661 return -1;
662 #endif
663 }
664 #endif
665
bench_init(void)666 static int bench_init(void)
667 {
668 #if CONFIG_LINUX_PERF
669 int ret = bench_init_linux();
670 #elif CONFIG_MACOS_KPERF
671 int ret = bench_init_kperf();
672 #else
673 int ret = bench_init_ffmpeg();
674 #endif
675 if (ret < 0)
676 return ret;
677
678 state.nop_time = measure_nop_time();
679 printf("nop: %d.%d\n", state.nop_time/10, state.nop_time%10);
680 return 0;
681 }
682
bench_uninit(void)683 static void bench_uninit(void)
684 {
685 #if CONFIG_LINUX_PERF
686 if (state.sysfd > 0)
687 close(state.sysfd);
688 #endif
689 }
690
main(int argc,char * argv[])691 int main(int argc, char *argv[])
692 {
693 unsigned int seed = av_get_random_seed();
694 int i, ret = 0;
695
696 #if ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
697 if (have_vfp(av_get_cpu_flags()) || have_neon(av_get_cpu_flags()))
698 checkasm_checked_call = checkasm_checked_call_vfp;
699 #endif
700
701 if (!tests[0].func || !cpus[0].flag) {
702 fprintf(stderr, "checkasm: no tests to perform\n");
703 return 0;
704 }
705
706 while (argc > 1) {
707 if (!strncmp(argv[1], "--bench", 7)) {
708 if (bench_init() < 0)
709 return 1;
710 if (argv[1][7] == '=') {
711 state.bench_pattern = argv[1] + 8;
712 state.bench_pattern_len = strlen(state.bench_pattern);
713 } else
714 state.bench_pattern = "";
715 } else if (!strncmp(argv[1], "--test=", 7)) {
716 state.test_name = argv[1] + 7;
717 } else if (!strcmp(argv[1], "--verbose") || !strcmp(argv[1], "-v")) {
718 state.verbose = 1;
719 } else {
720 seed = strtoul(argv[1], NULL, 10);
721 }
722
723 argc--;
724 argv++;
725 }
726
727 fprintf(stderr, "checkasm: using random seed %u\n", seed);
728 av_lfg_init(&checkasm_lfg, seed);
729
730 check_cpu_flag(NULL, 0);
731 for (i = 0; cpus[i].flag; i++)
732 check_cpu_flag(cpus[i].name, cpus[i].flag);
733
734 if (state.num_failed) {
735 fprintf(stderr, "checkasm: %d of %d tests have failed\n", state.num_failed, state.num_checked);
736 ret = 1;
737 } else {
738 fprintf(stderr, "checkasm: all %d tests passed\n", state.num_checked);
739 if (state.bench_pattern) {
740 print_benchs(state.funcs);
741 }
742 }
743
744 destroy_func_tree(state.funcs);
745 bench_uninit();
746 return ret;
747 }
748
749 /* Decide whether or not the specified function needs to be tested and
750 * allocate/initialize data structures if needed. Returns a pointer to a
751 * reference function if the function should be tested, otherwise NULL */
checkasm_check_func(void * func,const char * name,...)752 void *checkasm_check_func(void *func, const char *name, ...)
753 {
754 char name_buf[256];
755 void *ref = func;
756 CheckasmFuncVersion *v;
757 int name_length;
758 va_list arg;
759
760 va_start(arg, name);
761 name_length = vsnprintf(name_buf, sizeof(name_buf), name, arg);
762 va_end(arg);
763
764 if (!func || name_length <= 0 || name_length >= sizeof(name_buf))
765 return NULL;
766
767 state.current_func = get_func(&state.funcs, name_buf);
768 state.funcs->color = 1;
769 v = &state.current_func->versions;
770
771 if (v->func) {
772 CheckasmFuncVersion *prev;
773 do {
774 /* Only test functions that haven't already been tested */
775 if (v->func == func)
776 return NULL;
777
778 if (v->ok)
779 ref = v->func;
780
781 prev = v;
782 } while ((v = v->next));
783
784 v = prev->next = checkasm_malloc(sizeof(CheckasmFuncVersion));
785 }
786
787 v->func = func;
788 v->ok = 1;
789 v->cpu = state.cpu_flag;
790 state.current_func_ver = v;
791
792 if (state.cpu_flag)
793 state.num_checked++;
794
795 return ref;
796 }
797
798 /* Decide whether or not the current function needs to be benchmarked */
checkasm_bench_func(void)799 int checkasm_bench_func(void)
800 {
801 return !state.num_failed && state.bench_pattern &&
802 !strncmp(state.current_func->name, state.bench_pattern, state.bench_pattern_len);
803 }
804
805 /* Indicate that the current test has failed */
checkasm_fail_func(const char * msg,...)806 void checkasm_fail_func(const char *msg, ...)
807 {
808 if (state.current_func_ver->cpu && state.current_func_ver->ok) {
809 va_list arg;
810
811 print_cpu_name();
812 fprintf(stderr, " %s_%s (", state.current_func->name, cpu_suffix(state.current_func_ver->cpu));
813 va_start(arg, msg);
814 vfprintf(stderr, msg, arg);
815 va_end(arg);
816 fprintf(stderr, ")\n");
817
818 state.current_func_ver->ok = 0;
819 state.num_failed++;
820 }
821 }
822
823 /* Get the benchmark context of the current function */
checkasm_get_perf_context(void)824 CheckasmPerf *checkasm_get_perf_context(void)
825 {
826 CheckasmPerf *perf = &state.current_func_ver->perf;
827 memset(perf, 0, sizeof(*perf));
828 perf->sysfd = state.sysfd;
829 return perf;
830 }
831
832 /* Print the outcome of all tests performed since the last time this function was called */
checkasm_report(const char * name,...)833 void checkasm_report(const char *name, ...)
834 {
835 static int prev_checked, prev_failed, max_length;
836
837 if (state.num_checked > prev_checked) {
838 int pad_length = max_length + 4;
839 va_list arg;
840
841 print_cpu_name();
842 pad_length -= fprintf(stderr, " - %s.", state.current_test_name);
843 va_start(arg, name);
844 pad_length -= vfprintf(stderr, name, arg);
845 va_end(arg);
846 fprintf(stderr, "%*c", FFMAX(pad_length, 0) + 2, '[');
847
848 if (state.num_failed == prev_failed)
849 color_printf(COLOR_GREEN, "OK");
850 else
851 color_printf(COLOR_RED, "FAILED");
852 fprintf(stderr, "]\n");
853
854 prev_checked = state.num_checked;
855 prev_failed = state.num_failed;
856 } else if (!state.cpu_flag) {
857 /* Calculate the amount of padding required to make the output vertically aligned */
858 int length = strlen(state.current_test_name);
859 va_list arg;
860
861 va_start(arg, name);
862 length += vsnprintf(NULL, 0, name, arg);
863 va_end(arg);
864
865 if (length > max_length)
866 max_length = length;
867 }
868 }
869
870 #define DEF_CHECKASM_CHECK_FUNC(type, fmt) \
871 int checkasm_check_##type(const char *const file, const int line, \
872 const type *buf1, ptrdiff_t stride1, \
873 const type *buf2, ptrdiff_t stride2, \
874 const int w, int h, const char *const name) \
875 { \
876 int y = 0; \
877 stride1 /= sizeof(*buf1); \
878 stride2 /= sizeof(*buf2); \
879 for (y = 0; y < h; y++) \
880 if (memcmp(&buf1[y*stride1], &buf2[y*stride2], w*sizeof(*buf1))) \
881 break; \
882 if (y == h) \
883 return 0; \
884 checkasm_fail_func("%s:%d", file, line); \
885 if (!state.verbose) \
886 return 1; \
887 fprintf(stderr, "%s:\n", name); \
888 while (h--) { \
889 for (int x = 0; x < w; x++) \
890 fprintf(stderr, " " fmt, buf1[x]); \
891 fprintf(stderr, " "); \
892 for (int x = 0; x < w; x++) \
893 fprintf(stderr, " " fmt, buf2[x]); \
894 fprintf(stderr, " "); \
895 for (int x = 0; x < w; x++) \
896 fprintf(stderr, "%c", buf1[x] != buf2[x] ? 'x' : '.'); \
897 buf1 += stride1; \
898 buf2 += stride2; \
899 fprintf(stderr, "\n"); \
900 } \
901 return 1; \
902 }
903
904 DEF_CHECKASM_CHECK_FUNC(uint8_t, "%02x")
905 DEF_CHECKASM_CHECK_FUNC(uint16_t, "%04x")
906 DEF_CHECKASM_CHECK_FUNC(int16_t, "%6d")
907 DEF_CHECKASM_CHECK_FUNC(int32_t, "%9d")
908