FFmpeg
checkasm.h
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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 #ifndef TESTS_CHECKASM_CHECKASM_H
24 #define TESTS_CHECKASM_CHECKASM_H
25 
26 #include <stdint.h>
27 #include "config.h"
28 
29 #if CONFIG_LINUX_PERF
30 #include <unistd.h> // read(3)
31 #include <sys/ioctl.h>
32 #include <asm/unistd.h>
33 #include <linux/perf_event.h>
34 #elif CONFIG_MACOS_KPERF
35 #include "libavutil/macos_kperf.h"
36 #endif
37 
38 #include "libavutil/avstring.h"
39 #include "libavutil/cpu.h"
40 #include "libavutil/emms.h"
41 #include "libavutil/internal.h"
42 #include "libavutil/lfg.h"
43 #include "libavutil/timer.h"
44 
45 #ifdef _WIN32
46 #include <windows.h>
47 #if ARCH_X86_32
48 #include <setjmp.h>
49 typedef jmp_buf checkasm_context;
50 #define checkasm_save_context() checkasm_handle_signal(setjmp(checkasm_context_buf))
51 #define checkasm_load_context(s) longjmp(checkasm_context_buf, s)
52 #elif WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
53 /* setjmp/longjmp on Windows on architectures using SEH (all except x86_32)
54  * will try to use SEH to unwind the stack, which doesn't work for assembly
55  * functions without unwind information. */
56 typedef struct { CONTEXT c; int status; } checkasm_context;
57 #define checkasm_save_context() \
58  (checkasm_context_buf.status = 0, \
59  RtlCaptureContext(&checkasm_context_buf.c), \
60  checkasm_handle_signal(checkasm_context_buf.status))
61 #define checkasm_load_context(s) \
62  (checkasm_context_buf.status = s, \
63  RtlRestoreContext(&checkasm_context_buf.c, NULL))
64 #else
65 #define checkasm_context void*
66 #define checkasm_save_context() 0
67 #define checkasm_load_context() do {} while (0)
68 #endif
69 #elif defined(_WASI_EMULATED_SIGNAL)
70 #define checkasm_context void*
71 #define checkasm_save_context() 0
72 #define checkasm_load_context() do {} while (0)
73 #else
74 #include <setjmp.h>
75 typedef sigjmp_buf checkasm_context;
76 #define checkasm_save_context() checkasm_handle_signal(sigsetjmp(checkasm_context_buf, 1))
77 #define checkasm_load_context(s) siglongjmp(checkasm_context_buf, s)
78 #endif
79 
80 void checkasm_check_aacencdsp(void);
81 void checkasm_check_aacpsdsp(void);
82 void checkasm_check_ac3dsp(void);
83 void checkasm_check_aes(void);
84 void checkasm_check_afir(void);
85 void checkasm_check_alacdsp(void);
86 void checkasm_check_apv_dsp(void);
87 void checkasm_check_audiodsp(void);
88 void checkasm_check_av_tx(void);
89 void checkasm_check_blackdetect(void);
90 void checkasm_check_blend(void);
91 void checkasm_check_blockdsp(void);
92 void checkasm_check_bswapdsp(void);
93 void checkasm_check_colordetect(void);
94 void checkasm_check_colorspace(void);
95 void checkasm_check_diracdsp(void);
96 void checkasm_check_exrdsp(void);
97 void checkasm_check_fdctdsp(void);
98 void checkasm_check_fixed_dsp(void);
99 void checkasm_check_flacdsp(void);
100 void checkasm_check_float_dsp(void);
101 void checkasm_check_fmtconvert(void);
102 void checkasm_check_g722dsp(void);
103 void checkasm_check_h263dsp(void);
104 void checkasm_check_h264chroma(void);
105 void checkasm_check_h264dsp(void);
106 void checkasm_check_h264pred(void);
107 void checkasm_check_h264qpel(void);
108 void checkasm_check_hevc_add_res(void);
109 void checkasm_check_hevc_deblock(void);
110 void checkasm_check_hevc_idct(void);
111 void checkasm_check_hevc_pel(void);
112 void checkasm_check_hevc_sao(void);
113 void checkasm_check_huffyuvdsp(void);
114 void checkasm_check_idctdsp(void);
115 void checkasm_check_jpeg2000dsp(void);
116 void checkasm_check_llauddsp(void);
117 void checkasm_check_lls(void);
118 void checkasm_check_llviddsp(void);
119 void checkasm_check_llviddspenc(void);
120 void checkasm_check_lpc(void);
121 void checkasm_check_motion(void);
122 void checkasm_check_mpegvideoencdsp(void);
123 void checkasm_check_nlmeans(void);
124 void checkasm_check_opusdsp(void);
125 void checkasm_check_pixblockdsp(void);
126 void checkasm_check_sbrdsp(void);
127 void checkasm_check_rv34dsp(void);
128 void checkasm_check_rv40dsp(void);
129 void checkasm_check_scene_sad(void);
130 void checkasm_check_svq1enc(void);
131 void checkasm_check_synth_filter(void);
132 void checkasm_check_sw_gbrp(void);
133 void checkasm_check_sw_range_convert(void);
134 void checkasm_check_sw_rgb(void);
135 void checkasm_check_sw_scale(void);
136 void checkasm_check_sw_yuv2rgb(void);
137 void checkasm_check_sw_yuv2yuv(void);
138 void checkasm_check_takdsp(void);
139 void checkasm_check_utvideodsp(void);
140 void checkasm_check_v210dec(void);
141 void checkasm_check_v210enc(void);
142 void checkasm_check_vc1dsp(void);
143 void checkasm_check_vf_bwdif(void);
144 void checkasm_check_vf_eq(void);
145 void checkasm_check_vf_gblur(void);
146 void checkasm_check_vf_hflip(void);
147 void checkasm_check_vf_threshold(void);
148 void checkasm_check_vf_sobel(void);
149 void checkasm_check_vp8dsp(void);
150 void checkasm_check_vp9dsp(void);
151 void checkasm_check_videodsp(void);
152 void checkasm_check_vorbisdsp(void);
153 void checkasm_check_vvc_alf(void);
154 void checkasm_check_vvc_mc(void);
155 void checkasm_check_vvc_sao(void);
156 
157 struct CheckasmPerf;
158 
159 void *checkasm_check_func(void *func, const char *name, ...) av_printf_format(2, 3);
160 int checkasm_bench_func(void);
161 int checkasm_fail_func(const char *msg, ...) av_printf_format(1, 2);
162 struct CheckasmPerf *checkasm_get_perf_context(void);
163 void checkasm_report(const char *name, ...) av_printf_format(1, 2);
164 void checkasm_set_signal_handler_state(int enabled);
165 int checkasm_handle_signal(int s);
166 extern checkasm_context checkasm_context_buf;
167 
168 /* float compare utilities */
169 int float_near_ulp(float a, float b, unsigned max_ulp);
170 int float_near_abs_eps(float a, float b, float eps);
171 int float_near_abs_eps_ulp(float a, float b, float eps, unsigned max_ulp);
172 int float_near_ulp_array(const float *a, const float *b, unsigned max_ulp,
173  unsigned len);
174 int float_near_abs_eps_array(const float *a, const float *b, float eps,
175  unsigned len);
176 int float_near_abs_eps_array_ulp(const float *a, const float *b, float eps,
177  unsigned max_ulp, unsigned len);
178 int double_near_abs_eps(double a, double b, double eps);
179 int double_near_abs_eps_array(const double *a, const double *b, double eps,
180  unsigned len);
181 
182 extern AVLFG checkasm_lfg;
183 #define rnd() av_lfg_get(&checkasm_lfg)
184 
185 static av_unused void *func_ref, *func_new;
186 
187 extern uint64_t bench_runs;
188 
189 /* Decide whether or not the specified function needs to be tested */
190 #define check_func(func, ...) (checkasm_save_context(), func_ref = checkasm_check_func((func_new = func), __VA_ARGS__))
191 
192 /* Declare the function prototype. The first argument is the return value, the remaining
193  * arguments are the function parameters. Naming parameters is optional. */
194 #define declare_func(ret, ...) declare_new(ret, __VA_ARGS__) typedef ret func_type(__VA_ARGS__)
195 #define declare_func_float(ret, ...) declare_new_float(ret, __VA_ARGS__) typedef ret func_type(__VA_ARGS__)
196 #define declare_func_emms(cpu_flags, ret, ...) declare_new_emms(cpu_flags, ret, __VA_ARGS__) typedef ret func_type(__VA_ARGS__)
197 
198 /* Indicate that the current test has failed */
199 #define fail() checkasm_fail_func("%s:%d", av_basename(__FILE__), __LINE__)
200 
201 /* Print the test outcome */
202 #define report checkasm_report
203 
204 /* Call the reference function */
205 #define call_ref(...)\
206  (checkasm_set_signal_handler_state(1),\
207  ((func_type *)func_ref)(__VA_ARGS__));\
208  checkasm_set_signal_handler_state(0)
209 
210 #if ARCH_X86 && HAVE_X86ASM
211 /* Verifies that clobbered callee-saved registers are properly saved and restored
212  * and that either no MMX registers are touched or emms is issued */
213 void checkasm_checked_call(void *func, ...);
214 /* Verifies that clobbered callee-saved registers are properly saved and restored
215  * and issues emms for asm functions which are not required to do so */
216 void checkasm_checked_call_emms(void *func, ...);
217 /* Verifies that clobbered callee-saved registers are properly saved and restored
218  * but doesn't issue emms. Meant for dsp functions returning float or double */
219 void checkasm_checked_call_float(void *func, ...);
220 
221 #if ARCH_X86_64
222 /* Evil hack: detect incorrect assumptions that 32-bit ints are zero-extended to 64-bit.
223  * This is done by clobbering the stack with junk around the stack pointer and calling the
224  * assembly function through checked_call() with added dummy arguments which forces all
225  * real arguments to be passed on the stack and not in registers. For 32-bit arguments the
226  * upper half of the 64-bit register locations on the stack will now contain junk which will
227  * cause misbehaving functions to either produce incorrect output or segfault. Note that
228  * even though this works extremely well in practice, it's technically not guaranteed
229  * and false negatives is theoretically possible, but there can never be any false positives.
230  */
231 void checkasm_stack_clobber(uint64_t clobber, ...);
232 #define declare_new(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__)\
233  = (void *)checkasm_checked_call;
234 #define declare_new_float(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__)\
235  = (void *)checkasm_checked_call_float;
236 #define declare_new_emms(cpu_flags, ret, ...) \
237  ret (*checked_call)(void *, int, int, int, int, int, __VA_ARGS__) = \
238  ((cpu_flags) & av_get_cpu_flags()) ? (void *)checkasm_checked_call_emms : \
239  (void *)checkasm_checked_call;
240 #define CLOB (UINT64_C(0xdeadbeefdeadbeef))
241 #define call_new(...) (checkasm_set_signal_handler_state(1),\
242  checkasm_stack_clobber(CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,\
243  CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB),\
244  checked_call(func_new, 0, 0, 0, 0, 0, __VA_ARGS__));\
245  checkasm_set_signal_handler_state(0)
246 #elif ARCH_X86_32
247 #define declare_new(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call;
248 #define declare_new_float(ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = (void *)checkasm_checked_call_float;
249 #define declare_new_emms(cpu_flags, ret, ...) ret (*checked_call)(void *, __VA_ARGS__) = \
250  ((cpu_flags) & av_get_cpu_flags()) ? (void *)checkasm_checked_call_emms : \
251  (void *)checkasm_checked_call;
252 #define call_new(...)\
253  (checkasm_set_signal_handler_state(1),\
254  checked_call(func_new, __VA_ARGS__));\
255  checkasm_set_signal_handler_state(0)
256 #endif
257 #elif ARCH_ARM && HAVE_ARMV5TE_EXTERNAL
258 /* Use a dummy argument, to offset the real parameters by 2, not only 1.
259  * This makes sure that potential 8-byte-alignment of parameters is kept the same
260  * even when the extra parameters have been removed. */
261 void checkasm_checked_call_vfp(void *func, int dummy, ...);
262 void checkasm_checked_call_novfp(void *func, int dummy, ...);
263 extern void (*checkasm_checked_call)(void *func, int dummy, ...);
264 #define declare_new(ret, ...) ret (*checked_call)(void *, int dummy, __VA_ARGS__, \
265  int, int, int, int, int, int, int, int, \
266  int, int, int, int, int, int, int) = (void *)checkasm_checked_call;
267 #define call_new(...) \
268  (checkasm_set_signal_handler_state(1),\
269  checked_call(func_new, 0, __VA_ARGS__, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0));\
270  checkasm_set_signal_handler_state(0)
271 #elif ARCH_AARCH64 && !defined(__APPLE__)
272 void checkasm_stack_clobber(uint64_t clobber, ...);
273 void checkasm_checked_call(void *func, ...);
274 #define declare_new(ret, ...) ret (*checked_call)(void *, int, int, int, int, int, int, int, __VA_ARGS__,\
275  int, int, int, int, int, int, int, int,\
276  int, int, int, int, int, int, int)\
277  = (void *)checkasm_checked_call;
278 #define CLOB (UINT64_C(0xdeadbeefdeadbeef))
279 #define call_new(...) (checkasm_set_signal_handler_state(1),\
280  checkasm_stack_clobber(CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,\
281  CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB,CLOB),\
282  checked_call(func_new, 0, 0, 0, 0, 0, 0, 0, __VA_ARGS__,\
283  7, 6, 5, 4, 3, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0));\
284  checkasm_set_signal_handler_state(0)
285 #elif ARCH_RISCV
286 void checkasm_set_function(void *);
287 void *checkasm_get_wrapper(void);
288 
289 #if HAVE_RV && (__riscv_xlen == 64) && defined (__riscv_d)
290 #define declare_new(ret, ...) \
291  ret (*checked_call)(__VA_ARGS__) = checkasm_get_wrapper();
292 #define call_new(...) \
293  (checkasm_set_signal_handler_state(1),\
294  checkasm_set_function(func_new), checked_call(__VA_ARGS__));\
295  checkasm_set_signal_handler_state(0)
296 #else
297 #define declare_new(ret, ...)
298 #define call_new(...)\
299  (checkasm_set_signal_handler_state(1),\
300  ((func_type *)func_new)(__VA_ARGS__));\
301  checkasm_set_signal_handler_state(0)
302 #endif
303 #else
304 #define declare_new(ret, ...)
305 #define declare_new_float(ret, ...)
306 #define declare_new_emms(cpu_flags, ret, ...)
307 /* Call the function */
308 #define call_new(...)\
309  (checkasm_set_signal_handler_state(1),\
310  ((func_type *)func_new)(__VA_ARGS__));\
311  checkasm_set_signal_handler_state(0)
312 #endif
313 
314 #ifndef declare_new_emms
315 #define declare_new_emms(cpu_flags, ret, ...) declare_new(ret, __VA_ARGS__)
316 #endif
317 #ifndef declare_new_float
318 #define declare_new_float(ret, ...) declare_new(ret, __VA_ARGS__)
319 #endif
320 
321 typedef struct CheckasmPerf {
322  int sysfd;
323  uint64_t cycles;
324  int iterations;
325 } CheckasmPerf;
326 
327 #if defined(AV_READ_TIME) || CONFIG_LINUX_PERF || CONFIG_MACOS_KPERF
328 
329 #if CONFIG_LINUX_PERF
330 #define PERF_START(t) do { \
331  ioctl(sysfd, PERF_EVENT_IOC_RESET, 0); \
332  ioctl(sysfd, PERF_EVENT_IOC_ENABLE, 0); \
333 } while (0)
334 #define PERF_STOP(t) do { \
335  int ret; \
336  ioctl(sysfd, PERF_EVENT_IOC_DISABLE, 0); \
337  ret = read(sysfd, &t, sizeof(t)); \
338  (void)ret; \
339 } while (0)
340 #elif CONFIG_MACOS_KPERF
341 #define PERF_START(t) t = ff_kperf_cycles()
342 #define PERF_STOP(t) t = ff_kperf_cycles() - t
343 #else
344 #define PERF_START(t) t = AV_READ_TIME()
345 #define PERF_STOP(t) t = AV_READ_TIME() - t
346 #endif
347 
348 /* Benchmark the function */
349 #define bench_new(...)\
350  do {\
351  if (checkasm_bench_func()) {\
352  struct CheckasmPerf *perf = checkasm_get_perf_context();\
353  av_unused const int sysfd = perf->sysfd;\
354  func_type *tfunc = func_new;\
355  uint64_t tsum = 0;\
356  uint64_t ti, tcount = 0;\
357  uint64_t t = 0; \
358  const uint64_t truns = bench_runs;\
359  checkasm_set_signal_handler_state(1);\
360  for (ti = 0; ti < truns; ti++) {\
361  PERF_START(t);\
362  tfunc(__VA_ARGS__);\
363  tfunc(__VA_ARGS__);\
364  tfunc(__VA_ARGS__);\
365  tfunc(__VA_ARGS__);\
366  PERF_STOP(t);\
367  if (t*tcount <= tsum*4 && ti > 0) {\
368  tsum += t;\
369  tcount++;\
370  }\
371  }\
372  emms_c();\
373  perf->cycles += tsum;\
374  perf->iterations += tcount;\
375  checkasm_set_signal_handler_state(0);\
376  }\
377  } while (0)
378 #else
379 #define bench_new(...) while(0)
380 #define PERF_START(t) while(0)
381 #define PERF_STOP(t) while(0)
382 #endif
383 
384 #define BUF_RECT(type, name, w, h) \
385  LOCAL_ALIGNED_32(type, name##_buf, [((h)+32)*(FFALIGN(w,64)+64) + 64]); \
386  av_unused ptrdiff_t name##_stride = sizeof(type)*(FFALIGN(w,64)+64); \
387  av_unused int name##_buf_h = (h)+32; \
388  type *name = name##_buf + (FFALIGN(w,64)+64)*16 + 64
389 
390 #define PIXEL_RECT(name, w, h) \
391  LOCAL_ALIGNED_32(uint8_t, name##_buf, [sizeof(uint16_t) * (((h)+32)*(FFALIGN(w,64)+64) + 64)],); \
392  av_unused ptrdiff_t name##_stride = sizeof(uint16_t) * (FFALIGN(w,64)+64); \
393  av_unused int name##_buf_h = (h)+32; \
394  uint8_t *name = name##_buf + (FFALIGN(w,64)+64)*16 + 64
395 
396 #define CLEAR_BUF_RECT(name) \
397  memset(name##_buf, 0x99, name##_stride * name##_buf_h + 64)
398 #define CLEAR_PIXEL_RECT(name) \
399  CLEAR_BUF_RECT(name)
400 
401 #define DECL_CHECKASM_CHECK_FUNC(type) \
402 int checkasm_check_##type(const char *file, int line, \
403  const type *buf1, ptrdiff_t stride1, \
404  const type *buf2, ptrdiff_t stride2, \
405  int w, int h, const char *name, \
406  int align_w, int align_h, \
407  int padding)
408 
409 DECL_CHECKASM_CHECK_FUNC(uint8_t);
410 DECL_CHECKASM_CHECK_FUNC(uint16_t);
411 DECL_CHECKASM_CHECK_FUNC(uint32_t);
412 DECL_CHECKASM_CHECK_FUNC(int16_t);
413 DECL_CHECKASM_CHECK_FUNC(int32_t);
414 
415 #define PASTE(a,b) a ## b
416 #define CONCAT(a,b) PASTE(a,b)
417 
418 #define checkasm_check2(prefix, ...) CONCAT(checkasm_check_, prefix)(__FILE__, __LINE__, __VA_ARGS__)
419 #define checkasm_check(prefix, ...) checkasm_check2(prefix, __VA_ARGS__, 0, 0, 0)
420 /* Check a pointer from BUF_RECT, checking whether there have been
421  * writes outside of the designated area. */
422 #define checkasm_check_padded(...) \
423  checkasm_check2(__VA_ARGS__, 1, 1, 8)
424 /* Check a pointer from BUF_RECT, checking whether there have been
425  * writes outside of the designated area. Allow writing slightly past the
426  * end of the buffer, by aligning w/h to align_w/align_h, and checking
427  * for overwrites outside of that. */
428 #define checkasm_check_padded_align(...) \
429  checkasm_check2(__VA_ARGS__, 8)
430 
431 /* This assumes that there is a local variable named "bit_depth".
432  * For tests that don't have that and only operate on a single
433  * bitdepth, just call checkasm_check(uint8_t, ...) directly. */
434 #define checkasm_check_pixel2(buf1, stride1, buf2, stride2, ...) \
435  ((bit_depth > 8) ? \
436  checkasm_check2(uint16_t, (const uint16_t*)buf1, stride1, \
437  (const uint16_t*)buf2, stride2, \
438  __VA_ARGS__) : \
439  checkasm_check2(uint8_t, (const uint8_t*) buf1, stride1, \
440  (const uint8_t*) buf2, stride2, \
441  __VA_ARGS__))
442 #define checkasm_check_pixel(...) \
443  checkasm_check_pixel2(__VA_ARGS__, 0, 0, 0)
444 #define checkasm_check_pixel_padded(...) \
445  checkasm_check_pixel2(__VA_ARGS__, 1, 1, 8)
446 #define checkasm_check_pixel_padded_align(...) \
447  checkasm_check_pixel2(__VA_ARGS__, 8)
448 
449 /* This assumes that there is a local variable named "bit_depth"
450  * and that the type-specific buffers obey the name ## _BITDEPTH
451  * convention.
452  * For tests that don't have that and only operate on a single
453  * bitdepth, just call checkasm_check(uint8_t, ...) directly. */
454 #define checkasm_check_dctcoef(buf1, stride1, buf2, stride2, ...) \
455  ((bit_depth > 8) ? \
456  checkasm_check(int32_t, buf1 ## _32, stride1, \
457  buf2 ## _32, stride2, \
458  __VA_ARGS__) : \
459  checkasm_check(int16_t, buf1 ## _16, stride1, \
460  buf2 ## _16, stride2, \
461  __VA_ARGS__))
462 
463 #endif /* TESTS_CHECKASM_CHECKASM_H */
checkasm_check_nlmeans
void checkasm_check_nlmeans(void)
Definition: vf_nlmeans.c:32
func
int(* func)(AVBPrint *dst, const char *in, const char *arg)
Definition: jacosubdec.c:68
checkasm_lfg
AVLFG checkasm_lfg
Definition: checkasm.c:428
checkasm_check_sw_gbrp
void checkasm_check_sw_gbrp(void)
Definition: sw_gbrp.c:398
checkasm_check_vp8dsp
void checkasm_check_vp8dsp(void)
Definition: vp8dsp.c:511
name
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf default minimum maximum flags name is the option name
Definition: writing_filters.txt:88
checkasm_check_fdctdsp
void checkasm_check_fdctdsp(void)
Definition: fdctdsp.c:67
checkasm_check_videodsp
void checkasm_check_videodsp(void)
Definition: videodsp.c:80
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void checkasm_check_v210dec(void)
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void checkasm_check_sw_yuv2yuv(void)
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checkasm_check_hevc_idct
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void checkasm_check_sw_scale(void)
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checkasm_bench_func
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#define b
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checkasm_check_aacpsdsp
void checkasm_check_aacpsdsp(void)
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CheckasmPerf::sysfd
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checkasm_check_h264dsp
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float_near_abs_eps_ulp
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CheckasmPerf
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void checkasm_check_vf_gblur(void)
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checkasm_check_vvc_mc
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Definition: vorbisdsp.c:76
checkasm_check_rv40dsp
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Definition: rv40dsp.c:71
c
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
checkasm_check_vc1dsp
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Definition: vc1dsp.c:476
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Definition: h264chroma.c:81
AVLFG
Context structure for the Lagged Fibonacci PRNG.
Definition: lfg.h:33
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Definition: llauddsp.c:108
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checkasm_check_llviddsp
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Definition: diracdsp.c:85
checkasm_check_h264pred
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Definition: h264pred.c:233
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
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Definition: huffyuvdsp.c:95
CheckasmPerf::cycles
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Definition: checkasm.h:323
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Definition: vf_colorspace.c:309
checkasm_check_utvideodsp
void checkasm_check_utvideodsp(void)
Definition: utvideodsp.c:90
emms.h
checkasm_check_sw_range_convert
void checkasm_check_sw_range_convert(void)
Definition: sw_range_convert.c:224
checkasm_check_mpegvideoencdsp
void checkasm_check_mpegvideoencdsp(void)
Definition: mpegvideoencdsp.c:132
checkasm_check_flacdsp
void checkasm_check_flacdsp(void)
Definition: flacdsp.c:155
internal.h
checkasm_check_idctdsp
void checkasm_check_idctdsp(void)
Definition: idctdsp.c:95
checkasm_check_synth_filter
void checkasm_check_synth_filter(void)
Definition: synth_filter.c:47
checkasm_check_av_tx
void checkasm_check_av_tx(void)
Definition: av_tx.c:102
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void checkasm_check_blockdsp(void)
Definition: blockdsp.c:78
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Definition: lpc.c:96
CONTEXT
#define CONTEXT
Definition: af_asetrate.c:32
len
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Definition: vorbis_enc_data.h:426
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Definition: g722dsp.c:53
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Definition: svq1enc.c:63
checkasm_check_vf_hflip
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Definition: vf_hflip.c:72
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Definition: lls.c:84
checkasm_check_scene_sad
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Definition: af_afir.c:144
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Definition: vf_convolution.c:100
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void checkasm_check_v210enc(void)
Definition: v210enc.c:83
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Definition: sbrdsp.c:257
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Definition: hevc_deblock.c:264
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Definition: checkasm.c:1125
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#define DECL_CHECKASM_CHECK_FUNC(type)
Definition: checkasm.h:401
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Definition: apv_dsp.c:96
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Definition: jpeg2000dsp.c:92
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Definition: hevc_add_res.c:87
int32_t
int32_t
Definition: audioconvert.c:56
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Definition: checkasm.h:75
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void checkasm_check_rv34dsp(void)
Definition: rv34dsp.c:82
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Definition: audiodsp.c:52
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Definition: checkasm.c:436
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void checkasm_check_vvc_alf(void)
Definition: vvc_alf.c:178
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void checkasm_check_exrdsp(void)
Definition: exrdsp.c:77
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Definition: opusdsp.c:86
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