FFmpeg
llviddspenc.c
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1 /*
2  * Copyright (c) 2016 Alexandra Hájková
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License along
17  * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19  */
20 
21 #include <string.h>
22 
23 #include "libavutil/common.h"
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/mem.h"
26 
28 
29 #include "checkasm.h"
30 
31 #define randomize_buffers(buf, size) \
32  do { \
33  int j; \
34  for (j = 0; j < size; j+=4) \
35  AV_WN32(buf + j, rnd()); \
36  } while (0)
37 
38 static const struct {uint8_t w, h, s;} planes[] = {
39  {16,16,16}, {21,23,25}, {32,17,48}, {15,128,16}, {128,127,128}
40 };
41 
42 #define MAX_STRIDE 128
43 #define MAX_HEIGHT 127
44 
46 {
47  int i;
54 
56  const uint8_t *src2, intptr_t w);
57 
58  memset(dst0, 0, MAX_STRIDE);
59  memset(dst1, 0, MAX_STRIDE);
61  memcpy(src1, src0, MAX_STRIDE);
63  memcpy(src3, src2, MAX_STRIDE);
64 
65  if (check_func(c->diff_bytes, "diff_bytes")) {
66  for (i = 0; i < 5; i ++) {
67  call_ref(dst0, src0, src2, planes[i].w);
68  call_new(dst1, src1, src3, planes[i].w);
69  if (memcmp(dst0, dst1, planes[i].w))
70  fail();
71  }
72  bench_new(dst1, src0, src2, planes[4].w);
73  }
74 }
75 
77 {
78  int i;
80  LOCAL_ALIGNED_32(uint8_t, dst1, [MAX_STRIDE * MAX_HEIGHT]);
81  LOCAL_ALIGNED_32(uint8_t, src0, [MAX_STRIDE * MAX_HEIGHT]);
82  LOCAL_ALIGNED_32(uint8_t, src1, [MAX_STRIDE * MAX_HEIGHT]);
83 
85  ptrdiff_t stride, ptrdiff_t width, int height);
86 
87  memset(dst0, 0, MAX_STRIDE * MAX_HEIGHT);
88  memset(dst1, 0, MAX_STRIDE * MAX_HEIGHT);
89  randomize_buffers(src0, MAX_STRIDE * MAX_HEIGHT);
90  memcpy(src1, src0, MAX_STRIDE * MAX_HEIGHT);
91 
92  if (check_func(c->sub_left_predict, "sub_left_predict")) {
93  for (i = 0; i < 5; i ++) {
94  call_ref(dst0, src0, planes[i].s, planes[i].w, planes[i].h);
95  call_new(dst1, src1, planes[i].s, planes[i].w, planes[i].h);
96  if (memcmp(dst0, dst1, planes[i].w * planes[i].h))
97  fail();
98  break;
99  }
100  bench_new(dst1, src0, planes[4].s, planes[4].w, planes[4].h);
101  }
102 }
103 
105 {
108 
109  check_diff_bytes(&c);
110  report("diff_bytes");
111 
113  report("sub_left_predict");
114 }
static void check_diff_bytes(LLVidEncDSPContext *c)
Definition: llviddspenc.c:45
Memory handling functions.
#define MAX_STRIDE
Definition: llviddspenc.c:42
#define MAX_HEIGHT
Definition: llviddspenc.c:43
#define src
Definition: vp8dsp.c:254
#define report
Definition: checkasm.h:124
av_cold void ff_llvidencdsp_init(LLVidEncDSPContext *c)
uint8_t
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
void(* diff_bytes)(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, intptr_t w)
#define height
uint8_t h
Definition: llviddspenc.c:38
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
#define fail()
Definition: checkasm.h:121
#define width
uint8_t s
Definition: llviddspenc.c:38
uint8_t w
Definition: llviddspenc.c:38
#define declare_func_emms(cpu_flags, ret,...)
Definition: checkasm.h:118
static void check_sub_left_pred(LLVidEncDSPContext *c)
Definition: llviddspenc.c:76
static const struct @316 planes[]
#define call_ref(...)
Definition: checkasm.h:127
#define src1
Definition: h264pred.c:139
#define AV_CPU_FLAG_MMX
standard MMX
Definition: cpu.h:31
#define check_func(func,...)
Definition: checkasm.h:112
#define src0
Definition: h264pred.c:138
#define LOCAL_ALIGNED_32(t, v,...)
Definition: internal.h:137
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
common internal and external API header
void checkasm_check_llviddspenc(void)
Definition: llviddspenc.c:104
#define randomize_buffers(buf, size)
Definition: llviddspenc.c:31
#define bench_new(...)
Definition: checkasm.h:254
#define call_new(...)
Definition: checkasm.h:194
void(* sub_left_predict)(uint8_t *dst, uint8_t *src, ptrdiff_t stride, ptrdiff_t width, int height)