FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
vf_blend.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2016 Tiancheng "Timothy" Gu
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 #include "checkasm.h"
23 #include "libavfilter/blend.h"
24 #include "libavutil/common.h"
25 #include "libavutil/internal.h"
26 #include "libavutil/intreadwrite.h"
27 
28 #define WIDTH 256
29 #define HEIGHT 256
30 #define BUF_UNITS 3
31 #define SIZE_PER_UNIT (WIDTH * HEIGHT)
32 #define BUF_SIZE (BUF_UNITS * SIZE_PER_UNIT)
33 
34 #define randomize_buffers() \
35  do { \
36  int i, j; \
37  for (i = 0; i < HEIGHT; i++) { \
38  for (j = 0; j < WIDTH; j++) { \
39  top1[i * WIDTH + j] = \
40  top2[i * WIDTH + j] = i; \
41  bot1[i * WIDTH + j] = \
42  bot2[i * WIDTH + j] = j; \
43  } \
44  } \
45  for (i = 0; i < SIZE_PER_UNIT; i += 4) { \
46  uint32_t r = rnd(); \
47  AV_WN32A(dst1 + i, r); \
48  AV_WN32A(dst2 + i, r); \
49  } \
50  for (; i < BUF_SIZE; i += 4) { \
51  uint32_t r = rnd(); \
52  AV_WN32A(top1 + i, r); \
53  AV_WN32A(top2 + i, r); \
54  r = rnd(); \
55  AV_WN32A(bot1 + i, r); \
56  AV_WN32A(bot2 + i, r); \
57  r = rnd(); \
58  AV_WN32A(dst1 + i, r); \
59  AV_WN32A(dst2 + i, r); \
60  } \
61  } while (0)
62 
63 #define check_blend_func() \
64  do { \
65  int i; \
66  declare_func(void, const uint8_t *top, ptrdiff_t top_linesize, \
67  const uint8_t *bottom, ptrdiff_t bottom_linesize, \
68  uint8_t *dst, ptrdiff_t dst_linesize, \
69  ptrdiff_t width, ptrdiff_t height, \
70  struct FilterParams *param, double *values); \
71  \
72  for (i = 0; i < BUF_UNITS - 1; i++) { \
73  int src_offset = i * SIZE_PER_UNIT + i; /* Test various alignments */ \
74  int dst_offset = i * SIZE_PER_UNIT; /* dst must be aligned */ \
75  randomize_buffers(); \
76  call_ref(top1 + src_offset, WIDTH, bot1 + src_offset, WIDTH, \
77  dst1 + dst_offset, WIDTH, WIDTH, HEIGHT, &param, NULL); \
78  call_new(top2 + src_offset, WIDTH, bot2 + src_offset, WIDTH, \
79  dst2 + dst_offset, WIDTH, WIDTH, HEIGHT, &param, NULL); \
80  if (memcmp(top1, top2, BUF_SIZE) || memcmp(bot1, bot2, BUF_SIZE) || memcmp(dst1, dst2, BUF_SIZE)) \
81  fail(); \
82  } \
83  bench_new(top2, WIDTH / 4, bot2, WIDTH / 4, dst2, WIDTH / 4, \
84  WIDTH / 4, HEIGHT / 4, &param, NULL); \
85  } while (0)
86 
88 {
89  uint8_t *top1 = av_malloc(BUF_SIZE);
90  uint8_t *top2 = av_malloc(BUF_SIZE);
91  uint8_t *bot1 = av_malloc(BUF_SIZE);
92  uint8_t *bot2 = av_malloc(BUF_SIZE);
93  uint8_t *dst1 = av_malloc(BUF_SIZE);
94  uint8_t *dst2 = av_malloc(BUF_SIZE);
95  FilterParams param = {
96  .opacity = 1.0,
97  };
98 
99 #define check_and_report(name, val) \
100  param.mode = val; \
101  ff_blend_init(&param, 0); \
102  if (check_func(param.blend, #name)) \
103  check_blend_func();
104 
106  check_and_report(addition128, BLEND_ADDITION128)
110  check_and_report(difference128, BLEND_DIFFERENCE128)
121 
122  report("8bit");
123 
124  av_freep(&top1);
125  av_freep(&top2);
126  av_freep(&bot1);
127  av_freep(&bot2);
128  av_freep(&dst1);
129  av_freep(&dst2);
130 }
double opacity
Definition: blend.h:66
#define check_and_report(name, val)
#define report
Definition: checkasm.h:84
uint8_t
#define av_malloc(s)
common internal API header
static SDL_Surface * screen
Definition: ffplay.c:365
filter data
Definition: mlp.h:74
void checkasm_check_blend(void)
Definition: vf_blend.c:87
common internal and external API header
#define BUF_SIZE
Definition: vf_blend.c:32
Definition: blend.h:44
#define av_freep(p)