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tableprint.h
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1 /*
2  * Generate a file for hardcoded tables
3  *
4  * Copyright (c) 2009 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (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 GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #ifndef AVCODEC_TABLEPRINT_H
24 #define AVCODEC_TABLEPRINT_H
25 
26 #include <inttypes.h>
27 #include <stdio.h>
28 
29 #include "libavutil/common.h"
30 
31 #define WRITE_1D_FUNC_ARGV(type, linebrk, fmtstr, ...)\
32 void write_##type##_array(const type *data, int len)\
33 {\
34  int i;\
35  printf(" ");\
36  for (i = 0; i < len - 1; i++) {\
37  printf(" "fmtstr",", __VA_ARGS__);\
38  if ((i & linebrk) == linebrk) printf("\n ");\
39  }\
40  printf(" "fmtstr"\n", __VA_ARGS__);\
41 }
42 
43 #define WRITE_1D_FUNC(type, fmtstr, linebrk)\
44  WRITE_1D_FUNC_ARGV(type, linebrk, fmtstr, data[i])
45 
46 #define WRITE_2D_FUNC(type)\
47 void write_##type##_2d_array(const void *arg, int len, int len2)\
48 {\
49  const type *data = arg;\
50  int i;\
51  printf(" {\n");\
52  for (i = 0; i < len; i++) {\
53  write_##type##_array(data + i * len2, len2);\
54  printf(i == len - 1 ? " }\n" : " }, {\n");\
55  }\
56 }
57 
58 /**
59  * @name Predefined functions for printing tables
60  *
61  * @{
62  */
63 void write_int8_t_array (const int8_t *, int);
64 void write_uint8_t_array (const uint8_t *, int);
65 void write_uint16_t_array (const uint16_t *, int);
66 void write_uint32_t_array (const uint32_t *, int);
67 void write_float_array (const float *, int);
68 void write_int8_t_2d_array (const void *, int, int);
69 void write_uint8_t_2d_array (const void *, int, int);
70 void write_uint32_t_2d_array(const void *, int, int);
71 void write_float_2d_array (const void *, int, int);
72 /** @} */ // end of printfuncs group
73 
74 /*
75  * MSVC doesn't have %zu, since it was introduced in C99,
76  * but has its own %Iu for printing size_t values.
77  */
78 #if defined(_MSC_VER)
79 #define FMT "Iu"
80 #else
81 #define FMT "zu"
82 #endif
83 
84 #define WRITE_ARRAY_ALIGNED(prefix, align, type, name) \
85  do { \
86  const size_t array_size = FF_ARRAY_ELEMS(name); \
87  printf(prefix" DECLARE_ALIGNED("#align", " \
88  #type", "#name")[%"FMT"] = {\n", \
89  array_size); \
90  write_##type##_array(name, array_size); \
91  printf("};\n"); \
92  } while(0)
93 
94 #define WRITE_ARRAY(prefix, type, name) \
95  do { \
96  const size_t array_size = FF_ARRAY_ELEMS(name); \
97  printf(prefix" "#type" "#name"[%"FMT"] = {\n", \
98  array_size); \
99  write_##type##_array(name, array_size); \
100  printf("};\n"); \
101  } while(0)
102 
103 #define WRITE_2D_ARRAY(prefix, type, name) \
104  do { \
105  const size_t array_size1 = FF_ARRAY_ELEMS(name); \
106  const size_t array_size2 = FF_ARRAY_ELEMS(name[0]); \
107  printf(prefix" "#type" "#name"[%"FMT"][%"FMT"] = {\n", \
108  array_size1, array_size2 ); \
109  write_##type##_2d_array(name, array_size1, array_size2); \
110  printf("};\n"); \
111  } while(0)
112 
113 
114 WRITE_1D_FUNC(int8_t, "%3"PRIi8, 15)
115 WRITE_1D_FUNC(uint8_t, "0x%02"PRIx8, 15)
116 WRITE_1D_FUNC(uint16_t, "0x%08"PRIx16, 7)
117 WRITE_1D_FUNC(int16_t, "%5"PRIi16, 7)
118 WRITE_1D_FUNC(uint32_t, "0x%08"PRIx32, 7)
119 WRITE_1D_FUNC(float, "%.18e", 3)
120 
121 WRITE_2D_FUNC(int8_t)
122 WRITE_2D_FUNC(uint8_t)
123 WRITE_2D_FUNC(uint32_t)
124 WRITE_2D_FUNC(float)
125 
126 static inline void write_fileheader(void)
127 {
128  printf("/* This file was automatically generated. */\n");
129  printf("#include <stdint.h>\n");
130 }
131 
132 #endif /* AVCODEC_TABLEPRINT_H */