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_int32_t_array (const int32_t *, int);
68 void write_float_array (const float *, int);
69 void write_int8_t_2d_array (const void *, int, int);
70 void write_uint8_t_2d_array (const void *, int, int);
71 void write_uint32_t_2d_array(const void *, int, int);
72 void write_float_2d_array (const void *, int, int);
73 /** @} */ // end of printfuncs group
74
75 /*
76 * MSVC doesn't have %zu, since it was introduced in C99,
77 * but has its own %Iu for printing size_t values.
78 */
79 #if defined(_MSC_VER)
80 #define FMT "Iu"
81 #else
82 #define FMT "zu"
83 #endif
84
85 #define WRITE_ARRAY_ALIGNED(prefix, align, type, name) \
86 do { \
87 const size_t array_size = FF_ARRAY_ELEMS(name); \
88 printf(prefix" DECLARE_ALIGNED("#align", " \
89 #type", "#name")[%"FMT"] = {\n", \
90 array_size); \
91 write_##type##_array(name, array_size); \
92 printf("};\n"); \
93 } while(0)
94
95 #define WRITE_ARRAY(prefix, type, name) \
96 do { \
97 const size_t array_size = FF_ARRAY_ELEMS(name); \
98 printf(prefix" "#type" "#name"[%"FMT"] = {\n", \
99 array_size); \
100 write_##type##_array(name, array_size); \
101 printf("};\n"); \
102 } while(0)
103
104 #define WRITE_2D_ARRAY(prefix, type, name) \
105 do { \
106 const size_t array_size1 = FF_ARRAY_ELEMS(name); \
107 const size_t array_size2 = FF_ARRAY_ELEMS(name[0]); \
108 printf(prefix" "#type" "#name"[%"FMT"][%"FMT"] = {\n", \
109 array_size1, array_size2 ); \
110 write_##type##_2d_array(name, array_size1, array_size2); \
111 printf("};\n"); \
112 } while(0)
113
114
115 WRITE_1D_FUNC(int8_t, "%3"PRIi8, 15)
116 WRITE_1D_FUNC(uint8_t, "0x%02"PRIx8, 15)
117 WRITE_1D_FUNC(uint16_t, "0x%08"PRIx16, 7)
118 WRITE_1D_FUNC(int16_t, "%5"PRIi16, 7)
119 WRITE_1D_FUNC(uint32_t, "0x%08"PRIx32, 7)
120 WRITE_1D_FUNC(int32_t, "0x%08"PRIx32, 7)
121 WRITE_1D_FUNC(float, "%.18e", 3)
122
WRITE_2D_FUNC(int8_t)123 WRITE_2D_FUNC(int8_t)
124 WRITE_2D_FUNC(uint8_t)
125 WRITE_2D_FUNC(uint32_t)
126 WRITE_2D_FUNC(float)
127
128 static inline void write_fileheader(void)
129 {
130 printf("/* This file was automatically generated. */\n");
131 printf("#include <stdint.h>\n");
132 }
133
134 #endif /* AVCODEC_TABLEPRINT_H */
135