path: root/libavcodec/tableprint.h (plain)
blob: 6f61c7124bd92dcb855ba25182bb4a8df0f86b5b

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
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