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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(prefix, type, name)                 \
  85.     do {                                                \
  86.         const size_t array_size = FF_ARRAY_ELEMS(name); \
  87.         printf(prefix" "#type" "#name"[%"FMT"] = {\n",  \
  88.                array_size);                             \
  89.         write_##type##_array(name, array_size);         \
  90.         printf("};\n");                                 \
  91.     } while(0)
  92.  
  93. #define WRITE_2D_ARRAY(prefix, type, name)                              \
  94.     do {                                                                \
  95.         const size_t array_size1 = FF_ARRAY_ELEMS(name);                \
  96.         const size_t array_size2 = FF_ARRAY_ELEMS(name[0]);             \
  97.         printf(prefix" "#type" "#name"[%"FMT"][%"FMT"] = {\n",          \
  98.                array_size1, array_size2 );                              \
  99.         write_##type##_2d_array(name, array_size1, array_size2);        \
  100.         printf("};\n");                                                 \
  101.     } while(0)
  102.  
  103.  
  104. WRITE_1D_FUNC(int8_t,   "%3"PRIi8, 15)
  105. WRITE_1D_FUNC(uint8_t,  "0x%02"PRIx8, 15)
  106. WRITE_1D_FUNC(uint16_t, "0x%08"PRIx16, 7)
  107. WRITE_1D_FUNC(uint32_t, "0x%08"PRIx32, 7)
  108. WRITE_1D_FUNC(float,    "%.18e", 3)
  109.  
  110. WRITE_2D_FUNC(int8_t)
  111. WRITE_2D_FUNC(uint8_t)
  112. WRITE_2D_FUNC(uint32_t)
  113. WRITE_2D_FUNC(float)
  114.  
  115. static inline void write_fileheader(void)
  116. {
  117.     printf("/* This file was automatically generated. */\n");
  118.     printf("#include <stdint.h>\n");
  119. }
  120.  
  121. #endif /* AVCODEC_TABLEPRINT_H */
  122.