libavcodec/tableprint.h

   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 Libav.
   7  *
   8  * Libav 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  * Libav 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 Libav; 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 #define WRITE_ARRAY(prefix, type, name)                 \
  75     do {                                                \
  76         const size_t array_size = FF_ARRAY_ELEMS(name); \
  77         printf(prefix" "#type" "#name"[%zu] = {\n",     \
  78                array_size);                             \
  79         write_##type##_array(name, array_size);         \
  80         printf("};\n");                                 \
  81     } while(0)
  82
  83 #define WRITE_2D_ARRAY(prefix, type, name)                              \
  84     do {                                                                \
  85         const size_t array_size1 = FF_ARRAY_ELEMS(name);                \
  86         const size_t array_size2 = FF_ARRAY_ELEMS(name[0]);             \
  87         printf(prefix" "#type" "#name"[%zu][%zu] = {\n",                \
  88                array_size1, array_size2 );                              \
  89         write_##type##_2d_array(name, array_size1, array_size2);        \
  90         printf("};\n");                                                 \
  91     } while(0)
  92
  93
  94 WRITE_1D_FUNC(int8_t,   "%3"PRIi8, 15)
  95 WRITE_1D_FUNC(uint8_t,  "0x%02"PRIx8, 15)
  96 WRITE_1D_FUNC(uint16_t, "0x%08"PRIx16, 7)
  97 WRITE_1D_FUNC(uint32_t, "0x%08"PRIx32, 7)
  98 WRITE_1D_FUNC(float,    "%.18e", 3)
  99
 100 WRITE_2D_FUNC(int8_t)
 101 WRITE_2D_FUNC(uint8_t)
 102 WRITE_2D_FUNC(uint32_t)
 103 WRITE_2D_FUNC(float)
 104
 105 static inline void write_fileheader(void)
 106 {
 107     printf("/* This file was automatically generated. */\n");
 108     printf("#include <stdint.h>\n");
 109 }
 110
 111 #endif /* AVCODEC_TABLEPRINT_H */