1/*
2 * Helpers for generating hard-coded VLC tables
3 *
4 * Copyright (c) 2014 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_VLC_H
24#define AVCODEC_TABLEPRINT_VLC_H
25
26#define AVUTIL_LOG_H
27#define av_log(a, ...) while(0)
28#define ff_dlog(a, ...) while(0)
29#define AVUTIL_MEM_H
30#define av_malloc(s) NULL
31#define av_malloc_array(a, b) NULL
32#define av_realloc_f(p, o, n) NULL
33#define av_free(p) while(0)
34#define av_freep(p) while(0)
35#define AVUTIL_INTERNAL_H
36#define avpriv_request_sample(...)
37#include "tableprint.h"
38#include "vlc.h"
39#include "libavutil/reverse.c"
40#include "vlc.c"
41
42// The following will have to be modified if VLCBaseType changes.
43WRITE_1D_FUNC_ARGV(VLCElem, 3, "{ .sym =%5" PRId16 ", .len =%2"PRIi16 " }",
44                   data[i].sym, data[i].len)
45
46static void write_vlc_type(const VLC *vlc, const VLCElem *base_table, const char *base_table_name)
47{
48    printf("    .bits = %i,\n", vlc->bits);
49    // Unfortunately need to cast away const currently
50    printf("    .table = (VLCElem *)(%s + 0x%x),\n", base_table_name, (int)(vlc->table - base_table));
51    printf("    .table_size = 0x%x,\n", vlc->table_size);
52    printf("    .table_allocated = 0x%x,\n", vlc->table_allocated);
53}
54
55#define WRITE_VLC_TABLE(prefix, name)                   \
56    WRITE_ARRAY(prefix, VLCElem, name)
57
58#define WRITE_VLC_TYPE(prefix, name, base_table)        \
59    do {                                                \
60        printf(prefix" VLC "#name" = {\n");             \
61        write_vlc_type(&name, base_table, #base_table); \
62        printf("};\n");                                 \
63    } while(0)
64
65#define WRITE_VLC_ARRAY(prefix, name, base_table)       \
66    do {                                                \
67        int i;                                          \
68        const size_t array_size = FF_ARRAY_ELEMS(name); \
69        printf(prefix" VLC "#name"[%"FMT"] = {{\n",     \
70               array_size);                             \
71        for (i = 0; i < array_size; i++) {              \
72            write_vlc_type(name + i,                    \
73                           base_table, #base_table);    \
74            if (i != array_size - 1) printf("}, {\n");  \
75        }                                               \
76        printf("}};\n");                                \
77    } while(0)
78
79#endif /* AVCODEC_TABLEPRINT_VLC_H */
80