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https://github.com/FFmpeg/FFmpeg.git
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70d80ed40f
Also adds a lot of infrastructure necessary for it. Some of it is a bit ugly though. Increases binary size for hardcoded tables by about 12 kB, which is about 15 kB from qdm2_table minus data and code saved that was only used for creating it. Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
81 lines
3.0 KiB
C
81 lines
3.0 KiB
C
/*
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* Helpers for generating hard-coded VLC tables
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*
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* Copyright (c) 2014 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_TABLEPRINT_VLC_H
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#define AVCODEC_TABLEPRINT_VLC_H
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#define FFMPEG_CONFIG_H
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#define AVUTIL_LOG_H
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#define av_log(a, ...)
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#define av_dlog(a, ...)
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#define AVUTIL_MEM_H
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#define av_malloc(s) NULL
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#define av_malloc_array(a, b) NULL
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#define av_realloc_f(p, o, n) NULL
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#define av_free(p)
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#define av_freep(p)
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#define AVCODEC_AVCODEC_H
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#include "tableprint.h"
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#include "get_bits.h"
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#include "mathtables.c"
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#include "bitstream.c"
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#define REPLACE_DEFINE2(type) write_##type##_array
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#define REPLACE_DEFINE(type) REPLACE_DEFINE2(type)
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static void write_VLC_TYPE_array(const VLC_TYPE *p, int s) {
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REPLACE_DEFINE(VLC_TYPE)(p, s);
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}
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WRITE_2D_FUNC(VLC_TYPE)
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static void write_vlc_type(const VLC *vlc, VLC_TYPE (*base_table)[2], const char *base_table_name)
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{
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printf(" .bits = %i,\n", vlc->bits);
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// Unfortunately need to cast away const currently
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printf(" .table = (VLC_TYPE (*)[2])(%s + 0x%x),\n", base_table_name, (int)(vlc->table - base_table));
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printf(" .table_size = 0x%x,\n", vlc->table_size);
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printf(" .table_allocated = 0x%x,\n", vlc->table_allocated);
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}
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#define WRITE_VLC_TYPE(prefix, name, base_table) \
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do { \
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printf(prefix" VLC "#name" = {\n"); \
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write_vlc_type(&name, base_table, #base_table); \
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printf("};\n"); \
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} while(0)
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#define WRITE_VLC_ARRAY(prefix, name, base_table) \
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do { \
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int i; \
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const size_t array_size = FF_ARRAY_ELEMS(name); \
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printf(prefix" VLC "#name"[%"FMT"] = {{\n", \
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array_size); \
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for (i = 0; i < array_size; i++) { \
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write_vlc_type(name + i, \
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base_table, #base_table); \
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if (i != array_size - 1) printf("}, {\n"); \
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} \
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printf("}};\n"); \
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} while(0)
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#endif /* AVCODEC_TABLEPRINT_VLC_H */
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