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/*
* Copyright (c) The FFmpeg developers
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Internal utilities for text formatters.
*/
#ifndef FFTOOLS_TEXTFORMAT_TF_INTERNAL_H
#define FFTOOLS_TEXTFORMAT_TF_INTERNAL_H
#include "avtextformat.h"
#define DEFINE_FORMATTER_CLASS(name) \
static const AVClass name##_class = { \
.class_name = #name, \
.item_name = av_default_item_name, \
.option = name##_options \
}
/**
* Safely validate and access a section at a given level
*/
static inline const AVTextFormatSection *tf_get_section(AVTextFormatContext *tfc, int level)
{
if (!tfc || level < 0 || level >= SECTION_MAX_NB_LEVELS || !tfc->section[level]) {
if (tfc)
av_log(tfc, AV_LOG_ERROR, "Invalid section access at level %d\n", level);
return NULL;
}
return tfc->section[level];
}
/**
* Safely access the parent section
*/
static inline const AVTextFormatSection *tf_get_parent_section(AVTextFormatContext *tfc, int level)
{
if (level <= 0)
return NULL;
return tf_get_section(tfc, level - 1);
}
static inline void writer_w8(AVTextFormatContext *wctx, int b)
{
wctx->writer->writer->writer_w8(wctx->writer, b);
}
static inline void writer_put_str(AVTextFormatContext *wctx, const char *str)
{
wctx->writer->writer->writer_put_str(wctx->writer, str);
}
static inline void writer_printf(AVTextFormatContext *wctx, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
wctx->writer->writer->writer_vprintf(wctx->writer, fmt, args);
va_end(args);
}
#endif /* FFTOOLS_TEXTFORMAT_TF_INTERNAL_H */
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