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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
*/
#include <limits.h>
#include <stdarg.h>
#include "avtextwriters.h"
#include "libavutil/opt.h"
#include "libavutil/bprint.h"
/* Buffer Writer */
# define WRITER_NAME "bufferwriter"
typedef struct BufferWriterContext {
const AVClass *class;
AVBPrint *buffer;
} BufferWriterContext;
static const char *bufferwriter_get_name(void *ctx)
{
return WRITER_NAME;
}
static const AVClass bufferwriter_class = {
.class_name = WRITER_NAME,
.item_name = bufferwriter_get_name,
};
static void buffer_w8(AVTextWriterContext *wctx, int b)
{
BufferWriterContext *ctx = wctx->priv;
av_bprintf(ctx->buffer, "%c", b);
}
static void buffer_put_str(AVTextWriterContext *wctx, const char *str)
{
BufferWriterContext *ctx = wctx->priv;
av_bprintf(ctx->buffer, "%s", str);
}
static void buffer_printf(AVTextWriterContext *wctx, const char *fmt, ...)
{
BufferWriterContext *ctx = wctx->priv;
va_list vargs;
va_start(vargs, fmt);
av_vbprintf(ctx->buffer, fmt, vargs);
va_end(vargs);
}
const AVTextWriter avtextwriter_buffer = {
.name = WRITER_NAME,
.priv_size = sizeof(BufferWriterContext),
.priv_class = &bufferwriter_class,
.writer_put_str = buffer_put_str,
.writer_printf = buffer_printf,
.writer_w8 = buffer_w8
};
int avtextwriter_create_buffer(AVTextWriterContext **pwctx, AVBPrint *buffer)
{
BufferWriterContext *ctx;
int ret;
ret = avtextwriter_context_open(pwctx, &avtextwriter_buffer);
if (ret < 0)
return ret;
ctx = (*pwctx)->priv;
ctx->buffer = buffer;
return ret;
}
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