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cee7b8a051
Also change writer_printf signature in AVTextWriter to use va_list, so that it can be called by the new function writer_printf() in tf_internal.h. Reviewed-by: Stefano Sabatini <stefasab@gmail.com> Signed-off-by: softworkz <softworkz@hotmail.com>
90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/*
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* Copyright (c) The FFmpeg developers
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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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#include <limits.h>
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#include <stdarg.h>
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#include "avtextwriters.h"
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#include "libavutil/opt.h"
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#include "libavutil/bprint.h"
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/* Buffer Writer */
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# define WRITER_NAME "bufferwriter"
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typedef struct BufferWriterContext {
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const AVClass *class;
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AVBPrint *buffer;
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} BufferWriterContext;
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static const char *bufferwriter_get_name(void *ctx)
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{
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return WRITER_NAME;
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}
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static const AVClass bufferwriter_class = {
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.class_name = WRITER_NAME,
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.item_name = bufferwriter_get_name,
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};
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static void buffer_w8(AVTextWriterContext *wctx, int b)
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{
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BufferWriterContext *ctx = wctx->priv;
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av_bprintf(ctx->buffer, "%c", b);
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}
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static void buffer_put_str(AVTextWriterContext *wctx, const char *str)
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{
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BufferWriterContext *ctx = wctx->priv;
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av_bprintf(ctx->buffer, "%s", str);
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}
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static void buffer_vprintf(AVTextWriterContext *wctx, const char *fmt, va_list vl)
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{
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BufferWriterContext *ctx = wctx->priv;
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av_vbprintf(ctx->buffer, fmt, vl);
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}
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const AVTextWriter avtextwriter_buffer = {
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.name = WRITER_NAME,
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.priv_size = sizeof(BufferWriterContext),
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.priv_class = &bufferwriter_class,
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.writer_put_str = buffer_put_str,
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.writer_vprintf = buffer_vprintf,
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.writer_w8 = buffer_w8
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};
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int avtextwriter_create_buffer(AVTextWriterContext **pwctx, AVBPrint *buffer)
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{
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BufferWriterContext *ctx;
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int ret;
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ret = avtextwriter_context_open(pwctx, &avtextwriter_buffer);
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if (ret < 0)
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return ret;
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ctx = (*pwctx)->priv;
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ctx->buffer = buffer;
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return ret;
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}
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