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62 lines
2.0 KiB
C
62 lines
2.0 KiB
C
/*
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* Copyright (c) 2008 Reimar Döffinger
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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 "libavutil/common.h"
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#include "libavutil/intreadwrite.h"
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#include "avcodec.h"
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static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
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uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size, int keyframe){
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if (buf_size > 0xffff) return 0;
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*poutbuf_size = buf_size + 2;
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*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
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if (!*poutbuf)
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return AVERROR(ENOMEM);
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AV_WB16(*poutbuf, buf_size);
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memcpy(*poutbuf + 2, buf, buf_size);
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return 1;
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}
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AVBitStreamFilter ff_text2movsub_bsf={
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"text2movsub",
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0,
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text2movsub,
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};
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static int mov2textsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
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uint8_t **poutbuf, int *poutbuf_size,
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const uint8_t *buf, int buf_size, int keyframe){
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if (buf_size < 2) return 0;
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*poutbuf_size = FFMIN(buf_size - 2, AV_RB16(buf));
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*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
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if (!*poutbuf)
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return AVERROR(ENOMEM);
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memcpy(*poutbuf, buf + 2, *poutbuf_size);
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return 1;
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}
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AVBitStreamFilter ff_mov2textsub_bsf={
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"mov2textsub",
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0,
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mov2textsub,
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};
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