mirror of
https://github.com/FFmpeg/FFmpeg.git
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77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
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* imx dump header bitstream filter
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* Copyright (c) 2007 Baptiste Coudurier
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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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/**
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* @file
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* imx dump header bitstream filter
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* modifies bitstream to fit in mov and be decoded by final cut pro decoder
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*/
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#include "avcodec.h"
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#include "bsf.h"
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#include "bytestream.h"
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static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
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{
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/* MXF essence element key */
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static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
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AVPacket *in;
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int ret = 0;
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uint8_t *out_buf;
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ret = ff_bsf_get_packet(ctx, &in);
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if (ret < 0)
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return ret;
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ret = av_new_packet(out, in->size + 20);
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if (ret < 0)
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goto fail;
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out_buf = out->data;
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bytestream_put_buffer(&out_buf, imx_header, 16);
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bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
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bytestream_put_be24(&out_buf, in->size);
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bytestream_put_buffer(&out_buf, in->data, in->size);
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ret = av_packet_copy_props(out, in);
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if (ret < 0)
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goto fail;
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fail:
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if (ret < 0)
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av_packet_unref(out);
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av_packet_free(&in);
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return ret;
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}
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static const enum AVCodecID codec_ids[] = {
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AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
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};
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const AVBitStreamFilter ff_imx_dump_header_bsf = {
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.name = "imxdump",
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.filter = imx_dump_header,
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.codec_ids = codec_ids,
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};
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