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76 lines
2.1 KiB
76 lines
2.1 KiB
/* |
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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 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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/** |
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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 "bsf.h" |
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#include "bsf_internal.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 FFBitStreamFilter ff_imx_dump_header_bsf = { |
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.p.name = "imxdump", |
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.p.codec_ids = codec_ids, |
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.filter = imx_dump_header, |
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};
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