2
* imx dump header bitstream filter
3
* Copyright (c) 2007 Baptiste Coudurier.
5
* This file is part of FFmpeg.
7
* FFmpeg is free software; you can redistribute it and/or
8
* modify it under the terms of the GNU Lesser General Public
9
* License as published by the Free Software Foundation; either
10
* version 2.1 of the License, or (at your option) any later version.
12
* FFmpeg is distributed in the hope that it will be useful,
13
* but WITHOUT ANY WARRANTY; without even the implied warranty of
14
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15
* Lesser General Public License for more details.
17
* You should have received a copy of the GNU Lesser General Public
18
* License along with FFmpeg; if not, write to the Free Software
19
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23
* @file imx_dump_header_bsf.c
24
* imx dump header bitstream filter
25
* modifies bitstream to fit in mov and be decoded by final cut pro decoder
29
#include "bytestream.h"
32
static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
33
uint8_t **poutbuf, int *poutbuf_size,
34
const uint8_t *buf, int buf_size, int keyframe)
36
/* MXF essence element key */
37
static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
40
if (avctx->codec_id != CODEC_ID_MPEG2VIDEO) {
41
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n");
45
*poutbuf = av_malloc(buf_size + 20 + FF_INPUT_BUFFER_PADDING_SIZE);
47
bytestream_put_buffer(&poutbufp, imx_header, 16);
48
bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */
49
bytestream_put_be24(&poutbufp, buf_size);
50
bytestream_put_buffer(&poutbufp, buf, buf_size);
51
*poutbuf_size = poutbufp - *poutbuf;
55
AVBitStreamFilter imx_dump_header_bsf = {