0,0 → 1,58 |
/* |
* imx dump header bitstream filter |
* Copyright (c) 2007 Baptiste Coudurier |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* imx dump header bitstream filter |
* modifies bitstream to fit in mov and be decoded by final cut pro decoder |
*/ |
|
#include "avcodec.h" |
#include "bytestream.h" |
|
|
static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, |
uint8_t **poutbuf, int *poutbuf_size, |
const uint8_t *buf, int buf_size, int keyframe) |
{ |
/* MXF essence element key */ |
static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 }; |
uint8_t *poutbufp; |
|
if (avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO) { |
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n"); |
return 0; |
} |
|
*poutbuf = av_malloc(buf_size + 20 + FF_INPUT_BUFFER_PADDING_SIZE); |
poutbufp = *poutbuf; |
bytestream_put_buffer(&poutbufp, imx_header, 16); |
bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */ |
bytestream_put_be24(&poutbufp, buf_size); |
bytestream_put_buffer(&poutbufp, buf, buf_size); |
*poutbuf_size = poutbufp - *poutbuf; |
return 1; |
} |
|
AVBitStreamFilter ff_imx_dump_header_bsf = { |
.name = "imxdump", |
.filter = imx_dump_header, |
}; |