mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
|
|
* 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 "bsf.h"
|
|
#include "bsf_internal.h"
|
|
#include "bytestream.h"
|
|
|
|
|
|
static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
|
|
{
|
|
/* 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 };
|
|
|
|
AVPacket *in;
|
|
int ret = 0;
|
|
uint8_t *out_buf;
|
|
|
|
ret = ff_bsf_get_packet(ctx, &in);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = av_new_packet(out, in->size + 20);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
out_buf = out->data;
|
|
|
|
bytestream_put_buffer(&out_buf, imx_header, 16);
|
|
bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
|
|
bytestream_put_be24(&out_buf, in->size);
|
|
bytestream_put_buffer(&out_buf, in->data, in->size);
|
|
|
|
ret = av_packet_copy_props(out, in);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
fail:
|
|
if (ret < 0)
|
|
av_packet_unref(out);
|
|
av_packet_free(&in);
|
|
return ret;
|
|
}
|
|
|
|
static const enum AVCodecID codec_ids[] = {
|
|
AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
|
|
};
|
|
|
|
const AVBitStreamFilter ff_imx_dump_header_bsf = {
|
|
.name = "imxdump",
|
|
.filter = imx_dump_header,
|
|
.codec_ids = codec_ids,
|
|
};
|