| /* |
| * 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, |
| }; |