FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/imx_dump_header_bsf.c
Date: 2021-09-22 23:55:11
Exec Total Coverage
Lines: 0 21 0.0%
Branches: 0 8 0.0%

Line Branch Exec Source
1 /*
2 * imx dump header bitstream filter
3 * Copyright (c) 2007 Baptiste Coudurier
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22 /**
23 * @file
24 * imx dump header bitstream filter
25 * modifies bitstream to fit in mov and be decoded by final cut pro decoder
26 */
27
28 #include "bsf.h"
29 #include "bsf_internal.h"
30 #include "bytestream.h"
31
32
33 static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
34 {
35 /* MXF essence element key */
36 static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
37
38 AVPacket *in;
39 int ret = 0;
40 uint8_t *out_buf;
41
42 ret = ff_bsf_get_packet(ctx, &in);
43 if (ret < 0)
44 return ret;
45
46 ret = av_new_packet(out, in->size + 20);
47 if (ret < 0)
48 goto fail;
49
50 out_buf = out->data;
51
52 bytestream_put_buffer(&out_buf, imx_header, 16);
53 bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
54 bytestream_put_be24(&out_buf, in->size);
55 bytestream_put_buffer(&out_buf, in->data, in->size);
56
57 ret = av_packet_copy_props(out, in);
58 if (ret < 0)
59 goto fail;
60
61 fail:
62 if (ret < 0)
63 av_packet_unref(out);
64 av_packet_free(&in);
65 return ret;
66 }
67
68 static const enum AVCodecID codec_ids[] = {
69 AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
70 };
71
72 const AVBitStreamFilter ff_imx_dump_header_bsf = {
73 .name = "imxdump",
74 .filter = imx_dump_header,
75 .codec_ids = codec_ids,
76 };
77