3 * Copyright (c) 2012 Paul B Mahol
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
22 #include "libavutil/intreadwrite.h"
23 #include "libavutil/dict.h"
26 #define AUPR_HDR 0x415550522D484452
27 #define AUPRINFO 0x41555052494E464F
28 #define BITSHVTB 0x4249545348565442
29 #define BLACKOUT 0x424C41434B4F5554
30 #define BRANCHPT 0x4252414E43485054
31 #define BUILDVER 0x4255494C44564552
32 #define CORESSMD 0x434F524553534D44
33 #define DTSHDHDR 0x4454534844484452
34 #define EXTSS_MD 0x45585453535f4d44
35 #define FILEINFO 0x46494C45494E464F
36 #define NAVI_TBL 0x4E4156492D54424C
37 #define STRMDATA 0x5354524D44415441
38 #define TIMECODE 0x54494D45434F4445
40 typedef struct DTSHDDemuxContext
{
44 static int dtshd_probe(AVProbeData
*p
)
46 if (AV_RB64(p
->buf
) == DTSHDHDR
)
47 return AVPROBE_SCORE_MAX
;
51 static int dtshd_read_header(AVFormatContext
*s
)
53 DTSHDDemuxContext
*dtshd
= s
->priv_data
;
54 AVIOContext
*pb
= s
->pb
;
55 uint64_t chunk_type
, chunk_size
;
60 st
= avformat_new_stream(s
, NULL
);
62 return AVERROR(ENOMEM
);
63 st
->codec
->codec_type
= AVMEDIA_TYPE_AUDIO
;
64 st
->codec
->codec_id
= AV_CODEC_ID_DTS
;
65 st
->need_parsing
= AVSTREAM_PARSE_FULL_RAW
;
67 while (!avio_feof(pb
)) {
68 chunk_type
= avio_rb64(pb
);
69 chunk_size
= avio_rb64(pb
);
72 av_log(s
, AV_LOG_ERROR
, "chunk size too small\n");
73 return AVERROR_INVALIDDATA
;
75 if (chunk_size
> ((uint64_t)1 << 61)) {
76 av_log(s
, AV_LOG_ERROR
, "chunk size too big\n");
77 return AVERROR_INVALIDDATA
;
82 dtshd
->data_end
= chunk_size
+ avio_tell(pb
);
83 if (dtshd
->data_end
<= chunk_size
)
84 return AVERROR_INVALIDDATA
;
88 if (chunk_size
> INT_MAX
)
90 value
= av_malloc(chunk_size
);
93 avio_read(pb
, value
, chunk_size
);
94 value
[chunk_size
- 1] = 0;
95 av_dict_set(&s
->metadata
, "fileinfo", value
,
96 AV_DICT_DONT_STRDUP_VAL
);
100 ret
= avio_skip(pb
, chunk_size
);
109 static int raw_read_packet(AVFormatContext
*s
, AVPacket
*pkt
)
111 DTSHDDemuxContext
*dtshd
= s
->priv_data
;
115 left
= dtshd
->data_end
- avio_tell(s
->pb
);
116 size
= FFMIN(left
, 1024);
120 ret
= av_get_packet(s
->pb
, pkt
, size
);
124 pkt
->stream_index
= 0;
129 AVInputFormat ff_dtshd_demuxer
= {
131 .long_name
= NULL_IF_CONFIG_SMALL("raw DTS-HD"),
132 .priv_data_size
= sizeof(DTSHDDemuxContext
),
133 .read_probe
= dtshd_probe
,
134 .read_header
= dtshd_read_header
,
135 .read_packet
= raw_read_packet
,
136 .flags
= AVFMT_GENERIC_INDEX
,
137 .extensions
= "dtshd",
138 .raw_codec_id
= AV_CODEC_ID_DTS
,