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,