/src/ffmpeg/libavformat/ipudec.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * IPU video demuxer |
3 | | * Copyright (c) 2020 Paul B Mahol |
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 | | #include "avformat.h" |
23 | | #include "demux.h" |
24 | | #include "internal.h" |
25 | | #include "avio_internal.h" |
26 | | #include "rawdec.h" |
27 | | |
28 | | #include "libavutil/intreadwrite.h" |
29 | | |
30 | | static int ipu_read_probe(const AVProbeData *p) |
31 | 358k | { |
32 | 358k | if (AV_RB32(p->buf) != MKBETAG('i', 'p', 'u', 'm')) |
33 | 358k | return 0; |
34 | | |
35 | 498 | if (AV_RL32(p->buf + 4) == 0) |
36 | 70 | return 0; |
37 | | |
38 | 428 | if (AV_RL16(p->buf + 8) == 0) |
39 | 135 | return 0; |
40 | | |
41 | 293 | if (AV_RL16(p->buf + 10) == 0) |
42 | 93 | return 0; |
43 | | |
44 | 200 | if (AV_RL32(p->buf + 12) == 0) |
45 | 99 | return 0; |
46 | | |
47 | 101 | return AVPROBE_SCORE_MAX; |
48 | 200 | } |
49 | | |
50 | | static int ipu_read_header(AVFormatContext *s) |
51 | 5.22k | { |
52 | 5.22k | AVIOContext *pb = s->pb; |
53 | 5.22k | AVStream *st = avformat_new_stream(s, NULL); |
54 | | |
55 | 5.22k | if (!st) |
56 | 0 | return AVERROR(ENOMEM); |
57 | 5.22k | avio_skip(pb, 8); |
58 | 5.22k | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; |
59 | 5.22k | st->codecpar->codec_id = AV_CODEC_ID_IPU; |
60 | 5.22k | st->codecpar->width = avio_rl16(pb); |
61 | 5.22k | st->codecpar->height = avio_rl16(pb); |
62 | 5.22k | st->start_time = 0; |
63 | 5.22k | st->duration = |
64 | 5.22k | st->nb_frames = avio_rl32(pb); |
65 | 5.22k | ffstream(st)->need_parsing = AVSTREAM_PARSE_FULL_RAW; |
66 | 5.22k | avpriv_set_pts_info(st, 64, 1, 25); |
67 | | |
68 | 5.22k | return 0; |
69 | 5.22k | } |
70 | | |
71 | | const FFInputFormat ff_ipu_demuxer = { |
72 | | .p.name = "ipu", |
73 | | .p.long_name = NULL_IF_CONFIG_SMALL("raw IPU Video"), |
74 | | .p.extensions = "ipu", |
75 | | .p.flags = AVFMT_GENERIC_INDEX, |
76 | | .p.priv_class = &ff_raw_demuxer_class, |
77 | | .read_probe = ipu_read_probe, |
78 | | .read_header = ipu_read_header, |
79 | | .read_packet = ff_raw_read_partial_packet, |
80 | | .raw_codec_id = AV_CODEC_ID_IPU, |
81 | | .priv_data_size = sizeof(FFRawDemuxerContext), |
82 | | }; |