| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * MODS demuxer | ||
| 3 | * Copyright (c) 2015-2016 Florian Nouwt | ||
| 4 | * Copyright (c) 2017 Adib Surani | ||
| 5 | * Copyright (c) 2020 Paul B Mahol | ||
| 6 | * | ||
| 7 | * This file is part of FFmpeg. | ||
| 8 | * | ||
| 9 | * FFmpeg is free software; you can redistribute it and/or | ||
| 10 | * modify it under the terms of the GNU Lesser General Public | ||
| 11 | * License as published by the Free Software Foundation; either | ||
| 12 | * version 2.1 of the License, or (at your option) any later version. | ||
| 13 | * | ||
| 14 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 17 | * Lesser General Public License for more details. | ||
| 18 | * | ||
| 19 | * You should have received a copy of the GNU Lesser General Public | ||
| 20 | * License along with FFmpeg; if not, write to the Free Software | ||
| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include "libavutil/intreadwrite.h" | ||
| 25 | |||
| 26 | #include "avformat.h" | ||
| 27 | #include "demux.h" | ||
| 28 | #include "internal.h" | ||
| 29 | |||
| 30 | 7127 | static int mods_probe(const AVProbeData *p) | |
| 31 | { | ||
| 32 |
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7127 | if (memcmp(p->buf, "MODSN3\x0a\x00", 8)) |
| 33 | 7127 | return 0; | |
| 34 | ✗ | if (AV_RB32(p->buf + 8) == 0) | |
| 35 | ✗ | return 0; | |
| 36 | ✗ | if (AV_RB32(p->buf + 12) == 0) | |
| 37 | ✗ | return 0; | |
| 38 | ✗ | if (AV_RB32(p->buf + 16) == 0) | |
| 39 | ✗ | return 0; | |
| 40 | ✗ | return AVPROBE_SCORE_MAX; | |
| 41 | } | ||
| 42 | |||
| 43 | ✗ | static int mods_read_header(AVFormatContext *s) | |
| 44 | { | ||
| 45 | ✗ | AVIOContext *pb = s->pb; | |
| 46 | AVRational fps; | ||
| 47 | int64_t pos; | ||
| 48 | |||
| 49 | ✗ | AVStream *st = avformat_new_stream(s, NULL); | |
| 50 | ✗ | if (!st) | |
| 51 | ✗ | return AVERROR(ENOMEM); | |
| 52 | |||
| 53 | ✗ | avio_skip(pb, 8); | |
| 54 | |||
| 55 | ✗ | st->nb_frames = avio_rl32(pb); | |
| 56 | ✗ | st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO; | |
| 57 | ✗ | st->codecpar->codec_id = AV_CODEC_ID_MOBICLIP; | |
| 58 | ✗ | st->codecpar->width = avio_rl32(pb); | |
| 59 | ✗ | st->codecpar->height = avio_rl32(pb); | |
| 60 | |||
| 61 | ✗ | fps.num = avio_rl32(pb); | |
| 62 | ✗ | fps.den = 0x1000000; | |
| 63 | ✗ | avpriv_set_pts_info(st, 64, fps.den, fps.num); | |
| 64 | |||
| 65 | ✗ | avio_skip(pb, 16); | |
| 66 | |||
| 67 | ✗ | pos = avio_rl32(pb) + 4; | |
| 68 | ✗ | avio_seek(pb, pos, SEEK_SET); | |
| 69 | ✗ | pos = avio_rl32(pb); | |
| 70 | ✗ | avio_seek(pb, pos, SEEK_SET); | |
| 71 | |||
| 72 | ✗ | return 0; | |
| 73 | } | ||
| 74 | |||
| 75 | ✗ | static int mods_read_packet(AVFormatContext *s, AVPacket *pkt) | |
| 76 | { | ||
| 77 | ✗ | AVIOContext *pb = s->pb; | |
| 78 | unsigned size; | ||
| 79 | int64_t pos; | ||
| 80 | int ret; | ||
| 81 | |||
| 82 | ✗ | if (avio_feof(pb)) | |
| 83 | ✗ | return AVERROR_EOF; | |
| 84 | |||
| 85 | ✗ | pos = avio_tell(pb); | |
| 86 | ✗ | size = avio_rl32(pb) >> 14; | |
| 87 | ✗ | ret = av_get_packet(pb, pkt, size); | |
| 88 | ✗ | pkt->pos = pos; | |
| 89 | ✗ | pkt->stream_index = 0; | |
| 90 | ✗ | pkt->flags |= AV_PKT_FLAG_KEY; | |
| 91 | |||
| 92 | ✗ | return ret; | |
| 93 | } | ||
| 94 | |||
| 95 | const FFInputFormat ff_mods_demuxer = { | ||
| 96 | .p.name = "mods", | ||
| 97 | .p.long_name = NULL_IF_CONFIG_SMALL("MobiClip MODS"), | ||
| 98 | .p.extensions = "mods", | ||
| 99 | .p.flags = AVFMT_GENERIC_INDEX, | ||
| 100 | .read_probe = mods_probe, | ||
| 101 | .read_header = mods_read_header, | ||
| 102 | .read_packet = mods_read_packet, | ||
| 103 | }; | ||
| 104 |