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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | * Metadata muxer |
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| 3 | * Copyright (c) 2010 Anton Khirnov |
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| 4 | * |
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| 5 | * This file is part of FFmpeg. |
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| 6 | * |
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| 7 | * FFmpeg is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Lesser General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2.1 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * FFmpeg is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Lesser General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Lesser General Public |
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| 18 | * License along with FFmpeg; if not, write to the Free Software |
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| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 20 | */ |
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| 21 | |||
| 22 | #include |
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| 23 | |||
| 24 | #include "avformat.h" |
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| 25 | #include "ffmeta.h" |
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| 26 | #include "libavutil/dict.h" |
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| 27 | |||
| 28 | |||
| 29 | static void write_escape_str(AVIOContext *s, const uint8_t *str) |
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| 30 | { |
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| 31 | const uint8_t *p = str; |
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| 32 | |||
| 33 | while (*p) { |
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| 34 | if (*p == '#' || *p == ';' || *p == '=' || *p == '\\' || *p == '\n') |
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| 35 | avio_w8(s, '\\'); |
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| 36 | avio_w8(s, *p); |
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| 37 | p++; |
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| 38 | } |
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| 39 | } |
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| 40 | |||
| 41 | static void write_tags(AVIOContext *s, AVDictionary *m) |
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| 42 | { |
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| 43 | AVDictionaryEntry *t = NULL; |
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| 44 | while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) { |
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| 45 | write_escape_str(s, t->key); |
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| 46 | avio_w8(s, '='); |
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| 47 | write_escape_str(s, t->value); |
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| 48 | avio_w8(s, '\n'); |
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| 49 | } |
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| 50 | } |
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| 51 | |||
| 52 | static int write_header(AVFormatContext *s) |
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| 53 | { |
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| 54 | avio_write(s->pb, ID_STRING, sizeof(ID_STRING) - 1); |
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| 55 | avio_w8(s->pb, '1'); // version |
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| 56 | avio_w8(s->pb, '\n'); |
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| 57 | avio_flush(s->pb); |
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| 58 | return 0; |
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| 59 | } |
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| 60 | |||
| 61 | static int write_trailer(AVFormatContext *s) |
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| 62 | { |
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| 63 | int i; |
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| 64 | |||
| 65 | write_tags(s->pb, s->metadata); |
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| 66 | |||
| 67 | for (i = 0; i < s->nb_streams; i++) { |
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| 68 | avio_write(s->pb, ID_STREAM, sizeof(ID_STREAM) - 1); |
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| 69 | avio_w8(s->pb, '\n'); |
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| 70 | write_tags(s->pb, s->streams[i]->metadata); |
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| 71 | } |
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| 72 | |||
| 73 | for (i = 0; i < s->nb_chapters; i++) { |
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| 74 | AVChapter *ch = s->chapters[i]; |
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| 75 | avio_write(s->pb, ID_CHAPTER, sizeof(ID_CHAPTER) - 1); |
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| 76 | avio_w8(s->pb, '\n'); |
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| 77 | avio_printf(s->pb, "TIMEBASE=%d/%d\n", ch->time_base.num, ch->time_base.den); |
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| 78 | avio_printf(s->pb, "START=%"PRId64"\n", ch->start); |
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| 79 | avio_printf(s->pb, "END=%"PRId64"\n", ch->end); |
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| 80 | write_tags(s->pb, ch->metadata); |
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| 81 | } |
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| 82 | |||
| 83 | return 0; |
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| 84 | } |
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| 85 | |||
| 86 | static int write_packet(AVFormatContext *s, AVPacket *pkt) |
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| 87 | { |
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| 88 | return 0; |
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| 89 | } |
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| 90 | |||
| 91 | AVOutputFormat ff_ffmetadata_muxer = { |
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| 92 | .name = "ffmetadata", |
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| 93 | .long_name = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"), |
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| 94 | .extensions = "ffmeta", |
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| 95 | .write_header = write_header, |
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| 96 | .write_packet = write_packet, |
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| 97 | .write_trailer = write_trailer, |
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| 98 | .flags = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS, |
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| 99 | }; |