| /* |
| * Metadata muxer |
| * Copyright (c) 2010 Anton Khirnov |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <inttypes.h> |
| |
| #include "avformat.h" |
| #include "ffmeta.h" |
| #include "libavutil/dict.h" |
| |
| |
| static void write_escape_str(AVIOContext *s, const uint8_t *str) |
| { |
| const uint8_t *p = str; |
| |
| while (*p) { |
| if (*p == '#' || *p == ';' || *p == '=' || *p == '\\' || *p == '\n') |
| avio_w8(s, '\\'); |
| avio_w8(s, *p); |
| p++; |
| } |
| } |
| |
| static void write_tags(AVIOContext *s, AVDictionary *m) |
| { |
| AVDictionaryEntry *t = NULL; |
| while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) { |
| write_escape_str(s, t->key); |
| avio_w8(s, '='); |
| write_escape_str(s, t->value); |
| avio_w8(s, '\n'); |
| } |
| } |
| |
| static int write_header(AVFormatContext *s) |
| { |
| avio_write(s->pb, ID_STRING, sizeof(ID_STRING) - 1); |
| avio_w8(s->pb, '1'); // version |
| avio_w8(s->pb, '\n'); |
| return 0; |
| } |
| |
| static int write_trailer(AVFormatContext *s) |
| { |
| int i; |
| |
| write_tags(s->pb, s->metadata); |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| avio_write(s->pb, ID_STREAM, sizeof(ID_STREAM) - 1); |
| avio_w8(s->pb, '\n'); |
| write_tags(s->pb, s->streams[i]->metadata); |
| } |
| |
| for (i = 0; i < s->nb_chapters; i++) { |
| AVChapter *ch = s->chapters[i]; |
| avio_write(s->pb, ID_CHAPTER, sizeof(ID_CHAPTER) - 1); |
| avio_w8(s->pb, '\n'); |
| avio_printf(s->pb, "TIMEBASE=%d/%d\n", ch->time_base.num, ch->time_base.den); |
| avio_printf(s->pb, "START=%"PRId64"\n", ch->start); |
| avio_printf(s->pb, "END=%"PRId64"\n", ch->end); |
| write_tags(s->pb, ch->metadata); |
| } |
| |
| return 0; |
| } |
| |
| static int write_packet(AVFormatContext *s, AVPacket *pkt) |
| { |
| return 0; |
| } |
| |
| AVOutputFormat ff_ffmetadata_muxer = { |
| .name = "ffmetadata", |
| .long_name = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"), |
| .extensions = "ffmeta", |
| .write_header = write_header, |
| .write_packet = write_packet, |
| .write_trailer = write_trailer, |
| .flags = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS, |
| }; |