LCOV - code coverage report
Current view: top level - src/libavformat - ffmetaenc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 29 39 74.4 %
Date: 2017-03-25 17:02:41 Functions: 4 5 80.0 %

          Line data    Source code
       1             : /*
       2             :  * Metadata muxer
       3             :  * Copyright (c) 2010 Anton Khirnov
       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 <inttypes.h>
      23             : 
      24             : #include "avformat.h"
      25             : #include "ffmeta.h"
      26             : #include "libavutil/dict.h"
      27             : 
      28             : 
      29          58 : static void write_escape_str(AVIOContext *s, const uint8_t *str)
      30             : {
      31          58 :     const uint8_t *p = str;
      32             : 
      33         985 :     while (*p) {
      34         869 :         if (*p == '#' || *p == ';' || *p == '=' || *p == '\\' || *p == '\n')
      35           0 :             avio_w8(s, '\\');
      36         869 :         avio_w8(s, *p);
      37         869 :         p++;
      38             :     }
      39          58 : }
      40             : 
      41           9 : static void write_tags(AVIOContext *s, AVDictionary *m)
      42             : {
      43           9 :     AVDictionaryEntry *t = NULL;
      44          47 :     while ((t = av_dict_get(m, "", t, AV_DICT_IGNORE_SUFFIX))) {
      45          29 :         write_escape_str(s, t->key);
      46          29 :         avio_w8(s, '=');
      47          29 :         write_escape_str(s, t->value);
      48          29 :         avio_w8(s, '\n');
      49             :     }
      50           9 : }
      51             : 
      52           3 : static int write_header(AVFormatContext *s)
      53             : {
      54           3 :     avio_write(s->pb, ID_STRING, sizeof(ID_STRING) - 1);
      55           3 :     avio_w8(s->pb, '1');          // version
      56           3 :     avio_w8(s->pb, '\n');
      57           3 :     avio_flush(s->pb);
      58           3 :     return 0;
      59             : }
      60             : 
      61           3 : static int write_trailer(AVFormatContext *s)
      62             : {
      63             :     int i;
      64             : 
      65           3 :     write_tags(s->pb, s->metadata);
      66             : 
      67           9 :     for (i = 0; i < s->nb_streams; i++) {
      68           6 :         avio_write(s->pb, ID_STREAM, sizeof(ID_STREAM) - 1);
      69           6 :         avio_w8(s->pb, '\n');
      70           6 :         write_tags(s->pb, s->streams[i]->metadata);
      71             :     }
      72             : 
      73           3 :     for (i = 0; i < s->nb_chapters; i++) {
      74           0 :         AVChapter *ch = s->chapters[i];
      75           0 :         avio_write(s->pb, ID_CHAPTER, sizeof(ID_CHAPTER) - 1);
      76           0 :         avio_w8(s->pb, '\n');
      77           0 :         avio_printf(s->pb, "TIMEBASE=%d/%d\n", ch->time_base.num, ch->time_base.den);
      78           0 :         avio_printf(s->pb, "START=%"PRId64"\n", ch->start);
      79           0 :         avio_printf(s->pb, "END=%"PRId64"\n",   ch->end);
      80           0 :         write_tags(s->pb, ch->metadata);
      81             :     }
      82             : 
      83           3 :     return 0;
      84             : }
      85             : 
      86           0 : static int write_packet(AVFormatContext *s, AVPacket *pkt)
      87             : {
      88           0 :     return 0;
      89             : }
      90             : 
      91             : AVOutputFormat ff_ffmetadata_muxer = {
      92             :     .name          = "ffmetadata",
      93             :     .long_name     = NULL_IF_CONFIG_SMALL("FFmpeg metadata in text"),
      94             :     .extensions    = "ffmeta",
      95             :     .write_header  = write_header,
      96             :     .write_packet  = write_packet,
      97             :     .write_trailer = write_trailer,
      98             :     .flags         = AVFMT_NOTIMESTAMPS | AVFMT_NOSTREAMS,
      99             : };

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