| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * This file is part of FFmpeg. | ||
| 3 | * | ||
| 4 | * FFmpeg is free software; you can redistribute it and/or | ||
| 5 | * modify it under the terms of the GNU Lesser General Public | ||
| 6 | * License as published by the Free Software Foundation; either | ||
| 7 | * version 2.1 of the License, or (at your option) any later version. | ||
| 8 | * | ||
| 9 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 12 | * Lesser General Public License for more details. | ||
| 13 | * | ||
| 14 | * You should have received a copy of the GNU Lesser General Public | ||
| 15 | * License along with FFmpeg; if not, write to the Free Software | ||
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 17 | */ | ||
| 18 | |||
| 19 | /** | ||
| 20 | * Reads ID3v2 tags from an MP3 file and prints the raw tag names | ||
| 21 | * without applying FFmpeg's internal metadata key conversion. | ||
| 22 | */ | ||
| 23 | |||
| 24 | #include <stdarg.h> | ||
| 25 | #include <stdio.h> | ||
| 26 | |||
| 27 | #include "libavutil/dict.h" | ||
| 28 | #include "libavutil/log.h" | ||
| 29 | #include "libavformat/avformat.h" | ||
| 30 | #include "libavformat/id3v2.h" | ||
| 31 | |||
| 32 | 101 | static void log_to_stdout(void *avcl, int level, const char *fmt, va_list vl) | |
| 33 | { | ||
| 34 |
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101 | if (level <= av_log_get_level()) |
| 35 | 41 | vprintf(fmt, vl); | |
| 36 | 101 | } | |
| 37 | |||
| 38 | 20 | int main(int argc, char *argv[]) | |
| 39 | { | ||
| 40 | AVFormatContext *s; | ||
| 41 | 20 | ID3v2ExtraMeta *extra_meta = NULL; | |
| 42 | 20 | const AVDictionaryEntry *tag = NULL; | |
| 43 | int ret; | ||
| 44 | |||
| 45 | 20 | av_log_set_callback(log_to_stdout); | |
| 46 | |||
| 47 |
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20 | if (argc < 2) { |
| 48 | ✗ | fprintf(stderr, "Usage: %s <file>\n", argv[0]); | |
| 49 | ✗ | return 1; | |
| 50 | } | ||
| 51 | |||
| 52 | 20 | s = avformat_alloc_context(); | |
| 53 |
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20 | if (!s) |
| 54 | ✗ | return 1; | |
| 55 | |||
| 56 | 20 | s->debug |= AV_FDEBUG_ID3V2; | |
| 57 | |||
| 58 | 20 | ret = avio_open(&s->pb, argv[1], AVIO_FLAG_READ); | |
| 59 |
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20 | if (ret < 0) { |
| 60 | ✗ | fprintf(stderr, "Failed to open '%s'\n", argv[1]); | |
| 61 | ✗ | avformat_free_context(s); | |
| 62 | ✗ | return 1; | |
| 63 | } | ||
| 64 | |||
| 65 | 20 | ff_id3v2_read(s, ID3v2_DEFAULT_MAGIC, &extra_meta, 0); | |
| 66 | |||
| 67 |
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61 | while ((tag = av_dict_iterate(s->metadata, tag))) |
| 68 | 41 | printf("%s=%s\n", tag->key, tag->value); | |
| 69 | |||
| 70 | 20 | ff_id3v2_free_extra_meta(&extra_meta); | |
| 71 | 20 | avio_closep(&s->pb); | |
| 72 | 20 | avformat_free_context(s); | |
| 73 | |||
| 74 | 20 | return 0; | |
| 75 | } | ||
| 76 |