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75 lines
2.5 KiB
75 lines
2.5 KiB
/* |
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* VorbisComment writer |
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* Copyright (c) 2009 James Darnley |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avformat.h" |
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#include "metadata.h" |
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#include "vorbiscomment.h" |
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#include "libavcodec/bytestream.h" |
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#include "libavutil/dict.h" |
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/** |
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* VorbisComment metadata conversion mapping. |
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* from Ogg Vorbis I format specification: comment field and header specification |
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* http://xiph.org/vorbis/doc/v-comment.html |
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*/ |
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const AVMetadataConv ff_vorbiscomment_metadata_conv[] = { |
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{ "ALBUMARTIST", "album_artist"}, |
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{ "TRACKNUMBER", "track" }, |
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{ "DISCNUMBER", "disc" }, |
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{ 0 } |
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}; |
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int ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string, |
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unsigned *count) |
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{ |
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int len = 8; |
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len += strlen(vendor_string); |
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*count = 0; |
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if (m) { |
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AVDictionaryEntry *tag = NULL; |
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while ((tag = av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
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len += 4 +strlen(tag->key) + 1 + strlen(tag->value); |
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(*count)++; |
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} |
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} |
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return len; |
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} |
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int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m, |
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const char *vendor_string, const unsigned count) |
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{ |
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bytestream_put_le32(p, strlen(vendor_string)); |
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bytestream_put_buffer(p, vendor_string, strlen(vendor_string)); |
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if (*m) { |
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AVDictionaryEntry *tag = NULL; |
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bytestream_put_le32(p, count); |
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while ((tag = av_dict_get(*m, "", tag, AV_DICT_IGNORE_SUFFIX))) { |
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unsigned int len1 = strlen(tag->key); |
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unsigned int len2 = strlen(tag->value); |
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bytestream_put_le32(p, len1+1+len2); |
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bytestream_put_buffer(p, tag->key, len1); |
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bytestream_put_byte(p, '='); |
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bytestream_put_buffer(p, tag->value, len2); |
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} |
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} else |
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bytestream_put_le32(p, 0); |
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return 0; |
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}
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