119 lines
3 KiB
C
119 lines
3 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include "system.h"
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#include "id3.h"
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#include "metadata_common.h"
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#include "metadata_parsers.h"
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#include "structec.h"
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#include "logf.h"
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/* Read the items in a Vorbis comment packet. Returns true the items were
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* fully read, false otherwise.
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*/
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bool read_vorbis_tags(int fd, struct mp3entry *id3,
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long tag_remaining)
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{
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char *buf = id3->id3v2buf;
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int32_t comment_count;
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int32_t len;
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int buf_remaining = sizeof(id3->id3v2buf) + sizeof(id3->id3v1buf);
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int i;
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if (ecread(fd, &len, 1, "l", IS_BIG_ENDIAN) < (long) sizeof(len))
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{
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return false;
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}
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if ((lseek(fd, len, SEEK_CUR) < 0)
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|| (ecread(fd, &comment_count, 1, "l", IS_BIG_ENDIAN)
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< (long) sizeof(comment_count)))
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{
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return false;
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}
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tag_remaining -= len + sizeof(len) + sizeof(comment_count);
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if (tag_remaining <= 0)
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{
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return true;
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}
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for (i = 0; i < comment_count; i++)
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{
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char name[TAG_NAME_LENGTH];
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char value[TAG_VALUE_LENGTH];
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int32_t read_len;
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if (tag_remaining < 4)
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{
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break;
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}
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if (ecread(fd, &len, 1, "l", IS_BIG_ENDIAN) < (long) sizeof(len))
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{
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return false;
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}
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tag_remaining -= 4;
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/* Quit if we've passed the end of the page */
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if (tag_remaining < len)
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{
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break;
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}
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tag_remaining -= len;
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read_len = read_string(fd, name, sizeof(name), '=', len);
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if (read_len < 0)
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{
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return false;
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}
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len -= read_len;
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if (read_string(fd, value, sizeof(value), -1, len) < 0)
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{
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return false;
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}
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len = parse_tag(name, value, id3, buf, buf_remaining,
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TAGTYPE_VORBIS);
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buf += len;
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buf_remaining -= len;
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}
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/* Skip to the end of the block */
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if (tag_remaining)
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{
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if (lseek(fd, tag_remaining, SEEK_CUR) < 0)
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{
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return false;
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}
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}
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return true;
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}
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