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/***************************************************************************
copyright : (C) 2005 by Martin Aumueller
email : aumuell@reserv.at
copyright : (C) 2005 by Andy Leadbetter
email : andrew.leadbetter@gmail.com
(original mp4 implementation)
***************************************************************************/
/***************************************************************************
* This library is free software; you can redistribute it and/or modify *
* it under the terms of the GNU Lesser General Public License version *
* 2.1 as published by the Free Software Foundation. *
* *
* This library 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 this library; if not, write to the Free Software *
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, *
* MA 02110-1301 USA *
***************************************************************************/
#include <stdio.h>
#include "audibletag.h"
#include <taglib/tag.h>
#include <netinet/in.h> // ntohl
#include <stdlib.h>
#include <string.h>
using namespace TagLib;
Audible::Tag::Tag() : TagLib::Tag::Tag() {
m_title = String::null;
m_artist = String::null;
m_album = String::null;
m_comment = String::null;
m_genre = String::null;
m_year = 0;
m_track = 0;
m_userID = 0;
m_tagsEndOffset = -1;
}
Audible::Tag::~Tag() {
}
bool Audible::Tag::isEmpty() const {
return m_title == String::null &&
m_artist == String::null &&
m_album == String::null &&
m_comment == String::null &&
m_genre == String::null &&
m_year == 0 &&
m_track == 0 &&
m_userID == 0;
}
void Audible::Tag::duplicate(const Tag *source, Tag *target, bool overwrite) {
// No nonstandard information stored yet
Tag::duplicate(source, target, overwrite);
}
#define OFF_PRODUCT_ID 197
#define OFF_TAGS 189
void Audible::Tag::readTags( FILE *fp )
{
char buf[1023];
fseek(fp, OFF_PRODUCT_ID, SEEK_SET);
fread(buf, strlen("product_id"), 1, fp);
if(memcmp(buf, "product_id", strlen("product_id")))
{
buf[20]='\0';
fprintf(stderr, "no valid Audible aa file: %s\n", buf);
return;
}
// Now parse tag.
fseek(fp, OFF_TAGS, SEEK_SET);
char *name, *value;
m_tagsEndOffset = OFF_TAGS;
bool lasttag = false;
while(!lasttag)
{
lasttag = !readTag(fp, &name, &value);
if(!strcmp(name, "title"))
{
m_title = String(value, String::Latin1);
}
else if(!strcmp(name, "author"))
{
m_artist = String(value, String::Latin1);
}
else if(!strcmp(name, "long_description"))
{
m_comment = String(value, String::Latin1);
}
else if(!strcmp(name, "description"))
{
if( m_comment.isNull() )
m_comment = String(value, String::Latin1);
}
else if(!strcmp(name, "pubdate"))
{
m_year = 0;
char *p = strrchr(value, '-');
if(p)
m_year = strtol(p+1, NULL, 10);
}
else if(!strcmp(name, "user_id"))
{
m_userID = strtol(value, NULL, 10);
}
delete[] name;
delete[] value;
}
m_album = String("", String::Latin1);
m_track = 0;
m_genre = String("Audiobook", String::Latin1);
}
bool Audible::Tag::readTag( FILE *fp, char **name, char **value)
{
uint32_t nlen;
fread(&nlen, sizeof(nlen), 1, fp);
nlen = ntohl(nlen);
//fprintf(stderr, "tagname len=%x\n", (unsigned)nlen);
*name = new char[nlen+1];
(*name)[nlen] = '\0';
uint32_t vlen;
fread(&vlen, sizeof(vlen), 1, fp);
vlen = ntohl(vlen);
//fprintf(stderr, "tag len=%x\n", (unsigned)vlen);
*value = new char[vlen+1];
(*value)[vlen] = '\0';
fread(*name, nlen, 1, fp);
fread(*value, vlen, 1, fp);
char lasttag;
fread(&lasttag, 1, 1, fp);
//fprintf(stderr, "%s: \"%s\"\n", *name, *value);
m_tagsEndOffset += 2 * 4 + nlen + vlen + 1;
return !lasttag;
}
int Audible::Tag::getTagsEndOffset()
{
return m_tagsEndOffset;
}
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