/***************************************************************************copyright            : (C) 2005 by Andy Leadbetteremail                : andrew.leadbetter@gmail.com ***************************************************************************//*************************************************************************** *   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 "mp4tag.h"#include <tag.h>#include <stdint.h>using namespace TagLib;MP4::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_composer = String::null;    m_year = 0;    m_track = 0;    m_disk = 0;    m_bpm = 0;    m_compilation = Undefined;}MP4::Tag::~Tag() {}bool MP4::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_composer == String::null &&        m_year == 0 &&        m_track == 0 &&        m_disk == 0 &&        m_bpm == 0 &&        m_compilation == Undefined &&        m_image.size() == 0;}void MP4::Tag::duplicate(const Tag *source, Tag *target, bool overwrite) {    // Duplicate standard information    Tag::duplicate(source, target, overwrite);    if (overwrite || target->compilation() == Undefined && source->compilation() != Undefined)        target->setCompilation(source->compilation());    if (overwrite || target->cover().size() == 0)        target->setCover(source->cover());}void MP4::Tag::readTags( MP4FileHandle mp4file ){    // Now parse tag.    char *value;    uint8_t boolvalue;    uint16_t numvalue, numvalue2;    uint8_t *image;    uint32_t imageSize;    if (MP4GetMetadataName(mp4file, &value) && value != NULL) {        m_title = String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataArtist(mp4file, &value) && value != NULL) {        m_artist = String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataComment(mp4file, &value) && value != NULL) {        m_comment = String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataYear(mp4file, &value) && value != NULL) {        m_year = strtol(value, NULL,0);        free(value);    }    if (MP4GetMetadataAlbum(mp4file, &value) && value != NULL) {        m_album  =  String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataTrack(mp4file, &numvalue, &numvalue2)) {        m_track = numvalue;    }    if (MP4GetMetadataDisk(mp4file, &numvalue, &numvalue2)) {        m_disk = numvalue;    }    if (MP4GetMetadataTempo(mp4file, &numvalue)) {        m_bpm = numvalue;    }    if (MP4GetMetadataCompilation(mp4file, &boolvalue)) {        m_compilation = boolvalue;    }    if (MP4GetMetadataGenre(mp4file, &value) && value != NULL) {        m_genre = String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataWriter(mp4file, &value) && value != NULL) {        m_composer = String(value, String::UTF8);        free(value);    }    if (MP4GetMetadataCoverArt(mp4file, &image, &imageSize) && image && imageSize) {        m_image.setData(reinterpret_cast<const char *>( image ), imageSize);        free(image);    }}