Amarok – versatile and easy to use audio player
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amarok/amarok/src/metadata/mp4/mp4file.cpp

200 lines
5.5 KiB

/***************************************************************************
copyright : (C) 2005 by Andy Leadbetter
email : andrew.leadbetter@gmail.com
copyright : (C) 2005 by Martin Aumueller
email : aumuell@reserv.at
(write support)
***************************************************************************/
/***************************************************************************
* 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 "mp4file.h"
#include "mp4tag.h"
#include <tfile.h>
#include <audioproperties.h>
#include <stdint.h>
#include <cstdlib>
#include <stdlib.h>
#include <sys/types.h>
#define MP4V2_HAS_WRITE_BUG 1
namespace TagLib {
////////////////////////////////////////////////////////////////////////////////
// public members
////////////////////////////////////////////////////////////////////////////////
MP4::File::File(const char *file,
bool readProperties,
Properties::ReadStyle propertiesStyle,
MP4FileHandle handle) : TagLib::File(file),
mp4tag(NULL), properties(NULL)
{
// debug ("MP4::File: create new file object.");
//debug ( file );
/**
* Create the MP4 file.
*/
if(handle == MP4_INVALID_FILE_HANDLE)
{
mp4file = MP4Read(file);
}
else
{
mp4file = handle;
}
if( isOpen() )
{
read(readProperties, propertiesStyle );
}
}
MP4::File::~File()
{
MP4Close(mp4file);
delete mp4tag;
delete properties;
}
TagLib::Tag *MP4::File::tag() const
{
return mp4tag;
}
TagLib::MP4::Tag *MP4::File::getMP4Tag() const
{
return mp4tag;
}
MP4::Properties *MP4::File::audioProperties() const
{
return properties;
}
bool MP4::File::save()
{
MP4Close(mp4file);
MP4FileHandle handle = MP4Modify(name());
if(handle == MP4_INVALID_FILE_HANDLE)
{
mp4file = MP4Read(name());
return false;
}
#ifdef MP4V2_HAS_WRITE_BUG
/* according to gtkpod we have to delete all meta data before modifying it,
save the stuff we would not touch */
// need to fetch/rewrite this only if we aren't going to anyway
uint8_t compilation = 0;
bool has_compilation = mp4tag->compilation() == MP4::Tag::Undefined ? MP4GetMetadataCompilation(handle, &compilation) : false;
char *tool = NULL;
MP4GetMetadataTool(handle, &tool);
MP4MetadataDelete(handle);
#endif
#define setmeta(val, tag) \
if(mp4tag->val().isNull()) { \
/*MP4DeleteMetadata##tag(handle);*/ \
MP4SetMetadata##tag(handle, ""); \
} else { \
MP4SetMetadata##tag(handle, mp4tag->val().toCString(true)); \
}
setmeta(title, Name);
setmeta(artist, Artist);
setmeta(album, Album);
setmeta(comment, Comment);
setmeta(genre, Genre);
char buf[100] = "";
if(mp4tag->year())
snprintf(buf, sizeof(buf), "%u", mp4tag->year());
MP4SetMetadataYear(handle, buf);
u_int16_t t1, t2;
MP4GetMetadataTrack(handle, &t1, &t2);
MP4SetMetadataTrack(handle, mp4tag->track(), t2);
if(mp4tag->bpm() != 0)
MP4SetMetadataTempo(handle, mp4tag->bpm());
if(mp4tag->compilation() != MP4::Tag::Undefined) {
MP4SetMetadataCompilation(handle, mp4tag->compilation());
}
MP4SetMetadataCoverArt(handle, mp4tag->cover().size() ? const_cast<u_int8_t *>( reinterpret_cast<const u_int8_t *>( mp4tag->cover().data() ) ) : 0, mp4tag->cover().size());
#ifdef MP4V2_HAS_WRITE_BUG
// set the saved data again
if(has_compilation)
MP4SetMetadataCompilation(handle, compilation);
if(tool)
{
MP4SetMetadataTool(handle, tool);
free(tool);
}
#endif
MP4Close(handle);
mp4file = MP4Read(name());
if(mp4file == MP4_INVALID_FILE_HANDLE)
{
fprintf(stderr, "reopen failed\n");
return false;
}
return true;
}
bool MP4::File::isOpen()
{
return mp4file != MP4_INVALID_FILE_HANDLE;
}
////////////////////////////////////////////////////////////////////////////////
// private members
////////////////////////////////////////////////////////////////////////////////
void MP4::File::read(bool readProperties, Properties::ReadStyle propertiesStyle)
{
properties = new MP4::Properties(propertiesStyle);
mp4tag = new MP4::Tag();
if (mp4file != MP4_INVALID_FILE_HANDLE) {
if(readProperties)
{
// Parse bitrate etc.
properties->readMP4Properties( mp4file );
}
mp4tag->readTags( mp4file );
}
}
}