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/***************************************************************************
copyright : (C) 2003 by Scott Wheeler
email : wheeler@kde.org
***************************************************************************/
/***************************************************************************
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
* USA *
***************************************************************************/
#ifndef TAGLIB_TAG_C
#define TAGLIB_TAG_C
/* Do not include this in the main TagLib documentation. */
#ifndef DO_NOT_DOCUMENT
#ifdef __cplusplus
extern "C" {
#endif
#if defined(TAGLIB_STATIC)
#define TAGLIB_C_EXPORT
#elif defined(_WIN32) || defined(_WIN64)
#ifdef MAKE_TAGLIB_C_LIB
#define TAGLIB_C_EXPORT __declspec(dllexport)
#else
#define TAGLIB_C_EXPORT __declspec(dllimport)
#endif
#elif defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__ >= 1)
#define TAGLIB_C_EXPORT __attribute__ ((visibility("default")))
#else
#define TAGLIB_C_EXPORT
#endif
#ifndef BOOL
#define BOOL int
#endif
/*******************************************************************************
* [ TagLib C Binding ]
*
* This is an interface to TagLib's "simple" API, meaning that you can read and
* modify media files in a generic, but not specialized way. This is a rough
* representation of TagLib::File and TagLib::Tag, for which the documentation
* is somewhat more complete and worth consulting.
*******************************************************************************/
/*
* These are used for type provide some type safety to the C API (as opposed to
* using void *, but pointers to them are simply cast to the corresponding C++
* types in the implementation.
*/
typedef struct { int dummy; } TagLib_File;
typedef struct { int dummy; } TagLib_Tag;
typedef struct { int dummy; } TagLib_AudioProperties;
/*!
* By default all strings coming into or out of TagLib's C API are in UTF8.
* However, it may be desirable for TagLib to operate on Latin1 (ISO-8859-1)
* strings in which case this should be set to FALSE.
*/
TAGLIB_C_EXPORT void taglib_set_strings_unicode(BOOL unicode);
/*!
* TagLib can keep track of strings that are created when outputting tag values
* and clear them using taglib_tag_clear_strings(). This is enabled by default.
* However if you wish to do more fine grained management of strings, you can do
* so by setting \a management to FALSE.
*/
TAGLIB_C_EXPORT void taglib_set_string_management_enabled(BOOL management);
/*!
* Explicitly free a string returned from TagLib
*/
TAGLIB_C_EXPORT void taglib_free(void* pointer);
/*******************************************************************************
* File API
******************************************************************************/
typedef enum {
TagLib_File_MPEG,
TagLib_File_OggVorbis,
TagLib_File_FLAC,
TagLib_File_MPC,
TagLib_File_OggFlac,
TagLib_File_WavPack,
TagLib_File_Speex,
TagLib_File_TrueAudio,
TagLib_File_MP4,
TagLib_File_ASF
} TagLib_File_Type;
/*!
* Creates a TagLib file based on \a filename. TagLib will try to guess the file
* type.
*
* \returns NULL if the file type cannot be determined or the file cannot
* be opened.
*/
TAGLIB_C_EXPORT TagLib_File *taglib_file_new(const char *filename);
/*!
* Creates a TagLib file based on \a filename. Rather than attempting to guess
* the type, it will use the one specified by \a type.
*/
TAGLIB_C_EXPORT TagLib_File *taglib_file_new_type(const char *filename, TagLib_File_Type type);
/*!
* Frees and closes the file.
*/
TAGLIB_C_EXPORT void taglib_file_free(TagLib_File *file);
/*!
* Returns true if the file is open and readble and valid information for
* the Tag and / or AudioProperties was found.
*/
TAGLIB_C_EXPORT BOOL taglib_file_is_valid(const TagLib_File *file);
/*!
* Returns a pointer to the tag associated with this file. This will be freed
* automatically when the file is freed.
*/
TAGLIB_C_EXPORT TagLib_Tag *taglib_file_tag(const TagLib_File *file);
/*!
* Returns a pointer to the the audio properties associated with this file. This
* will be freed automatically when the file is freed.
*/
TAGLIB_C_EXPORT const TagLib_AudioProperties *taglib_file_audioproperties(const TagLib_File *file);
/*!
* Saves the \a file to disk.
*/
TAGLIB_C_EXPORT BOOL taglib_file_save(TagLib_File *file);
/******************************************************************************
* Tag API
******************************************************************************/
/*!
* Returns a string with this tag's title.
*
* \note By default this string should be UTF8 encoded and its memory should be
* freed using taglib_tag_free_strings().
*/
TAGLIB_C_EXPORT char *taglib_tag_title(const TagLib_Tag *tag);
/*!
* Returns a string with this tag's artist.
*
* \note By default this string should be UTF8 encoded and its memory should be
* freed using taglib_tag_free_strings().
*/
TAGLIB_C_EXPORT char *taglib_tag_artist(const TagLib_Tag *tag);
/*!
* Returns a string with this tag's album name.
*
* \note By default this string should be UTF8 encoded and its memory should be
* freed using taglib_tag_free_strings().
*/
TAGLIB_C_EXPORT char *taglib_tag_album(const TagLib_Tag *tag);
/*!
* Returns a string with this tag's comment.
*
* \note By default this string should be UTF8 encoded and its memory should be
* freed using taglib_tag_free_strings().
*/
TAGLIB_C_EXPORT char *taglib_tag_comment(const TagLib_Tag *tag);
/*!
* Returns a string with this tag's genre.
*
* \note By default this string should be UTF8 encoded and its memory should be
* freed using taglib_tag_free_strings().
*/
TAGLIB_C_EXPORT char *taglib_tag_genre(const TagLib_Tag *tag);
/*!
* Returns the tag's year or 0 if year is not set.
*/
TAGLIB_C_EXPORT unsigned int taglib_tag_year(const TagLib_Tag *tag);
/*!
* Returns the tag's track number or 0 if track number is not set.
*/
TAGLIB_C_EXPORT unsigned int taglib_tag_track(const TagLib_Tag *tag);
/*!
* Sets the tag's title.
*
* \note By default this string should be UTF8 encoded.
*/
TAGLIB_C_EXPORT void taglib_tag_set_title(TagLib_Tag *tag, const char *title);
/*!
* Sets the tag's artist.
*
* \note By default this string should be UTF8 encoded.
*/
TAGLIB_C_EXPORT void taglib_tag_set_artist(TagLib_Tag *tag, const char *artist);
/*!
* Sets the tag's album.
*
* \note By default this string should be UTF8 encoded.
*/
TAGLIB_C_EXPORT void taglib_tag_set_album(TagLib_Tag *tag, const char *album);
/*!
* Sets the tag's comment.
*
* \note By default this string should be UTF8 encoded.
*/
TAGLIB_C_EXPORT void taglib_tag_set_comment(TagLib_Tag *tag, const char *comment);
/*!
* Sets the tag's genre.
*
* \note By default this string should be UTF8 encoded.
*/
TAGLIB_C_EXPORT void taglib_tag_set_genre(TagLib_Tag *tag, const char *genre);
/*!
* Sets the tag's year. 0 indicates that this field should be cleared.
*/
TAGLIB_C_EXPORT void taglib_tag_set_year(TagLib_Tag *tag, unsigned int year);
/*!
* Sets the tag's track number. 0 indicates that this field should be cleared.
*/
TAGLIB_C_EXPORT void taglib_tag_set_track(TagLib_Tag *tag, unsigned int track);
/*!
* Frees all of the strings that have been created by the tag.
*/
TAGLIB_C_EXPORT void taglib_tag_free_strings(void);
/******************************************************************************
* Audio Properties API
******************************************************************************/
/*!
* Returns the length of the file in seconds.
*/
TAGLIB_C_EXPORT int taglib_audioproperties_length(const TagLib_AudioProperties *audioProperties);
/*!
* Returns the bitrate of the file in kb/s.
*/
TAGLIB_C_EXPORT int taglib_audioproperties_bitrate(const TagLib_AudioProperties *audioProperties);
/*!
* Returns the sample rate of the file in Hz.
*/
TAGLIB_C_EXPORT int taglib_audioproperties_samplerate(const TagLib_AudioProperties *audioProperties);
/*!
* Returns the number of channels in the audio stream.
*/
TAGLIB_C_EXPORT int taglib_audioproperties_channels(const TagLib_AudioProperties *audioProperties);
/*******************************************************************************
* Special convenience ID3v2 functions
*******************************************************************************/
typedef enum {
TagLib_ID3v2_Latin1,
TagLib_ID3v2_UTF16,
TagLib_ID3v2_UTF16BE,
TagLib_ID3v2_UTF8
} TagLib_ID3v2_Encoding;
/*!
* This sets the default encoding for ID3v2 frames that are written to tags.
*/
TAGLIB_C_EXPORT void taglib_id3v2_set_default_text_encoding(TagLib_ID3v2_Encoding encoding);
#ifdef __cplusplus
}
#endif
#endif /* DO_NOT_DOCUMENT */
#endif