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add support for new PICTURE metadata block

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This commit is contained in:
Josh Coalson
2006-09-23 19:21:19 +00:00
parent aa1edebacd
commit e343ab2b87
26 changed files with 2036 additions and 147 deletions
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90
include/FLAC++/metadata.h
View File

@@ -782,6 +782,80 @@ namespace FLAC {
FLAC__uint32 calculate_cddb_id() const;
};
/** PICTURE metadata block.
* See <A HREF="../format.html#metadata_block_picture">format specification</A>.
*/
class FLACPP_API Picture : public Prototype {
public:
Picture();
//@{
/** Constructs a copy of the given object. This form
* always performs a deep copy.
*/
inline Picture(const Picture &object): Prototype(object) { }
inline Picture(const ::FLAC__StreamMetadata &object): Prototype(object) { }
inline Picture(const ::FLAC__StreamMetadata *object): Prototype(object) { }
//@}
/** Constructs an object with copy control. See
* Prototype(::FLAC__StreamMetadata *object, bool copy).
*/
inline Picture(::FLAC__StreamMetadata *object, bool copy): Prototype(object, copy) { }
~Picture();
//@{
/** Assign from another object. Always performs a deep copy. */
inline Picture &operator=(const Picture &object) { Prototype::operator=(object); return *this; }
inline Picture &operator=(const ::FLAC__StreamMetadata &object) { Prototype::operator=(object); return *this; }
inline Picture &operator=(const ::FLAC__StreamMetadata *object) { Prototype::operator=(object); return *this; }
//@}
/** Assigns an object with copy control. See
* Prototype::assign_object(::FLAC__StreamMetadata *object, bool copy).
*/
inline Picture &assign(::FLAC__StreamMetadata *object, bool copy) { Prototype::assign_object(object, copy); return *this; }
//@{
/** Check for equality, performing a deep compare by following pointers. */
inline bool operator==(const Picture &object) const { return Prototype::operator==(object); }
inline bool operator==(const ::FLAC__StreamMetadata &object) const { return Prototype::operator==(object); }
inline bool operator==(const ::FLAC__StreamMetadata *object) const { return Prototype::operator==(object); }
//@}
//@{
/** Check for inequality, performing a deep compare by following pointers. */
inline bool operator!=(const Picture &object) const { return Prototype::operator!=(object); }
inline bool operator!=(const ::FLAC__StreamMetadata &object) const { return Prototype::operator!=(object); }
inline bool operator!=(const ::FLAC__StreamMetadata *object) const { return Prototype::operator!=(object); }
//@}
::FLAC__StreamMetadata_Picture_Type get_type() const;
const char *get_mime_type() const; // NUL-terminated printable ASCII string
const FLAC__byte *get_description() const; // NUL-terminated UTF-8 string
FLAC__uint32 get_width() const;
FLAC__uint32 get_height() const;
FLAC__uint32 get_depth() const;
FLAC__uint32 get_data_length() const;
const FLAC__byte *get_data() const;
void set_type(::FLAC__StreamMetadata_Picture_Type type);
//! See FLAC__metadata_object_picture_set_mime_type()
bool set_mime_type(const char *string); // NUL-terminated printable ASCII string
//! See FLAC__metadata_object_picture_set_description()
bool set_description(const FLAC__byte *string); // NUL-terminated UTF-8 string
void set_width(FLAC__uint32 value) const;
void set_height(FLAC__uint32 value) const;
void set_depth(FLAC__uint32 value) const;
//! See FLAC__metadata_object_picture_set_data()
bool set_data(const FLAC__byte *data, FLAC__uint32 data_length);
};
/** Opaque metadata block for storing unknown types.
* This should not be used unless you know what you are doing;
* it is currently used only internally to support forward
@@ -855,16 +929,16 @@ namespace FLAC {
* \{
*/
//! See FLAC__metadata_get_streaminfo().
FLACPP_API bool get_streaminfo(const char *filename, StreamInfo &streaminfo);
FLACPP_API bool get_streaminfo(const char *filename, StreamInfo &streaminfo); //< See FLAC__metadata_get_streaminfo().
//! See FLAC__metadata_get_tags().
FLACPP_API bool get_tags(const char *filename, VorbisComment *&tags);
FLACPP_API bool get_tags(const char *filename, VorbisComment &tags);
FLACPP_API bool get_tags(const char *filename, VorbisComment *&tags); //< See FLAC__metadata_get_tags().
FLACPP_API bool get_tags(const char *filename, VorbisComment &tags); //< See FLAC__metadata_get_tags().
//! See FLAC__metadata_get_cuesheet().
FLACPP_API bool get_cuesheet(const char *filename, CueSheet *&cuesheet);
FLACPP_API bool get_cuesheet(const char *filename, CueSheet &cuesheet);
FLACPP_API bool get_cuesheet(const char *filename, CueSheet *&cuesheet); //! See FLAC__metadata_get_cuesheet().
FLACPP_API bool get_cuesheet(const char *filename, CueSheet &cuesheet); //! See FLAC__metadata_get_cuesheet().
FLACPP_API bool get_picture(const char *filename, Picture *&picture, ::FLAC__StreamMetadata_Picture_Type type, const char *mime_type, const FLAC__byte *description, unsigned max_width, unsigned max_height, unsigned max_depth); //! See FLAC__metadata_get_picture().
FLACPP_API bool get_picture(const char *filename, Picture &picture, ::FLAC__StreamMetadata_Picture_Type type, const char *mime_type, const FLAC__byte *description, unsigned max_width, unsigned max_height, unsigned max_depth); //! See FLAC__metadata_get_picture().
/* \} */

113
include/FLAC/format.h
View File

@@ -478,7 +478,10 @@ typedef enum {
FLAC__METADATA_TYPE_CUESHEET = 5,
/**< <A HREF="../format.html#metadata_block_cuesheet">CUESHEET</A> block */
FLAC__METADATA_TYPE_UNDEFINED = 6
FLAC__METADATA_TYPE_PICTURE = 6,
/**< <A HREF="../format.html#metadata_block_picture">PICTURE</A> block */
FLAC__METADATA_TYPE_UNDEFINED = 7
/**< marker to denote beginning of undefined type range; this number will increase as new metadata types are added */
} FLAC__MetadataType;
@@ -678,7 +681,7 @@ typedef struct {
/**< The number of lead-in samples. */
FLAC__bool is_cd;
/**< \c true if CUESHEET corresponds to a Compact Disc, else \c false */
/**< \c true if CUESHEET corresponds to a Compact Disc, else \c false. */
unsigned num_tracks;
/**< The number of tracks. */
@@ -695,6 +698,92 @@ extern FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_RESERVED_LEN; /**<
extern FLAC_API const unsigned FLAC__STREAM_METADATA_CUESHEET_NUM_TRACKS_LEN; /**< == 8 (bits) */
/** An enumeration of the PICTURE types (see FLAC__StreamMetadataPicture and id3 v2.4 APIC tag). */
typedef enum {
FLAC__STREAM_METADATA_PICTURE_TYPE_OTHER = 0, /**< Other */
FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON_STANDARD = 1, /**< 32x32 pixels 'file icon' (PNG only) */
FLAC__STREAM_METADATA_PICTURE_TYPE_FILE_ICON = 2, /**< Other file icon */
FLAC__STREAM_METADATA_PICTURE_TYPE_FRONT_COVER = 3, /**< Cover (front) */
FLAC__STREAM_METADATA_PICTURE_TYPE_BACK_COVER = 4, /**< Cover (back) */
FLAC__STREAM_METADATA_PICTURE_TYPE_LEAFLET_PAGE = 5, /**< Leaflet page */
FLAC__STREAM_METADATA_PICTURE_TYPE_MEDIA = 6, /**< Media (e.g. label side of CD) */
FLAC__STREAM_METADATA_PICTURE_TYPE_LEAD_ARTIST = 7, /**< Lead artist/lead performer/soloist */
FLAC__STREAM_METADATA_PICTURE_TYPE_ARTIST = 8, /**< Artist/performer */
FLAC__STREAM_METADATA_PICTURE_TYPE_CONDUCTOR = 9, /**< Conductor */
FLAC__STREAM_METADATA_PICTURE_TYPE_BAND = 10, /**< Band/Orchestra */
FLAC__STREAM_METADATA_PICTURE_TYPE_COMPOSER = 11, /**< Composer */
FLAC__STREAM_METADATA_PICTURE_TYPE_LYRICIST = 12, /**< Lyricist/text writer */
FLAC__STREAM_METADATA_PICTURE_TYPE_RECORDING_LOCATION = 13, /**< Recording Location */
FLAC__STREAM_METADATA_PICTURE_TYPE_DURING_RECORDING = 14, /**< During recording */
FLAC__STREAM_METADATA_PICTURE_TYPE_DURING_PERFORMANCE = 15, /**< During performance */
FLAC__STREAM_METADATA_PICTURE_TYPE_VIDEO_SCREEN_CAPTURE = 16, /**< Movie/video screen capture */
FLAC__STREAM_METADATA_PICTURE_TYPE_FISH = 17, /**< A bright coloured fish */
FLAC__STREAM_METADATA_PICTURE_TYPE_ILLUSTRATION = 18, /**< Illustration */
FLAC__STREAM_METADATA_PICTURE_TYPE_BAND_LOGOTYPE = 19, /**< Band/artist logotype */
FLAC__STREAM_METADATA_PICTURE_TYPE_PUBLISHER_LOGOTYPE = 20, /**< Publisher/Studio logotype */
FLAC__STREAM_METADATA_PICTURE_TYPE_UNDEFINED
} FLAC__StreamMetadata_Picture_Type;
/** Maps a FLAC__StreamMetadata_Picture_Type to a C string.
*
* Using a FLAC__StreamMetadata_Picture_Type as the index to this array
* will give the string equivalent. The contents should not be
* modified.
*/
extern FLAC_API const char * const FLAC__StreamMetadata_Picture_TypeString[];
/** FLAC PICTURE structure. (See the
* <A HREF="../format.html#metadata_block_picture">format specification</A>
* for the full description of each field.)
*/
typedef struct {
FLAC__StreamMetadata_Picture_Type type;
/**< The kind of picture stored. */
char *mime_type;
/**< Picture data's MIME type, in ASCII printable characters
* 0x20-0x7e, NUL terminated. For best compatibility with players,
* use picture data of MIME type \c image/jpeg or \c image/png. A
* MIME type of '-->' is also allowed, in which case the picture
* data should be a complete URL. In file storage, the MIME type is
* stored as a 32-bit length followed by the ASCII string with no NUL
* terminator, but is converted to a plain C string in this structure
* for convenience.
*/
FLAC__byte *description;
/**< Picture's description in UTF-8, NUL terminated. In file storage,
* the description is stored as a 32-bit length followed by the UTF-8
* string with no NUL terminator, but is converted to a plain C string
* in this structure for convenience.
*/
FLAC__uint32 width;
/**< Picture's width in pixels. */
FLAC__uint32 height;
/**< Picture's height in pixels. */
FLAC__uint32 depth;
/**< Picture's color depth in bits-per-pixel. */
FLAC__uint32 data_length;
/**< Length of binary picture data in bytes. */
FLAC__byte *data;
/**< Binary picture data. */
} FLAC__StreamMetadata_Picture;
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_TYPE_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_MIME_TYPE_LENGTH_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DESCRIPTION_LENGTH_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_WIDTH_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_HEIGHT_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DEPTH_LEN; /**< == 32 (bits) */
extern FLAC_API const unsigned FLAC__STREAM_METADATA_PICTURE_DATA_LENGTH_LEN; /**< == 32 (bits) */
/** Structure that is used when a metadata block of unknown type is loaded.
* The contents are opaque. The structure is used only internally to
* correctly handle unknown metadata.
@@ -725,6 +814,7 @@ typedef struct {
FLAC__StreamMetadata_SeekTable seek_table;
FLAC__StreamMetadata_VorbisComment vorbis_comment;
FLAC__StreamMetadata_CueSheet cue_sheet;
FLAC__StreamMetadata_Picture picture;
FLAC__StreamMetadata_Unknown unknown;
} data;
/**< Polymorphic block data; use the \a type value to determine which
@@ -852,6 +942,25 @@ FLAC_API unsigned FLAC__format_seektable_sort(FLAC__StreamMetadata_SeekTable *se
*/
FLAC_API FLAC__bool FLAC__format_cuesheet_is_legal(const FLAC__StreamMetadata_CueSheet *cue_sheet, FLAC__bool check_cd_da_subset, const char **violation);
/* @@@@ add to unit tests; it is already indirectly tested by the metadata_object tests */
/** Check picture data to see if it conforms to the FLAC specification.
* See the format specification for limits on the contents of the
* PICTURE block.
*
* \param picture A pointer to existing picture data to be checked.
* \param violation Address of a pointer to a string. If there is a
* violation, a pointer to a string explanation of the
* violation will be returned here. \a violation may be
* \c NULL if you don't need the returned string. Do not
* free the returned string; it will always point to static
* data.
* \assert
* \code picture != NULL \endcode
* \retval FLAC__bool
* \c false if picture data is illegal, else \c true.
*/
FLAC_API FLAC__bool FLAC__format_picture_is_legal(const FLAC__StreamMetadata_Picture *picture, const char **violation);
/* \} */
#ifdef __cplusplus

153
include/FLAC/metadata.h
View File

@@ -64,7 +64,8 @@
* There are three metadata interfaces of increasing complexity:
*
* Level 0:
* Read-only access to the STREAMINFO and VORBIS_COMMENT blocks.
* Read-only access to the STREAMINFO, VORBIS_COMMENT, CUESHEET, and
* PICTURE blocks.
*
* Level 1:
* Read-write access to all metadata blocks. This level is write-
@@ -124,7 +125,8 @@ extern "C" {
*
* \brief
* The level 0 interface consists of individual routines to read the
* STREAMINFO, VORBIS_COMMENT, and CUESHEET blocks, requiring only a filename.
* STREAMINFO, VORBIS_COMMENT, CUESHEET, and PICTURE blocks, requiring
* only a filename.
*
* They try to skip any ID3v2 tag at the head of the file.
*
@@ -162,7 +164,7 @@ FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__St
* \code tags != NULL \endcode
* \retval FLAC__bool
* \c true if a valid VORBIS_COMMENT block was read from \a filename,
* and \a *tags will be set to the address of the tag structure.
* and \a *tags will be set to the address of the metadata structure.
* Returns \c false if there was a memory allocation error, a file
* decoder error, or the file contained no VORBIS_COMMENT block, and
* \a *tags will be set to \c NULL.
@@ -181,13 +183,51 @@ FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMe
* \code cuesheet != NULL \endcode
* \retval FLAC__bool
* \c true if a valid CUESHEET block was read from \a filename,
* and \a *cuesheet will be set to the address of the tag structure.
* Returns \c false if there was a memory allocation error, a file
* decoder error, or the file contained no CUESHEET block, and
* \a *cuesheet will be set to \c NULL.
* and \a *cuesheet will be set to the address of the metadata
* structure. Returns \c false if there was a memory allocation
* error, a file decoder error, or the file contained no CUESHEET
* block, and \a *cuesheet will be set to \c NULL.
*/
FLAC_API FLAC__bool FLAC__metadata_get_cuesheet(const char *filename, FLAC__StreamMetadata **cuesheet);
/** Read a PICTURE metadata block of the given FLAC file. This
* function will try to skip any ID3v2 tag at the head of the file.
* Since there can be more than one PICTURE block in a file, this
* function takes a number of parameters that act as constraints to
* the search. The PICTURE block with the largest area matching all
* the constraints will be returned, or \a *picture will be set to
* \c NULL if there was no such block.
*
* \param filename The path to the FLAC file to read.
* \param picture The address where the returned pointer will be
* stored. The \a picture object must be deleted by
* the caller using FLAC__metadata_object_delete().
* \param type The desired picture type. Use \c -1 to mean
* "any type".
* \param mime_type The desired MIME type, e.g. "image/jpeg". The
* string will be matched exactly. Use \c NULL to
* mean "any MIME type".
* \param description The desired description. The string will be
* matched exactly. Use \c NULL to mean "any
* description".
* \param max_width The maximum width in pixels desired. Use
* \c (unsigned)(-1) to mean "any width".
* \param max_height The maximum height in pixels desired. Use
* \c (unsigned)(-1) to mean "any height".
* \param max_depth The maximum color depth in bits-per-pixel desired.
* Use \c (unsigned)(-1) to mean "any depth".
* \assert
* \code filename != NULL \endcode
* \code picture != NULL \endcode
* \retval FLAC__bool
* \c true if a valid PICTURE block was read from \a filename,
* and \a *picture will be set to the address of the metadata
* structure. Returns \c false if there was a memory allocation
* error, a file decoder error, or the file contained no PICTURE
* block, and \a *picture will be set to \c NULL.
*/
FLAC_API FLAC__bool FLAC__metadata_get_picture(const char *filename, FLAC__StreamMetadata **picture, FLAC__StreamMetadata_Picture_Type type, const char *mime_type, const FLAC__byte *description, unsigned max_width, unsigned max_height, unsigned max_depth);
/* \} */
@@ -203,9 +243,9 @@ FLAC_API FLAC__bool FLAC__metadata_get_cuesheet(const char *filename, FLAC__Stre
* - Create an iterator using FLAC__metadata_simple_iterator_new()
* - Attach it to a file using FLAC__metadata_simple_iterator_init() and check
* the exit code. Call FLAC__metadata_simple_iterator_is_writable() to
* see if the file is writable, or read-only access is allowed.
* see if the file is writable, or only read access is allowed.
* - Use FLAC__metadata_simple_iterator_next() and
* FLAC__metadata_simple_iterator_prev() to move around the blocks.
* FLAC__metadata_simple_iterator_prev() to traverse the blocks.
* This is does not read the actual blocks themselves.
* FLAC__metadata_simple_iterator_next() is relatively fast.
* FLAC__metadata_simple_iterator_prev() is slower since it needs to search
@@ -1185,7 +1225,11 @@ FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *b
/** Sets the application data of an APPLICATION block.
*
* If \a copy is \c true, a copy of the data is stored; otherwise, the object
* takes ownership of the pointer.
* takes ownership of the pointer. The existing data will be freed if this
* function is successful, otherwise the original data will remain if \a copy
* is \c true and malloc() fails.
*
* \note It is safe to pass a const pointer to \a data if \a copy is \c true.
*
* \param object A pointer to an existing APPLICATION object.
* \param data A pointer to the data to set.
@@ -1911,6 +1955,95 @@ FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMe
*/
FLAC_API FLAC__uint32 FLAC__metadata_object_cuesheet_calculate_cddb_id(const FLAC__StreamMetadata *object);
/** Sets the MIME type of a PICTURE block.
*
* If \a copy is \c true, a copy of the string is stored; otherwise, the object
* takes ownership of the pointer. The existing string will be freed if this
* function is successful, otherwise the original string will remain if \a copy
* is \c true and malloc() fails.
*
* \note It is safe to pass a const pointer to \a mime_type if \a copy is \c true.
*
* \param object A pointer to an existing PICTURE object.
* \param mime_type A pointer to the MIME type string. The string must be
* ASCII characters 0x20-0x7e, NUL-terminated. No validation
* is done.
* \param copy See above.
* \assert
* \code object != NULL \endcode
* \code object->type == FLAC__METADATA_TYPE_PICTURE \endcode
* \code (mime_type != NULL) \endcode
* \retval FLAC__bool
* \c false if \a copy is \c true and malloc() fails, else \c true.
*/
FLAC_API FLAC__bool FLAC__metadata_object_picture_set_mime_type(FLAC__StreamMetadata *object, char *mime_type, FLAC__bool copy);
/** Sets the description of a PICTURE block.
*
* If \a copy is \c true, a copy of the string is stored; otherwise, the object
* takes ownership of the pointer. The existing string will be freed if this
* function is successful, otherwise the original string will remain if \a copy
* is \c true and malloc() fails.
*
* \note It is safe to pass a const pointer to \a description if \a copy is \c true.
*
* \param object A pointer to an existing PICTURE object.
* \param description A pointer to the description string. The string must be
* valid UTF-8, NUL-terminated. No validation is done.
* \param copy See above.
* \assert
* \code object != NULL \endcode
* \code object->type == FLAC__METADATA_TYPE_PICTURE \endcode
* \code (description != NULL) \endcode
* \retval FLAC__bool
* \c false if \a copy is \c true and malloc() fails, else \c true.
*/
FLAC_API FLAC__bool FLAC__metadata_object_picture_set_description(FLAC__StreamMetadata *object, FLAC__byte *description, FLAC__bool copy);
/** Sets the picture data of a PICTURE block.
*
* If \a copy is \c true, a copy of the data is stored; otherwise, the object
* takes ownership of the pointer. Also sets the \a data_length field of the
* metadata object to what is passed in as the \a length parameter. The
* existing data will be freed if this function is successful, otherwise the
* original data and data_length will remain if \a copy is \c true and
* malloc() fails.
*
* \note It is safe to pass a const pointer to \a data if \a copy is \c true.
*
* \param object A pointer to an existing PICTURE object.
* \param data A pointer to the data to set.
* \param length The length of \a data in bytes.
* \param copy See above.
* \assert
* \code object != NULL \endcode
* \code object->type == FLAC__METADATA_TYPE_PICTURE \endcode
* \code (data != NULL && length > 0) ||
* (data == NULL && length == 0 && copy == false) \endcode
* \retval FLAC__bool
* \c false if \a copy is \c true and malloc() fails, else \c true.
*/
FLAC_API FLAC__bool FLAC__metadata_object_picture_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, FLAC__uint32 length, FLAC__bool copy);
/** Check a PICTURE block to see if it conforms to the FLAC specification.
* See the format specification for limits on the contents of the
* PICTURE block.
*
* \param picture A pointer to existing PICTURE block to be checked.
* \param violation Address of a pointer to a string. If there is a
* violation, a pointer to a string explanation of the
* violation will be returned here. \a violation may be
* \c NULL if you don't need the returned string. Do not
* free the returned string; it will always point to static
* data.
* \assert
* \code object != NULL \endcode
* \code object->type == FLAC__METADATA_TYPE_PICTURE \endcode
* \retval FLAC__bool
* \c false if PICTURE block is illegal, else \c true.
*/
FLAC_API FLAC__bool FLAC__metadata_object_picture_is_legal(const FLAC__StreamMetadata *object, const char **violation);
/* \} */
#ifdef __cplusplus

4
include/test_libs_common/metadata_utils.h
View File

@@ -40,6 +40,8 @@ FLAC__bool mutils__compare_block_data_vorbiscomment(const FLAC__StreamMetadata_V
FLAC__bool mutils__compare_block_data_cuesheet(const FLAC__StreamMetadata_CueSheet *block, const FLAC__StreamMetadata_CueSheet *blockcopy);
FLAC__bool mutils__compare_block_data_picture(const FLAC__StreamMetadata_Picture *block, const FLAC__StreamMetadata_Picture *blockcopy);
FLAC__bool mutils__compare_block_data_unknown(const FLAC__StreamMetadata_Unknown *block, const FLAC__StreamMetadata_Unknown *blockcopy, unsigned block_length);
FLAC__bool mutils__compare_block(const FLAC__StreamMetadata *block, const FLAC__StreamMetadata *blockcopy);
@@ -52,6 +54,7 @@ void mutils__init_metadata_blocks(
FLAC__StreamMetadata *application2,
FLAC__StreamMetadata *vorbiscomment,
FLAC__StreamMetadata *cuesheet,
FLAC__StreamMetadata *picture,
FLAC__StreamMetadata *unknown
);
@@ -63,6 +66,7 @@ void mutils__free_metadata_blocks(
FLAC__StreamMetadata *application2,
FLAC__StreamMetadata *vorbiscomment,
FLAC__StreamMetadata *cuesheet,
FLAC__StreamMetadata *picture,
FLAC__StreamMetadata *unknown
);