metadata.h
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上传日期:2014-04-03
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Windows CE
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C/C++
- /* libFLAC - Free Lossless Audio Codec library
- * Copyright (C) 2001,2002,2003,2004,2005 Josh Coalson
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * - Neither the name of the Xiph.org Foundation nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- #ifndef FLAC__METADATA_H
- #define FLAC__METADATA_H
- #include "export.h"
- #include "callback.h"
- #include "format.h"
- /******************************************************************************
- (For an example of how all these routines are used, see the source
- code for the unit tests in src/test_libFLAC/metadata_*.c, or metaflac
- in src/metaflac/)
- ******************************************************************************/
- /** file include/FLAC/metadata.h
- *
- * brief
- * This module provides functions for creating and manipulating FLAC
- * metadata blocks in memory, and three progressively more powerful
- * interfaces for traversing and editing metadata in FLAC files.
- *
- * See the detailed documentation for each interface in the
- * link flac_metadata metadata endlink module.
- */
- /** defgroup flac_metadata FLAC/metadata.h: metadata interfaces
- * ingroup flac
- *
- * brief
- * This module provides functions for creating and manipulating FLAC
- * metadata blocks in memory, and three progressively more powerful
- * interfaces for traversing and editing metadata in FLAC files.
- *
- * There are three metadata interfaces of increasing complexity:
- *
- * Level 0:
- * Read-only access to the STREAMINFO and VORBIS_COMMENT blocks.
- *
- * Level 1:
- * Read-write access to all metadata blocks. This level is write-
- * efficient in most cases (more on this below), and uses less memory
- * than level 2.
- *
- * Level 2:
- * Read-write access to all metadata blocks. This level is write-
- * efficient in all cases, but uses more memory since all metadata for
- * the whole file is read into memory and manipulated before writing
- * out again.
- *
- * What do we mean by efficient? Since FLAC metadata appears at the
- * beginning of the file, when writing metadata back to a FLAC file
- * it is possible to grow or shrink the metadata such that the entire
- * file must be rewritten. However, if the size remains the same during
- * changes or PADDING blocks are utilized, only the metadata needs to be
- * overwritten, which is much faster.
- *
- * Efficient means the whole file is rewritten at most one time, and only
- * when necessary. Level 1 is not efficient only in the case that you
- * cause more than one metadata block to grow or shrink beyond what can
- * be accomodated by padding. In this case you should probably use level
- * 2, which allows you to edit all the metadata for a file in memory and
- * write it out all at once.
- *
- * All levels know how to skip over and not disturb an ID3v2 tag at the
- * front of the file.
- *
- * All levels access files via their filenames. In addition, level 2
- * has additional alternative read and write functions that take an I/O
- * handle and callbacks, for times when access by filename is not possible.
- *
- * In addition to the three interfaces, this module defines functions for
- * creating and manipulating various metadata objects in memory. As we see
- * from the Format module, FLAC metadata blocks in memory are very primitive
- * structures for storing information in an efficient way. Reading
- * information from the structures is easy but creating or modifying them
- * directly is more complex. The metadata object routines here facilitate
- * this by taking care of the consistency and memory management drudgery.
- *
- * Unless you will be using the level 1 or 2 interfaces to modify existing
- * metadata however, you will not probably not need these.
- *
- * From a dependency standpoint, none of the encoders or decoders require
- * the metadata module. This is so that embedded users can strip out the
- * metadata module from libFLAC to reduce the size and complexity.
- */
- #ifdef __cplusplus
- extern "C" {
- #endif
- /** defgroup flac_metadata_level0 FLAC/metadata.h: metadata level 0 interface
- * ingroup flac_metadata
- *
- * brief
- * The level 0 interface consists of individual routines to read the
- * STREAMINFO and VORBIS_COMMENT blocks, requiring only a filename.
- *
- * It skips any ID3v2 tag at the head of the file.
- *
- * {
- */
- /** Read the STREAMINFO metadata block of the given FLAC file. This function
- * will skip any ID3v2 tag at the head of the file.
- *
- * param filename The path to the FLAC file to read.
- * param streaminfo A pointer to space for the STREAMINFO block. Since
- * FLAC__StreamMetadata is a simple structure with no
- * memory allocation involved, you pass the address of
- * an existing structure. It need not be initialized.
- * assert
- * code filename != NULL endcode
- * code streaminfo != NULL endcode
- * retval FLAC__bool
- * c true if a valid STREAMINFO block was read from a filename. Returns
- * c false if there was a memory allocation error, a file decoder error,
- * or the file contained no STREAMINFO block. (A memory allocation error
- * is possible because this function must set up a file decoder.)
- */
- FLAC_API FLAC__bool FLAC__metadata_get_streaminfo(const char *filename, FLAC__StreamMetadata *streaminfo);
- /** Read the VORBIS_COMMENT metadata block of the given FLAC file. This
- * function will skip any ID3v2 tag at the head of the file.
- *
- * param filename The path to the FLAC file to read.
- * param tags The address where the returned pointer will be
- * stored. The a tags object must be deleted by
- * the caller using FLAC__metadata_object_delete().
- * assert
- * code filename != NULL endcode
- * code streaminfo != 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.
- * 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.
- */
- FLAC_API FLAC__bool FLAC__metadata_get_tags(const char *filename, FLAC__StreamMetadata **tags);
- /* } */
- /** defgroup flac_metadata_level1 FLAC/metadata.h: metadata level 1 interface
- * ingroup flac_metadata
- *
- * brief
- * The level 1 interface provides read-write access to FLAC file metadata and
- * operates directly on the FLAC file.
- *
- * The general usage of this interface is:
- *
- * - 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.
- * - Use FLAC__metadata_simple_iterator_next() and
- * FLAC__metadata_simple_iterator_prev() to move around 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
- * forward from the front of the file.
- * - Use FLAC__metadata_simple_iterator_get_block_type() or
- * FLAC__metadata_simple_iterator_get_block() to access the actual data at
- * the current iterator position. The returned object is yours to modify
- * and free.
- * - Use FLAC__metadata_simple_iterator_set_block() to write a modified block
- * back. You must have write permission to the original file. Make sure to
- * read the whole comment to FLAC__metadata_simple_iterator_set_block()
- * below.
- * - Use FLAC__metadata_simple_iterator_insert_block_after() to add new blocks.
- * Use the object creation functions from
- * link flac_metadata_object here endlink to generate new objects.
- * - Use FLAC__metadata_simple_iterator_delete_block() to remove the block
- * currently referred to by the iterator, or replace it with padding.
- * - Destroy the iterator with FLAC__metadata_simple_iterator_delete() when
- * finished.
- *
- * note
- * The FLAC file remains open the whole time between
- * FLAC__metadata_simple_iterator_init() and
- * FLAC__metadata_simple_iterator_delete(), so make sure you are not altering
- * the file during this time.
- *
- * note
- * Do not modify the a is_last, a length, or a type fields of returned
- * FLAC__StreamMetadata objects. These are managed automatically.
- *
- * note
- * If any of the modification functions
- * (FLAC__metadata_simple_iterator_set_block(),
- * FLAC__metadata_simple_iterator_delete_block(),
- * FLAC__metadata_simple_iterator_insert_block_after(), etc.) return c false,
- * you should delete the iterator as it may no longer be valid.
- *
- * {
- */
- struct FLAC__Metadata_SimpleIterator;
- /** The opaque structure definition for the level 1 iterator type.
- * See the
- * link flac_metadata_level1 metadata level 1 module endlink
- * for a detailed description.
- */
- typedef struct FLAC__Metadata_SimpleIterator FLAC__Metadata_SimpleIterator;
- /** Status type for FLAC__Metadata_SimpleIterator.
- *
- * The iterator's current status can be obtained by calling FLAC__metadata_simple_iterator_status().
- */
- typedef enum {
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK = 0,
- /**< The iterator is in the normal OK state */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ILLEGAL_INPUT,
- /**< The data passed into a function violated the function's usage criteria */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_ERROR_OPENING_FILE,
- /**< The iterator could not open the target file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_A_FLAC_FILE,
- /**< The iterator could not find the FLAC signature at the start of the file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_NOT_WRITABLE,
- /**< The iterator tried to write to a file that was not writable */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_BAD_METADATA,
- /**< The iterator encountered input that does not conform to the FLAC metadata specification */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_READ_ERROR,
- /**< The iterator encountered an error while reading the FLAC file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_SEEK_ERROR,
- /**< The iterator encountered an error while seeking in the FLAC file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_WRITE_ERROR,
- /**< The iterator encountered an error while writing the FLAC file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_RENAME_ERROR,
- /**< The iterator encountered an error renaming the FLAC file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_UNLINK_ERROR,
- /**< The iterator encountered an error removing the temporary file */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_MEMORY_ALLOCATION_ERROR,
- /**< Memory allocation failed */
- FLAC__METADATA_SIMPLE_ITERATOR_STATUS_INTERNAL_ERROR
- /**< The caller violated an assertion or an unexpected error occurred */
- } FLAC__Metadata_SimpleIteratorStatus;
- /** Maps a FLAC__Metadata_SimpleIteratorStatus to a C string.
- *
- * Using a FLAC__Metadata_SimpleIteratorStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__Metadata_SimpleIteratorStatusString[];
- /** Create a new iterator instance.
- *
- * retval FLAC__Metadata_SimpleIterator*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__Metadata_SimpleIterator *FLAC__metadata_simple_iterator_new();
- /** Free an iterator instance. Deletes the object pointed to by a iterator.
- *
- * param iterator A pointer to an existing iterator.
- * assert
- * code iterator != NULL endcode
- */
- FLAC_API void FLAC__metadata_simple_iterator_delete(FLAC__Metadata_SimpleIterator *iterator);
- /** Get the current status of the iterator. Call this after a function
- * returns c false to get the reason for the error. Also resets the status
- * to FLAC__METADATA_SIMPLE_ITERATOR_STATUS_OK.
- *
- * param iterator A pointer to an existing iterator.
- * assert
- * code iterator != NULL endcode
- * retval FLAC__Metadata_SimpleIteratorStatus
- * The current status of the iterator.
- */
- FLAC_API FLAC__Metadata_SimpleIteratorStatus FLAC__metadata_simple_iterator_status(FLAC__Metadata_SimpleIterator *iterator);
- /** Initialize the iterator to point to the first metadata block in the
- * given FLAC file.
- *
- * param iterator A pointer to an existing iterator.
- * param filename The path to the FLAC file.
- * param read_only If c true, the FLAC file will be opened
- * in read-only mode; if c false, the FLAC
- * file will be opened for edit even if no
- * edits are performed.
- * param preserve_file_stats If c true, the owner and modification
- * time will be preserved even if the FLAC
- * file is written to.
- * assert
- * code iterator != NULL endcode
- * code filename != NULL endcode
- * retval FLAC__bool
- * c false if a memory allocation error occurs, the file can't be
- * opened, or another error occurs, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_init(FLAC__Metadata_SimpleIterator *iterator, const char *filename, FLAC__bool read_only, FLAC__bool preserve_file_stats);
- /** Returns c true if the FLAC file is writable. If c false, calls to
- * FLAC__metadata_simple_iterator_set_block() and
- * FLAC__metadata_simple_iterator_insert_block_after() will fail.
- *
- * param iterator A pointer to an existing iterator.
- * assert
- * code iterator != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_is_writable(const FLAC__Metadata_SimpleIterator *iterator);
- /** Moves the iterator forward one metadata block, returning c false if
- * already at the end.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * retval FLAC__bool
- * c false if already at the last metadata block of the chain, else
- * c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_next(FLAC__Metadata_SimpleIterator *iterator);
- /** Moves the iterator backward one metadata block, returning c false if
- * already at the beginning.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * retval FLAC__bool
- * c false if already at the first metadata block of the chain, else
- * c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_prev(FLAC__Metadata_SimpleIterator *iterator);
- /** Get the type of the metadata block at the current position. This
- * avoids reading the actual block data which can save time for large
- * blocks.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * retval FLAC__MetadataType
- * The type of the metadata block at the current iterator position.
- */
- FLAC_API FLAC__MetadataType FLAC__metadata_simple_iterator_get_block_type(const FLAC__Metadata_SimpleIterator *iterator);
- /** Get the metadata block at the current position. You can modify the
- * block but must use FLAC__metadata_simple_iterator_set_block() to
- * write it back to the FLAC file.
- *
- * You must call FLAC__metadata_object_delete() on the returned object
- * when you are finished with it.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * retval FLAC__StreamMetadata*
- * The current metadata block.
- */
- FLAC_API FLAC__StreamMetadata *FLAC__metadata_simple_iterator_get_block(FLAC__Metadata_SimpleIterator *iterator);
- /** Write a block back to the FLAC file. This function tries to be
- * as efficient as possible; how the block is actually written is
- * shown by the following:
- *
- * Existing block is a STREAMINFO block and the new block is a
- * STREAMINFO block: the new block is written in place. Make sure
- * you know what you're doing when changing the values of a
- * STREAMINFO block.
- *
- * Existing block is a STREAMINFO block and the new block is a
- * not a STREAMINFO block: this is an error since the first block
- * must be a STREAMINFO block. Returns c false without altering the
- * file.
- *
- * Existing block is not a STREAMINFO block and the new block is a
- * STREAMINFO block: this is an error since there may be only one
- * STREAMINFO block. Returns c false without altering the file.
- *
- * Existing block and new block are the same length: the existing
- * block will be replaced by the new block, written in place.
- *
- * Existing block is longer than new block: if use_padding is c true,
- * the existing block will be overwritten in place with the new
- * block followed by a PADDING block, if possible, to make the total
- * size the same as the existing block. Remember that a padding
- * block requires at least four bytes so if the difference in size
- * between the new block and existing block is less than that, the
- * entire file will have to be rewritten, using the new block's
- * exact size. If use_padding is c false, the entire file will be
- * rewritten, replacing the existing block by the new block.
- *
- * Existing block is shorter than new block: if use_padding is c true,
- * the function will try and expand the new block into the following
- * PADDING block, if it exists and doing so won't shrink the PADDING
- * block to less than 4 bytes. If there is no following PADDING
- * block, or it will shrink to less than 4 bytes, or use_padding is
- * c false, the entire file is rewritten, replacing the existing block
- * with the new block. Note that in this case any following PADDING
- * block is preserved as is.
- *
- * After writing the block, the iterator will remain in the same
- * place, i.e. pointing to the new block.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param block The block to set.
- * param use_padding See above.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * code block != NULL endcode
- * retval FLAC__bool
- * c true if successful, else c false.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_set_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding);
- /** This is similar to FLAC__metadata_simple_iterator_set_block()
- * except that instead of writing over an existing block, it appends
- * a block after the existing block. a use_padding is again used to
- * tell the function to try an expand into following padding in an
- * attempt to avoid rewriting the entire file.
- *
- * This function will fail and return c false if given a STREAMINFO
- * block.
- *
- * After writing the block, the iterator will be pointing to the
- * new block.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param block The block to set.
- * param use_padding See above.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * code block != NULL endcode
- * retval FLAC__bool
- * c true if successful, else c false.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_insert_block_after(FLAC__Metadata_SimpleIterator *iterator, FLAC__StreamMetadata *block, FLAC__bool use_padding);
- /** Deletes the block at the current position. This will cause the
- * entire FLAC file to be rewritten, unless a use_padding is c true,
- * in which case the block will be replaced by an equal-sized PADDING
- * block. The iterator will be left pointing to the block before the
- * one just deleted.
- *
- * You may not delete the STREAMINFO block.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param use_padding See above.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_simple_iterator_init()
- * retval FLAC__bool
- * c true if successful, else c false.
- */
- FLAC_API FLAC__bool FLAC__metadata_simple_iterator_delete_block(FLAC__Metadata_SimpleIterator *iterator, FLAC__bool use_padding);
- /* } */
- /** defgroup flac_metadata_level2 FLAC/metadata.h: metadata level 2 interface
- * ingroup flac_metadata
- *
- * brief
- * The level 2 interface provides read-write access to FLAC file metadata;
- * all metadata is read into memory, operated on in memory, and then written
- * to file, which is more efficient than level 1 when editing multiple blocks.
- *
- * The general usage of this interface is:
- *
- * - Create a new chain using FLAC__metadata_chain_new(). A chain is a
- * linked list of FLAC metadata blocks.
- * - Read all metadata into the the chain from a FLAC file using
- * FLAC__metadata_chain_read() and check the status.
- * - Optionally, consolidate the padding using
- * FLAC__metadata_chain_merge_padding() or
- * FLAC__metadata_chain_sort_padding().
- * - Create a new iterator using FLAC__metadata_iterator_new()
- * - Initialize the iterator to point to the first element in the chain
- * using FLAC__metadata_iterator_init()
- * - Traverse the chain using FLAC__metadata_iterator_next and
- * FLAC__metadata_iterator_prev().
- * - Get a block for reading or modification using
- * FLAC__metadata_iterator_get_block(). The pointer to the object
- * inside the chain is returned, so the block is yours to modify.
- * Changes will be reflected in the FLAC file when you write the
- * chain. You can also add and delete blocks (see functions below).
- * - When done, write out the chain using FLAC__metadata_chain_write().
- * Make sure to read the whole comment to the function below.
- * - Delete the chain using FLAC__metadata_chain_delete().
- *
- * note
- * Even though the FLAC file is not open while the chain is being
- * manipulated, you must not alter the file externally during
- * this time. The chain assumes the FLAC file will not change
- * between the time of FLAC__metadata_chain_read() and
- * FLAC__metadata_chain_write().
- *
- * note
- * Do not modify the is_last, length, or type fields of returned
- * FLAC__StreamMetadata objects. These are managed automatically.
- *
- * note
- * The metadata objects returned by FLAC__metadata_iterator_get_block()
- * are owned by the chain; do not FLAC__metadata_object_delete() them.
- * In the same way, blocks passed to FLAC__metadata_iterator_set_block()
- * become owned by the chain and they will be deleted when the chain is
- * deleted.
- *
- * {
- */
- struct FLAC__Metadata_Chain;
- /** The opaque structure definition for the level 2 chain type.
- */
- typedef struct FLAC__Metadata_Chain FLAC__Metadata_Chain;
- struct FLAC__Metadata_Iterator;
- /** The opaque structure definition for the level 2 iterator type.
- */
- typedef struct FLAC__Metadata_Iterator FLAC__Metadata_Iterator;
- typedef enum {
- FLAC__METADATA_CHAIN_STATUS_OK = 0,
- /**< The chain is in the normal OK state */
- FLAC__METADATA_CHAIN_STATUS_ILLEGAL_INPUT,
- /**< The data passed into a function violated the function's usage criteria */
- FLAC__METADATA_CHAIN_STATUS_ERROR_OPENING_FILE,
- /**< The chain could not open the target file */
- FLAC__METADATA_CHAIN_STATUS_NOT_A_FLAC_FILE,
- /**< The chain could not find the FLAC signature at the start of the file */
- FLAC__METADATA_CHAIN_STATUS_NOT_WRITABLE,
- /**< The chain tried to write to a file that was not writable */
- FLAC__METADATA_CHAIN_STATUS_BAD_METADATA,
- /**< The chain encountered input that does not conform to the FLAC metadata specification */
- FLAC__METADATA_CHAIN_STATUS_READ_ERROR,
- /**< The chain encountered an error while reading the FLAC file */
- FLAC__METADATA_CHAIN_STATUS_SEEK_ERROR,
- /**< The chain encountered an error while seeking in the FLAC file */
- FLAC__METADATA_CHAIN_STATUS_WRITE_ERROR,
- /**< The chain encountered an error while writing the FLAC file */
- FLAC__METADATA_CHAIN_STATUS_RENAME_ERROR,
- /**< The chain encountered an error renaming the FLAC file */
- FLAC__METADATA_CHAIN_STATUS_UNLINK_ERROR,
- /**< The chain encountered an error removing the temporary file */
- FLAC__METADATA_CHAIN_STATUS_MEMORY_ALLOCATION_ERROR,
- /**< Memory allocation failed */
- FLAC__METADATA_CHAIN_STATUS_INTERNAL_ERROR,
- /**< The caller violated an assertion or an unexpected error occurred */
- FLAC__METADATA_CHAIN_STATUS_INVALID_CALLBACKS,
- /**< One or more of the required callbacks was NULL */
- FLAC__METADATA_CHAIN_STATUS_READ_WRITE_MISMATCH,
- /**< FLAC__metadata_chain_write() was called on a chain read by
- * FLAC__metadata_chain_read_with_callbacks(), or
- * FLAC__metadata_chain_write_with_callbacks() or
- * FLAC__metadata_chain_write_with_callbacks_and_tempfile() was
- * called on a chain read by FLAC__metadata_chain_read(). Matching
- * read/write methods must always be used. */
- FLAC__METADATA_CHAIN_STATUS_WRONG_WRITE_CALL
- /**< FLAC__metadata_chain_write_with_callbacks() was called when the
- * chain write requires a tempfile; use
- * FLAC__metadata_chain_write_with_callbacks_and_tempfile() instead.
- * Or, FLAC__metadata_chain_write_with_callbacks_and_tempfile() was
- * called when the chain write does not require a tempfile; use
- * FLAC__metadata_chain_write_with_callbacks() instead.
- * Always check FLAC__metadata_chain_check_if_tempfile_needed()
- * before writing via callbacks. */
- } FLAC__Metadata_ChainStatus;
- /** Maps a FLAC__Metadata_ChainStatus to a C string.
- *
- * Using a FLAC__Metadata_ChainStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__Metadata_ChainStatusString[];
- /*********** FLAC__Metadata_Chain ***********/
- /** Create a new chain instance.
- *
- * retval FLAC__Metadata_Chain*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__Metadata_Chain *FLAC__metadata_chain_new();
- /** Free a chain instance. Deletes the object pointed to by a chain.
- *
- * param chain A pointer to an existing chain.
- * assert
- * code chain != NULL endcode
- */
- FLAC_API void FLAC__metadata_chain_delete(FLAC__Metadata_Chain *chain);
- /** Get the current status of the chain. Call this after a function
- * returns c false to get the reason for the error. Also resets the
- * status to FLAC__METADATA_CHAIN_STATUS_OK.
- *
- * param chain A pointer to an existing chain.
- * assert
- * code chain != NULL endcode
- * retval FLAC__Metadata_ChainStatus
- * The current status of the chain.
- */
- FLAC_API FLAC__Metadata_ChainStatus FLAC__metadata_chain_status(FLAC__Metadata_Chain *chain);
- /** Read all metadata from a FLAC file into the chain.
- *
- * param chain A pointer to an existing chain.
- * param filename The path to the FLAC file to read.
- * assert
- * code chain != NULL endcode
- * code filename != NULL endcode
- * retval FLAC__bool
- * c true if a valid list of metadata blocks was read from
- * a filename, else c false. On failure, check the status with
- * FLAC__metadata_chain_status().
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_read(FLAC__Metadata_Chain *chain, const char *filename);
- /** Read all metadata from a FLAC stream into the chain via I/O callbacks.
- *
- * The a handle need only be open for reading, but must be seekable.
- * The equivalent minimum stdio fopen() file mode is c "r" (or c "rb"
- * for Windows).
- *
- * param chain A pointer to an existing chain.
- * param handle The I/O handle of the FLAC stream to read. The
- * handle will NOT be closed after the metadata is read;
- * that is the duty of the caller.
- * param callbacks
- * A set of callbacks to use for I/O. The mandatory
- * callbacks are a read, a seek, and a tell.
- * assert
- * code chain != NULL endcode
- * retval FLAC__bool
- * c true if a valid list of metadata blocks was read from
- * a handle, else c false. On failure, check the status with
- * FLAC__metadata_chain_status().
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_read_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks);
- /** Checks if writing the given chain would require the use of a
- * temporary file, or if it could be written in place.
- *
- * Under certain conditions, padding can be utilized so that writing
- * edited metadata back to the FLAC file does not require rewriting the
- * entire file. If rewriting is required, then a temporary workfile is
- * required. When writing metadata using callbacks, you must check
- * this function to know whether to call
- * FLAC__metadata_chain_write_with_callbacks() or
- * FLAC__metadata_chain_write_with_callbacks_and_tempfile(). When
- * writing with FLAC__metadata_chain_write(), the temporary file is
- * handled internally.
- *
- * param chain A pointer to an existing chain.
- * param use_padding
- * Whether or not padding will be allowed to be used
- * during the write. The value of a use_padding given
- * here must match the value later passed to
- * FLAC__metadata_chain_write_with_callbacks() or
- * FLAC__metadata_chain_write_with_callbacks_with_tempfile().
- * assert
- * code chain != NULL endcode
- * retval FLAC__bool
- * c true if writing the current chain would require a tempfile, or
- * c false if metadata can be written in place.
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_check_if_tempfile_needed(FLAC__Metadata_Chain *chain, FLAC__bool use_padding);
- /** Write all metadata out to the FLAC file. This function tries to be as
- * efficient as possible; how the metadata is actually written is shown by
- * the following:
- *
- * If the current chain is the same size as the existing metadata, the new
- * data is written in place.
- *
- * If the current chain is longer than the existing metadata, and
- * a use_padding is c true, and the last block is a PADDING block of
- * sufficient length, the function will truncate the final padding block
- * so that the overall size of the metadata is the same as the existing
- * metadata, and then just rewrite the metadata. Otherwise, if not all of
- * the above conditions are met, the entire FLAC file must be rewritten.
- * If you want to use padding this way it is a good idea to call
- * FLAC__metadata_chain_sort_padding() first so that you have the maximum
- * amount of padding to work with, unless you need to preserve ordering
- * of the PADDING blocks for some reason.
- *
- * If the current chain is shorter than the existing metadata, and
- * a use_padding is c true, and the final block is a PADDING block, the padding
- * is extended to make the overall size the same as the existing data. If
- * a use_padding is c true and the last block is not a PADDING block, a new
- * PADDING block is added to the end of the new data to make it the same
- * size as the existing data (if possible, see the note to
- * FLAC__metadata_simple_iterator_set_block() about the four byte limit)
- * and the new data is written in place. If none of the above apply or
- * a use_padding is c false, the entire FLAC file is rewritten.
- *
- * If a preserve_file_stats is c true, the owner and modification time will
- * be preserved even if the FLAC file is written.
- *
- * For this write function to be used, the chain must have been read with
- * FLAC__metadata_chain_read(), not FLAC__metadata_chain_read_with_callbacks().
- *
- * param chain A pointer to an existing chain.
- * param use_padding See above.
- * param preserve_file_stats See above.
- * assert
- * code chain != NULL endcode
- * retval FLAC__bool
- * c true if the write succeeded, else c false. On failure,
- * check the status with FLAC__metadata_chain_status().
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_write(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__bool preserve_file_stats);
- /** Write all metadata out to a FLAC stream via callbacks.
- *
- * (See FLAC__metadata_chain_write() for the details on how padding is
- * used to write metadata in place if possible.)
- *
- * The a handle must be open for updating and be seekable. The
- * equivalent minimum stdio fopen() file mode is c "r+" (or c "r+b"
- * for Windows).
- *
- * For this write function to be used, the chain must have been read with
- * FLAC__metadata_chain_read_with_callbacks(), not FLAC__metadata_chain_read().
- * Also, FLAC__metadata_chain_check_if_tempfile_needed() must have returned
- * c false.
- *
- * param chain A pointer to an existing chain.
- * param use_padding See FLAC__metadata_chain_write()
- * param handle The I/O handle of the FLAC stream to write. The
- * handle will NOT be closed after the metadata is
- * written; that is the duty of the caller.
- * param callbacks A set of callbacks to use for I/O. The mandatory
- * callbacks are a write and a seek.
- * assert
- * code chain != NULL endcode
- * retval FLAC__bool
- * c true if the write succeeded, else c false. On failure,
- * check the status with FLAC__metadata_chain_status().
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks);
- /** Write all metadata out to a FLAC stream via callbacks.
- *
- * (See FLAC__metadata_chain_write() for the details on how padding is
- * used to write metadata in place if possible.)
- *
- * This version of the write-with-callbacks function must be used when
- * FLAC__metadata_chain_check_if_tempfile_needed() returns true. In
- * this function, you must supply an I/O handle corresponding to the
- * FLAC file to edit, and a temporary handle to which the new FLAC
- * file will be written. It is the caller's job to move this temporary
- * FLAC file on top of the original FLAC file to complete the metadata
- * edit.
- *
- * The a handle must be open for reading and be seekable. The
- * equivalent minimum stdio fopen() file mode is c "r" (or c "rb"
- * for Windows).
- *
- * The a temp_handle must be open for writing. The
- * equivalent minimum stdio fopen() file mode is c "w" (or c "wb"
- * for Windows). It should be an empty stream, or at least positioned
- * at the start-of-file (in which case it is the caller's duty to
- * truncate it on return).
- *
- * For this write function to be used, the chain must have been read with
- * FLAC__metadata_chain_read_with_callbacks(), not FLAC__metadata_chain_read().
- * Also, FLAC__metadata_chain_check_if_tempfile_needed() must have returned
- * c true.
- *
- * param chain A pointer to an existing chain.
- * param use_padding See FLAC__metadata_chain_write()
- * param handle The I/O handle of the original FLAC stream to read.
- * The handle will NOT be closed after the metadata is
- * written; that is the duty of the caller.
- * param callbacks A set of callbacks to use for I/O on a handle.
- * The mandatory callbacks are a read, a seek, and
- * a eof.
- * param temp_handle The I/O handle of the FLAC stream to write. The
- * handle will NOT be closed after the metadata is
- * written; that is the duty of the caller.
- * param temp_callbacks
- * A set of callbacks to use for I/O on temp_handle.
- * The only mandatory callback is a write.
- * assert
- * code chain != NULL endcode
- * retval FLAC__bool
- * c true if the write succeeded, else c false. On failure,
- * check the status with FLAC__metadata_chain_status().
- */
- FLAC_API FLAC__bool FLAC__metadata_chain_write_with_callbacks_and_tempfile(FLAC__Metadata_Chain *chain, FLAC__bool use_padding, FLAC__IOHandle handle, FLAC__IOCallbacks callbacks, FLAC__IOHandle temp_handle, FLAC__IOCallbacks temp_callbacks);
- /** Merge adjacent PADDING blocks into a single block.
- *
- * note This function does not write to the FLAC file, it only
- * modifies the chain.
- *
- * warning Any iterator on the current chain will become invalid after this
- * call. You should delete the iterator and get a new one.
- *
- * param chain A pointer to an existing chain.
- * assert
- * code chain != NULL endcode
- */
- FLAC_API void FLAC__metadata_chain_merge_padding(FLAC__Metadata_Chain *chain);
- /** This function will move all PADDING blocks to the end on the metadata,
- * then merge them into a single block.
- *
- * note This function does not write to the FLAC file, it only
- * modifies the chain.
- *
- * warning Any iterator on the current chain will become invalid after this
- * call. You should delete the iterator and get a new one.
- *
- * param chain A pointer to an existing chain.
- * assert
- * code chain != NULL endcode
- */
- FLAC_API void FLAC__metadata_chain_sort_padding(FLAC__Metadata_Chain *chain);
- /*********** FLAC__Metadata_Iterator ***********/
- /** Create a new iterator instance.
- *
- * retval FLAC__Metadata_Iterator*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__Metadata_Iterator *FLAC__metadata_iterator_new();
- /** Free an iterator instance. Deletes the object pointed to by a iterator.
- *
- * param iterator A pointer to an existing iterator.
- * assert
- * code iterator != NULL endcode
- */
- FLAC_API void FLAC__metadata_iterator_delete(FLAC__Metadata_Iterator *iterator);
- /** Initialize the iterator to point to the first metadata block in the
- * given chain.
- *
- * param iterator A pointer to an existing iterator.
- * param chain A pointer to an existing and initialized (read) chain.
- * assert
- * code iterator != NULL endcode
- * code chain != NULL endcode
- */
- FLAC_API void FLAC__metadata_iterator_init(FLAC__Metadata_Iterator *iterator, FLAC__Metadata_Chain *chain);
- /** Moves the iterator forward one metadata block, returning c false if
- * already at the end.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__bool
- * c false if already at the last metadata block of the chain, else
- * c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_next(FLAC__Metadata_Iterator *iterator);
- /** Moves the iterator backward one metadata block, returning c false if
- * already at the beginning.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__bool
- * c false if already at the first metadata block of the chain, else
- * c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_prev(FLAC__Metadata_Iterator *iterator);
- /** Get the type of the metadata block at the current position.
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__MetadataType
- * The type of the metadata block at the current iterator position.
- */
- FLAC_API FLAC__MetadataType FLAC__metadata_iterator_get_block_type(const FLAC__Metadata_Iterator *iterator);
- /** Get the metadata block at the current position. You can modify
- * the block in place but must write the chain before the changes
- * are reflected to the FLAC file. You do not need to call
- * FLAC__metadata_iterator_set_block() to reflect the changes;
- * the pointer returned by FLAC__metadata_iterator_get_block()
- * points directly into the chain.
- *
- * warning
- * Do not call FLAC__metadata_object_delete() on the returned object;
- * to delete a block use FLAC__metadata_iterator_delete_block().
- *
- * param iterator A pointer to an existing initialized iterator.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__StreamMetadata*
- * The current metadata block.
- */
- FLAC_API FLAC__StreamMetadata *FLAC__metadata_iterator_get_block(FLAC__Metadata_Iterator *iterator);
- /** Set the metadata block at the current position, replacing the existing
- * block. The new block passed in becomes owned by the chain and it will be
- * deleted when the chain is deleted.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param block A pointer to a metadata block.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * code block != NULL endcode
- * retval FLAC__bool
- * c false if the conditions in the above description are not met, or
- * a memory allocation error occurs, otherwise c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_set_block(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block);
- /** Removes the current block from the chain. If a replace_with_padding is
- * c true, the block will instead be replaced with a padding block of equal
- * size. You can not delete the STREAMINFO block. The iterator will be
- * left pointing to the block before the one just "deleted", even if
- * a replace_with_padding is c true.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param replace_with_padding See above.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__bool
- * c false if the conditions in the above description are not met,
- * otherwise c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_delete_block(FLAC__Metadata_Iterator *iterator, FLAC__bool replace_with_padding);
- /** Insert a new block before the current block. You cannot insert a block
- * before the first STREAMINFO block. You cannot insert a STREAMINFO block
- * as there can be only one, the one that already exists at the head when you
- * read in a chain. The chain takes ownership of the new block and it will be
- * deleted when the chain is deleted. The iterator will be left pointing to
- * the new block.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param block A pointer to a metadata block to insert.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__bool
- * c false if the conditions in the above description are not met, or
- * a memory allocation error occurs, otherwise c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_before(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block);
- /** Insert a new block after the current block. You cannot insert a STREAMINFO
- * block as there can be only one, the one that already exists at the head when
- * you read in a chain. The chain takes ownership of the new block and it will
- * be deleted when the chain is deleted. The iterator will be left pointing to
- * the new block.
- *
- * param iterator A pointer to an existing initialized iterator.
- * param block A pointer to a metadata block to insert.
- * assert
- * code iterator != NULL endcode
- * a iterator has been successfully initialized with
- * FLAC__metadata_iterator_init()
- * retval FLAC__bool
- * c false if the conditions in the above description are not met, or
- * a memory allocation error occurs, otherwise c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_iterator_insert_block_after(FLAC__Metadata_Iterator *iterator, FLAC__StreamMetadata *block);
- /* } */
- /** defgroup flac_metadata_object FLAC/metadata.h: metadata object methods
- * ingroup flac_metadata
- *
- * brief
- * This module contains methods for manipulating FLAC metadata objects.
- *
- * Since many are variable length we have to be careful about the memory
- * management. We decree that all pointers to data in the object are
- * owned by the object and memory-managed by the object.
- *
- * Use the FLAC__metadata_object_new() and FLAC__metadata_object_delete()
- * functions to create all instances. When using the
- * FLAC__metadata_object_set_*() functions to set pointers to data, set
- * a copy to c true to have the function make it's own copy of the data, or
- * to c false to give the object ownership of your data. In the latter case
- * your pointer must be freeable by free() and will be free()d when the object
- * is FLAC__metadata_object_delete()d. It is legal to pass a null pointer as
- * the data pointer to a FLAC__metadata_object_set_*() function as long as
- * the length argument is 0 and the a copy argument is c false.
- *
- * The FLAC__metadata_object_new() and FLAC__metadata_object_clone() function
- * will return c NULL in the case of a memory allocation error, otherwise a new
- * object. The FLAC__metadata_object_set_*() functions return c false in the
- * case of a memory allocation error.
- *
- * We don't have the convenience of C++ here, so note that the library relies
- * on you to keep the types straight. In other words, if you pass, for
- * example, a FLAC__StreamMetadata* that represents a STREAMINFO block to
- * FLAC__metadata_object_application_set_data(), you will get an assertion
- * failure.
- *
- * For convenience the FLAC__metadata_object_vorbiscomment_*() functions
- * maintain a trailing NUL on each Vorbis comment entry. This is not counted
- * toward the length or stored in the stream, but it can make working with plain
- * comments (those that don't contain embedded-NULs in the value) easier.
- * Entries passed into these functions have trailing NULs added if missing, and
- * returned entries are guaranteed to have a trailing NUL.
- *
- * The FLAC__metadata_object_vorbiscomment_*() functions that take a Vorbis
- * comment entry/name/value will first validate that it complies with the Vorbis
- * comment specification and return false if it does not.
- *
- * There is no need to recalculate the length field on metadata blocks you
- * have modified. They will be calculated automatically before they are
- * written back to a file.
- *
- * {
- */
- /** Create a new metadata object instance of the given type.
- *
- * The object will be "empty"; i.e. values and data pointers will be c 0,
- * with the exception of FLAC__METADATA_TYPE_VORBIS_COMMENT, which will have
- * the vendor string set (but zero comments).
- *
- * Do not pass in a value greater than or equal to
- * a FLAC__METADATA_TYPE_UNDEFINED unless you really know what you're
- * doing.
- *
- * param type Type of object to create
- * retval FLAC__StreamMetadata*
- * c NULL if there was an error allocating memory or the type code is
- * greater than FLAC__MAX_METADATA_TYPE_CODE, else the new instance.
- */
- FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type);
- /** Create a copy of an existing metadata object.
- *
- * The copy is a "deep" copy, i.e. dynamically allocated data within the
- * object is also copied. The caller takes ownership of the new block and
- * is responsible for freeing it with FLAC__metadata_object_delete().
- *
- * param object Pointer to object to copy.
- * assert
- * code object != NULL endcode
- * retval FLAC__StreamMetadata*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__StreamMetadata *FLAC__metadata_object_clone(const FLAC__StreamMetadata *object);
- /** Free a metadata object. Deletes the object pointed to by a object.
- *
- * The delete is a "deep" delete, i.e. dynamically allocated data within the
- * object is also deleted.
- *
- * param object A pointer to an existing object.
- * assert
- * code object != NULL endcode
- */
- FLAC_API void FLAC__metadata_object_delete(FLAC__StreamMetadata *object);
- /** Compares two metadata objects.
- *
- * The compare is "deep", i.e. dynamically allocated data within the
- * object is also compared.
- *
- * param block1 A pointer to an existing object.
- * param block2 A pointer to an existing object.
- * assert
- * code block1 != NULL endcode
- * code block2 != NULL endcode
- * retval FLAC__bool
- * c true if objects are identical, else c false.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_is_equal(const FLAC__StreamMetadata *block1, const FLAC__StreamMetadata *block2);
- /** 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.
- *
- * param object A pointer to an existing APPLICATION 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_APPLICATION 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_application_set_data(FLAC__StreamMetadata *object, FLAC__byte *data, unsigned length, FLAC__bool copy);
- /** Resize the seekpoint array.
- *
- * If the size shrinks, elements will truncated; if it grows, new placeholder
- * points will be added to the end.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param new_num_points The desired length of the array; may be c 0.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * code (object->data.seek_table.points == NULL && object->data.seek_table.num_points == 0) ||
- * (object->data.seek_table.points != NULL && object->data.seek_table.num_points > 0) endcode
- * retval FLAC__bool
- * c false if memory allocation error, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_resize_points(FLAC__StreamMetadata *object, unsigned new_num_points);
- /** Set a seekpoint in a seektable.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param point_num Index into seekpoint array to set.
- * param point The point to set.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * code object->data.seek_table.num_points > point_num endcode
- */
- FLAC_API void FLAC__metadata_object_seektable_set_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point);
- /** Insert a seekpoint into a seektable.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param point_num Index into seekpoint array to set.
- * param point The point to set.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * code object->data.seek_table.num_points >= point_num endcode
- * retval FLAC__bool
- * c false if memory allocation error, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_insert_point(FLAC__StreamMetadata *object, unsigned point_num, FLAC__StreamMetadata_SeekPoint point);
- /** Delete a seekpoint from a seektable.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param point_num Index into seekpoint array to set.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * code object->data.seek_table.num_points > point_num endcode
- * retval FLAC__bool
- * c false if memory allocation error, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_delete_point(FLAC__StreamMetadata *object, unsigned point_num);
- /** Check a seektable to see if it conforms to the FLAC specification.
- * See the format specification for limits on the contents of the
- * seektable.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if seek table is illegal, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_is_legal(const FLAC__StreamMetadata *object);
- /** Append a number of placeholder points to the end of a seek table.
- *
- * note
- * As with the other ..._seektable_template_... functions, you should
- * call FLAC__metadata_object_seektable_template_sort() when finished
- * to make the seek table legal.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param num The number of placeholder points to append.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if memory allocation fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_placeholders(FLAC__StreamMetadata *object, unsigned num);
- /** Append a specific seek point template to the end of a seek table.
- *
- * note
- * As with the other ..._seektable_template_... functions, you should
- * call FLAC__metadata_object_seektable_template_sort() when finished
- * to make the seek table legal.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param sample_number The sample number of the seek point template.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if memory allocation fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_point(FLAC__StreamMetadata *object, FLAC__uint64 sample_number);
- /** Append specific seek point templates to the end of a seek table.
- *
- * note
- * As with the other ..._seektable_template_... functions, you should
- * call FLAC__metadata_object_seektable_template_sort() when finished
- * to make the seek table legal.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param sample_numbers An array of sample numbers for the seek points.
- * param num The number of seek point templates to append.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if memory allocation fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_points(FLAC__StreamMetadata *object, FLAC__uint64 sample_numbers[], unsigned num);
- /** Append a set of evenly-spaced seek point templates to the end of a
- * seek table.
- *
- * note
- * As with the other ..._seektable_template_... functions, you should
- * call FLAC__metadata_object_seektable_template_sort() when finished
- * to make the seek table legal.
- *
- * param object A pointer to an existing SEEKTABLE object.
- * param num The number of placeholder points to append.
- * param total_samples The total number of samples to be encoded;
- * the seekpoints will be spaced approximately
- * a total_samples / a num samples apart.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if memory allocation fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_append_spaced_points(FLAC__StreamMetadata *object, unsigned num, FLAC__uint64 total_samples);
- /** Sort a seek table's seek points according to the format specification,
- * removing duplicates.
- *
- * param object A pointer to a seek table to be sorted.
- * param compact If c false, behaves like FLAC__format_seektable_sort().
- * If c true, duplicates are deleted and the seek table is
- * shrunk appropriately; the number of placeholder points
- * present in the seek table will be the same after the call
- * as before.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_SEEKTABLE endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_seektable_template_sort(FLAC__StreamMetadata *object, FLAC__bool compact);
- /** Sets the vendor string in a VORBIS_COMMENT block.
- *
- * For convenience, a trailing NUL is added to the entry if it doesn't have
- * one already.
- *
- * If a copy is c true, a copy of the entry is stored; otherwise, the object
- * takes ownership of the c entry.entry pointer.
- *
- * note If this function returns c false, the caller still owns the
- * pointer.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param entry The entry to set the vendor string to.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code (entry.entry != NULL && entry.length > 0) ||
- * (entry.entry == NULL && entry.length == 0) endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_vendor_string(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy);
- /** Resize the comment array.
- *
- * If the size shrinks, elements will truncated; if it grows, new empty
- * fields will be added to the end.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param new_num_comments The desired length of the array; may be c 0.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code (object->data.vorbis_comment.comments == NULL && object->data.vorbis_comment.num_comments == 0) ||
- * (object->data.vorbis_comment.comments != NULL && object->data.vorbis_comment.num_comments > 0) endcode
- * retval FLAC__bool
- * c false if memory allocation fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_resize_comments(FLAC__StreamMetadata *object, unsigned new_num_comments);
- /** Sets a comment in a VORBIS_COMMENT block.
- *
- * For convenience, a trailing NUL is added to the entry if it doesn't have
- * one already.
- *
- * If a copy is c true, a copy of the entry is stored; otherwise, the object
- * takes ownership of the c entry.entry pointer.
- *
- * note If this function returns c false, the caller still owns the
- * pointer.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param comment_num Index into comment array to set.
- * param entry The entry to set the comment to.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code comment_num < object->data.vorbis_comment.num_comments endcode
- * code (entry.entry != NULL && entry.length > 0) ||
- * (entry.entry == NULL && entry.length == 0) endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_set_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy);
- /** Insert a comment in a VORBIS_COMMENT block at the given index.
- *
- * For convenience, a trailing NUL is added to the entry if it doesn't have
- * one already.
- *
- * If a copy is c true, a copy of the entry is stored; otherwise, the object
- * takes ownership of the c entry.entry pointer.
- *
- * note If this function returns c false, the caller still owns the
- * pointer.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param comment_num The index at which to insert the comment. The comments
- * at and after a comment_num move right one position.
- * To append a comment to the end, set a comment_num to
- * c object->data.vorbis_comment.num_comments .
- * param entry The comment to insert.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code object->data.vorbis_comment.num_comments >= comment_num endcode
- * code (entry.entry != NULL && entry.length > 0) ||
- * (entry.entry == NULL && entry.length == 0 && copy == false) endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_insert_comment(FLAC__StreamMetadata *object, unsigned comment_num, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy);
- /** Appends a comment to a VORBIS_COMMENT block.
- *
- * For convenience, a trailing NUL is added to the entry if it doesn't have
- * one already.
- *
- * If a copy is c true, a copy of the entry is stored; otherwise, the object
- * takes ownership of the c entry.entry pointer.
- *
- * note If this function returns c false, the caller still owns the
- * pointer.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param entry The comment to insert.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code (entry.entry != NULL && entry.length > 0) ||
- * (entry.entry == NULL && entry.length == 0 && copy == false) endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_append_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool copy);
- /** Replaces comments in a VORBIS_COMMENT block with a new one.
- *
- * For convenience, a trailing NUL is added to the entry if it doesn't have
- * one already.
- *
- * Depending on the the value of a all, either all or just the first comment
- * whose field name(s) match the given entry's name will be replaced by the
- * given entry. If no comments match, a entry will simply be appended.
- *
- * If a copy is c true, a copy of the entry is stored; otherwise, the object
- * takes ownership of the c entry.entry pointer.
- *
- * note If this function returns c false, the caller still owns the
- * pointer.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param entry The comment to insert.
- * param all If c true, all comments whose field name matches
- * a entry's field name will be removed, and a entry will
- * be inserted at the position of the first matching
- * comment. If c false, only the first comment whose
- * field name matches a entry's field name will be
- * replaced with a entry.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code (entry.entry != NULL && entry.length > 0) ||
- * (entry.entry == NULL && entry.length == 0 && copy == false) endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_replace_comment(FLAC__StreamMetadata *object, FLAC__StreamMetadata_VorbisComment_Entry entry, FLAC__bool all, FLAC__bool copy);
- /** Delete a comment in a VORBIS_COMMENT block at the given index.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param comment_num The index of the comment to delete.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code object->data.vorbis_comment.num_comments > comment_num endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_delete_comment(FLAC__StreamMetadata *object, unsigned comment_num);
- /** Creates a Vorbis comment entry from NUL-terminated name and value strings.
- *
- * On return, the filled-in a entry->entry pointer will point to malloc()ed
- * memory and shall be owned by the caller. For convenience the entry will
- * have a terminating NUL.
- *
- * param entry A pointer to a Vorbis comment entry. The entry's
- * c entry pointer should not point to allocated
- * memory as it will be overwritten.
- * param field_name The field name in ASCII, c NUL terminated.
- * param field_value The field value in UTF-8, c NUL terminated.
- * assert
- * code entry != NULL endcode
- * code field_name != NULL endcode
- * code field_value != NULL endcode
- * retval FLAC__bool
- * c false if malloc() fails, or if a field_name or a field_value does
- * not comply with the Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(FLAC__StreamMetadata_VorbisComment_Entry *entry, const char *field_name, const char *field_value);
- /** Splits a Vorbis comment entry into NUL-terminated name and value strings.
- *
- * The returned pointers to name and value will be allocated by malloc()
- * and shall be owned by the caller.
- *
- * param entry An existing Vorbis comment entry.
- * param field_name The address of where the returned pointer to the
- * field name will be stored.
- * param field_value The address of where the returned pointer to the
- * field value will be stored.
- * assert
- * code (entry.entry != NULL && entry.length > 0) endcode
- * code memchr(entry.entry, '=', entry.length) != NULL endcode
- * code field_name != NULL endcode
- * code field_value != NULL endcode
- * retval FLAC__bool
- * c false if memory allocation fails or a entry does not comply with the
- * Vorbis comment specification, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_to_name_value_pair(const FLAC__StreamMetadata_VorbisComment_Entry entry, char **field_name, char **field_value);
- /** Check if the given Vorbis comment entry's field name matches the given
- * field name.
- *
- * param entry An existing Vorbis comment entry.
- * param field_name The field name to check.
- * param field_name_length The length of a field_name, not including the
- * terminating c NUL.
- * assert
- * code (entry.entry != NULL && entry.length > 0) endcode
- * retval FLAC__bool
- * c true if the field names match, else c false
- */
- FLAC_API FLAC__bool FLAC__metadata_object_vorbiscomment_entry_matches(const FLAC__StreamMetadata_VorbisComment_Entry entry, const char *field_name, unsigned field_name_length);
- /** Find a Vorbis comment with the given field name.
- *
- * The search begins at entry number a offset; use an offset of 0 to
- * search from the beginning of the comment array.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param offset The offset into the comment array from where to start
- * the search.
- * param field_name The field name of the comment to find.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * code field_name != NULL endcode
- * retval int
- * The offset in the comment array of the first comment whose field
- * name matches a field_name, or c -1 if no match was found.
- */
- FLAC_API int FLAC__metadata_object_vorbiscomment_find_entry_from(const FLAC__StreamMetadata *object, unsigned offset, const char *field_name);
- /** Remove first Vorbis comment matching the given field name.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param field_name The field name of comment to delete.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * retval int
- * c -1 for memory allocation error, c 0 for no matching entries,
- * c 1 for one matching entry deleted.
- */
- FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entry_matching(FLAC__StreamMetadata *object, const char *field_name);
- /** Remove all Vorbis comments matching the given field name.
- *
- * param object A pointer to an existing VORBIS_COMMENT object.
- * param field_name The field name of comments to delete.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT endcode
- * retval int
- * c -1 for memory allocation error, c 0 for no matching entries,
- * else the number of matching entries deleted.
- */
- FLAC_API int FLAC__metadata_object_vorbiscomment_remove_entries_matching(FLAC__StreamMetadata *object, const char *field_name);
- /** Create a new CUESHEET track instance.
- *
- * The object will be "empty"; i.e. values and data pointers will be c 0.
- *
- * retval FLAC__StreamMetadata_CueSheet_Track*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_new();
- /** Create a copy of an existing CUESHEET track object.
- *
- * The copy is a "deep" copy, i.e. dynamically allocated data within the
- * object is also copied. The caller takes ownership of the new object and
- * is responsible for freeing it with
- * FLAC__metadata_object_cuesheet_track_delete().
- *
- * param object Pointer to object to copy.
- * assert
- * code object != NULL endcode
- * retval FLAC__StreamMetadata_CueSheet_Track*
- * c NULL if there was an error allocating memory, else the new instance.
- */
- FLAC_API FLAC__StreamMetadata_CueSheet_Track *FLAC__metadata_object_cuesheet_track_clone(const FLAC__StreamMetadata_CueSheet_Track *object);
- /** Delete a CUESHEET track object
- *
- * param object A pointer to an existing CUESHEET track object.
- * assert
- * code object != NULL endcode
- */
- FLAC_API void FLAC__metadata_object_cuesheet_track_delete(FLAC__StreamMetadata_CueSheet_Track *object);
- /** Resize a track's index point array.
- *
- * If the size shrinks, elements will truncated; if it grows, new blank
- * indices will be added to the end.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index of the track to modify. NOTE: this is not
- * necessarily the same as the track's a number field.
- * param new_num_indices The desired length of the array; may be c 0.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks > track_num endcode
- * code (object->data.cue_sheet.tracks[track_num].indices == NULL && object->data.cue_sheet.tracks[track_num].num_indices == 0) ||
- * (object->data.cue_sheet.tracks[track_num].indices != NULL && object->data.cue_sheet.tracks[track_num].num_indices > 0) endcode
- * retval FLAC__bool
- * c false if memory allocation error, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_resize_indices(FLAC__StreamMetadata *object, unsigned track_num, unsigned new_num_indices);
- /** Insert an index point in a CUESHEET track at the given index.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index of the track to modify. NOTE: this is not
- * necessarily the same as the track's a number field.
- * param index_num The index into the track's index array at which to
- * insert the index point. NOTE: this is not necessarily
- * the same as the index point's a number field. The
- * indices at and after a index_num move right one
- * position. To append an index point to the end, set
- * a index_num to
- * c object->data.cue_sheet.tracks[track_num].num_indices .
- * param index The index point to insert.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks > track_num endcode
- * code object->data.cue_sheet.tracks[track_num].num_indices >= index_num endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num, FLAC__StreamMetadata_CueSheet_Index index);
- /** Insert a blank index point in a CUESHEET track at the given index.
- *
- * A blank index point is one in which all field values are zero.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index of the track to modify. NOTE: this is not
- * necessarily the same as the track's a number field.
- * param index_num The index into the track's index array at which to
- * insert the index point. NOTE: this is not necessarily
- * the same as the index point's a number field. The
- * indices at and after a index_num move right one
- * position. To append an index point to the end, set
- * a index_num to
- * c object->data.cue_sheet.tracks[track_num].num_indices .
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks > track_num endcode
- * code object->data.cue_sheet.tracks[track_num].num_indices >= index_num endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_insert_blank_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num);
- /** Delete an index point in a CUESHEET track at the given index.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index into the track array of the track to
- * modify. NOTE: this is not necessarily the same
- * as the track's a number field.
- * param index_num The index into the track's index array of the index
- * to delete. NOTE: this is not necessarily the same
- * as the index's a number field.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks > track_num endcode
- * code object->data.cue_sheet.tracks[track_num].num_indices > index_num endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_track_delete_index(FLAC__StreamMetadata *object, unsigned track_num, unsigned index_num);
- /** Resize the track array.
- *
- * If the size shrinks, elements will truncated; if it grows, new blank
- * tracks will be added to the end.
- *
- * param object A pointer to an existing CUESHEET object.
- * param new_num_tracks The desired length of the array; may be c 0.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code (object->data.cue_sheet.tracks == NULL && object->data.cue_sheet.num_tracks == 0) ||
- * (object->data.cue_sheet.tracks != NULL && object->data.cue_sheet.num_tracks > 0) endcode
- * retval FLAC__bool
- * c false if memory allocation error, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_resize_tracks(FLAC__StreamMetadata *object, unsigned new_num_tracks);
- /** Sets a track in a CUESHEET block.
- *
- * If a copy is c true, a copy of the track is stored; otherwise, the object
- * takes ownership of the a track pointer.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num Index into track array to set. NOTE: this is not
- * necessarily the same as the track's a number field.
- * param track The track to set the track to. You may safely pass in
- * a const pointer if a copy is c true.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code track_num < object->data.cue_sheet.num_tracks endcode
- * code (track->indices != NULL && track->num_indices > 0) ||
- * (track->indices == NULL && track->num_indices == 0)
- * retval FLAC__bool
- * c false if a copy is c true and malloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_set_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy);
- /** Insert a track in a CUESHEET block at the given index.
- *
- * If a copy is c true, a copy of the track is stored; otherwise, the object
- * takes ownership of the a track pointer.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index at which to insert the track. NOTE: this
- * is not necessarily the same as the track's a number
- * field. The tracks at and after a track_num move right
- * one position. To append a track to the end, set
- * a track_num to c object->data.cue_sheet.num_tracks .
- * param track The track to insert. You may safely pass in a const
- * pointer if a copy is c true.
- * param copy See above.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks >= track_num 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_cuesheet_insert_track(FLAC__StreamMetadata *object, unsigned track_num, FLAC__StreamMetadata_CueSheet_Track *track, FLAC__bool copy);
- /** Insert a blank track in a CUESHEET block at the given index.
- *
- * A blank track is one in which all field values are zero.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index at which to insert the track. NOTE: this
- * is not necessarily the same as the track's a number
- * field. The tracks at and after a track_num move right
- * one position. To append a track to the end, set
- * a track_num to c object->data.cue_sheet.num_tracks .
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks >= track_num 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_cuesheet_insert_blank_track(FLAC__StreamMetadata *object, unsigned track_num);
- /** Delete a track in a CUESHEET block at the given index.
- *
- * param object A pointer to an existing CUESHEET object.
- * param track_num The index into the track array of the track to
- * delete. NOTE: this is not necessarily the same
- * as the track's a number field.
- * assert
- * code object != NULL endcode
- * code object->type == FLAC__METADATA_TYPE_CUESHEET endcode
- * code object->data.cue_sheet.num_tracks > track_num endcode
- * retval FLAC__bool
- * c false if realloc() fails, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_delete_track(FLAC__StreamMetadata *object, unsigned track_num);
- /** Check a cue sheet to see if it conforms to the FLAC specification.
- * See the format specification for limits on the contents of the
- * cue sheet.
- *
- * param object A pointer to an existing CUESHEET object.
- * param check_cd_da_subset If c true, check CUESHEET against more
- * stringent requirements for a CD-DA (audio) disc.
- * 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_CUESHEET endcode
- * retval FLAC__bool
- * c false if cue sheet is illegal, else c true.
- */
- FLAC_API FLAC__bool FLAC__metadata_object_cuesheet_is_legal(const FLAC__StreamMetadata *object, FLAC__bool check_cd_da_subset, const char **violation);
- /* } */
- #ifdef __cplusplus
- }
- #endif
- #endif