seekable_stream_decoder.h

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 *                               from the beginning of the stream.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 * \retval FLAC__SeekableStreamDecoderTellStatus
 *    The callee's return status.
 */
typedef FLAC__SeekableStreamDecoderTellStatus (*FLAC__SeekableStreamDecoderTellCallback)(const FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *absolute_byte_offset, void *client_data);

/** Signature for the length callback.
 *  See FLAC__seekable_stream_decoder_set_length_callback() for more info.
 *
 * \param  decoder  The decoder instance calling the callback.
 * \param  stream_length  A pointer to storage for the length of the stream
 *                        in bytes.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 * \retval FLAC__SeekableStreamDecoderLengthStatus
 *    The callee's return status.
 */
typedef FLAC__SeekableStreamDecoderLengthStatus (*FLAC__SeekableStreamDecoderLengthCallback)(const FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *stream_length, void *client_data);

/** Signature for the EOF callback.
 *  See FLAC__seekable_stream_decoder_set_eof_callback() for more info.
 *
 * \param  decoder  The decoder instance calling the callback.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 * \retval FLAC__bool
 *    \c true if the currently at the end of the stream, else \c false.
 */
typedef FLAC__bool (*FLAC__SeekableStreamDecoderEofCallback)(const FLAC__SeekableStreamDecoder *decoder, void *client_data);

/** Signature for the write callback.
 *  See FLAC__seekable_stream_decoder_set_write_callback()
 *  and FLAC__StreamDecoderWriteCallback for more info.
 *
 * \param  decoder  The decoder instance calling the callback.
 * \param  frame    The description of the decoded frame.
 * \param  buffer   An array of pointers to decoded channels of data.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 * \retval FLAC__StreamDecoderWriteStatus
 *    The callee's return status.
 */
typedef FLAC__StreamDecoderWriteStatus (*FLAC__SeekableStreamDecoderWriteCallback)(const FLAC__SeekableStreamDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);

/** Signature for the metadata callback.
 *  See FLAC__seekable_stream_decoder_set_metadata_callback()
 *  and FLAC__StreamDecoderMetadataCallback for more info.
 *
 * \param  decoder  The decoder instance calling the callback.
 * \param  metadata The decoded metadata block.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 */
typedef void (*FLAC__SeekableStreamDecoderMetadataCallback)(const FLAC__SeekableStreamDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);

/** Signature for the error callback.
 *  See FLAC__seekable_stream_decoder_set_error_callback()
 *  and FLAC__StreamDecoderErrorCallback for more info.
 *
 * \param  decoder  The decoder instance calling the callback.
 * \param  status   The error encountered by the decoder.
 * \param  client_data  The callee's client data set through
 *                      FLAC__seekable_stream_decoder_set_client_data().
 */
typedef void (*FLAC__SeekableStreamDecoderErrorCallback)(const FLAC__SeekableStreamDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);


/***********************************************************************
 *
 * Class constructor/destructor
 *
 ***********************************************************************/

/** Create a new seekable stream decoder instance.  The instance is created
 *  with default settings; see the individual
 *  FLAC__seekable_stream_decoder_set_*() functions for each setting's
 *  default.
 *
 * \retval FLAC__SeekableStreamDecoder*
 *    \c NULL if there was an error allocating memory, else the new instance.
 */
FLAC_API FLAC__SeekableStreamDecoder *FLAC__seekable_stream_decoder_new();

/** Free a decoder instance.  Deletes the object pointed to by \a decoder.
 *
 * \param decoder  A pointer to an existing decoder.
 * \assert
 *    \code decoder != NULL \endcode
 */
FLAC_API void FLAC__seekable_stream_decoder_delete(FLAC__SeekableStreamDecoder *decoder);


/***********************************************************************
 *
 * Public class method prototypes
 *
 ***********************************************************************/

/** Set the "MD5 signature checking" flag.  If \c true, the decoder will
 *  compute the MD5 signature of the unencoded audio data while decoding
 *  and compare it to the signature from the STREAMINFO block, if it
 *  exists, during FLAC__seekable_stream_decoder_finish().
 *
 *  MD5 signature checking will be turned off (until the next
 *  FLAC__seekable_stream_decoder_reset()) if there is no signature in
 *  the STREAMINFO block or when a seek is attempted.
 *
 * \default \c false
 * \param  decoder  A decoder instance to set.
 * \param  value    Flag value (see above).
 * \assert
 *    \code decoder != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_md5_checking(FLAC__SeekableStreamDecoder *decoder, FLAC__bool value);

/** Set the read callback.
 *  This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_read_callback().
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_read_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderReadCallback value);

/** Set the seek callback.
 *  The supplied function will be called when the decoder needs to seek
 *  the input stream.  The decoder will pass the absolute byte offset
 *  to seek to, 0 meaning the beginning of the stream.
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_seek_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderSeekCallback value);

/** Set the tell callback.
 *  The supplied function will be called when the decoder wants to know
 *  the current position of the stream.  The callback should return the
 *  byte offset from the beginning of the stream.
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_tell_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderTellCallback value);

/** Set the length callback.
 *  The supplied function will be called when the decoder wants to know
 *  the total length of the stream in bytes.
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_length_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderLengthCallback value);

/** Set the eof callback.
 *  The supplied function will be called when the decoder needs to know
 *  if the end of the stream has been reached.
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_eof_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderEofCallback value);

/** Set the write callback.
 *  This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_write_callback().
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_write_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderWriteCallback value);

/** Set the metadata callback.
 *  This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_metadata_callback().
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_metadata_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderMetadataCallback value);

/** Set the error callback.
 *  This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_error_callback().
 *
 * \note
 * The callback is mandatory and must be set before initialization.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code value != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_error_callback(FLAC__SeekableStreamDecoder *decoder, FLAC__SeekableStreamDecoderErrorCallback value);

/** Set the client data to be passed back to callbacks.
 *  This value will be supplied to callbacks in their \a client_data
 *  argument.
 *
 * \default \c NULL
 * \param  decoder  A decoder instance to set.
 * \param  value    See above.
 * \assert
 *    \code decoder != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_client_data(FLAC__SeekableStreamDecoder *decoder, void *value);

/** This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_metadata_respond().
 *
 * \default By default, only the \c STREAMINFO block is returned via the
 *          metadata callback.
 * \param  decoder  A decoder instance to set.
 * \param  type     See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \a type is valid
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_metadata_respond(FLAC__SeekableStreamDecoder *decoder, FLAC__MetadataType type);

/** This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_metadata_respond_application().
 *
 * \default By default, only the \c STREAMINFO block is returned via the
 *          metadata callback.
 * \param  decoder  A decoder instance to set.
 * \param  id       See above.
 * \assert
 *    \code decoder != NULL \endcode
 *    \code id != NULL \endcode
 * \retval FLAC__bool
 *    \c false if the decoder is already initialized, else \c true.
 */
FLAC_API FLAC__bool FLAC__seekable_stream_decoder_set_metadata_respond_application(FLAC__SeekableStreamDecoder *decoder, const FLAC__byte id[4]);

/** This is inherited from FLAC__StreamDecoder; see
 *  FLAC__stream_decoder_set_metadata_respond_all().