seekable_stream_decoder.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) 2000,2001,2002,2003,2004,2005 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__SEEKABLE_STREAM_DECODER_H
- #define FLAC__SEEKABLE_STREAM_DECODER_H
- #include "export.h"
- #include "stream_decoder.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- /** file include/FLAC/seekable_stream_decoder.h
- *
- * brief
- * This module contains the functions which implement the seekable stream
- * decoder.
- *
- * See the detailed documentation in the
- * link flac_seekable_stream_decoder seekable stream decoder endlink module.
- */
- /** defgroup flac_seekable_stream_decoder FLAC/seekable_stream_decoder.h: seekable stream decoder interface
- * ingroup flac_decoder
- *
- * brief
- * This module contains the functions which implement the seekable stream
- * decoder.
- *
- * The basic usage of this decoder is as follows:
- * - The program creates an instance of a decoder using
- * FLAC__seekable_stream_decoder_new().
- * - The program overrides the default settings and sets callbacks for
- * reading, writing, seeking, error reporting, and metadata reporting
- * using FLAC__seekable_stream_decoder_set_*() functions.
- * - The program initializes the instance to validate the settings and
- * prepare for decoding using FLAC__seekable_stream_decoder_init().
- * - The program calls the FLAC__seekable_stream_decoder_process_*()
- * functions to decode data, which subsequently calls the callbacks.
- * - The program finishes the decoding with
- * FLAC__seekable_stream_decoder_finish(), which flushes the input and
- * output and resets the decoder to the uninitialized state.
- * - The instance may be used again or deleted with
- * FLAC__seekable_stream_decoder_delete().
- *
- * The seekable stream decoder is a wrapper around the
- * link flac_stream_decoder stream decoder endlink which also provides
- * seeking capability. In addition to the Read/Write/Metadata/Error
- * callbacks of the stream decoder, the user must also provide the following:
- *
- * - Seek callback - This function will be called when the decoder wants to
- * seek to an absolute position in the stream.
- * - Tell callback - This function will be called when the decoder wants to
- * know the current absolute position of the stream.
- * - Length callback - This function will be called when the decoder wants
- * to know length of the stream. The seeking algorithm currently requires
- * that the overall stream length be known.
- * - EOF callback - This function will be called when the decoder wants to
- * know if it is at the end of the stream. This could be synthesized from
- * the tell and length callbacks but it may be more expensive that way, so
- * there is a separate callback for it.
- *
- * Seeking is exposed through the
- * FLAC__seekable_stream_decoder_seek_absolute() method. At any point after
- * the seekable stream decoder has been initialized, the user can call this
- * function to seek to an exact sample within the stream. Subsequently, the
- * first time the write callback is called it will be passed a (possibly
- * partial) block starting at that sample.
- *
- * The seekable stream decoder also provides MD5 signature checking. If
- * this is turned on before initialization,
- * FLAC__seekable_stream_decoder_finish() will report when the decoded MD5
- * signature does not match the one stored in the STREAMINFO block. MD5
- * checking is automatically 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.
- *
- * Make sure to read the detailed description of the
- * link flac_stream_decoder stream decoder module endlink since the
- * seekable stream decoder inherits much of its behavior.
- *
- * note
- * The "set" functions may only be called when the decoder is in the
- * state FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED, i.e. after
- * FLAC__seekable_stream_decoder_new() or
- * FLAC__seekable_stream_decoder_finish(), but before
- * FLAC__seekable_stream_decoder_init(). If this is the case they will
- * return c true, otherwise c false.
- *
- * note
- * FLAC__stream_decoder_finish() resets all settings to the constructor
- * defaults, including the callbacks.
- *
- * {
- */
- /** State values for a FLAC__SeekableStreamDecoder
- *
- * The decoder's state can be obtained by calling FLAC__seekable_stream_decoder_get_state().
- */
- typedef enum {
- FLAC__SEEKABLE_STREAM_DECODER_OK = 0,
- /**< The decoder is in the normal OK state. */
- FLAC__SEEKABLE_STREAM_DECODER_SEEKING,
- /**< The decoder is in the process of seeking. */
- FLAC__SEEKABLE_STREAM_DECODER_END_OF_STREAM,
- /**< The decoder has reached the end of the stream. */
- FLAC__SEEKABLE_STREAM_DECODER_MEMORY_ALLOCATION_ERROR,
- /**< An error occurred allocating memory. */
- FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR,
- /**< An error occurred in the underlying stream decoder. */
- FLAC__SEEKABLE_STREAM_DECODER_READ_ERROR,
- /**< The read callback returned an error. */
- FLAC__SEEKABLE_STREAM_DECODER_SEEK_ERROR,
- /**< An error occurred while seeking or the seek or tell
- * callback returned an error.
- */
- FLAC__SEEKABLE_STREAM_DECODER_ALREADY_INITIALIZED,
- /**< FLAC__seekable_stream_decoder_init() was called when the
- * decoder was already initialized, usually because
- * FLAC__seekable_stream_decoder_finish() was not called.
- */
- FLAC__SEEKABLE_STREAM_DECODER_INVALID_CALLBACK,
- /**< FLAC__seekable_stream_decoder_init() was called without all
- * callbacks being set.
- */
- FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED
- /**< The decoder is in the uninitialized state. */
- } FLAC__SeekableStreamDecoderState;
- /** Maps a FLAC__SeekableStreamDecoderState to a C string.
- *
- * Using a FLAC__SeekableStreamDecoderState as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__SeekableStreamDecoderStateString[];
- /** Return values for the FLAC__SeekableStreamDecoder read callback.
- */
- typedef enum {
- FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_OK,
- /**< The read was OK and decoding can continue. */
- FLAC__SEEKABLE_STREAM_DECODER_READ_STATUS_ERROR
- /**< An unrecoverable error occurred. The decoder will return from the process call. */
- } FLAC__SeekableStreamDecoderReadStatus;
- /** Maps a FLAC__SeekableStreamDecoderReadStatus to a C string.
- *
- * Using a FLAC__SeekableStreamDecoderReadStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__SeekableStreamDecoderReadStatusString[];
- /** Return values for the FLAC__SeekableStreamDecoder seek callback.
- */
- typedef enum {
- FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_OK,
- /**< The seek was OK and decoding can continue. */
- FLAC__SEEKABLE_STREAM_DECODER_SEEK_STATUS_ERROR
- /**< An unrecoverable error occurred. The decoder will return from the process call. */
- } FLAC__SeekableStreamDecoderSeekStatus;
- /** Maps a FLAC__SeekableStreamDecoderSeekStatus to a C string.
- *
- * Using a FLAC__SeekableStreamDecoderSeekStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__SeekableStreamDecoderSeekStatusString[];
- /** Return values for the FLAC__SeekableStreamDecoder tell callback.
- */
- typedef enum {
- FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_OK,
- /**< The tell was OK and decoding can continue. */
- FLAC__SEEKABLE_STREAM_DECODER_TELL_STATUS_ERROR
- /**< An unrecoverable error occurred. The decoder will return from the process call. */
- } FLAC__SeekableStreamDecoderTellStatus;
- /** Maps a FLAC__SeekableStreamDecoderTellStatus to a C string.
- *
- * Using a FLAC__SeekableStreamDecoderTellStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__SeekableStreamDecoderTellStatusString[];
- /** Return values for the FLAC__SeekableStreamDecoder length callback.
- */
- typedef enum {
- FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_OK,
- /**< The length call was OK and decoding can continue. */
- FLAC__SEEKABLE_STREAM_DECODER_LENGTH_STATUS_ERROR
- /**< An unrecoverable error occurred. The decoder will return from the process call. */
- } FLAC__SeekableStreamDecoderLengthStatus;
- /** Maps a FLAC__SeekableStreamDecoderLengthStatus to a C string.
- *
- * Using a FLAC__SeekableStreamDecoderLengthStatus as the index to this array
- * will give the string equivalent. The contents should not be modified.
- */
- extern FLAC_API const char * const FLAC__SeekableStreamDecoderLengthStatusString[];
- /***********************************************************************
- *
- * class FLAC__SeekableStreamDecoder : public FLAC__StreamDecoder
- *
- ***********************************************************************/
- struct FLAC__SeekableStreamDecoderProtected;
- struct FLAC__SeekableStreamDecoderPrivate;
- /** The opaque structure definition for the seekable stream decoder type.
- * See the
- * link flac_seekable_stream_decoder seekable stream decoder module endlink
- * for a detailed description.
- */
- typedef struct {
- struct FLAC__SeekableStreamDecoderProtected *protected_; /* avoid the C++ keyword 'protected' */
- struct FLAC__SeekableStreamDecoderPrivate *private_; /* avoid the C++ keyword 'private' */
- } FLAC__SeekableStreamDecoder;
- /** Signature for the read callback.
- * See FLAC__seekable_stream_decoder_set_read_callback()
- * and FLAC__StreamDecoderReadCallback for more info.
- *
- * param decoder The decoder instance calling the callback.
- * param buffer A pointer to a location for the callee to store
- * data to be decoded.
- * param bytes A pointer to the size of the buffer.
- * param client_data The callee's client data set through
- * FLAC__seekable_stream_decoder_set_client_data().
- * retval FLAC__SeekableStreamDecoderReadStatus
- * The callee's return status.
- */
- typedef FLAC__SeekableStreamDecoderReadStatus (*FLAC__SeekableStreamDecoderReadCallback)(const FLAC__SeekableStreamDecoder *decoder, FLAC__byte buffer[], unsigned *bytes, void *client_data);
- /** Signature for the seek callback.
- * See FLAC__seekable_stream_decoder_set_seek_callback() for more info.
- *
- * param decoder The decoder instance calling the callback.
- * param absolute_byte_offset The offset from the beginning of the stream
- * to seek to.
- * param client_data The callee's client data set through
- * FLAC__seekable_stream_decoder_set_client_data().
- * retval FLAC__SeekableStreamDecoderSeekStatus
- * The callee's return status.
- */
- typedef FLAC__SeekableStreamDecoderSeekStatus (*FLAC__SeekableStreamDecoderSeekCallback)(const FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 absolute_byte_offset, void *client_data);
- /** Signature for the tell callback.
- * See FLAC__seekable_stream_decoder_set_tell_callback() for more info.
- *
- * param decoder The decoder instance calling the callback.
- * param absolute_byte_offset A pointer to storage for the current offset
- * 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().
- *
- * default By default, only the c STREAMINFO block is returned via the
- * metadata callback.
- * param decoder A decoder instance to set.
- * 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_metadata_respond_all(FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_set_metadata_ignore().
- *
- * 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_ignore(FLAC__SeekableStreamDecoder *decoder, FLAC__MetadataType type);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_set_metadata_ignore_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_ignore_application(FLAC__SeekableStreamDecoder *decoder, const FLAC__byte id[4]);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_set_metadata_ignore_all().
- *
- * default By default, only the c STREAMINFO block is returned via the
- * metadata callback.
- * param decoder A decoder instance to set.
- * 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_metadata_ignore_all(FLAC__SeekableStreamDecoder *decoder);
- /** Get the current decoder state.
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__SeekableStreamDecoderState
- * The current decoder state.
- */
- FLAC_API FLAC__SeekableStreamDecoderState FLAC__seekable_stream_decoder_get_state(const FLAC__SeekableStreamDecoder *decoder);
- /** Get the state of the underlying stream decoder.
- * Useful when the seekable stream decoder state is
- * c FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR.
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__StreamDecoderState
- * The stream decoder state.
- */
- FLAC_API FLAC__StreamDecoderState FLAC__seekable_stream_decoder_get_stream_decoder_state(const FLAC__SeekableStreamDecoder *decoder);
- /** Get the current decoder state as a C string.
- * This version automatically resolves
- * c FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR by getting the
- * stream decoder's state.
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval const char *
- * The decoder state as a C string. Do not modify the contents.
- */
- FLAC_API const char *FLAC__seekable_stream_decoder_get_resolved_state_string(const FLAC__SeekableStreamDecoder *decoder);
- /** Get the "MD5 signature checking" flag.
- * This is the value of the setting, not whether or not the decoder is
- * currently checking the MD5 (remember, it can be turned off automatically
- * by a seek). When the decoder is reset the flag will be restored to the
- * value returned by this function.
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_get_md5_checking(const FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_get_channels().
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval unsigned
- * See above.
- */
- FLAC_API unsigned FLAC__seekable_stream_decoder_get_channels(const FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_get_channel_assignment().
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__ChannelAssignment
- * See above.
- */
- FLAC_API FLAC__ChannelAssignment FLAC__seekable_stream_decoder_get_channel_assignment(const FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_get_bits_per_sample().
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval unsigned
- * See above.
- */
- FLAC_API unsigned FLAC__seekable_stream_decoder_get_bits_per_sample(const FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_get_sample_rate().
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval unsigned
- * See above.
- */
- FLAC_API unsigned FLAC__seekable_stream_decoder_get_sample_rate(const FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_get_blocksize().
- *
- * param decoder A decoder instance to query.
- * assert
- * code decoder != NULL endcode
- * retval unsigned
- * See above.
- */
- FLAC_API unsigned FLAC__seekable_stream_decoder_get_blocksize(const FLAC__SeekableStreamDecoder *decoder);
- /** Returns the decoder's current read position within the stream.
- * The position is the byte offset from the start of the stream.
- * Bytes before this position have been fully decoded. Note that
- * there may still be undecoded bytes in the decoder's read FIFO.
- * The returned position is correct even after a seek.
- *
- * param decoder A decoder instance to query.
- * param position Address at which to return the desired position.
- * assert
- * code decoder != NULL endcode
- * code position != NULL endcode
- * retval FLAC__bool
- * c true if successful, c false if there was an error from
- * the 'tell' callback.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_get_decode_position(const FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 *position);
- /** Initialize the decoder instance.
- * Should be called after FLAC__seekable_stream_decoder_new() and
- * FLAC__seekable_stream_decoder_set_*() but before any of the
- * FLAC__seekable_stream_decoder_process_*() functions. Will set and return
- * the decoder state, which will be FLAC__SEEKABLE_STREAM_DECODER_OK
- * if initialization succeeded.
- *
- * param decoder An uninitialized decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__SeekableStreamDecoderState
- * c FLAC__SEEKABLE_STREAM_DECODER_OK if initialization was
- * successful; see FLAC__SeekableStreamDecoderState for the meanings
- * of other return values.
- */
- FLAC_API FLAC__SeekableStreamDecoderState FLAC__seekable_stream_decoder_init(FLAC__SeekableStreamDecoder *decoder);
- /** Finish the decoding process.
- * Flushes the decoding buffer, releases resources, resets the decoder
- * settings to their defaults, and returns the decoder state to
- * FLAC__SEEKABLE_STREAM_DECODER_UNINITIALIZED.
- *
- * In the event of a prematurely-terminated decode, it is not strictly
- * necessary to call this immediately before
- * FLAC__seekable_stream_decoder_delete() but it is good practice to match
- * every FLAC__seekable_stream_decoder_init() with a
- * FLAC__seekable_stream_decoder_finish().
- *
- * param decoder An uninitialized decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * c false if MD5 checking is on AND a STREAMINFO block was available
- * AND the MD5 signature in the STREAMINFO block was non-zero AND the
- * signature does not match the one computed by the decoder; else
- * c true.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_finish(FLAC__SeekableStreamDecoder *decoder);
- /** Flush the stream input.
- * The decoder's input buffer will be cleared and the state set to
- * c FLAC__SEEKABLE_STREAM_DECODER_OK. This will also turn off MD5
- * checking.
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * c true if successful, else c false if a memory allocation
- * or stream decoder error occurs.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_flush(FLAC__SeekableStreamDecoder *decoder);
- /** Reset the decoding process.
- * The decoder's input buffer will be cleared and the state set to
- * c FLAC__SEEKABLE_STREAM_DECODER_OK. This is similar to
- * FLAC__seekable_stream_decoder_finish() except that the settings are
- * preserved; there is no need to call FLAC__seekable_stream_decoder_init()
- * before decoding again. MD5 checking will be restored to its original
- * setting.
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * c true if successful, else c false if a memory allocation
- * or stream decoder error occurs.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_reset(FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_process_single().
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_process_single(FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_process_until_end_of_metadata().
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_process_until_end_of_metadata(FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_process_until_end_of_stream().
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_process_until_end_of_stream(FLAC__SeekableStreamDecoder *decoder);
- /** This is inherited from FLAC__StreamDecoder; see
- * FLAC__stream_decoder_skip_single_frame().
- *
- * param decoder A decoder instance.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * See above.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_skip_single_frame(FLAC__SeekableStreamDecoder *decoder);
- /** Flush the input and seek to an absolute sample.
- * Decoding will resume at the given sample. Note that because of
- * this, the next write callback may contain a partial block.
- *
- * param decoder A decoder instance.
- * param sample The target sample number to seek to.
- * assert
- * code decoder != NULL endcode
- * retval FLAC__bool
- * c true if successful, else c false.
- */
- FLAC_API FLAC__bool FLAC__seekable_stream_decoder_seek_absolute(FLAC__SeekableStreamDecoder *decoder, FLAC__uint64 sample);
- /* } */
- #ifdef __cplusplus
- }
- #endif
- #endif