561 lines
20 KiB
C
561 lines
20 KiB
C
/* libOggFLAC - Free Lossless Audio Codec + Ogg library
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* Copyright (C) 2002,2003 Josh Coalson
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* - Neither the name of the Xiph.org Foundation nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef OggFLAC__FILE_DECODER_H
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#define OggFLAC__FILE_DECODER_H
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#include "export.h"
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#include "FLAC/file_decoder.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** \file include/OggFLAC/file_decoder.h
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*
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* \brief
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* This module contains the functions which implement the file
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* decoder.
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*
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* See the detailed documentation in the
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* \link oggflac_file_decoder file decoder \endlink module.
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*/
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/** \defgroup oggflac_file_decoder OggFLAC/file_decoder.h: file decoder interface
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* \ingroup oggflac_decoder
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*
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* \brief
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* This module contains the functions which implement the file
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* decoder.
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*
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* The interface here is identical to FLAC's file decoder. See the
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* defaults, including the callbacks. See the \link flac_file_decoder
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* FLAC file decoder module \endlink for full documentation.
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*
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* \{
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*/
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/** State values for an OggFLAC__FileDecoder
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*
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* The decoder's state can be obtained by calling OggFLAC__file_decoder_get_state().
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*/
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typedef enum {
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OggFLAC__FILE_DECODER_OK = 0,
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/**< The decoder is in the normal OK state. */
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OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR,
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/**< An error occurred in the underlying FLAC file decoder;
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* check OggFLAC__file_decoder_get_FLAC_file_decoder_state().
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*/
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OggFLAC__FILE_DECODER_INVALID_CALLBACK,
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/**< The decoder was initialized before setting all the required callbacks. */
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OggFLAC__FILE_DECODER_MEMORY_ALLOCATION_ERROR,
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/**< Memory allocation failed. */
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OggFLAC__FILE_DECODER_ALREADY_INITIALIZED,
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/**< OggFLAC__file_decoder_init() was called when the decoder was
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* already initialized, usually because
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* OggFLAC__file_decoder_finish() was not called.
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*/
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OggFLAC__FILE_DECODER_UNINITIALIZED
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/**< The decoder is in the uninitialized state. */
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} OggFLAC__FileDecoderState;
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/** Maps an OggFLAC__FileDecoderState to a C string.
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*
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* Using an OggFLAC__FileDecoderState as the index to this array
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* will give the string equivalent. The contents should not be modified.
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*/
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extern OggFLAC_API const char * const OggFLAC__FileDecoderStateString[];
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/***********************************************************************
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*
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* class OggFLAC__FileDecoder : public FLAC__FileDecoder
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*
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***********************************************************************/
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struct OggFLAC__FileDecoderProtected;
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struct OggFLAC__FileDecoderPrivate;
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/** The opaque structure definition for the file decoder type. See the
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* \link oggflac_file_decoder file decoder module \endlink for a detailed
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* description.
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*/
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typedef struct {
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struct OggFLAC__FileDecoderProtected *protected_; /* avoid the C++ keyword 'protected' */
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struct OggFLAC__FileDecoderPrivate *private_; /* avoid the C++ keyword 'private' */
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} OggFLAC__FileDecoder;
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typedef FLAC__StreamDecoderWriteStatus (*OggFLAC__FileDecoderWriteCallback)(const OggFLAC__FileDecoder *decoder, const FLAC__Frame *frame, const FLAC__int32 * const buffer[], void *client_data);
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typedef void (*OggFLAC__FileDecoderMetadataCallback)(const OggFLAC__FileDecoder *decoder, const FLAC__StreamMetadata *metadata, void *client_data);
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typedef void (*OggFLAC__FileDecoderErrorCallback)(const OggFLAC__FileDecoder *decoder, FLAC__StreamDecoderErrorStatus status, void *client_data);
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/***********************************************************************
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*
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* Class constructor/destructor
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*
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***********************************************************************/
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/** Create a new file decoder instance. The instance is created with
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* default settings; see the individual OggFLAC__file_decoder_set_*()
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* functions for each setting's default.
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*
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* \retval OggFLAC__FileDecoder*
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* \c NULL if there was an error allocating memory, else the new instance.
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*/
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OggFLAC_API OggFLAC__FileDecoder *OggFLAC__file_decoder_new();
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/** Free a decoder instance. Deletes the object pointed to by \a decoder.
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*
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* \param decoder A pointer to an existing decoder.
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* \assert
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* \code decoder != NULL \endcode
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*/
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OggFLAC_API void OggFLAC__file_decoder_delete(OggFLAC__FileDecoder *decoder);
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/***********************************************************************
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*
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* Public class method prototypes
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*
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***********************************************************************/
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/*@@@inherit set_serial_number*/
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/** Set the "MD5 signature checking" flag.
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* This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_md5_checking().
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*
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* \default \c false
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* \param decoder A decoder instance to set.
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* \param value See above.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_md5_checking(OggFLAC__FileDecoder *decoder, FLAC__bool value);
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/** Set the input file name to decode.
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* This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_filename().
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*
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* \default \c "-"
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* \param decoder A decoder instance to set.
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* \param value The input file name, or "-" for \c stdin.
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* \assert
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* \code decoder != NULL \endcode
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* \code value != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, or there was a memory
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* allocation error, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_filename(OggFLAC__FileDecoder *decoder, const char *value);
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/** Set the write callback.
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* This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_write_callback().
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*
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* \note
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* The callback is mandatory and must be set before initialization.
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*
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* \default \c NULL
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* \param decoder A decoder instance to set.
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* \param value See above.
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* \assert
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* \code decoder != NULL \endcode
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* \code value != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_write_callback(OggFLAC__FileDecoder *decoder, OggFLAC__FileDecoderWriteCallback value);
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/** Set the metadata callback.
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* This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_callback().
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*
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* \note
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* The callback is mandatory and must be set before initialization.
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*
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* \default \c NULL
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* \param decoder A decoder instance to set.
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* \param value See above.
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* \assert
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* \code decoder != NULL \endcode
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* \code value != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_callback(OggFLAC__FileDecoder *decoder, OggFLAC__FileDecoderMetadataCallback value);
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/** Set the error callback.
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* This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_error_callback().
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*
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* \note
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* The callback is mandatory and must be set before initialization.
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*
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* \default \c NULL
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* \param decoder A decoder instance to set.
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* \param value See above.
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* \assert
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* \code decoder != NULL \endcode
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* \code value != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_error_callback(OggFLAC__FileDecoder *decoder, OggFLAC__FileDecoderErrorCallback value);
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/** Set the client data to be passed back to callbacks.
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* This value will be supplied to callbacks in their \a client_data
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* argument.
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*
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* \default \c NULL
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* \param decoder A decoder instance to set.
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* \param value See above.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_client_data(OggFLAC__FileDecoder *decoder, void *value);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_respond().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \param type See above.
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* \assert
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* \code decoder != NULL \endcode
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* \a type is valid
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_respond(OggFLAC__FileDecoder *decoder, OggFLAC__MetadataType type);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_respond_application().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \param id See above.
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* \assert
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* \code decoder != NULL \endcode
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* \code id != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_respond_application(OggFLAC__FileDecoder *decoder, const FLAC__byte id[4]);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_respond_all().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_respond_all(OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_ignore().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \param type See above.
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* \assert
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* \code decoder != NULL \endcode
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* \a type is valid
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore(OggFLAC__FileDecoder *decoder, OggFLAC__MetadataType type);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_ignore_application().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \param id See above.
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* \assert
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* \code decoder != NULL \endcode
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* \code id != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore_application(OggFLAC__FileDecoder *decoder, const FLAC__byte id[4]);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_set_metadata_ignore_all().
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*
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* \default By default, only the \c STREAMINFO block is returned via the
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* metadata callback.
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* \param decoder A decoder instance to set.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__bool
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* \c false if the decoder is already initialized, else \c true.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_set_metadata_ignore_all(OggFLAC__FileDecoder *decoder);
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/** Get the current decoder state.
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval OggFLAC__FileDecoderState
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* The current decoder state.
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*/
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OggFLAC_API OggFLAC__FileDecoderState OggFLAC__file_decoder_get_state(const OggFLAC__FileDecoder *decoder);
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/** Get the state of the underlying FLAC file decoder.
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* Useful when the file decoder state is
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* \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR.
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__FileDecoderState
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* The FLAC file decoder state.
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*/
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OggFLAC_API FLAC__FileDecoderState OggFLAC__file_decoder_get_FLAC_file_decoder_state(const OggFLAC__FileDecoder *decoder);
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/** Get the state of the underlying FLAC file decoder's seekable stream decoder.
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* Useful when the file decoder state is
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* \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR and the FLAC file decoder state is
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* \c FLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR.
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__SeekableStreamDecoderState
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* The FLAC seekable stream decoder state.
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*/
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OggFLAC_API FLAC__SeekableStreamDecoderState OggFLAC__file_decoder_get_FLAC_seekable_stream_decoder_state(const OggFLAC__FileDecoder *decoder);
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/** Get the state of the underlying FLAC file decoder's stream decoder.
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* Useful when the file decoder state is
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* \c OggFLAC__FILE_DECODER_FLAC_FILE_DECODER_ERROR and the FLAC file decoder state is
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* \c FLAC__FILE_DECODER_SEEKABLE_STREAM_DECODER_ERROR and the
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* FLAC seekable stream decoder state is \c FLAC__SEEKABLE_STREAM_DECODER_STREAM_DECODER_ERROR.
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__StreamDecoderState
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* The FLAC stream decoder state.
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*/
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OggFLAC_API FLAC__StreamDecoderState OggFLAC__file_decoder_get_FLAC_stream_decoder_state(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_md5_checking().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval FLAC__bool
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* See above.
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*/
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OggFLAC_API FLAC__bool OggFLAC__file_decoder_get_md5_checking(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_channels().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval unsigned
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* See above.
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*/
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OggFLAC_API unsigned OggFLAC__file_decoder_get_channels(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_channel_assignment().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval OggFLAC__ChannelAssignment
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* See above.
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*/
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OggFLAC_API OggFLAC__ChannelAssignment OggFLAC__file_decoder_get_channel_assignment(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_bits_per_sample().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval unsigned
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* See above.
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*/
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OggFLAC_API unsigned OggFLAC__file_decoder_get_bits_per_sample(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_sample_rate().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval unsigned
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* See above.
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*/
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OggFLAC_API unsigned OggFLAC__file_decoder_get_sample_rate(const OggFLAC__FileDecoder *decoder);
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/** This is inherited from FLAC__FileDecoder; see
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* FLAC__file_decoder_get_blocksize().
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*
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* \param decoder A decoder instance to query.
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* \assert
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* \code decoder != NULL \endcode
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* \retval unsigned
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* See above.
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*/
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OggFLAC_API unsigned OggFLAC__file_decoder_get_blocksize(const OggFLAC__FileDecoder *decoder);
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/** Initialize the decoder instance.
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* Should be called after OggFLAC__file_decoder_new() and
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* OggFLAC__file_decoder_set_*() but before any of the
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* OggFLAC__file_decoder_process_*() functions. Will set and return
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* the decoder state, which will be OggFLAC__FILE_DECODER_OK if
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* initialization succeeded.
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*
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* \param decoder An uninitialized decoder instance.
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* \assert
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* \code decoder != NULL \endcode
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* \retval OggFLAC__FileDecoderState
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* \c OggFLAC__FILE_DECODER_OK if initialization was successful; see
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* OggFLAC__FileDecoderState for the meanings of other return values.
|
|
*/
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|
OggFLAC_API OggFLAC__FileDecoderState OggFLAC__file_decoder_init(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** Finish the decoding process.
|
|
* Flushes the decoding buffer, releases resources, resets the decoder
|
|
* settings to their defaults, and returns the decoder state to
|
|
* OggFLAC__FILE_DECODER_UNINITIALIZED.
|
|
*
|
|
* In the event of a prematurely-terminated decode, it is not strictly
|
|
* necessary to call this immediately before OggFLAC__file_decoder_delete()
|
|
* but it is good practice to match every OggFLAC__file_decoder_init() with
|
|
* an OggFLAC__file_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.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_finish(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** This is inherited from FLAC__FileDecoder; see
|
|
* FLAC__file_decoder_process_single().
|
|
*
|
|
* \param decoder A decoder instance.
|
|
* \assert
|
|
* \code decoder != NULL \endcode
|
|
* \retval FLAC__bool
|
|
* See above.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_process_single(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** This is inherited from FLAC__FileDecoder; see
|
|
* FLAC__file_decoder_process_until_end_of_metadata().
|
|
*
|
|
* \param decoder A decoder instance.
|
|
* \assert
|
|
* \code decoder != NULL \endcode
|
|
* \retval FLAC__bool
|
|
* See above.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_process_until_end_of_metadata(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** This is inherited from FLAC__FileDecoder; see
|
|
* FLAC__file_decoder_process_until_end_of_stream().
|
|
*
|
|
* \param decoder A decoder instance.
|
|
* \assert
|
|
* \code decoder != NULL \endcode
|
|
* \retval FLAC__bool
|
|
* See above.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_process_until_end_of_file(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** This is inherited from FLAC__FileDecoder; see
|
|
* FLAC__file_decoder_process_remaining_frames().
|
|
*
|
|
* \param decoder A decoder instance.
|
|
* \assert
|
|
* \code decoder != NULL \endcode
|
|
* \retval FLAC__bool
|
|
* See above.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_process_remaining_frames(OggFLAC__FileDecoder *decoder);
|
|
|
|
/** This is inherited from FLAC__FileDecoder; see
|
|
* FLAC__file_decoder_seek_absolute().
|
|
*
|
|
* \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.
|
|
*/
|
|
OggFLAC_API FLAC__bool OggFLAC__file_decoder_seek_absolute(OggFLAC__FileDecoder *decoder, FLAC__uint64 sample);
|
|
|
|
/* \} */
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|