/* libFLAC - Free Lossless Audio Codec library
* Copyright (C) 2002,2003,2004 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
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef FLAC__SEEKABLE_STREAM_ENCODER_H
#define FLAC__SEEKABLE_STREAM_ENCODER_H
#include "export.h"
#include "stream_encoder.h"
#ifdef __cplusplus
extern "C" {
#endif
/** \file include/FLAC/seekable_stream_encoder.h
*
* \brief
* This module contains the functions which implement the seekable stream
* encoder.
*
* See the detailed documentation in the
* \link flac_seekable_stream_encoder seekable stream encoder \endlink module.
*/
/** \defgroup flac_seekable_stream_encoder FLAC/seekable_stream_encoder.h: seekable stream encoder interface
* \ingroup flac_encoder
*
* \brief
* This module contains the functions which implement the seekable stream
* encoder.
*
* The basic usage of this encoder is as follows:
* - The program creates an instance of an encoder using
* FLAC__seekable_stream_encoder_new().
* - The program overrides the default settings and sets callbacks using
* FLAC__seekable_stream_encoder_set_*() functions.
* - The program initializes the instance to validate the settings and
* prepare for encoding using FLAC__seekable_stream_encoder_init().
* - The program calls FLAC__seekable_stream_encoder_process() or
* FLAC__seekable_stream_encoder_process_interleaved() to encode data, which
* subsequently calls the callbacks when there is encoder data ready
* to be written.
* - The program finishes the encoding with FLAC__seekable_stream_encoder_finish(),
* which causes the encoder to encode any data still in its input pipe,
* rewrite the metadata with the final encoding statistics, and finally
* reset the encoder to the uninitialized state.
* - The instance may be used again or deleted with
* FLAC__seekable_stream_encoder_delete().
*
* The seekable stream encoder is a wrapper around the
* \link flac_stream_encoder stream encoder \endlink with callbacks for
* seeking the output and reporting the output stream position. This
* allows the encoder to go back and rewrite some of the metadata after
* encoding if necessary, and provides the metadata callback of the stream
* encoder internally. However, you must provide seek and tell callbacks
* (see FLAC__seekable_stream_encoder_set_seek_callback() and
* FLAC__seekable_stream_encoder_set_tell_callback()).
*
* Make sure to read the detailed description of the
* \link flac_stream_encoder stream encoder module \endlink since the
* seekable stream encoder inherits much of its behavior.
*
* \note
* If you are writing the FLAC data to a file, make sure it is open
* for update (e.g. mode "w+" for stdio streams). This is because after
* the first encoding pass, the encoder will try to seek back to the
* beginning of the stream, to the STREAMINFO block, to write some data
* there.
*
* \note
* The "set" functions may only be called when the encoder is in the
* state FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED, i.e. after
* FLAC__seekable_stream_encoder_new() or FLAC__seekable_stream_encoder_finish(), but
* before FLAC__seekable_stream_encoder_init(). If this is the case they will
* return \c true, otherwise \c false.
*
* \note
* FLAC__seekable_stream_encoder_finish() resets all settings to the constructor
* defaults, including the callbacks.
*
* \{
*/
/** State values for a FLAC__SeekableStreamEncoder
*
* The encoder's state can be obtained by calling FLAC__seekable_stream_encoder_get_state().
*/
typedef enum {
FLAC__SEEKABLE_STREAM_ENCODER_OK = 0,
/**< The encoder is in the normal OK state. */
FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR,
/**< An error occurred in the underlying stream encoder;
* check FLAC__seekable_stream_encoder_get_stream_encoder_state().
*/
FLAC__SEEKABLE_STREAM_ENCODER_MEMORY_ALLOCATION_ERROR,
/**< Memory allocation failed. */
FLAC__SEEKABLE_STREAM_ENCODER_WRITE_ERROR,
/**< The write callback returned an error. */
FLAC__SEEKABLE_STREAM_ENCODER_READ_ERROR,
/**< The read callback returned an error. */
FLAC__SEEKABLE_STREAM_ENCODER_SEEK_ERROR,
/**< The seek callback returned an error. */
FLAC__SEEKABLE_STREAM_ENCODER_TELL_ERROR,
/**< The tell callback returned an error. */
FLAC__SEEKABLE_STREAM_ENCODER_ALREADY_INITIALIZED,
/**< FLAC__seekable_stream_encoder_init() was called when the encoder was
* already initialized, usually because
* FLAC__seekable_stream_encoder_finish() was not called.
*/
FLAC__SEEKABLE_STREAM_ENCODER_INVALID_CALLBACK,
/**< FLAC__seekable_stream_encoder_init() was called without all
* callbacks being set.
*/
FLAC__SEEKABLE_STREAM_ENCODER_INVALID_SEEKTABLE,
/**< An invalid seek table was passed is the metadata to
* FLAC__seekable_stream_encoder_set_metadata().
*/
FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED
/**< The encoder is in the uninitialized state. */
} FLAC__SeekableStreamEncoderState;
/** Maps a FLAC__SeekableStreamEncoderState to a C string.
*
* Using a FLAC__SeekableStreamEncoderState as the index to this array
* will give the string equivalent. The contents should not be modified.
*/
extern FLAC_API const char * const FLAC__SeekableStreamEncoderStateString[];
/** Return values for the FLAC__SeekableStreamEncoder seek callback.
*/
typedef enum {
FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_OK,
/**< The seek was OK and encoding can continue. */
FLAC__SEEKABLE_STREAM_ENCODER_SEEK_STATUS_ERROR
/**< An unrecoverable error occurred. The encoder will return from the process call. */
} FLAC__SeekableStreamEncoderSeekStatus;
/** Maps a FLAC__SeekableStreamEncoderSeekStatus to a C string.
*
* Using a FLAC__SeekableStreamEncoderSeekStatus as the index to this array
* will give the string equivalent. The contents should not be modified.
*/
extern FLAC_API const char * const FLAC__SeekableStreamEncoderSeekStatusString[];
/** Return values for the FLAC__SeekableStreamEncoder tell callback.
*/
typedef enum {
FLAC__SEEKABLE_STREAM_ENCODER_TELL_STATUS_OK,
/**< The tell was OK and encoding can continue. */
FLAC__SEEKABLE_STREAM_ENCODER_TELL_STATUS_ERROR
/**< An unrecoverable error occurred. The encoder will return from the process call. */
} FLAC__SeekableStreamEncoderTellStatus;
/** Maps a FLAC__SeekableStreamEncoderTellStatus to a C string.
*
* Using a FLAC__SeekableStreamEncoderTellStatus as the index to this array
* will give the string equivalent. The contents should not be modified.
*/
extern FLAC_API const char * const FLAC__SeekableStreamEncoderTellStatusString[];
/***********************************************************************
*
* class FLAC__SeekableStreamEncoder
*
***********************************************************************/
struct FLAC__SeekableStreamEncoderProtected;
struct FLAC__SeekableStreamEncoderPrivate;
/** The opaque structure definition for the seekable stream encoder type.
* See the \link flac_seekable_stream_encoder seekable stream encoder module \endlink
* for a detailed description.
*/
typedef struct {
struct FLAC__SeekableStreamEncoderProtected *protected_; /* avoid the C++ keyword 'protected' */
struct FLAC__SeekableStreamEncoderPrivate *private_; /* avoid the C++ keyword 'private' */
} FLAC__SeekableStreamEncoder;
/** Signature for the seek callback.
* See FLAC__seekable_stream_encoder_set_seek_callback() for more info.
*
* \param encoder The encoder 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_encoder_set_client_data().
* \retval FLAC__SeekableStreamEncoderSeekStatus
* The callee's return status.
*/
typedef FLAC__SeekableStreamEncoderSeekStatus (*FLAC__SeekableStreamEncoderSeekCallback)(const FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 absolute_byte_offset, void *client_data);
/** Signature for the tell callback.
* See FLAC__seekable_stream_encoder_set_tell_callback() for more info.
*
* \warning
* The callback must return the true current byte offset of the output to
* which the encoder is writing. If you are buffering the output, make
* sure and take this into account. If you are writing directly to a
* FILE* from your write callback, ftell() is sufficient. If you are
* writing directly to a file descriptor from your write callback, you
* can use lseek(fd, SEEK_CUR, 0). The encoder may later seek back to
* these points to rewrite metadata after encoding.
*
* \param encoder The encoder instance calling the callback.
* \param absolute_byte_offset The address at which to store the current
* position of the output.
* \param client_data The callee's client data set through
* FLAC__seekable_stream_encoder_set_client_data().
* \retval FLAC__SeekableStreamEncoderTellStatus
* The callee's return status.
*/
typedef FLAC__SeekableStreamEncoderTellStatus (*FLAC__SeekableStreamEncoderTellCallback)(const FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 *absolute_byte_offset, void *client_data);
/** Signature for the write callback.
* See FLAC__seekable_stream_encoder_set_write_callback()
* and FLAC__StreamEncoderWriteCallback for more info.
*
* \param encoder The encoder instance calling the callback.
* \param buffer An array of encoded data of length \a bytes.
* \param bytes The byte length of \a buffer.
* \param samples The number of samples encoded by \a buffer.
* \c 0 has a special meaning; see
* FLAC__stream_encoder_set_write_callback().
* \param current_frame The number of current frame being encoded.
* \param client_data The callee's client data set through
* FLAC__seekable_stream_encoder_set_client_data().
* \retval FLAC__StreamEncoderWriteStatus
* The callee's return status.
*/
typedef FLAC__StreamEncoderWriteStatus (*FLAC__SeekableStreamEncoderWriteCallback)(const FLAC__SeekableStreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data);
/***********************************************************************
*
* Class constructor/destructor
*
***********************************************************************/
/** Create a new seekable stream encoder instance. The instance is created with
* default settings; see the individual FLAC__seekable_stream_encoder_set_*()
* functions for each setting's default.
*
* \retval FLAC__SeekableStreamEncoder*
* \c NULL if there was an error allocating memory, else the new instance.
*/
FLAC_API FLAC__SeekableStreamEncoder *FLAC__seekable_stream_encoder_new();
/** Free an encoder instance. Deletes the object pointed to by \a encoder.
*
* \param encoder A pointer to an existing encoder.
* \assert
* \code encoder != NULL \endcode
*/
FLAC_API void FLAC__seekable_stream_encoder_delete(FLAC__SeekableStreamEncoder *encoder);
/***********************************************************************
*
* Public class method prototypes
*
***********************************************************************/
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_verify().
*
* \default \c true
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_verify(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_streamable_subset().
*
* \default \c true
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_streamable_subset(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_do_mid_side_stereo().
*
* \default \c false
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_do_mid_side_stereo(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_loose_mid_side_stereo().
*
* \default \c false
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_loose_mid_side_stereo(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_channels().
*
* \default \c 2
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_channels(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_bits_per_sample().
*
* \warning
* Do not feed the encoder data that is wider than the value you
* set here or you will generate an invalid stream.
*
* \default \c 16
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_bits_per_sample(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_sample_rate().
*
* \default \c 44100
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_sample_rate(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_blocksize().
*
* \default \c 1152
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_blocksize(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_max_lpc_order().
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_max_lpc_order(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_qlp_coeff_precision().
*
* \note
* In the current implementation, qlp_coeff_precision + bits_per_sample must
* be less than 32.
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_qlp_coeff_precision(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_do_qlp_coeff_prec_search().
*
* \default \c false
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_do_escape_coding().
*
* \default \c false
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_do_escape_coding(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_do_exhaustive_model_search().
*
* \default \c false
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_do_exhaustive_model_search(FLAC__SeekableStreamEncoder *encoder, FLAC__bool value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_min_residual_partition_order().
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_min_residual_partition_order(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_max_residual_partition_order().
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_max_residual_partition_order(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_rice_parameter_search_dist().
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_rice_parameter_search_dist(FLAC__SeekableStreamEncoder *encoder, unsigned value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_total_samples_estimate().
*
* \default \c 0
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_total_samples_estimate(FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 value);
/** This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_metadata().
*
* \note
* SEEKTABLE blocks are handled specially. Since you will not know
* the values for the seek point stream offsets, you should pass in
* a SEEKTABLE 'template', that is, a SEEKTABLE object with the
* required sample numbers (or placeholder points), with \c 0 for the
* \a frame_samples and \a stream_offset fields for each point. While
* encoding, the encoder will fill them in for you and when encoding
* is finished, it will seek back and write the real values into the
* SEEKTABLE block in the stream. There are helper routines for
* manipulating seektable template blocks; see metadata.h:
* FLAC__metadata_object_seektable_template_*().
*
* \note
* The encoder instance \b will modify the first \c SEEKTABLE block
* as it transforms the template to a valid seektable while encoding,
* but it is still up to the caller to free all metadata blocks after
* encoding.
*
* \default \c NULL, 0
* \param encoder An encoder instance to set.
* \param metadata See above.
* \param num_blocks See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_metadata(FLAC__SeekableStreamEncoder *encoder, FLAC__StreamMetadata **metadata, unsigned num_blocks);
/** Set the seek callback.
* The supplied function will be called when the encoder needs to seek
* the output stream. The encoder 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 encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \code value != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_seek_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__SeekableStreamEncoderSeekCallback value);
/** Set the tell callback.
* The supplied function will be called when the encoder needs to know
* the current position of the output stream.
*
* \note
* The callback is mandatory and must be set before initialization.
*
* \default \c NULL
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \code value != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_tell_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__SeekableStreamEncoderTellCallback value);
/** Set the write callback.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_set_write_callback().
*
* \note
* The callback is mandatory and must be set before initialization.
*
* \default \c NULL
* \param encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \code value != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_write_callback(FLAC__SeekableStreamEncoder *encoder, FLAC__SeekableStreamEncoderWriteCallback 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 encoder An encoder instance to set.
* \param value See above.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* \c false if the encoder is already initialized, else \c true.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_set_client_data(FLAC__SeekableStreamEncoder *encoder, void *value);
/** Get the current encoder state.
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__SeekableStreamEncoderState
* The current encoder state.
*/
FLAC_API FLAC__SeekableStreamEncoderState FLAC__seekable_stream_encoder_get_state(const FLAC__SeekableStreamEncoder *encoder);
/** Get the state of the underlying stream encoder.
* Useful when the seekable stream encoder state is
* \c FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR.
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__StreamEncoderState
* The stream encoder state.
*/
FLAC_API FLAC__StreamEncoderState FLAC__seekable_stream_encoder_get_stream_encoder_state(const FLAC__SeekableStreamEncoder *encoder);
/** Get the state of the underlying stream encoder's verify decoder.
* Useful when the seekable stream encoder state is
* \c FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR and the
* stream encoder state is \c FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR.
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__StreamDecoderState
* The stream encoder state.
*/
FLAC_API FLAC__StreamDecoderState FLAC__seekable_stream_encoder_get_verify_decoder_state(const FLAC__SeekableStreamEncoder *encoder);
/** Get the current encoder state as a C string.
* This version automatically resolves
* \c FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR by getting the
* stream encoder's state.
*
* \param encoder A encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval const char *
* The encoder state as a C string. Do not modify the contents.
*/
FLAC_API const char *FLAC__seekable_stream_encoder_get_resolved_state_string(const FLAC__SeekableStreamEncoder *encoder);
/** Get relevant values about the nature of a verify decoder error.
* Inherited from FLAC__stream_encoder_get_verify_decoder_error_stats().
* Useful when the seekable stream encoder state is
* \c FLAC__SEEKABLE_STREAM_ENCODER_STREAM_ENCODER_ERROR and the
* stream encoder state is
* \c FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR.
*
* \param encoder An encoder instance to query.
* \param absolute_sample The absolute sample number of the mismatch.
* \param frame_number The number of the frame in which the mismatch occurred.
* \param channel The channel in which the mismatch occurred.
* \param sample The number of the sample (relative to the frame) in
* which the mismatch occurred.
* \param expected The expected value for the sample in question.
* \param got The actual value returned by the decoder.
* \assert
* \code encoder != NULL \endcode
*/
FLAC_API void FLAC__seekable_stream_encoder_get_verify_decoder_error_stats(const FLAC__SeekableStreamEncoder *encoder, FLAC__uint64 *absolute_sample, unsigned *frame_number, unsigned *channel, unsigned *sample, FLAC__int32 *expected, FLAC__int32 *got);
/** Get the "verify" flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_verify().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_verify().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_verify(const FLAC__SeekableStreamEncoder *encoder);
/** Get the "streamable subset" flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_streamable_subset().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_streamable_subset().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_streamable_subset(const FLAC__SeekableStreamEncoder *encoder);
/** Get the "mid/side stereo coding" flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_do_mid_side_stereo().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_get_do_mid_side_stereo().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_do_mid_side_stereo(const FLAC__SeekableStreamEncoder *encoder);
/** Get the "adaptive mid/side switching" flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_loose_mid_side_stereo().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_loose_mid_side_stereo().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_loose_mid_side_stereo(const FLAC__SeekableStreamEncoder *encoder);
/** Get the number of input channels being processed.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_channels().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_channels().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_channels(const FLAC__SeekableStreamEncoder *encoder);
/** Get the input sample resolution setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_bits_per_sample().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_bits_per_sample().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_bits_per_sample(const FLAC__SeekableStreamEncoder *encoder);
/** Get the input sample rate setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_sample_rate().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_sample_rate().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_sample_rate(const FLAC__SeekableStreamEncoder *encoder);
/** Get the blocksize setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_blocksize().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_blocksize().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_blocksize(const FLAC__SeekableStreamEncoder *encoder);
/** Get the maximum LPC order setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_max_lpc_order().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_max_lpc_order().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_max_lpc_order(const FLAC__SeekableStreamEncoder *encoder);
/** Get the quantized linear predictor coefficient precision setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_qlp_coeff_precision().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_qlp_coeff_precision().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_qlp_coeff_precision(const FLAC__SeekableStreamEncoder *encoder);
/** Get the qlp coefficient precision search flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_do_qlp_coeff_prec_search().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_do_qlp_coeff_prec_search().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_do_qlp_coeff_prec_search(const FLAC__SeekableStreamEncoder *encoder);
/** Get the "escape coding" flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_do_escape_coding().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_do_escape_coding().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_do_escape_coding(const FLAC__SeekableStreamEncoder *encoder);
/** Get the exhaustive model search flag.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_do_exhaustive_model_search().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__bool
* See FLAC__seekable_stream_encoder_set_do_exhaustive_model_search().
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_get_do_exhaustive_model_search(const FLAC__SeekableStreamEncoder *encoder);
/** Get the minimum residual partition order setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_min_residual_partition_order().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_min_residual_partition_order().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_min_residual_partition_order(const FLAC__SeekableStreamEncoder *encoder);
/** Get maximum residual partition order setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_max_residual_partition_order().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_max_residual_partition_order().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_max_residual_partition_order(const FLAC__SeekableStreamEncoder *encoder);
/** Get the Rice parameter search distance setting.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_rice_parameter_search_dist().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval unsigned
* See FLAC__seekable_stream_encoder_set_rice_parameter_search_dist().
*/
FLAC_API unsigned FLAC__seekable_stream_encoder_get_rice_parameter_search_dist(const FLAC__SeekableStreamEncoder *encoder);
/** Get the previously set estimate of the total samples to be encoded.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_get_total_samples_estimate().
*
* \param encoder An encoder instance to query.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__uint64
* See FLAC__seekable_stream_encoder_set_total_samples_estimate().
*/
FLAC_API FLAC__uint64 FLAC__seekable_stream_encoder_get_total_samples_estimate(const FLAC__SeekableStreamEncoder *encoder);
/** Initialize the encoder instance.
* Should be called after FLAC__seekable_stream_encoder_new() and
* FLAC__seekable_stream_encoder_set_*() but before FLAC__seekable_stream_encoder_process()
* or FLAC__seekable_stream_encoder_process_interleaved(). Will set and return
* the encoder state, which will be FLAC__SEEKABLE_STREAM_ENCODER_OK if
* initialization succeeded.
*
* The call to FLAC__seekable_stream_encoder_init() currently will also immediately
* call the write callback with the \c fLaC signature and all the encoded
* metadata.
*
* \param encoder An uninitialized encoder instance.
* \assert
* \code encoder != NULL \endcode
* \retval FLAC__SeekableStreamEncoderState
* \c FLAC__SEEKABLE_STREAM_ENCODER_OK if initialization was successful; see
* FLAC__SeekableStreamEncoderState for the meanings of other return values.
*/
FLAC_API FLAC__SeekableStreamEncoderState FLAC__seekable_stream_encoder_init(FLAC__SeekableStreamEncoder *encoder);
/** Finish the encoding process.
* Flushes the encoding buffer, releases resources, resets the encoder
* settings to their defaults, and returns the encoder state to
* FLAC__SEEKABLE_STREAM_ENCODER_UNINITIALIZED.
*
* In the event of a prematurely-terminated encode, it is not strictly
* necessary to call this immediately before FLAC__seekable_stream_encoder_delete()
* but it is good practice to match every FLAC__seekable_stream_encoder_init()
* with a FLAC__seekable_stream_encoder_finish().
*
* \param encoder An uninitialized encoder instance.
* \assert
* \code encoder != NULL \endcode
*/
FLAC_API void FLAC__seekable_stream_encoder_finish(FLAC__SeekableStreamEncoder *encoder);
/** Submit data for encoding.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_process().
*
* \param encoder An initialized encoder instance in the OK state.
* \param buffer An array of pointers to each channel's signal.
* \param samples The number of samples in one channel.
* \assert
* \code encoder != NULL \endcode
* \code FLAC__seekable_stream_encoder_get_state(encoder) == FLAC__SEEKABLE_STREAM_ENCODER_OK \endcode
* \retval FLAC__bool
* \c true if successful, else \c false; in this case, check the
* encoder state with FLAC__seekable_stream_encoder_get_state() to see what
* went wrong.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_process(FLAC__SeekableStreamEncoder *encoder, const FLAC__int32 * const buffer[], unsigned samples);
/** Submit data for encoding.
* This is inherited from FLAC__StreamEncoder; see
* FLAC__stream_encoder_process_interleaved().
*
* \param encoder An initialized encoder instance in the OK state.
* \param buffer An array of channel-interleaved data (see above).
* \param samples The number of samples in one channel, the same as for
* FLAC__seekable_stream_encoder_process(). For example, if
* encoding two channels, \c 1000 \a samples corresponds
* to a \a buffer of 2000 values.
* \assert
* \code encoder != NULL \endcode
* \code FLAC__seekable_stream_encoder_get_state(encoder) == FLAC__SEEKABLE_STREAM_ENCODER_OK \endcode
* \retval FLAC__bool
* \c true if successful, else \c false; in this case, check the
* encoder state with FLAC__seekable_stream_encoder_get_state() to see what
* went wrong.
*/
FLAC_API FLAC__bool FLAC__seekable_stream_encoder_process_interleaved(FLAC__SeekableStreamEncoder *encoder, const FLAC__int32 buffer[], unsigned samples);
/* \} */
#ifdef __cplusplus
}
#endif
#endif
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