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      1 /* libFLAC - Free Lossless Audio Codec library
      2  * Copyright (C) 2001,2002,2003,2004,2005,2006,2007  Josh Coalson
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * - Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *
     11  * - Redistributions in binary form must reproduce the above copyright
     12  * notice, this list of conditions and the following disclaimer in the
     13  * documentation and/or other materials provided with the distribution.
     14  *
     15  * - Neither the name of the Xiph.org Foundation nor the names of its
     16  * contributors may be used to endorse or promote products derived from
     17  * this software without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22  * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
     23  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     24  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     25  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     26  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     27  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     28  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     29  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef FLAC__PROTECTED__STREAM_ENCODER_H
     33 #define FLAC__PROTECTED__STREAM_ENCODER_H
     34 
     35 #include "FLAC/stream_encoder.h"
     36 #if FLAC__HAS_OGG
     37 #include "private/ogg_encoder_aspect.h"
     38 #endif
     39 
     40 #ifndef FLAC__INTEGER_ONLY_LIBRARY
     41 
     42 #include "private/float.h"
     43 
     44 #define FLAC__MAX_APODIZATION_FUNCTIONS 32
     45 
     46 typedef enum {
     47 	FLAC__APODIZATION_BARTLETT,
     48 	FLAC__APODIZATION_BARTLETT_HANN,
     49 	FLAC__APODIZATION_BLACKMAN,
     50 	FLAC__APODIZATION_BLACKMAN_HARRIS_4TERM_92DB_SIDELOBE,
     51 	FLAC__APODIZATION_CONNES,
     52 	FLAC__APODIZATION_FLATTOP,
     53 	FLAC__APODIZATION_GAUSS,
     54 	FLAC__APODIZATION_HAMMING,
     55 	FLAC__APODIZATION_HANN,
     56 	FLAC__APODIZATION_KAISER_BESSEL,
     57 	FLAC__APODIZATION_NUTTALL,
     58 	FLAC__APODIZATION_RECTANGLE,
     59 	FLAC__APODIZATION_TRIANGLE,
     60 	FLAC__APODIZATION_TUKEY,
     61 	FLAC__APODIZATION_WELCH
     62 } FLAC__ApodizationFunction;
     63 
     64 typedef struct {
     65 	FLAC__ApodizationFunction type;
     66 	union {
     67 		struct {
     68 			FLAC__real stddev;
     69 		} gauss;
     70 		struct {
     71 			FLAC__real p;
     72 		} tukey;
     73 	} parameters;
     74 } FLAC__ApodizationSpecification;
     75 
     76 #endif // #ifndef FLAC__INTEGER_ONLY_LIBRARY
     77 
     78 typedef struct FLAC__StreamEncoderProtected {
     79 	FLAC__StreamEncoderState state;
     80 	FLAC__bool verify;
     81 	FLAC__bool streamable_subset;
     82 	FLAC__bool do_md5;
     83 	FLAC__bool do_mid_side_stereo;
     84 	FLAC__bool loose_mid_side_stereo;
     85 	unsigned channels;
     86 	unsigned bits_per_sample;
     87 	unsigned sample_rate;
     88 	unsigned blocksize;
     89 #ifndef FLAC__INTEGER_ONLY_LIBRARY
     90 	unsigned num_apodizations;
     91 	FLAC__ApodizationSpecification apodizations[FLAC__MAX_APODIZATION_FUNCTIONS];
     92 #endif
     93 	unsigned max_lpc_order;
     94 	unsigned qlp_coeff_precision;
     95 	FLAC__bool do_qlp_coeff_prec_search;
     96 	FLAC__bool do_exhaustive_model_search;
     97 	FLAC__bool do_escape_coding;
     98 	unsigned min_residual_partition_order;
     99 	unsigned max_residual_partition_order;
    100 	unsigned rice_parameter_search_dist;
    101 	FLAC__uint64 total_samples_estimate;
    102 	FLAC__StreamMetadata **metadata;
    103 	unsigned num_metadata_blocks;
    104 	FLAC__uint64 streaminfo_offset, seektable_offset, audio_offset;
    105 #if FLAC__HAS_OGG
    106 	FLAC__OggEncoderAspect ogg_encoder_aspect;
    107 #endif
    108 } FLAC__StreamEncoderProtected;
    109 
    110 #endif
    111