text: /* libFLAC - Free Lossless Audio Codec library
   * Copyright (C) 2000-2009  Josh Coalson
   * Copyright (C) 2011-2013  Xiph.Org Foundation
   *
   * 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__PRIVATE__FIXED_H
  #define FLAC__PRIVATE__FIXED_H
  
  #ifdef HAVE_CONFIG_H
  #include <config.h>
  #endif
  
  #include "private/cpu.h"
  #include "private/float.h"
  #include "FLAC/format.h"
  
  /*
   *	FLAC__fixed_compute_best_predictor()
   *	--------------------------------------------------------------------
   *	Compute the best fixed predictor and the expected bits-per-sample
   *  of the residual signal for each order.  The _wide() version uses
   *  64-bit integers which is statistically necessary when bits-per-
   *  sample + log2(blocksize) > 30
   *
   *	IN data[0,data_len-1]
   *	IN data_len
   *	OUT residual_bits_per_sample[0,FLAC__MAX_FIXED_ORDER]
   */
  #ifndef FLAC__INTEGER_ONLY_LIBRARY
  unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  unsigned FLAC__fixed_compute_best_predictor_wide(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  # ifndef FLAC__NO_ASM
  #  if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && defined FLAC__HAS_X86INTRIN
  #   ifdef FLAC__SSE2_SUPPORTED
  unsigned FLAC__fixed_compute_best_predictor_intrin_sse2(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]);
  unsigned FLAC__fixed_compute_best_predictor_wide_intrin_sse2(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]);
  #   endif
  #   ifdef FLAC__SSSE3_SUPPORTED
  unsigned FLAC__fixed_compute_best_predictor_intrin_ssse3(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  unsigned FLAC__fixed_compute_best_predictor_wide_intrin_ssse3(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]);
  #   endif
  #  endif
  #  if defined FLAC__CPU_IA32 && defined FLAC__HAS_NASM
  unsigned FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  #  endif
  # endif
  #else
  unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  unsigned FLAC__fixed_compute_best_predictor_wide(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);
  #endif
  
  /*
   *	FLAC__fixed_compute_residual()
   *	--------------------------------------------------------------------
   *	Compute the residual signal obtained from sutracting the predicted
   *	signal from the original.
   *
   *	IN data[-order,data_len-1]        original signal (NOTE THE INDICES!)
   *	IN data_len                       length of original signal
   *	IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order
   *	OUT residual[0,data_len-1]        residual signal
   */
  void FLAC__fixed_compute_residual(const FLAC__int32 data[], unsigned data_len, unsigned order, FLAC__int32 residual[]);
  
  /*
   *	FLAC__fixed_restore_signal()
   *	--------------------------------------------------------------------
   *	Restore the original signal by summing the residual and the
   *	predictor.
   *
   *	IN residual[0,data_len-1]         residual signal
   *	IN data_len                       length of original signal
   *	IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order
   *	*** IMPORTANT: the caller must pass in the historical samples:
   *	IN  data[-order,-1]               previously-reconstructed historical samples
   *	OUT data[0,data_len-1]            original signal
   */
  void FLAC__fixed_restore_signal(const FLAC__int32 residual[], unsigned data_len, unsigned order, FLAC__int32 data[]);
  
  #endif
  