/* libFLAC - Free Lossless Audio Codec library * Copyright (C) 2000-2009  Josh Coalson * Copyright (C) 2011-2016  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 #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] */uint32_t FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]);uint32_t FLAC__fixed_compute_best_predictor_wide(const FLAC__int32 data[], uint32_t data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); /* *	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[], uint32_t data_len, uint32_t 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[], uint32_t data_len, uint32_t order, FLAC__int32 data[]); #endif