| ce188d4d |
1 | /* libFLAC - Free Lossless Audio Codec library |
| 2 | * Copyright (C) 2000-2009 Josh Coalson |
| 3 | * Copyright (C) 2011-2016 Xiph.Org Foundation |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of the Xiph.org Foundation nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived from |
| 18 | * this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 22 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 23 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #ifndef FLAC__PRIVATE__FIXED_H |
| 34 | #define FLAC__PRIVATE__FIXED_H |
| 35 | |
| 36 | #ifdef HAVE_CONFIG_H |
| 37 | #include <config.h> |
| 38 | #endif |
| 39 | |
| 40 | #include "private/cpu.h" |
| 41 | #include "private/float.h" |
| 42 | #include "FLAC/format.h" |
| 43 | |
| 44 | /* |
| 45 | * FLAC__fixed_compute_best_predictor() |
| 46 | * -------------------------------------------------------------------- |
| 47 | * Compute the best fixed predictor and the expected bits-per-sample |
| 48 | * of the residual signal for each order. The _wide() version uses |
| 49 | * 64-bit integers which is statistically necessary when bits-per- |
| 50 | * sample + log2(blocksize) > 30 |
| 51 | * |
| 52 | * IN data[0,data_len-1] |
| 53 | * IN data_len |
| 54 | * OUT residual_bits_per_sample[0,FLAC__MAX_FIXED_ORDER] |
| 55 | */ |
| 56 | #ifndef FLAC__INTEGER_ONLY_LIBRARY |
| 57 | unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 58 | unsigned FLAC__fixed_compute_best_predictor_wide(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 59 | # ifndef FLAC__NO_ASM |
| 60 | # if (defined FLAC__CPU_IA32 || defined FLAC__CPU_X86_64) && FLAC__HAS_X86INTRIN |
| 61 | # ifdef FLAC__SSE2_SUPPORTED |
| 62 | unsigned FLAC__fixed_compute_best_predictor_intrin_sse2(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]); |
| 63 | unsigned FLAC__fixed_compute_best_predictor_wide_intrin_sse2(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]); |
| 64 | # endif |
| 65 | # ifdef FLAC__SSSE3_SUPPORTED |
| 66 | unsigned FLAC__fixed_compute_best_predictor_intrin_ssse3(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 67 | unsigned FLAC__fixed_compute_best_predictor_wide_intrin_ssse3(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER + 1]); |
| 68 | # endif |
| 69 | # endif |
| 70 | # if defined FLAC__CPU_IA32 && defined FLAC__HAS_NASM |
| 71 | unsigned FLAC__fixed_compute_best_predictor_asm_ia32_mmx_cmov(const FLAC__int32 data[], unsigned data_len, float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 72 | # endif |
| 73 | # endif |
| 74 | #else |
| 75 | unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); |
| 76 | 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]); |
| 77 | #endif |
| 78 | |
| 79 | /* |
| 80 | * FLAC__fixed_compute_residual() |
| 81 | * -------------------------------------------------------------------- |
| 82 | * Compute the residual signal obtained from sutracting the predicted |
| 83 | * signal from the original. |
| 84 | * |
| 85 | * IN data[-order,data_len-1] original signal (NOTE THE INDICES!) |
| 86 | * IN data_len length of original signal |
| 87 | * IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order |
| 88 | * OUT residual[0,data_len-1] residual signal |
| 89 | */ |
| 90 | void FLAC__fixed_compute_residual(const FLAC__int32 data[], unsigned data_len, unsigned order, FLAC__int32 residual[]); |
| 91 | |
| 92 | /* |
| 93 | * FLAC__fixed_restore_signal() |
| 94 | * -------------------------------------------------------------------- |
| 95 | * Restore the original signal by summing the residual and the |
| 96 | * predictor. |
| 97 | * |
| 98 | * IN residual[0,data_len-1] residual signal |
| 99 | * IN data_len length of original signal |
| 100 | * IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order |
| 101 | * *** IMPORTANT: the caller must pass in the historical samples: |
| 102 | * IN data[-order,-1] previously-reconstructed historical samples |
| 103 | * OUT data[0,data_len-1] original signal |
| 104 | */ |
| 105 | void FLAC__fixed_restore_signal(const FLAC__int32 residual[], unsigned data_len, unsigned order, FLAC__int32 data[]); |
| 106 | |
| 107 | #endif |
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