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Diffstat (limited to 'apps/codecs/libFLAC/include/private/fixed.h')
-rw-r--r-- | apps/codecs/libFLAC/include/private/fixed.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/apps/codecs/libFLAC/include/private/fixed.h b/apps/codecs/libFLAC/include/private/fixed.h new file mode 100644 index 0000000000..8401ffa8ee --- /dev/null +++ b/apps/codecs/libFLAC/include/private/fixed.h | |||
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1 | /* libFLAC - Free Lossless Audio Codec library | ||
2 | * Copyright (C) 2000,2001,2002,2003,2004,2005 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__PRIVATE__FIXED_H | ||
33 | #define FLAC__PRIVATE__FIXED_H | ||
34 | |||
35 | #ifdef HAVE_CONFIG_H | ||
36 | #include <config.h> | ||
37 | #endif | ||
38 | |||
39 | #include "private/float.h" | ||
40 | #include "FLAC/format.h" | ||
41 | |||
42 | /* | ||
43 | * FLAC__fixed_compute_best_predictor() | ||
44 | * -------------------------------------------------------------------- | ||
45 | * Compute the best fixed predictor and the expected bits-per-sample | ||
46 | * of the residual signal for each order. The _wide() version uses | ||
47 | * 64-bit integers which is statistically necessary when bits-per- | ||
48 | * sample + log2(blocksize) > 30 | ||
49 | * | ||
50 | * IN data[0,data_len-1] | ||
51 | * IN data_len | ||
52 | * OUT residual_bits_per_sample[0,FLAC__MAX_FIXED_ORDER] | ||
53 | */ | ||
54 | #ifndef FLAC__INTEGER_ONLY_LIBRARY | ||
55 | unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, FLAC__float residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); | ||
56 | # ifndef FLAC__NO_ASM | ||
57 | # ifdef FLAC__CPU_IA32 | ||
58 | # ifdef FLAC__HAS_NASM | ||
59 | 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]); | ||
60 | # endif | ||
61 | # endif | ||
62 | # endif | ||
63 | 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]); | ||
64 | #else | ||
65 | unsigned FLAC__fixed_compute_best_predictor(const FLAC__int32 data[], unsigned data_len, FLAC__fixedpoint residual_bits_per_sample[FLAC__MAX_FIXED_ORDER+1]); | ||
66 | 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]); | ||
67 | #endif | ||
68 | |||
69 | /* | ||
70 | * FLAC__fixed_compute_residual() | ||
71 | * -------------------------------------------------------------------- | ||
72 | * Compute the residual signal obtained from sutracting the predicted | ||
73 | * signal from the original. | ||
74 | * | ||
75 | * IN data[-order,data_len-1] original signal (NOTE THE INDICES!) | ||
76 | * IN data_len length of original signal | ||
77 | * IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order | ||
78 | * OUT residual[0,data_len-1] residual signal | ||
79 | */ | ||
80 | void FLAC__fixed_compute_residual(const FLAC__int32 data[], unsigned data_len, unsigned order, FLAC__int32 residual[]); | ||
81 | |||
82 | /* | ||
83 | * FLAC__fixed_restore_signal() | ||
84 | * -------------------------------------------------------------------- | ||
85 | * Restore the original signal by summing the residual and the | ||
86 | * predictor. | ||
87 | * | ||
88 | * IN residual[0,data_len-1] residual signal | ||
89 | * IN data_len length of original signal | ||
90 | * IN order <= FLAC__MAX_FIXED_ORDER fixed-predictor order | ||
91 | * *** IMPORTANT: the caller must pass in the historical samples: | ||
92 | * IN data[-order,-1] previously-reconstructed historical samples | ||
93 | * OUT data[0,data_len-1] original signal | ||
94 | */ | ||
95 | void FLAC__fixed_restore_signal(const FLAC__int32 residual[], unsigned data_len, unsigned order, FLAC__int32 data[]); | ||
96 | |||
97 | #endif | ||