1 /*
2 * Copyright (c) 2007-2008 Ian Caulfield
3 * 2009 Ramiro Polla
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
26
28 int firorder, int iirorder,
30 int blocksize,
int32_t *sample_buffer)
31 {
37
38 for (
i = 0;
i < blocksize;
i++) {
39 int32_t residual = *sample_buffer;
40 unsigned int order;
41 int64_t accum = 0;
43
44 for (order = 0; order < firorder; order++)
45 accum += (int64_t) firbuf[order] * fircoeff[order];
46 for (order = 0; order < iirorder; order++)
47 accum += (int64_t) iirbuf[order] * iircoeff[order];
48
49 accum = accum >> filter_shift;
51
53 *--iirbuf =
result - accum;
54
57 }
58 }
59
62 const uint8_t *bypassed_lsbs,
63 const int8_t *noise_buffer,
65 unsigned int dest_ch,
66 uint16_t blockpos,
67 unsigned int maxchan,
68 int matrix_noise_shift,
69 int access_unit_size_pow2,
71 {
72 unsigned int src_ch,
i;
73 int index2 = 2 *
index + 1;
74 for (
i = 0;
i < blockpos;
i++) {
75 int64_t accum = 0;
76
77 for (src_ch = 0; src_ch <= maxchan; src_ch++)
78 accum += (int64_t)
samples[src_ch] * coeffs[src_ch];
79
80 if (matrix_noise_shift) {
81 index &= access_unit_size_pow2 - 1;
82 accum += noise_buffer[
index] * (1 << (matrix_noise_shift + 7));
84 }
85
86 samples[dest_ch] = ((accum >> 14) &
mask) + *bypassed_lsbs;
89 }
90 }
91
93 int8_t *output_shift,
94 uint8_t max_matrix_channel,
95 int is32))(
int32_t, uint16_t,
int32_t (*)[],
void *, uint8_t*, int8_t *, uint8_t,
int)
96 {
98 }
99
101 uint16_t blockpos,
104 uint8_t *ch_assign,
105 int8_t *output_shift,
106 uint8_t max_matrix_channel,
107 int is32)
108 {
109 unsigned int i, out_ch = 0;
111 int16_t *data_16 =
data;
112
113 for (
i = 0;
i < blockpos;
i++) {
114 for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) {
115 int mat_ch = ch_assign[out_ch];
117 (1
U << output_shift[mat_ch]);
118 lossless_check_data ^= (
sample & 0xffffff) << mat_ch;
119 if (is32)
121 else
123 }
124 }
125 return lossless_check_data;
126 }
127
129 {
134 if (ARCH_ARM)
136 if (ARCH_X86)
138 }