2 * Copyright (c) 2012 Mans Rullgard <mans@mansr.com>
4 * This file is part of Libav.
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * Libav is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 # define FUNC(n) n ## _32
28 # define sample int32_t
30 # define FUNC(n) n ## _16
31 # define sample int16_t
34 static void FUNC(flac_decorrelate_indep_c
)(uint8_t **out
, int32_t **in
,
35 int channels
, int len
, int shift
)
37 sample
*samples
= (sample
*) out
[0];
40 for (j
= 0; j
< len
; j
++)
41 for (i
= 0; i
< channels
; i
++)
42 *samples
++ = in
[i
][j
] << shift
;
45 static void FUNC(flac_decorrelate_ls_c
)(uint8_t **out
, int32_t **in
,
46 int channels
, int len
, int shift
)
48 sample
*samples
= (sample
*) out
[0];
51 for (i
= 0; i
< len
; i
++) {
54 *samples
++ = a
<< shift
;
55 *samples
++ = (a
- b
) << shift
;
59 static void FUNC(flac_decorrelate_rs_c
)(uint8_t **out
, int32_t **in
,
60 int channels
, int len
, int shift
)
62 sample
*samples
= (sample
*) out
[0];
65 for (i
= 0; i
< len
; i
++) {
68 *samples
++ = (a
+ b
) << shift
;
69 *samples
++ = b
<< shift
;
73 static void FUNC(flac_decorrelate_ms_c
)(uint8_t **out
, int32_t **in
,
74 int channels
, int len
, int shift
)
76 sample
*samples
= (sample
*) out
[0];
79 for (i
= 0; i
< len
; i
++) {
83 *samples
++ = (a
+ b
) << shift
;
84 *samples
++ = a
<< shift
;