1 /*
2 * Copyright (C) 2011-2012 Michael Niedermayer (michaelni@gmx.at)
3 *
4 * This file is part of libswresample
5 *
6 * libswresample 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.
10 *
11 * libswresample 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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with libswresample; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #if defined(TEMPLATE_REMATRIX_FLT)
22 # define R(x) x
23 # define SAMPLE float
24 # define COEFF float
25 # define INTER float
26 # define RENAME(x) x ## _float
27 #elif defined(TEMPLATE_REMATRIX_DBL)
28 # define R(x) x
29 # define SAMPLE double
30 # define COEFF double
31 # define INTER double
32 # define RENAME(x) x ## _double
33 #elif defined(TEMPLATE_REMATRIX_S16)
34 # define R(x) (((x) + 16384)>>15)
35 # define SAMPLE int16_t
36 # define COEFF int
37 # define INTER int
38 # define RENAME(x) x ## _s16
39 #endif
40
42
44 int i;
45 COEFF coeff1 = coeffp[index1];
46 COEFF coeff2 = coeffp[index2];
47
49 out[i] =
R(coeff1*in1[i] + coeff2*in2[i]);
50 }
51
53 int i;
56 out[i] =
R(coeff*in[i]);
57 }
58
59 static void RENAME(mix6to2)(SAMPLE **out,
const SAMPLE **in, COEFF *coeffp,
integer len){
60 int i;
61
62 for(i=0; i<
len; i++) {
63 INTER
t = in[2][i]*coeffp[0*6+2] + in[3][i]*coeffp[0*6+3];
64 out[0][i] =
R(t + in[0][i]*coeffp[0*6+0] + in[4][i]*coeffp[0*6+4]);
65 out[1][i] =
R(t + in[1][i]*coeffp[1*6+1] + in[5][i]*coeffp[1*6+5]);
66 }
67 }
68
69 static void RENAME(mix8to2)(SAMPLE **out,
const SAMPLE **in, COEFF *coeffp,
integer len){
70 int i;
71
72 for(i=0; i<
len; i++) {
73 INTER
t = in[2][i]*coeffp[0*8+2] + in[3][i]*coeffp[0*8+3];
74 out[0][i] =
R(t + in[0][i]*coeffp[0*8+0] + in[4][i]*coeffp[0*8+4] + in[6][i]*coeffp[0*8+6]);
75 out[1][i] =
R(t + in[1][i]*coeffp[1*8+1] + in[5][i]*coeffp[1*8+5] + in[7][i]*coeffp[1*8+7]);
76 }
77 }
78
81 && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
82 && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
83 )
85
87 && s->matrix[0][2] == s->matrix[1][2] && s->matrix[0][3] == s->matrix[1][3]
88 && !s->matrix[0][1] && !s->matrix[0][5] && !s->matrix[1][0] && !s->matrix[1][4]
89 && !s->matrix[0][7] && !s->matrix[1][6]
90 )
92
94 }
95
96 #undef R
97 #undef SAMPLE
98 #undef COEFF
99 #undef INTER
100 #undef RENAME