FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/g722dsp.c
Date: 2021-09-16 08:47:15
Exec Total Coverage
Lines: 30 30 100.0%
Branches: 0 0 -%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2015 Peter Meerwald <pmeerw@pmeerw.net>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "g722dsp.h"
22 #include "mathops.h"
23
24 /*
25 * quadrature mirror filter (QMF) coefficients (ITU-T G.722 Table 11) inlined
26 * in code below: 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11
27 */
28
29 274446 static void g722_apply_qmf(const int16_t *prev_samples, int xout[2])
30 {
31 274446 xout[1] = MUL16(*prev_samples++, 3);
32 274446 xout[0] = MUL16(*prev_samples++, -11);
33
34 274446 MAC16(xout[1], *prev_samples++, -11);
35 274446 MAC16(xout[0], *prev_samples++, 53);
36
37 274446 MAC16(xout[1], *prev_samples++, 12);
38 274446 MAC16(xout[0], *prev_samples++, -156);
39
40 274446 MAC16(xout[1], *prev_samples++, 32);
41 274446 MAC16(xout[0], *prev_samples++, 362);
42
43 274446 MAC16(xout[1], *prev_samples++, -210);
44 274446 MAC16(xout[0], *prev_samples++, -805);
45
46 274446 MAC16(xout[1], *prev_samples++, 951);
47 274446 MAC16(xout[0], *prev_samples++, 3876);
48
49 274446 MAC16(xout[1], *prev_samples++, 3876);
50 274446 MAC16(xout[0], *prev_samples++, 951);
51
52 274446 MAC16(xout[1], *prev_samples++, -805);
53 274446 MAC16(xout[0], *prev_samples++, -210);
54
55 274446 MAC16(xout[1], *prev_samples++, 362);
56 274446 MAC16(xout[0], *prev_samples++, 32);
57
58 274446 MAC16(xout[1], *prev_samples++, -156);
59 274446 MAC16(xout[0], *prev_samples++, 12);
60
61 274446 MAC16(xout[1], *prev_samples++, 53);
62 274446 MAC16(xout[0], *prev_samples++, -11);
63
64 274446 MAC16(xout[1], *prev_samples++, -11);
65 274446 MAC16(xout[0], *prev_samples++, 3);
66 274446 }
67
68 18 av_cold void ff_g722dsp_init(G722DSPContext *c)
69 {
70 18 c->apply_qmf = g722_apply_qmf;
71
72 if (ARCH_ARM)
73 ff_g722dsp_init_arm(c);
74 if (ARCH_X86)
75 18 ff_g722dsp_init_x86(c);
76 18 }
77