Line | Branch | Exec | Source |
---|---|---|---|
1 | /* | ||
2 | * This file is part of FFmpeg. | ||
3 | * | ||
4 | * FFmpeg is free software; you can redistribute it and/or | ||
5 | * modify it under the terms of the GNU Lesser General Public | ||
6 | * License as published by the Free Software Foundation; either | ||
7 | * version 2.1 of the License, or (at your option) any later version. | ||
8 | * | ||
9 | * FFmpeg is distributed in the hope that it will be useful, | ||
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | * Lesser General Public License for more details. | ||
13 | * | ||
14 | * You should have received a copy of the GNU Lesser General Public | ||
15 | * License along with FFmpeg; if not, write to the Free Software | ||
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
17 | */ | ||
18 | |||
19 | #include "config.h" | ||
20 | #include "libavutil/attributes.h" | ||
21 | #include "opusdsp.h" | ||
22 | |||
23 | 10135 | static void postfilter_c(float *data, int period, float *gains, int len) | |
24 | { | ||
25 | 10135 | const float g0 = gains[0]; | |
26 | 10135 | const float g1 = gains[1]; | |
27 | 10135 | const float g2 = gains[2]; | |
28 | |||
29 | 10135 | float x4 = data[-period - 2]; | |
30 | 10135 | float x3 = data[-period - 1]; | |
31 | 10135 | float x2 = data[-period + 0]; | |
32 | 10135 | float x1 = data[-period + 1]; | |
33 | |||
34 |
2/2✓ Branch 0 taken 5737440 times.
✓ Branch 1 taken 10135 times.
|
5747575 | for (int i = 0; i < len; i++) { |
35 | 5737440 | float x0 = data[i - period + 2]; | |
36 | 5737440 | data[i] += g0 * x2 + | |
37 | 5737440 | g1 * (x1 + x3) + | |
38 | 5737440 | g2 * (x0 + x4); | |
39 | 5737440 | x4 = x3; | |
40 | 5737440 | x3 = x2; | |
41 | 5737440 | x2 = x1; | |
42 | 5737440 | x1 = x0; | |
43 | } | ||
44 | 10135 | } | |
45 | |||
46 | 56815 | static float deemphasis_c(float *y, float *x, float coeff, int len) | |
47 | { | ||
48 |
2/2✓ Branch 0 taken 22962960 times.
✓ Branch 1 taken 56815 times.
|
23019775 | for (int i = 0; i < len; i++) |
49 | 22962960 | coeff = y[i] = x[i] + coeff*CELT_EMPH_COEFF; | |
50 | |||
51 | 56815 | return coeff; | |
52 | } | ||
53 | |||
54 | 71 | av_cold void ff_opus_dsp_init(OpusDSP *ctx) | |
55 | { | ||
56 | 71 | ctx->postfilter = postfilter_c; | |
57 | 71 | ctx->deemphasis = deemphasis_c; | |
58 | |||
59 | #if ARCH_AARCH64 | ||
60 | ff_opus_dsp_init_aarch64(ctx); | ||
61 | #elif ARCH_RISCV | ||
62 | ff_opus_dsp_init_riscv(ctx); | ||
63 | #elif ARCH_X86 | ||
64 | 71 | ff_opus_dsp_init_x86(ctx); | |
65 | #endif | ||
66 | 71 | } | |
67 |