FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/opusdsp.c
Date: 2021-09-22 05:58:22
Exec Total Coverage
Lines: 27 27 100.0%
Branches: 4 4 100.0%

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 "opusdsp.h"
20
21 10135 static void postfilter_c(float *data, int period, float *gains, int len)
22 {
23 10135 const float g0 = gains[0];
24 10135 const float g1 = gains[1];
25 10135 const float g2 = gains[2];
26
27 10135 float x4 = data[-period - 2];
28 10135 float x3 = data[-period - 1];
29 10135 float x2 = data[-period + 0];
30 10135 float x1 = data[-period + 1];
31
32
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5747575 for (int i = 0; i < len; i++) {
33 5737440 float x0 = data[i - period + 2];
34 5737440 data[i] += g0 * x2 +
35 5737440 g1 * (x1 + x3) +
36 5737440 g2 * (x0 + x4);
37 5737440 x4 = x3;
38 5737440 x3 = x2;
39 5737440 x2 = x1;
40 5737440 x1 = x0;
41 }
42 10135 }
43
44 56707 static float deemphasis_c(float *y, float *x, float coeff, int len)
45 {
46
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22915987 for (int i = 0; i < len; i++)
47 22859280 coeff = y[i] = x[i] + coeff*CELT_EMPH_COEFF;
48
49 56707 return coeff;
50 }
51
52 60 av_cold void ff_opus_dsp_init(OpusDSP *ctx)
53 {
54 60 ctx->postfilter = postfilter_c;
55 60 ctx->deemphasis = deemphasis_c;
56
57 if (ARCH_X86)
58 60 ff_opus_dsp_init_x86(ctx);
59
60 if (ARCH_AARCH64)
61 ff_opus_dsp_init_aarch64(ctx);
62 60 }
63